/* roulang page: index */
:root {
            --brand-50: #f0f4f8;
            --brand-100: #dbe4ed;
            --brand-200: #bccadd;
            --brand-300: #91a9c4;
            --brand-400: #5f7ea6;
            --brand-500: #3c5e8a;
            --brand-600: #2c486e;
            --brand-700: #223a58;
            --brand-800: #16273d;
            --brand-900: #0f1a2b;
            --brand-950: #0a1220;
            --accent-50: #fef3e6;
            --accent-100: #fde3c8;
            --accent-200: #fac790;
            --accent-300: #f5a34e;
            --accent-400: #ef8618;
            --accent-500: #d96f0e;
            --accent-600: #b3550b;
            --accent-700: #8f410d;
            --accent-800: #6e330e;
            --accent-900: #562a0d;
            --surface: #ffffff;
            --surface-muted: #f7f9fc;
            --surface-dark: #0f1a2b;
            --text-primary: #0f1a2b;
            --text-secondary: #3d4c62;
            --text-muted: #6b7a93;
            --text-inverse: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(15, 26, 43, 0.06), 0 1px 2px rgba(15, 26, 43, 0.04);
            --shadow-md: 0 6px 18px rgba(15, 26, 43, 0.08), 0 2px 6px rgba(15, 26, 43, 0.04);
            --shadow-lg: 0 18px 40px rgba(15, 26, 43, 0.12), 0 6px 16px rgba(15, 26, 43, 0.06);
            --shadow-xl: 0 28px 60px rgba(15, 26, 43, 0.16), 0 10px 24px rgba(15, 26, 43, 0.08);
            --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 420ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--accent-500);
        }

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(239, 134, 24, 0.45);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        @media (min-width: 1440px) {
            .container {
                max-width: 1360px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 68px;
            padding-top: 10px;
            padding-bottom: 10px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--brand-800);
            white-space: nowrap;
        }

        .nav-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }

        .nav-links {
            display: none;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 0.88rem;
            font-weight: 550;
            color: var(--text-secondary);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--brand-700);
            background: var(--brand-50);
        }

        .nav-link.active {
            color: #fff;
            background: var(--brand-700);
            font-weight: 650;
        }

        .nav-cta-group {
            display: none;
            align-items: center;
            gap: 10px;
        }

        .nav-search-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 999px;
            background: var(--surface-muted);
            border: 1px solid var(--border-light);
            color: var(--text-muted);
            font-size: 0.85rem;
            cursor: pointer;
            transition: border-color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

        .nav-search-btn:hover {
            border-color: var(--brand-300);
            background: var(--brand-50);
        }

        .nav-cta-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 999px;
            background: var(--brand-700);
            color: #fff;
            font-size: 0.88rem;
            font-weight: 650;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta-link:hover {
            background: var(--brand-800);
            color: #fff;
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            background: var(--surface);
            cursor: pointer;
            color: var(--text-primary);
            font-size: 1.2rem;
            transition: background var(--transition-fast), border-color var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-toggle:hover {
            background: var(--brand-50);
            border-color: var(--brand-300);
        }

        .mobile-toggle[aria-expanded="true"] {
            background: var(--brand-700);
            color: #fff;
            border-color: var(--brand-700);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 20px 20px;
            border-top: 1px solid var(--border-light);
            background: #fff;
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
        }

        .mobile-menu.open {
            display: flex;
            max-height: 520px;
        }

        .mobile-menu .nav-link {
            display: flex;
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
        }

        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
            }
            .nav-cta-group {
                display: flex;
            }
            .mobile-toggle {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        @media (max-width: 1023px) {
            .nav-links {
                display: none;
            }
            .nav-cta-group {
                display: none;
            }
        }

        /* Hero Bento */
        .hero-section {
            position: relative;
            padding: 40px 0 60px;
            background: linear-gradient(180deg, #f7fafd 0%, #ffffff 100%);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -220px;
            right: -180px;
            width: 700px;
            height: 500px;
            background: radial-gradient(ellipse at center, rgba(60, 94, 138, 0.12), transparent 65%);
            pointer-events: none;
        }

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

        .bento-main {
            grid-column: 1 / -1;
            background: linear-gradient(135deg, #ffffff 0%, #f7fafd 100%);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            padding: 40px 28px;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .bento-main::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -60px;
            width: 320px;
            height: 220px;
            background: radial-gradient(ellipse at center, rgba(245, 163, 78, 0.18), transparent 65%);
            pointer-events: none;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: var(--accent-50);
            border: 1px solid var(--accent-100);
            color: var(--accent-700);
            font-size: 0.82rem;
            font-weight: 650;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }

        .hero-title {
            font-size: clamp(1.8rem, 5vw, 3.1rem);
            font-weight: 850;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--brand-900);
            max-width: 720px;
            margin-bottom: 16px;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 28px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 999px;
            background: var(--brand-700);
            color: #fff;
            font-weight: 650;
            font-size: 0.95rem;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: var(--shadow-sm);
            cursor: pointer;
            border: none;
        }

        .btn-primary:hover {
            background: var(--brand-800);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 999px;
            background: var(--accent-500);
            color: #fff;
            font-weight: 650;
            font-size: 0.95rem;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: var(--shadow-sm);
            cursor: pointer;
            border: none;
        }

        .btn-accent:hover {
            background: var(--accent-600);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 999px;
            background: transparent;
            border: 1.5px solid var(--border-medium);
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
            cursor: pointer;
        }

        .btn-outline:hover {
            border-color: var(--brand-400);
            background: var(--brand-50);
            color: var(--brand-700);
        }

        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px 40px;
            border-top: 1px solid var(--border-light);
            padding-top: 22px;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-value {
            font-size: 1.65rem;
            font-weight: 800;
            color: var(--brand-800);
            letter-spacing: -0.02em;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .bento-small {
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 12px;
            min-height: 170px;
        }

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

        .bento-small-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            background: var(--brand-50);
            color: var(--brand-600);
            flex-shrink: 0;
        }

        .bento-small h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--brand-800);
        }

        .bento-small p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .bento-cta-strip {
            grid-column: 1 / -1;
            background: linear-gradient(135deg, var(--brand-800), var(--brand-950));
            border-radius: var(--radius-lg);
            padding: 22px 26px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            color: #fff;
        }

        .bento-cta-strip p {
            font-size: 0.95rem;
            color: rgba(240, 244, 248, 0.85);
            max-width: 540px;
        }

        .bento-cta-strip .btn-accent {
            flex-shrink: 0;
        }

        @media (min-width: 768px) {
            .hero-bento {
                grid-template-columns: 2fr 1fr;
            }
            .bento-main {
                grid-column: 1 / 2;
                grid-row: 1 / 3;
                padding: 56px 44px;
            }
            .bento-small:nth-of-type(2) {
                grid-column: 2 / 3;
                grid-row: 1 / 2;
            }
            .bento-small:nth-of-type(3) {
                grid-column: 2 / 3;
                grid-row: 2 / 3;
            }
            .bento-cta-strip {
                grid-column: 1 / -1;
            }
        }

        /* Section base */
        .section {
            padding: 56px 0;
            position: relative;
        }

        .section-header {
            margin-bottom: 32px;
            max-width: 760px;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            background: var(--brand-50);
            color: var(--brand-600);
            font-size: 0.78rem;
            font-weight: 650;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(1.5rem, 3.5vw, 2.1rem);
            font-weight: 800;
            color: var(--brand-900);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* Card grid */
        .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }

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

        .card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--brand-800);
            margin-bottom: 8px;
        }

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

        @media (min-width: 640px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .card-grid-3 {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid-4 {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        /* Voucher grid */
        .voucher-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }

        .voucher-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            background: #fff;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .voucher-top {
            padding: 22px 20px;
            background: linear-gradient(135deg, var(--brand-50), #fff);
            border-bottom: 1px dashed var(--border-medium);
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 12px;
        }

        .voucher-name {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--brand-800);
        }

        .voucher-value {
            font-size: 1.7rem;
            font-weight: 850;
            color: var(--accent-600);
            white-space: nowrap;
        }

        .voucher-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .voucher-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            flex: 1;
        }

        .voucher-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 6px;
            background: var(--accent-50);
            color: var(--accent-700);
            font-size: 0.75rem;
            font-weight: 650;
        }

        @media (min-width: 640px) {
            .voucher-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .voucher-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        /* Rules / info list */
        .rules-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .rules-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 18px 20px;
            border-radius: var(--radius-md);
            background: var(--surface-muted);
            border: 1px solid var(--border-light);
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

        .rules-item:hover {
            border-color: var(--brand-300);
            background: var(--brand-50);
        }

        .rules-num {
            width: 30px;
            height: 30px;
            border-radius: 999px;
            background: var(--brand-700);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.88rem;
            flex-shrink: 0;
        }

        .rules-item h4 {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--brand-800);
            margin-bottom: 4px;
        }

        .rules-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* News section */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        .news-main-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
        }

        .news-item {
            padding: 20px 22px;
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition-fast);
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            background: var(--brand-50);
        }

        .news-date {
            font-size: 0.78rem;
            color: var(--accent-600);
            font-weight: 650;
            letter-spacing: 0.02em;
            margin-bottom: 6px;
        }

        .news-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--brand-800);
            margin-bottom: 6px;
            line-height: 1.45;
        }

        .news-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 10px;
        }

        .news-more {
            font-size: 0.85rem;
            font-weight: 650;
            color: var(--brand-600);
            transition: color var(--transition-fast);
            cursor: pointer;
            background: none;
            border: none;
            padding: 0;
        }

        .news-more:hover {
            color: var(--accent-500);
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-sidebar-card {
            background: var(--brand-900);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            color: #fff;
        }

        .news-sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .news-sidebar-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .news-sidebar-card li a {
            font-size: 0.88rem;
            color: rgba(240, 244, 248, 0.82);
            display: block;
            padding: 8px 10px;
            border-radius: 6px;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .news-sidebar-card li a:hover {
            background: rgba(240, 244, 248, 0.1);
            color: #fff;
        }

        @media (min-width: 1024px) {
            .news-layout {
                grid-template-columns: 2fr 1fr;
            }
        }

        /* Matrix / entrance */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        .matrix-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 16px;
            border-radius: var(--radius-md);
            background: #fff;
            border: 1px solid var(--border-light);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            cursor: pointer;
        }

        .matrix-item:hover {
            border-color: var(--brand-400);
            box-shadow: var(--shadow-md);
        }

        .matrix-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--brand-50);
            color: var(--brand-600);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            flex-shrink: 0;
        }

        .matrix-item span {
            font-size: 0.9rem;
            font-weight: 650;
            color: var(--text-secondary);
        }

        @media (min-width: 768px) {
            .matrix-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .matrix-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        /* Campaign section */
        .campaign-block {
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: linear-gradient(135deg, #1a2a42 0%, #2c486e 50%, #3c5e8a 100%);
            padding: 36px 28px;
            color: #fff;
            position: relative;
        }

        .campaign-block::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -80px;
            width: 400px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(245, 163, 78, 0.2), transparent 60%);
            pointer-events: none;
        }

        .campaign-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            background: var(--accent-500);
            color: #fff;
            font-weight: 700;
            font-size: 0.78rem;
            letter-spacing: 0.04em;
            margin-bottom: 14px;
        }

        .campaign-block h2 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 800;
            margin-bottom: 10px;
            color: #fff;
        }

        .campaign-block p {
            font-size: 0.95rem;
            color: rgba(240, 244, 248, 0.85);
            max-width: 560px;
            line-height: 1.75;
            margin-bottom: 20px;
        }

        /* Screenshot stage */
        .stage-wrap {
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: var(--surface-dark);
            padding: 28px 22px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-lg);
        }

        .stage-toolbar {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 18px;
        }

        .stage-dot {
            width: 12px;
            height: 12px;
            border-radius: 999px;
            background: #e74c3c;
        }

        .stage-dot:nth-child(2) {
            background: #f1c40f;
        }

        .stage-dot:nth-child(3) {
            background: #2ecc71;
        }

        .stage-viewport {
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            background: var(--brand-950);
            min-height: 260px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .stage-viewport img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.85;
        }

        .stage-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
            padding: 20px;
        }

        .stage-stat-chip {
            background: rgba(15, 26, 43, 0.75);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            color: #fff;
            text-align: center;
            min-width: 110px;
        }

        .stage-stat-chip strong {
            font-size: 1.4rem;
            font-weight: 800;
            display: block;
        }

        .stage-stat-chip span {
            font-size: 0.75rem;
            color: rgba(240, 244, 248, 0.75);
        }

        /* Focus topics */
        .topics-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .topic-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            background: #fff;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }

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

        .topic-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .topic-card-body {
            padding: 18px 20px;
        }

        .topic-card-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--brand-800);
            margin-bottom: 6px;
        }

        .topic-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (min-width: 640px) {
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .topics-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }

        .testimonial-card {
            border-radius: var(--radius-lg);
            background: #fff;
            border: 1px solid var(--border-light);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .testimonial-stars {
            color: #f5a34e;
            font-size: 1rem;
            letter-spacing: 2px;
        }

        .testimonial-text {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
        }

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

        .testimonial-avatar {
            width: 38px;
            height: 38px;
            border-radius: 999px;
            background: var(--brand-100);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--brand-600);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .testimonial-name {
            font-size: 0.88rem;
            font-weight: 650;
            color: var(--text-primary);
        }

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

        @media (min-width: 768px) {
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .testimonial-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        /* Brand intro */
        .brand-intro-block {
            background: var(--surface-muted);
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            border: 1px solid var(--border-light);
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        .brand-intro-block h2 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--brand-900);
            margin-bottom: 12px;
        }

        .brand-intro-block p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.85;
        }

        @media (min-width: 768px) {
            .brand-intro-block {
                grid-template-columns: 1fr 2fr;
                padding: 44px 38px;
                gap: 40px;
            }
        }

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

        .faq-item {
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            background: #fff;
            overflow: hidden;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--brand-300);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--brand-800);
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--accent-600);
        }

        .faq-toggle-icon {
            width: 26px;
            height: 26px;
            border-radius: 999px;
            background: var(--brand-50);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--brand-600);
            flex-shrink: 0;
            transition: transform var(--transition-fast), background var(--transition-fast);
        }

        .faq-item.open .faq-toggle-icon {
            transform: rotate(45deg);
            background: var(--accent-500);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 260px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, var(--brand-900), var(--brand-950));
            border-radius: var(--radius-xl);
            padding: 48px 30px;
            text-align: center;
            color: #fff;
        }

        .cta-section h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.1rem);
            font-weight: 800;
            margin-bottom: 12px;
            color: #fff;
        }

        .cta-section p {
            font-size: 0.98rem;
            color: rgba(240, 244, 248, 0.82);
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.75;
            margin-bottom: 24px;
        }

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

        /* Footer */
        .site-footer {
            background: var(--brand-950);
            color: rgba(240, 244, 248, 0.82);
            padding: 48px 0 28px;
            border-top: 1px solid rgba(240, 244, 248, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(240, 244, 248, 0.65);
            max-width: 340px;
        }

        .footer-links-group h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-links-group ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links-group a {
            font-size: 0.85rem;
            color: rgba(240, 244, 248, 0.65);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(240, 244, 248, 0.08);
            padding-top: 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 0.8rem;
            color: rgba(240, 244, 248, 0.55);
        }

        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-bottom-links a {
            color: rgba(240, 244, 248, 0.55);
            transition: color var(--transition-fast);
        }

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

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2.5fr 1fr 1fr 1fr;
            }
        }

        /* Utility */
        .bg-surface-muted {
            background: var(--surface-muted);
        }

        .text-muted {
            color: var(--text-muted);
        }

        .transition-base {
            transition: all var(--transition-base);
        }

        .hover-lift {
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

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

        /* Scroll reveal animations */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .reveal {
            animation: fadeUp 0.7s ease-out both;
        }

        .reveal-delay-1 {
            animation-delay: 0.1s;
        }
        .reveal-delay-2 {
            animation-delay: 0.2s;
        }
        .reveal-delay-3 {
            animation-delay: 0.3s;
        }

/* roulang page: category2 */
:root {
            --brand-50: #f0f4f8;
            --brand-100: #dbe4ed;
            --brand-200: #bccadd;
            --brand-300: #91a9c4;
            --brand-400: #5f7ea6;
            --brand-500: #3c5e8a;
            --brand-600: #2c486e;
            --brand-700: #223a58;
            --brand-800: #16273d;
            --brand-900: #0f1a2b;
            --brand-950: #0a1220;
            --accent-50: #fef3e6;
            --accent-100: #fde3c8;
            --accent-200: #fac790;
            --accent-300: #f5a34e;
            --accent-400: #ef8618;
            --accent-500: #d96f0e;
            --accent-600: #b3550b;
            --accent-700: #8f410d;
            --accent-800: #6e330e;
            --accent-900: #562a0d;
            --surface: #ffffff;
            --surface-muted: #f7f9fc;
            --surface-dark: #0f1a2b;
            --text-primary: #0f1a2b;
            --text-secondary: #3d4c62;
            --text-muted: #6b7a93;
            --text-inverse: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(15, 26, 43, 0.06), 0 1px 2px rgba(15, 26, 43, 0.04);
            --shadow-md: 0 6px 18px rgba(15, 26, 43, 0.08), 0 2px 6px rgba(15, 26, 43, 0.04);
            --shadow-lg: 0 18px 40px rgba(15, 26, 43, 0.12), 0 6px 16px rgba(15, 26, 43, 0.06);
            --shadow-xl: 0 28px 60px rgba(15, 26, 43, 0.16), 0 10px 24px rgba(15, 26, 43, 0.08);
            --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 420ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--accent-500);
        }

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(239, 134, 24, 0.45);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 68px;
            padding-top: 10px;
            padding-bottom: 10px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--brand-800);
            white-space: nowrap;
        }

        .nav-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }

        .nav-links {
            display: none;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--brand-700);
            background: var(--brand-50);
        }

        .nav-link.active {
            color: var(--accent-600);
            background: var(--accent-50);
            font-weight: 700;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            background: var(--brand-700);
            color: #fff;
            font-size: 0.875rem;
            font-weight: 700;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }

        .nav-cta:hover {
            background: var(--brand-800);
            color: #fff;
            box-shadow: var(--shadow-md);
        }

        .mobile-menu-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
            font-size: 1.2rem;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .mobile-menu-btn:hover {
            background: var(--brand-50);
            color: var(--brand-700);
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: 12px 0 16px;
            border-top: 1px solid var(--border-light);
            gap: 4px;
        }

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

        .mobile-nav .nav-link {
            display: flex;
            width: 100%;
            padding: 10px 12px;
            font-size: 0.95rem;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background: linear-gradient(165deg, #0f1a2b 0%, #16273d 45%, #1d3557 100%);
            overflow: hidden;
            padding: 64px 0 80px;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(239, 134, 24, 0.15) 0%, transparent 60%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: var(--accent-300);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            backdrop-filter: blur(8px);
        }

        .hero-title {
            font-size: 2.2rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: #fff;
            margin-top: 16px;
        }

        .hero-subtitle {
            font-size: 1.05rem;
            line-height: 1.8;
            color: rgba(240, 244, 248, 0.85);
            margin-top: 16px;
            max-width: 620px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 28px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            background: var(--accent-500);
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-md);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent-600);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.25);
            cursor: pointer;
            transition: all var(--transition-base);
            backdrop-filter: blur(8px);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }

        .hero-panel {
            position: relative;
            z-index: 2;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-xl);
            padding: 28px;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-xl);
        }

        .group-info {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        .group-count {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .group-avatars {
            display: flex;
            align-items: center;
        }

        .group-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-400), var(--accent-400));
            border: 2px solid rgba(255, 255, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: #fff;
            margin-right: -8px;
        }

        .group-avatar:last-child {
            margin-right: 0;
        }

        .group-text {
            font-size: 0.875rem;
            color: rgba(240, 244, 248, 0.9);
            font-weight: 600;
        }

        .group-progress {
            margin-top: 14px;
            height: 6px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.14);
            overflow: hidden;
        }

        .group-progress-bar {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--accent-400), var(--accent-500));
            width: 70%;
            transition: width var(--transition-slow);
        }

        .group-meta {
            display: flex;
            justify-content: space-between;
            margin-top: 12px;
            font-size: 0.8rem;
            color: rgba(240, 244, 248, 0.7);
        }

        /* Section Base */
        .section {
            padding: 72px 0;
        }

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

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

        .section-header {
            max-width: 720px;
            margin-bottom: 44px;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-600);
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent-500);
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            margin-top: 10px;
        }

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

        .section-desc {
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text-muted);
            margin-top: 12px;
        }

        .section-dark .section-desc {
            color: rgba(240, 244, 248, 0.75);
        }

        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

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

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--brand-50);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--brand-600);
            margin-bottom: 16px;
        }

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

        .card-text {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        /* Stat Grid */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.22);
        }

        .stat-number {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--accent-400);
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 0.82rem;
            color: rgba(240, 244, 248, 0.7);
            margin-top: 4px;
        }

        /* List */
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        .feature-list li:last-child {
            border-bottom: none;
        }

        .feature-list i {
            color: var(--accent-500);
            font-size: 0.9rem;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: var(--border-medium);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 22px;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-primary);
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question i {
            color: var(--accent-500);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

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

        .faq-answer {
            display: none;
            padding: 0 22px 18px;
            font-size: 0.9rem;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(140deg, var(--brand-800), var(--brand-950));
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 50% 50%, rgba(239, 134, 24, 0.18) 0%, transparent 60%);
            z-index: 0;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-title {
            font-size: 1.9rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .cta-desc {
            color: rgba(240, 244, 248, 0.8);
            margin-top: 14px;
            font-size: 1rem;
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background: var(--surface-dark);
            color: var(--text-inverse);
            padding: 52px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
        }

        .footer-brand-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(240, 244, 248, 0.68);
            margin-top: 10px;
            max-width: 320px;
        }

        .footer-links-group h4 {
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--accent-400);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

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

        .footer-links-group li {
            margin-bottom: 8px;
        }

        .footer-links-group a {
            font-size: 0.88rem;
            color: rgba(240, 244, 248, 0.7);
            transition: color var(--transition-fast);
        }

        .footer-links-group a:hover {
            color: var(--accent-400);
        }

        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.8rem;
            color: rgba(240, 244, 248, 0.5);
        }

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

        .footer-bottom-links a {
            color: rgba(240, 244, 248, 0.65);
        }

        .footer-bottom-links a:hover {
            color: var(--accent-400);
        }

        /* Responsive */
        @media (min-width: 640px) {
            .hero-title {
                font-size: 2.6rem;
            }

            .section-title {
                font-size: 2rem;
            }

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

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

            .cta-title {
                font-size: 2.2rem;
            }
        }

        @media (min-width: 768px) {
            .nav-links {
                display: flex;
            }

            .mobile-menu-btn {
                display: none;
            }

            .mobile-nav {
                display: none !important;
            }

            .hero-content {
                grid-template-columns: 1.2fr 1fr;
                gap: 50px;
            }

            .hero-title {
                font-size: 3rem;
            }

            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr 1fr;
            }

            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
                max-width: 1360px;
            }

            .hero-title {
                font-size: 3.4rem;
            }

            .section {
                padding: 88px 0;
            }

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

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

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.8rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

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

            .btn-primary,
            .btn-secondary {
                width: 100%;
            }

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

            .nav-container {
                flex-wrap: wrap;
            }
        }

/* roulang page: category1 */
:root {
            --brand-50: #f0f4f8;
            --brand-100: #dbe4ed;
            --brand-200: #bccadd;
            --brand-300: #91a9c4;
            --brand-400: #5f7ea6;
            --brand-500: #3c5e8a;
            --brand-600: #2c486e;
            --brand-700: #223a58;
            --brand-800: #16273d;
            --brand-900: #0f1a2b;
            --brand-950: #0a1220;
            --accent-50: #fef3e6;
            --accent-100: #fde3c8;
            --accent-200: #fac790;
            --accent-300: #f5a34e;
            --accent-400: #ef8618;
            --accent-500: #d96f0e;
            --accent-600: #b3550b;
            --accent-700: #8f410d;
            --accent-800: #6e330e;
            --accent-900: #562a0d;
            --surface: #ffffff;
            --surface-muted: #f7f9fc;
            --surface-dark: #0f1a2b;
            --text-primary: #0f1a2b;
            --text-secondary: #3d4c62;
            --text-muted: #6b7a93;
            --text-inverse: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(15, 26, 43, 0.06), 0 1px 2px rgba(15, 26, 43, 0.04);
            --shadow-md: 0 6px 18px rgba(15, 26, 43, 0.08), 0 2px 6px rgba(15, 26, 43, 0.04);
            --shadow-lg: 0 18px 40px rgba(15, 26, 43, 0.12), 0 6px 16px rgba(15, 26, 43, 0.06);
            --shadow-xl: 0 28px 60px rgba(15, 26, 43, 0.16), 0 10px 24px rgba(15, 26, 43, 0.08);
            --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 420ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-500);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(239, 134, 24, 0.45);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        .container {
            width: 100%;
            max-width: 1360px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 40px;
            padding-right: 40px;
        }

        @media (max-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 68px;
            padding-top: 10px;
            padding-bottom: 10px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--brand-800);
            white-space: nowrap;
        }
        .nav-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }
        .nav-links {
            display: none;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .nav-link:hover {
            background: var(--brand-50);
            color: var(--brand-700);
        }
        .nav-link.active {
            background: var(--brand-700);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .nav-search {
            display: none;
            align-items: center;
            gap: 8px;
            background: var(--surface-muted);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 8px 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
            cursor: pointer;
            transition: border-color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .nav-search:hover {
            border-color: var(--brand-300);
            background: var(--brand-50);
        }
        .nav-cta {
            display: none;
            align-items: center;
            gap: 8px;
            background: var(--accent-500);
            color: #fff;
            border: none;
            padding: 10px 20px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            white-space: nowrap;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        .nav-cta:hover {
            background: var(--accent-600);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .mobile-menu-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--surface-muted);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            cursor: pointer;
            font-size: 1.2rem;
            color: var(--text-secondary);
            transition: background var(--transition-fast);
        }
        .mobile-menu-btn:hover {
            background: var(--brand-50);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 6px;
            padding: 12px 20px 20px;
            border-top: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.98);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            width: 100%;
            justify-content: flex-start;
            padding: 10px 14px;
        }

        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
            }
            .nav-search {
                display: flex;
            }
            .nav-cta {
                display: inline-flex;
            }
            .mobile-menu-btn {
                display: none;
            }
            .mobile-menu {
                display: none;
            }
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: var(--accent-500);
            color: #fff;
            border: none;
            padding: 14px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            box-shadow: var(--shadow-sm);
            text-decoration: none;
        }
        .btn-primary:hover {
            background: var(--accent-600);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: #fff;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: #fff;
            color: var(--brand-700);
            border: 1px solid var(--brand-200);
            padding: 14px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: border-color var(--transition-base), background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            text-decoration: none;
        }
        .btn-secondary:hover {
            border-color: var(--brand-400);
            background: var(--brand-50);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            color: var(--brand-700);
        }
        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 14px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
            backdrop-filter: blur(8px);
        }
        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        /* Badges & Tags */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            background: var(--brand-50);
            color: var(--brand-700);
            border: 1px solid var(--brand-100);
        }
        .badge-accent {
            background: var(--accent-50);
            color: var(--accent-700);
            border-color: var(--accent-100);
        }
        .badge-white {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(8px);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--surface-muted);
            color: var(--text-muted);
            border: 1px solid var(--border-light);
        }

        /* Cards */
        .data-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .data-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--brand-200);
        }

        /* Countdown */
        .countdown-item {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            text-align: center;
            backdrop-filter: blur(8px);
            min-width: 68px;
        }
        .countdown-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .countdown-item .label {
            font-size: 0.72rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 2px;
        }

        /* Section titles */
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-eyebrow {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-600);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 720px;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow var(--transition-base);
            background: #fff;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-primary);
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--brand-50);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--accent-500);
        }
        .faq-icon {
            transition: transform var(--transition-base), color var(--transition-base);
            font-size: 1.1rem;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--brand-950);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .footer-brand-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
        }
        .footer-links-group h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .footer-links-group ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links-group a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-links-group a:hover {
            color: var(--accent-400);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom p {
            margin: 0 0 4px;
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--accent-400);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* Responsive section title */
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.7rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
        }

        /* Custom page-specific styles */
        .hero-overlay {
            background: linear-gradient(135deg, rgba(15, 26, 43, 0.92) 0%, rgba(22, 39, 61, 0.86) 40%, rgba(61, 94, 138, 0.68) 100%);
        }
        .pain-item {
            border-left: 3px solid var(--accent-400);
            padding-left: 16px;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .pain-item:hover {
            border-color: var(--accent-500);
            background: var(--accent-50);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }
        .asymmetric-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 24px;
        }
        .asymmetric-grid-reverse {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 24px;
        }
        @media (max-width: 768px) {
            .asymmetric-grid,
            .asymmetric-grid-reverse {
                grid-template-columns: 1fr;
            }
        }
        .stat-block {
            background: var(--surface-dark);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            color: #fff;
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.1;
            color: var(--accent-400);
        }
        .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }
        .step-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--brand-700);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .league-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            background: var(--surface-muted);
            border: 1px solid var(--border-light);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: background var(--transition-fast), border-color var(--transition-fast);
        }
        .league-item:hover {
            background: var(--brand-50);
            border-color: var(--brand-200);
        }
        .league-item i {
            color: var(--accent-500);
            width: 18px;
            text-align: center;
        }

/* roulang page: category3 */
:root {
            --brand-50: #f0f4f8;
            --brand-100: #dbe4ed;
            --brand-200: #bccadd;
            --brand-300: #91a9c4;
            --brand-400: #5f7ea6;
            --brand-500: #3c5e8a;
            --brand-600: #2c486e;
            --brand-700: #223a58;
            --brand-800: #16273d;
            --brand-900: #0f1a2b;
            --brand-950: #0a1220;
            --accent-50: #fef3e6;
            --accent-100: #fde3c8;
            --accent-200: #fac790;
            --accent-300: #f5a34e;
            --accent-400: #ef8618;
            --accent-500: #d96f0e;
            --accent-600: #b3550b;
            --accent-700: #8f410d;
            --accent-800: #6e330e;
            --accent-900: #562a0d;
            --surface: #ffffff;
            --surface-muted: #f7f9fc;
            --surface-dark: #0f1a2b;
            --text-primary: #0f1a2b;
            --text-secondary: #3d4c62;
            --text-muted: #6b7a93;
            --text-inverse: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(15, 26, 43, 0.06), 0 1px 2px rgba(15, 26, 43, 0.04);
            --shadow-md: 0 6px 18px rgba(15, 26, 43, 0.08), 0 2px 6px rgba(15, 26, 43, 0.04);
            --shadow-lg: 0 18px 40px rgba(15, 26, 43, 0.12), 0 6px 16px rgba(15, 26, 43, 0.06);
            --shadow-xl: 0 28px 60px rgba(15, 26, 43, 0.16), 0 10px 24px rgba(15, 26, 43, 0.08);
            --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 420ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-500);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(239, 134, 24, 0.45);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
                max-width: 1360px;
            }
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 68px;
            padding-top: 10px;
            padding-bottom: 10px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--brand-800);
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .nav-logo:hover {
            color: var(--accent-500);
        }
        .nav-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }
        .nav-links {
            display: none;
            align-items: center;
            gap: 2px;
            flex-wrap: wrap;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-link:hover {
            color: var(--brand-700);
            background: var(--brand-50);
        }
        .nav-link.active {
            color: var(--brand-800);
            background: var(--brand-100);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--accent-500);
            border-radius: 2px;
        }
        .nav-cta {
            display: none;
            align-items: center;
            gap: 8px;
            padding: 9px 18px;
            background: var(--brand-800);
            color: #fff;
            border-radius: 10px;
            font-size: 0.9rem;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }
        .nav-cta:hover {
            background: var(--brand-700);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .nav-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border-light);
            background: var(--surface);
            color: var(--text-primary);
            cursor: pointer;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-toggle:hover {
            background: var(--brand-50);
            border-color: var(--brand-200);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 16px 20px 20px;
            background: rgba(255, 255, 255, 0.97);
            border-top: 1px solid var(--border-light);
            box-shadow: var(--shadow-lg);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            padding: 12px 14px;
            font-size: 1rem;
            width: 100%;
            border-radius: 8px;
        }
        @media (min-width: 1024px) {
            .nav-toggle {
                display: none;
            }
            .nav-links {
                display: flex;
            }
            .nav-cta {
                display: inline-flex;
            }
            .mobile-menu {
                display: none !important;
            }
        }
        @media (max-width: 1023px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
        }
        .page-hero {
            position: relative;
            background: var(--surface);
            overflow: hidden;
            padding: 48px 0 64px;
        }
        @media (min-width: 768px) {
            .page-hero {
                padding: 64px 0 80px;
            }
        }
        @media (min-width: 1024px) {
            .page-hero {
                padding: 72px 0 96px;
            }
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .hero-grid {
                grid-template-columns: 5fr 7fr;
                gap: 48px;
            }
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: var(--brand-50);
            color: var(--brand-700);
            font-size: 0.82rem;
            font-weight: 600;
            border-radius: 999px;
            border: 1px solid var(--brand-100);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .hero-badge-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-500);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.4);
            }
        }
        .hero-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--brand-900);
            margin-bottom: 16px;
        }
        @media (min-width: 640px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        @media (min-width: 1024px) {
            .hero-title {
                font-size: 3rem;
            }
        }
        .hero-desc {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            background: var(--brand-800);
            color: #fff;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-md);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--brand-700);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 24px;
            background: var(--surface);
            color: var(--brand-800);
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            border: 1px solid var(--border-medium);
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: var(--brand-50);
            border-color: var(--brand-300);
            color: var(--brand-700);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .hero-kpi {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .hero-kpi-item {
            text-align: left;
        }
        .hero-kpi-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--brand-800);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .hero-kpi-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .hero-image-wrap {
            position: relative;
            z-index: 1;
        }
        .hero-image-inner {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            clip-path: polygon(3% 0%, 100% 2%, 97% 98%, 0% 100%);
            transition: clip-path var(--transition-slow);
        }
        .hero-image-inner:hover {
            clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%);
        }
        .hero-image-inner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 5 / 3;
            transition: transform var(--transition-slow);
        }
        .hero-image-inner:hover img {
            transform: scale(1.03);
        }
        .hero-image-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 43, 0.4) 0%, rgba(15, 26, 43, 0.1) 60%, transparent 100%);
            pointer-events: none;
        }
        .section {
            padding: 48px 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 64px 0;
            }
        }
        @media (min-width: 1024px) {
            .section {
                padding: 80px 0;
            }
        }
        .section-muted {
            background: var(--surface-muted);
        }
        .section-dark {
            background: var(--surface-dark);
            color: var(--text-inverse);
        }
        .section-dark .section-title {
            color: var(--text-inverse);
        }
        .section-dark .section-desc {
            color: rgba(240, 244, 248, 0.75);
        }
        .section-dark .text-muted {
            color: rgba(240, 244, 248, 0.6);
        }
        .section-title {
            font-size: 1.7rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--brand-900);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.1rem;
            }
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 2.4rem;
            }
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 32px;
        }
        .section-header {
            margin-bottom: 36px;
        }
        @media (min-width: 768px) {
            .section-header {
                margin-bottom: 48px;
            }
        }
        .pain-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .pain-card:hover {
            border-color: var(--brand-200);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .pain-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--brand-50);
            color: var(--brand-700);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .pain-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--brand-900);
            margin-bottom: 8px;
        }
        .pain-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .solution-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .solution-grid {
                grid-template-columns: 1fr 1fr;
                gap: 56px;
            }
        }
        .solution-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .solution-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .feature-list li::before {
            content: '';
            flex-shrink: 0;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent-500);
            margin-top: 7px;
        }
        .feature-list li strong {
            color: var(--brand-900);
            font-weight: 600;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        @media (min-width: 768px) {
            .stat-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 28px;
            }
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }
        .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.85rem;
            color: rgba(240, 244, 248, 0.65);
            margin-top: 6px;
        }
        .process-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 768px) {
            .process-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
        }
        .process-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
            position: relative;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .process-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--brand-200);
        }
        .process-step {
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-600);
            margin-bottom: 10px;
        }
        .process-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--brand-900);
            margin-bottom: 8px;
        }
        .process-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 768px) {
            .testimonial-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
        }
        .testimonial-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--brand-100);
        }
        .testimonial-quote {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
            font-style: italic;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--brand-800);
        }
        .testimonial-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--brand-100);
            color: var(--brand-700);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--brand-200);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--brand-900);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            user-select: none;
            transition: color var(--transition-fast);
        }
        .faq-item summary:hover {
            color: var(--accent-600);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--brand-50);
            color: var(--brand-700);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            font-weight: 500;
        }
        .faq-item[open] .faq-icon {
            background: var(--accent-500);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--brand-800) 0%, var(--brand-950) 100%);
            border-radius: var(--radius-xl);
            padding: 40px 28px;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }
        @media (min-width: 768px) {
            .cta-box {
                padding: 56px 48px;
            }
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(239, 134, 24, 0.12);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 1.7rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 768px) {
            .cta-box h2 {
                font-size: 2.1rem;
            }
        }
        .cta-box p {
            color: rgba(240, 244, 248, 0.75);
            line-height: 1.8;
            max-width: 560px;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .cta-box .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: var(--accent-500);
            color: #fff;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 14px rgba(239, 134, 24, 0.35);
        }
        .cta-box .btn-cta:hover {
            background: var(--accent-400);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(239, 134, 24, 0.45);
        }
        .site-footer {
            background: var(--brand-950);
            color: rgba(240, 244, 248, 0.75);
            padding: 48px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 40px;
            }
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }
        .footer-brand-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(240, 244, 248, 0.6);
            max-width: 320px;
        }
        .footer-links-group h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-links-group ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links-group a {
            font-size: 0.88rem;
            color: rgba(240, 244, 248, 0.6);
            transition: color var(--transition-fast);
        }
        .footer-links-group a:hover {
            color: var(--accent-400);
        }
        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 12px;
            padding-top: 24px;
            font-size: 0.8rem;
            color: rgba(240, 244, 248, 0.5);
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                align-items: center;
                justify-content: space-between;
            }
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-bottom-links a {
            color: rgba(240, 244, 248, 0.5);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--accent-400);
        }
        @media (max-width: 640px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-kpi {
                gap: 16px;
            }
            .hero-kpi-value {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-value {
                font-size: 1.5rem;
            }
            .footer-grid {
                gap: 24px;
            }
        }

/* roulang page: category4 */
:root {
            --brand-50: #f0f4f8;
            --brand-100: #dbe4ed;
            --brand-200: #bccadd;
            --brand-300: #91a9c4;
            --brand-400: #5f7ea6;
            --brand-500: #3c5e8a;
            --brand-600: #2c486e;
            --brand-700: #223a58;
            --brand-800: #16273d;
            --brand-900: #0f1a2b;
            --brand-950: #0a1220;
            --accent-50: #fef3e6;
            --accent-100: #fde3c8;
            --accent-200: #fac790;
            --accent-300: #f5a34e;
            --accent-400: #ef8618;
            --accent-500: #d96f0e;
            --accent-600: #b3550b;
            --accent-700: #8f410d;
            --accent-800: #6e330e;
            --accent-900: #562a0d;
            --surface: #ffffff;
            --surface-muted: #f7f9fc;
            --surface-dark: #0f1a2b;
            --text-primary: #0f1a2b;
            --text-secondary: #3d4c62;
            --text-muted: #6b7a93;
            --text-inverse: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(15, 26, 43, 0.06), 0 1px 2px rgba(15, 26, 43, 0.04);
            --shadow-md: 0 6px 18px rgba(15, 26, 43, 0.08), 0 2px 6px rgba(15, 26, 43, 0.04);
            --shadow-lg: 0 18px 40px rgba(15, 26, 43, 0.12), 0 6px 16px rgba(15, 26, 43, 0.06);
            --shadow-xl: 0 28px 60px rgba(15, 26, 43, 0.16), 0 10px 24px rgba(15, 26, 43, 0.08);
            --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 420ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-500);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
            outline: 3px solid rgba(239, 134, 24, 0.45);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        .container {
            width: 100%;
            max-width: 1360px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 40px;
            padding-right: 40px;
        }
        @media (max-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 68px;
            padding-top: 10px;
            padding-bottom: 10px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--brand-800);
            white-space: nowrap;
        }
        .nav-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }
        .nav-links {
            display: none;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--accent-600);
            background: var(--accent-50);
        }
        .nav-link.active {
            color: #fff;
            background: var(--brand-700);
            box-shadow: var(--shadow-sm);
        }
        .nav-menu-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            background: var(--surface);
            color: var(--text-primary);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .nav-menu-toggle:hover {
            border-color: var(--accent-400);
            color: var(--accent-600);
        }
        .nav-menu-toggle:focus-visible {
            outline: 3px solid rgba(239, 134, 24, 0.45);
            outline-offset: 2px;
        }
        .mobile-nav {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border-light);
            padding: 16px 20px;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            display: flex;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
        }
        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
            }
            .nav-menu-toggle {
                display: none;
            }
            .mobile-nav {
                display: none !important;
            }
        }
        @media (max-width: 1023px) {
            .nav-links {
                display: none;
            }
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition-base);
            border: none;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent-400), var(--accent-600));
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        .btn-accent:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--brand-700);
            border: 1.5px solid var(--brand-300);
        }
        .btn-outline:hover {
            border-color: var(--accent-400);
            color: var(--accent-600);
            background: var(--accent-50);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 1.05rem;
        }

        /* Badge */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            text-transform: uppercase;
        }
        .badge-accent {
            background: var(--accent-100);
            color: var(--accent-700);
        }
        .badge-brand {
            background: var(--brand-100);
            color: var(--brand-700);
        }
        .badge-dark {
            background: var(--brand-800);
            color: var(--text-inverse);
        }

        /* Cards */
        .card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--border-medium);
        }
        .card-body {
            padding: 24px;
        }
        .card-title {
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }
        .card-text {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.8;
        }

        /* Tags / Chips */
        .chip {
            display: inline-flex;
            align-items: center;
            padding: 5px 12px;
            border-radius: 999px;
            background: var(--surface-muted);
            color: var(--text-secondary);
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .chip:hover {
            border-color: var(--accent-300);
            color: var(--accent-600);
            background: var(--accent-50);
        }

        /* Stats */
        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            color: var(--brand-700);
            line-height: 1.2;
        }
        .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* Sections */
        .section {
            padding-top: 72px;
            padding-bottom: 72px;
        }
        .section-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }
        .section-dark {
            background: var(--surface-dark);
            color: var(--text-inverse);
        }
        .section-muted {
            background: var(--surface-muted);
        }

        /* Hero */
        .hero {
            position: relative;
            background: linear-gradient(160deg, var(--brand-950) 0%, var(--brand-800) 45%, var(--brand-700) 100%);
            color: var(--text-inverse);
            min-height: 620px;
            display: flex;
            align-items: center;
            overflow: hidden;
            border-bottom: 4px solid var(--accent-500);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(239, 134, 24, 0.18) 0%, transparent 55%),
                radial-gradient(ellipse at 20% 80%, rgba(91, 126, 166, 0.3) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }
        .hero-title {
            font-size: 2.6rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(240, 244, 248, 0.8);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 540px;
        }
        .hero-form {
            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(12px);
            -webkit-backdrop-filter: blur(12px);
            max-width: 480px;
        }
        .hero-form label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: rgba(240, 244, 248, 0.9);
        }
        .hero-form input {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 16px;
            transition: all var(--transition-fast);
        }
        .hero-form input::placeholder {
            color: rgba(240, 244, 248, 0.5);
        }
        .hero-form input:focus {
            outline: none;
            border-color: var(--accent-400);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 4px rgba(239, 134, 24, 0.2);
        }
        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-visual img {
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-xl);
            border: 1px solid rgba(255, 255, 255, 0.2);
            max-height: 420px;
            object-fit: cover;
            width: 100%;
        }

        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero {
                min-height: auto;
                padding-top: 64px;
                padding-bottom: 64px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-form {
                padding: 20px;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
        }

        /* Section titles */
        .section-title {
            font-size: 2rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.35;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .section-lead {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 640px;
        }
        .section-title-dark {
            color: var(--text-inverse);
        }
        .section-lead-dark {
            color: rgba(240, 244, 248, 0.7);
        }

        /* Flow Section (叙事转化流) */
        .flow-step {
            display: flex;
            gap: 20px;
            padding: 24px;
            border-left: 3px solid var(--accent-400);
            background: var(--surface);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            transition: all var(--transition-base);
        }
        .flow-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .flow-step-num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-500);
            line-height: 1;
            flex-shrink: 0;
        }
        .flow-step-content h4 {
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .flow-step-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.75;
        }

        /* Method Section */
        .method-block {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: all var(--transition-base);
        }
        .method-block:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-300);
        }
        .method-block h4 {
            font-weight: 800;
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--brand-800);
        }
        .method-block p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.8;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 20px 0;
            transition: all var(--transition-fast);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent-600);
        }
        .faq-question i {
            color: var(--text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
            margin-top: 4px;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--accent-500);
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
            padding-top: 12px;
        }

        /* Testimonial */
        .testimonial-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .testimonial-quote {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-400), var(--accent-400));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .testimonial-name {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-primary);
        }
        .testimonial-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Deep Content */
        .deep-content {
            max-width: 800px;
        }
        .deep-content h3 {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--brand-800);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .deep-content p {
            color: var(--text-secondary);
            font-size: 0.98rem;
            line-height: 2;
            margin-bottom: 16px;
        }
        .deep-content blockquote {
            border-left: 4px solid var(--accent-400);
            padding: 16px 20px;
            background: var(--accent-50);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--brand-800), var(--brand-950));
            color: var(--text-inverse);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            box-shadow: var(--shadow-xl);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 0%, rgba(239, 134, 24, 0.25) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-section > * {
            position: relative;
            z-index: 2;
        }
        .cta-title {
            font-size: 1.8rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .cta-text {
            font-size: 1rem;
            color: rgba(240, 244, 248, 0.75);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background: var(--brand-950);
            color: var(--text-inverse);
            padding-top: 64px;
            padding-bottom: 32px;
            border-top: 3px solid var(--accent-600);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            font-weight: 900;
            font-size: 1.4rem;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }
        .footer-brand-desc {
            color: rgba(240, 244, 248, 0.65);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-links-group h4 {
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            color: rgba(240, 244, 248, 0.5);
            margin-bottom: 16px;
        }
        .footer-links-group ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links-group li {
            margin-bottom: 10px;
        }
        .footer-links-group a {
            color: rgba(240, 244, 248, 0.8);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-links-group a:hover {
            color: var(--accent-300);
        }
        .footer-bottom {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.82rem;
            color: rgba(240, 244, 248, 0.55);
        }
        .footer-bottom-links {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .footer-bottom-links a {
            color: rgba(240, 244, 248, 0.65);
        }
        .footer-bottom-links a:hover {
            color: var(--accent-300);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }

        /* Responsive grid helpers */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .grid-asymmetric {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr;
            gap: 24px;
        }
        .grid-asymmetric-reverse {
            display: grid;
            grid-template-columns: 0.8fr 1.4fr;
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-3, .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .grid-asymmetric, .grid-asymmetric-reverse {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .grid-2, .grid-3, .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* Misc */
        .text-accent {
            color: var(--accent-500);
        }
        .text-brand {
            color: var(--brand-600);
        }
        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }
        .gap-16 { gap: 16px; }
        .gap-24 { gap: 24px; }
        .gap-32 { gap: 32px; }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .divider {
            height: 1px;
            background: var(--border-light);
            margin: 32px 0;
        }

/* roulang page: category6 */
:root {
            --brand-50: #f0f4f8;
            --brand-100: #dbe4ed;
            --brand-200: #bccadd;
            --brand-300: #91a9c4;
            --brand-400: #5f7ea6;
            --brand-500: #3c5e8a;
            --brand-600: #2c486e;
            --brand-700: #223a58;
            --brand-800: #16273d;
            --brand-900: #0f1a2b;
            --brand-950: #0a1220;
            --accent-50: #fef3e6;
            --accent-100: #fde3c8;
            --accent-200: #fac790;
            --accent-300: #f5a34e;
            --accent-400: #ef8618;
            --accent-500: #d96f0e;
            --accent-600: #b3550b;
            --accent-700: #8f410d;
            --accent-800: #6e330e;
            --accent-900: #562a0d;
            --surface: #ffffff;
            --surface-muted: #f7f9fc;
            --surface-dark: #0f1a2b;
            --text-primary: #0f1a2b;
            --text-secondary: #3d4c62;
            --text-muted: #6b7a93;
            --text-inverse: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(15, 26, 43, 0.06), 0 1px 2px rgba(15, 26, 43, 0.04);
            --shadow-md: 0 6px 18px rgba(15, 26, 43, 0.08), 0 2px 6px rgba(15, 26, 43, 0.04);
            --shadow-lg: 0 18px 40px rgba(15, 26, 43, 0.12), 0 6px 16px rgba(15, 26, 43, 0.06);
            --shadow-xl: 0 28px 60px rgba(15, 26, 43, 0.16), 0 10px 24px rgba(15, 26, 43, 0.08);
            --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 420ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-500);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
            outline: 3px solid rgba(239, 134, 24, 0.45);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }
        @media (min-width: 1280px) {
            .container {
                max-width: 1360px;
            }
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 68px;
            padding-top: 10px;
            padding-bottom: 10px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--brand-800);
            white-space: nowrap;
        }
        .nav-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }
        .nav-links {
            display: none;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 10px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            position: relative;
            transition: color var(--transition-fast), background var(--transition-fast);
        }
        .nav-link:hover {
            color: var(--brand-700);
            background: var(--brand-50);
        }
        .nav-link.active {
            color: var(--brand-700);
            background: var(--brand-100);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent-500);
        }
        .nav-cta {
            display: none;
            padding: 9px 18px;
            border-radius: 10px;
            background: var(--brand-700);
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            white-space: nowrap;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        .nav-cta:hover {
            background: var(--brand-600);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .mobile-menu-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border-light);
            background: var(--surface);
            color: var(--text-primary);
            cursor: pointer;
            transition: background var(--transition-fast), border-color var(--transition-fast);
        }
        .mobile-menu-btn:hover {
            background: var(--brand-50);
            border-color: var(--brand-200);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 16px 20px;
            background: var(--surface);
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-nav-link {
            display: block;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .mobile-nav-link:hover {
            background: var(--brand-50);
            color: var(--brand-700);
        }
        .mobile-nav-link.active {
            background: var(--brand-100);
            color: var(--brand-700);
            font-weight: 600;
        }
        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
            }
            .nav-cta {
                display: inline-flex;
            }
            .mobile-menu-btn {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }
        .site-footer {
            background: var(--surface-dark);
            color: var(--text-inverse);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.5fr repeat(3, 1fr);
                gap: 40px;
            }
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand-desc {
            font-size: 0.9rem;
            color: rgba(240, 244, 248, 0.7);
            max-width: 420px;
            line-height: 1.7;
        }
        .footer-links-group h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-links-group ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links-group a {
            font-size: 0.88rem;
            color: rgba(240, 244, 248, 0.65);
            transition: color var(--transition-fast);
        }
        .footer-links-group a:hover {
            color: var(--accent-400);
        }
        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 16px;
            padding-top: 24px;
            font-size: 0.82rem;
            color: rgba(240, 244, 248, 0.55);
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-bottom-links a {
            color: rgba(240, 244, 248, 0.65);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--accent-400);
        }
        .footer-bottom-links span {
            color: rgba(240, 244, 248, 0.3);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: var(--accent-50);
            color: var(--accent-600);
            border: 1px solid var(--accent-100);
            white-space: nowrap;
        }
        .badge-blue {
            background: var(--brand-50);
            color: var(--brand-700);
            border-color: var(--brand-100);
        }
        .badge-dark {
            background: rgba(255,255,255,0.1);
            color: rgba(255,255,255,0.85);
            border-color: rgba(255,255,255,0.2);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 12px;
            background: var(--brand-700);
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        .btn-primary:hover {
            background: var(--brand-600);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 12px;
            background: var(--accent-500);
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        .btn-accent:hover {
            background: var(--accent-600);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: 12px;
            background: transparent;
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            border: 1px solid rgba(255,255,255,0.35);
            cursor: pointer;
            transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.1);
            border-color: rgba(255,255,255,0.6);
            color: #fff;
            transform: translateY(-2px);
        }
        .card-hover {
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .data-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            background: var(--surface);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.88rem;
            min-width: 720px;
        }
        .data-table thead {
            background: var(--brand-900);
            color: #fff;
        }
        .data-table th {
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
            font-size: 0.82rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            white-space: nowrap;
        }
        .data-table tbody tr {
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition-fast);
        }
        .data-table tbody tr:hover {
            background: var(--brand-50);
        }
        .data-table tbody tr:last-child {
            border-bottom: none;
        }
        .data-table td {
            padding: 14px 18px;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .data-table .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.82rem;
            background: var(--brand-100);
            color: var(--brand-700);
        }
        .data-table .rank-badge.top {
            background: var(--accent-500);
            color: #fff;
        }
        .data-table .rank-badge.highlight {
            background: var(--brand-700);
            color: #fff;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            line-height: 1.25;
            margin-bottom: 12px;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.5rem;
            }
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
        }
        .stat-block {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 18px 20px;
            border-radius: var(--radius-md);
            background: var(--surface);
            border: 1px solid var(--border-light);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .stat-block:hover {
            border-color: var(--brand-200);
            box-shadow: var(--shadow-sm);
        }
        .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--brand-700);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            background: var(--surface);
            overflow: hidden;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--brand-200);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
        }
        .faq-answer {
            padding: 0 22px 18px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.75;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--brand-50);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--brand-700);
            transition: transform var(--transition-fast);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-50);
            color: var(--accent-600);
        }
        @media (max-width: 767px) {
            .section-title {
                font-size: 1.7rem;
            }
            .data-table {
                font-size: 0.8rem;
                min-width: 680px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
        }

/* roulang page: category5 */
:root {
            --brand-50: #f0f4f8;
            --brand-100: #dbe4ed;
            --brand-200: #bccadd;
            --brand-300: #91a9c4;
            --brand-400: #5f7ea6;
            --brand-500: #3c5e8a;
            --brand-600: #2c486e;
            --brand-700: #223a58;
            --brand-800: #16273d;
            --brand-900: #0f1a2b;
            --brand-950: #0a1220;
            --accent-50: #fef3e6;
            --accent-100: #fde3c8;
            --accent-200: #fac790;
            --accent-300: #f5a34e;
            --accent-400: #ef8618;
            --accent-500: #d96f0e;
            --accent-600: #b3550b;
            --accent-700: #8f410d;
            --accent-800: #6e330e;
            --accent-900: #562a0d;
            --surface: #ffffff;
            --surface-muted: #f7f9fc;
            --surface-dark: #0f1a2b;
            --text-primary: #0f1a2b;
            --text-secondary: #3d4c62;
            --text-muted: #6b7a93;
            --text-inverse: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(15, 26, 43, 0.06), 0 1px 2px rgba(15, 26, 43, 0.04);
            --shadow-md: 0 6px 18px rgba(15, 26, 43, 0.08), 0 2px 6px rgba(15, 26, 43, 0.04);
            --shadow-lg: 0 18px 40px rgba(15, 26, 43, 0.12), 0 6px 16px rgba(15, 26, 43, 0.06);
            --shadow-xl: 0 28px 60px rgba(15, 26, 43, 0.16), 0 10px 24px rgba(15, 26, 43, 0.08);
            --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 420ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--accent-500);
        }

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(239, 134, 24, 0.45);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        .container {
            width: 100%;
            max-width: 1360px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 40px;
            padding-right: 40px;
        }

        @media (max-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 68px;
            padding-top: 10px;
            padding-bottom: 10px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--brand-800);
            white-space: nowrap;
        }

        .nav-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }

        .nav-links {
            display: none;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--brand-700);
            background: var(--brand-50);
        }

        .nav-link.active {
            color: var(--brand-700);
            background: var(--brand-100);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 999px;
            background: var(--accent-500);
        }

        .nav-search-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--brand-50);
            color: var(--brand-600);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-search-btn:hover {
            background: var(--brand-100);
            color: var(--brand-800);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            background: var(--brand-700);
            color: #fff;
            font-weight: 600;
            font-size: 0.88rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--brand-800);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .mobile-menu-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--brand-50);
            color: var(--brand-700);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-menu-btn:hover {
            background: var(--brand-100);
        }

        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border-light);
            padding: 16px 20px 20px;
        }

        .mobile-menu.open {
            display: block;
            animation: mobileMenuIn 280ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        @keyframes mobileMenuIn {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .mobile-menu-link {
            display: block;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .mobile-menu-link:hover {
            background: var(--brand-50);
            color: var(--brand-700);
        }

        .mobile-menu-link.active {
            background: var(--brand-100);
            color: var(--brand-700);
            font-weight: 600;
        }

        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
            }
            .mobile-menu-btn {
                display: none;
            }
            .nav-search-btn {
                display: inline-flex;
            }
        }

        @media (max-width: 1023px) {
            .nav-links {
                display: none !important;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .nav-search-btn {
                display: none;
            }
        }

        /* Hero */
        .page-hero {
            background: linear-gradient(180deg, var(--brand-50) 0%, #f8fafc 100%);
            border-bottom: 1px solid var(--border-light);
            padding: 48px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(239, 134, 24, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 32px;
            position: relative;
            z-index: 1;
        }

        .page-hero-text {
            flex: 1 1 55%;
            min-width: 300px;
        }

        .page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: var(--accent-50);
            color: var(--accent-700);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            border: 1px solid var(--accent-200);
        }

        .page-hero-title {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--brand-900);
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .page-hero-desc {
            font-size: 1.06rem;
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .page-hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 24px;
        }

        .page-hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .page-hero-stat-value {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--brand-700);
            letter-spacing: -0.01em;
        }

        .page-hero-stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .page-hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: var(--brand-700);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--brand-800);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--brand-700);
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid var(--border-medium);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .btn-secondary:hover {
            border-color: var(--brand-300);
            background: var(--brand-50);
            color: var(--brand-800);
            transform: translateY(-2px);
        }

        .page-hero-visual {
            flex: 1 1 35%;
            min-width: 280px;
            position: relative;
        }

        .page-hero-image-wrapper {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
            background: #fff;
        }

        .page-hero-image-wrapper img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 32px 0 40px;
            }
            .page-hero-title {
                font-size: 1.8rem;
            }
            .page-hero-desc {
                font-size: 0.95rem;
            }
            .page-hero-image-wrapper img {
                height: 200px;
            }
        }

        /* Section base */
        .section {
            padding: 56px 0;
        }

        .section-header {
            display: flex;
            flex-wrap: wrap;
            align-items: end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 32px;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--accent-600);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.015em;
            color: var(--brand-900);
            line-height: 1.25;
            margin-bottom: 8px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.7;
        }

        /* Feature grid - non-uniform */
        .feature-layout {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 24px;
            align-items: stretch;
        }

        .feature-main-card {
            background: var(--brand-800);
            border-radius: var(--radius-lg);
            padding: 32px;
            color: var(--text-inverse);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 280px;
            position: relative;
            overflow: hidden;
        }

        .feature-main-card::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(239, 134, 24, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .feature-main-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .feature-main-card p {
            color: rgba(240, 244, 248, 0.8);
            font-size: 0.95rem;
            line-height: 1.7;
            position: relative;
            z-index: 1;
            max-width: 420px;
        }

        .feature-main-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .feature-side-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .feature-side-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-base);
            cursor: default;
        }

        .feature-side-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--brand-200);
        }

        .feature-side-card .side-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--brand-50);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--brand-600);
            margin-bottom: 12px;
        }

        .feature-side-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--brand-800);
            margin-bottom: 6px;
        }

        .feature-side-card p {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .feature-layout {
                grid-template-columns: 1fr;
            }
        }

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

        /* Timeline style */
        .timeline-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .timeline-item {
            display: flex;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            position: relative;
        }

        .timeline-item:last-child {
            border-bottom: none;
        }

        .timeline-marker {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--brand-100);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-700);
            font-weight: 700;
            font-size: 0.85rem;
        }

        .timeline-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--brand-800);
            margin-bottom: 6px;
        }

        .timeline-content p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .timeline-content .timeline-meta {
            display: flex;
            gap: 12px;
            margin-top: 6px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Info panel */
        .info-panel {
            background: var(--surface-muted);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid var(--border-light);
        }

        .info-panel-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--brand-800);
            margin-bottom: 16px;
        }

        .info-panel p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .info-panel p:last-child {
            margin-bottom: 0;
        }

        /* Badge row */
        .badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: 999px;
            background: var(--brand-50);
            color: var(--brand-600);
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid var(--brand-100);
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, var(--brand-800) 0%, var(--brand-950) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            color: var(--text-inverse);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 32px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: -40px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(239, 134, 24, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section-text {
            flex: 1 1 55%;
            position: relative;
            z-index: 1;
        }

        .cta-section-text h2 {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .cta-section-text p {
            color: rgba(240, 244, 248, 0.8);
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 500px;
        }

        .cta-section-actions {
            flex: 1 1 auto;
            display: flex;
            gap: 12px;
            justify-content: flex-end;
            position: relative;
            z-index: 1;
        }

        .btn-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--brand-800);
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .btn-light:hover {
            background: var(--brand-100);
            color: var(--brand-900);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid rgba(255, 255, 255, 0.35);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 32px 24px;
            }
            .cta-section-actions {
                justify-content: flex-start;
                flex-wrap: wrap;
            }
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: #fff;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--brand-200);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--brand-800);
            text-align: left;
            transition: all var(--transition-fast);
        }

        .faq-question:hover {
            background: var(--brand-50);
        }

        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--accent-500);
            flex-shrink: 0;
        }

        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-item.active .faq-answer {
            display: block;
            animation: faqFadeIn 220ms ease;
        }

        @keyframes faqFadeIn {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Footer */
        .site-footer {
            background: var(--surface-dark);
            color: rgba(240, 244, 248, 0.75);
            padding: 56px 0 28px;
            margin-top: 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .footer-brand-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(240, 244, 248, 0.65);
            max-width: 300px;
        }

        .footer-links-group h4 {
            font-size: 0.88rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.04em;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .footer-links-group ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links-group a {
            font-size: 0.88rem;
            color: rgba(240, 244, 248, 0.65);
            transition: color var(--transition-fast);
        }

        .footer-links-group a:hover {
            color: var(--accent-300);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(240, 244, 248, 0.5);
            margin-bottom: 4px;
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: rgba(240, 244, 248, 0.5);
        }

        .footer-bottom-links a {
            color: rgba(240, 244, 248, 0.5);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--accent-300);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* Data highlight */
        .data-highlight {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 24px;
        }

        .data-highlight-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: left;
            transition: all var(--transition-base);
        }

        .data-highlight-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .data-highlight-item .data-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--brand-700);
            letter-spacing: -0.02em;
            margin-bottom: 4px;
        }

        .data-highlight-item .data-label {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .data-highlight {
                grid-template-columns: 1fr 1fr;
            }
            .data-highlight-item .data-value {
                font-size: 1.4rem;
            }
        }

        /* Testimonial */
        .testimonial-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-base);
        }

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

        .testimonial-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--brand-100);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--brand-700);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .testimonial-author-info h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--brand-800);
            margin-bottom: 2px;
        }

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

/* roulang page: category7 */
:root {
            --brand-50: #f0f4f8;
            --brand-100: #dbe4ed;
            --brand-200: #bccadd;
            --brand-300: #91a9c4;
            --brand-400: #5f7ea6;
            --brand-500: #3c5e8a;
            --brand-600: #2c486e;
            --brand-700: #223a58;
            --brand-800: #16273d;
            --brand-900: #0f1a2b;
            --brand-950: #0a1220;
            --accent-50: #fef3e6;
            --accent-100: #fde3c8;
            --accent-200: #fac790;
            --accent-300: #f5a34e;
            --accent-400: #ef8618;
            --accent-500: #d96f0e;
            --accent-600: #b3550b;
            --accent-700: #8f410d;
            --accent-800: #6e330e;
            --accent-900: #562a0d;
            --surface: #ffffff;
            --surface-muted: #f7f9fc;
            --surface-dark: #0f1a2b;
            --text-primary: #0f1a2b;
            --text-secondary: #3d4c62;
            --text-muted: #6b7a93;
            --text-inverse: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(15, 26, 43, 0.06), 0 1px 2px rgba(15, 26, 43, 0.04);
            --shadow-md: 0 6px 18px rgba(15, 26, 43, 0.08), 0 2px 6px rgba(15, 26, 43, 0.04);
            --shadow-lg: 0 18px 40px rgba(15, 26, 43, 0.12), 0 6px 16px rgba(15, 26, 43, 0.06);
            --shadow-xl: 0 28px 60px rgba(15, 26, 43, 0.16), 0 10px 24px rgba(15, 26, 43, 0.08);
            --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 420ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'system-ui', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-500);
        }

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(239, 134, 24, 0.45);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        .container {
            width: 100%;
            max-width: 1360px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 40px;
            padding-right: 40px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 68px;
            padding-top: 10px;
            padding-bottom: 10px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--brand-800);
            white-space: nowrap;
        }

        .nav-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-600), var(--accent-500));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }

        .nav-links {
            display: none;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--brand-700);
            background: var(--brand-50);
        }

        .nav-link.active {
            color: var(--accent-600);
            background: var(--accent-50);
            font-weight: 700;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--surface-muted);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .nav-search-btn:hover {
            background: var(--brand-50);
            color: var(--brand-700);
            border-color: var(--brand-200);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
            background: linear-gradient(135deg, var(--brand-700), var(--brand-600));
        }

        .mobile-menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            background: var(--surface);
            color: var(--text-secondary);
            cursor: pointer;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--brand-50);
            color: var(--brand-700);
        }

        .mobile-menu {
            display: none;
            background: var(--surface);
            border-top: 1px solid var(--border-light);
            padding: 16px 20px;
            max-height: 70vh;
            overflow-y: auto;
        }

        .mobile-menu.open {
            display: block;
        }

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

        .mobile-nav-link:hover {
            background: var(--brand-50);
            color: var(--brand-700);
        }

        .mobile-nav-link.active {
            background: var(--accent-50);
            color: var(--accent-600);
            font-weight: 700;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background: linear-gradient(165deg, var(--brand-950) 0%, var(--brand-800) 45%, var(--brand-700) 100%);
            padding: 80px 0 70px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 43, 0.72) 0%, rgba(22, 39, 61, 0.55) 50%, rgba(15, 26, 43, 0.35) 100%);
            z-index: 1;
        }

        .hero-section .container {
            position: relative;
            z-index: 2;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-text {
            color: var(--text-inverse);
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--accent-200);
            background: rgba(239, 134, 24, 0.12);
            border: 1px solid rgba(239, 134, 24, 0.3);
            border-radius: 100px;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.15;
            margin-bottom: 20px;
            color: #fff;
        }

        .hero-title .highlight {
            color: var(--accent-300);
            position: relative;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(240, 244, 248, 0.78);
            max-width: 560px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-bottom: 30px;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-number {
            font-size: 1.7rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .hero-stat-label {
            font-size: 0.82rem;
            color: rgba(240, 244, 248, 0.6);
            margin-top: 2px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-400), var(--accent-500));
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-md);
            letter-spacing: 0.01em;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition-base);
            backdrop-filter: blur(8px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }

        /* Coupon Hero Panel */
        .coupon-hero-panel {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-xl);
            padding: 24px;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-xl);
        }

        .coupon-panel-label {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            font-weight: 600;
            color: rgba(240, 244, 248, 0.7);
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }

        .coupon-panel-label i {
            color: var(--accent-300);
        }

        .coupon-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .coupon-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            position: relative;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            cursor: pointer;
            border: 2px solid transparent;
        }

        .coupon-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
            border-color: var(--accent-300);
        }

        .coupon-card.coupon-main {
            border: 2px solid var(--accent-300);
            box-shadow: var(--shadow-xl);
            background: linear-gradient(135deg, #ffffff 0%, #fef9f1 100%);
        }

        .coupon-card.coupon-main::before {
            content: '主推';
            position: absolute;
            top: -12px;
            left: 24px;
            padding: 3px 14px;
            font-size: 0.75rem;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-400), var(--accent-600));
            border-radius: 100px;
            letter-spacing: 0.06em;
        }

        .coupon-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .coupon-title {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--brand-900);
        }

        .coupon-value-badge {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--accent-600);
            letter-spacing: -0.02em;
        }

        .coupon-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .coupon-divider {
            border-top: 2px dashed var(--border-medium);
            margin: 4px 0;
        }

        .coupon-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .coupon-code {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--brand-600);
            background: var(--brand-50);
            padding: 6px 14px;
            border-radius: 100px;
            letter-spacing: 0.06em;
        }

        .coupon-claim-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            font-size: 0.88rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-400), var(--accent-500));
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }

        .coupon-claim-btn:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
        }

        .coupon-claim-btn.claimed {
            background: var(--brand-400);
            cursor: default;
            transform: none;
            box-shadow: none;
        }

        /* Section Common */
        .section-block {
            padding: 72px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--accent-600);
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--brand-900);
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.8;
        }

        /* Pain Point Section */
        .pain-section {
            background: var(--surface-muted);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .pain-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
        }

        .pain-content {
            order: 1;
        }

        .pain-text {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 20px;
        }

        .pain-text strong {
            color: var(--brand-700);
            font-weight: 700;
        }

        .pain-points-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 20px;
        }

        .pain-point-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 18px 20px;
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .pain-point-item:hover {
            border-color: var(--brand-200);
            box-shadow: var(--shadow-sm);
        }

        .pain-point-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(239, 134, 24, 0.1);
            color: var(--accent-600);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .pain-point-text {
            flex: 1;
        }

        .pain-point-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .pain-point-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .pain-image-wrap {
            order: 2;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .pain-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 280px;
        }

        /* Solution Section */
        .solution-section {
            background: var(--surface);
        }

        .solution-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 48px;
            align-items: center;
        }

        .solution-content {
            order: 1;
        }

        .solution-feature-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
            margin-top: 24px;
        }

        .solution-feature-card {
            display: flex;
            gap: 16px;
            padding: 20px 22px;
            background: var(--surface-muted);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }

        .solution-feature-card:hover {
            background: var(--surface);
            border-color: var(--brand-200);
            box-shadow: var(--shadow-md);
        }

        .solution-feature-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--brand-100), var(--brand-50));
            color: var(--brand-600);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .solution-feature-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .solution-feature-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .solution-image-wrap {
            order: 2;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .solution-image-wrap img {
            width: 100%;
            object-fit: cover;
            min-height: 300px;
        }

        /* Results / Data Section */
        .results-section {
            background: linear-gradient(180deg, var(--brand-950) 0%, var(--brand-800) 100%);
            padding: 72px 0;
        }

        .results-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .results-head .section-title {
            color: #fff;
        }

        .results-head .section-subtitle {
            color: rgba(240, 244, 248, 0.7);
            margin-left: auto;
            margin-right: auto;
        }

        .results-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .result-stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-base);
        }

        .result-stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }

        .result-stat-number {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--accent-300);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .result-stat-label {
            font-size: 0.92rem;
            color: rgba(240, 244, 248, 0.7);
            margin-top: 6px;
            font-weight: 500;
        }

        .result-stat-detail {
            font-size: 0.82rem;
            color: rgba(240, 244, 248, 0.5);
            margin-top: 4px;
        }

        /* Expert Team Section */
        .team-section {
            background: var(--surface-muted);
        }

        .team-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .team-image-wrap img {
            width: 100%;
            object-fit: cover;
            min-height: 280px;
        }

        .team-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 20px;
        }

        .team-meta-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .team-meta-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--brand-600);
            background: var(--brand-50);
            border-radius: 100px;
            border: 1px solid var(--brand-100);
        }

        /* Testimonials Section */
        .testimonials-section {
            background: var(--surface);
        }

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

        .testimonial-card {
            padding: 28px 26px;
            background: var(--surface-muted);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .testimonial-card:hover {
            border-color: var(--brand-200);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .testimonial-text {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-400), var(--brand-600));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .testimonial-name {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .testimonial-role {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* Pricing / Service Section */
        .service-section {
            background: var(--surface-muted);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .service-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 32px;
        }

        .service-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--brand-200);
            transform: translateY(-4px);
        }

        .service-card.featured {
            border: 2px solid var(--accent-300);
            box-shadow: var(--shadow-md);
        }

        .service-card.featured::before {
            content: '热门推荐';
            position: absolute;
            top: -12px;
            right: 24px;
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-400), var(--accent-600));
            border-radius: 100px;
            letter-spacing: 0.05em;
        }

        .service-card-name {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--brand-900);
            margin-bottom: 8px;
        }

        .service-card-price {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-600);
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .service-card-price .unit {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-muted);
        }

        .service-card-features {
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
            margin-bottom: 20px;
        }

        .service-feature-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-secondary);
        }

        .service-feature-item i {
            color: var(--accent-500);
            flex-shrink: 0;
        }

        /* Process Section */
        .process-section {
            background: var(--surface);
        }

        .process-steps {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
            margin-top: 32px;
        }

        .process-step {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 22px 24px;
            background: var(--surface-muted);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .process-step:hover {
            border-color: var(--brand-200);
            box-shadow: var(--shadow-sm);
        }

        .process-step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            color: #fff;
            font-size: 1.2rem;
            font-weight: 900;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .process-step-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .process-step-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* FAQ Section */
        .faq-section {
            background: var(--surface-muted);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 28px;
        }

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

        .faq-item:hover {
            border-color: var(--brand-200);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--accent-600);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--brand-50);
            color: var(--brand-500);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform var(--transition-base);
            font-size: 0.8rem;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--accent-50);
            color: var(--accent-600);
        }

        .faq-answer {
            display: none;
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            display: block;
            animation: fadeInUp 0.3s ease;
        }

        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(-8px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(165deg, var(--brand-950) 0%, var(--brand-700) 100%);
            padding: 72px 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: 0.12;
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-title {
            font-size: 2.4rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-subtitle {
            font-size: 1.1rem;
            color: rgba(240, 244, 248, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* Footer */
        .site-footer {
            background: var(--surface-dark);
            color: rgba(240, 244, 248, 0.75);
            padding: 56px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

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

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 0.9rem;
            color: rgba(240, 244, 248, 0.55);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-links-group h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .footer-links-group ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links-group a {
            font-size: 0.88rem;
            color: rgba(240, 244, 248, 0.55);
            transition: color var(--transition-fast);
        }

        .footer-links-group a:hover {
            color: var(--accent-300);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 14px;
            align-items: flex-start;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(240, 244, 248, 0.45);
            line-height: 1.7;
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(240, 244, 248, 0.45);
        }

        .footer-bottom-links a {
            color: rgba(240, 244, 248, 0.55);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--accent-300);
        }

        /* Responsive */
        @media (min-width: 640px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
            .hero-title {
                font-size: 3.2rem;
            }
            .coupon-grid {
                grid-template-columns: 1fr 1fr;
            }
            .coupon-card.coupon-main {
                grid-column: span 2;
            }
            .solution-feature-grid {
                grid-template-columns: 1fr 1fr;
            }
            .testimonials-grid {
                grid-template-columns: 1fr 1fr;
            }
            .service-grid {
                grid-template-columns: 1fr 1fr;
            }
            .service-card.featured {
                grid-column: span 2;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
            .nav-links {
                display: flex;
            }
            .mobile-menu-toggle {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 60px;
            }
            .pain-grid {
                grid-template-columns: 1fr 1fr;
            }
            .pain-content {
                order: 1;
            }
            .pain-image-wrap {
                order: 2;
            }
            .solution-grid {
                grid-template-columns: 1fr 1fr;
            }
            .solution-content {
                order: 1;
            }
            .solution-image-wrap {
                order: 2;
            }
            .results-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .team-grid {
                grid-template-columns: 1fr 1fr;
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .service-card.featured {
                grid-column: span 1;
            }
            .process-steps {
                grid-template-columns: repeat(4, 1fr);
            }
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        @media (min-width: 1024px) {
            .hero-title {
                font-size: 3.6rem;
            }
            .section-title {
                font-size: 2.6rem;
            }
            .testimonials-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 767px) {
            .nav-links {
                display: none;
            }
            .nav-cta-btn span {
                display: none;
            }
            .nav-cta-btn {
                padding: 10px 14px;
            }
            .hero-section {
                padding: 48px 0 48px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .section-block {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .results-section {
                padding: 48px 0;
            }
            .cta-section {
                padding: 48px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-stats-row {
                gap: 16px;
            }
            .hero-stat-number {
                font-size: 1.3rem;
            }
            .coupon-grid {
                grid-template-columns: 1fr;
            }
            .coupon-card.coupon-main {
                grid-column: span 1;
            }
            .solution-feature-grid {
                grid-template-columns: 1fr;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }