/* roulang page: index */
:root {
            --primary: #c0392b;
            --primary-dark: #962d22;
            --primary-light: #e74c3c;
            --primary-soft: #fdedec;
            --accent: #f39c12;
            --accent-dark: #d68910;
            --accent-light: #fdebd0;
            --bg: #fafaf8;
            --bg-white: #ffffff;
            --bg-dark: #1a1a1a;
            --bg-darker: #111111;
            --bg-card: #ffffff;
            --bg-alt: #f5f3ef;
            --text: #1e1e1e;
            --text-strong: #0d0d0d;
            --text-weak: #5c5c5c;
            --text-muted: #888888;
            --text-light: #aaaaaa;
            --text-inverse: #ffffff;
            --border: #e0dcd5;
            --border-light: #ece8e2;
            --border-strong: #c9c4bb;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 50%;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --nav-height: 68px;
            --container-max: 1240px;
            --container-narrow: 960px;
            --section-gap: 64px;
            --section-gap-lg: 88px;
            --card-pad: 28px;
            --card-pad-sm: 20px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-strong);
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
        }
        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-links a.active {
            font-weight: 600;
        }
        .nav-mega-trigger {
            position: relative;
        }
        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .nav-mega-trigger>a .fa-chevron-down {
            font-size: 0.65rem;
            transition: transform var(--transition-fast);
        }
        .nav-mega-trigger:hover>a .fa-chevron-down {
            transform: rotate(180deg);
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--border-light);
            padding: 24px;
            min-width: 520px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition-base);
            z-index: 999;
        }
        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(4px);
        }
        .mega-card {
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            padding: 16px;
            text-align: center;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1px solid transparent;
        }
        .mega-card:hover {
            background: var(--bg-white);
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .mega-card .mega-icon {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .mega-card .mega-title {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-strong);
        }
        .mega-card .mega-sub {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-nav {
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-nav-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-nav-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .btn-nav-solid {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }
        .btn-nav-solid:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1100;
            background: none;
            border: none;
        }
        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-strong);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .mobile-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: var(--bg-white);
            box-shadow: var(--shadow-xl);
            z-index: 1050;
            padding: 80px 24px 40px;
            transition: right var(--transition-slow);
            overflow-y: auto;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-nav.open {
            right: 0;
        }
        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 1rem;
            color: var(--text);
            transition: all var(--transition-fast);
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1040;
            transition: opacity var(--transition-base);
        }
        .mobile-overlay.show {
            display: block;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 620px;
            display: flex;
            align-items: center;
            padding: 60px 0;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.82) 0%, rgba(26, 26, 26, 0.55) 50%, rgba(26, 26, 26, 0.75) 100%);
            z-index: 1;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-content {
            flex: 1 1 480px;
            color: #fff;
        }
        .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .hero-content h1 span {
            color: var(--accent);
        }
        .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 540px;
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition-base);
            box-shadow: 0 6px 24px rgba(192, 57, 43, 0.4);
            border: none;
            cursor: pointer;
        }
        .btn-hero-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(192, 57, 43, 0.5);
            color: #fff;
        }
        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.6);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }
        .hero-card {
            flex: 0 0 380px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-xl);
            color: var(--text);
        }
        .hero-card .card-tag {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 4px 12px;
            border-radius: 14px;
            margin-bottom: 14px;
        }
        .hero-card h3 {
            font-size: 1.4rem;
            margin-bottom: 8px;
            color: var(--text-strong);
        }
        .hero-card .card-features {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin: 16px 0;
        }
        .hero-card .card-features li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-weak);
        }
        .hero-card .card-features li i {
            color: var(--primary);
            font-size: 0.85rem;
        }
        .hero-card .btn-card-action {
            width: 100%;
            padding: 13px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            text-align: center;
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
            margin-top: 6px;
        }
        .hero-card .btn-card-action:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
            color: #fff;
        }

        /* Section Common */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-lg {
            padding: var(--section-gap-lg) 0;
        }
        .section-label {
            display: inline-block;
            font-weight: 700;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-strong);
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-weak);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* Festival Campaign */
        .festival-section {
            background: linear-gradient(135deg, #1a0a00 0%, #3d1200 30%, #6b1d00 60%, #3d1200 100%);
            color: #fff;
            padding: 48px 0;
            position: relative;
            overflow: hidden;
        }
        .festival-section::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(243, 156, 18, 0.15);
            pointer-events: none;
        }
        .festival-inner {
            display: flex;
            align-items: center;
            gap: 30px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .festival-badge-large {
            flex: 0 0 auto;
            background: var(--accent);
            color: #1a1a1a;
            font-weight: 900;
            font-size: 1.1rem;
            padding: 14px 22px;
            border-radius: var(--radius-lg);
            text-align: center;
            letter-spacing: 0.04em;
            box-shadow: 0 0 40px rgba(243, 156, 18, 0.5);
        }
        .festival-info {
            flex: 1 1 300px;
        }
        .festival-info h2 {
            color: #fff;
            font-size: 1.8rem;
            margin-bottom: 6px;
        }
        .festival-info p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
            line-height: 1.6;
        }
        .festival-cta {
            flex: 0 0 auto;
        }
        .btn-festival {
            display: inline-block;
            background: var(--accent);
            color: #1a1a1a;
            font-weight: 700;
            padding: 14px 30px;
            border-radius: var(--radius-md);
            font-size: 1.05rem;
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
            box-shadow: 0 6px 22px rgba(243, 156, 18, 0.45);
        }
        .btn-festival:hover {
            background: #f7b840;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(243, 156, 18, 0.55);
            color: #1a1a1a;
        }

        /* App Download */
        .app-section {
            background: var(--bg-alt);
        }
        .app-inner {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .app-visual {
            flex: 0 0 280px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: center;
            box-shadow: var(--shadow-md);
        }
        .app-visual img {
            border-radius: var(--radius-sm);
            margin: 0 auto;
        }
        .app-visual .qr-placeholder {
            width: 160px;
            height: 160px;
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--text-muted);
        }
        .app-content {
            flex: 1 1 350px;
        }
        .app-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        .app-badge-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--text-strong);
            color: #fff;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            border: none;
        }
        .app-badge-btn:hover {
            background: #000;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            color: #fff;
        }

        /* Services */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 20px;
        }
        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--card-pad);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .service-card .svc-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .service-card h4 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* Hot List */
        .hotlist-wrap {
            display: flex;
            flex-direction: column;
            gap: 10px;
            counter-reset: hotlist;
        }
        .hotlist-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
            counter-increment: hotlist;
        }
        .hotlist-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
            border-color: var(--primary);
        }
        .hotlist-rank {
            flex: 0 0 40px;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-strong);
        }
        .hotlist-item:nth-child(1) .hotlist-rank {
            background: #ffd700;
            color: #1a1a1a;
        }
        .hotlist-item:nth-child(2) .hotlist-rank {
            background: #c0c0c0;
            color: #1a1a1a;
        }
        .hotlist-item:nth-child(3) .hotlist-rank {
            background: #cd7f32;
            color: #fff;
        }
        .hotlist-info {
            flex: 1;
            min-width: 0;
        }
        .hotlist-info h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }
        .hotlist-info .hot-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .hotlist-badge {
            flex: 0 0 auto;
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 0.82rem;
            white-space: nowrap;
        }
        .hotlist-item:nth-child(1) .hotlist-badge {
            background: #fff3cd;
            color: #b8860b;
        }

        /* Data Metrics */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .metric-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-top: 8px;
        }

        /* About */
        .about-section {
            background: var(--bg-white);
        }
        .about-inner {
            display: flex;
            gap: 40px;
            align-items: flex-start;
            flex-wrap: wrap;
        }
        .about-text {
            flex: 1 1 400px;
        }
        .about-text p {
            font-size: 1rem;
            color: var(--text-weak);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .about-visual {
            flex: 0 0 340px;
        }
        .about-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
        }

        /* Steps */
        .steps-list {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            counter-reset: step;
        }
        .step-item {
            flex: 1 1 200px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            border: 1px solid var(--border-light);
            position: relative;
            counter-increment: step;
            transition: all var(--transition-base);
        }
        .step-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .step-num {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-full);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            margin: 0 auto 16px;
        }
        .step-item h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* Changelog */
        .changelog-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 700px;
        }
        .changelog-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            border-left: 4px solid var(--primary);
            border: 1px solid var(--border-light);
            border-left: 4px solid var(--primary);
            transition: all var(--transition-fast);
        }
        .changelog-item:hover {
            box-shadow: var(--shadow-md);
        }
        .changelog-item .cl-version {
            font-weight: 700;
            color: var(--primary);
            font-size: 0.9rem;
            margin-bottom: 4px;
        }
        .changelog-item .cl-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            float: right;
        }
        .changelog-item p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
            margin-top: 4px;
        }

        /* News */
        .news-layout {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }
        .news-list-col {
            flex: 1 1 500px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .news-item .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 4px;
        }
        .news-item h4 {
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .news-item .news-summary {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.5;
        }
        .news-item .btn-read-more {
            display: inline-block;
            margin-top: 8px;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--primary);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .news-item .btn-read-more:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        .news-sidebar {
            flex: 0 0 280px;
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        .news-sidebar h4 {
            margin-bottom: 14px;
            font-size: 1.05rem;
        }
        .news-sidebar ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.9rem;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .news-sidebar ul li:hover {
            color: var(--primary);
        }
        .news-sidebar ul li:last-child {
            border-bottom: none;
        }

        /* Testimonials */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }
        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition-base);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .testimonial-card .quote-icon {
            font-size: 2rem;
            color: var(--primary-soft);
            position: absolute;
            top: 16px;
            right: 20px;
        }
        .testimonial-card .t-text {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 14px;
            font-style: italic;
        }
        .testimonial-card .t-author {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-strong);
        }
        .testimonial-card .t-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Security */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 20px;
        }
        .security-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .security-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .security-card .sec-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .security-card h4 {
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .security-card p {
            font-size: 0.85rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-q {
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-strong);
            background: var(--bg-white);
            transition: background var(--transition-fast);
        }
        .faq-q:hover {
            background: var(--bg-alt);
        }
        .faq-q .faq-icon {
            transition: transform var(--transition-fast);
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .faq-item.open .faq-q .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            font-size: 0.92rem;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* CTA */
        .cta-section {
            background: var(--bg-dark);
            color: #fff;
            text-align: center;
            padding: 60px 0;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 10px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-large {
            display: inline-block;
            background: var(--accent);
            color: #1a1a1a;
            font-weight: 700;
            padding: 16px 36px;
            border-radius: var(--radius-md);
            font-size: 1.1rem;
            cursor: pointer;
            border: none;
            transition: all var(--transition-base);
            box-shadow: 0 6px 22px rgba(243, 156, 18, 0.4);
        }
        .btn-cta-large:hover {
            background: #f7b840;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(243, 156, 18, 0.5);
            color: #1a1a1a;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 14px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-links-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                flex-direction: column;
                text-align: center;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-desc {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-cta-group {
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .hero-card {
                flex: 0 0 auto;
                width: 100%;
                max-width: 420px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }
            .mega-panel {
                min-width: 400px;
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .header-actions .btn-nav {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .mobile-nav {
                display: flex;
            }
            .hero-section {
                min-height: auto;
                padding: 40px 0;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat .stat-num {
                font-size: 1.5rem;
            }
            .hero-card {
                padding: 22px;
            }
            .section {
                padding: 40px 0;
            }
            .section-lg {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .services-grid {
                grid-template-columns: 1fr 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .security-grid {
                grid-template-columns: 1fr 1fr;
            }
            .news-layout {
                flex-direction: column;
            }
            .news-sidebar {
                flex: 0 0 auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .festival-inner {
                flex-direction: column;
                text-align: center;
            }
            .app-inner {
                flex-direction: column;
                text-align: center;
            }
            .app-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 280px;
            }
            .about-inner {
                flex-direction: column;
            }
            .about-visual {
                flex: 0 0 auto;
                width: 100%;
            }
            .mega-panel {
                display: none !important;
            }
            .nav-mega-trigger:hover .mega-panel {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 1.4rem;
            }
            .hero-desc {
                font-size: 0.88rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: center;
            }
            .hero-stats {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }
            .hero-card {
                max-width: 100%;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .security-grid {
                grid-template-columns: 1fr;
            }
            .steps-list {
                flex-direction: column;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 0.95rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .footer-links-row {
                justify-content: center;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #c0392b;
            --primary-dark: #962d22;
            --primary-light: #e74c3c;
            --primary-soft: #fdedec;
            --accent: #f39c12;
            --accent-dark: #d68910;
            --accent-light: #fdebd0;
            --bg: #fafaf8;
            --bg-white: #ffffff;
            --bg-dark: #1a1a1a;
            --bg-darker: #111111;
            --bg-card: #ffffff;
            --bg-alt: #f5f3ef;
            --text: #1e1e1e;
            --text-strong: #0d0d0d;
            --text-weak: #5c5c5c;
            --text-muted: #888888;
            --text-light: #aaaaaa;
            --text-inverse: #ffffff;
            --border: #e0dcd5;
            --border-light: #ece8e2;
            --border-strong: #c9c4bb;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 50%;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --nav-height: 68px;
            --container-max: 1240px;
            --container-narrow: 960px;
            --section-gap: 64px;
            --section-gap-lg: 88px;
            --card-pad: 28px;
            --card-pad-sm: 20px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
        }

        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

        .nav-mega-trigger {
            position: relative;
        }

        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
        }

        .nav-mega-trigger>a i {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
        }

        .nav-mega-trigger:hover>a i {
            transform: rotate(180deg);
        }

        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 16px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            min-width: 520px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition-base);
            border: 1px solid var(--border-light);
            z-index: 999;
        }

        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(4px);
        }

        .mega-card {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            background: transparent;
            text-decoration: none;
            color: inherit;
            cursor: pointer;
        }

        .mega-card:hover {
            background: var(--bg-alt);
            color: inherit;
        }

        .mega-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .mega-title {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-strong);
            margin-bottom: 2px;
        }

        .mega-sub {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.3;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn-nav {
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
        }

        .btn-nav-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }

        .btn-nav-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn-nav-solid {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }

        .btn-nav-solid:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            cursor: pointer;
            background: none;
            border: none;
            z-index: 1001;
        }

        .mobile-toggle span {
            width: 26px;
            height: 2.5px;
            background: var(--text-strong);
            border-radius: 2px;
            transition: all var(--transition-fast);
            display: block;
        }

        .mobile-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background: linear-gradient(170deg, #1a1410 0%, #2c1f16 40%, #1a1a1a 100%);
            color: var(--text-inverse);
            padding: 70px 0 80px;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, rgba(26, 20, 16, 0.9), transparent);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            color: #fff;
        }

        .hero-text h1 span {
            color: var(--accent);
            position: relative;
        }

        .hero-text .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            line-height: 1.6;
            max-width: 480px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-xl);
            padding: 10px 18px;
            font-size: 0.9rem;
            font-weight: 500;
            color: #fff;
            backdrop-filter: blur(6px);
        }

        .hero-badge i {
            color: var(--accent);
            font-size: 1rem;
        }

        .hero-qualification {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 28px;
            padding: 14px 20px;
            background: rgba(243, 156, 18, 0.12);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent);
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 440px;
        }

        .hero-qualification i {
            color: var(--accent);
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1a1410;
            padding: 15px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
            text-decoration: none;
            box-shadow: 0 6px 24px rgba(243, 156, 18, 0.35);
        }

        .btn-hero-primary:hover {
            background: #f5a623;
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(243, 156, 18, 0.5);
            color: #1a1410;
        }

        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 15px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition-base);
            cursor: pointer;
            border: 2px solid rgba(255, 255, 255, 0.4);
            text-decoration: none;
        }

        .btn-hero-secondary:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero-visual-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(10px);
            text-align: center;
            max-width: 380px;
            width: 100%;
        }

        .hero-visual-card .step-indicator {
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 8px;
        }

        .hero-visual-card .big-number {
            font-size: 4rem;
            font-weight: 900;
            color: #fff;
            line-height: 1;
            margin-bottom: 8px;
        }

        .hero-visual-card .big-number-label {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }

        .hero-visual-card .mini-stats {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-visual-card .mini-stat {
            text-align: center;
        }

        .hero-visual-card .mini-stat-value {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent);
        }

        .hero-visual-card .mini-stat-label {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.55);
        }

        /* Section Common */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-lg {
            padding: var(--section-gap-lg) 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-dark .section-header h2 {
            color: #fff;
        }

        .section-header .section-tag {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: var(--radius-xl);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .section-dark .section-header .section-tag {
            background: rgba(255, 255, 255, 0.12);
            color: var(--accent);
        }

        .section-header p {
            color: var(--text-weak);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.6);
        }

        /* Pain Points Grid */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .pain-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--card-pad);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .pain-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }

        .pain-card .pain-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-full);
            background: #fef2f2;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: #e74c3c;
        }

        .pain-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 8px;
        }

        .pain-card p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.5;
        }

        /* Solution Block */
        .solution-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .solution-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .solution-image-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .solution-text h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-strong);
        }

        .solution-text p {
            color: var(--text-weak);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .solution-list {
            list-style: none;
            padding: 0;
        }

        .solution-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.95rem;
            color: var(--text);
        }

        .solution-list li i {
            color: #27ae60;
            font-size: 1.1rem;
            margin-top: 2px;
            flex-shrink: 0;
        }

        /* Steps Flow */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .steps-flow::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 3px;
            background: linear-gradient(to right, var(--primary-light), var(--accent), var(--primary-light));
            border-radius: 2px;
            z-index: 0;
        }

        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .step-circle {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-full);
            background: var(--bg-card);
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            position: relative;
        }

        .step-item:hover .step-circle {
            background: var(--primary);
            color: #fff;
            transform: scale(1.08);
            box-shadow: var(--shadow-lg);
        }

        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 0.85rem;
            color: var(--text-weak);
            line-height: 1.5;
        }

        /* Results / Stats */
        .results-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .result-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .result-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .result-card .result-value {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
        }

        .result-card .result-label {
            font-size: 0.95rem;
            color: var(--text-weak);
            font-weight: 500;
        }

        .result-card .result-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--card-pad);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .testimonial-card .testimonial-stars {
            color: var(--accent);
            font-size: 0.9rem;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .testimonial-card .testimonial-text {
            font-size: 0.95rem;
            color: var(--text);
            line-height: 1.6;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            font-size: 0.9rem;
        }

        .testimonial-author-info {
            font-size: 0.85rem;
            color: var(--text-weak);
        }

        .testimonial-author-info strong {
            display: block;
            color: var(--text-strong);
            font-size: 0.9rem;
        }

        /* Game Guide Cards */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .guide-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .guide-card-image {
            aspect-ratio: 16/10;
            overflow: hidden;
        }

        .guide-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .guide-card:hover .guide-card-image img {
            transform: scale(1.06);
        }

        .guide-card-body {
            padding: 20px;
        }

        .guide-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 8px;
        }

        .guide-card-body p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.5;
            margin-bottom: 14px;
        }

        .guide-card-body .guide-tag {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: var(--radius-xl);
            font-size: 0.78rem;
            font-weight: 600;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--border-strong);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-strong);
            user-select: none;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: var(--bg-alt);
        }

        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 24px;
            font-size: 0.93rem;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(160deg, #1a1410 0%, #2c1f16 50%, #1a1a1a 100%);
            color: #fff;
            text-align: center;
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }

        .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 14px;
            color: #fff;
        }

        .cta-content p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 550px;
            margin: 0 auto 32px;
            line-height: 1.6;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1a1410;
            padding: 16px 36px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.1rem;
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
            text-decoration: none;
            box-shadow: 0 8px 28px rgba(243, 156, 18, 0.4);
            letter-spacing: 0.01em;
        }

        .btn-cta:hover {
            background: #f5a623;
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(243, 156, 18, 0.55);
            color: #1a1410;
        }

        /* Brand Intro */
        .brand-intro-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
        }

        .brand-intro-card h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 16px;
        }

        .brand-intro-card p {
            font-size: 1rem;
            color: var(--text-weak);
            line-height: 1.8;
            max-width: 700px;
            margin: 0 auto;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 28px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }

        .footer-links-row {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .footer-links-row a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.8rem;
        }

        .footer-links-row a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .hero-visual {
                order: -1;
            }

            .hero-text h1 {
                font-size: 2.2rem;
            }

            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .solution-block {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .steps-flow {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }

            .steps-flow::before {
                display: none;
            }

            .results-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .nav-links {
                gap: 2px;
            }

            .nav-links a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }

            .header-actions .btn-nav {
                padding: 7px 14px;
                font-size: 0.82rem;
            }

            .mega-panel {
                min-width: 380px;
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .header-actions {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .nav-links.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                padding: 16px 20px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border-light);
                gap: 4px;
                z-index: 999;
            }

            .nav-links.mobile-open a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
                font-size: 1rem;
            }

            .mega-panel {
                position: static;
                transform: none;
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
                min-width: auto;
                grid-template-columns: 1fr;
                box-shadow: none;
                border: none;
                padding: 4px 0 4px 16px;
                display: none;
            }

            .nav-mega-trigger.open .mega-panel {
                display: grid;
            }

            .hero-text h1 {
                font-size: 1.8rem;
            }

            .pain-grid {
                grid-template-columns: 1fr;
            }

            .steps-flow {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .results-grid {
                grid-template-columns: 1fr 1fr;
            }

            .testimonial-grid {
                grid-template-columns: 1fr;
            }

            .guide-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .hero-badges {
                gap: 8px;
            }

            .hero-badge {
                padding: 8px 14px;
                font-size: 0.8rem;
            }

            .hero-actions {
                flex-direction: column;
            }

            .btn-hero-primary,
            .btn-hero-secondary {
                justify-content: center;
                width: 100%;
            }

            .section {
                padding: 40px 0;
            }

            .section-lg {
                padding: 50px 0;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

            .container {
                padding: 0 16px;
            }

            .header-inner {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.5rem;
            }

            .hero-visual-card .big-number {
                font-size: 2.8rem;
            }

            .results-grid {
                grid-template-columns: 1fr;
            }

            .hero-qualification {
                font-size: 0.85rem;
                padding: 10px 14px;
            }

            .cta-content h2 {
                font-size: 1.6rem;
            }

            .brand-intro-card {
                padding: 24px 16px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 10px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #c0392b;
            --primary-dark: #962d22;
            --primary-light: #e74c3c;
            --primary-soft: #fdedec;
            --accent: #f39c12;
            --accent-dark: #d68910;
            --accent-light: #fdebd0;
            --bg: #fafaf8;
            --bg-white: #ffffff;
            --bg-dark: #1a1a1a;
            --bg-darker: #111111;
            --bg-card: #ffffff;
            --bg-alt: #f5f3ef;
            --text: #1e1e1e;
            --text-strong: #0d0d0d;
            --text-weak: #5c5c5c;
            --text-muted: #888888;
            --text-light: #aaaaaa;
            --text-inverse: #ffffff;
            --border: #e0dcd5;
            --border-light: #ece8e2;
            --border-strong: #c9c4bb;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 50%;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --nav-height: 68px;
            --container-max: 1240px;
            --container-narrow: 960px;
            --section-gap: 64px;
            --section-gap-lg: 88px;
            --card-pad: 28px;
            --card-pad-sm: 20px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            margin: 0;
            padding: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            line-height: 1.3;
            color: var(--text-strong);
        }
        p {
            margin: 0;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
        }
        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }
        .nav-mega-trigger {
            position: relative;
        }
        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-mega-trigger>a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-mega-trigger>a i {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
        }
        .nav-mega-trigger:hover>a i {
            transform: rotate(180deg);
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(6px);
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--border-light);
            padding: 16px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            min-width: 520px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition-base);
            z-index: 1001;
        }
        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(2px);
        }
        .mega-card {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            text-decoration: none;
            color: var(--text);
        }
        .mega-card:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }
        .mega-icon {
            width: 40px;
            height: 40px;
            background: var(--primary-soft);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
            flex-shrink: 0;
        }
        .mega-title {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-strong);
            margin-bottom: 2px;
        }
        .mega-sub {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-nav {
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-nav-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-nav-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .btn-nav-solid {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }
        .btn-nav-solid:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            flex-shrink: 0;
        }
        .mobile-toggle span {
            width: 26px;
            height: 3px;
            background: var(--text-strong);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(192, 57, 43, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 22px rgba(192, 57, 43, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(243, 156, 18, 0.3);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 22px rgba(243, 156, 18, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .btn-lg {
            padding: 15px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-md);
        }

        /* Section spacing */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-lg {
            padding: var(--section-gap-lg) 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.08rem;
            color: var(--text-weak);
            margin-bottom: 36px;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-title {
            margin-bottom: 10px;
        }
        .badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-primary {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        /* Hero Section */
        .hero-section {
            padding: 60px 0 70px;
            background: linear-gradient(180deg, #fefefe 0%, #fafaf6 100%);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(192, 57, 43, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1.4fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .hero-side {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .hero-value-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        .hero-value-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .hero-value-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .hero-value-icon.red {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .hero-value-icon.gold {
            background: var(--accent-light);
            color: var(--accent-dark);
        }
        .hero-value-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 3px;
            color: var(--text-strong);
        }
        .hero-value-info p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.4;
        }
        .hero-center {
            text-align: center;
            position: relative;
        }
        .hero-center h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-strong);
            margin-bottom: 10px;
            letter-spacing: -0.02em;
            line-height: 1.25;
        }
        .hero-center h1 span {
            color: var(--primary);
        }
        .hero-center .hero-desc {
            font-size: 1.05rem;
            color: var(--text-weak);
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .hero-screenshot {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            border: 2px solid var(--border-light);
            margin-bottom: 24px;
            background: var(--bg-dark);
        }
        .hero-screenshot img {
            width: 100%;
            height: auto;
            display: block;
        }
        .hero-screenshot-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, 0.25) 100%);
            pointer-events: none;
        }
        .hero-btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Pain Points Section */
        .pain-section {
            background: var(--bg-white);
            padding: 60px 0;
        }
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .pain-card {
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: center;
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }
        .pain-card:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-md);
        }
        .pain-card .pain-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-full);
            background: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .pain-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .pain-card p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* Solution Section */
        .solution-section {
            padding: 70px 0;
            background: var(--bg);
        }
        .solution-intro {
            max-width: 700px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .solution-intro p {
            font-size: 1.05rem;
            color: var(--text-weak);
            line-height: 1.8;
        }
        .game-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .game-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .game-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--border-strong);
        }
        .game-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
        }
        .game-card-body {
            padding: 18px 16px;
        }
        .game-card-body h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-strong);
        }
        .game-card-body p {
            font-size: 0.83rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .game-card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-soft);
            color: var(--primary);
        }

        /* Features Section */
        .features-section {
            padding: 70px 0;
            background: var(--bg-white);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .feature-item {
            display: flex;
            gap: 18px;
            padding: 24px;
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }
        .feature-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-md);
        }
        .feature-item .feature-icon-circle {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-full);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .feature-item .feature-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 5px;
        }
        .feature-item .feature-content p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* Stats Section */
        .stats-section {
            padding: 60px 0;
            background: var(--bg-dark);
            color: var(--text-inverse);
        }
        .stats-section .section-title {
            color: #fff;
        }
        .stats-section .section-subtitle {
            color: rgba(255, 255, 255, 0.6);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: -0.02em;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
        }

        /* Testimonials */
        .testimonials-section {
            padding: 70px 0;
            background: var(--bg);
        }
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }
        .testimonial-stars {
            color: var(--accent);
            margin-bottom: 12px;
            font-size: 0.9rem;
        }
        .testimonial-card blockquote {
            margin: 0 0 16px;
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
            font-style: italic;
            border-left: 3px solid var(--primary-soft);
            padding-left: 14px;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testimonial-avatar {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-full);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
        }
        .testimonial-author strong {
            font-size: 0.9rem;
            color: var(--text-strong);
        }
        .testimonial-author span {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* Steps Section */
        .steps-section {
            padding: 70px 0;
            background: var(--bg-white);
        }
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            position: relative;
            padding: 32px 20px;
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            transition: all var(--transition-base);
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-full);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 14px;
        }
        .step-item h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.84rem;
            color: var(--text-weak);
            line-height: 1.5;
        }

        /* FAQ */
        .faq-section {
            padding: 70px 0;
            background: var(--bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-strong);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-strong);
            transition: color var(--transition-fast);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition-base);
            color: var(--text-weak);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            padding: 0 24px 20px;
            max-height: 400px;
        }

        /* CTA Section */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: #fff;
            text-align: center;
        }
        .cta-section .section-title {
            color: #fff;
        }
        .cta-section .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }
        .cta-btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 28px;
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }
        .btn-white:hover {
            background: #f5f5f5;
            transform: translateY(-2px);
            color: var(--primary-dark);
        }
        .btn-ghost-white {
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            background: transparent;
        }
        .btn-ghost-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }

        /* Brand Intro */
        .brand-intro-section {
            padding: 60px 0;
            background: var(--bg-alt);
        }
        .brand-intro-card {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
            max-width: 900px;
            margin: 0 auto;
        }
        .brand-intro-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-strong);
        }
        .brand-intro-card p {
            font-size: 0.98rem;
            color: var(--text-weak);
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 24px;
            font-size: 0.9rem;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-links-row {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .footer-links-row a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-links-row a:hover {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-side {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 12px;
            }
            .hero-value-card {
                flex: 1 1 140px;
                min-width: 140px;
            }
            .game-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-links {
                display: none;
            }
            .header-actions {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-links.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-lg);
                padding: 16px 28px;
                gap: 4px;
                z-index: 999;
            }
            .nav-links.mobile-open a {
                padding: 12px 16px;
                width: 100%;
            }
            .mega-panel {
                position: static;
                transform: none;
                min-width: auto;
                grid-template-columns: 1fr;
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
                box-shadow: none;
                border: none;
                padding: 8px 0;
                display: none;
            }
            .nav-mega-trigger.open .mega-panel {
                display: grid;
            }
            .header-actions.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: calc(var(--nav-height) + 320px);
                left: 0;
                right: 0;
                background: var(--bg-white);
                padding: 16px 28px;
                gap: 10px;
                z-index: 999;
                border-bottom: 1px solid var(--border-light);
            }
        }
        @media (max-width: 768px) {
            .hero-center h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pain-grid {
                grid-template-columns: 1fr;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .steps-list {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-side {
                flex-direction: column;
            }
            .hero-value-card {
                min-width: auto;
            }
            .brand-intro-card {
                padding: 24px;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .game-grid {
                grid-template-columns: 1fr 1fr;
            }
            .game-card-img {
                height: 120px;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .hero-btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta-btn-group {
                flex-direction: column;
                align-items: center;
            }
            .hero-center h1 {
                font-size: 1.5rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-lg {
                padding: 50px 0;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #c0392b;
            --primary-dark: #962d22;
            --primary-light: #e74c3c;
            --primary-soft: #fdedec;
            --accent: #f39c12;
            --accent-dark: #d68910;
            --accent-light: #fdebd0;
            --bg: #fafaf8;
            --bg-white: #ffffff;
            --bg-dark: #1a1a1a;
            --bg-darker: #111111;
            --bg-card: #ffffff;
            --bg-alt: #f5f3ef;
            --bg-warm: #fdf8f3;
            --text: #1e1e1e;
            --text-strong: #0d0d0d;
            --text-weak: #5c5c5c;
            --text-muted: #888888;
            --text-light: #aaaaaa;
            --text-inverse: #ffffff;
            --border: #e0dcd5;
            --border-light: #ece8e2;
            --border-strong: #c9c4bb;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 50%;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --nav-height: 68px;
            --container-max: 1240px;
            --container-narrow: 960px;
            --section-gap: 64px;
            --section-gap-lg: 88px;
            --card-pad: 28px;
            --card-pad-sm: 20px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
        }

        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-links>a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.93rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links>a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .nav-links>a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

        .nav-mega-trigger {
            position: relative;
        }

        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.93rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
            gap: 5px;
        }

        .nav-mega-trigger>a i {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
        }

        .nav-mega-trigger>a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

        .nav-mega-trigger:hover>a i {
            transform: rotate(180deg);
        }

        .nav-mega-trigger:hover>a {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 20px 16px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            min-width: 520px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition-base);
            border: 1px solid var(--border-light);
            z-index: 1001;
        }

        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(4px);
        }

        .mega-card {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            background: transparent;
            text-decoration: none;
            color: inherit;
        }

        .mega-card:hover {
            background: var(--bg-alt);
            color: inherit;
        }

        .mega-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .mega-title {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-strong);
            line-height: 1.3;
        }

        .mega-sub {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.4;
            margin-top: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn-nav {
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.88rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-nav-outline {
            border: 1.5px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }

        .btn-nav-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn-nav-solid {
            background: var(--primary);
            color: #fff;
            border: 1.5px solid var(--primary);
        }

        .btn-nav-solid:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition-fast);
        }

        .mobile-toggle:hover {
            background: var(--bg-alt);
        }

        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text-strong);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-white);
            z-index: 999;
            padding: 20px 28px;
            overflow-y: auto;
            flex-direction: column;
            gap: 6px;
        }

        .mobile-nav.active {
            display: flex;
        }

        .mobile-nav a {
            display: block;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 1rem;
            color: var(--text);
            transition: all var(--transition-fast);
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .mobile-nav .btn-nav {
            text-align: center;
            margin-top: 8px;
            padding: 13px 20px;
            font-size: 0.95rem;
        }

        /* Section Spacing */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-lg {
            padding: var(--section-gap-lg) 0;
        }

        .section-sm {
            padding: 40px 0;
        }

        /* Section Titles */
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1.08rem;
            color: var(--text-weak);
            line-height: 1.7;
            max-width: 680px;
        }

        .section-title-sm {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.35;
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            text-align: center;
            justify-content: center;
            border: 2px solid transparent;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius-xs);
        }

        /* Cards */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: var(--card-pad);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--border);
        }

        .card-accent {
            border-left: 4px solid var(--accent);
        }

        .card-primary-border {
            border-top: 3px solid var(--primary);
        }

        /* Badge */
        .badge {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .badge-primary {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .badge-accent {
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        .badge-hot {
            background: #ffe0e0;
            color: #c0392b;
        }

        /* Form */
        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-strong);
            margin-bottom: 6px;
        }

        .form-input {
            width: 100%;
            padding: 13px 16px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            background: var(--bg-white);
            color: var(--text);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.08);
        }

        .form-input::placeholder {
            color: var(--text-light);
        }

        /* Stats */
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            letter-spacing: -0.03em;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-top: 6px;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 20px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-light);
        }

        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-strong);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 12px;
        }

        /* Step Timeline */
        .step-list {
            display: flex;
            gap: 0;
            counter-reset: step;
            flex-wrap: wrap;
        }

        .step-item {
            flex: 1;
            min-width: 200px;
            position: relative;
            padding: 28px 20px;
            text-align: center;
            counter-increment: step;
        }

        .step-item::before {
            content: counter(step);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-full);
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }

        .step-item::after {
            content: '';
            position: absolute;
            top: 52px;
            right: -30px;
            width: 60px;
            height: 2px;
            background: var(--border);
        }

        .step-item:last-child::after {
            display: none;
        }

        .step-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-strong);
            margin-bottom: 6px;
        }

        .step-desc {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.5;
        }

        /* Testimonial */
        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .testimonial-card::before {
            content: '\201C';
            font-size: 4rem;
            color: var(--primary-soft);
            position: absolute;
            top: 10px;
            left: 20px;
            line-height: 1;
            font-family: var(--font-display);
        }

        .testimonial-text {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
            padding-top: 20px;
            margin-bottom: 16px;
        }

        .testimonial-author {
            font-weight: 700;
            color: var(--text-strong);
            font-size: 0.9rem;
        }

        .testimonial-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            color: var(--text-inverse);
            padding: 50px 0 30px;
            margin-top: var(--section-gap-lg);
        }

        .site-footer h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            align-items: center;
        }

        .footer-links-row {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .footer-links-row a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }

        .footer-links-row a:hover {
            color: #fff;
        }

        .footer-links-row span {
            color: rgba(255, 255, 255, 0.2);
        }

        /* Hero specific */
        .hero-form-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--border-light);
        }

        .hero-form-wrap h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 6px;
        }

        .hero-form-wrap .form-hint {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        /* Responsive */
        @media (max-width: 1100px) {
            .nav-links>a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }

            .nav-links {
                gap: 2px;
            }

            .header-actions .btn-nav {
                padding: 7px 14px;
                font-size: 0.82rem;
            }

            .mega-panel {
                min-width: 400px;
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 900px) {
            .nav-links {
                display: none;
            }

            .header-actions {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .mobile-nav {
                display: none;
            }

            .mobile-nav.active {
                display: flex;
            }

            .section-title {
                font-size: 1.7rem;
            }

            .section-subtitle {
                font-size: 0.95rem;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .step-list {
                flex-direction: column;
                gap: 0;
            }

            .step-item {
                min-width: auto;
                text-align: left;
                display: flex;
                align-items: flex-start;
                gap: 16px;
                padding: 16px 0;
            }

            .step-item::before {
                flex-shrink: 0;
                margin-bottom: 0;
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }

            .step-item::after {
                display: none;
            }

            .mega-panel {
                min-width: auto;
                width: 100%;
                left: 0;
                transform: translateY(8px);
                grid-template-columns: 1fr;
            }

            .nav-mega-trigger:hover .mega-panel {
                transform: translateY(4px);
            }
        }

        @media (max-width: 600px) {
            .container {
                padding: 0 16px;
            }

            .header-inner {
                padding: 0 16px;
            }

            .section {
                padding: 40px 0;
            }

            .section-lg {
                padding: 50px 0;
            }

            .section-title {
                font-size: 1.45rem;
            }

            .section-subtitle {
                font-size: 0.9rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .hero-form-wrap {
                padding: 20px;
            }

            .card {
                padding: var(--card-pad-sm);
            }

            .stat-number {
                font-size: 2rem;
            }
        }

        /* Additional Page-Specific Styles */
        .bg-alt-section {
            background: var(--bg-alt);
        }

        .bg-warm-section {
            background: var(--bg-warm);
        }

        .bg-dark-section {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }

        .bg-dark-section .section-title,
        .bg-dark-section .section-title-sm {
            color: #fff;
        }

        .bg-dark-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .bg-dark-section .stat-number {
            color: var(--accent);
        }

        .bg-dark-section .stat-label {
            color: rgba(255, 255, 255, 0.6);
        }

        .bg-dark-section .card {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.1);
            color: #fff;
        }

        .bg-dark-section .card .text-weak {
            color: rgba(255, 255, 255, 0.6);
        }

        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        @media (max-width: 768px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }

            .grid-3 {
                grid-template-columns: 1fr 1fr;
            }

            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 520px) {
            .grid-3 {
                grid-template-columns: 1fr;
            }

            .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        .text-center {
            text-align: center;
        }

        .mb-8 {
            margin-bottom: 8px;
        }

        .mb-16 {
            margin-bottom: 16px;
        }

        .mb-24 {
            margin-bottom: 24px;
        }

        .mb-32 {
            margin-bottom: 32px;
        }

        .mb-48 {
            margin-bottom: 48px;
        }

        .mt-16 {
            margin-top: 16px;
        }

        .mt-24 {
            margin-top: 24px;
        }

        .highlight-box {
            background: var(--accent-light);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            border-left: 4px solid var(--accent);
        }

        .highlight-box p {
            font-weight: 500;
            color: var(--text-strong);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .icon-circle {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            flex-shrink: 0;
        }

        .icon-circle-red {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .icon-circle-gold {
            background: var(--accent-light);
            color: var(--accent-dark);
        }

/* roulang page: category4 */
:root {
            --primary: #c0392b;
            --primary-dark: #962d22;
            --primary-light: #e74c3c;
            --primary-soft: #fdedec;
            --accent: #f39c12;
            --accent-dark: #d68910;
            --accent-light: #fdebd0;
            --bg: #fafaf8;
            --bg-white: #ffffff;
            --bg-dark: #1a1a1a;
            --bg-darker: #111111;
            --bg-card: #ffffff;
            --bg-alt: #f5f3ef;
            --text: #1e1e1e;
            --text-strong: #0d0d0d;
            --text-weak: #5c5c5c;
            --text-muted: #888888;
            --text-light: #aaaaaa;
            --text-inverse: #ffffff;
            --border: #e0dcd5;
            --border-light: #ece8e2;
            --border-strong: #c9c4bb;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 50%;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --nav-height: 68px;
            --container-max: 1240px;
            --container-narrow: 960px;
            --section-gap: 64px;
            --section-gap-lg: 88px;
            --card-pad: 28px;
            --card-pad-sm: 20px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
        }

        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-wrap:hover {
            color: inherit;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-links>a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.93rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links>a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }

        .nav-links>a.active {
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 600;
        }

        .nav-mega-trigger {
            position: relative;
        }

        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.93rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-mega-trigger>a i {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
        }

        .nav-mega-trigger:hover>a {
            background: var(--bg-alt);
            color: var(--primary);
        }

        .nav-mega-trigger:hover>a i {
            transform: rotate(180deg);
        }

        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 16px;
            display: grid;
            grid-template-columns: repeat(3, 200px);
            gap: 10px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition-base);
            border: 1px solid var(--border-light);
            z-index: 1001;
        }

        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(4px);
        }

        .mega-card {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            background: transparent;
        }

        .mega-card:hover {
            background: var(--bg-alt);
            color: inherit;
        }

        .mega-icon {
            width: 38px;
            height: 38px;
            background: var(--primary-soft);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
        }

        .mega-title {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-strong);
        }

        .mega-sub {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn-nav {
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.88rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-nav-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }

        .btn-nav-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn-nav-solid {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }

        .btn-nav-solid:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 36px;
            height: 36px;
            justify-content: center;
            align-items: center;
            border-radius: var(--radius-xs);
            flex-shrink: 0;
        }

        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text-strong);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Section Common */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-lg {
            padding: var(--section-gap-lg) 0;
        }

        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
        }

        .section-title {
            font-family: var(--font-display);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-dark .section-title {
            color: var(--text-inverse);
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-weak);
            max-width: 680px;
            line-height: 1.7;
        }

        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }

        /* Hero Section - 裂变邀请 */
        .hero-advanced {
            position: relative;
            padding: 80px 0 70px;
            background: linear-gradient(170deg, #1a1208 0%, #2d1f0e 30%, #1a1a1a 100%);
            overflow: hidden;
            color: #fff;
        }

        .hero-advanced::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }

        .hero-advanced .container {
            position: relative;
            z-index: 1;
        }

        .hero-adv-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .hero-adv-content {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .hero-adv-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(243, 156, 18, 0.2);
            border: 1px solid rgba(243, 156, 18, 0.4);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 8px 16px;
            border-radius: 20px;
            width: fit-content;
        }

        .hero-adv-badge i {
            font-size: 0.9rem;
        }

        .hero-adv-title {
            font-family: var(--font-display);
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.2;
            color: #fff;
        }

        .hero-adv-title span {
            color: var(--accent);
        }

        .hero-adv-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            max-width: 500px;
        }

        .hero-adv-rewards {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .reward-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: all var(--transition-base);
            min-width: 150px;
        }

        .reward-card.unlocked {
            background: rgba(243, 156, 18, 0.15);
            border-color: rgba(243, 156, 18, 0.5);
        }

        .reward-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .reward-icon.bronze {
            background: rgba(205, 127, 50, 0.3);
            color: #cd7f32;
        }

        .reward-icon.silver {
            background: rgba(192, 192, 192, 0.3);
            color: #c0c0c0;
        }

        .reward-icon.gold {
            background: rgba(255, 215, 0, 0.3);
            color: #ffd700;
        }

        .reward-info {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.4;
        }

        .reward-info strong {
            display: block;
            font-size: 0.9rem;
            color: #fff;
            font-weight: 600;
        }

        .progress-wrap {
            background: rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            padding: 18px 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .progress-info {
            display: flex;
            justify-content: space-between;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.7);
        }

        .progress-info strong {
            color: var(--accent);
            font-weight: 700;
        }

        .progress-bar-outer {
            height: 10px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            overflow: hidden;
            position: relative;
        }

        .progress-bar-inner {
            height: 100%;
            background: linear-gradient(90deg, var(--accent), #f7dc6f);
            border-radius: 10px;
            transition: width 0.6s ease;
            width: 40%;
            position: relative;
        }

        .progress-bar-inner::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 18px;
            height: 18px;
            background: #fff;
            border-radius: 50%;
            box-shadow: 0 0 10px rgba(243, 156, 18, 0.6);
        }

        .progress-markers {
            display: flex;
            justify-content: space-between;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.5);
            padding: 0 2px;
        }

        .hero-adv-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-hero-invite {
            background: var(--accent);
            color: #1a1208;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 6px 24px rgba(243, 156, 18, 0.35);
        }

        .btn-hero-invite:hover {
            background: #f7b32b;
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(243, 156, 18, 0.5);
        }

        .btn-hero-outline {
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
        }

        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .hero-adv-visual {
            display: flex;
            flex-direction: column;
            gap: 16px;
            align-items: center;
        }

        .hero-adv-img-card {
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            padding: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            overflow: hidden;
        }

        .hero-adv-img-card img {
            border-radius: var(--radius-md);
            width: 100%;
            height: auto;
        }

        .hero-adv-stats-row {
            display: flex;
            gap: 20px;
            width: 100%;
        }

        .hero-stat-mini {
            flex: 1;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
            padding: 14px 16px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-stat-mini .stat-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
        }

        .hero-stat-mini .stat-label {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 2px;
        }

        /* Pain Points Section */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .pain-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--card-pad);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .pain-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .pain-card .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 14px;
            background: #fef2f2;
            color: #dc2626;
        }

        .pain-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-strong);
        }

        .pain-card p {
            font-size: 0.93rem;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* Solution Section */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            margin-top: 36px;
        }

        .solution-card {
            display: flex;
            gap: 18px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--card-pad);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            align-items: flex-start;
        }

        .solution-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .solution-card .sol-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            flex-shrink: 0;
        }

        .solution-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 6px;
        }

        .solution-card p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.65;
        }

        /* Path Section */
        .path-timeline {
            display: flex;
            flex-direction: column;
            gap: 0;
            margin-top: 36px;
            position: relative;
            padding-left: 40px;
        }

        .path-timeline::before {
            content: '';
            position: absolute;
            left: 18px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--primary-light), var(--accent), var(--primary));
            border-radius: 3px;
        }

        .path-step {
            position: relative;
            padding: 24px 0 24px 36px;
            transition: all var(--transition-base);
        }

        .path-step::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 30px;
            width: 16px;
            height: 16px;
            background: var(--bg-white);
            border: 3px solid var(--primary);
            border-radius: 50%;
            z-index: 2;
            transition: all var(--transition-base);
        }

        .path-step:hover::before {
            background: var(--primary);
            box-shadow: 0 0 0 8px rgba(192, 57, 43, 0.15);
        }

        .path-step-inner {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--card-pad);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }

        .path-step-inner:hover {
            box-shadow: var(--shadow-md);
        }

        .path-step-inner .step-num {
            display: inline-block;
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 6px;
            font-family: var(--font-display);
        }

        .path-step-inner h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 6px;
        }

        .path-step-inner p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* Tips Cards Section */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .tip-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .tip-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }

        .tip-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .tip-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .tip-card:hover .tip-card-img img {
            transform: scale(1.06);
        }

        .tip-card-body {
            padding: var(--card-pad-sm);
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .tip-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            background: var(--primary-soft);
            color: var(--primary);
            width: fit-content;
        }

        .tip-card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-strong);
        }

        .tip-card-body p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.6;
            flex: 1;
        }

        .tip-card-link {
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .tip-card-link:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

        /* Stats Section */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 36px;
        }

        .stat-block {
            text-align: center;
            padding: 28px 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-base);
        }

        .stat-block:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }

        .stat-block .stat-big {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            font-family: var(--font-display);
            line-height: 1;
        }

        .stat-block .stat-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 8px;
        }

        /* Testimonials */
        .testi-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .testi-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--card-pad);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            position: relative;
        }

        .testi-card::before {
            content: '\201C';
            position: absolute;
            top: 10px;
            left: 18px;
            font-size: 4rem;
            color: var(--primary-soft);
            font-family: var(--font-display);
            line-height: 1;
            pointer-events: none;
            z-index: 0;
        }

        .testi-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .testi-card .testi-text {
            font-size: 0.93rem;
            color: var(--text-weak);
            line-height: 1.7;
            position: relative;
            z-index: 1;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testi-author {
            display: flex;
            align-items: center;
            gap: 10px;
            position: relative;
            z-index: 1;
        }

        .testi-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .testi-author-info {
            font-size: 0.85rem;
        }

        .testi-author-info strong {
            display: block;
            color: var(--text-strong);
            font-weight: 600;
        }

        .testi-author-info span {
            color: var(--text-muted);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 36px;
            max-width: 800px;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--border-strong);
        }

        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-strong);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: all var(--transition-fast);
            background: transparent;
            width: 100%;
            text-align: left;
        }

        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(160deg, #1a0f05 0%, #2d1a08 40%, #1a1a1a 100%);
            position: relative;
            overflow: hidden;
            padding: 70px 0;
            text-align: center;
            color: #fff;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-family: var(--font-display);
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .cta-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-btns {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-primary {
            background: var(--accent);
            color: #1a1208;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 6px 24px rgba(243, 156, 18, 0.35);
        }

        .btn-cta-primary:hover {
            background: #f7b32b;
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(243, 156, 18, 0.5);
            color: #1a1208;
        }

        .btn-cta-outline {
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
        }

        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 30px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            align-items: center;
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        .footer-links-row {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .footer-links-row a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.8rem;
            transition: color var(--transition-fast);
        }

        .footer-links-row a:hover {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-adv-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-adv-title {
                font-size: 2.2rem;
            }
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                display: none;
            }
            .header-actions {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .mega-panel {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .hero-adv-title {
                font-size: 1.8rem;
            }
            .hero-adv-rewards {
                flex-direction: column;
            }
            .pain-grid {
                grid-template-columns: 1fr;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .testi-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
            .section {
                padding: 40px 0;
            }
            .section-lg {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .hero-adv-stats-row {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .path-timeline {
                padding-left: 28px;
            }
            .path-step {
                padding-left: 24px;
            }
            .path-step::before {
                left: -20px;
                width: 12px;
                height: 12px;
            }
            .path-timeline::before {
                left: 12px;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .hero-advanced {
                padding: 50px 0 40px;
            }
            .cta-section {
                padding: 50px 0;
            }
            .cta-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .hero-adv-title {
                font-size: 1.5rem;
            }
            .hero-adv-desc {
                font-size: 0.95rem;
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
            .stat-block .stat-big {
                font-size: 2.2rem;
            }
            .btn-hero-invite,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
            }
            .hero-adv-actions {
                flex-direction: column;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }

        /* Mobile nav panel */
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-white);
            z-index: 999;
            flex-direction: column;
            padding: 20px;
            gap: 6px;
            overflow-y: auto;
        }

        .mobile-nav-panel.active {
            display: flex;
        }

        .mobile-nav-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 1rem;
            color: var(--text);
            transition: all var(--transition-fast);
        }

        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .mobile-nav-panel .mobile-actions {
            margin-top: 16px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .mobile-nav-panel .btn-nav {
            width: 100%;
            text-align: center;
            padding: 12px;
            font-size: 0.95rem;
        }

/* roulang page: category6 */
:root {
            --primary: #c0392b;
            --primary-dark: #962d22;
            --primary-light: #e74c3c;
            --primary-soft: #fdedec;
            --accent: #f39c12;
            --accent-dark: #d68910;
            --accent-light: #fdebd0;
            --bg: #fafaf8;
            --bg-white: #ffffff;
            --bg-dark: #1a1a1a;
            --bg-darker: #111111;
            --bg-card: #ffffff;
            --bg-alt: #f5f3ef;
            --bg-security: #f0faf5;
            --bg-shield: #eef6ff;
            --text: #1e1e1e;
            --text-strong: #0d0d0d;
            --text-weak: #5c5c5c;
            --text-muted: #888888;
            --text-light: #aaaaaa;
            --text-inverse: #ffffff;
            --border: #e0dcd5;
            --border-light: #ece8e2;
            --border-strong: #c9c4bb;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.07);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 50%;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --nav-height: 68px;
            --container-max: 1240px;
            --container-narrow: 960px;
            --section-gap: 64px;
            --section-gap-lg: 88px;
            --card-pad: 28px;
            --card-pad-sm: 20px;
            --green-safe: #27ae60;
            --green-safe-light: #eafaf1;
            --blue-shield: #2980b9;
            --blue-shield-light: #eaf4fb;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
        }

        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav-links>a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links>a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .nav-links>a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-links>a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .nav-mega-trigger {
            position: relative;
        }

        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-mega-trigger>a i {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
        }

        .nav-mega-trigger:hover>a {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .nav-mega-trigger:hover>a i {
            transform: rotate(180deg);
        }

        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 20px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
            min-width: 520px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition-base);
            border: 1px solid var(--border-light);
            z-index: 999;
        }

        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(4px);
        }

        .mega-card {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding: 16px;
            border-radius: var(--radius-md);
            background: var(--bg);
            transition: all var(--transition-fast);
            text-decoration: none;
            color: inherit;
            border: 1px solid transparent;
        }

        .mega-card:hover {
            background: var(--primary-soft);
            border-color: var(--primary-soft);
            color: inherit;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .mega-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
        }

        .mega-title {
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-strong);
            line-height: 1.3;
        }

        .mega-sub {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.3;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn-nav {
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-nav-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }

        .btn-nav-outline:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-md);
        }

        .btn-nav-solid {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }

        .btn-nav-solid:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: var(--shadow-md);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
        }

        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-strong);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            white-space: nowrap;
            cursor: pointer;
            border: none;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-md);
            font-weight: 700;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            border-radius: var(--radius-xs);
        }

        /* Section */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-lg {
            padding: var(--section-gap-lg) 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 14px;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-weak);
            line-height: 1.7;
            max-width: 700px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-header .section-subtitle {
            margin: 0 auto;
        }

        /* Hero Bento */
        .hero-bento {
            padding: 56px 0 64px;
            background: linear-gradient(180deg, #fefefe 0%, #f9f8f5 30%, #f5f3ef 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-bento::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 450px;
            height: 450px;
            background: radial-gradient(circle, rgba(192, 57, 43, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-bento::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(39, 174, 96, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .bento-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            grid-template-rows: auto auto;
            gap: 20px;
            position: relative;
            z-index: 1;
        }

        .bento-main {
            grid-row: 1 / 3;
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            box-shadow: var(--shadow-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
            border: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }

        .bento-main::after {
            content: '';
            position: absolute;
            bottom: -30px;
            right: -30px;
            width: 180px;
            height: 180px;
            background: url('/assets/images/coverpic/cover-6.webp') center/cover no-repeat;
            border-radius: var(--radius-lg);
            opacity: 0.12;
            pointer-events: none;
        }

        .bento-main .hero-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--green-safe-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--green-safe);
            margin-bottom: 20px;
        }

        .bento-main h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .bento-main h1 span {
            color: var(--primary);
        }

        .bento-main .hero-desc {
            font-size: 1.1rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 480px;
        }

        .bento-main .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .bento-mini {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: flex-start;
            gap: 16px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            cursor: default;
            position: relative;
        }

        .bento-mini:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--border-strong);
        }

        .bento-mini-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
        }

        .bento-mini-icon.shield {
            background: var(--blue-shield-light);
            color: var(--blue-shield);
        }

        .bento-mini-icon.lock {
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        .bento-mini-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 4px;
            line-height: 1.3;
        }

        .bento-mini-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .bento-cta-strip {
            grid-column: 2;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 22px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            box-shadow: var(--shadow-lg);
            color: #fff;
            flex-wrap: wrap;
        }

        .bento-cta-strip .strip-text {
            font-weight: 600;
            font-size: 1rem;
            line-height: 1.4;
        }

        .bento-cta-strip .strip-text strong {
            font-size: 1.15rem;
            display: block;
        }

        .btn-strip {
            background: #fff;
            color: var(--primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            border: none;
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-strip:hover {
            background: #f0f0f0;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            color: var(--primary-dark);
        }

        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--card-pad);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--border-strong);
        }

        .card-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        .card-icon.green {
            background: var(--green-safe-light);
            color: var(--green-safe);
        }

        .card-icon.blue {
            background: var(--blue-shield-light);
            color: var(--blue-shield);
        }

        .card-icon.red {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .card-icon.accent {
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        .card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.35;
        }

        .card p {
            font-size: 0.92rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        .card-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-alt);
        }

        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .card:hover .card-image img {
            transform: scale(1.04);
        }

        /* Security stat cards */
        .stat-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-number.green {
            color: var(--green-safe);
        }

        .stat-number.blue {
            color: var(--blue-shield);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-weak);
            font-weight: 500;
        }

        /* Process steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .step-circle {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-full);
            background: var(--bg-white);
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            margin: 0 auto 16px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-md);
        }

        .process-step:hover .step-circle {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-lg);
            transform: scale(1.06);
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* Testimonial */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition-base);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: 16px;
            left: 20px;
            font-size: 3.5rem;
            color: var(--primary-soft);
            font-family: var(--font-display);
            line-height: 1;
            pointer-events: none;
        }

        .testimonial-card .quote {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 16px;
            padding-top: 16px;
            position: relative;
            z-index: 1;
        }

        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 10px;
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .author-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-strong);
        }

        .author-role {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--border-strong);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-strong);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: var(--bg-alt);
        }

        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(160deg, #1a1a1a 0%, #1e1e1e 40%, #1a1a1a 100%);
            color: #fff;
            text-align: center;
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(192, 57, 43, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .cta-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section .cta-subtitle {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-row {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* Badge */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            white-space: nowrap;
        }

        .badge-green {
            background: var(--green-safe-light);
            color: var(--green-safe);
        }

        .badge-blue {
            background: var(--blue-shield-light);
            color: var(--blue-shield);
        }

        .badge-red {
            background: var(--primary-soft);
            color: var(--primary);
        }

        /* Highlight box */
        .highlight-box {
            background: var(--bg-white);
            border-left: 5px solid var(--green-safe);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin: 20px 0;
        }

        .highlight-box .hl-icon {
            font-size: 1.8rem;
            color: var(--green-safe);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .highlight-box .hl-content h4 {
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 4px;
        }

        .highlight-box .hl-content p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            color: #fff;
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            justify-content: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-links-row {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .footer-links-row a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }

        .footer-links-row a:hover {
            color: #fff;
        }

        .footer-links-row span {
            color: rgba(255, 255, 255, 0.3);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .bento-grid {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }
            .bento-main {
                grid-row: auto;
            }
            .bento-cta-strip {
                grid-column: auto;
            }
            .stat-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps::before {
                display: none;
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                display: none;
            }
            .header-actions {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .bento-main h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .bento-grid {
                grid-template-columns: 1fr;
            }
            .bento-main {
                padding: 32px 24px;
            }
            .bento-main h1 {
                font-size: 1.7rem;
            }
            .bento-mini {
                padding: 20px 16px;
            }
            .bento-cta-strip {
                flex-direction: column;
                text-align: center;
                padding: 18px 20px;
            }
            .stat-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section {
                padding: 40px 0;
            }
            .section-lg {
                padding: 52px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .hero-bento {
                padding: 32px 0 40px;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .cta-section .cta-title {
                font-size: 1.5rem;
            }
            .highlight-box {
                flex-direction: column;
                gap: 10px;
            }
        }

        @media (max-width: 520px) {
            .stat-row {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .bento-main h1 {
                font-size: 1.45rem;
            }
            .bento-main .hero-desc {
                font-size: 0.95rem;
            }
            .bento-main .hero-actions {
                flex-direction: column;
            }
            .bento-main .hero-actions .btn {
                width: 100%;
                text-align: center;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .btn-lg {
                padding: 14px 24px;
                font-size: 1rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        /* Mobile nav panel */
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            z-index: 999;
            flex-direction: column;
            padding: 20px 16px;
            gap: 6px;
            overflow-y: auto;
        }

        .mobile-nav-panel.open {
            display: flex;
        }

        .mobile-nav-panel a {
            display: block;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 1rem;
            color: var(--text);
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .mobile-nav-panel a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .mobile-nav-panel a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .mobile-nav-panel .mobile-actions {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }

        .mobile-nav-panel .mobile-actions .btn-nav {
            width: 100%;
            text-align: center;
            padding: 12px 18px;
            font-size: 0.95rem;
        }

/* roulang page: category5 */
:root {
            --primary: #c0392b;
            --primary-dark: #962d22;
            --primary-light: #e74c3c;
            --primary-soft: #fdedec;
            --accent: #f39c12;
            --accent-dark: #d68910;
            --accent-light: #fdebd0;
            --bg: #fafaf8;
            --bg-white: #ffffff;
            --bg-dark: #1a1a1a;
            --bg-darker: #111111;
            --bg-card: #ffffff;
            --bg-alt: #f5f3ef;
            --text: #1e1e1e;
            --text-strong: #0d0d0d;
            --text-weak: #5c5c5c;
            --text-muted: #888888;
            --text-light: #aaaaaa;
            --text-inverse: #ffffff;
            --border: #e0dcd5;
            --border-light: #ece8e2;
            --border-strong: #c9c4bb;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 50%;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --nav-height: 68px;
            --container-max: 1240px;
            --container-narrow: 960px;
            --section-gap: 64px;
            --section-gap-lg: 88px;
            --card-pad: 28px;
            --card-pad-sm: 20px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
        }
        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links>a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links>a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .nav-links>a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-mega-trigger {
            position: relative;
        }
        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-mega-trigger>a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .nav-mega-trigger>a i {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
        }
        .nav-mega-trigger:hover>a i {
            transform: rotate(180deg);
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--border-light);
            padding: 16px;
            display: flex;
            gap: 12px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition-base);
            min-width: 440px;
            z-index: 1001;
        }
        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(4px);
        }
        .mega-card {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 6px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            flex: 1;
            background: var(--bg);
            text-decoration: none;
            color: var(--text);
        }
        .mega-card:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .mega-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
        }
        .mega-title {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-strong);
        }
        .mega-sub {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-nav {
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-nav-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-nav-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .btn-nav-solid {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }
        .btn-nav-solid:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            flex-shrink: 0;
        }
        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-strong);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Mobile Nav */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .mobile-nav-overlay.open {
            display: block;
            opacity: 1;
        }
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--nav-height);
            right: 0;
            width: 300px;
            max-width: 85vw;
            bottom: 0;
            background: var(--bg-white);
            z-index: 1000;
            padding: 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 4px;
            box-shadow: var(--shadow-xl);
            transform: translateX(100%);
            transition: transform var(--transition-base);
        }
        .mobile-nav-panel.open {
            display: flex;
            transform: translateX(0);
        }
        .mobile-nav-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 1rem;
            color: var(--text);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .mobile-nav-panel .btn-nav {
            text-align: center;
            margin-top: 8px;
        }

        /* Section spacing */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-lg {
            padding: var(--section-gap-lg) 0;
        }
        .section-sm {
            padding: 40px 0;
        }

        /* Hero */
        .hero-vip {
            position: relative;
            background: linear-gradient(160deg, #1a0a0a 0%, #2d1212 30%, #1a1a1a 100%);
            color: var(--text-inverse);
            padding: 80px 0 90px;
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }
        .hero-vip::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .hero-vip::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(243, 156, 18, 0.2) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        .hero-vip-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .hero-vip-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(243, 156, 18, 0.2);
            border: 1px solid rgba(243, 156, 18, 0.4);
            border-radius: 50px;
            padding: 8px 18px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .hero-vip-badge i {
            font-size: 0.85rem;
        }
        .hero-vip h1 {
            font-family: var(--font-display);
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            color: #fff;
        }
        .hero-vip h1 span {
            color: var(--accent);
            position: relative;
        }
        .hero-vip-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 480px;
        }
        .hero-vip-features {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 30px;
        }
        .hero-vip-feature-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.85);
        }
        .hero-vip-feature-item i {
            color: var(--accent);
            font-size: 1rem;
            width: 20px;
            text-align: center;
        }
        .hero-booking-card {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-xl);
            padding: 36px 32px;
            box-shadow: var(--shadow-xl);
        }
        .hero-booking-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: #fff;
        }
        .hero-booking-card .booking-subtitle {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 20px;
        }
        .booking-time-slots {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
            margin-bottom: 18px;
        }
        .booking-time-slot {
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.04);
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.88rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }
        .booking-time-slot:hover,
        .booking-time-slot.selected {
            border-color: var(--accent);
            background: rgba(243, 156, 18, 0.15);
            color: var(--accent);
        }
        .booking-time-slot i {
            font-size: 0.75rem;
        }
        .btn-hero-booking {
            width: 100%;
            padding: 14px 24px;
            background: var(--accent);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 6px;
        }
        .btn-hero-booking:hover {
            background: #f5b041;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(243, 156, 18, 0.4);
        }
        .booking-note {
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.4);
            margin-top: 12px;
        }

        /* Section Titles */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 12px;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .section-title {
            font-family: var(--font-display);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-weak);
            max-width: 640px;
            line-height: 1.7;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header.center {
            text-align: center;
        }
        .section-header.center .section-desc {
            margin: 0 auto;
        }

        /* Pain Points */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .pain-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: var(--card-pad);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .pain-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary-light);
            border-radius: 0 0 3px 3px;
        }
        .pain-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        .pain-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-strong);
        }
        .pain-card p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.65;
        }

        /* Solution */
        .solution-block {
            background: var(--bg-dark);
            color: var(--text-inverse);
            border-radius: var(--radius-xl);
            padding: 50px 48px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .solution-block .section-title {
            color: #fff;
        }
        .solution-block .section-desc {
            color: rgba(255, 255, 255, 0.65);
        }
        .solution-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 20px;
        }
        .solution-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.6;
        }
        .solution-list li i {
            color: var(--accent);
            margin-top: 3px;
            flex-shrink: 0;
        }
        .solution-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }
        .solution-visual img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        /* Tier Cards */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .tier-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            border: 2px solid var(--border-light);
            transition: all var(--transition-base);
            position: relative;
        }
        .tier-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .tier-card.featured {
            border-color: var(--accent);
            background: linear-gradient(180deg, #fffef8 0%, #fff 100%);
            box-shadow: var(--shadow-md);
        }
        .tier-card.featured::after {
            content: '最受欢迎';
            position: absolute;
            top: -13px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }
        .tier-icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-full);
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 700;
        }
        .tier-bronze .tier-icon-wrap {
            background: #f5e6d3;
            color: #8b6914;
        }
        .tier-silver .tier-icon-wrap {
            background: #e8e8e8;
            color: #6b6b6b;
        }
        .tier-gold .tier-icon-wrap {
            background: #fef3d5;
            color: #b8860b;
        }
        .tier-diamond .tier-icon-wrap {
            background: #e6f0ff;
            color: #2c5aa0;
        }
        .tier-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-strong);
        }
        .tier-card .tier-subtitle {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .tier-benefits {
            list-style: none;
            text-align: left;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-weak);
        }
        .tier-benefits li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .tier-benefits li i {
            color: #27ae60;
            font-size: 0.7rem;
            flex-shrink: 0;
        }

        /* Comparison Table */
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
            min-width: 700px;
        }
        .compare-table thead th {
            background: var(--bg-dark);
            color: #fff;
            padding: 16px 18px;
            font-weight: 600;
            text-align: center;
            font-size: 0.9rem;
        }
        .compare-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-lg) 0 0 0;
        }
        .compare-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }
        .compare-table tbody td {
            padding: 14px 18px;
            text-align: center;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-weak);
        }
        .compare-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text-strong);
        }
        .compare-table tbody tr:hover {
            background: var(--bg-alt);
        }
        .check-icon {
            color: #27ae60;
        }
        .cross-icon {
            color: #ccc;
        }
        .star-icon {
            color: var(--accent);
        }

        /* Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-number span {
            font-size: 1.2rem;
            font-weight: 600;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-weak);
            font-weight: 500;
        }

        /* Process */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .process-step-num {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-full);
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
        }
        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-strong);
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-weak);
            line-height: 1.55;
        }
        .process-connector {
            position: absolute;
            top: 26px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--card-pad);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }
        .testimonial-stars {
            color: var(--accent);
            font-size: 0.85rem;
            margin-bottom: 12px;
            display: flex;
            gap: 2px;
        }
        .testimonial-card blockquote {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
            border-left: 3px solid var(--primary-soft);
            padding-left: 14px;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            font-size: 0.9rem;
        }
        .testimonial-author strong {
            font-size: 0.9rem;
            color: var(--text-strong);
        }
        .testimonial-author span {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-strong);
        }
        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-strong);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 0.8rem;
            transition: transform var(--transition-fast);
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 22px;
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition-base);
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            padding: 0 22px 18px;
            max-height: 300px;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 70px 0;
            border-radius: var(--radius-xl);
            margin: 0 28px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .cta-section h2 {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 50px;
            transition: all var(--transition-base);
            position: relative;
            z-index: 1;
            letter-spacing: 0.02em;
        }
        .btn-cta-large:hover {
            background: var(--accent);
            color: #1a1a1a;
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
        }

        /* Brand Intro */
        .brand-intro-card {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .brand-intro-card h3 {
            font-family: var(--font-display);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-strong);
        }
        .brand-intro-card p {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.75;
        }
        .brand-intro-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 4/3;
        }
        .brand-intro-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 28px;
            margin-top: var(--section-gap-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom span {
            white-space: nowrap;
        }
        .footer-links-row {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-links-row a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.8rem;
        }
        .footer-links-row a:hover {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-vip-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-vip h1 {
                font-size: 2.2rem;
            }
            .tier-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-connector {
                display: none;
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-block {
                grid-template-columns: 1fr;
                padding: 36px 28px;
            }
            .brand-intro-card {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                display: none;
            }
            .header-actions {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .hero-vip {
                padding: 50px 0 60px;
                min-height: auto;
            }
            .hero-vip h1 {
                font-size: 1.8rem;
            }
            .hero-booking-card {
                padding: 24px 20px;
            }
            .booking-time-slots {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .tier-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .pain-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .cta-section {
                margin: 0 16px;
                padding: 48px 20px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .compare-table-wrap {
                font-size: 0.78rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-lg {
                padding: 56px 0;
            }
            .container {
                padding: 0 18px;
            }
        }

        @media (max-width: 520px) {
            .hero-vip h1 {
                font-size: 1.5rem;
            }
            .hero-vip-subtitle {
                font-size: 0.9rem;
            }
            .tier-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .booking-time-slots {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.4rem;
            }
        }

/* roulang page: category7 */
:root {
            --primary: #c0392b;
            --primary-dark: #962d22;
            --primary-light: #e74c3c;
            --primary-soft: #fdedec;
            --accent: #f39c12;
            --accent-dark: #d68910;
            --accent-light: #fdebd0;
            --bg: #fafaf8;
            --bg-white: #ffffff;
            --bg-dark: #1a1a1a;
            --bg-darker: #111111;
            --bg-card: #ffffff;
            --bg-alt: #f5f3ef;
            --text: #1e1e1e;
            --text-strong: #0d0d0d;
            --text-weak: #5c5c5c;
            --text-muted: #888888;
            --text-light: #aaaaaa;
            --text-inverse: #ffffff;
            --border: #e0dcd5;
            --border-light: #ece8e2;
            --border-strong: #c9c4bb;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 50%;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --nav-height: 68px;
            --container-max: 1240px;
            --container-narrow: 960px;
            --section-gap: 64px;
            --section-gap-lg: 88px;
            --card-pad: 28px;
            --card-pad-sm: 20px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
        }
        .container-narrow {
            max-width: var(--container-narrow);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links>a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            gap: 5px;
            white-space: nowrap;
        }
        .nav-links>a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .nav-links>a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-links>a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .nav-mega-trigger {
            position: relative;
        }
        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition-fast);
            gap: 5px;
            white-space: nowrap;
            cursor: pointer;
        }
        .nav-mega-trigger>a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 20px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            min-width: 520px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition-base);
            border: 1px solid var(--border-light);
            z-index: 1001;
        }
        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(4px);
        }
        .mega-card {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            background: var(--bg);
            text-decoration: none;
            color: var(--text);
        }
        .mega-card:hover {
            background: var(--primary-soft);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .mega-icon {
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 2px;
        }
        .mega-title {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-strong);
            line-height: 1.3;
        }
        .mega-card:hover .mega-title {
            color: var(--primary);
        }
        .mega-sub {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.4;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-nav {
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .btn-nav-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-nav-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-nav-solid {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }
        .btn-nav-solid:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition-fast);
        }
        .mobile-toggle:hover {
            background: var(--primary-soft);
        }
        .mobile-toggle span {
            width: 26px;
            height: 2.5px;
            background: var(--text-strong);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .section {
            padding: var(--section-gap) 0;
        }
        .section-lg {
            padding: var(--section-gap-lg) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--primary);
            margin-bottom: 12px;
            background: var(--primary-soft);
            padding: 5px 14px;
            border-radius: 20px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-weak);
            line-height: 1.7;
            max-width: 680px;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: #fff;
        }
        .btn-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            border: 2px solid var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: #fff;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-md);
        }
        .btn-xl {
            padding: 18px 44px;
            font-size: 1.15rem;
            border-radius: var(--radius-md);
            letter-spacing: 0.04em;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--card-pad);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--border);
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .hero-download {
            background: linear-gradient(180deg, #fefefe 0%, #f8f6f2 40%, #f5f3ef 100%);
            border-bottom: 1px solid var(--border-light);
            padding: 40px 0 56px;
        }
        .hero-download-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-download-content h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: -0.03em;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .hero-download-content .hero-desc {
            font-size: 1.1rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 500px;
        }
        .hero-download-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-weak);
        }
        .hero-badge i {
            color: var(--primary);
            font-size: 0.85rem;
        }
        .hero-download-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-download-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            max-width: 100%;
            border: 4px solid #fff;
        }
        .platform-cards {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .platform-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            border: 2px solid var(--border-light);
            transition: all var(--transition-base);
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }
        .platform-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .platform-card .platform-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-full);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
        }
        .platform-card .platform-name {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-strong);
        }
        .platform-card .platform-version {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .platform-card .platform-size {
            font-size: 0.78rem;
            color: var(--text-light);
        }
        .step-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            counter-reset: step;
        }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px 28px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            position: relative;
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }
        .step-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-full);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
        }
        .step-body h4 {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-strong);
            margin-bottom: 4px;
        }
        .step-body p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
        }
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
            font-size: 0.9rem;
        }
        .compare-table thead th {
            background: var(--bg-dark);
            color: #fff;
            padding: 14px 18px;
            text-align: center;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .compare-table tbody td {
            padding: 13px 18px;
            text-align: center;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-weak);
        }
        .compare-table tbody tr:nth-child(even) td {
            background: #fafaf8;
        }
        .compare-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text-strong);
        }
        .check-icon {
            color: #27ae60;
            font-weight: 700;
        }
        .cross-icon {
            color: #c0392b;
        }
        .spec-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .spec-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 22px 24px;
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .spec-card .spec-os {
            font-weight: 700;
            font-size: 1rem;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .spec-card .spec-detail {
            font-size: 0.85rem;
            color: var(--text-weak);
            line-height: 1.6;
        }
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .testimonial-stars {
            color: var(--accent);
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        .testimonial-text {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 14px;
            font-style: italic;
        }
        .testimonial-author {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-strong);
        }
        .testimonial-platform {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 500;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-q {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-strong);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            background: #fefefe;
            transition: background var(--transition-fast);
        }
        .faq-q:hover {
            background: var(--primary-soft);
        }
        .faq-q i {
            color: var(--primary);
            transition: transform var(--transition-base);
            font-size: 0.85rem;
        }
        .faq-a {
            padding: 0 24px 18px;
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .cta-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .cta-banner h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-banner p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-banner .btn {
            position: relative;
            z-index: 1;
        }
        .site-footer {
            background: var(--bg-darker);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 0;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            padding: 20px 0 28px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom span {
            white-space: nowrap;
        }
        .footer-links-row {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }
        .footer-links-row a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.8rem;
        }
        .footer-links-row a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links>a,
            .nav-mega-trigger>a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }
            .header-actions .btn-nav {
                padding: 7px 13px;
                font-size: 0.82rem;
            }
            .hero-download-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-download-content h1 {
                font-size: 1.9rem;
            }
            .platform-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .spec-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .mega-panel {
                min-width: 380px;
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .section {
                padding: 44px 0;
            }
            .section-lg {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            .desktop-nav-wrapper {
                display: none;
            }
            .nav-links {
                display: none;
            }
            .header-actions {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-links.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.mobile-open>a,
            .nav-links.mobile-open .nav-mega-trigger>a {
                padding: 12px 16px;
                font-size: 0.95rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .mega-panel {
                position: static;
                transform: none;
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
                min-width: auto;
                grid-template-columns: 1fr;
                box-shadow: none;
                border: none;
                padding: 8px 0 8px 20px;
                display: none;
            }
            .nav-mega-trigger.mega-open .mega-panel {
                display: grid;
            }
            .hero-download-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-download-content h1 {
                font-size: 1.6rem;
            }
            .platform-cards {
                grid-template-columns: 1fr 1fr;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
            .spec-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .cta-banner {
                padding: 32px 20px;
            }
            .cta-banner h3 {
                font-size: 1.4rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .compare-table-wrap {
                font-size: 0.78rem;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .platform-cards {
                grid-template-columns: 1fr;
            }
            .hero-download {
                padding: 24px 0 36px;
            }
            .hero-download-content h1 {
                font-size: 1.4rem;
            }
            .hero-download-badges {
                gap: 6px;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 5px 10px;
            }
            .btn-xl {
                padding: 14px 28px;
                font-size: 1rem;
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
            .stat-num {
                font-size: 2rem;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
                padding: 18px;
            }
            .cta-banner {
                padding: 24px 16px;
                border-radius: var(--radius-lg);
            }
            .section {
                padding: 32px 0;
            }
            .section-lg {
                padding: 40px 0;
            }
        }