/* roulang page: index */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #60a5fa;
            --color-accent: #f97316;
            --color-accent-dark: #ea580c;
            --color-bg: #fafafa;
            --color-surface: #ffffff;
            --color-text: #171717;
            --color-text-weak: #525252;
            --color-text-muted: #737373;
            --color-border: #e5e5e5;
            --color-border-light: #f0f0f0;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* Top Info Bar */
        .top-info-bar {
            background: #0f1d3a;
            color: #cbd5e1;
            font-size: 0.8rem;
            padding: 6px 0;
            letter-spacing: 0.02em;
        }
        .top-info-bar a {
            color: #e2e8f0;
            transition: color var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #ffffff;
        }

        /* Main Nav */
        .main-nav {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .main-nav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 20px;
        }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0f1d3a;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--color-brand);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-links a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: #f1f5f9;
            color: var(--color-brand);
        }
        .nav-links a.nav-active {
            background: #eff6ff;
            color: var(--color-brand);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--color-brand) !important;
            color: #ffffff !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            font-weight: 600 !important;
            transition: all var(--transition-fast) !important;
        }
        .nav-cta-btn:hover {
            background: var(--color-brand-dark) !important;
            color: #ffffff !important;
            box-shadow: var(--shadow-md);
        }

        /* Mobile Nav */
        .mobile-menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: #0f1d3a;
            padding: 6px;
            border-radius: var(--radius-sm);
        }
        .mobile-menu-toggle:hover {
            background: #f1f5f9;
        }
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
        }

        /* Section Spacing */
        .section-py {
            padding: 60px 0;
        }
        @media (max-width: 768px) {
            .section-py {
                padding: 40px 0;
            }
        }
        .section-py-sm {
            padding: 40px 0;
        }
        @media (max-width: 768px) {
            .section-py-sm {
                padding: 28px 0;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #0f1d3a 0%, #1a365d 40%, #1e40af 100%);
            color: #ffffff;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: #cbd5e1;
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .btn-primary {
            display: inline-block;
            background: var(--color-accent);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
            letter-spacing: 0.02em;
        }
        .btn-primary:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.5);
            transform: translateY(-1px);
        }
        .btn-outline-light {
            display: inline-block;
            background: transparent;
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition);
        }
        .btn-outline-light:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }
        .hero-data-points {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 24px;
        }
        .hero-data-point {
            text-align: center;
        }
        .hero-data-point .dp-number {
            font-size: 2rem;
            font-weight: 800;
            color: #fbbf24;
            line-height: 1;
        }
        .hero-data-point .dp-label {
            font-size: 0.8rem;
            color: #cbd5e1;
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-section {
                min-height: auto;
                padding: 50px 0;
            }
            .hero-data-points {
                gap: 16px;
            }
            .hero-data-point .dp-number {
                font-size: 1.5rem;
            }
        }

        /* Cards */
        .card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .card-accent {
            border-top: 3px solid var(--color-brand);
        }

        /* Badge */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .badge-blue {
            background: #eff6ff;
            color: #1d4ed8;
        }
        .badge-orange {
            background: #fff7ed;
            color: #c2410c;
        }
        .badge-green {
            background: #f0fdf4;
            color: #166534;
        }
        .badge-purple {
            background: #faf5ff;
            color: #7c3aed;
        }

        /* Section Titles */
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-brand);
            margin-bottom: 8px;
        }
        .section-heading {
            font-size: 2rem;
            font-weight: 700;
            color: #0f1d3a;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-weak);
            max-width: 700px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-heading {
                font-size: 1.5rem;
            }
        }

        /* Coupon Grid */
        .coupon-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 2px dashed var(--color-border);
            padding: 20px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .coupon-card:hover {
            border-color: var(--color-brand);
            box-shadow: var(--shadow-md);
        }
        .coupon-card .coupon-value {
            font-size: 2.4rem;
            font-weight: 800;
            color: #f97316;
            line-height: 1;
        }
        .coupon-card .coupon-value small {
            font-size: 1rem;
            font-weight: 600;
        }
        .coupon-card .coupon-condition {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        .coupon-card .coupon-btn {
            display: inline-block;
            margin-top: 12px;
            padding: 8px 20px;
            background: var(--color-brand);
            color: #fff;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: all var(--transition-fast);
        }
        .coupon-card .coupon-btn:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow);
        }

        /* Countdown */
        .countdown-bar {
            background: linear-gradient(135deg, #1e40af, #0f1d3a);
            color: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            box-shadow: var(--shadow-lg);
        }
        .countdown-timer {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .countdown-unit {
            background: rgba(255, 255, 255, 0.15);
            border-radius: var(--radius);
            padding: 10px 16px;
            text-align: center;
            min-width: 56px;
        }
        .countdown-unit .cd-num {
            font-size: 1.8rem;
            font-weight: 800;
            line-height: 1;
        }
        .countdown-unit .cd-label {
            font-size: 0.7rem;
            opacity: 0.8;
            margin-top: 2px;
        }
        @media (max-width: 768px) {
            .countdown-bar {
                flex-direction: column;
                text-align: center;
                padding: 20px;
            }
            .countdown-unit {
                min-width: 44px;
                padding: 8px 12px;
            }
            .countdown-unit .cd-num {
                font-size: 1.4rem;
            }
        }

        /* Tier Cards */
        .tier-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            position: relative;
            text-align: center;
            height: 100%;
        }
        .tier-card.featured {
            border: 2px solid var(--color-brand);
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            z-index: 2;
        }
        .tier-card.featured::before {
            content: '热门推荐';
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-brand);
            color: #fff;
            padding: 4px 16px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 700;
            white-space: nowrap;
        }
        .tier-card .tier-price {
            font-size: 2.5rem;
            font-weight: 800;
            color: #0f1d3a;
        }
        .tier-card .tier-price small {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-muted);
        }
        .tier-card .tier-features {
            list-style: none;
            padding: 0;
            margin: 16px 0;
            text-align: left;
        }
        .tier-card .tier-features li {
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--color-text-weak);
            position: relative;
            padding-left: 22px;
        }
        .tier-card .tier-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #16a34a;
            font-weight: 700;
        }
        @media (max-width: 768px) {
            .tier-card.featured {
                transform: none;
            }
        }

        /* Hot List */
        .hot-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: #ffffff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }
        .hot-list-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-brand-light);
        }
        .hot-list-rank {
            font-size: 1.6rem;
            font-weight: 800;
            color: #f97316;
            min-width: 40px;
            text-align: center;
            flex-shrink: 0;
        }
        .hot-list-rank.top1 {
            color: #ef4444;
        }
        .hot-list-rank.top2 {
            color: #f97316;
        }
        .hot-list-rank.top3 {
            color: #eab308;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 16px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-item .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            color: #0f1d3a;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .faq-item .faq-answer {
            color: var(--color-text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-top: 8px;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item .faq-icon {
            transition: transform var(--transition-fast);
            flex-shrink: 0;
            font-size: 1.2rem;
            color: var(--color-brand);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        /* News List */
        .news-item {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .news-item:hover {
            background: #fafbff;
            padding-left: 8px;
            border-radius: var(--radius-sm);
        }
        .news-date {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            white-space: nowrap;
            flex-shrink: 0;
            padding-top: 2px;
        }
        .news-info h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #0f1d3a;
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .news-info p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.5;
            margin-bottom: 6px;
        }
        .news-readmore {
            font-size: 0.8rem;
            color: var(--color-brand);
            font-weight: 600;
        }
        .news-readmore:hover {
            text-decoration: underline;
        }

        /* Footer */
        .site-footer {
            background: #0f1d3a;
            color: #cbd5e1;
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }
        .site-footer a {
            color: #e2e8f0;
            transition: color var(--transition-fast);
        }
        .site-footer a:hover {
            color: #ffffff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #94a3b8;
        }
        .footer-bottom a {
            color: #94a3b8;
        }
        .footer-bottom a:hover {
            color: #ffffff;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-in {
            animation: fadeInUp 0.5s ease forwards;
        }

        /* Floating CTA */
        .floating-cta {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 999;
            background: var(--color-accent);
            color: #ffffff;
            padding: 14px 24px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.4);
            transition: all var(--transition);
            letter-spacing: 0.03em;
        }
        .floating-cta:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 12px 28px rgba(249, 115, 22, 0.55);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .floating-cta {
                bottom: 12px;
                right: 12px;
                padding: 12px 20px;
                font-size: 0.85rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #60a5fa;
            --color-accent: #f97316;
            --color-accent-dark: #ea580c;
            --color-bg: #fafafa;
            --color-surface: #ffffff;
            --color-text: #171717;
            --color-text-weak: #525252;
            --color-text-muted: #737373;
            --color-border: #e5e5e5;
            --color-border-light: #f0f0f0;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        input,
        select {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .top-info-bar {
            background: #0f1d3a;
            color: #cbd5e1;
            font-size: 0.8rem;
            padding: 6px 0;
            line-height: 1.5;
        }
        .top-info-bar .inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-info-bar a {
            color: #e2e8f0;
            transition: color var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #ffffff;
        }

        .main-nav {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .main-nav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 20px;
        }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0f1d3a;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--color-brand);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-links a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: #f1f5f9;
            color: var(--color-brand);
        }
        .nav-links a.nav-active {
            background: #eff6ff;
            color: var(--color-brand);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--color-brand) !important;
            color: #ffffff !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            font-weight: 600 !important;
            transition: all var(--transition-fast) !important;
        }
        .nav-cta-btn:hover {
            background: var(--color-brand-dark) !important;
            color: #ffffff !important;
            box-shadow: var(--shadow-md);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: #0f1d3a;
            padding: 6px;
            border-radius: var(--radius-sm);
        }
        .mobile-menu-toggle:hover {
            background: #f1f5f9;
        }

        .section-py {
            padding: 60px 0;
        }
        .section-py-sm {
            padding: 40px 0;
        }

        .btn-primary {
            display: inline-block;
            background: var(--color-brand);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            text-align: center;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--color-brand);
            padding: 11px 26px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 2px solid var(--color-brand);
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: var(--color-brand);
            color: #ffffff;
            box-shadow: var(--shadow-md);
        }
        .btn-accent {
            display: inline-block;
            background: var(--color-accent);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            text-align: center;
            border: none;
            cursor: pointer;
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 1.05rem;
            border-radius: 28px;
        }

        .card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--color-border-light);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-blue {
            background: #eff6ff;
            color: var(--color-brand);
        }
        .badge-orange {
            background: #fff7ed;
            color: var(--color-accent);
        }
        .badge-green {
            background: #ecfdf5;
            color: var(--color-success);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-brand);
            line-height: 1.1;
            letter-spacing: -0.02em;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 20px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border-light);
        }
        .faq-item:hover {
            color: var(--color-brand);
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .faq-answer {
            margin-top: 12px;
            color: var(--color-text-weak);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--color-brand);
        }
        .faq-icon {
            transition: transform var(--transition-fast);
            flex-shrink: 0;
            color: var(--color-text-muted);
        }

        .site-footer {
            background: #0f1d3a;
            color: #cbd5e1;
            padding: 48px 0 28px;
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .site-footer h5 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 6px;
        }
        .site-footer ul li a {
            color: #94a3b8;
            transition: color var(--transition-fast);
        }
        .site-footer ul li a:hover {
            color: #ffffff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: #94a3b8;
        }
        .footer-bottom a {
            color: #cbd5e1;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #ffffff;
        }

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 29, 58, 0.88) 0%, rgba(15, 29, 58, 0.7) 40%, rgba(37, 99, 235, 0.45) 100%);
            z-index: 1;
        }
        .hero-content-wrap {
            position: relative;
            z-index: 2;
        }

        .download-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 32px;
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--color-border-light);
        }
        .download-card input {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius);
            border: 2px solid var(--color-border);
            font-size: 0.95rem;
            transition: border-color var(--transition-fast);
            background: #f9fafb;
        }
        .download-card input:focus {
            border-color: var(--color-brand);
            outline: none;
            background: #ffffff;
        }

        .toc-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .toc-list li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--color-text-weak);
        }
        .toc-list li:last-child {
            border-bottom: none;
        }
        .toc-list .toc-num {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #eff6ff;
            color: var(--color-brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.78rem;
            flex-shrink: 0;
        }

        .pricing-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow);
            border: 2px solid var(--color-border-light);
            transition: all var(--transition);
            text-align: center;
            position: relative;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-4px);
        }
        .pricing-card.featured {
            border-color: var(--color-brand);
            box-shadow: var(--shadow-lg);
            background: #fafcff;
        }
        .pricing-card.featured::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-brand);
            color: #fff;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        @media (max-width: 1024px) {
            .container-custom {
                padding: 0 16px;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .section-py {
                padding: 40px 0;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section-py {
                padding: 32px 0;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .hero-content-wrap {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 12px;
            }
            .nav-logo {
                font-size: 1.25rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .pricing-card {
                padding: 20px 16px;
            }
            .download-card {
                padding: 20px;
            }
        }

/* roulang page: category3 */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #60a5fa;
            --color-accent: #f97316;
            --color-accent-dark: #ea580c;
            --color-bg: #fafafa;
            --color-surface: #ffffff;
            --color-text: #171717;
            --color-text-weak: #525252;
            --color-text-muted: #737373;
            --color-border: #e5e5e5;
            --color-border-light: #f0f0f0;
            --color-success: #16a34a;
            --color-warning: #f59e0b;
            --color-danger: #dc2626;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Top Info Bar */
        .top-info-bar {
            background: #0f1d3a;
            color: #cbd5e1;
            font-size: 0.8rem;
            padding: 6px 0;
            line-height: 1.4;
        }
        .top-info-bar .info-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-info-bar a {
            color: #e2e8f0;
            transition: color var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #ffffff;
        }
        .top-info-bar .info-tag {
            background: var(--color-accent);
            color: #fff;
            padding: 2px 10px;
            border-radius: var(--radius-full);
            font-size: 0.72rem;
            font-weight: 600;
            animation: pulse-tag 2s ease-in-out infinite;
        }
        @keyframes pulse-tag {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.75;
            }
        }

        /* Main Nav */
        .main-nav {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .main-nav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 20px;
        }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0f1d3a;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--color-brand);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-links a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: #f1f5f9;
            color: var(--color-brand);
        }
        .nav-links a.nav-active {
            background: #eff6ff;
            color: var(--color-brand);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--color-brand) !important;
            color: #ffffff !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            font-weight: 600 !important;
            transition: all var(--transition-fast) !important;
        }
        .nav-cta-btn:hover {
            background: var(--color-brand-dark) !important;
            color: #ffffff !important;
            box-shadow: var(--shadow-md);
        }

        /* Mobile Nav */
        .mobile-menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: #0f1d3a;
            padding: 6px;
            border-radius: var(--radius-sm);
        }
        .mobile-menu-toggle:hover {
            background: #f1f5f9;
        }

        /* Section Spacing */
        .section-py {
            padding: 60px 0;
        }
        .section-py-sm {
            padding: 40px 0;
        }
        .section-py-lg {
            padding: 80px 0;
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #0f1d3a 0%, #1a2f5a 40%, #1e3a6e 100%);
            color: #ffffff;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section .hero-bg-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.25;
            pointer-events: none;
        }
        .hero-section .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 29, 58, 0.7) 0%, rgba(15, 29, 58, 0.85) 100%);
            pointer-events: none;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
            width: 100%;
        }
        .hero-section .hero-text {
            flex: 1 1 400px;
            min-width: 280px;
        }
        .hero-section .hero-visual {
            flex: 1 1 350px;
            min-width: 280px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-badge {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            animation: badge-bounce 2.5s ease-in-out infinite;
            margin-bottom: 16px;
            box-shadow: 0 0 20px rgba(249, 115, 22, 0.5);
        }
        @keyframes badge-bounce {
            0%,
            100% {
                transform: translateY(0);
            }
            30% {
                transform: translateY(-6px);
            }
            60% {
                transform: translateY(0);
            }
            80% {
                transform: translateY(-3px);
            }
        }
        .hero-section h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .hero-section .hero-subtitle {
            font-size: 1.15rem;
            color: #cbd5e1;
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .hero-cta-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-block;
            background: var(--color-brand);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            letter-spacing: 0.02em;
            box-shadow: var(--shadow-md);
        }
        .btn-primary:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            display: inline-block;
            background: transparent;
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        .btn-accent {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            letter-spacing: 0.02em;
            box-shadow: var(--shadow-md);
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .hero-visual-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            text-align: center;
            box-shadow: var(--shadow-xl);
        }
        .hero-visual-card img {
            border-radius: var(--radius);
            margin-bottom: 16px;
            width: 100%;
            max-width: 320px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-visual-card .visual-label {
            font-size: 0.85rem;
            color: #94a3b8;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        /* Section titles */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #0f1d3a;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-weak);
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header.left {
            text-align: left;
        }

        /* Cards */
        .card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .card-icon.blue {
            background: #eff6ff;
            color: var(--color-brand);
        }
        .card-icon.orange {
            background: #fff7ed;
            color: var(--color-accent);
        }
        .card-icon.green {
            background: #f0fdf4;
            color: var(--color-success);
        }
        .card-icon.purple {
            background: #faf5ff;
            color: #9333ea;
        }
        .card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #0f1d3a;
        }
        .card p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
        }

        /* Feature list */
        .feature-list {
            list-style: none;
            padding: 0;
        }
        .feature-list li {
            padding: 8px 0 8px 28px;
            position: relative;
            font-size: 0.95rem;
            color: var(--color-text-weak);
            line-height: 1.5;
        }
        .feature-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 8px;
            color: var(--color-success);
            font-weight: 700;
            font-size: 0.95rem;
        }

        /* Stats */
        .stat-block {
            text-align: center;
            padding: 20px;
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-brand);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* Pricing */
        .pricing-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow);
            border: 2px solid var(--color-border-light);
            transition: all var(--transition);
            text-align: center;
            height: 100%;
            position: relative;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .pricing-card.featured {
            border-color: var(--color-brand);
            box-shadow: var(--shadow-lg);
            background: #f8faff;
            transform: scale(1.03);
            z-index: 2;
        }
        .pricing-card.featured:hover {
            transform: scale(1.03) translateY(-4px);
        }
        .pricing-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-accent);
            color: #fff;
            padding: 4px 16px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 700;
            white-space: nowrap;
            letter-spacing: 0.03em;
        }
        .pricing-price {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0f1d3a;
            margin: 12px 0;
        }
        .pricing-price span {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text-muted);
        }
        .pricing-features {
            list-style: none;
            padding: 0;
            margin: 20px 0;
            text-align: left;
        }
        .pricing-features li {
            padding: 6px 0 6px 24px;
            position: relative;
            font-size: 0.88rem;
            color: var(--color-text-weak);
        }
        .pricing-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--color-success);
            font-weight: 700;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 16px 0;
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            color: #0f1d3a;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition-fast);
            padding: 4px 0;
        }
        .faq-question:hover {
            color: var(--color-brand);
        }
        .faq-question .faq-icon {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-answer {
            color: var(--color-text-weak);
            font-size: 0.9rem;
            line-height: 1.6;
            padding-top: 8px;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--color-brand);
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, #1e3a6e 0%, #0f1d3a 100%);
            color: #fff;
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: #cbd5e1;
            margin-bottom: 24px;
            font-size: 1rem;
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: #0f1d3a;
            color: #cbd5e1;
            padding: 48px 0 24px;
            font-size: 0.88rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 32px;
        }
        .footer-col h5 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 14px;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #94a3b8;
            transition: color var(--transition-fast);
            font-size: 0.85rem;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #94a3b8;
            line-height: 1.8;
        }
        .footer-bottom a {
            color: #94a3b8;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Process steps */
        .step-row {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            counter-reset: step;
        }
        .step-item {
            flex: 1 1 200px;
            min-width: 180px;
            text-align: center;
            position: relative;
            padding: 24px 16px;
            counter-increment: step;
        }
        .step-item::before {
            content: counter(step);
            display: block;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-brand);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            line-height: 48px;
            margin: 0 auto 14px;
            text-align: center;
            box-shadow: var(--shadow-md);
        }
        .step-item h4 {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 6px;
            color: #0f1d3a;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.5;
        }

        /* Scenario cards */
        .scenario-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            height: 100%;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .scenario-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .scenario-card .scenario-body {
            padding: 20px;
        }
        .scenario-card h4 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 6px;
            color: #0f1d3a;
        }
        .scenario-card p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.5;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .container-custom {
                padding: 0 16px;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .pricing-card.featured {
                transform: scale(1);
            }
            .pricing-card.featured:hover {
                transform: scale(1) translateY(-4px);
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .nav-cta-btn {
                text-align: center;
                justify-content: center;
            }
            .hero-section {
                min-height: auto;
                padding: 40px 0;
            }
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .hero-section .hero-content {
                flex-direction: column;
                gap: 24px;
            }
            .hero-section .hero-visual {
                order: -1;
            }
            .section-py {
                padding: 40px 0;
            }
            .section-py-lg {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .cta-section {
                padding: 32px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .step-row {
                flex-direction: column;
                gap: 12px;
            }
            .step-item {
                flex: 1 1 auto;
                text-align: left;
                display: flex;
                align-items: center;
                gap: 14px;
                padding: 12px;
            }
            .step-item::before {
                margin: 0;
                flex-shrink: 0;
                width: 40px;
                height: 40px;
                line-height: 40px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 1.5rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .hero-cta-group .btn-primary,
            .hero-cta-group .btn-outline-light {
                text-align: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .pricing-card {
                padding: 24px 16px;
            }
            .pricing-price {
                font-size: 2rem;
            }
            .card {
                padding: 20px 16px;
            }
        }

/* roulang page: category2 */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #60a5fa;
            --color-accent: #f97316;
            --color-accent-dark: #ea580c;
            --color-bg: #fafafa;
            --color-surface: #ffffff;
            --color-text: #171717;
            --color-text-weak: #525252;
            --color-text-muted: #737373;
            --color-border: #e5e5e5;
            --color-border-light: #f0f0f0;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Top Info Bar */
        .top-info-bar {
            background: #0f1d3a;
            color: #cbd5e1;
            font-size: 0.8rem;
            padding: 6px 0;
            text-align: center;
            letter-spacing: 0.02em;
        }
        .top-info-bar a {
            color: #e2e8f0;
            transition: color var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #ffffff;
        }

        /* Main Nav */
        .main-nav {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .main-nav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 20px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0f1d3a;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--color-brand);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-links a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: #f1f5f9;
            color: var(--color-brand);
        }
        .nav-links a.nav-active {
            background: #eff6ff;
            color: var(--color-brand);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--color-brand) !important;
            color: #ffffff !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            font-weight: 600 !important;
            transition: all var(--transition-fast) !important;
        }
        .nav-cta-btn:hover {
            background: var(--color-brand-dark) !important;
            color: #ffffff !important;
            box-shadow: var(--shadow-md);
        }

        /* Mobile Nav */
        .mobile-menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: #0f1d3a;
            padding: 6px;
            border-radius: var(--radius-sm);
        }
        .mobile-menu-toggle:hover {
            background: #f1f5f9;
        }

        /* Section Spacing */
        .section-py {
            padding: 60px 0;
        }
        .section-py-sm {
            padding: 40px 0;
        }

        /* Hero Coupon Wall */
        .hero-coupon-wall {
            background: linear-gradient(160deg, #0f1d3a 0%, #1a2d50 35%, #1e3a5f 65%, #0f1d3a 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0 100px;
            min-height: 600px;
            display: flex;
            align-items: center;
        }
        .hero-coupon-wall::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-coupon-wall::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-coupon-inner {
            position: relative;
            z-index: 1;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .hero-coupon-label {
            display: inline-block;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fbbf24;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-coupon-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
            line-height: 1.25;
        }
        .hero-coupon-subtitle {
            font-size: 1.1rem;
            color: #cbd5e1;
            margin-bottom: 40px;
            max-width: 600px;
            line-height: 1.6;
        }
        .coupon-wall-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
            align-items: stretch;
            width: 100%;
            max-width: 1000px;
        }
        .coupon-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 0;
            position: relative;
            box-shadow: var(--shadow-xl);
            transition: all var(--transition-slow);
            display: flex;
            flex-direction: column;
            overflow: hidden;
            width: 300px;
            flex-shrink: 0;
        }
        .coupon-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 28px 50px rgba(0, 0, 0, 0.2);
        }
        .coupon-card.coupon-main {
            width: 360px;
            transform: scale(1.05);
            z-index: 2;
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.25);
            border: 3px solid #fbbf24;
        }
        .coupon-card.coupon-main:hover {
            transform: scale(1.05) translateY(-6px);
            box-shadow: 0 32px 56px rgba(0, 0, 0, 0.3);
        }
        .coupon-card-header {
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            padding: 22px 24px;
            text-align: center;
            color: #ffffff;
            position: relative;
        }
        .coupon-card.coupon-main .coupon-card-header {
            background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
            padding: 28px 24px;
        }
        .coupon-card-header .coupon-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            padding: 4px 14px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 8px;
        }
        .coupon-card-header .coupon-value {
            font-size: 3rem;
            font-weight: 900;
            letter-spacing: 0.02em;
            line-height: 1;
        }
        .coupon-card.coupon-main .coupon-card-header .coupon-value {
            font-size: 3.6rem;
        }
        .coupon-card-header .coupon-value small {
            font-size: 1.2rem;
            font-weight: 500;
        }
        .coupon-card-body {
            padding: 20px 24px;
            text-align: center;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 10px;
            border-top: 2px dashed #e5e5e5;
        }
        .coupon-card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #0f1d3a;
            margin: 0;
        }
        .coupon-card-body p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.5;
        }
        .coupon-card-body .coupon-validity {
            font-size: 0.75rem;
            color: #a1a1aa;
            margin-top: 4px;
        }
        .coupon-card-footer {
            padding: 16px 24px 20px;
            text-align: center;
            border-top: 1px solid var(--color-border-light);
        }
        .btn-coupon-claim {
            display: inline-block;
            background: var(--color-brand);
            color: #ffffff;
            padding: 10px 28px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: none;
            width: 100%;
            text-align: center;
        }
        .btn-coupon-claim:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .coupon-card.coupon-main .btn-coupon-claim {
            background: var(--color-accent);
            font-size: 1.05rem;
            padding: 12px 32px;
            letter-spacing: 0.04em;
        }
        .coupon-card.coupon-main .btn-coupon-claim:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 12px 28px rgba(249, 115, 22, 0.35);
        }

        /* Section Titles */
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-brand);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: #0f1d3a;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-weak);
            max-width: 700px;
            line-height: 1.7;
            margin-bottom: 32px;
        }

        /* Feature Cards */
        .feature-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--color-border-light);
            height: 100%;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        .feature-icon.blue {
            background: #eff6ff;
            color: #2563eb;
        }
        .feature-icon.orange {
            background: #fff7ed;
            color: #f97316;
        }
        .feature-icon.green {
            background: #f0fdf4;
            color: #16a34a;
        }
        .feature-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #0f1d3a;
            margin: 0;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Stats Panel */
        .stats-panel {
            background: #0f1d3a;
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: space-around;
            text-align: center;
        }
        .stat-item {
            flex: 1;
            min-width: 140px;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: #ffffff;
            letter-spacing: 0.02em;
            line-height: 1;
        }
        .stat-number span {
            color: #fbbf24;
        }
        .stat-label {
            font-size: 0.9rem;
            color: #cbd5e1;
            margin-top: 8px;
            letter-spacing: 0.03em;
        }

        /* Scenario Cards */
        .scenario-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--color-border-light);
            height: 100%;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .scenario-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .scenario-card-body {
            padding: 20px 22px;
        }
        .scenario-card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #0f1d3a;
            margin: 0 0 8px;
        }
        .scenario-card-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* Testimonial */
        .testimonial-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--color-border-light);
            position: relative;
            height: 100%;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .testimonial-card::before {
            content: '"';
            font-size: 4rem;
            color: #e5e5e5;
            position: absolute;
            top: 8px;
            left: 18px;
            line-height: 1;
            font-weight: 900;
            pointer-events: none;
        }
        .testimonial-card p {
            font-size: 0.95rem;
            color: var(--color-text-weak);
            line-height: 1.7;
            margin: 0;
            padding-top: 16px;
            position: relative;
            z-index: 1;
        }
        .testimonial-author {
            font-size: 0.85rem;
            font-weight: 700;
            color: #0f1d3a;
            margin: 0;
        }
        .testimonial-role {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        /* Pricing */
        .pricing-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--color-border-light);
            text-align: center;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            gap: 16px;
            position: relative;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .pricing-card.featured {
            border: 2px solid var(--color-brand);
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            z-index: 1;
        }
        .pricing-card.featured:hover {
            transform: scale(1.03) translateY(-4px);
        }
        .pricing-badge {
            display: inline-block;
            background: #fef3c7;
            color: #b45309;
            padding: 4px 14px;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.03em;
        }
        .pricing-card.featured .pricing-badge {
            background: #dbeafe;
            color: #1d4ed8;
        }
        .pricing-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0f1d3a;
            margin: 0;
        }
        .pricing-price {
            font-size: 2.6rem;
            font-weight: 900;
            color: #0f1d3a;
            line-height: 1;
        }
        .pricing-price small {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text-muted);
        }
        .pricing-features {
            list-style: none;
            padding: 0;
            margin: 0;
            text-align: left;
            flex: 1;
        }
        .pricing-features li {
            padding: 6px 0;
            font-size: 0.88rem;
            color: var(--color-text-weak);
            border-bottom: 1px solid var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .pricing-features li::before {
            content: '✓';
            color: #16a34a;
            font-weight: 700;
            flex-shrink: 0;
        }
        .btn-pricing {
            display: inline-block;
            background: var(--color-brand);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: none;
            text-align: center;
            width: 100%;
        }
        .btn-pricing:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow-lg);
        }
        .pricing-card.featured .btn-pricing {
            background: var(--color-accent);
        }
        .pricing-card.featured .btn-pricing:hover {
            background: var(--color-accent-dark);
        }

        /* FAQ */
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            margin-bottom: 12px;
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
            border-color: #d4d4d8;
        }
        .faq-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #0f1d3a;
            margin: 0 0 8px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .faq-item h4 .faq-icon {
            font-size: 1.3rem;
            color: var(--color-brand);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        .faq-item p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            margin: 0;
            line-height: 1.65;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h3 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-large {
            display: inline-block;
            background: #ffffff;
            color: #1d4ed8;
            padding: 14px 40px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: none;
            position: relative;
            z-index: 1;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .btn-cta-large:hover {
            background: #f0f5ff;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
            transform: translateY(-3px);
        }

        /* Footer */
        .site-footer {
            background: #0f1d3a;
            color: #cbd5e1;
            padding: 48px 0 24px;
            font-size: 0.88rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-footer .footer-col h5 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: #94a3b8;
            transition: color var(--transition-fast);
            font-size: 0.85rem;
        }
        .site-footer .footer-col ul li a:hover {
            color: #ffffff;
        }
        .site-footer .footer-bottom {
            text-align: center;
            padding-top: 32px;
            margin-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
            font-size: 0.8rem;
            color: #94a3b8;
        }
        .site-footer .footer-bottom a {
            color: #94a3b8;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-bottom a:hover {
            color: #ffffff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-coupon-title {
                font-size: 2.2rem;
            }
            .coupon-wall-grid {
                gap: 16px;
            }
            .coupon-card {
                width: 260px;
            }
            .coupon-card.coupon-main {
                width: 310px;
                transform: scale(1.03);
            }
            .coupon-card.coupon-main:hover {
                transform: scale(1.03) translateY(-6px);
            }
            .stats-panel {
                padding: 36px 24px;
                gap: 20px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .hero-coupon-wall {
                padding: 50px 0 60px;
                min-height: auto;
            }
            .hero-coupon-title {
                font-size: 1.7rem;
            }
            .hero-coupon-subtitle {
                font-size: 0.95rem;
                margin-bottom: 28px;
            }
            .coupon-wall-grid {
                flex-direction: column;
                align-items: center;
                gap: 14px;
            }
            .coupon-card {
                width: 100%;
                max-width: 380px;
            }
            .coupon-card.coupon-main {
                width: 100%;
                max-width: 400px;
                transform: scale(1);
                order: -1;
            }
            .coupon-card.coupon-main:hover {
                transform: translateY(-6px);
            }
            .coupon-card-header .coupon-value {
                font-size: 2.4rem;
            }
            .coupon-card.coupon-main .coupon-card-header .coupon-value {
                font-size: 2.8rem;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .mobile-menu-toggle {
                display: block;
            }
            .section-py {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
            .stats-panel {
                flex-direction: column;
                gap: 20px;
                padding: 28px 20px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .pricing-card.featured {
                transform: scale(1);
            }
            .pricing-card.featured:hover {
                transform: translateY(-4px);
            }
            .cta-section {
                padding: 36px 24px;
                border-radius: var(--radius-lg);
            }
            .cta-section h3 {
                font-size: 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .container-custom {
                padding: 0 16px;
            }
            .main-nav .nav-inner {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-coupon-title {
                font-size: 1.4rem;
            }
            .hero-coupon-subtitle {
                font-size: 0.85rem;
            }
            .coupon-card {
                max-width: 100%;
            }
            .coupon-card.coupon-main {
                max-width: 100%;
            }
            .coupon-card-header .coupon-value {
                font-size: 2rem;
            }
            .coupon-card.coupon-main .coupon-card-header .coupon-value {
                font-size: 2.3rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .btn-coupon-claim {
                font-size: 0.88rem;
                padding: 10px 20px;
            }
            .btn-cta-large {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .feature-card {
                padding: 20px 16px;
            }
            .pricing-card {
                padding: 24px 18px;
            }
            .pricing-price {
                font-size: 2rem;
            }
        }

/* roulang page: category4 */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #60a5fa;
            --color-accent: #f97316;
            --color-accent-dark: #ea580c;
            --color-bg: #fafafa;
            --color-surface: #ffffff;
            --color-text: #171717;
            --color-text-weak: #525252;
            --color-text-muted: #737373;
            --color-border: #e5e5e5;
            --color-border-light: #f0f0f0;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Top Info Bar */
        .top-info-bar {
            background: #0f1d3a;
            color: #cbd5e1;
            font-size: 0.8rem;
            padding: 6px 0;
            letter-spacing: 0.02em;
        }
        .top-info-bar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-info-bar a {
            color: #e2e8f0;
            transition: color var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #ffffff;
        }

        /* Main Nav */
        .main-nav {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .main-nav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 20px;
        }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0f1d3a;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--color-brand);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-links a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: #f1f5f9;
            color: var(--color-brand);
        }
        .nav-links a.nav-active {
            background: #eff6ff;
            color: var(--color-brand);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--color-brand) !important;
            color: #ffffff !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            font-weight: 600 !important;
            transition: all var(--transition-fast) !important;
        }
        .nav-cta-btn:hover {
            background: var(--color-brand-dark) !important;
            color: #ffffff !important;
            box-shadow: var(--shadow-md);
        }

        /* Mobile Nav */
        .mobile-menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: #0f1d3a;
            padding: 6px;
            border-radius: var(--radius-sm);
        }
        .mobile-menu-toggle:hover {
            background: #f1f5f9;
        }

        /* Section Spacing */
        .section-py {
            padding: 60px 0;
        }
        .section-py-sm {
            padding: 40px 0;
        }
        .section-py-lg {
            padding: 80px 0;
        }

        /* Hero Section */
        .hero-bg {
            background: linear-gradient(135deg, #0f1d3a 0%, #1a2d50 40%, #1e3a5f 100%);
            position: relative;
            overflow: hidden;
        }
        .hero-bg::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .hero-bg .container-custom {
            position: relative;
            z-index: 1;
        }

        /* Pricing Card */
        .pricing-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 2px solid var(--color-border-light);
            transition: all var(--transition);
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .pricing-card.recommended {
            border-color: var(--color-brand);
            box-shadow: var(--shadow-xl);
            background: #ffffff;
            transform: scale(1.04);
            z-index: 2;
        }
        .pricing-card.recommended:hover {
            transform: scale(1.06);
        }
        .pricing-card .badge-recommend {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-brand);
            color: #fff;
            padding: 5px 18px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            white-space: nowrap;
            letter-spacing: 0.03em;
        }
        .pricing-card .price-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #0f1d3a;
            letter-spacing: -0.02em;
        }
        .pricing-card .price-num small {
            font-size: 0.9rem;
            font-weight: 400;
            color: var(--color-text-muted);
        }
        .pricing-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .pricing-card ul li {
            padding-left: 22px;
            position: relative;
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.5;
        }
        .pricing-card ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            color: #10b981;
            font-weight: 700;
            font-size: 0.85rem;
        }
        .btn-primary {
            display: inline-block;
            background: var(--color-brand);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--color-brand);
            border: 2px solid var(--color-brand);
            padding: 10px 26px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            text-align: center;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: var(--color-brand);
            color: #ffffff;
            box-shadow: var(--shadow-md);
        }
        .btn-accent {
            display: inline-block;
            background: var(--color-accent);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            text-align: center;
            white-space: nowrap;
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .btn-white {
            display: inline-block;
            background: #ffffff;
            color: var(--color-brand);
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            text-align: center;
            white-space: nowrap;
        }
        .btn-white:hover {
            background: #f1f5f9;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        /* Stat Card */
        .stat-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .stat-card .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-brand);
            letter-spacing: -0.03em;
            line-height: 1.1;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        /* Feature Card */
        .feature-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
            height: 100%;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-brand-light);
        }
        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            background: #eff6ff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        .feature-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #0f1d3a;
            margin: 0;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            margin: 0;
            line-height: 1.6;
        }

        /* Scenario Card */
        .scenario-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            height: 100%;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .scenario-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .scenario-card .scenario-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .scenario-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #0f1d3a;
            margin: 0;
        }
        .scenario-card p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            margin: 0;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius);
            border: 1px solid var(--color-border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-brand-light);
        }
        .faq-question {
            padding: 18px 20px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.98rem;
            color: #0f1d3a;
            user-select: none;
            background: #fafbfc;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: #f1f5f9;
        }
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition);
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            padding: 0 20px 18px 20px;
            max-height: 500px;
        }
        .faq-item.open .faq-question {
            background: #eff6ff;
            color: var(--color-brand);
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #1a2d50 0%, #0f1d3a 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: #0f1d3a;
            color: #cbd5e1;
            padding: 48px 0 24px;
            font-size: 0.88rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer h5 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer ul li a {
            color: #94a3b8;
            transition: color var(--transition-fast);
            font-size: 0.85rem;
        }
        .site-footer ul li a:hover {
            color: #ffffff;
        }
        .site-footer .footer-bottom {
            text-align: center;
            border-top: 1px solid #1e3a5f;
            padding-top: 20px;
            color: #94a3b8;
            font-size: 0.82rem;
        }
        .site-footer .footer-bottom a {
            color: #cbd5e1;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-bottom a:hover {
            color: #ffffff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .section-py {
                padding: 48px 0;
            }
            .section-py-lg {
                padding: 60px 0;
            }
            .pricing-card.recommended {
                transform: scale(1.02);
            }
            .pricing-card.recommended:hover {
                transform: scale(1.03);
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .section-py {
                padding: 36px 0;
            }
            .section-py-lg {
                padding: 48px 0;
            }
            .section-py-sm {
                padding: 28px 0;
            }
            .pricing-card.recommended {
                transform: scale(1);
            }
            .pricing-card.recommended:hover {
                transform: scale(1.01);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .hero-bg {
                padding: 40px 0 48px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 1.2rem;
            }
            .section-py {
                padding: 28px 0;
            }
            .section-py-lg {
                padding: 36px 0;
            }
            .pricing-card {
                padding: 20px 16px;
            }
            .pricing-card .price-num {
                font-size: 1.8rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat-card .stat-number {
                font-size: 1.6rem;
            }
            .btn-primary,
            .btn-accent,
            .btn-outline,
            .btn-white {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
        }

/* roulang page: category6 */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #60a5fa;
            --color-accent: #f97316;
            --color-accent-dark: #ea580c;
            --color-bg: #fafafa;
            --color-surface: #ffffff;
            --color-text: #171717;
            --color-text-weak: #525252;
            --color-text-muted: #737373;
            --color-border: #e5e5e5;
            --color-border-light: #f0f0f0;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --color-info: #06b6d4;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .top-info-bar {
            background: #0f1d3a;
            color: #cbd5e1;
            font-size: 0.8rem;
            padding: 6px 0;
            text-align: center;
            letter-spacing: 0.02em;
        }
        .top-info-bar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-info-bar a {
            color: #e2e8f0;
            transition: color var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #ffffff;
        }

        .main-nav {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .main-nav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 20px;
        }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0f1d3a;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--color-brand);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-links a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: #f1f5f9;
            color: var(--color-brand);
        }
        .nav-links a.nav-active {
            background: #eff6ff;
            color: var(--color-brand);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--color-brand) !important;
            color: #ffffff !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            font-weight: 600 !important;
            transition: all var(--transition-fast) !important;
        }
        .nav-cta-btn:hover {
            background: var(--color-brand-dark) !important;
            color: #ffffff !important;
            box-shadow: var(--shadow-md);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: #0f1d3a;
            padding: 6px;
            border-radius: var(--radius-sm);
        }
        .mobile-menu-toggle:hover {
            background: #f1f5f9;
        }

        .section-py {
            padding: 60px 0;
        }
        .section-py-sm {
            padding: 40px 0;
        }
        .section-py-lg {
            padding: 80px 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-brand);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 25px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            box-shadow: var(--shadow);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--color-brand);
            padding: 11px 26px;
            border-radius: 25px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--color-brand);
            transition: all var(--transition);
            cursor: pointer;
        }
        .btn-outline:hover {
            background: var(--color-brand);
            color: #ffffff;
            box-shadow: var(--shadow-md);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 25px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            box-shadow: var(--shadow);
            border: none;
            cursor: pointer;
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .card-base {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card-base:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .badge-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-blue {
            background: #eff6ff;
            color: var(--color-brand);
        }
        .badge-orange {
            background: #fff7ed;
            color: var(--color-accent);
        }
        .badge-green {
            background: #ecfdf5;
            color: var(--color-success);
        }
        .badge-purple {
            background: #f5f3ff;
            color: #7c3aed;
        }

        .progress-bar-wrapper {
            background: #e5e7eb;
            border-radius: 20px;
            height: 14px;
            overflow: hidden;
            position: relative;
        }
        .progress-bar-fill {
            height: 100%;
            border-radius: 20px;
            background: linear-gradient(90deg, #2563eb, #60a5fa);
            transition: width 0.6s ease;
            position: relative;
        }
        .progress-bar-fill::after {
            content: '';
            position: absolute;
            right: 0;
            top: 0;
            width: 20px;
            height: 100%;
            background: rgba(255, 255, 255, 0.4);
            border-radius: 50%;
        }
        .milestone-dot {
            position: absolute;
            top: 50%;
            transform: translate(-50%, -50%);
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: #ffffff;
            border: 3px solid #d1d5db;
            z-index: 2;
            transition: all var(--transition);
        }
        .milestone-dot.reached {
            border-color: var(--color-brand);
            background: #eff6ff;
            box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.15);
        }

        .testimonial-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow);
            position: relative;
            border-left: 4px solid var(--color-brand);
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-lg);
        }
        .testimonial-card::before {
            content: '\201C';
            font-size: 4rem;
            color: #e5e7eb;
            position: absolute;
            top: 10px;
            left: 16px;
            line-height: 1;
            font-family: Georgia, serif;
            pointer-events: none;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 18px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            background: #fafbfc;
            padding-left: 8px;
            border-radius: var(--radius-sm);
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .faq-answer {
            margin-top: 10px;
            color: var(--color-text-weak);
            font-size: 0.95rem;
            line-height: 1.75;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--color-brand);
        }
        .faq-icon {
            transition: transform var(--transition-fast);
            color: var(--color-text-muted);
            flex-shrink: 0;
        }

        .site-footer {
            background: #0f1d3a;
            color: #cbd5e1;
            padding: 50px 0 30px;
            font-size: 0.9rem;
        }
        .site-footer h5 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: #94a3b8;
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }
        .site-footer ul li a:hover {
            color: #ffffff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 36px;
            padding-top: 24px;
            text-align: center;
            font-size: 0.82rem;
            color: #94a3b8;
        }
        .footer-bottom a {
            color: #cbd5e1;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #ffffff;
        }

        .invite-hero-overlay {
            background: linear-gradient(135deg, rgba(15, 29, 58, 0.88) 0%, rgba(30, 58, 138, 0.82) 50%, rgba(37, 99, 235, 0.75) 100%);
            position: absolute;
            inset: 0;
            z-index: 1;
        }
        .invite-hero-content {
            position: relative;
            z-index: 2;
        }

        .pricing-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 2px solid transparent;
            position: relative;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-4px);
        }
        .pricing-card.featured {
            border-color: var(--color-brand);
            box-shadow: var(--shadow-lg);
            background: #fafeff;
        }
        .pricing-card.featured::before {
            content: '最受欢迎';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-brand);
            color: #ffffff;
            padding: 4px 18px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        @media (max-width: 1024px) {
            .container-custom {
                padding: 0 16px;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .section-py {
                padding: 40px 0;
            }
            .section-py-lg {
                padding: 56px 0;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .section-py {
                padding: 32px 0;
            }
            .section-py-lg {
                padding: 44px 0;
            }
            .container-custom {
                padding: 0 14px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .nav-logo {
                font-size: 1.25rem;
            }
            .main-nav .nav-inner {
                height: 52px;
            }
            .section-py {
                padding: 24px 0;
            }
            .section-py-lg {
                padding: 36px 0;
            }
            .pricing-card {
                padding: 24px 16px;
            }
            .btn-primary,
            .btn-accent,
            .btn-outline {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
        }

        .glow-dot {
            animation: pulse-glow 2s ease-in-out infinite;
        }
        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4);
            }
            50% {
                box-shadow: 0 0 0 16px rgba(37, 99, 235, 0);
            }
        }
        .float-anim {
            animation: float-up 3s ease-in-out infinite;
        }
        @keyframes float-up {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }

/* roulang page: category5 */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #60a5fa;
            --color-accent: #f97316;
            --color-accent-dark: #ea580c;
            --color-bg: #fafafa;
            --color-surface: #ffffff;
            --color-text: #171717;
            --color-text-weak: #525252;
            --color-text-muted: #737373;
            --color-border: #e5e5e5;
            --color-border-light: #f0f0f0;
            --color-flash: #dc2626;
            --color-flash-bg: #fef2f2;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Top Info Bar */
        .top-info-bar {
            background: #0f1d3a;
            color: #e2e8f0;
            font-size: 0.8rem;
            padding: 8px 0;
            text-align: center;
        }
        .top-info-bar .inner {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .top-info-bar a {
            color: #e2e8f0;
            transition: color var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #ffffff;
        }
        .top-info-bar .flash-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: #ef4444;
            border-radius: 50%;
            animation: pulse-dot 1.2s infinite;
            margin-right: 6px;
            vertical-align: middle;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(1.6);
            }
        }

        /* Main Nav */
        .main-nav {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .main-nav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 20px;
        }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0f1d3a;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--color-brand);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-links a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: #f1f5f9;
            color: var(--color-brand);
        }
        .nav-links a.nav-active {
            background: #eff6ff;
            color: var(--color-brand);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--color-brand) !important;
            color: #ffffff !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            font-weight: 600 !important;
            transition: all var(--transition-fast) !important;
        }
        .nav-cta-btn:hover {
            background: var(--color-brand-dark) !important;
            color: #ffffff !important;
            box-shadow: var(--shadow-md);
        }

        /* Mobile Nav */
        .mobile-menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: #0f1d3a;
            padding: 6px;
            border-radius: var(--radius-sm);
        }
        .mobile-menu-toggle:hover {
            background: #f1f5f9;
        }

        /* Section Spacing */
        .section-py {
            padding: 60px 0;
        }
        .section-py-sm {
            padding: 40px 0;
        }

        /* Flash Sale Hero */
        .flash-hero {
            background: linear-gradient(135deg, #0f1d3a 0%, #1a2d4a 30%, #1e3a5f 60%, #0f1d3a 100%);
            position: relative;
            overflow: hidden;
            padding: 50px 0 60px;
            color: #ffffff;
        }
        .flash-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .flash-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .flash-hero .flash-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-flash-bg);
            color: var(--color-flash);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 10px 20px;
            border-radius: 30px;
            animation: flash-pulse 2s ease-in-out infinite;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        @keyframes flash-pulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.5);
            }
            50% {
                box-shadow: 0 0 0 16px rgba(220, 38, 38, 0);
            }
        }
        .flash-hero .countdown-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
            margin-bottom: 16px;
        }
        .flash-hero .countdown-item {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius);
            padding: 10px 16px;
            text-align: center;
            min-width: 56px;
        }
        .flash-hero .countdown-num {
            font-size: 1.8rem;
            font-weight: 800;
            line-height: 1;
            color: #ffffff;
        }
        .flash-hero .countdown-label {
            font-size: 0.7rem;
            color: #cbd5e1;
            margin-top: 2px;
        }
        .flash-hero .countdown-sep {
            font-size: 1.5rem;
            font-weight: 700;
            color: #f97316;
        }
        .flash-hero .hero-title {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            position: relative;
            z-index: 1;
            margin-bottom: 12px;
        }
        .flash-hero .hero-title .highlight {
            color: #f97316;
            text-shadow: 0 0 30px rgba(249, 115, 22, 0.5);
        }
        .flash-hero .hero-subtitle {
            font-size: 1.1rem;
            color: #cbd5e1;
            position: relative;
            z-index: 1;
            margin-bottom: 24px;
            max-width: 550px;
            line-height: 1.6;
        }
        .flash-product-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 28px;
            color: var(--color-text);
            box-shadow: var(--shadow-xl);
            position: relative;
            z-index: 1;
            border: 2px solid #f97316;
            max-width: 420px;
        }
        .flash-product-card .original-price {
            text-decoration: line-through;
            color: #9ca3af;
            font-size: 1rem;
        }
        .flash-product-card .flash-price {
            font-size: 2.4rem;
            font-weight: 800;
            color: #dc2626;
            line-height: 1;
        }
        .flash-product-card .flash-price-unit {
            font-size: 0.9rem;
            color: #6b7280;
            font-weight: 400;
        }
        .flash-product-card .stock-bar {
            background: #f3f4f6;
            border-radius: 20px;
            height: 8px;
            overflow: hidden;
            margin: 12px 0;
        }
        .flash-product-card .stock-bar-fill {
            background: linear-gradient(90deg, #ef4444, #f97316);
            height: 100%;
            border-radius: 20px;
            width: 28%;
            transition: width 1s ease;
        }
        .btn-flash {
            display: inline-block;
            background: linear-gradient(135deg, #dc2626, #f97316);
            color: #ffffff;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 32px;
            border-radius: 30px;
            transition: all var(--transition);
            box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .btn-flash:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(220, 38, 38, 0.55);
            color: #ffffff;
        }
        .btn-flash:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(220, 38, 38, 0.35);
        }

        /* Value Proposition */
        .value-prop-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            height: 100%;
        }
        .value-prop-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .value-prop-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .icon-blue {
            background: #eff6ff;
            color: #2563eb;
        }
        .icon-orange {
            background: #fff7ed;
            color: #f97316;
        }
        .icon-green {
            background: #f0fdf4;
            color: #16a34a;
        }
        .icon-purple {
            background: #faf5ff;
            color: #7c3aed;
        }
        .icon-cyan {
            background: #ecfeff;
            color: #0891b2;
        }
        .icon-rose {
            background: #fff1f2;
            color: #e11d48;
        }

        /* Feature Section */
        .feature-block {
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }
        .feature-block.reverse {
            flex-direction: row-reverse;
        }
        .feature-block .feature-img-wrap {
            flex: 1;
            min-width: 300px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .feature-block .feature-img-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16/10;
        }
        .feature-block .feature-content {
            flex: 1;
            min-width: 280px;
        }

        /* Scenario Cards */
        .scenario-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow);
            border-left: 4px solid var(--color-brand);
            transition: all var(--transition);
            height: 100%;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            border-left-color: var(--color-accent);
        }
        .scenario-card .scenario-tag {
            display: inline-block;
            background: #eff6ff;
            color: #2563eb;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }

        /* Pricing */
        .pricing-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 32px 24px;
            box-shadow: var(--shadow);
            border: 2px solid var(--color-border-light);
            transition: all var(--transition);
            text-align: center;
            position: relative;
            height: 100%;
        }
        .pricing-card.featured {
            border-color: #f97316;
            box-shadow: var(--shadow-xl);
            transform: scale(1.03);
            z-index: 2;
        }
        .pricing-card.featured .popular-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, #f97316, #dc2626);
            color: #fff;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 6px 18px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .pricing-card .price-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: #0f1d3a;
            line-height: 1;
        }
        .pricing-card .price-period {
            color: #9ca3af;
            font-size: 0.9rem;
        }
        .pricing-card ul {
            list-style: none;
            padding: 0;
            margin: 20px 0;
            text-align: left;
        }
        .pricing-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f3f4f6;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .pricing-card ul li i {
            color: #16a34a;
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .btn-pricing {
            display: inline-block;
            background: var(--color-brand);
            color: #fff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 30px;
            transition: all var(--transition);
            width: 100%;
            text-align: center;
        }
        .btn-pricing:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow-md);
            color: #fff;
        }
        .btn-pricing-featured {
            background: linear-gradient(135deg, #dc2626, #f97316);
        }
        .btn-pricing-featured:hover {
            background: linear-gradient(135deg, #b91c1c, #ea580c);
            box-shadow: 0 8px 24px rgba(220, 38, 38, 0.4);
            color: #fff;
        }

        /* FAQ */
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius);
            border: 1px solid var(--color-border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            font-size: 1rem;
            color: #0f1d3a;
        }
        .faq-question i {
            transition: transform var(--transition);
            color: #9ca3af;
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-brand);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition);
            padding: 0 22px;
            color: var(--color-text-weak);
            line-height: 1.7;
            font-size: 0.93rem;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #0f1d3a 0%, #1e3a5f 100%);
            color: #ffffff;
            text-align: center;
            border-radius: var(--radius-xl);
            padding: 50px 30px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -15%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.3) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .btn-cta-lg {
            display: inline-block;
            background: #ffffff;
            color: #0f1d3a;
            font-weight: 700;
            font-size: 1.1rem;
            padding: 14px 36px;
            border-radius: 30px;
            transition: all var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-cta-lg:hover {
            background: #f97316;
            color: #ffffff;
            transform: translateY(-3px);
            box-shadow: 0 14px 32px rgba(249, 115, 22, 0.45);
        }

        /* Testimonial */
        .testimonial-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--color-border-light);
            height: 100%;
        }
        .testimonial-card .stars {
            color: #f59e0b;
            margin-bottom: 10px;
            font-size: 0.9rem;
        }
        .testimonial-card .avatar-placeholder {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: #e5e7eb;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #6b7280;
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: #0f1d3a;
            color: #cbd5e1;
            padding: 50px 0 30px;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 30px;
        }
        .site-footer h5 {
            color: #ffffff;
            font-weight: 700;
            margin-bottom: 14px;
            font-size: 1rem;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: #94a3b8;
            transition: color var(--transition-fast);
        }
        .site-footer ul li a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 24px;
            color: #94a3b8;
            font-size: 0.82rem;
        }
        .footer-bottom a {
            color: #94a3b8;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #ffffff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flash-hero .hero-title {
                font-size: 2rem;
            }
            .feature-block {
                gap: 24px;
            }
            .pricing-card.featured {
                transform: scale(1);
            }
        }

        @media (max-width: 768px) {
            .section-py {
                padding: 40px 0;
            }
            .container-custom {
                padding: 0 16px;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .flash-hero .hero-title {
                font-size: 1.6rem;
            }
            .flash-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .flash-product-card {
                max-width: 100%;
                padding: 20px;
            }
            .flash-product-card .flash-price {
                font-size: 1.8rem;
            }
            .feature-block {
                flex-direction: column !important;
            }
            .feature-block .feature-img-wrap {
                min-width: 100%;
            }
            .feature-block .feature-content {
                min-width: 100%;
            }
            .pricing-card.featured {
                transform: scale(1);
            }
            .cta-section {
                padding: 32px 18px;
                border-radius: var(--radius-lg);
            }
            .flash-hero .countdown-num {
                font-size: 1.3rem;
            }
            .flash-hero .countdown-item {
                padding: 8px 10px;
                min-width: 44px;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 1.2rem;
            }
            .flash-hero {
                padding: 30px 0 40px;
            }
            .flash-hero .hero-title {
                font-size: 1.35rem;
            }
            .flash-hero .countdown-num {
                font-size: 1.1rem;
            }
            .flash-hero .countdown-item {
                padding: 6px 8px;
                min-width: 36px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .flash-product-card {
                padding: 16px;
            }
            .flash-product-card .flash-price {
                font-size: 1.5rem;
            }
        }

/* roulang page: category7 */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #60a5fa;
            --color-accent: #f97316;
            --color-accent-dark: #ea580c;
            --color-bg: #fafafa;
            --color-surface: #ffffff;
            --color-text: #171717;
            --color-text-weak: #525252;
            --color-text-muted: #737373;
            --color-border: #e5e5e5;
            --color-border-light: #f0f0f0;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .top-info-bar {
            background: #0f1d3a;
            color: #cbd5e1;
            font-size: 0.8rem;
            padding: 6px 0;
            text-align: center;
        }

        .top-info-bar a {
            color: #e2e8f0;
            transition: color var(--transition-fast);
        }

        .top-info-bar a:hover {
            color: #ffffff;
        }

        .main-nav {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

        .main-nav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 20px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0f1d3a;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-logo span {
            color: var(--color-brand);
        }

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

        .nav-links a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links a:hover {
            background: #f1f5f9;
            color: var(--color-brand);
        }

        .nav-links a.nav-active {
            background: #eff6ff;
            color: var(--color-brand);
            font-weight: 600;
        }

        .nav-cta-btn {
            background: var(--color-brand) !important;
            color: #ffffff !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            font-weight: 600 !important;
            transition: all var(--transition-fast) !important;
        }

        .nav-cta-btn:hover {
            background: var(--color-brand-dark) !important;
            color: #ffffff !important;
            box-shadow: var(--shadow-md);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: #0f1d3a;
            padding: 6px;
            border-radius: var(--radius-sm);
        }

        .mobile-menu-toggle:hover {
            background: #f1f5f9;
        }

        .section-py {
            padding: 60px 0;
        }

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

        .section-py-lg {
            padding: 80px 0;
        }

        .btn-primary {
            display: inline-block;
            background: var(--color-brand);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
        }

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

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--color-brand);
            padding: 11px 26px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 2px solid var(--color-brand);
            transition: all var(--transition);
            cursor: pointer;
            text-align: center;
        }

        .btn-outline:hover {
            background: var(--color-brand);
            color: #ffffff;
            box-shadow: var(--shadow-md);
        }

        .btn-accent {
            display: inline-block;
            background: var(--color-accent);
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
        }

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

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

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

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .badge-brand {
            background: #eff6ff;
            color: var(--color-brand);
        }

        .badge-accent {
            background: #fff7ed;
            color: var(--color-accent);
        }

        .badge-success {
            background: #ecfdf5;
            color: #059669;
        }

        .site-footer {
            background: #0f1d3a;
            color: #cbd5e1;
            padding: 50px 0 30px;
            font-size: 0.9rem;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 30px;
        }

        .site-footer .footer-col h5 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

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

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

        .site-footer .footer-col ul li a {
            color: #94a3b8;
            transition: color var(--transition-fast);
            font-size: 0.85rem;
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #94a3b8;
        }

        .site-footer .footer-bottom a {
            color: #cbd5e1;
            transition: color var(--transition-fast);
        }

        .site-footer .footer-bottom a:hover {
            color: #ffffff;
        }

        .hero-play-btn {
            width: 90px;
            height: 90px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
            border: 3px solid rgba(255, 255, 255, 0.8);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition);
            position: relative;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .hero-play-btn:hover {
            background: rgba(255, 255, 255, 0.35);
            border-color: #ffffff;
            transform: scale(1.08);
            box-shadow: 0 0 40px rgba(255, 255, 255, 0.3);
        }

        .hero-play-btn::after {
            content: '';
            display: block;
            width: 0;
            height: 0;
            border-style: solid;
            border-width: 16px 0 16px 28px;
            border-color: transparent transparent transparent #ffffff;
            margin-left: 5px;
            filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
        }

        .section-dark {
            background: #0f1d3a;
            color: #e2e8f0;
        }

        .section-dark .card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #e2e8f0;
        }

        .section-light-alt {
            background: #f1f5f9;
        }

        .gradient-text {
            background: linear-gradient(135deg, #2563eb, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .pricing-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            box-shadow: var(--shadow-md);
            border: 2px solid var(--color-border-light);
            transition: all var(--transition);
            position: relative;
            text-align: center;
        }

        .pricing-card.featured {
            border-color: var(--color-brand);
            box-shadow: var(--shadow-xl);
            transform: scale(1.03);
            z-index: 2;
            background: #ffffff;
        }

        .pricing-card.featured::before {
            content: '推荐';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-brand);
            color: #ffffff;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

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

        .pricing-card.featured:hover {
            transform: scale(1.04) translateY(-2px);
        }

        .check-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .check-list li {
            padding: 6px 0 6px 28px;
            position: relative;
            font-size: 0.9rem;
            color: var(--color-text-weak);
        }

        .check-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 6px;
            color: #10b981;
            font-weight: 700;
            font-size: 0.85rem;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 18px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

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

        .faq-item .faq-question {
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .faq-item .faq-answer {
            margin-top: 10px;
            color: var(--color-text-weak);
            font-size: 0.9rem;
            line-height: 1.7;
            display: none;
        }

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

        .faq-item .faq-icon {
            font-size: 0.8rem;
            transition: transform var(--transition-fast);
            color: var(--color-text-muted);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--color-brand);
        }

        .stat-block {
            text-align: center;
            padding: 20px;
        }

        .stat-block .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--color-brand);
            line-height: 1.2;
        }

        .stat-block .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        @media (max-width: 1024px) {
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .section-py {
                padding: 40px 0;
            }
            .section-py-lg {
                padding: 50px 0;
            }
            .pricing-card.featured {
                transform: scale(1.01);
            }
            .pricing-card.featured:hover {
                transform: scale(1.02) translateY(-2px);
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .nav-cta-btn {
                text-align: center;
                width: 100%;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .section-py {
                padding: 32px 0;
            }
            .section-py-lg {
                padding: 40px 0;
            }
            .container-custom {
                padding: 0 16px;
            }
            .hero-play-btn {
                width: 70px;
                height: 70px;
            }
            .hero-play-btn::after {
                border-width: 12px 0 12px 21px;
            }
            .pricing-card.featured {
                transform: scale(1);
            }
            .pricing-card.featured:hover {
                transform: scale(1.01) translateY(-2px);
            }
            .stat-block .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .nav-logo {
                font-size: 1.25rem;
            }
            .main-nav .nav-inner {
                height: 52px;
                padding: 0 12px;
            }
            .section-py {
                padding: 24px 0;
            }
            .section-py-lg {
                padding: 32px 0;
            }
            .hero-play-btn {
                width: 56px;
                height: 56px;
            }
            .hero-play-btn::after {
                border-width: 10px 0 10px 17px;
            }
            .pricing-card {
                padding: 20px 16px;
            }
            .card {
                padding: 20px 16px;
            }
        }

@keyframes bounceDown {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }