/* roulang page: index */
:root {
            --bg-primary: #0B0E13;
            --bg-secondary: #11161E;
            --bg-card: #151C26;
            --bg-card-hover: #1A2432;
            --bg-dark-footer: #070A0E;
            --text-primary: #F0F2F5;
            --text-secondary: #A8B3BE;
            --text-muted: #6E7B88;
            --neon-red: #E8343A;
            --neon-red-bright: #FF4A52;
            --neon-red-dim: rgba(232, 52, 58, 0.18);
            --warm-gold: #D4A444;
            --warm-gold-bright: #E8B95A;
            --warm-gold-dim: rgba(212, 164, 68, 0.16);
            --cool-gray: #8A9BA8;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-gold: rgba(212, 164, 68, 0.35);
            --border-red: rgba(232, 52, 58, 0.4);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 10px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(232, 52, 58, 0.4);
            --shadow-gold-glow: 0 0 24px rgba(212, 164, 68, 0.35);
            --shadow-red-glow: 0 0 20px rgba(232, 52, 58, 0.4);
            --spacing-section: 72px;
            --spacing-mobile: 44px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s ease;
        }

        * {
            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', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--neon-red-bright);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--warm-gold);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

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

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 14px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 780px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 5px 16px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .neon-line-top {
            height: 3px;
            background: linear-gradient(90deg, var(--neon-red), var(--warm-gold), var(--neon-red));
            position: relative;
            z-index: 1001;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 10, 14, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            min-height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .navbar {
            padding: 0;
            min-height: 68px;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .site-header .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--neon-red), #B81E24);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: var(--shadow-red-glow);
            flex-shrink: 0;
        }

        .site-header .navbar-brand span {
            color: var(--text-primary);
            font-size: 22px;
            font-weight: 700;
        }

        .site-header .nav-link {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 24px 14px !important;
            position: relative;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--neon-red);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0.3);
            transition: opacity 0.25s ease, transform 0.25s ease;
            box-shadow: 0 0 12px rgba(232, 52, 58, 0.6);
        }

        .site-header .nav-link:hover {
            color: #fff;
        }

        .site-header .nav-link:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .site-header .nav-link.active {
            color: #fff;
            text-shadow: 0 0 16px rgba(232, 52, 58, 0.5);
        }

        .site-header .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
            background: var(--neon-red-bright);
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--neon-red), #C21E24);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border-radius: 50px;
            padding: 10px 22px;
            border: none;
            transition: all var(--transition-base);
            box-shadow: 0 0 16px rgba(232, 52, 58, 0.3);
            white-space: nowrap;
            letter-spacing: 0.03em;
        }

        .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--neon-red-bright), #D82A30);
            color: #fff;
            box-shadow: 0 0 28px rgba(232, 52, 58, 0.55);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid var(--border-subtle);
            background: var(--bg-card);
            color: var(--text-primary);
            width: 44px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            transition: all var(--transition-fast);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(232, 52, 58, 0.35);
            outline: none;
        }

        .navbar-toggler:hover {
            border-color: var(--border-red);
            background: var(--bg-card-hover);
        }

        /* Mobile nav drawer */
        @media (max-width: 991px) {
            .site-header .navbar-collapse {
                background: rgba(7, 10, 14, 0.98);
                border-top: 1px solid var(--border-subtle);
                margin-top: 10px;
                padding: 16px 8px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .site-header .nav-link {
                padding: 14px 18px !important;
                font-size: 17px;
            }
            .site-header .nav-link::after {
                bottom: 6px;
                left: 18px;
                right: 18px;
            }
            .nav-cta-btn {
                margin: 10px 18px 6px;
                display: block;
                text-align: center;
            }
        }

        /* Hero */
        .hero-section {
            padding: 72px 0 68px;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(232, 52, 58, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 70%, rgba(212, 164, 68, 0.06) 0%, transparent 50%),
                var(--bg-primary);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }

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

        .hero-title {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }

        .hero-title .highlight-red {
            color: var(--neon-red-bright);
            text-shadow: 0 0 28px rgba(232, 52, 58, 0.45);
        }

        .hero-title .highlight-gold {
            color: var(--warm-gold-bright);
            text-shadow: 0 0 24px rgba(212, 164, 68, 0.4);
        }

        .hero-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 580px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, var(--neon-red), #C21E24);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            border-radius: 50px;
            padding: 13px 32px;
            border: none;
            transition: all var(--transition-base);
            box-shadow: 0 0 20px rgba(232, 52, 58, 0.35);
            letter-spacing: 0.02em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-custom:hover {
            background: linear-gradient(135deg, var(--neon-red-bright), #D82A30);
            color: #fff;
            box-shadow: 0 0 36px rgba(232, 52, 58, 0.6);
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 16px;
            border-radius: 50px;
            padding: 13px 32px;
            border: 1.5px solid var(--border-subtle);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-custom:hover {
            border-color: var(--neon-red);
            color: var(--neon-red-bright);
            background: rgba(232, 52, 58, 0.07);
            transform: translateY(-2px);
        }

        .btn-ghost-custom {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            font-weight: 500;
            font-size: 15px;
            border-radius: 50px;
            padding: 12px 28px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-ghost-custom:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.3);
        }

        .hero-data-points {
            display: flex;
            flex-wrap: wrap;
            gap: 26px;
            margin-top: 8px;
        }

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

        .hero-data-number {
            font-size: 26px;
            font-weight: 700;
            color: var(--warm-gold-bright);
            font-family: 'Courier New', monospace;
            letter-spacing: 0.02em;
        }

        .hero-data-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .hero-visual-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            box-shadow: var(--shadow-card);
            position: relative;
            z-index: 2;
        }

        .hero-visual-card .card-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: linear-gradient(135deg, var(--warm-gold), #B8892E);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 12px;
            border-radius: 50px;
            padding: 5px 16px;
            box-shadow: var(--shadow-gold-glow);
            letter-spacing: 0.05em;
        }

        .hero-visual-card .card-title-sm {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .hero-visual-card .card-desc-sm {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .hero-visual-card .card-feature-list {
            list-style: none;
            padding: 0;
            margin-bottom: 18px;
        }

        .hero-visual-card .card-feature-list li {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 5px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-visual-card .card-feature-list li i {
            color: var(--warm-gold);
            font-size: 14px;
        }

        /* Trust bar */
        .trust-bar {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 22px 0;
        }

        .trust-bar-item {
            display: flex;
            align-items: center;
            gap: 12px;
            justify-content: center;
            padding: 6px 10px;
        }

        .trust-bar-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--bg-card);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
            border: 1px solid var(--border-subtle);
        }

        .trust-bar-icon.red {
            color: var(--neon-red-bright);
        }
        .trust-bar-icon.gold {
            color: var(--warm-gold-bright);
        }
        .trust-bar-icon.gray {
            color: var(--cool-gray);
        }

        .trust-bar-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .trust-bar-text strong {
            color: var(--text-primary);
            font-weight: 600;
            display: block;
            font-size: 15px;
        }

        /* Feature compare table */
        .feature-compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
        }

        .feature-compare-table thead th {
            background: var(--bg-card-hover);
            color: var(--text-primary);
            font-weight: 700;
            font-size: 14px;
            padding: 16px 18px;
            text-align: left;
            border-bottom: 2px solid var(--border-red);
            letter-spacing: 0.03em;
        }

        .feature-compare-table thead th:nth-child(2),
        .feature-compare-table thead th:nth-child(3),
        .feature-compare-table thead th:nth-child(4) {
            text-align: center;
        }

        .feature-compare-table tbody td {
            padding: 14px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-subtle);
            line-height: 1.6;
        }

        .feature-compare-table tbody td:first-child {
            font-weight: 600;
            color: var(--text-primary);
        }

        .feature-compare-table tbody td:nth-child(2),
        .feature-compare-table tbody td:nth-child(3),
        .feature-compare-table tbody td:nth-child(4) {
            text-align: center;
        }

        .feature-compare-table tbody tr:last-child td {
            border-bottom: none;
        }

        .feature-compare-table tbody tr:hover td {
            background: var(--bg-card-hover);
        }

        .check-icon {
            color: var(--warm-gold);
            font-size: 16px;
        }
        .dash-icon {
            color: var(--text-muted);
            font-size: 14px;
        }

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

        .pricing-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition-base);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .pricing-card:hover {
            border-color: var(--border-subtle);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .pricing-card.highlighted {
            border-color: var(--border-red);
            box-shadow: 0 0 32px rgba(232, 52, 58, 0.2), var(--shadow-card);
            background: linear-gradient(180deg, rgba(232, 52, 58, 0.06) 0%, var(--bg-card) 30%);
        }

        .pricing-card .recommend-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, var(--neon-red), #C21E24);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.08em;
            padding: 6px 20px;
            border-radius: 50px;
            box-shadow: var(--shadow-red-glow);
            white-space: nowrap;
        }

        .pricing-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .pricing-price {
            font-size: 36px;
            font-weight: 700;
            color: var(--warm-gold-bright);
            font-family: 'Courier New', monospace;
            letter-spacing: 0.02em;
            margin-bottom: 4px;
        }

        .pricing-price .unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
        }

        .pricing-period {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 18px;
        }

        .pricing-features {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            flex: 1;
        }

        .pricing-features li {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 6px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.6;
        }

        .pricing-features li i {
            color: var(--warm-gold);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .pricing-features li.muted-feature {
            color: var(--text-muted);
        }
        .pricing-features li.muted-feature i {
            color: var(--text-muted);
        }

        .btn-pricing {
            display: block;
            width: 100%;
            text-align: center;
            font-weight: 600;
            font-size: 15px;
            border-radius: 50px;
            padding: 12px 20px;
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            border: none;
        }

        .btn-pricing.primary {
            background: linear-gradient(135deg, var(--neon-red), #C21E24);
            color: #fff;
            box-shadow: 0 0 18px rgba(232, 52, 58, 0.3);
        }
        .btn-pricing.primary:hover {
            background: linear-gradient(135deg, var(--neon-red-bright), #D82A30);
            box-shadow: 0 0 30px rgba(232, 52, 58, 0.5);
            transform: translateY(-1px);
        }
        .btn-pricing.secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid var(--border-subtle);
        }
        .btn-pricing.secondary:hover {
            border-color: var(--neon-red);
            color: var(--neon-red-bright);
            background: rgba(232, 52, 58, 0.06);
        }

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

        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .scenario-card .scenario-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .scenario-card .scenario-icon {
            width: 42px;
            height: 42px;
            border-radius: 8px;
            background: var(--bg-card-hover);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
            border: 1px solid var(--border-subtle);
        }
        .scenario-card .scenario-icon.red {
            color: var(--neon-red-bright);
        }
        .scenario-card .scenario-icon.gold {
            color: var(--warm-gold-bright);
        }

        .scenario-card .scenario-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .scenario-card .scenario-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }

        .scenario-card .scenario-steps {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .scenario-card .scenario-steps li {
            font-size: 13px;
            color: var(--text-muted);
            padding: 4px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .scenario-card .scenario-steps li i {
            color: var(--cool-gray);
            font-size: 12px;
        }

        /* Getting started */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step-counter;
        }

        .step-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            position: relative;
            transition: all var(--transition-base);
            counter-increment: step-counter;
        }

        .step-item:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold-glow);
            transform: translateY(-3px);
        }

        .step-item::before {
            content: counter(step-counter);
            position: absolute;
            top: -12px;
            left: 20px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-red), #C21E24);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-red-glow);
        }

        .step-item .step-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            margin-top: 4px;
        }

        .step-item .step-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Vertical cards */
        .vertical-card-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .vertical-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .vertical-card:hover {
            border-color: var(--border-red);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .vertical-card .card-img-wrap {
            position: relative;
            aspect-ratio: 3/4;
            overflow: hidden;
            background: var(--bg-secondary);
        }

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

        .vertical-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .vertical-card .card-img-overlay-text {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px 16px 12px;
            background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.85));
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .vertical-card .card-body-sm {
            padding: 14px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .vertical-card .card-body-sm .card-tag {
            font-size: 11px;
            font-weight: 600;
            color: var(--warm-gold);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 6px;
        }

        .vertical-card .card-body-sm .card-title-sm {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 8px;
            flex: 1;
        }

        .btn-sm-outline {
            background: transparent;
            color: var(--text-secondary);
            font-size: 13px;
            font-weight: 600;
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            padding: 7px 14px;
            transition: all var(--transition-fast);
            text-align: center;
            letter-spacing: 0.02em;
            display: inline-block;
        }
        .btn-sm-outline:hover {
            border-color: var(--neon-red);
            color: var(--neon-red-bright);
            background: rgba(232, 52, 58, 0.06);
        }

        /* Success cases */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .case-card .case-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 3px 12px;
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .case-card .case-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .case-card .case-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }

        .case-card .case-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .case-card .case-meta i {
            font-size: 12px;
            color: var(--cool-gray);
        }

        /* News section */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            align-items: stretch;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .news-item:first-child {
            padding-top: 0;
        }
        .news-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .news-item:hover .news-title {
            color: var(--neon-red-bright);
        }

        .news-item .news-date-block {
            min-width: 68px;
            text-align: center;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 8px 6px;
            height: fit-content;
            border: 1px solid var(--border-subtle);
            flex-shrink: 0;
        }

        .news-item .news-date-day {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            display: block;
            line-height: 1.2;
        }

        .news-item .news-date-month {
            font-size: 11px;
            color: var(--text-muted);
            display: block;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .news-item .news-body {
            flex: 1;
        }

        .news-item .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }

        .news-item .news-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .news-item .news-read-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--neon-red-bright);
            transition: all var(--transition-fast);
            align-self: flex-end;
            white-space: nowrap;
        }
        .news-item .news-read-btn i {
            font-size: 12px;
            transition: transform var(--transition-fast);
        }
        .news-item .news-read-btn:hover {
            color: #fff;
        }
        .news-item .news-read-btn:hover i {
            transform: translateX(4px);
        }

        /* Deep content */
        .deep-content {
            max-width: 860px;
            margin: 0 auto;
        }

        .deep-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            line-height: 1.45;
            letter-spacing: 0.02em;
        }

        .deep-content h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 24px;
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .deep-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .deep-content ul,
        .deep-content ol {
            margin-bottom: 16px;
            padding-left: 22px;
        }

        .deep-content ul li {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 4px 0;
            list-style: disc;
            list-style-position: outside;
        }

        .deep-content blockquote {
            border-left: 3px solid var(--neon-red);
            background: var(--bg-card);
            padding: 18px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            font-size: 15px;
            color: var(--text-primary);
            line-height: 1.8;
        }

        .deep-content blockquote cite {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 8px;
            font-style: normal;
        }

        /* Tier benefits / discount ladder */
        .tier-ladder {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 720px;
            margin: 0 auto;
        }

        .tier-step {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            transition: all var(--transition-base);
            position: relative;
        }

        .tier-step:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold-glow);
        }

        .tier-step .tier-level {
            min-width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--warm-gold), #B8892E);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: var(--shadow-gold-glow);
        }

        .tier-step .tier-info {
            flex: 1;
        }
        .tier-step .tier-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .tier-step .tier-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .tier-step .tier-action {
            flex-shrink: 0;
        }

        /* Brand intro */
        .brand-intro-block {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            position: relative;
            overflow: hidden;
        }

        .brand-intro-block::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--neon-red), var(--warm-gold), var(--neon-red));
        }

        .brand-intro-block .brand-intro-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .brand-intro-block p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 12px;
        }

        /* FAQ */
        .faq-list .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-list .accordion-button {
            background: var(--bg-card);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
        }

        .faq-list .accordion-button:not(.collapsed) {
            background: var(--bg-card-hover);
            color: var(--text-primary);
            box-shadow: none;
            border-top: 3px solid var(--neon-red);
        }

        .faq-list .accordion-button:focus {
            box-shadow: none;
            outline: none;
        }

        .faq-list .accordion-button::after {
            content: '+';
            background-image: none;
            font-size: 22px;
            font-weight: 300;
            color: var(--text-secondary);
            transition: transform var(--transition-base);
            width: auto;
            height: auto;
        }

        .faq-list .accordion-button:not(.collapsed)::after {
            content: '×';
            transform: rotate(0deg);
            color: var(--neon-red-bright);
        }

        .faq-list .accordion-body {
            background: var(--bg-card-hover);
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            padding: 16px 22px 22px;
        }

        /* Final CTA */
        .final-cta-section {
            padding: 72px 0;
            background:
                radial-gradient(ellipse at 50% 50%, rgba(232, 52, 58, 0.12) 0%, transparent 60%),
                var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .final-cta-card {
            text-align: center;
            padding: 48px 32px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-red);
            box-shadow: 0 0 40px rgba(232, 52, 58, 0.15);
        }

        .final-cta-card .cta-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .final-cta-card .cta-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 560px;
            margin: 0 auto 26px;
        }

        .final-cta-card .cta-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark-footer);
            border-top: 2px solid var(--border-subtle);
            padding: 48px 0 24px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .site-footer .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }

        .site-footer .footer-desc {
            font-size: 13px;
            line-height: 1.8;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .site-footer .footer-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 8px;
        }
        .site-footer .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .site-footer .footer-links a:hover {
            color: var(--neon-red-bright);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 36px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
        }

        .site-footer .footer-bottom a {
            color: var(--text-muted);
            font-size: 12px;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--neon-red-bright);
        }

        /* Responsive */
        @media (max-width: 991px) {
            .hero-title {
                font-size: 32px;
            }
            .hero-section {
                padding: 48px 0 44px;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .pricing-card.highlighted {
                order: -1;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .vertical-card-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: var(--spacing-mobile) 0;
            }
            .section-title {
                font-size: 24px;
            }
        }

        @media (max-width: 576px) {
            .hero-title {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .hero-cta-group .btn {
                width: 100%;
                justify-content: center;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .vertical-card-flow {
                grid-template-columns: 1fr;
            }
            .news-item {
                flex-direction: column;
                gap: 10px;
            }
            .news-item .news-date-block {
                min-width: auto;
                display: inline-flex;
                gap: 6px;
                align-items: center;
                padding: 6px 14px;
                width: fit-content;
            }
            .news-item .news-date-day {
                font-size: 16px;
            }
            .news-item .news-date-month {
                font-size: 11px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 21px;
            }
            .feature-compare-table {
                font-size: 12px;
            }
            .feature-compare-table thead th,
            .feature-compare-table tbody td {
                padding: 10px 8px;
                font-size: 12px;
            }
            .brand-intro-block {
                padding: 24px 18px;
            }
            .final-cta-card {
                padding: 32px 18px;
            }
            .final-cta-card .cta-title {
                font-size: 22px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B0E13;
            --bg-secondary: #11161E;
            --bg-card: #151C26;
            --bg-card-hover: #1A2432;
            --bg-dark-footer: #070A0E;
            --text-primary: #F0F2F5;
            --text-secondary: #A8B3BE;
            --text-muted: #6E7B88;
            --neon-red: #E8343A;
            --neon-red-bright: #FF4A52;
            --neon-red-dim: rgba(232, 52, 58, 0.18);
            --warm-gold: #D4A444;
            --warm-gold-bright: #E8B95A;
            --warm-gold-dim: rgba(212, 164, 68, 0.16);
            --cool-gray: #8A9BA8;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-gold: rgba(212, 164, 68, 0.35);
            --border-red: rgba(232, 52, 58, 0.4);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 10px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(232, 52, 58, 0.4);
            --shadow-gold-glow: 0 0 24px rgba(212, 164, 68, 0.35);
            --shadow-red-glow: 0 0 20px rgba(232, 52, 58, 0.4);
            --spacing-section: 72px;
            --spacing-mobile: 44px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s ease;
        }

        * {
            box-sizing: border-box;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

        a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--neon-red-bright);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--warm-gold);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

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

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-secondary);
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 14px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 780px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 5px 16px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 10, 14, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            min-height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .navbar {
            padding: 0;
            min-height: 68px;
        }
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            white-space: nowrap;
        }
        .site-header .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--neon-red), #B81E24);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: var(--shadow-red-glow);
            flex-shrink: 0;
        }
        .site-header .navbar-brand span {
            color: var(--text-primary);
            font-size: 22px;
            font-weight: 700;
        }
        .site-header .nav-link {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 24px 14px !important;
            position: relative;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--neon-red);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0);
            transition: opacity var(--transition-fast), transform var(--transition-fast);
        }
        .site-header .nav-link:hover {
            color: var(--text-primary);
        }
        .site-header .nav-link:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }
        .site-header .nav-link.active {
            color: #fff;
            text-shadow: 0 0 8px rgba(232, 52, 58, 0.6);
        }
        .site-header .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
            background: var(--neon-red-bright);
            box-shadow: 0 0 8px rgba(232, 52, 58, 0.5);
        }
        .nav-cta-btn {
            display: inline-block;
            background: var(--neon-red);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 18px;
            border-radius: 6px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.03em;
            border: 1px solid var(--neon-red-bright);
        }
        .nav-cta-btn:hover {
            background: var(--neon-red-bright);
            color: #fff;
            box-shadow: var(--shadow-red-glow);
            transform: translateY(-1px);
        }
        .navbar-toggler {
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            padding: 6px 12px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-sm);
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--warm-gold);
        }
        .navbar-toggler i {
            font-size: 20px;
        }

        /* Buttons */
        .btn-primary-custom {
            display: inline-block;
            background: var(--neon-red);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 8px;
            border: 1px solid var(--neon-red-bright);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            cursor: pointer;
        }
        .btn-primary-custom:hover {
            background: var(--neon-red-bright);
            color: #fff;
            box-shadow: var(--shadow-red-glow);
            transform: translateY(-2px);
        }
        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: var(--neon-red);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 8px;
            border: 1px solid var(--border-red);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            cursor: pointer;
        }
        .btn-outline-custom:hover {
            background: var(--neon-red-dim);
            color: var(--neon-red-bright);
            border-color: var(--neon-red-bright);
            transform: translateY(-2px);
        }
        .btn-gold-custom {
            display: inline-block;
            background: var(--warm-gold);
            color: #0B0E13;
            font-size: 15px;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: 8px;
            border: 1px solid var(--warm-gold-bright);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            cursor: pointer;
        }
        .btn-gold-custom:hover {
            background: var(--warm-gold-bright);
            color: #0B0E13;
            box-shadow: var(--shadow-gold-glow);
            transform: translateY(-2px);
        }

        /* Page Hero */
        .page-hero {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 56px 0 40px;
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 14, 19, 0.88) 0%, rgba(11, 14, 19, 0.92) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            color: var(--warm-gold);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 16px;
        }
        .page-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .page-hero h1 .highlight {
            color: var(--neon-red-bright);
            text-shadow: 0 0 16px rgba(232, 52, 58, 0.5);
        }
        .page-hero .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 700px;
        }

        /* Alternating blocks */
        .alternating-block {
            display: flex;
            align-items: center;
            gap: 40px;
            padding: 28px 0;
        }
        .alternating-block.reverse {
            flex-direction: row-reverse;
        }
        .alternating-block .block-text {
            flex: 1 1 55%;
        }
        .alternating-block .block-image {
            flex: 1 1 45%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
        }
        .alternating-block .block-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .alternating-block .block-image:hover img {
            transform: scale(1.04);
        }
        .block-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }
        .block-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
        }
        .block-data {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .data-chip {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 8px 16px;
            font-size: 13px;
            color: var(--cool-gray);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .data-chip i {
            color: var(--warm-gold);
            font-size: 12px;
        }
        .data-value {
            font-weight: 700;
            color: var(--text-primary);
            font-size: 15px;
        }

        /* Data Panel */
        .data-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .data-panel .panel-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .data-panel .panel-title i {
            color: var(--neon-red);
            font-size: 18px;
        }
        .mini-stat {
            background: var(--bg-secondary);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            text-align: center;
            border: 1px solid var(--border-subtle);
        }
        .mini-stat .stat-number {
            font-size: 26px;
            font-weight: 700;
            color: var(--warm-gold);
            line-height: 1.2;
        }
        .mini-stat .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Tool cards */
        .tool-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            height: 100%;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
        }
        .tool-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-red);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .tool-card .tool-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--neon-red-dim);
            color: var(--neon-red-bright);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
        }
        .tool-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .tool-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-accordion .accordion-header .accordion-button {
            background: var(--bg-card);
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--bg-card-hover);
            color: var(--neon-red-bright);
            box-shadow: none;
            border-top: 2px solid var(--neon-red);
        }
        .faq-accordion .accordion-button::after {
            filter: brightness(0) invert(1);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: none;
        }
        .faq-accordion .accordion-body {
            background: var(--bg-card-hover);
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            padding: 18px 22px;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(232, 52, 58, 0.12) 0%, rgba(212, 164, 68, 0.08) 100%);
            border-top: 1px solid var(--border-red);
            border-bottom: 1px solid var(--border-subtle);
        }
        .cta-box {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .cta-box p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark-footer);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 24px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--neon-red-bright);
        }
        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            font-size: 13px;
        }
        .footer-bottom a:hover {
            color: var(--neon-red-bright);
        }

        /* Responsive */
        @media (max-width: 991px) {
            .alternating-block,
            .alternating-block.reverse {
                flex-direction: column;
                gap: 24px;
            }
            .alternating-block .block-image,
            .alternating-block .block-text {
                flex: 1 1 100%;
                width: 100%;
            }
            .alternating-block .block-image img {
                height: 220px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .section-title {
                font-size: 26px;
            }
            .site-header .navbar-collapse {
                background: rgba(7, 10, 14, 0.98);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                padding: 16px 20px;
                margin-top: 8px;
                border: 1px solid var(--border-subtle);
            }
            .site-header .nav-link {
                padding: 12px 8px !important;
                font-size: 16px;
            }
            .site-header .nav-link::after {
                bottom: 4px;
                left: 8px;
                right: 8px;
            }
            .nav-cta-btn {
                margin-top: 10px;
                display: inline-block;
                text-align: center;
            }
        }

        @media (max-width: 576px) {
            .section {
                padding: var(--spacing-mobile) 0;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-hero {
                padding: 36px 0 28px;
                min-height: auto;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 22px;
            }
            .block-title {
                font-size: 20px;
            }
            .alternating-block .block-image img {
                height: 180px;
            }
            .data-panel {
                padding: 20px 16px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .mini-stat .stat-number {
                font-size: 22px;
            }
            .btn-primary-custom,
            .btn-outline-custom,
            .btn-gold-custom {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B0E13;
            --bg-secondary: #11161E;
            --bg-card: #151C26;
            --bg-card-hover: #1A2432;
            --bg-dark-footer: #070A0E;
            --text-primary: #F0F2F5;
            --text-secondary: #A8B3BE;
            --text-muted: #6E7B88;
            --neon-red: #E8343A;
            --neon-red-bright: #FF4A52;
            --neon-red-dim: rgba(232, 52, 58, 0.18);
            --warm-gold: #D4A444;
            --warm-gold-bright: #E8B95A;
            --warm-gold-dim: rgba(212, 164, 68, 0.16);
            --cool-gray: #8A9BA8;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-gold: rgba(212, 164, 68, 0.35);
            --border-red: rgba(232, 52, 58, 0.4);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 10px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(232, 52, 58, 0.4);
            --shadow-gold-glow: 0 0 24px rgba(212, 164, 68, 0.35);
            --shadow-red-glow: 0 0 20px rgba(232, 52, 58, 0.4);
            --spacing-section: 72px;
            --spacing-mobile: 44px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 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', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--neon-red-bright);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--warm-gold);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

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

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

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

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 14px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 780px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 5px 16px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 10, 14, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            min-height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .navbar {
            padding: 0;
            min-height: 68px;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .site-header .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--neon-red), #B81E24);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: var(--shadow-red-glow);
            flex-shrink: 0;
        }

        .site-header .navbar-brand span {
            color: var(--text-primary);
            font-size: 22px;
            font-weight: 700;
        }

        .site-header .nav-link {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 24px 14px !important;
            position: relative;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--neon-red);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0.4);
            transition: all var(--transition-fast);
        }

        .site-header .nav-link:hover {
            color: var(--text-primary);
        }

        .site-header .nav-link:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .site-header .nav-link.active {
            color: var(--text-primary);
            text-shadow: 0 0 12px rgba(232, 52, 58, 0.6);
        }

        .site-header .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
            background: var(--neon-red-bright);
            box-shadow: 0 0 12px rgba(232, 52, 58, 0.7);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--neon-red);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 14px rgba(232, 52, 58, 0.3);
        }

        .nav-cta-btn:hover {
            background: var(--neon-red-bright);
            color: #fff;
            box-shadow: 0 6px 22px rgba(232, 52, 58, 0.55);
            transform: translateY(-2px);
        }

        .navbar-toggler {
            border: 1px solid var(--border-subtle);
            background: var(--bg-card);
            color: var(--text-primary);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 18px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--border-gold);
            border-color: var(--border-gold);
        }

        /* Hero Section */
        .hero-category {
            padding: 64px 0 48px;
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at top right, rgba(232, 52, 58, 0.12), transparent 55%), radial-gradient(ellipse at bottom left, rgba(212, 164, 68, 0.08), transparent 50%);
            pointer-events: none;
        }

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

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb-custom a {
            color: var(--text-secondary);
        }

        .breadcrumb-custom a:hover {
            color: var(--neon-red-bright);
        }

        .breadcrumb-custom .separator {
            color: var(--border-gold);
            font-size: 12px;
        }

        .breadcrumb-custom .current {
            color: var(--warm-gold);
            font-weight: 500;
        }

        .hero-category h1 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .hero-category h1 .highlight-red {
            color: var(--neon-red-bright);
            text-shadow: 0 0 16px rgba(232, 52, 58, 0.4);
        }

        .hero-category h1 .highlight-gold {
            color: var(--warm-gold-bright);
            text-shadow: 0 0 16px rgba(212, 164, 68, 0.35);
        }

        .hero-category .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

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

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--neon-red);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 16px rgba(232, 52, 58, 0.35);
            border: none;
        }

        .btn-primary-custom:hover {
            background: var(--neon-red-bright);
            color: #fff;
            box-shadow: 0 6px 28px rgba(232, 52, 58, 0.55);
            transform: translateY(-2px);
        }

        .btn-secondary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            border: 1px solid var(--border-gold);
        }

        .btn-secondary-custom:hover {
            background: var(--warm-gold-dim);
            border-color: var(--warm-gold);
            color: var(--warm-gold-bright);
            transform: translateY(-2px);
        }

        /* Card Grid Section */
        .play-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .play-card:hover {
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--border-red);
        }

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

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

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

        .play-card .card-img-wrapper::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(to top, rgba(11, 14, 19, 0.85), transparent);
            pointer-events: none;
        }

        .play-card .card-body-custom {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .play-card .card-title {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .play-card .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }

        .play-card .card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .play-card .card-tags .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: 50px;
            background: var(--warm-gold-dim);
            color: var(--warm-gold);
            border: 1px solid var(--border-gold);
            letter-spacing: 0.02em;
        }

        .play-card .card-tags .tag-red {
            background: var(--neon-red-dim);
            color: var(--neon-red-bright);
            border: 1px solid var(--border-red);
        }

        .play-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .play-card .card-meta i {
            color: var(--warm-gold);
            font-size: 13px;
        }

        /* Pagination */
        .pagination-container {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 40px;
        }

        .pagination-custom {
            display: inline-flex;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .pagination-custom .page-item .page-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition-fast);
        }

        .pagination-custom .page-item .page-link:hover {
            background: var(--bg-card-hover);
            color: var(--text-primary);
            border-color: var(--border-gold);
        }

        .pagination-custom .page-item.active .page-link {
            background: var(--neon-red);
            border-color: var(--neon-red);
            color: #fff;
            box-shadow: 0 0 16px rgba(232, 52, 58, 0.4);
        }

        .pagination-custom .page-item.disabled .page-link {
            opacity: 0.45;
            pointer-events: none;
        }

        /* Deep Content */
        .deep-content {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            margin-bottom: 28px;
        }

        .deep-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-primary);
            line-height: 1.45;
        }

        .deep-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .deep-content ul {
            padding-left: 20px;
            margin-bottom: 16px;
        }

        .deep-content ul li {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 8px;
        }

        .deep-content .quote-block {
            border-left: 3px solid var(--warm-gold);
            background: var(--warm-gold-dim);
            padding: 14px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 16px 0;
            font-size: 14px;
            color: var(--warm-gold-bright);
            line-height: 1.75;
        }

        /* Steps */
        .step-item {
            display: flex;
            gap: 16px;
            margin-bottom: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: all var(--transition-fast);
        }

        .step-item:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-card);
        }

        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--neon-red-dim);
            border: 2px solid var(--neon-red);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--neon-red-bright);
        }

        .step-content h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .step-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* Prize Table */
        .prize-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }

        .prize-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 600px;
        }

        .prize-table thead {
            background: var(--bg-card-hover);
        }

        .prize-table thead th {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            padding: 14px 18px;
            text-align: left;
            border-bottom: 2px solid var(--border-red);
            white-space: nowrap;
        }

        .prize-table tbody td {
            padding: 13px 18px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-subtle);
            white-space: nowrap;
        }

        .prize-table tbody tr:hover {
            background: var(--bg-card);
        }

        .prize-table tbody tr:last-child td {
            border-bottom: none;
        }

        .prize-table .badge-gold {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 50px;
            background: var(--warm-gold-dim);
            color: var(--warm-gold);
            border: 1px solid var(--border-gold);
        }

        /* FAQ Accordion */
        .accordion-custom .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .accordion-custom .accordion-header .accordion-button {
            background: var(--bg-card);
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 24px;
            border: none;
            box-shadow: none;
            letter-spacing: 0.01em;
            transition: all var(--transition-fast);
        }

        .accordion-custom .accordion-header .accordion-button:not(.collapsed) {
            background: var(--bg-card-hover);
            color: var(--neon-red-bright);
            border-top: 2px solid var(--neon-red);
            border-radius: var(--radius-md);
        }

        .accordion-custom .accordion-header .accordion-button:focus {
            box-shadow: 0 0 0 2px var(--border-gold);
            border-color: var(--border-gold);
        }

        .accordion-custom .accordion-header .accordion-button::after {
            filter: invert(70%) sepia(40%) saturate(300%);
        }

        .accordion-custom .accordion-body {
            background: var(--bg-secondary);
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            padding: 18px 24px 22px;
            border-top: 1px solid var(--border-subtle);
        }

        /* CTA Section */
        .cta-section {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at top left, rgba(232, 52, 58, 0.1), transparent 50%), radial-gradient(ellipse at bottom right, rgba(212, 164, 68, 0.08), transparent 50%);
            pointer-events: none;
        }

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

        .cta-section h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 22px;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark-footer);
            padding: 52px 0 28px;
            border-top: 1px solid var(--border-subtle);
            margin-top: 0;
        }

        .site-footer .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .site-footer .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .site-footer .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

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

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

        .site-footer .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .site-footer .footer-links a:hover {
            color: var(--neon-red-bright);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }

        .site-footer .footer-bottom a {
            color: var(--text-muted);
            font-size: 13px;
        }

        .site-footer .footer-bottom a:hover {
            color: var(--neon-red-bright);
        }

        /* Responsive */
        @media (max-width: 991px) {
            .site-header .nav-link {
                padding: 14px 16px !important;
            }
            .site-header .nav-link::after {
                bottom: 6px;
                left: 16px;
                right: 16px;
            }
            .navbar-collapse {
                background: rgba(7, 10, 14, 0.98);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                padding: 16px 12px;
                margin-top: 8px;
                border: 1px solid var(--border-subtle);
            }
            .nav-cta-btn {
                margin: 8px 16px;
                justify-content: center;
            }
            .hero-category h1 {
                font-size: 32px;
            }
            .section {
                padding: var(--spacing-mobile) 0;
            }
            .cta-section {
                padding: 28px 24px;
            }
            .deep-content {
                padding: 24px 20px;
            }
        }

        @media (max-width: 576px) {
            .hero-category h1 {
                font-size: 26px;
            }
            .hero-category {
                padding: 44px 0 32px;
            }
            .play-card .card-img-wrapper {
                height: 140px;
            }
            .section-title {
                font-size: 24px;
            }
            .cta-section h3 {
                font-size: 22px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0B0E13;
            --bg-secondary: #11161E;
            --bg-card: #151C26;
            --bg-card-hover: #1A2432;
            --bg-dark-footer: #070A0E;
            --text-primary: #F0F2F5;
            --text-secondary: #A8B3BE;
            --text-muted: #6E7B88;
            --neon-red: #E8343A;
            --neon-red-bright: #FF4A52;
            --neon-red-dim: rgba(232, 52, 58, 0.18);
            --warm-gold: #D4A444;
            --warm-gold-bright: #E8B95A;
            --warm-gold-dim: rgba(212, 164, 68, 0.16);
            --cool-gray: #8A9BA8;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-gold: rgba(212, 164, 68, 0.35);
            --border-red: rgba(232, 52, 58, 0.4);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 10px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(232, 52, 58, 0.4);
            --shadow-gold-glow: 0 0 24px rgba(212, 164, 68, 0.35);
            --shadow-red-glow: 0 0 20px rgba(232, 52, 58, 0.4);
            --spacing-section: 72px;
            --spacing-mobile: 44px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 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', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--neon-red-bright);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--warm-gold);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

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

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

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

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 14px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 780px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 5px 16px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 10, 14, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            min-height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .navbar {
            padding: 0;
            min-height: 68px;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .site-header .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--neon-red), #B81E24);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: var(--shadow-red-glow);
            flex-shrink: 0;
        }

        .site-header .navbar-brand span {
            color: var(--text-primary);
            font-size: 22px;
            font-weight: 700;
        }

        .site-header .nav-link {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 24px 14px !important;
            position: relative;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--neon-red);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0.4);
            transition: opacity var(--transition-fast), transform var(--transition-fast);
        }

        .site-header .nav-link:hover {
            color: #fff;
        }

        .site-header .nav-link:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .site-header .nav-link.active {
            color: #fff;
            text-shadow: 0 0 12px rgba(255, 74, 82, 0.8);
        }

        .site-header .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
            background: var(--neon-red);
            box-shadow: 0 0 10px rgba(232, 52, 58, 0.8);
        }

        .nav-cta-btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--warm-gold), var(--warm-gold-bright));
            color: #1A1206;
            font-weight: 700;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: 50px;
            transition: all var(--transition-fast);
            border: none;
            box-shadow: var(--shadow-gold-glow);
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--warm-gold-bright), #F4CD6E);
            color: #1A1206;
            transform: translateY(-1px);
            box-shadow: 0 0 32px rgba(212, 164, 68, 0.55);
        }

        .navbar-toggler {
            border: 1px solid var(--border-subtle);
            color: #fff;
            font-size: 22px;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.04);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--warm-gold);
        }

        .navbar-toggler i {
            color: var(--text-primary);
        }

        /* Hero Section */
        .category-hero {
            padding: 72px 0 56px;
            background: radial-gradient(ellipse at 30% 20%, rgba(232, 52, 58, 0.08), transparent 55%),
                radial-gradient(ellipse at 70% 80%, rgba(212, 164, 68, 0.06), transparent 55%),
                var(--bg-primary);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--neon-red), var(--warm-gold), transparent);
            opacity: 0.7;
        }

        .category-hero h1 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 0.03em;
        }

        .category-hero h1 .highlight {
            color: var(--neon-red-bright);
            text-shadow: 0 0 28px rgba(232, 52, 58, 0.5);
        }

        .category-hero .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 760px;
            margin-bottom: 24px;
        }

        .hero-badge-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 6px 16px;
        }

        .hero-badge i {
            font-size: 14px;
        }

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

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--neon-red), #C01E24);
            border: none;
            border-radius: var(--radius-md);
            padding: 13px 28px;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-red-glow);
        }

        .btn-primary-custom:hover {
            background: linear-gradient(135deg, var(--neon-red-bright), #E0444C);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(232, 52, 58, 0.55);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 13px 28px;
            transition: all var(--transition-fast);
        }

        .btn-outline-custom:hover {
            border-color: var(--warm-gold);
            color: var(--warm-gold-bright);
            background: rgba(212, 164, 68, 0.08);
            transform: translateY(-2px);
        }

        /* 数据解释区 */
        .data-explain-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-left: 3px solid var(--warm-gold);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            margin-bottom: 32px;
        }

        .data-explain-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .data-explain-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* 表格样式 */
        .table-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            overflow-x: auto;
            box-shadow: var(--shadow-card);
        }

        .table-wrapper .table-title-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            gap: 12px;
        }

        .table-wrapper .table-title-row h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 0;
            color: var(--text-primary);
        }

        .table-update-note {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .table-data {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            color: var(--text-secondary);
            font-size: 14px;
            min-width: 800px;
        }

        .table-data thead th {
            background: var(--bg-card-hover);
            color: var(--text-primary);
            font-weight: 700;
            font-size: 13px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            padding: 14px 16px;
            border-bottom: 2px solid var(--border-red);
            white-space: nowrap;
        }

        .table-data tbody td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border-subtle);
            vertical-align: middle;
            white-space: nowrap;
        }

        .table-data tbody tr {
            transition: background var(--transition-fast);
        }

        .table-data tbody tr:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .table-data tbody tr:last-child td {
            border-bottom: none;
        }

        .table-data .amount {
            font-weight: 700;
            color: var(--warm-gold-bright);
            font-variant-numeric: tabular-nums;
        }

        .table-data .lottery-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            background: var(--neon-red-dim);
            color: var(--neon-red-bright);
            border: 1px solid var(--border-red);
        }

        .table-data .status-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            background: var(--warm-gold-dim);
            color: var(--warm-gold-bright);
            border: 1px solid var(--border-gold);
        }

        .table-data .status-badge.pending {
            background: rgba(255, 165, 0, 0.12);
            color: #FFB74D;
            border-color: rgba(255, 165, 0, 0.3);
        }

        /* 统计卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: all var(--transition-base);
        }

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

        .stat-card .stat-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--warm-gold-bright);
            font-variant-numeric: tabular-nums;
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .stat-card .stat-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            color: var(--warm-gold);
            font-size: 20px;
        }

        /* 中奖故事卡片 */
        .story-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            height: 100%;
            box-shadow: var(--shadow-card);
        }

        .story-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-red);
            box-shadow: var(--shadow-card-hover);
        }

        .story-card .story-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .story-card .story-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(7, 10, 14, 0.85) 100%);
        }

        .story-card .story-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 1;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: rgba(232, 52, 58, 0.9);
            border-radius: 50px;
            padding: 5px 14px;
        }

        .story-card .story-body {
            padding: 22px 24px 24px;
        }

        .story-card .story-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .story-card .story-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .story-card .story-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .story-card .story-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 流程步骤 */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .flow-step {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            position: relative;
            transition: all var(--transition-fast);
        }

        .flow-step:hover {
            border-color: var(--neon-red);
            box-shadow: var(--shadow-card-hover);
        }

        .flow-step .step-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-red), #B81E24);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
        }

        .flow-step h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .flow-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-list .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
        }

        .faq-list .accordion-button {
            background: var(--bg-card);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 16px;
            padding: 20px 24px;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
        }

        .faq-list .accordion-button::after {
            content: '\2b';
            background-image: none;
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            width: auto;
            height: auto;
            font-size: 18px;
            transform: none;
            transition: transform var(--transition-fast);
            color: var(--warm-gold);
        }

        .faq-list .accordion-button:not(.collapsed)::after {
            content: '\f00d';
            transform: rotate(180deg);
            color: var(--neon-red-bright);
        }

        .faq-list .accordion-button:not(.collapsed) {
            background: var(--bg-card-hover);
            border-bottom: 1px solid var(--border-red);
        }

        .faq-list .accordion-button:focus {
            box-shadow: 0 0 0 2px var(--warm-gold);
            border-color: var(--border-gold);
        }

        .faq-list .accordion-body {
            background: var(--bg-card-hover);
            color: var(--text-secondary);
            font-size: 15px;
            padding: 20px 24px;
            line-height: 1.9;
        }

        /* CTA */
        .cta-section {
            background: radial-gradient(ellipse at 50% 0%, rgba(232, 52, 58, 0.12), transparent 60%),
                var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 64px 0;
        }

        .cta-box {
            background: linear-gradient(135deg, #1A1220, #16101A);
            border: 1px solid var(--border-red);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-red-glow);
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark-footer);
            border-top: 1px solid var(--border-subtle);
            padding-top: 56px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .site-footer .footer-desc {
            font-size: 13px;
            line-height: 1.8;
            color: var(--text-muted);
            max-width: 320px;
        }

        .site-footer .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

        .site-footer .footer-links li {
            margin-bottom: 10px;
        }

        .site-footer .footer-links a {
            color: var(--text-secondary);
            font-size: 13px;
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .site-footer .footer-links a:hover {
            color: var(--warm-gold-bright);
        }

        .site-footer .footer-links a::before {
            content: '\f105';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 12px;
            color: var(--warm-gold);
            opacity: 0.7;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 40px;
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

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

        .site-footer .footer-bottom a:hover {
            color: var(--warm-gold-bright);
        }

        /* 响应式 */
        @media (max-width: 991.98px) {
            .site-header .nav-link {
                padding: 14px 16px !important;
            }
            .site-header .nav-link::after {
                bottom: 6px;
                left: 16px;
                right: 16px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .section {
                padding: var(--spacing-mobile) 0;
            }
            .category-hero {
                padding: 48px 0 40px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .flow-steps {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .table-wrapper {
                padding: 14px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .data-explain-card {
                padding: 20px 18px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
        }

        @media (max-width: 380px) {
            .category-hero h1 {
                font-size: 24px;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .hero-cta-group .btn {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B0E13;
            --bg-secondary: #11161E;
            --bg-card: #151C26;
            --bg-card-hover: #1A2432;
            --bg-dark-footer: #070A0E;
            --text-primary: #F0F2F5;
            --text-secondary: #A8B3BE;
            --text-muted: #6E7B88;
            --neon-red: #E8343A;
            --neon-red-bright: #FF4A52;
            --neon-red-dim: rgba(232, 52, 58, 0.18);
            --warm-gold: #D4A444;
            --warm-gold-bright: #E8B95A;
            --warm-gold-dim: rgba(212, 164, 68, 0.16);
            --cool-gray: #8A9BA8;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-gold: rgba(212, 164, 68, 0.35);
            --border-red: rgba(232, 52, 58, 0.4);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 10px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(232, 52, 58, 0.4);
            --shadow-gold-glow: 0 0 24px rgba(212, 164, 68, 0.35);
            --shadow-red-glow: 0 0 20px rgba(232, 52, 58, 0.4);
            --spacing-section: 72px;
            --spacing-mobile: 44px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 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', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }
        a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--neon-red-bright);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--warm-gold);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-secondary);
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 14px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 780px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 5px 16px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 10, 14, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            min-height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .navbar {
            padding: 0;
            min-height: 68px;
        }
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            white-space: nowrap;
        }
        .site-header .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--neon-red), #B81E24);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: var(--shadow-red-glow);
            flex-shrink: 0;
        }
        .site-header .navbar-brand span {
            color: var(--text-primary);
            font-size: 22px;
            font-weight: 700;
        }
        .site-header .nav-link {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 24px 14px !important;
            position: relative;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--neon-red);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0);
            transition: opacity var(--transition-fast), transform var(--transition-fast);
        }
        .site-header .nav-link:hover {
            color: #fff;
        }
        .site-header .nav-link:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }
        .site-header .nav-link.active {
            color: #fff;
            text-shadow: 0 0 12px rgba(232, 52, 58, 0.6);
        }
        .site-header .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
            background: var(--neon-red);
            box-shadow: 0 0 12px rgba(232, 52, 58, 0.8);
        }
        .nav-cta-btn {
            background: var(--neon-red);
            color: #fff !important;
            border-radius: 50px;
            padding: 10px 22px !important;
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.03em;
            transition: background var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: 0 0 0 rgba(232,52,58,0);
            display: inline-flex;
            align-items: center;
        }
        .nav-cta-btn:hover {
            background: var(--neon-red-bright);
            box-shadow: var(--shadow-red-glow);
        }
        .navbar-toggler {
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            font-size: 22px;
            padding: 8px 12px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--neon-red);
        }
        /* Hero for category */
        .category-hero {
            padding: 80px 0 60px;
            background: linear-gradient(180deg, rgba(11,14,19,0.85) 0%, rgba(17,22,30,0.95) 100%), url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
            background-position: center 30%;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--neon-red), var(--warm-gold));
            opacity: 0.7;
        }
        .category-hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            letter-spacing: 0.02em;
            margin-bottom: 20px;
        }
        .category-hero h1 .highlight {
            color: var(--neon-red);
            text-shadow: 0 0 20px rgba(232,52,58,0.5);
        }
        .category-hero .lead {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 760px;
            margin-bottom: 30px;
            line-height: 1.8;
        }
        .hero-actions .btn {
            margin-right: 12px;
            margin-bottom: 10px;
        }
        /* Buttons */
        .btn {
            border-radius: var(--radius-sm);
            font-weight: 600;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            padding: 10px 24px;
        }
        .btn-primary {
            background-color: var(--neon-red);
            border: 1px solid var(--neon-red);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background-color: var(--neon-red-bright);
            border-color: var(--neon-red-bright);
            box-shadow: var(--shadow-red-glow);
            color: #fff;
        }
        .btn-outline-light {
            border: 1px solid rgba(255,255,255,0.5);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            color: #fff;
        }
        .btn-outline-red {
            border: 1px solid var(--neon-red);
            color: var(--neon-red);
            background: transparent;
        }
        .btn-outline-red:hover {
            background: var(--neon-red-dim);
            border-color: var(--neon-red-bright);
            color: var(--neon-red-bright);
        }
        .btn-gold {
            background: var(--warm-gold);
            border: 1px solid var(--warm-gold);
            color: #1a1a1a;
        }
        .btn-gold:hover {
            background: var(--warm-gold-bright);
            border-color: var(--warm-gold-bright);
            box-shadow: var(--shadow-gold-glow);
            color: #1a1a1a;
        }
        /* Cards */
        .custom-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-base);
            height: 100%;
        }
        .custom-card:hover {
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        /* List-style entries */
        .data-entry {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            margin-bottom: 20px;
            transition: all var(--transition-base);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
        }
        .data-entry:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-red);
            box-shadow: var(--shadow-card-hover);
        }
        .data-entry .date-badge {
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            color: var(--warm-gold);
            border-radius: 8px;
            padding: 8px 12px;
            text-align: center;
            font-weight: 600;
            min-width: 80px;
            flex-shrink: 0;
        }
        .data-entry .entry-content {
            flex: 1;
            min-width: 200px;
        }
        .data-entry .entry-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .data-entry .entry-summary {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .data-entry .entry-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            background: var(--neon-red-dim);
            border: 1px solid var(--border-red);
            color: var(--neon-red-bright);
            border-radius: 50px;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .tag-gold {
            background: var(--warm-gold-dim);
            border-color: var(--border-gold);
            color: var(--warm-gold-bright);
        }
        .data-entry .btn-read {
            flex-shrink: 0;
        }
        /* Sidebar */
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px;
            margin-bottom: 24px;
        }
        .sidebar-card .sidebar-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
            border-left: 3px solid var(--neon-red);
            padding-left: 12px;
        }
        .filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .filter-check {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-secondary);
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            padding: 6px 16px;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .filter-check:hover {
            border-color: var(--neon-red);
            color: #fff;
        }
        .filter-check input {
            display: none;
        }
        .filter-check.active {
            background: var(--neon-red-dim);
            border-color: var(--neon-red);
            color: #fff;
        }
        .related-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 15px;
            transition: all var(--transition-fast);
        }
        .related-link:last-child {
            border-bottom: none;
        }
        .related-link i {
            color: var(--neon-red);
            width: 20px;
            text-align: center;
        }
        .related-link:hover {
            color: #fff;
            padding-left: 6px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud .tag {
            font-size: 13px;
            padding: 6px 14px;
            transition: all var(--transition-fast);
        }
        .tag-cloud .tag:hover {
            background: var(--neon-red);
            border-color: var(--neon-red);
            color: #fff;
            cursor: pointer;
        }
        /* FAQ */
        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .accordion-button {
            background: var(--bg-card);
            color: var(--text-primary);
            font-weight: 600;
            padding: 18px 20px;
            border-radius: var(--radius-md) !important;
        }
        .accordion-button:not(.collapsed) {
            background: var(--bg-card-hover);
            color: var(--neon-red-bright);
            box-shadow: none;
            border-top: 2px solid var(--neon-red);
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--warm-gold);
        }
        .accordion-button::after {
            filter: invert(1);
        }
        .accordion-body {
            background: var(--bg-secondary);
            color: var(--text-secondary);
            padding: 18px 20px;
            line-height: 1.8;
        }
        /* Stats */
        .stat-block {
            text-align: center;
            padding: 30px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }
        .stat-block:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold-glow);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--warm-gold);
            letter-spacing: 0.02em;
            margin-bottom: 8px;
        }
        .stat-label {
            color: var(--text-secondary);
            font-size: 14px;
        }
        /* Footer */
        .site-footer {
            background: var(--bg-dark-footer);
            padding: 50px 0 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .footer-desc {
            line-height: 1.7;
            color: var(--text-secondary);
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--neon-red-bright);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            margin-top: 30px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
            font-size: 12px;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--neon-red-bright);
        }
        /* Utilities */
        .text-gold {
            color: var(--warm-gold) !important;
        }
        .text-red {
            color: var(--neon-red) !important;
        }
        .bg-gold-dim {
            background: var(--warm-gold-dim);
        }
        .bg-red-dim {
            background: var(--neon-red-dim);
        }
        .border-gold {
            border-color: var(--border-gold) !important;
        }
        .border-red {
            border-color: var(--border-red) !important;
        }
        /* Responsive */
        @media (max-width: 991.98px) {
            .category-hero h1 {
                font-size: 36px;
            }
            .section {
                padding: 48px 0;
            }
            .site-header .nav-link {
                padding: 12px 16px !important;
            }
            .navbar-collapse {
                background: rgba(7,10,14,0.98);
                border-top: 1px solid var(--border-subtle);
                padding: 16px;
                margin-top: 8px;
            }
        }
        @media (max-width: 575.98px) {
            .category-hero {
                padding: 50px 0 40px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .data-entry {
                flex-direction: column;
                align-items: flex-start;
            }
            .data-entry .btn-read {
                align-self: flex-end;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .stat-block {
                padding: 20px 15px;
            }
            .stat-number {
                font-size: 28px;
            }
        }

/* roulang page: category5 */
:root {
            --bg-primary: #0B0E13;
            --bg-secondary: #11161E;
            --bg-card: #151C26;
            --bg-card-hover: #1A2432;
            --bg-dark-footer: #070A0E;
            --text-primary: #F0F2F5;
            --text-secondary: #A8B3BE;
            --text-muted: #6E7B88;
            --neon-red: #E8343A;
            --neon-red-bright: #FF4A52;
            --neon-red-dim: rgba(232, 52, 58, 0.18);
            --warm-gold: #D4A444;
            --warm-gold-bright: #E8B95A;
            --warm-gold-dim: rgba(212, 164, 68, 0.16);
            --cool-gray: #8A9BA8;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-gold: rgba(212, 164, 68, 0.35);
            --border-red: rgba(232, 52, 58, 0.4);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 10px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(232, 52, 58, 0.4);
            --shadow-gold-glow: 0 0 24px rgba(212, 164, 68, 0.35);
            --shadow-red-glow: 0 0 20px rgba(232, 52, 58, 0.4);
            --spacing-section: 72px;
            --spacing-mobile: 44px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s ease;
        }

        * {
            box-sizing: border-box;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            letter-spacing: 0.01em;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:hover {
            color: var(--neon-red-bright);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--warm-gold);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

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

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

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

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 14px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 780px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 5px 16px;
            margin-bottom: 14px;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 10, 14, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            min-height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .navbar {
            padding: 0;
            min-height: 68px;
            width: 100%;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .site-header .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--neon-red), #B81E24);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: var(--shadow-red-glow);
            flex-shrink: 0;
        }

        .site-header .navbar-brand span {
            color: var(--text-primary);
            font-size: 22px;
            font-weight: 700;
        }

        .site-header .nav-link {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 24px 14px !important;
            position: relative;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--neon-red);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0.4);
            transition: opacity var(--transition-base), transform var(--transition-base);
        }

        .site-header .nav-link:hover {
            color: #fff;
        }

        .site-header .nav-link:hover::after {
            opacity: 0.6;
            transform: scaleX(1);
        }

        .site-header .nav-link.active {
            color: #fff;
        }

        .site-header .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
            box-shadow: 0 0 8px rgba(232, 52, 58, 0.6);
        }

        .site-header .nav-cta-btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--neon-red), #B81E24);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 8px 18px;
            border-radius: 50px;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            border: 1px solid rgba(232, 52, 58, 0.6);
            white-space: nowrap;
        }

        .site-header .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--neon-red-bright), #D02A32);
            color: #fff;
            box-shadow: 0 0 18px rgba(232, 52, 58, 0.5);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            background: transparent;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--warm-gold);
            outline-offset: 2px;
        }

        .navbar-toggler i {
            font-size: 20px;
        }

        /* Hero - Category Page */
        .category-hero {
            background: linear-gradient(180deg, rgba(7, 10, 14, 0.4) 0%, rgba(11, 14, 19, 0.95) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 90px 0 70px;
            position: relative;
            border-bottom: 1px solid var(--border-subtle);
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--neon-red), var(--warm-gold), var(--neon-red), transparent);
            z-index: 1;
        }

        .category-hero .breadcrumb {
            background: transparent;
            margin-bottom: 20px;
            padding: 0;
            font-size: 14px;
            color: var(--text-muted);
        }

        .category-hero .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .category-hero .breadcrumb a:hover {
            color: var(--warm-gold);
        }

        .category-hero .breadcrumb .separator {
            margin: 0 8px;
            color: var(--text-muted);
            opacity: 0.6;
        }

        .category-hero .breadcrumb .current {
            color: var(--warm-gold);
        }

        .category-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .category-hero h1 span.highlight {
            color: var(--neon-red-bright);
            text-shadow: 0 0 18px rgba(232, 52, 58, 0.4);
        }

        .category-hero .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 700px;
            margin-bottom: 28px;
        }

        .category-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .category-hero .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .category-hero .hero-meta i {
            color: var(--warm-gold);
            font-size: 14px;
        }

        /* Timeline Section */
        .timeline-section {
            padding: 72px 0;
            position: relative;
        }

        .timeline-wrapper {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding-left: 0;
        }

        .timeline-wrapper::before {
            content: '';
            position: absolute;
            top: 10px;
            left: 130px;
            bottom: 10px;
            width: 2px;
            background: linear-gradient(180deg, var(--neon-red), var(--warm-gold), var(--neon-red));
            box-shadow: 0 0 12px rgba(232, 52, 58, 0.35);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding: 0 0 42px 190px;
            margin-bottom: 0;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item .timeline-date {
            position: absolute;
            left: 0;
            top: 2px;
            width: 100px;
            text-align: right;
            font-size: 14px;
            font-weight: 600;
            color: var(--warm-gold);
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .timeline-item .timeline-dot {
            position: absolute;
            left: 124px;
            top: 9px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--neon-red);
            border: 3px solid var(--bg-primary);
            box-shadow: 0 0 10px rgba(232, 52, 58, 0.5);
            z-index: 2;
        }

        .timeline-item .timeline-dot.gold {
            background: var(--warm-gold);
            box-shadow: 0 0 10px rgba(212, 164, 68, 0.5);
        }

        .timeline-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 26px;
            transition: all var(--transition-base);
            position: relative;
        }

        .timeline-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-red), transparent);
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .timeline-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-red);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .timeline-card:hover::before {
            opacity: 1;
        }

        .timeline-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .timeline-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .timeline-card .timeline-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 3px 12px;
            margin-bottom: 8px;
        }

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

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .stat-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-red), transparent);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .stat-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-red);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .stat-card:hover::after {
            opacity: 1;
        }

        .stat-card .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }

        .stat-card .stat-number .unit {
            font-size: 16px;
            color: var(--warm-gold);
            font-weight: 600;
            margin-left: 2px;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }

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

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 26px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--neon-red), var(--warm-gold));
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold-glow);
            transform: translateY(-3px);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            background: var(--neon-red-dim);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--neon-red-bright);
            margin-bottom: 16px;
            border: 1px solid var(--border-red);
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .feature-card p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

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

        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-base);
            position: relative;
            counter-increment: step;
        }

        .process-step::before {
            content: counter(step);
            font-size: 42px;
            font-weight: 700;
            color: rgba(232, 52, 58, 0.25);
            position: absolute;
            top: 16px;
            right: 20px;
            line-height: 1;
            letter-spacing: 0;
        }

        .process-step:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-red);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .process-step .step-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--warm-gold-dim);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--warm-gold);
            margin-bottom: 14px;
            border: 1px solid var(--border-gold);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Testimonial */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 26px;
            transition: all var(--transition-base);
            position: relative;
        }

        .testimonial-card::before {
            content: '"';
            font-size: 60px;
            font-weight: 700;
            color: rgba(232, 52, 58, 0.25);
            position: absolute;
            top: -10px;
            left: 18px;
            line-height: 1;
            font-family: Georgia, serif;
        }

        .testimonial-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold-glow);
        }

        .testimonial-card .testimonial-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
            padding-top: 10px;
        }

        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .testimonial-card .testimonial-author i {
            color: var(--warm-gold);
            font-size: 16px;
        }

        /* FAQ */
        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .accordion-item:hover {
            border-color: var(--border-gold);
        }

        .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
            letter-spacing: 0.02em;
            line-height: 1.5;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(232, 52, 58, 0.08);
            color: var(--neon-red-bright);
            box-shadow: none;
            border-bottom: 1px solid var(--border-red);
        }

        .accordion-button::after {
            content: '+';
            background: none;
            font-size: 22px;
            font-weight: 300;
            color: var(--text-secondary);
            transition: all var(--transition-base);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .accordion-button:not(.collapsed)::after {
            content: '×';
            color: var(--neon-red-bright);
            font-size: 26px;
        }

        .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--warm-gold);
            outline-offset: -2px;
        }

        .accordion-body {
            background: rgba(11, 14, 19, 0.4);
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            padding: 18px 22px;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(232, 52, 58, 0.12), rgba(212, 164, 68, 0.08)), var(--bg-secondary);
            border-top: 1px solid var(--border-red);
            border-bottom: 1px solid var(--border-gold);
            padding: 64px 0;
        }

        .cta-section .cta-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 14px;
            color: var(--text-primary);
        }

        .cta-section .cta-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 620px;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark-footer);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 24px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .site-footer .footer-desc {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .site-footer .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

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

        .site-footer .footer-links li {
            margin-bottom: 10px;
        }

        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 13.5px;
            transition: all var(--transition-fast);
            display: inline-block;
            position: relative;
        }

        .site-footer .footer-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--neon-red);
            transition: width var(--transition-fast);
        }

        .site-footer .footer-links a:hover {
            color: var(--text-primary);
        }

        .site-footer .footer-links a:hover::after {
            width: 100%;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 40px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

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

        .site-footer .footer-bottom a:hover {
            color: var(--warm-gold);
        }

        /* Buttons */
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--neon-red), #B81E24);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 50px;
            letter-spacing: 0.03em;
            border: 1px solid rgba(232, 52, 58, 0.6);
            transition: all var(--transition-fast);
            display: inline-block;
            text-align: center;
        }

        .btn-primary-custom:hover {
            background: linear-gradient(135deg, var(--neon-red-bright), #D02A32);
            color: #fff;
            box-shadow: 0 0 22px rgba(232, 52, 58, 0.5);
            transform: translateY(-2px);
        }

        .btn-secondary-custom {
            background: transparent;
            color: var(--neon-red-bright);
            font-weight: 600;
            font-size: 15px;
            padding: 11px 26px;
            border-radius: 50px;
            letter-spacing: 0.03em;
            border: 1px solid var(--border-red);
            transition: all var(--transition-fast);
            display: inline-block;
            text-align: center;
        }

        .btn-secondary-custom:hover {
            background: var(--neon-red-dim);
            color: var(--neon-red-bright);
            border-color: var(--neon-red);
            box-shadow: 0 0 16px rgba(232, 52, 58, 0.3);
            transform: translateY(-2px);
        }

        .btn-ghost-custom {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 11px 26px;
            border-radius: 50px;
            letter-spacing: 0.03em;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            display: inline-block;
            text-align: center;
        }

        .btn-ghost-custom:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.25);
        }

        /* Responsive */
        @media (max-width: 991px) {
            .site-header .nav-link {
                padding: 14px 16px !important;
                font-size: 15px;
            }

            .site-header .nav-link::after {
                bottom: 6px;
                left: 16px;
                right: 16px;
            }

            .site-header .nav-cta-btn {
                margin: 8px 16px 16px;
                display: inline-block;
                text-align: center;
            }

            .timeline-wrapper::before {
                left: 26px;
            }

            .timeline-item {
                padding-left: 60px;
                padding-bottom: 36px;
            }

            .timeline-item .timeline-date {
                position: static;
                text-align: left;
                width: auto;
                margin-bottom: 6px;
                display: block;
                font-size: 13px;
            }

            .timeline-item .timeline-dot {
                left: 20px;
                top: 4px;
                width: 12px;
                height: 12px;
            }

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

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

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

            .category-hero h1 {
                font-size: 32px;
            }

            .section-title {
                font-size: 26px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: var(--spacing-mobile) 0;
            }

            .category-hero {
                padding: 56px 0 44px;
            }

            .category-hero h1 {
                font-size: 27px;
            }

            .category-hero .hero-desc {
                font-size: 15px;
            }

            .section-title {
                font-size: 23px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .stat-card {
                padding: 20px 14px;
            }

            .stat-card .stat-number {
                font-size: 24px;
            }

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

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

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

            .timeline-card {
                padding: 18px 16px;
            }

            .timeline-card h3 {
                font-size: 17px;
            }

            .timeline-card p {
                font-size: 14px;
            }

            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .cta-section .cta-title {
                font-size: 23px;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .navbar-collapse {
                background: rgba(7, 10, 14, 0.98);
                padding: 12px 16px;
                border-radius: var(--radius-md);
                margin-top: 8px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 23px;
            }

            .section-title {
                font-size: 20px;
            }

            .stats-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .timeline-item {
                padding-left: 48px;
            }

            .timeline-item .timeline-dot {
                left: 14px;
                width: 10px;
                height: 10px;
            }

            .timeline-wrapper::before {
                left: 18px;
            }

            .btn-primary-custom,
            .btn-secondary-custom,
            .btn-ghost-custom {
                font-size: 13px;
                padding: 10px 20px;
            }
        }

/* roulang page: category6 */
:root {
            --bg-primary: #0B0E13;
            --bg-secondary: #11161E;
            --bg-card: #151C26;
            --bg-card-hover: #1A2432;
            --bg-dark-footer: #070A0E;
            --text-primary: #F0F2F5;
            --text-secondary: #A8B3BE;
            --text-muted: #6E7B88;
            --neon-red: #E8343A;
            --neon-red-bright: #FF4A52;
            --neon-red-dim: rgba(232, 52, 58, 0.18);
            --warm-gold: #D4A444;
            --warm-gold-bright: #E8B95A;
            --warm-gold-dim: rgba(212, 164, 68, 0.16);
            --cool-gray: #8A9BA8;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-gold: rgba(212, 164, 68, 0.35);
            --border-red: rgba(232, 52, 58, 0.4);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 10px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(232, 52, 58, 0.4);
            --shadow-gold-glow: 0 0 24px rgba(212, 164, 68, 0.35);
            --shadow-red-glow: 0 0 20px rgba(232, 52, 58, 0.4);
            --spacing-section: 72px;
            --spacing-mobile: 44px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-base: 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', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

        a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--neon-red-bright);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--warm-gold);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-secondary);
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 14px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 780px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 5px 16px;
            margin-bottom: 14px;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 10, 14, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            min-height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .navbar {
            padding: 0;
            min-height: 68px;
        }
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            white-space: nowrap;
        }
        .site-header .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--neon-red), #B81E24);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: var(--shadow-red-glow);
            flex-shrink: 0;
        }
        .site-header .navbar-brand span {
            color: var(--text-primary);
            font-size: 22px;
            font-weight: 700;
        }
        .site-header .nav-link {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 24px 14px !important;
            position: relative;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .site-header .nav-link::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--neon-red);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0);
            transform-origin: left;
            transition: opacity var(--transition-fast), transform var(--transition-fast);
        }
        .site-header .nav-link:hover {
            color: var(--text-primary);
        }
        .site-header .nav-link:hover::after {
            opacity: 1;
            transform: scaleX(1);
        }
        .site-header .nav-link.active {
            color: var(--text-primary);
            text-shadow: 0 0 12px rgba(232, 52, 58, 0.6);
        }
        .site-header .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
            background: var(--neon-red);
            box-shadow: var(--shadow-red-glow);
        }
        .site-header .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--warm-gold);
            color: #0B0E13;
            font-weight: 700;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            white-space: nowrap;
            transition: background var(--transition-fast), box-shadow var(--transition-fast);
        }
        .site-header .nav-cta-btn:hover {
            background: var(--warm-gold-bright);
            color: #0B0E13;
            box-shadow: var(--shadow-gold-glow);
        }
        .navbar-toggler {
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            font-size: 22px;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(232, 52, 58, 0.35);
        }

        /* Page Hero */
        .page-hero {
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            border-bottom: 1px solid var(--border-subtle);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--neon-red), var(--warm-gold), var(--neon-red));
            opacity: 0.7;
        }
        .page-hero h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 18px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .page-hero h1 .highlight {
            color: var(--neon-red-bright);
            text-shadow: 0 0 24px rgba(232, 52, 58, 0.5);
        }
        .page-hero .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 720px;
            margin-bottom: 0;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 6px 18px;
            margin-bottom: 20px;
        }

        /* Cards / Generic */
        .card-dark {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            height: 100%;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .card-dark:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-red);
            background: var(--bg-card-hover);
        }
        .card-dark .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
            background: var(--neon-red-dim);
            color: var(--neon-red-bright);
            border: 1px solid var(--border-red);
            flex-shrink: 0;
        }
        .card-dark .card-icon.gold {
            background: var(--warm-gold-dim);
            color: var(--warm-gold-bright);
            border-color: var(--border-gold);
        }
        .card-dark h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .card-dark p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Step guide */
        .step-item {
            display: flex;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--border-red);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            color: var(--neon-red-bright);
            flex-shrink: 0;
            box-shadow: inset 0 0 18px rgba(232, 52, 58, 0.12);
        }
        .step-content h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .step-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 0;
        }
        .step-content .step-tip {
            display: inline-block;
            margin-top: 10px;
            font-size: 13px;
            color: var(--warm-gold);
            background: var(--warm-gold-dim);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 3px 14px;
        }

        /* Data demo table */
        .data-table-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .data-table-wrapper .table {
            margin-bottom: 0;
            color: var(--text-primary);
            font-size: 14px;
        }
        .data-table-wrapper .table thead th {
            background: var(--bg-secondary);
            color: var(--text-primary);
            font-weight: 600;
            border-bottom: 2px solid var(--border-red);
            white-space: nowrap;
            padding: 14px 16px;
            font-size: 13px;
            letter-spacing: 0.04em;
        }
        .data-table-wrapper .table tbody td {
            border-bottom: 1px solid var(--border-subtle);
            padding: 12px 16px;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .data-table-wrapper .table tbody tr:hover td {
            background: rgba(255, 255, 255, 0.03);
            color: var(--text-primary);
        }
        .data-table-wrapper .table .num-ball {
            display: inline-block;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--neon-red-dim);
            color: var(--neon-red-bright);
            font-weight: 700;
            text-align: center;
            line-height: 28px;
            font-size: 13px;
            margin-right: 4px;
            border: 1px solid var(--border-red);
        }
        .data-table-wrapper .table .num-ball.gold {
            background: var(--warm-gold-dim);
            color: var(--warm-gold-bright);
            border-color: var(--border-gold);
        }

        /* FAQ accordion */
        .accordion-dark .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }
        .accordion-dark .accordion-item:hover {
            border-color: rgba(232, 52, 58, 0.3);
        }
        .accordion-dark .accordion-header {
            margin: 0;
        }
        .accordion-dark .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 16px;
            padding: 20px 24px;
            border: none;
            box-shadow: none !important;
            letter-spacing: 0.02em;
            position: relative;
        }
        .accordion-dark .accordion-button::after {
            content: '+';
            background: none;
            font-size: 24px;
            font-weight: 400;
            color: var(--neon-red-bright);
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform var(--transition-base);
        }
        .accordion-dark .accordion-button:not(.collapsed)::after {
            content: '\00d7';
            font-size: 26px;
            transform: rotate(90deg);
        }
        .accordion-dark .accordion-button:not(.collapsed) {
            background: var(--bg-card-hover);
            color: var(--text-primary);
            border-bottom: 1px solid var(--border-red);
        }
        .accordion-dark .accordion-body {
            background: var(--bg-secondary);
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            padding: 20px 24px;
        }
        .accordion-dark .accordion-body .faq-tip {
            display: block;
            margin-top: 12px;
            padding: 10px 16px;
            background: var(--warm-gold-dim);
            border-left: 3px solid var(--warm-gold);
            border-radius: var(--radius-sm);
            color: var(--warm-gold-bright);
            font-size: 13px;
        }

        /* Buttons */
        .btn-primary-red {
            background: var(--neon-red);
            color: #fff;
            border: 1px solid var(--neon-red);
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.03em;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-red:hover,
        .btn-primary-red:focus {
            background: var(--neon-red-bright);
            border-color: var(--neon-red-bright);
            color: #fff;
            box-shadow: var(--shadow-red-glow);
            transform: translateY(-2px);
        }
        .btn-outline-red {
            background: transparent;
            color: var(--neon-red-bright);
            border: 1px solid var(--border-red);
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.03em;
            transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-red:hover,
        .btn-outline-red:focus {
            background: var(--neon-red-dim);
            color: var(--neon-red-bright);
            border-color: var(--neon-red);
            box-shadow: 0 0 18px rgba(232, 52, 58, 0.25);
        }
        .btn-gold {
            background: var(--warm-gold);
            color: #0B0E13;
            border: 1px solid var(--warm-gold);
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 700;
            font-size: 15px;
            letter-spacing: 0.03em;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-gold:hover,
        .btn-gold:focus {
            background: var(--warm-gold-bright);
            border-color: var(--warm-gold-bright);
            color: #0B0E13;
            box-shadow: var(--shadow-gold-glow);
            transform: translateY(-2px);
        }

        /* CTA Section */
        .cta-panel {
            background: linear-gradient(135deg, rgba(232, 52, 58, 0.12), rgba(212, 164, 68, 0.08)), var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--neon-red), var(--warm-gold));
            opacity: 0.8;
        }
        .cta-panel h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .cta-panel p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-panel .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Tips */
        .tip-card {
            display: flex;
            gap: 16px;
            padding: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            height: 100%;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .tip-card:hover {
            border-color: var(--border-gold);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
        }
        .tip-card .tip-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--warm-gold-dim);
            color: var(--warm-gold-bright);
            border: 1px solid var(--border-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .tip-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .tip-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* Related tools */
        .related-tool-card {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
        }
        .related-tool-card:hover {
            border-color: var(--border-red);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .related-tool-card .tool-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            background: var(--neon-red-dim);
            border: 1px solid var(--border-red);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--neon-red-bright);
            flex-shrink: 0;
        }
        .related-tool-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .related-tool-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark-footer);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
        }
        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }
        .site-footer .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.75;
            max-width: 320px;
        }
        .site-footer .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 8px;
        }
        .site-footer .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .site-footer .footer-links a:hover {
            color: var(--warm-gold-bright);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 36px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a {
            color: var(--text-muted);
            font-size: 13px;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--warm-gold-bright);
        }

        /* Responsive */
        @media (max-width: 991px) {
            .site-header .navbar-collapse {
                background: var(--bg-dark-footer);
                border-radius: var(--radius-md);
                padding: 16px;
                margin-top: 8px;
                border: 1px solid var(--border-subtle);
            }
            .site-header .nav-link {
                padding: 14px 16px !important;
            }
            .site-header .nav-link::after {
                bottom: 6px;
                left: 16px;
                right: 16px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .section {
                padding: var(--spacing-mobile) 0;
            }
            .section-title {
                font-size: 24px;
            }
            .cta-panel {
                padding: 36px 24px;
            }
            .cta-panel h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 576px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-desc {
                font-size: 15px;
            }
            .section-title {
                font-size: 21px;
            }
            .section-subtitle {
                font-size: 14px;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
            }
            .step-num {
                width: 44px;
                height: 44px;
                font-size: 18px;
            }
            .data-table-wrapper .table {
                font-size: 12px;
            }
            .data-table-wrapper .table thead th,
            .data-table-wrapper .table tbody td {
                padding: 10px 10px;
            }
            .data-table-wrapper .table .num-ball {
                width: 24px;
                height: 24px;
                line-height: 24px;
                font-size: 11px;
                margin-right: 2px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }