/* roulang page: index */
:root {
            --brand-red: #D71920;
            --brand-red-dark: #B31218;
            --charcoal: #191B1F;
            --charcoal-light: #2A2D33;
            --paper: #F7F5F0;
            --paper-white: #FFFDFB;
            --amber: #C8A45C;
            --amber-light: #E8D5B0;
            --text-gray: #6A6F78;
            --text-light: #9A9FA8;
            --divider: #ECE9E2;
            --success: #2E7D5B;
            --error: #C62828;
            --radius: 6px;
            --radius-lg: 8px;
            --radius-sm: 4px;
            --shadow-sm: 0 4px 16px rgba(25, 27, 31, 0.06);
            --shadow-md: 0 12px 30px rgba(25, 27, 31, 0.08);
            --shadow-lg: 0 20px 48px rgba(25, 27, 31, 0.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --font-serif: "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", "Consolas", "Courier New", monospace;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--charcoal);
            background-color: var(--paper);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--charcoal);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-red);
        }
        a:focus,
        button:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 3px;
        }

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

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (min-width: 1320px) {
            .container-custom {
                max-width: 1280px;
            }
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background-color: rgba(247, 245, 240, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--divider);
            padding: 0;
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .navbar-brand-custom {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--charcoal);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand-custom .logo-mark {
            display: inline-block;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            line-height: 32px;
            text-align: center;
            letter-spacing: 0;
        }
        .navbar-brand-custom:hover {
            color: var(--charcoal);
        }
        .navbar-nav-custom {
            gap: 8px;
        }
        .navbar-nav-custom .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--charcoal);
            padding: 8px 16px !important;
            position: relative;
            transition: color var(--transition-fast);
        }
        .navbar-nav-custom .nav-link::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--brand-red);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }
        .navbar-nav-custom .nav-link:hover::after,
        .navbar-nav-custom .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-nav-custom .nav-link:hover {
            color: var(--brand-red);
        }
        .navbar-nav-custom .nav-link.active {
            color: var(--brand-red);
            font-weight: 600;
        }
        .header-cta {
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            background: var(--charcoal);
            color: #fff;
            font-weight: 500;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--brand-red);
            color: #fff;
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            border: 1px solid var(--divider);
            background: transparent;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            color: var(--charcoal);
            font-size: 1.2rem;
            line-height: 1;
        }
        .navbar-toggler-custom:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 2px;
        }
        .mobile-drawer {
            border-top: 1px solid var(--divider);
            padding: 16px 0;
            display: none;
        }
        .mobile-drawer.show {
            display: block;
        }
        .mobile-drawer .nav-link {
            display: block;
            padding: 12px 0;
            font-size: 1rem;
            color: var(--charcoal);
            border-bottom: 1px solid var(--divider);
        }
        .mobile-drawer .nav-link:last-child {
            border-bottom: none;
        }
        .mobile-drawer .nav-link:hover,
        .mobile-drawer .nav-link.active {
            color: var(--brand-red);
        }

        /* ---------- Buttons ---------- */
        .btn-brand {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            background: var(--brand-red);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        .btn-brand:hover {
            background: var(--brand-red-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(215, 25, 32, 0.25);
        }
        .btn-brand-outline {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            background: transparent;
            color: var(--charcoal);
            border: 1px solid var(--charcoal);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .btn-brand-outline:hover {
            background: var(--charcoal);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm-brand {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid var(--charcoal);
            color: var(--charcoal);
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .btn-sm-brand:hover {
            background: var(--brand-red);
            border-color: var(--brand-red);
            color: #fff;
        }
        .btn-link-brand {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--brand-red);
            border: none;
            background: none;
            padding: 0;
            cursor: pointer;
            transition: gap var(--transition-fast), color var(--transition-fast);
        }
        .btn-link-brand:hover {
            color: var(--brand-red-dark);
            gap: 10px;
        }

        /* ---------- Hero Bento ---------- */
        .hero-bento {
            position: relative;
            background-image: linear-gradient(to right, rgba(25, 27, 31, 0.92) 0%, rgba(25, 27, 31, 0.72) 50%, rgba(25, 27, 31, 0.45) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center center;
            padding: 72px 0 80px;
            color: #fff;
            overflow: hidden;
        }
        .hero-bento .container-custom {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--amber-light);
            border: 1px solid rgba(200, 164, 92, 0.5);
            border-radius: 20px;
            padding: 4px 14px;
            margin-bottom: 16px;
            background: rgba(200, 164, 92, 0.08);
        }
        .hero-title {
            font-family: var(--font-serif);
            font-size: 3rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin-bottom: 24px;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }
        .hero-cta-group .btn-brand {
            background: var(--brand-red);
        }
        .hero-cta-group .btn-brand-outline {
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }
        .hero-cta-group .btn-brand-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }
        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .hero-stats-row span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-stats-row .stat-num {
            font-family: var(--font-mono);
            font-size: 1.1rem;
            font-weight: 600;
            color: #fff;
        }

        /* Bento Grid */
        .bento-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            grid-template-rows: auto;
            gap: 16px;
            margin-top: 32px;
        }
        .bento-main {
            grid-column: 1 / 2;
            grid-row: 1 / 3;
            background: rgba(255, 255, 255, 0.96);
            border-radius: var(--radius-lg);
            padding: 24px;
            color: var(--charcoal);
            border: 1px solid var(--divider);
            min-height: 280px;
            display: flex;
            flex-direction: column;
        }
        .bento-side {
            background: rgba(255, 255, 255, 0.96);
            border-radius: var(--radius);
            padding: 18px 20px;
            color: var(--charcoal);
            border: 1px solid var(--divider);
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .bento-side:hover {
            border-color: var(--brand-red);
            box-shadow: var(--shadow-sm);
            color: var(--charcoal);
        }
        .bento-cta-bar {
            grid-column: 1 / 3;
            background: rgba(255, 255, 255, 0.96);
            border-radius: var(--radius);
            padding: 14px 20px;
            color: var(--charcoal);
            border: 1px solid var(--divider);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .bento-cta-bar .cta-text {
            font-size: 0.9rem;
            font-weight: 500;
        }
        .ball-group {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }
        .ball {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            font-family: var(--font-mono);
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin: 0;
        }
        .ball-red {
            background: var(--brand-red);
        }
        .ball-blue {
            background: var(--charcoal);
        }
        .ball-amber {
            background: var(--amber);
            color: var(--charcoal);
        }

        /* ---------- Stats Strip ---------- */
        .stats-strip {
            background: var(--charcoal);
            padding: 36px 0;
            color: #fff;
        }
        .stats-strip .stat-item {
            text-align: center;
            padding: 8px 12px;
        }
        .stats-strip .stat-value {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .stats-strip .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }
        .stats-strip .stat-divider {
            border-right: 1px solid rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 767px) {
            .stats-strip .stat-divider {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                padding-bottom: 16px;
                margin-bottom: 16px;
            }
        }

        /* ---------- Section Base ---------- */
        .section-pad {
            padding: var(--section-pad) 0;
        }
        .section-pad-sm {
            padding: 48px 0;
        }
        .section-title {
            font-family: var(--font-serif);
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-gray);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 720px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--brand-red);
            margin-bottom: 12px;
        }

        /* ---------- Feature Grid (Asymmetric) ---------- */
        .feature-asymmetric {
            border-top: 1px solid var(--divider);
            padding-top: 32px;
        }
        .feature-main-card {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 32px;
            height: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .feature-main-card:hover {
            border-color: var(--brand-red);
            box-shadow: var(--shadow-sm);
        }
        .feature-side-card {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin-bottom: 16px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .feature-side-card:hover {
            border-color: var(--brand-red);
            box-shadow: var(--shadow-sm);
        }
        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(215, 25, 32, 0.08);
            color: var(--brand-red);
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .feature-title {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .feature-desc {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.8;
        }

        /* ---------- Usage Scenario ---------- */
        .usage-scenario {
            background: var(--paper-white);
            border-top: 1px solid var(--divider);
            border-bottom: 1px solid var(--divider);
        }
        .usage-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--divider);
        }
        .usage-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .usage-img:hover img {
            transform: scale(1.02);
        }
        .usage-body {
            font-size: 0.95rem;
            line-height: 1.9;
            color: var(--text-gray);
        }
        .usage-body p {
            margin-bottom: 16px;
        }
        .usage-highlight {
            display: inline-block;
            background: rgba(200, 164, 92, 0.12);
            color: var(--charcoal);
            padding: 2px 8px;
            border-radius: 3px;
            font-weight: 500;
        }

        /* ---------- News Center ---------- */
        .news-list-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--divider);
            transition: background var(--transition-fast);
        }
        .news-list-item:hover {
            background: rgba(247, 245, 240, 0.5);
        }
        .news-date {
            font-family: var(--font-mono);
            font-size: 0.8rem;
            color: var(--text-light);
            min-width: 90px;
            padding-top: 4px;
        }
        .news-content {
            flex: 1;
        }
        .news-title {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--charcoal);
        }
        .news-title a {
            color: var(--charcoal);
            transition: color var(--transition-fast);
        }
        .news-title a:hover {
            color: var(--brand-red);
            text-decoration: underline;
        }
        .news-summary {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.7;
            margin-bottom: 6px;
        }

        /* ---------- Brand Intro ---------- */
        .brand-intro-block {
            background: rgba(200, 164, 92, 0.08);
            border-left: 4px solid var(--amber);
            border-radius: var(--radius);
            padding: 28px 32px;
            font-size: 1rem;
            line-height: 1.9;
            color: var(--charcoal);
        }
        .brand-intro-block .intro-label {
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--amber);
            margin-bottom: 8px;
        }

        /* ---------- Case Studies ---------- */
        .case-card {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            padding: 24px;
            margin-bottom: 16px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            gap: 20px;
        }
        .case-card:hover {
            border-color: var(--brand-red);
            box-shadow: var(--shadow-sm);
        }
        .case-img {
            width: 120px;
            flex-shrink: 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--divider);
        }
        .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-body {
            flex: 1;
        }
        .case-date {
            font-family: var(--font-mono);
            font-size: 0.78rem;
            color: var(--text-light);
            margin-bottom: 6px;
        }
        .case-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .case-summary {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.7;
        }

        /* ---------- Data Tools Showcase ---------- */
        .data-tools-section {
            background: var(--charcoal);
            color: #fff;
        }
        .data-tools-section .section-title {
            color: #fff;
        }
        .data-tools-section .section-subtitle {
            color: rgba(255, 255, 255, 0.6);
        }
        .tool-preview-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .tool-preview-card:hover {
            border-color: var(--brand-red);
            background: rgba(255, 255, 255, 0.06);
        }
        .tool-preview-card .tool-icon {
            font-size: 2rem;
            color: var(--amber);
            margin-bottom: 12px;
        }
        .tool-preview-card .tool-name {
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }
        .tool-preview-card .tool-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
        }

        /* ---------- Rules Preview ---------- */
        .rules-preview {
            background: var(--paper-white);
            border-top: 1px solid var(--divider);
        }
        .rule-step {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--divider);
        }
        .rule-step:last-child {
            border-bottom: none;
        }
        .rule-step-num {
            font-family: var(--font-mono);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--brand-red);
            min-width: 36px;
            flex-shrink: 0;
        }
        .rule-step-body {
            flex: 1;
        }
        .rule-step-title {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .rule-step-desc {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.7;
        }

        /* ---------- Pricing ---------- */
        .pricing-table-wrap {
            overflow-x: auto;
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            background: var(--paper-white);
        }
        .pricing-table {
            width: 100%;
            min-width: 640px;
            border-collapse: collapse;
        }
        .pricing-table th {
            background: var(--charcoal);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 16px 20px;
            text-align: left;
        }
        .pricing-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--divider);
            font-size: 0.9rem;
            color: var(--text-gray);
            vertical-align: top;
        }
        .pricing-table tr:last-child td {
            border-bottom: none;
        }
        .pricing-table tr:hover td {
            background: rgba(247, 245, 240, 0.5);
        }
        .pricing-table .plan-name {
            font-weight: 600;
            color: var(--charcoal);
            font-size: 1rem;
        }
        .pricing-table .plan-price {
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--brand-red);
            font-size: 1.2rem;
        }
        .check-icon {
            color: var(--success);
            font-weight: 700;
        }
        .cross-icon {
            color: var(--error);
            font-weight: 700;
        }

        /* ---------- FAQ ---------- */
        .faq-item {
            border-bottom: 1px solid var(--divider);
            padding: 16px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--charcoal);
            cursor: pointer;
            padding: 8px 0;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--brand-red);
        }
        .faq-question .faq-icon {
            font-size: 1rem;
            color: var(--brand-red);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.8;
            padding: 8px 0 8px 20px;
            border-left: 3px solid var(--amber);
            margin-left: 4px;
        }

        /* ---------- Final CTA ---------- */
        .final-cta {
            background-image: linear-gradient(rgba(25, 27, 31, 0.9), rgba(25, 27, 31, 0.9)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
            padding: 72px 0;
        }
        .final-cta .cta-title {
            font-family: var(--font-serif);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .final-cta .cta-sub {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
        }
        .final-cta .btn-brand {
            background: var(--brand-red);
            font-size: 1rem;
            padding: 14px 36px;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--charcoal);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .footer-desc {
            font-size: 0.85rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 420px;
        }
        .site-footer .footer-link {
            display: inline-block;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-right: 16px;
            margin-bottom: 6px;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-link:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 32px;
            padding-top: 20px;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.4);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ---------- Tag / Badge ---------- */
        .tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(215, 25, 32, 0.08);
            color: var(--brand-red);
            letter-spacing: 0.04em;
        }
        .tag-amber {
            background: rgba(200, 164, 92, 0.12);
            color: var(--amber);
        }
        .tag-green {
            background: rgba(46, 125, 91, 0.1);
            color: var(--success);
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1023px) {
            .hero-title {
                font-size: 2.4rem;
            }
            .bento-grid {
                grid-template-columns: 1fr;
            }
            .bento-main {
                grid-column: 1;
                grid-row: auto;
                min-height: 220px;
            }
            .bento-cta-bar {
                grid-column: 1;
            }
            .section-pad {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 767px) {
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-bento {
                padding: 48px 0 56px;
            }
            .bento-main {
                padding: 18px;
                min-height: 200px;
            }
            .bento-side {
                padding: 14px 16px;
            }
            .section-pad {
                padding: 40px 0;
            }
            .section-pad-sm {
                padding: 32px 0;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .stats-strip .stat-value {
                font-size: 1.5rem;
            }
            .case-card {
                flex-direction: column;
                padding: 18px;
            }
            .case-img {
                width: 100%;
                height: 160px;
                object-fit: cover;
            }
            .news-list-item {
                flex-direction: column;
                gap: 6px;
                padding: 14px 0;
            }
            .news-date {
                min-width: auto;
            }
            .brand-intro-block {
                padding: 20px;
                font-size: 0.9rem;
            }
            .navbar-nav-custom {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .mobile-drawer {
                display: block;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 8px;
            }
            .hero-cta-group .btn-brand,
            .hero-cta-group .btn-brand-outline {
                width: 100%;
                text-align: center;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .bento-grid {
                gap: 10px;
            }
            .bento-main {
                padding: 14px;
                min-height: 180px;
            }
            .ball {
                width: 30px;
                height: 30px;
                font-size: 0.75rem;
            }
        }

/* roulang page: category3 */
:root {
            --brand-red: #D71920;
            --brand-red-dark: #B31218;
            --charcoal: #191B1F;
            --charcoal-light: #2A2D33;
            --paper: #F7F5F0;
            --paper-white: #FFFDFB;
            --amber: #C8A45C;
            --amber-light: #E8D5B0;
            --text-gray: #6A6F78;
            --text-light: #9A9FA8;
            --divider: #ECE9E2;
            --success: #2E7D5B;
            --error: #C62828;
            --radius: 6px;
            --radius-lg: 8px;
            --radius-sm: 4px;
            --shadow-sm: 0 4px 16px rgba(25, 27, 31, 0.06);
            --shadow-md: 0 12px 30px rgba(25, 27, 31, 0.08);
            --shadow-lg: 0 20px 48px rgba(25, 27, 31, 0.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --font-serif: "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", "Consolas", "Courier New", monospace;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--charcoal);
            background-color: var(--paper);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--charcoal);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-red);
        }
        a:focus,
        button:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 3px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (min-width: 1400px) {
            .container-custom {
                max-width: 1280px;
            }
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background-color: rgba(247, 245, 240, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--divider);
            padding: 0;
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .navbar-brand-custom {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--charcoal);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand-custom .logo-mark {
            display: inline-block;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            line-height: 32px;
            text-align: center;
            letter-spacing: 0;
        }
        .navbar-brand-custom:hover {
            color: var(--charcoal);
        }
        .navbar-nav-custom {
            gap: 8px;
        }
        .navbar-nav-custom .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--charcoal);
            padding: 8px 16px !important;
            position: relative;
            transition: color var(--transition-fast);
        }
        .navbar-nav-custom .nav-link::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--brand-red);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }
        .navbar-nav-custom .nav-link:hover::after,
        .navbar-nav-custom .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-nav-custom .nav-link:hover {
            color: var(--brand-red);
        }
        .navbar-nav-custom .nav-link.active {
            color: var(--brand-red);
            font-weight: 600;
        }
        .header-cta {
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            background: var(--charcoal);
            color: #fff;
            font-weight: 500;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--brand-red);
            color: #fff;
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            border: 1px solid var(--divider);
            background: transparent;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            color: var(--charcoal);
            font-size: 1.2rem;
            line-height: 1;
        }
        .navbar-toggler-custom:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 2px;
        }
        .mobile-drawer {
            border-top: 1px solid var(--divider);
            padding: 16px 0;
            display: none;
        }
        .mobile-drawer.show {
            display: block;
        }
        .mobile-drawer .nav-link {
            display: block;
            padding: 12px 0;
            font-size: 1rem;
            color: var(--charcoal);
            border-bottom: 1px solid var(--divider);
        }
        .mobile-drawer .nav-link:hover,
        .mobile-drawer .nav-link.active {
            color: var(--brand-red);
        }

        /* ---------- Buttons ---------- */
        .btn-brand-red {
            background: var(--brand-red);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 26px;
            font-size: 0.95rem;
            font-weight: 600;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-brand-red:hover {
            background: var(--brand-red-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline-charcoal {
            background: transparent;
            color: var(--charcoal);
            border: 1px solid var(--charcoal);
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-charcoal:hover {
            background: var(--charcoal);
            color: #fff;
        }
        .btn-outline-brand {
            background: transparent;
            color: var(--brand-red);
            border: 1px solid var(--brand-red);
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-brand:hover {
            background: var(--brand-red);
            color: #fff;
        }

        /* ---------- Hero ---------- */
        .category-hero {
            position: relative;
            background-image: linear-gradient(rgba(25, 27, 31, 0.78), rgba(25, 27, 31, 0.4)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: 96px 0 80px;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .category-hero .hero-subtitle {
            font-size: 0.85rem;
            color: var(--amber-light);
            letter-spacing: 0.06em;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .category-hero .hero-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .hero-stat-row {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .hero-stat-item {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .hero-stat-item strong {
            display: block;
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            font-family: var(--font-mono);
        }

        /* ---------- Breadcrumb ---------- */
        .breadcrumb-bar {
            background: var(--paper-white);
            border-bottom: 1px solid var(--divider);
            padding: 14px 0;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-gray);
            margin: 0;
        }
        .breadcrumb-custom a {
            color: var(--text-gray);
        }
        .breadcrumb-custom a:hover {
            color: var(--brand-red);
        }
        .breadcrumb-custom .separator {
            color: var(--text-light);
            font-size: 0.7rem;
        }
        .breadcrumb-custom .current {
            color: var(--charcoal);
            font-weight: 600;
        }

        /* ---------- Section base ---------- */
        .section-block {
            padding: var(--section-pad) 0;
        }
        @media (max-width: 576px) {
            .section-block {
                padding: var(--section-pad-mobile) 0;
            }
        }
        .section-label {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--brand-red);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--charcoal);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-gray);
            max-width: 640px;
            line-height: 1.8;
        }

        /* ---------- Filter tags ---------- */
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 24px 0 32px;
        }
        .filter-tag {
            background: transparent;
            border: 1px solid var(--divider);
            color: var(--text-gray);
            border-radius: 20px;
            padding: 6px 18px;
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--brand-red);
            color: var(--brand-red);
        }
        .filter-tag.active {
            background: var(--charcoal);
            color: #fff;
            border-color: var(--charcoal);
        }

        /* ---------- Feature article ---------- */
        .feature-article-card {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            margin-bottom: 40px;
        }
        .feature-article-card:hover {
            border-color: var(--brand-red);
            box-shadow: var(--shadow-md);
        }
        .feature-article-card .feature-text {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .feature-article-card .feature-image {
            min-height: 300px;
            background-size: cover;
            background-position: center;
        }
        .article-date {
            font-size: 0.8rem;
            color: var(--text-light);
            font-family: var(--font-mono);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-date i {
            font-size: 0.75rem;
        }
        .feature-article-card .feature-title {
            font-size: 1.5rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
            color: var(--charcoal);
        }
        .feature-article-card .feature-title a {
            color: var(--charcoal);
        }
        .feature-article-card .feature-title a:hover {
            color: var(--brand-red);
        }
        .feature-article-card .feature-excerpt {
            font-size: 0.95rem;
            color: var(--text-gray);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .badge-category {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--brand-red);
            background: rgba(215, 25, 32, 0.08);
            border-radius: 3px;
            padding: 3px 10px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        /* ---------- Article card grid ---------- */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }
        .news-card {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            border-color: var(--brand-red);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .news-card .news-image {
            height: 180px;
            background-size: cover;
            background-position: center;
        }
        .news-card .news-body {
            padding: 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-title {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--charcoal);
        }
        .news-card .news-title a {
            color: var(--charcoal);
        }
        .news-card .news-title a:hover {
            color: var(--brand-red);
        }
        .news-card .news-excerpt {
            font-size: 0.88rem;
            color: var(--text-gray);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }
        .news-card .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--divider);
            padding-top: 14px;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .news-card .read-more {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--brand-red);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-card .read-more:hover {
            color: var(--brand-red-dark);
        }
        .news-card .read-more i {
            transition: transform var(--transition-fast);
        }
        .news-card .read-more:hover i {
            transform: translateX(4px);
        }

        /* ---------- Sidebar ---------- */
        .sidebar-card {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 24px;
        }
        .sidebar-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--charcoal);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-title::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--divider);
        }
        .quick-draw-box {
            background: #fcfbf8;
            border: 1px solid var(--divider);
            border-radius: 6px;
            padding: 16px;
            margin-bottom: 12px;
        }
        .quick-draw-box .draw-label {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-bottom: 6px;
        }
        .ball-row {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .number-ball {
            display: inline-block;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--charcoal);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            text-align: center;
            line-height: 30px;
            font-family: var(--font-mono);
        }
        .number-ball.red {
            background: var(--brand-red);
        }
        .number-ball.blue {
            background: #1E5FA8;
        }
        .number-ball.amber {
            background: var(--amber);
            color: var(--charcoal);
        }
        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--divider);
            font-size: 0.88rem;
            line-height: 1.6;
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-list a {
            color: var(--text-gray);
        }
        .sidebar-list a:hover {
            color: var(--brand-red);
        }
        .sidebar-rank-num {
            display: inline-block;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--paper);
            border: 1px solid var(--divider);
            text-align: center;
            line-height: 20px;
            font-size: 0.7rem;
            font-weight: 700;
            margin-right: 8px;
            color: var(--text-light);
            font-family: var(--font-mono);
        }
        .sidebar-rank-num.top {
            background: var(--brand-red);
            color: #fff;
            border-color: var(--brand-red);
        }

        /* ---------- Depth content block ---------- */
        .depth-block {
            background: var(--charcoal);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            margin: 48px 0;
        }
        .depth-block .depth-label {
            font-size: 0.8rem;
            color: var(--amber-light);
            font-weight: 700;
            letter-spacing: 0.06em;
            margin-bottom: 12px;
        }
        .depth-block .depth-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 20px;
            color: #fff;
        }
        .depth-block .depth-text {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.9;
            column-count: 2;
            column-gap: 40px;
        }
        @media (max-width: 768px) {
            .depth-block .depth-text {
                column-count: 1;
            }
        }

        /* ---------- Pagination ---------- */
        .pagination-custom {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .pagination-custom .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            border: 1px solid var(--divider);
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-gray);
            background: var(--paper-white);
            transition: all var(--transition-fast);
            padding: 0 12px;
        }
        .pagination-custom .page-btn:hover {
            border-color: var(--brand-red);
            color: var(--brand-red);
        }
        .pagination-custom .page-btn.active {
            background: var(--charcoal);
            color: #fff;
            border-color: var(--charcoal);
        }
        .pagination-custom .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ---------- FAQ ---------- */
        .faq-section {
            background: var(--paper-white);
            border-top: 1px solid var(--divider);
            border-bottom: 1px solid var(--divider);
        }
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--divider);
            background: transparent;
        }
        .accordion-custom .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-custom .accordion-header {
            margin: 0;
        }
        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--charcoal);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 18px 0;
            border: none;
            box-shadow: none;
            text-align: left;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .accordion-custom .accordion-button:hover {
            color: var(--brand-red);
        }
        .accordion-custom .accordion-button::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            transition: transform var(--transition-base);
            margin-left: 12px;
            font-size: 1rem;
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .accordion-custom .accordion-button:focus {
            outline: none;
        }
        .accordion-custom .accordion-body {
            padding: 0 0 18px;
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.8;
        }

        /* ---------- CTA Section ---------- */
        .cta-section {
            background: linear-gradient(135deg, var(--charcoal) 0%, #2A2D33 100%);
            padding: 64px 0;
            border-radius: var(--radius-lg);
            margin: 64px 0;
        }
        .cta-section .cta-title {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section .cta-desc {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .subscribe-form .form-control {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            font-size: 0.9rem;
            min-width: 240px;
            flex: 1;
            transition: border-color var(--transition-fast);
        }
        .subscribe-form .form-control::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .subscribe-form .form-control:focus {
            border-color: var(--brand-red);
            outline: none;
            box-shadow: none;
        }
        .subscribe-form .btn-subscribe {
            background: var(--brand-red);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: background var(--transition-fast);
            white-space: nowrap;
        }
        .subscribe-form .btn-subscribe:hover {
            background: var(--brand-red-dark);
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--charcoal);
            color: rgba(255, 255, 255, 0.6);
            padding: 56px 0 24px;
            margin-top: 80px;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-desc {
            font-size: 0.88rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
        }
        .site-footer .footer-link {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-link:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 40px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            justify-content: space-between;
            align-items: center;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ---------- Responsive adjustments ---------- */
        @media (max-width: 992px) {
            .category-hero {
                padding: 64px 0 56px;
                min-height: 320px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .feature-article-card {
                grid-template-columns: 1fr;
            }
            .feature-article-card .feature-image {
                min-height: 220px;
                order: -1;
            }
            .depth-block {
                padding: 32px 28px;
            }
        }
        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .hero-stat-row {
                gap: 16px;
            }
            .depth-block .depth-title {
                font-size: 22px;
            }
            .section-title {
                font-size: 24px;
            }
        }
        @media (max-width: 576px) {
            .category-hero {
                padding: 48px 0 40px;
                min-height: 280px;
            }
            .category-hero h1 {
                font-size: 22px;
            }
            .category-hero .hero-desc {
                font-size: 0.9rem;
            }
            .filter-tags {
                gap: 6px;
            }
            .filter-tag {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .feature-article-card .feature-text {
                padding: 20px;
            }
            .depth-block {
                padding: 24px 20px;
                border-radius: var(--radius);
            }
            .depth-block .depth-title {
                font-size: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --brand-red: #D71920;
            --brand-red-dark: #B31218;
            --charcoal: #191B1F;
            --charcoal-light: #2A2D33;
            --paper: #F7F5F0;
            --paper-white: #FFFDFB;
            --amber: #C8A45C;
            --amber-light: #E8D5B0;
            --text-gray: #6A6F78;
            --text-light: #9A9FA8;
            --divider: #ECE9E2;
            --success: #2E7D5B;
            --error: #C62828;
            --radius: 6px;
            --radius-lg: 8px;
            --radius-sm: 4px;
            --shadow-sm: 0 4px 16px rgba(25, 27, 31, 0.06);
            --shadow-md: 0 12px 30px rgba(25, 27, 31, 0.08);
            --shadow-lg: 0 20px 48px rgba(25, 27, 31, 0.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --font-serif: "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", "Consolas", "Courier New", monospace;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--charcoal);
            background-color: var(--paper);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--charcoal);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-red);
        }
        a:focus,
        button:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 3px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (min-width: 1200px) {
            .container-custom {
                max-width: 1280px;
            }
        }
        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background-color: rgba(247, 245, 240, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--divider);
            padding: 0;
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .navbar-brand-custom {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--charcoal);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand-custom .logo-mark {
            display: inline-block;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            line-height: 32px;
            text-align: center;
            letter-spacing: 0;
        }
        .navbar-brand-custom:hover {
            color: var(--charcoal);
        }
        .navbar-nav-custom {
            gap: 8px;
        }
        .navbar-nav-custom .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--charcoal);
            padding: 8px 16px !important;
            position: relative;
            transition: color var(--transition-fast);
        }
        .navbar-nav-custom .nav-link::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--brand-red);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }
        .navbar-nav-custom .nav-link:hover::after,
        .navbar-nav-custom .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-nav-custom .nav-link:hover {
            color: var(--brand-red);
        }
        .navbar-nav-custom .nav-link.active {
            color: var(--brand-red);
            font-weight: 600;
        }
        .header-cta {
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            background: var(--charcoal);
            color: #fff;
            font-weight: 500;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--brand-red);
            color: #fff;
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            border: 1px solid var(--divider);
            background: transparent;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            color: var(--charcoal);
            font-size: 1.2rem;
            line-height: 1;
        }
        .navbar-toggler-custom:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 2px;
        }
        .mobile-drawer {
            border-top: 1px solid var(--divider);
            padding: 16px 0;
            display: none;
        }
        .mobile-drawer.show {
            display: block;
        }
        .mobile-drawer .nav-link {
            display: block;
            padding: 12px 0;
            font-size: 1rem;
            color: var(--charcoal);
            border-bottom: 1px solid var(--divider);
        }
        .mobile-drawer .nav-link:hover,
        .mobile-drawer .nav-link.active {
            color: var(--brand-red);
        }
        /* ---------- Hero ---------- */
        .hero-section {
            background-image: linear-gradient(180deg, rgba(25,27,31,0.85) 0%, rgba(25,27,31,0.45) 60%, rgba(25,27,31,0.1) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: 80px 0 72px;
            position: relative;
        }
        .breadcrumb-site {
            background: transparent;
            margin-bottom: 12px;
            padding: 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
        }
        .breadcrumb-site a {
            color: rgba(255,255,255,0.85);
        }
        .breadcrumb-site a:hover {
            color: #fff;
        }
        .breadcrumb-site .separator {
            margin: 0 8px;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 700;
            font-family: var(--font-serif);
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.85);
            max-width: 680px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .btn-brand {
            background: var(--brand-red);
            border: none;
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: background var(--transition-fast), transform var(--transition-fast);
            display: inline-block;
        }
        .btn-brand:hover {
            background: var(--brand-red-dark);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-light-custom {
            border: 1px solid rgba(255,255,255,0.7);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: all var(--transition-fast);
            display: inline-block;
        }
        .btn-outline-light-custom:hover {
            background: #fff;
            color: var(--charcoal);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .lottery-ball {
            display: inline-block;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            line-height: 36px;
            text-align: center;
            font-family: var(--font-mono);
            margin: 0 3px;
            transition: transform var(--transition-fast);
        }
        .lottery-ball.blue {
            background: #1E4F8A;
        }
        .lottery-ball.amber {
            background: var(--amber);
            color: var(--charcoal);
        }
        /* ---------- Section base ---------- */
        .section {
            padding: var(--section-pad) 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            font-family: var(--font-serif);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-subtitle {
            color: var(--text-gray);
            font-size: 1rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        /* ---------- Filter bar ---------- */
        .filter-bar {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin-bottom: 40px;
            box-shadow: var(--shadow-sm);
        }
        .filter-bar .form-label {
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--charcoal);
            margin-bottom: 6px;
        }
        .form-control-custom {
            border: 1px solid var(--divider);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 0.95rem;
            color: var(--charcoal);
            background: #fff;
            transition: border-color var(--transition-fast);
        }
        .form-control-custom:focus {
            border-color: var(--brand-red);
            outline: none;
            box-shadow: none;
        }
        .filter-btn {
            background: var(--charcoal);
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            transition: background var(--transition-fast);
            white-space: nowrap;
        }
        .filter-btn:hover {
            background: var(--brand-red);
            color: #fff;
        }
        /* ---------- Table ---------- */
        .result-table {
            background: var(--paper-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .result-table .table {
            margin-bottom: 0;
        }
        .result-table .table thead th {
            background: #F1EFEA;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--charcoal);
            border-bottom: 1px solid var(--divider);
            padding: 12px 16px;
            white-space: nowrap;
        }
        .result-table .table tbody td {
            padding: 12px 16px;
            vertical-align: middle;
            border-bottom: 1px solid var(--divider);
            font-size: 0.95rem;
        }
        .result-table .table tbody tr:hover {
            background: #FAF9F7;
        }
        .result-table .ball-small {
            display: inline-block;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-weight: 700;
            font-size: 12px;
            line-height: 28px;
            text-align: center;
            font-family: var(--font-mono);
            margin: 0 2px;
        }
        .result-table .ball-small.blue {
            background: #1E4F8A;
        }
        .result-table .ball-small.amber {
            background: var(--amber);
            color: var(--charcoal);
        }
        .detail-trigger {
            color: var(--brand-red);
            font-size: 0.9rem;
            cursor: pointer;
            background: none;
            border: none;
            padding: 0;
            font-weight: 500;
            transition: color var(--transition-fast);
        }
        .detail-trigger:hover {
            color: var(--brand-red-dark);
        }
        .detail-row td {
            background: #FAF9F7;
            padding: 16px;
            font-size: 0.9rem;
            color: var(--text-gray);
        }
        .detail-row.hidden {
            display: none;
        }
        /* ---------- Sidebar ---------- */
        .sidebar-widget {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-widget h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--charcoal);
        }
        .sidebar-widget ul {
            list-style: none;
            padding-left: 0;
            margin-bottom: 0;
        }
        .sidebar-widget ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--divider);
            font-size: 0.95rem;
            color: var(--text-gray);
        }
        .sidebar-widget ul li:last-child {
            border-bottom: none;
        }
        .sidebar-widget .fas {
            color: var(--brand-red);
            margin-right: 8px;
            width: 16px;
            text-align: center;
        }
        .subscribe-box input {
            border: none;
            border-bottom: 1px solid var(--divider);
            border-radius: 0;
            padding: 10px 0;
            width: 100%;
            background: transparent;
            transition: border-color var(--transition-fast);
            margin-bottom: 12px;
        }
        .subscribe-box input:focus {
            border-color: var(--brand-red);
            outline: none;
        }
        /* ---------- Cover image block ---------- */
        .cover-block {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .cover-block img {
            width: 100%;
            object-fit: cover;
        }
        .cover-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px;
            background: linear-gradient(0deg, rgba(25,27,31,0.8), transparent);
            color: #fff;
            font-weight: 500;
        }
        /* ---------- Steps ---------- */
        .step-number {
            display: inline-block;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--charcoal);
            color: #fff;
            font-weight: 700;
            line-height: 40px;
            text-align: center;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }
        .step-item {
            padding: 24px;
            border-left: 3px solid var(--brand-red);
            background: var(--paper-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        /* ---------- FAQ ---------- */
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--divider);
            background: transparent;
            margin-bottom: 0;
        }
        .accordion-custom .accordion-button {
            background: transparent;
            padding: 20px 0;
            font-weight: 600;
            color: var(--charcoal);
            font-size: 1.05rem;
            border: none;
            box-shadow: none;
            transition: color var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--brand-red);
            background: transparent;
        }
        .accordion-custom .accordion-button::after {
            color: var(--brand-red);
        }
        .accordion-custom .accordion-button:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 2px;
        }
        .accordion-custom .accordion-body {
            padding: 0 0 24px 0;
            color: var(--text-gray);
            line-height: 1.8;
        }
        /* ---------- Pagination ---------- */
        .pagination-custom .page-link {
            border: 1px solid var(--divider);
            color: var(--charcoal);
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            margin: 0 4px;
            background: #fff;
            transition: all var(--transition-fast);
        }
        .pagination-custom .page-link:hover {
            border-color: var(--brand-red);
            color: var(--brand-red);
            background: #fff;
        }
        .pagination-custom .page-item.active .page-link {
            background: var(--brand-red);
            border-color: var(--brand-red);
            color: #fff;
        }
        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--charcoal);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 30px;
            margin-top: 80px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255,255,255,0.6);
        }
        .footer-link {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            display: block;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-link:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: 40px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.6);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        /* ---------- Responsive ---------- */
        @media (max-width: 991.98px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .section {
                padding: 56px 0;
            }
            .sidebar-order-mobile {
                order: -1;
                margin-bottom: 32px;
            }
        }
        @media (max-width: 575.98px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .section {
                padding: 32px 0;
            }
            .container-custom {
                padding: 0 16px;
            }
            .filter-bar {
                padding: 16px;
            }
            .result-table {
                overflow-x: auto;
            }
            .result-table .table {
                min-width: 800px;
            }
        }

/* roulang page: category2 */
:root {
            --brand-red: #D71920;
            --brand-red-dark: #B31218;
            --charcoal: #191B1F;
            --charcoal-light: #2A2D33;
            --paper: #F7F5F0;
            --paper-white: #FFFDFB;
            --amber: #C8A45C;
            --amber-light: #E8D5B0;
            --text-gray: #6A6F78;
            --text-light: #9A9FA8;
            --divider: #ECE9E2;
            --success: #2E7D5B;
            --error: #C62828;
            --radius: 6px;
            --radius-lg: 8px;
            --radius-sm: 4px;
            --shadow-sm: 0 4px 16px rgba(25, 27, 31, 0.06);
            --shadow-md: 0 12px 30px rgba(25, 27, 31, 0.08);
            --shadow-lg: 0 20px 48px rgba(25, 27, 31, 0.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --font-serif: "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", "Consolas", "Courier New", monospace;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--charcoal);
            background-color: var(--paper);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--charcoal);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-red);
        }
        a:focus,
        button:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 3px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (min-width: 1400px) {
            .container-custom {
                max-width: 1280px;
            }
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background-color: rgba(247, 245, 240, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--divider);
            padding: 0;
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .navbar-brand-custom {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--charcoal);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand-custom .logo-mark {
            display: inline-block;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            line-height: 32px;
            text-align: center;
            letter-spacing: 0;
        }
        .navbar-brand-custom:hover {
            color: var(--charcoal);
        }
        .navbar-nav-custom {
            gap: 8px;
        }
        .navbar-nav-custom .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--charcoal);
            padding: 8px 16px !important;
            position: relative;
            transition: color var(--transition-fast);
        }
        .navbar-nav-custom .nav-link::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--brand-red);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }
        .navbar-nav-custom .nav-link:hover::after,
        .navbar-nav-custom .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-nav-custom .nav-link:hover {
            color: var(--brand-red);
        }
        .navbar-nav-custom .nav-link.active {
            color: var(--brand-red);
            font-weight: 600;
        }
        .header-cta {
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            background: var(--charcoal);
            color: #fff;
            font-weight: 500;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--brand-red);
            color: #fff;
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            border: 1px solid var(--divider);
            background: transparent;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            color: var(--charcoal);
            font-size: 1.2rem;
            line-height: 1;
        }
        .navbar-toggler-custom:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 2px;
        }
        .mobile-drawer {
            border-top: 1px solid var(--divider);
            padding: 16px 0;
            display: none;
        }
        .mobile-drawer.show {
            display: block;
        }
        .mobile-drawer .nav-link {
            display: block;
            padding: 12px 0;
            font-size: 1rem;
            color: var(--charcoal);
            border-bottom: 1px solid var(--divider);
        }
        .mobile-drawer .nav-link.active {
            color: var(--brand-red);
            font-weight: 600;
        }
        .mobile-drawer .nav-link:hover {
            color: var(--brand-red);
        }
        @media (max-width: 991px) {
            .navbar-nav-custom .nav-link {
                padding: 8px 10px !important;
                font-size: 0.85rem;
            }
            .header-cta {
                font-size: 0.8rem;
                padding: 6px 14px;
            }
        }

        /* Breadcrumb */
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.85rem;
            color: var(--text-gray);
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-custom li:not(:last-child)::after {
            content: '/';
            color: var(--text-light);
        }
        .breadcrumb-custom a {
            color: var(--text-gray);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom a:hover {
            color: var(--brand-red);
        }
        .breadcrumb-custom .current {
            color: var(--text-light);
        }

        /* Hero Section */
        .page-hero {
            position: relative;
            padding: 56px 0 64px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(25, 27, 31, 0.85) 0%, rgba(25, 27, 31, 0.55) 100%);
            z-index: 1;
        }
        .page-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            font-family: var(--font-serif);
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: #fff;
        }
        .page-hero .hero-sub {
            font-size: 1.05rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.8);
            max-width: 780px;
            margin-bottom: 20px;
        }
        .page-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
        }
        .page-hero .hero-meta i {
            margin-right: 4px;
            color: var(--amber);
        }
        @media (max-width: 767px) {
            .page-hero {
                padding: 40px 0 48px;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero .hero-sub {
                font-size: 0.95rem;
            }
        }

        /* Section Base */
        .section-block {
            padding: var(--section-pad) 0;
        }
        .section-block-sm {
            padding: 48px 0;
        }
        .section-title {
            font-family: var(--font-serif);
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.4;
            color: var(--charcoal);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-gray);
            line-height: 1.9;
            max-width: 820px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--brand-red);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        @media (max-width: 767px) {
            .section-block {
                padding: var(--section-pad-mobile) 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* Filter Panel */
        .filter-panel {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
        }
        .filter-panel .filter-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--charcoal);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .filter-panel .filter-label i {
            color: var(--brand-red);
            font-size: 0.75rem;
        }
        .filter-panel .form-select,
        .filter-panel .form-control {
            border: 1px solid var(--divider);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            color: var(--charcoal);
            padding: 10px 14px;
            background-color: #fff;
            transition: border-color var(--transition-fast);
        }
        .filter-panel .form-select:focus,
        .filter-panel .form-control:focus {
            border-color: var(--brand-red);
            box-shadow: none;
            outline: none;
        }
        .filter-panel .btn-filter {
            background: var(--brand-red);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .filter-panel .btn-filter:hover {
            background: var(--brand-red-dark);
            transform: translateY(-1px);
        }
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 4px;
        }
        .filter-tag {
            display: inline-block;
            padding: 6px 16px;
            border: 1px solid var(--divider);
            border-radius: 20px;
            font-size: 0.82rem;
            color: var(--text-gray);
            cursor: pointer;
            transition: all var(--transition-fast);
            background: var(--paper-white);
            user-select: none;
        }
        .filter-tag:hover {
            border-color: var(--brand-red);
            color: var(--brand-red);
        }
        .filter-tag.active {
            background: var(--brand-red);
            color: #fff;
            border-color: var(--brand-red);
        }
        @media (max-width: 767px) {
            .filter-panel {
                padding: 20px;
            }
            .filter-panel .btn-filter {
                width: 100%;
            }
        }

        /* Chart Container */
        .chart-container {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .chart-container:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--amber-light);
        }
        .chart-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            gap: 12px;
        }
        .chart-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--charcoal);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .chart-title i {
            color: var(--brand-red);
            font-size: 0.9rem;
        }
        .chart-legend {
            display: flex;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--text-gray);
        }
        .chart-legend span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .legend-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            display: inline-block;
        }
        .legend-dot.red {
            background: var(--brand-red);
        }
        .legend-dot.amber {
            background: var(--amber);
        }
        .legend-dot.slate {
            background: #8A8F98;
        }
        .svg-chart-wrap {
            width: 100%;
            overflow-x: auto;
        }
        .svg-chart-wrap svg {
            min-width: 660px;
            display: block;
            margin: 0 auto;
        }

        /* Bar Chart */
        .bar-chart {
            display: flex;
            align-items: flex-end;
            gap: 12px;
            justify-content: center;
            padding: 12px 0;
            flex-wrap: wrap;
        }
        .bar-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            min-width: 44px;
        }
        .bar-item .bar-value {
            font-family: var(--font-mono);
            font-size: 0.8rem;
            color: var(--text-gray);
        }
        .bar-item .bar-fill {
            width: 36px;
            border-radius: 4px 4px 0 0;
            background: linear-gradient(180deg, var(--brand-red) 0%, #F5A3A6 100%);
            transition: height 0.5s var(--transition-base);
            min-height: 8px;
        }
        .bar-item .bar-fill.hot {
            background: linear-gradient(180deg, var(--brand-red) 0%, #E8585D 100%);
        }
        .bar-item .bar-fill.warm {
            background: linear-gradient(180deg, var(--amber) 0%, var(--amber-light) 100%);
        }
        .bar-item .bar-label {
            font-family: var(--font-mono);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--charcoal);
        }
        @media (max-width: 575px) {
            .bar-chart {
                gap: 6px;
            }
            .bar-item {
                min-width: 32px;
            }
            .bar-item .bar-fill {
                width: 26px;
            }
        }

        /* Tool Cards */
        .tool-card {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            height: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .tool-card:hover {
            border-color: var(--brand-red);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .tool-card .tool-icon {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: rgba(215, 25, 32, 0.08);
            color: var(--brand-red);
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .tool-card .tool-name {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--charcoal);
            margin: 0;
        }
        .tool-card .tool-desc {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.8;
            flex-grow: 1;
        }
        .tool-card .tool-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--brand-red);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }
        .tool-card .tool-link:hover {
            gap: 10px;
        }

        /* Data Table */
        .data-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--divider);
            background: var(--paper-white);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
            min-width: 760px;
        }
        .data-table thead {
            background: #F2EFE8;
        }
        .data-table thead th {
            padding: 14px 18px;
            font-weight: 600;
            font-size: 0.82rem;
            color: var(--charcoal);
            text-align: left;
            border-bottom: 2px solid var(--divider);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .data-table tbody td {
            padding: 14px 18px;
            border-bottom: 1px solid var(--divider);
            color: var(--charcoal);
            white-space: nowrap;
        }
        .data-table tbody tr:hover {
            background: #FCFAF7;
        }
        .data-table .num-ball {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-family: var(--font-mono);
            font-size: 0.78rem;
            font-weight: 600;
            margin-right: 4px;
        }
        .data-table .num-ball.amber {
            background: var(--amber);
        }
        .data-table .period {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--charcoal);
        }
        .data-table .sum-value {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--brand-red);
        }
        .data-table .span-value {
            font-family: var(--font-mono);
            color: var(--text-gray);
        }
        .pagination-custom {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .pagination-custom .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 36px;
            height: 36px;
            padding: 0 12px;
            border: 1px solid var(--divider);
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            color: var(--text-gray);
            transition: all var(--transition-fast);
            cursor: pointer;
            background: var(--paper-white);
            user-select: none;
        }
        .pagination-custom .page-btn:hover {
            border-color: var(--brand-red);
            color: var(--brand-red);
        }
        .pagination-custom .page-btn.active {
            background: var(--brand-red);
            border-color: var(--brand-red);
            color: #fff;
            font-weight: 600;
        }
        .pagination-custom .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }
        .step-item {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            position: relative;
        }
        .step-item:hover {
            border-color: var(--amber);
            box-shadow: var(--shadow-sm);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            font-family: var(--font-mono);
            flex-shrink: 0;
        }
        .step-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--charcoal);
        }
        .step-desc {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.8;
        }

        /* Sidebar */
        .sidebar-widget {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-widget .widget-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--charcoal);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget .widget-title i {
            color: var(--brand-red);
            font-size: 0.85rem;
        }
        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--divider);
            font-size: 0.88rem;
            color: var(--text-gray);
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-list .value {
            font-family: var(--font-mono);
            color: var(--charcoal);
            font-weight: 600;
        }
        .sidebar-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(46, 125, 91, 0.12);
            color: var(--success);
        }
        .sidebar-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            color: var(--text-gray);
            transition: all var(--transition-fast);
        }
        .sidebar-links a:hover {
            background: rgba(215, 25, 32, 0.05);
            color: var(--brand-red);
        }
        .sidebar-links a i {
            width: 18px;
            text-align: center;
            color: var(--text-light);
        }

        /* Tools Long Text */
        .tools-content {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            box-shadow: var(--shadow-sm);
        }
        .tools-content h2 {
            font-family: var(--font-serif);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--charcoal);
            margin-bottom: 16px;
        }
        .tools-content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--charcoal);
            margin-top: 28px;
            margin-bottom: 12px;
        }
        .tools-content p {
            color: var(--text-gray);
            line-height: 1.95;
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .tools-content ul {
            padding-left: 20px;
            color: var(--text-gray);
            font-size: 0.95rem;
            line-height: 1.95;
            margin-bottom: 16px;
        }
        .tools-content ul li {
            margin-bottom: 6px;
        }
        @media (max-width: 767px) {
            .tools-content {
                padding: 24px 20px;
            }
            .tools-content h2 {
                font-size: 1.3rem;
            }
        }

        /* FAQ */
        .faq-list .accordion-item {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: none;
        }
        .faq-list .accordion-button {
            background: transparent;
            color: var(--charcoal);
            font-weight: 600;
            font-size: 1rem;
            padding: 18px 24px;
            box-shadow: none;
            border: none;
            border-radius: var(--radius-lg) !important;
        }
        .faq-list .accordion-button:not(.collapsed) {
            background: transparent;
            color: var(--brand-red);
            box-shadow: none;
        }
        .faq-list .accordion-button:focus {
            box-shadow: none;
            outline: none;
        }
        .faq-list .accordion-button::after {
            color: var(--text-light);
        }
        .faq-list .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-gray);
            font-size: 0.92rem;
            line-height: 1.9;
        }

        /* CTA Section */
        .cta-section {
            background: var(--charcoal);
            color: #fff;
            padding: 56px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(215, 25, 32, 0.12);
            z-index: 1;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 2;
        }
        .cta-title {
            font-family: var(--font-serif);
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-desc {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 24px;
        }
        .btn-outline-light-custom {
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            background: transparent;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-light-custom:hover {
            border-color: var(--brand-red);
            background: var(--brand-red);
            color: #fff;
        }
        .btn-solid-light-custom {
            border: none;
            color: var(--charcoal);
            background: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-solid-light-custom:hover {
            background: var(--brand-red);
            color: #fff;
        }

        /* Footer */
        .site-footer {
            background: var(--charcoal);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer .footer-desc {
            font-size: 0.88rem;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-link {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
            display: block;
        }
        .site-footer .footer-link:hover {
            color: var(--brand-red);
        }
        .site-footer .footer-bottom {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--brand-red);
        }
        @media (max-width: 767px) {
            .site-footer {
                padding: 32px 0 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

/* roulang page: category4 */
:root {
            --brand-red: #D71920;
            --brand-red-dark: #B31218;
            --charcoal: #191B1F;
            --charcoal-light: #2A2D33;
            --paper: #F7F5F0;
            --paper-white: #FFFDFB;
            --amber: #C8A45C;
            --amber-light: #E8D5B0;
            --text-gray: #6A6F78;
            --text-light: #9A9FA8;
            --divider: #ECE9E2;
            --success: #2E7D5B;
            --error: #C62828;
            --radius: 6px;
            --radius-lg: 8px;
            --radius-sm: 4px;
            --shadow-sm: 0 4px 16px rgba(25, 27, 31, 0.06);
            --shadow-md: 0 12px 30px rgba(25, 27, 31, 0.08);
            --shadow-lg: 0 20px 48px rgba(25, 27, 31, 0.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --font-serif: "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", "Consolas", "Courier New", monospace;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--charcoal);
            background-color: var(--paper);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--charcoal);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-red);
        }
        a:focus,
        button:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 3px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: var(--section-pad) 0;
        }
        @media (max-width: 575.98px) {
            .section-pad {
                padding: var(--section-pad-mobile) 0;
            }
            :root {
                --section-pad: 48px;
                --section-pad-mobile: 32px;
            }
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background-color: rgba(247, 245, 240, 0.97);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--divider);
            padding: 0;
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .navbar-brand-custom {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--charcoal);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand-custom .logo-mark {
            display: inline-block;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            line-height: 32px;
            text-align: center;
            letter-spacing: 0;
        }
        .navbar-brand-custom:hover {
            color: var(--charcoal);
        }
        .navbar-nav-custom {
            gap: 4px;
        }
        .navbar-nav-custom .nav-link {
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--charcoal);
            padding: 8px 14px !important;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }
        .navbar-nav-custom .nav-link::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--brand-red);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }
        .navbar-nav-custom .nav-link:hover::after,
        .navbar-nav-custom .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-nav-custom .nav-link:hover {
            color: var(--brand-red);
        }
        .navbar-nav-custom .nav-link.active {
            color: var(--brand-red);
            font-weight: 600;
        }
        .header-cta {
            font-size: 0.88rem;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            background: var(--charcoal);
            color: #fff;
            font-weight: 500;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--brand-red);
            color: #fff;
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            border: 1px solid var(--divider);
            background: transparent;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            color: var(--charcoal);
            font-size: 1.2rem;
            line-height: 1;
        }
        .navbar-toggler-custom:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 2px;
        }
        .mobile-drawer {
            border-top: 1px solid var(--divider);
            padding: 16px 0;
            display: none;
        }
        .mobile-drawer.show {
            display: block;
        }
        .mobile-drawer .nav-link {
            display: block;
            padding: 12px 0;
            font-size: 1rem;
            color: var(--charcoal);
            border-bottom: 1px solid var(--divider);
        }
        .mobile-drawer .nav-link:hover,
        .mobile-drawer .nav-link.active {
            color: var(--brand-red);
        }

        /* ---------- Breadcrumb ---------- */
        .breadcrumb-bar {
            background: transparent;
            padding: 20px 0 0 0;
            margin: 0;
        }
        .breadcrumb-custom {
            font-size: 0.85rem;
            color: var(--text-gray);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb-custom li a {
            color: var(--text-gray);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom li a:hover {
            color: var(--brand-red);
        }
        .breadcrumb-custom li.separator {
            color: var(--text-light);
        }
        .breadcrumb-custom li.current {
            color: var(--brand-red);
            font-weight: 500;
        }

        /* ---------- Page Hero ---------- */
        .page-hero {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
            background-image: linear-gradient(105deg, rgba(25, 27, 31, 0.88) 0%, rgba(25, 27, 31, 0.45) 60%, rgba(25, 27, 31, 0.2) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            margin-bottom: 32px;
            padding: 48px;
        }
        .page-hero .hero-badge {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(215, 25, 32, 0.92);
            color: #fff;
            margin-bottom: 18px;
        }
        .page-hero h1 {
            font-family: var(--font-serif);
            font-size: 2.4rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .page-hero .hero-sub {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.85;
            max-width: 640px;
            margin-bottom: 24px;
        }
        .page-hero .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-brand {
            background: var(--brand-red);
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 600;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-brand:hover,
        .btn-brand:focus {
            background: var(--brand-red-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline-charcoal {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-charcoal:hover,
        .btn-outline-charcoal:focus {
            background: #fff;
            border-color: #fff;
            color: var(--charcoal);
        }

        /* ---------- Section Titles ---------- */
        .section-title {
            font-family: var(--font-serif);
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--charcoal);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
            line-height: 1.4;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-gray);
            line-height: 1.85;
            margin-bottom: 0;
        }

        /* ---------- Rule Layout / Two Column ---------- */
        .rules-layout {
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 40px;
            align-items: start;
        }
        .rules-toc {
            position: sticky;
            top: 90px;
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
        }
        .rules-toc .toc-title {
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            color: var(--charcoal);
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .rules-toc a {
            display: block;
            padding: 10px 12px;
            font-size: 0.9rem;
            color: var(--text-gray);
            border-left: 2px solid transparent;
            transition: all var(--transition-fast);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }
        .rules-toc a:hover,
        .rules-toc a.active-anchor {
            color: var(--brand-red);
            border-left-color: var(--brand-red);
            background: rgba(215, 25, 32, 0.04);
            font-weight: 500;
        }
        .rules-content {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
        }
        .rules-content .rule-block {
            margin-bottom: 48px;
        }
        .rules-content .rule-block:last-child {
            margin-bottom: 0;
        }
        .rules-content h2 {
            font-family: var(--font-serif);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--charcoal);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--brand-red);
            display: inline-block;
            letter-spacing: 0.02em;
        }
        .rules-content h3 {
            font-size: 1.08rem;
            font-weight: 600;
            color: var(--charcoal);
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .rules-content p {
            color: var(--text-gray);
            line-height: 1.95;
            margin-bottom: 14px;
        }
        .rules-content .highlight-text {
            color: var(--charcoal);
            font-weight: 500;
        }
        .rules-content ul,
        .rules-content ol {
            color: var(--text-gray);
            line-height: 1.9;
            padding-left: 1.2rem;
            margin-bottom: 16px;
        }
        .rules-content li {
            margin-bottom: 8px;
        }
        .number-ball-display {
            display: flex;
            gap: 10px;
            margin: 20px 0;
            flex-wrap: wrap;
        }
        .number-ball-display .ball {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
        }
        .number-ball-display .ball.red {
            background: var(--brand-red);
        }
        .number-ball-display .ball.blue {
            background: #3B6EA8;
        }
        .number-ball-display .ball.gray {
            background: var(--charcoal);
        }
        .number-ball-display .ball.gold {
            background: var(--amber);
        }
        .rule-table-wrap {
            overflow-x: auto;
            margin: 20px 0 24px;
        }
        .rule-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        .rule-table thead th {
            background: var(--charcoal);
            color: #fff;
            padding: 12px 14px;
            text-align: left;
            font-weight: 600;
            white-space: nowrap;
            border: 1px solid var(--charcoal-light);
        }
        .rule-table tbody td {
            padding: 12px 14px;
            border: 1px solid var(--divider);
            color: var(--text-gray);
            vertical-align: top;
        }
        .rule-table tbody tr:nth-child(even) {
            background: rgba(247, 245, 240, 0.5);
        }
        .rule-table tbody tr:hover {
            background: rgba(215, 25, 32, 0.03);
        }
        .step-list {
            list-style: none;
            padding: 0;
            margin: 20px 0;
            counter-reset: step-counter;
        }
        .step-list li {
            position: relative;
            padding: 20px 20px 20px 72px;
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            margin-bottom: 14px;
            counter-increment: step-counter;
            background: var(--paper-white);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .step-list li::before {
            content: counter(step-counter);
            position: absolute;
            left: 18px;
            top: 18px;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
        }
        .step-list li:hover {
            border-color: var(--brand-red);
            box-shadow: var(--shadow-sm);
        }
        .step-list li strong {
            display: block;
            color: var(--charcoal);
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .step-list li span {
            color: var(--text-gray);
            font-size: 0.92rem;
            line-height: 1.8;
        }
        .attention-box {
            background: rgba(215, 25, 32, 0.05);
            border-left: 4px solid var(--brand-red);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 20px 24px;
            margin: 24px 0;
        }
        .attention-box .attention-title {
            font-weight: 600;
            color: var(--brand-red);
            margin-bottom: 8px;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .attention-box p {
            color: var(--text-gray);
            font-size: 0.92rem;
            margin-bottom: 6px;
            line-height: 1.85;
        }

        /* ---------- FAQ ---------- */
        .faq-section {
            background: var(--paper-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--divider);
            padding: 48px;
        }
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--divider);
            background: transparent;
        }
        .accordion-custom .accordion-item:first-child {
            border-top: 1px solid var(--divider);
        }
        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--charcoal);
            font-weight: 600;
            font-size: 0.98rem;
            padding: 18px 0;
            box-shadow: none;
            border: none;
            gap: 12px;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--brand-red);
            background: transparent;
            box-shadow: none;
        }
        .accordion-custom .accordion-button::after {
            width: 18px;
            height: 18px;
            background-size: 18px;
            filter: invert(25%) sepia(90%) saturate(2400%) hue-rotate(350deg);
        }
        .accordion-custom .accordion-button:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 3px;
            box-shadow: none;
        }
        .accordion-custom .accordion-body {
            color: var(--text-gray);
            font-size: 0.93rem;
            line-height: 1.85;
            padding: 0 0 20px 0;
        }

        /* ---------- CTA Section ---------- */
        .cta-section {
            background: var(--charcoal);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(215, 25, 32, 0.18);
            pointer-events: none;
        }
        .cta-section .cta-title {
            font-family: var(--font-serif);
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-text {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.98rem;
            line-height: 1.85;
            max-width: 620px;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .btn-amber {
            background: var(--amber);
            border: none;
            color: var(--charcoal);
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 600;
            transition: background var(--transition-fast), transform var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-amber:hover,
        .btn-amber:focus {
            background: var(--amber-light);
            color: var(--charcoal);
            transform: translateY(-1px);
        }
        .btn-ghost-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
        }
        .btn-ghost-light:hover,
        .btn-ghost-light:focus {
            background: #fff;
            border-color: #fff;
            color: var(--charcoal);
        }

        /* ---------- Cover Image Card ---------- */
        .img-rule-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--divider);
            margin: 24px 0;
        }
        .img-rule-card img {
            width: 100%;
            height: auto;
        }
        .img-rule-card .img-caption {
            padding: 14px 18px;
            background: var(--paper-white);
            font-size: 0.85rem;
            color: var(--text-gray);
            border-top: 1px solid var(--divider);
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--charcoal);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 28px;
            margin-top: 80px;
        }
        .site-footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-desc {
            font-size: 0.88rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 0;
        }
        .site-footer .footer-link {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-link:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 40px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
            align-items: center;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ---------- Utility ---------- */
        .divider-light {
            height: 1px;
            background: var(--divider);
            margin: 24px 0;
        }
        .tag-chip {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 16px;
            font-size: 0.78rem;
            font-weight: 500;
            background: rgba(215, 25, 32, 0.08);
            color: var(--brand-red);
            margin-right: 8px;
            margin-bottom: 8px;
            border: 1px solid rgba(215, 25, 32, 0.18);
        }
        .updated-note {
            font-size: 0.82rem;
            color: var(--success);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 20px;
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 991.98px) {
            .rules-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .rules-toc {
                position: static;
                display: flex;
                flex-wrap: wrap;
                gap: 6px;
                padding: 16px 18px;
                align-items: center;
            }
            .rules-toc .toc-title {
                margin-bottom: 0;
                margin-right: 8px;
                font-size: 0.8rem;
            }
            .rules-toc a {
                display: inline-block;
                padding: 6px 12px;
                border-left: none;
                border-radius: var(--radius-sm);
                background: rgba(247, 245, 240, 0.8);
                border: 1px solid var(--divider);
                font-size: 0.82rem;
            }
            .rules-toc a.active-anchor {
                background: rgba(215, 25, 32, 0.08);
                border-color: var(--brand-red);
                color: var(--brand-red);
            }
            .rules-content {
                padding: 32px 24px;
            }
            .page-hero {
                min-height: 300px;
                padding: 32px 24px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .cta-section {
                padding: 36px 28px;
            }
            .faq-section {
                padding: 32px 24px;
            }
        }
        @media (max-width: 575.98px) {
            .page-hero {
                min-height: 260px;
                padding: 24px 18px;
                background-position: center;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero .hero-sub {
                font-size: 0.92rem;
                line-height: 1.7;
            }
            .rules-content {
                padding: 24px 16px;
            }
            .rules-content h2 {
                font-size: 1.2rem;
            }
            .step-list li {
                padding: 16px 14px 16px 60px;
            }
            .step-list li::before {
                left: 12px;
                top: 14px;
                width: 32px;
                height: 32px;
                font-size: 0.82rem;
            }
            .cta-section {
                padding: 28px 18px;
            }
            .cta-section .cta-title {
                font-size: 1.3rem;
            }
            .faq-section {
                padding: 24px 16px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category5 */
:root {
            --brand-red: #D71920;
            --brand-red-dark: #B31218;
            --charcoal: #191B1F;
            --charcoal-light: #2A2D33;
            --paper: #F7F5F0;
            --paper-white: #FFFDFB;
            --amber: #C8A45C;
            --amber-light: #E8D5B0;
            --text-gray: #6A6F78;
            --text-light: #9A9FA8;
            --divider: #ECE9E2;
            --success: #2E7D5B;
            --error: #C62828;
            --radius: 6px;
            --radius-lg: 8px;
            --radius-sm: 4px;
            --shadow-sm: 0 4px 16px rgba(25, 27, 31, 0.06);
            --shadow-md: 0 12px 30px rgba(25, 27, 31, 0.08);
            --shadow-lg: 0 20px 48px rgba(25, 27, 31, 0.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --font-serif: "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", "Consolas", "Courier New", monospace;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--charcoal);
            background-color: var(--paper);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        a:focus,
        button:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 3px;
        }

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background-color: rgba(247, 245, 240, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--divider);
            padding: 0;
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .navbar-brand-custom {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--charcoal);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .navbar-brand-custom .logo-mark {
            display: inline-block;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            line-height: 32px;
            text-align: center;
            letter-spacing: 0;
        }

        .navbar-brand-custom:hover {
            color: var(--charcoal);
        }

        .navbar-nav-custom {
            gap: 8px;
        }

        .navbar-nav-custom .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--charcoal);
            padding: 8px 16px !important;
            position: relative;
            transition: color var(--transition-fast);
        }

        .navbar-nav-custom .nav-link::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--brand-red);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }

        .navbar-nav-custom .nav-link:hover::after,
        .navbar-nav-custom .nav-link.active::after {
            transform: scaleX(1);
        }

        .navbar-nav-custom .nav-link:hover {
            color: var(--brand-red);
        }

        .navbar-nav-custom .nav-link.active {
            color: var(--brand-red);
            font-weight: 600;
        }

        .header-cta {
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            background: var(--charcoal);
            color: #fff;
            font-weight: 500;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }

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

        .navbar-toggler-custom {
            border: 1px solid var(--divider);
            background: transparent;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            color: var(--charcoal);
            font-size: 1.2rem;
            line-height: 1;
        }

        .navbar-toggler-custom:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 2px;
        }

        .mobile-drawer {
            border-top: 1px solid var(--divider);
            padding: 16px 0;
            display: none;
        }

        .mobile-drawer.show {
            display: block;
        }

        .mobile-drawer .nav-link {
            display: block;
            padding: 12px 0;
            font-size: 1rem;
            color: var(--charcoal);
            border-bottom: 1px solid var(--divider);
        }

        .mobile-drawer .nav-link:hover,
        .mobile-drawer .nav-link.active {
            color: var(--brand-red);
        }

        .breadcrumb-wrap {
            background: var(--paper-white);
            border-bottom: 1px solid var(--divider);
            padding: 16px 0;
            margin: 0;
        }

        .breadcrumb {
            margin: 0;
            padding: 0;
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-gray);
            background: transparent;
        }

        .breadcrumb-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .breadcrumb-item + .breadcrumb-item::before {
            content: '/';
            color: var(--text-light);
        }

        .breadcrumb-item a {
            color: var(--text-gray);
        }

        .breadcrumb-item a:hover {
            color: var(--brand-red);
        }

        .breadcrumb-item.active {
            color: var(--charcoal);
            font-weight: 500;
        }

        .page-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 72px 0 88px;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(25, 27, 31, 0.92) 0%, rgba(25, 27, 31, 0.65) 55%, rgba(25, 27, 31, 0.4) 100%);
            z-index: 1;
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }

        .page-hero .hero-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--amber-light);
            background: rgba(215, 25, 32, 0.2);
            border: 1px solid rgba(215, 25, 32, 0.4);
            border-radius: 50px;
            padding: 6px 16px;
            margin-bottom: 20px;
            letter-spacing: 0.08em;
        }

        .page-hero h1 {
            font-family: var(--font-serif);
            font-size: 2.75rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }

        .page-hero .hero-sub {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            max-width: 560px;
            margin-bottom: 28px;
        }

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

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: var(--brand-red);
            color: #fff;
            border: none;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            cursor: pointer;
        }

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

        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

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

        .section-title {
            font-family: var(--font-serif);
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 12px;
            color: var(--charcoal);
        }

        .section-lead {
            font-size: 1rem;
            color: var(--text-gray);
            line-height: 1.8;
            max-width: 720px;
            margin-bottom: 32px;
        }

        .filter-bar {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            padding: 20px 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
        }

        .filter-btn {
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: 50px;
            border: 1px solid var(--divider);
            background: transparent;
            color: var(--text-gray);
            transition: all var(--transition-fast);
            cursor: pointer;
            font-weight: 500;
        }

        .filter-btn:hover {
            border-color: var(--brand-red);
            color: var(--brand-red);
        }

        .filter-btn.active {
            background: var(--brand-red);
            border-color: var(--brand-red);
            color: #fff;
        }

        .story-card {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .story-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
        }

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

        .story-card:hover .story-card-img img {
            transform: scale(1.03);
        }

        .story-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #fff;
            background: rgba(25, 27, 31, 0.75);
            border-radius: 50px;
            padding: 4px 12px;
            letter-spacing: 0.04em;
        }

        .story-card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .story-card-date {
            font-size: 0.8rem;
            color: var(--text-light);
            font-family: var(--font-mono);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .story-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--charcoal);
            line-height: 1.45;
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

        .story-card:hover .story-card-title {
            color: var(--brand-red);
        }

        .story-card-excerpt {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 16px;
        }

        .story-card-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--brand-red);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition-fast);
        }

        .story-card-link i {
            transition: transform var(--transition-fast);
            font-size: 0.75rem;
        }

        .story-card:hover .story-card-link i {
            transform: translateX(4px);
        }

        .story-card.story-card-tall {
            min-height: 480px;
        }

        .story-card.story-card-standard {
            min-height: 380px;
        }

        .aside-widget {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 24px;
        }

        .aside-widget-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--charcoal);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--divider);
        }

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

        .aside-topic-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--divider);
            font-size: 0.9rem;
            color: var(--text-gray);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .aside-topic-list li a {
            color: var(--charcoal);
            transition: color var(--transition-fast);
        }

        .aside-topic-list li a:hover {
            color: var(--brand-red);
        }

        .aside-topic-list .count {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-light);
            font-family: var(--font-mono);
        }

        .pagination-custom {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .page-link-custom {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            border: 1px solid var(--divider);
            background: var(--paper-white);
            color: var(--charcoal);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .page-link-custom:hover {
            border-color: var(--brand-red);
            color: var(--brand-red);
        }

        .page-link-custom.active {
            background: var(--brand-red);
            border-color: var(--brand-red);
            color: #fff;
        }

        .quote-card {
            background: var(--paper-white);
            border-left: 4px solid var(--brand-red);
            border-radius: 0 var(--radius) var(--radius) 0;
            padding: 24px 28px;
            margin: 0;
        }

        .quote-card blockquote {
            margin: 0;
            font-size: 1rem;
            line-height: 1.85;
            color: var(--charcoal);
            font-style: normal;
        }

        .quote-card blockquote strong {
            color: var(--brand-red);
            font-weight: 600;
        }

        .data-highlight-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin: 24px 0;
        }

        .data-highlight-item {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            padding: 20px;
            text-align: center;
            transition: all var(--transition-fast);
        }

        .data-highlight-item:hover {
            border-color: var(--amber);
            box-shadow: var(--shadow-sm);
        }

        .data-highlight-num {
            font-family: var(--font-mono);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--brand-red);
            margin-bottom: 4px;
            letter-spacing: -0.02em;
        }

        .data-highlight-label {
            font-size: 0.8rem;
            color: var(--text-gray);
        }

        .faq-section {
            background: var(--paper-white);
        }

        .faq-item {
            border-bottom: 1px solid var(--divider);
            padding: 0;
            margin-bottom: 0;
        }

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

        .faq-question {
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            padding: 20px 0;
            font-size: 1rem;
            font-weight: 600;
            color: var(--charcoal);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--brand-red);
        }
        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1px solid var(--divider);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--text-gray);
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }
        .faq-question[aria-expanded="true"] .faq-icon {
            background: var(--brand-red);
            border-color: var(--brand-red);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 0 20px;
            font-size: 0.92rem;
            color: var(--text-gray);
            line-height: 1.8;
        }

        .cta-panel {
            background: var(--charcoal);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .cta-panel h3 {
            font-family: var(--font-serif);
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .cta-panel p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            margin: 0;
            max-width: 480px;
        }

        .site-footer {
            background: var(--charcoal);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
            margin-top: 0;
            border-top: 4px solid var(--brand-red);
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .footer-link {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            display: block;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .footer-link:hover {
            color: #fff;
        }

        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            transition: color var(--transition-fast);
        }

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

        @media (max-width: 991px) {
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 767px) {
            .container-custom {
                padding: 0 16px;
            }
            .page-hero {
                padding: 48px 0 64px;
            }
            .page-hero h1 {
                font-size: 1.75rem;
            }
            .page-hero .hero-sub {
                font-size: 0.95rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-panel {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .story-card.story-card-tall,
            .story-card.story-card-standard {
                min-height: auto;
            }
        }

        @media (max-width: 575px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .btn-primary-custom,
            .btn-outline-light-custom {
                width: 100%;
                justify-content: center;
            }
            .hero-actions {
                flex-direction: column;
            }
        }

/* roulang page: category6 */
:root {
            --brand-red: #D71920;
            --brand-red-dark: #B31218;
            --charcoal: #191B1F;
            --charcoal-light: #2A2D33;
            --paper: #F7F5F0;
            --paper-white: #FFFDFB;
            --amber: #C8A45C;
            --amber-light: #E8D5B0;
            --text-gray: #6A6F78;
            --text-light: #9A9FA8;
            --divider: #ECE9E2;
            --success: #2E7D5B;
            --error: #C62828;
            --radius: 6px;
            --radius-lg: 8px;
            --radius-sm: 4px;
            --shadow-sm: 0 4px 16px rgba(25, 27, 31, 0.06);
            --shadow-md: 0 12px 30px rgba(25, 27, 31, 0.08);
            --shadow-lg: 0 20px 48px rgba(25, 27, 31, 0.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --font-serif: "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", "Consolas", "Courier New", monospace;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--charcoal);
            background-color: var(--paper);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--charcoal);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-red);
        }
        a:focus,
        button:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 3px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (min-width: 1200px) {
            .container-custom {
                max-width: 1280px;
            }
        }
        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background-color: rgba(247, 245, 240, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--divider);
            padding: 0;
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .navbar-brand-custom {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--charcoal);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand-custom .logo-mark {
            display: inline-block;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--brand-red);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            line-height: 32px;
            text-align: center;
            letter-spacing: 0;
        }
        .navbar-brand-custom:hover {
            color: var(--charcoal);
        }
        .navbar-nav-custom {
            gap: 8px;
        }
        .navbar-nav-custom .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--charcoal);
            padding: 8px 16px !important;
            position: relative;
            transition: color var(--transition-fast);
        }
        .navbar-nav-custom .nav-link::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--brand-red);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }
        .navbar-nav-custom .nav-link:hover::after,
        .navbar-nav-custom .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-nav-custom .nav-link:hover {
            color: var(--brand-red);
        }
        .navbar-nav-custom .nav-link.active {
            color: var(--brand-red);
            font-weight: 600;
        }
        .header-cta {
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            background: var(--charcoal);
            color: #fff;
            font-weight: 500;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--brand-red);
            color: #fff;
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            border: 1px solid var(--divider);
            background: transparent;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            color: var(--charcoal);
            font-size: 1.2rem;
            line-height: 1;
        }
        .navbar-toggler-custom:focus {
            outline: 2px solid var(--brand-red);
            outline-offset: 2px;
        }
        .mobile-drawer {
            border-top: 1px solid var(--divider);
            padding: 16px 0;
            display: none;
        }
        .mobile-drawer.show {
            display: block;
        }
        .mobile-drawer .nav-link {
            display: block;
            padding: 12px 0;
            font-size: 1rem;
            color: var(--charcoal);
            border-bottom: 1px solid var(--divider);
        }
        .mobile-drawer .nav-link.active {
            color: var(--brand-red);
            font-weight: 600;
        }
        @media (max-width: 991.98px) {
            .navbar-nav-custom {
                display: none;
            }
            .header-cta {
                display: none;
            }
        }
        /* ---------- Hero ---------- */
        .page-hero {
            position: relative;
            padding: 120px 0 80px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 500px;
            display: flex;
            align-items: center;
            isolation: isolate;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(25, 27, 31, 0.85) 0%, rgba(25, 27, 31, 0.45) 55%, rgba(25, 27, 31, 0.15) 100%);
            z-index: -1;
        }
        .page-hero .hero-content {
            max-width: 700px;
        }
        .page-hero .hero-title {
            font-size: 3rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            font-family: var(--font-serif);
        }
        .page-hero .hero-sub {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-badge {
            display: inline-block;
            background: var(--brand-red);
            color: #fff;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
        }
        .hero-btn {
            display: inline-block;
            padding: 12px 30px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 1rem;
            transition: all var(--transition-fast);
            border: none;
        }
        .hero-btn.primary {
            background: var(--brand-red);
            color: #fff;
        }
        .hero-btn.primary:hover {
            background: var(--brand-red-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .hero-btn.secondary {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        .hero-btn.secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        /* ---------- Breadcrumb ---------- */
        .breadcrumb-section {
            background: var(--paper-white);
            border-bottom: 1px solid var(--divider);
            padding: 14px 0;
        }
        .breadcrumb-custom {
            margin: 0;
            padding: 0;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-gray);
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-custom a {
            color: var(--text-gray);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom a:hover {
            color: var(--brand-red);
        }
        .breadcrumb-custom .separator {
            color: var(--text-light);
            font-size: 0.7rem;
        }
        .breadcrumb-custom .current {
            color: var(--charcoal);
            font-weight: 500;
        }
        /* ---------- Section general ---------- */
        .section-block {
            padding: var(--section-pad) 0;
        }
        .section-label {
            font-size: 0.85rem;
            color: var(--brand-red);
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--charcoal);
            line-height: 1.35;
            margin-bottom: 16px;
            font-family: var(--font-serif);
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-gray);
            line-height: 1.85;
            margin-bottom: 32px;
        }
        /* ---------- Filter Area ---------- */
        .filter-bar {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin-bottom: 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .filter-bar label {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-gray);
            margin-right: 8px;
        }
        .filter-bar select,
        .filter-bar input {
            border: 1px solid var(--divider);
            border-radius: var(--radius-sm);
            padding: 8px 14px;
            font-size: 0.9rem;
            color: var(--charcoal);
            background: #fff;
            min-width: 140px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .filter-bar select:focus,
        .filter-bar input:focus {
            border-color: var(--brand-red);
            box-shadow: 0 0 0 3px rgba(215, 25, 32, 0.1);
            outline: none;
        }
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }
        .filter-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid var(--divider);
            background: var(--paper-white);
            color: var(--text-gray);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .filter-tag:hover,
        .filter-tag.active-tag {
            border-color: var(--brand-red);
            color: var(--brand-red);
            background: rgba(215, 25, 32, 0.04);
        }
        /* ---------- Trend Chart ---------- */
        .chart-container {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 32px;
            margin-bottom: 40px;
        }
        .chart-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .chart-header .chart-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--charcoal);
        }
        .chart-header .chart-meta {
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .chart-canvas {
            width: 100%;
            height: 320px;
            background: #FAF9F6;
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }
        .chart-canvas svg {
            width: 100%;
            height: 100%;
            display: block;
        }
        .chart-legend {
            display: flex;
            gap: 20px;
            margin-top: 16px;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--text-gray);
        }
        .chart-legend span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .chart-legend .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            display: inline-block;
        }
        .dot-red {
            background: var(--brand-red);
        }
        .dot-amber {
            background: var(--amber);
        }
        .dot-green {
            background: var(--success);
        }
        /* ---------- Tool Cards ---------- */
        .tool-card {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            padding: 24px;
            height: 100%;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .tool-card:hover {
            border-color: var(--brand-red);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .tool-card .tool-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(215, 25, 32, 0.08);
            color: var(--brand-red);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 14px;
        }
        .tool-card .tool-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--charcoal);
            margin-bottom: 8px;
        }
        .tool-card .tool-desc {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.75;
            flex-grow: 1;
        }
        .tool-card .tool-link {
            font-size: 0.9rem;
            color: var(--brand-red);
            font-weight: 500;
            margin-top: 12px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }
        .tool-card .tool-link:hover {
            gap: 10px;
            color: var(--brand-red-dark);
        }
        /* ---------- Data Table ---------- */
        .data-table-wrap {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 32px;
            overflow: hidden;
        }
        .data-table-wrap .table {
            margin: 0;
            font-size: 0.9rem;
        }
        .data-table-wrap .table thead th {
            background: #FAF9F6;
            border-bottom: 1px solid var(--divider);
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--text-gray);
            padding: 12px 14px;
            white-space: nowrap;
        }
        .data-table-wrap .table tbody td {
            border-bottom: 1px solid var(--divider);
            padding: 12px 14px;
            color: var(--charcoal);
            font-family: var(--font-mono);
            font-size: 0.85rem;
            white-space: nowrap;
        }
        .data-table-wrap .table tbody tr:hover {
            background: rgba(215, 25, 32, 0.03);
        }
        .number-ball {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            font-size: 0.8rem;
            font-weight: 600;
            font-family: var(--font-mono);
            margin: 0 2px;
        }
        .ball-red {
            background: var(--brand-red);
            color: #fff;
        }
        .ball-amber {
            background: var(--amber);
            color: #fff;
        }
        .ball-green {
            background: var(--success);
            color: #fff;
        }
        /* ---------- Sidebar ---------- */
        .sidebar-card {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius);
            padding: 24px;
            margin-bottom: 24px;
        }
        .sidebar-card .sidebar-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--charcoal);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--divider);
        }
        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--divider);
            font-size: 0.9rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-list .label {
            color: var(--text-gray);
        }
        .sidebar-list .value {
            font-weight: 600;
            color: var(--charcoal);
            font-family: var(--font-mono);
        }
        /* ---------- Deep Content ---------- */
        .deep-content {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 48px;
        }
        .deep-content h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--charcoal);
            margin-bottom: 16px;
            font-family: var(--font-serif);
        }
        .deep-content p {
            font-size: 1rem;
            color: var(--text-gray);
            line-height: 1.9;
            margin-bottom: 20px;
        }
        .deep-content .highlight {
            color: var(--charcoal);
            font-weight: 500;
        }
        .deep-content .stat-highlight {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--brand-red);
            font-family: var(--font-mono);
            line-height: 1;
        }
        .feature-divider {
            border: none;
            border-top: 1px solid var(--divider);
            margin: 32px 0;
        }
        /* ---------- FAQ ---------- */
        .faq-section {
            background: var(--paper-white);
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            padding: 48px;
        }
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--divider);
            background: transparent;
        }
        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--charcoal);
            font-weight: 600;
            font-size: 1rem;
            padding: 18px 0;
            box-shadow: none;
            border: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--brand-red);
            background: transparent;
            box-shadow: none;
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\f067';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.9rem;
            color: var(--text-gray);
            transition: transform var(--transition-base);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '\f068';
            color: var(--brand-red);
        }
        .accordion-custom .accordion-body {
            padding: 16px 0 20px;
            color: var(--text-gray);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .accordion-custom .accordion-button:focus {
            outline: none;
            box-shadow: none;
        }
        /* ---------- CTA ---------- */
        .cta-section {
            background: var(--charcoal);
            border-radius: var(--radius-lg);
            padding: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-section .cta-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            font-family: var(--font-serif);
        }
        .cta-section .cta-desc {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }
        .cta-btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            background: var(--brand-red);
            color: #fff;
            font-weight: 500;
            font-size: 1rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .cta-btn:hover {
            background: var(--brand-red-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--charcoal);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            margin-top: 0;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 20px;
        }
        .site-footer .footer-link {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-link:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
            align-items: center;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            transition: color var(--transition-fast);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }
        /* ---------- Responsive ---------- */
        @media (max-width: 991.98px) {
            .page-hero {
                padding: 80px 0 60px;
                min-height: 400px;
            }
            .page-hero .hero-title {
                font-size: 2.2rem;
            }
            .deep-content {
                padding: 32px 24px;
            }
            .faq-section {
                padding: 32px 24px;
            }
            .cta-section {
                padding: 32px 24px;
            }
            .chart-canvas {
                height: 240px;
            }
        }
        @media (max-width: 767.98px) {
            .section-block {
                padding: var(--section-pad-mobile) 0;
            }
            .page-hero {
                padding: 60px 0 48px;
                min-height: 350px;
            }
            .page-hero .hero-title {
                font-size: 1.8rem;
            }
            .page-hero .hero-sub {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .chart-canvas {
                height: 200px;
            }
            .filter-bar {
                padding: 16px;
                gap: 10px;
            }
            .filter-bar select,
            .filter-bar input {
                min-width: 100%;
            }
            .cta-section {
                flex-direction: column;
                align-items: flex-start;
            }
            .deep-content {
                padding: 24px 16px;
            }
            .faq-section {
                padding: 24px 16px;
            }
            .data-table-wrap {
                padding: 16px;
                overflow-x: auto;
            }
        }
        @media (max-width: 520px) {
            .page-hero .hero-title {
                font-size: 1.5rem;
            }
            .hero-btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }