/* roulang page: index */
:root {
            --primary: #1B6CA8;
            --primary-hover: #155A8A;
            --primary-light: #EDF4FA;
            --bg-light: #F7FAFC;
            --bg-white: #FFFFFF;
            --accent-orange: #F39C12;
            --accent-green: #27AE60;
            --text-dark: #1F2A38;
            --text-muted: #5A6A7A;
            --border-color: #E3EAF2;
            --border-input: #CBD9E6;
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-badge: 6px;
            --shadow-card: 0 8px 24px rgba(27, 108, 168, 0.08);
            --shadow-card-hover: 0 12px 32px rgba(27, 108, 168, 0.14);
            --shadow-nav: 0 2px 12px rgba(27, 108, 168, 0.06);
            --font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --section-padding: 80px 0;
            --section-padding-mobile: 48px 0;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-dark);
            background-color: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

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

        .container {
            max-width: var(--container-max);
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 1200px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-nav);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow 0.3s ease;
        }

        .site-header .navbar {
            padding: 12px 0;
        }

        .navbar-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color 0.2s ease;
        }

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

        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .navbar-nav .nav-link {
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 8px;
            position: relative;
            transition: color 0.2s ease, background-color 0.2s ease;
        }

        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .mega-trigger {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 8px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
            background: transparent;
        }

        .mega-trigger:hover,
        .mega-trigger[aria-expanded="true"] {
            color: var(--primary);
            background-color: var(--primary-light);
            border-color: var(--border-color);
        }

        .mega-panel {
            position: absolute;
            top: 100%;
            right: 0;
            left: auto;
            width: 560px;
            max-width: 90vw;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--border-color);
            padding: 24px;
            z-index: 1060;
            display: none;
            opacity: 0;
            transform: translateY(10px);
            transition: opacity 0.25s ease, transform 0.25s ease;
        }

        .mega-panel.show {
            display: block;
            opacity: 1;
            transform: translateY(0);
        }

        .mega-panel .mega-heading {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .mega-panel .mega-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 10px;
            border-radius: 8px;
            color: var(--text-dark);
            font-size: 0.9rem;
            transition: all 0.2s ease;
        }

        .mega-panel .mega-link:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mega-panel .mega-link .mega-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .mega-panel .mega-update {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-left: auto;
            white-space: nowrap;
        }

        .mega-panel .mega-focus-card {
            background: var(--primary-light);
            border-radius: 10px;
            padding: 14px 16px;
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mega-panel .mega-focus-card .focus-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .navbar-toggler {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 6px 10px;
        }

        .navbar-toggler:focus { outline: none; box-shadow: none; }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231B6CA8' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .navbar-collapse {
            transition: max-height 0.3s ease;
        }

        @media (max-width: 991.98px) {
            .mega-panel {
                position: static;
                width: 100%;
                max-width: 100%;
                box-shadow: none;
                border: none;
                border-radius: 0;
                padding: 12px 0;
                display: none;
                opacity: 1;
                transform: none;
                transition: max-height 0.3s ease;
            }
            .mega-panel.show {
                display: block;
            }
            .mega-trigger {
                width: 100%;
                text-align: left;
                justify-content: space-between;
            }
        }

        /* ========== Sections ========== */
        .section {
            padding: var(--section-padding);
        }

        .section-alt {
            background-color: #fff;
        }

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

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 32px;
            max-width: 680px;
            line-height: 1.75;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 8px;
        }

        /* ========== Hero ========== */
        .hero {
            background: linear-gradient(135deg, #F7FAFC 0%, #EAF3FA 100%);
            padding: 72px 0 64px;
            position: relative;
            overflow: hidden;
        }

        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 12px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            margin-bottom: 16px;
        }

        .hero h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: #1F2A38;
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .hero .hero-sub {
            font-size: 1.1rem;
            color: #5A6A7A;
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

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

        .hero .hero-image-wrap {
            background: #fff;
            border-radius: 16px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            padding: 8px;
            position: relative;
        }

        .hero .hero-image-wrap img {
            border-radius: 12px;
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        .hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 16px;
        }

        .hero-stat-item {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .hero-stat-item strong {
            display: block;
            font-size: 1.4rem;
            color: var(--primary);
            font-weight: 700;
        }

        /* ========== Buttons ========== */
        .btn-primary-custom {
            background-color: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: background-color 0.25s ease, transform 0.2s ease, box-shadow 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background-color: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(27, 108, 168, 0.25);
        }

        .btn-outline-custom {
            background-color: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: background-color 0.25s ease, color 0.2s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            background-color: var(--primary-light);
            color: var(--primary-hover);
            transform: translateY(-2px);
        }

        .btn-sm-custom {
            padding: 6px 14px;
            font-size: 0.85rem;
        }

        /* ========== Cards ========== */
        .card-custom {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            height: 100%;
            transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
            position: relative;
            overflow: hidden;
        }

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

        .card-custom .card-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
        }

        .card-custom .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: #1F2A38;
            margin-bottom: 8px;
        }

        .card-custom .card-text {
            font-size: 0.9rem;
            color: #5A6A7A;
            line-height: 1.7;
        }

        .card-image-top {
            border-radius: 12px 12px 0 0;
            width: 100%;
            height: 180px;
            object-fit: cover;
            margin-bottom: 16px;
        }

        .card-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent-orange);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 3px 8px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.3px;
            z-index: 2;
        }

        .card-badge-green {
            background: var(--accent-green);
        }

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

        .list-card {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 16px;
            margin-bottom: 16px;
            transition: all 0.3s ease;
            border: 1px solid var(--border-color);
        }

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

        .list-card img {
            width: 100px;
            height: 80px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }

        .list-card .list-body {
            flex: 1;
        }

        .list-card .list-title {
            font-size: 1rem;
            font-weight: 600;
            color: #1F2A38;
            margin-bottom: 4px;
        }

        .list-card .list-meta {
            font-size: 0.75rem;
            color: #5A6A7A;
            margin-bottom: 4px;
        }

        .list-card .list-desc {
            font-size: 0.85rem;
            color: #5A6A7A;
            line-height: 1.6;
        }

        .rank-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0 8px;
        }

        .rank-table th {
            font-size: 0.8rem;
            font-weight: 600;
            color: #5A6A7A;
            text-align: left;
            padding: 0 12px 8px;
            border-bottom: 2px solid var(--border-color);
        }

        .rank-table td {
            background: #fff;
            padding: 12px;
            font-size: 0.9rem;
            color: #1F2A38;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.03);
        }

        .rank-table td:first-child {
            font-weight: 700;
            color: var(--primary);
            width: 40px;
            text-align: center;
        }

        .rank-up {
            color: var(--accent-green);
            font-size: 0.8rem;
        }

        /* ========== Process Steps ========== */
        .step-item {
            text-align: left;
            position: relative;
            padding-left: 56px;
            margin-bottom: 32px;
        }

        .step-item .step-number {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            position: absolute;
            left: 0;
            top: 0;
        }

        .step-item h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #1F2A38;
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 0.9rem;
            color: #5A6A7A;
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            margin-bottom: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: box-shadow 0.3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .faq-question {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 1rem;
            color: #1F2A38;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fff;
            transition: background-color 0.2s ease;
            user-select: none;
        }

        .faq-question:hover {
            background-color: #F7FAFC;
        }

        .faq-question .faq-icon {
            transition: transform 0.3s ease;
            color: var(--primary);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            background: #F7FAFC;
            border-left: 4px solid var(--primary);
        }

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

        .faq-answer-inner {
            padding: 16px 20px;
            font-size: 0.9rem;
            color: #5A6A7A;
            line-height: 1.7;
        }

        /* ========== CTA / Form ========== */
        .cta-section {
            background: linear-gradient(135deg, #EDF4FA 0%, #F7FAFC 100%);
            border-radius: 16px;
            padding: 48px 32px;
            position: relative;
            overflow: hidden;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1F2A38;
            margin-bottom: 12px;
        }

        .form-control-custom {
            border: 1px solid var(--border-input);
            border-radius: 8px;
            padding: 12px 16px;
            font-size: 0.9rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .form-control-custom:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27, 108, 168, 0.1);
            outline: none;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #194E70;
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 24px;
            margin-top: 48px;
        }

        .site-footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
        }

        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 360px;
            line-height: 1.7;
        }

        .site-footer h6 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }

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

        .site-footer .footer-link {
            display: block;
            padding: 4px 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            margin-top: 32px;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== Responsive ========== */
        @media (max-width: 767.98px) {
            .section {
                padding: var(--section-padding-mobile);
            }
            .hero {
                padding: 40px 0 32px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero .hero-sub {
                font-size: 1rem;
            }
            .hero .hero-image-wrap img {
                height: 200px;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .cta-section {
                padding: 32px 16px;
            }
            .site-footer {
                padding: 40px 0 16px;
            }
        }

        @media (max-width: 575.98px) {
            .hero .hero-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .hero .hero-buttons .btn {
                width: 100%;
                justify-content: center;
            }
            .step-item {
                padding-left: 48px;
            }
            .step-item .step-number {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
            .rank-table {
                font-size: 0.8rem;
            }
            .rank-table th,
            .rank-table td {
                padding: 8px 6px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1B6CA8;
            --primary-hover: #155A8A;
            --primary-light: #EDF4FA;
            --bg-light: #F7FAFC;
            --bg-white: #FFFFFF;
            --accent-orange: #F39C12;
            --accent-green: #27AE60;
            --text-dark: #1F2A38;
            --text-muted: #5A6A7A;
            --border-color: #E3EAF2;
            --border-input: #CBD9E6;
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-badge: 6px;
            --shadow-card: 0 8px 24px rgba(27, 108, 168, 0.08);
            --shadow-card-hover: 0 12px 32px rgba(27, 108, 168, 0.14);
            --shadow-nav: 0 2px 12px rgba(27, 108, 168, 0.06);
            --font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --section-padding: 80px 0;
            --section-padding-mobile: 48px 0;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-dark);
            background-color: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        /* ========== Header / Navigation ========== */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-nav);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow 0.3s ease;
        }
        .site-header .navbar {
            padding: 12px 0;
        }
        .navbar-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color 0.2s ease;
        }
        .navbar-brand:hover {
            color: var(--primary-hover);
        }
        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 8px;
            position: relative;
            transition: color 0.2s ease, background-color 0.2s ease;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .mega-trigger {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 8px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
            background: transparent;
        }
        .mega-trigger:hover,
        .mega-trigger[aria-expanded="true"] {
            color: var(--primary);
            background-color: var(--primary-light);
            border-color: var(--border-color);
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            right: 0;
            left: auto;
            width: 560px;
            max-width: 90vw;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--border-color);
            padding: 24px;
            z-index: 1060;
            display: none;
            opacity: 0;
            transform: translateY(10px);
            transition: opacity 0.25s ease, transform 0.25s ease;
        }
        .mega-panel.show {
            display: block;
            opacity: 1;
            transform: translateY(0);
        }
        .mega-panel .mega-heading {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .mega-panel .mega-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 10px;
            border-radius: 8px;
            color: var(--text-dark);
            font-size: 0.9rem;
            transition: all 0.2s ease;
            margin-bottom: 4px;
        }
        .mega-panel .mega-link:hover {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mega-panel .mega-link .mega-icon {
            width: 32px;
            height: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 6px;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .mega-panel .mega-link .mega-update {
            font-size: 0.8rem;
            color: var(--accent-orange);
            margin-left: auto;
            white-space: nowrap;
        }
        .mega-highlight-card {
            background: linear-gradient(135deg, #F7FAFC 0%, #EAF3FA 100%);
            border-radius: var(--radius-card);
            padding: 16px;
            text-align: center;
        }
        .mega-highlight-card .mega-highlight-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 8px;
            font-size: 1rem;
        }
        .mega-highlight-card h6 {
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-dark);
        }
        .mega-highlight-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        /* ========== Page Header / Breadcrumb ========== */
        .page-header {
            background: linear-gradient(135deg, #F7FAFC 0%, #EAF3FA 100%);
            padding: 40px 0 32px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 0;
        }
        .breadcrumb {
            background: transparent;
            margin-bottom: 8px;
            padding: 0;
            font-size: 0.85rem;
        }
        .breadcrumb-item a {
            color: var(--text-muted);
        }
        .breadcrumb-item a:hover {
            color: var(--primary);
        }
        .breadcrumb-item.active {
            color: var(--text-dark);
            font-weight: 500;
        }
        .page-header h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .page-header .lead {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.8;
        }
        /* ========== Guide Filter Bar ========== */
        .filter-bar {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            margin-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            box-shadow: var(--shadow-card);
        }
        .filter-bar .filter-label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-dark);
            white-space: nowrap;
        }
        .filter-bar .btn-filter {
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            background: transparent;
            color: var(--text-muted);
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .filter-bar .btn-filter:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .filter-bar .btn-filter.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        /* ========== Guide Cards ========== */
        .guide-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }
        .guide-card .guide-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #EAF3FA;
        }
        .guide-card .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .guide-card .guide-card-img .badge-difficulty {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.3px;
        }
        .guide-card .guide-card-img .badge-updated {
            position: absolute;
            top: 10px;
            right: 10px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--accent-orange);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.3px;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .guide-card .guide-card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .guide-category {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-orange);
            text-transform: uppercase;
            letter-spacing: 0.4px;
            margin-bottom: 6px;
        }
        .guide-card .guide-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.45;
        }
        .guide-card .guide-excerpt {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }
        .guide-card .guide-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .guide-card .guide-meta .hot-score {
            color: var(--accent-orange);
            font-weight: 600;
        }
        /* ========== Featured Guides ========== */
        .featured-guide-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
            height: 100%;
        }
        .featured-guide-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }
        .featured-guide-card .featured-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #EAF3FA;
        }
        .featured-guide-card .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-guide-card .featured-img .featured-flag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent-orange);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.3px;
        }
        .featured-guide-card .featured-body {
            padding: 18px 20px 20px;
        }
        .featured-guide-card .featured-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .featured-guide-card .featured-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 10px;
        }
        .featured-guide-card .featured-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .featured-guide-card .featured-tags .tag {
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.72rem;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 20px;
        }
        /* ========== Ranking Bar ========== */
        .ranking-list-bar {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 20px;
        }
        .ranking-list-bar .rank-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 10px 8px;
            border-radius: 8px;
            transition: background-color 0.2s ease;
            margin-bottom: 4px;
        }
        .ranking-list-bar .rank-item:hover {
            background-color: var(--primary-light);
        }
        .ranking-list-bar .rank-number {
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 6px;
            font-weight: 700;
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .ranking-list-bar .rank-number.top1 {
            background: var(--accent-orange);
        }
        .ranking-list-bar .rank-number.top2 {
            background: #C0C4CC;
        }
        .ranking-list-bar .rank-number.top3 {
            background: #C89B6D;
        }
        .ranking-list-bar .rank-content {
            flex: 1;
        }
        .ranking-list-bar .rank-title {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        .ranking-list-bar .rank-sub {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .ranking-list-bar .rank-value {
            font-weight: 700;
            font-size: 1rem;
            color: var(--accent-orange);
            white-space: nowrap;
        }
        /* ========== Tutorial Steps ========== */
        .tutorial-steps {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .tutorial-step {
            flex: 1;
            min-width: 200px;
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 24px 20px;
            position: relative;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }
        .tutorial-step:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .tutorial-step .step-number {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 14px;
        }
        .tutorial-step .step-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .tutorial-step .step-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.65;
        }
        /* ========== FAQ Section ========== */
        .faq-section {
            background: var(--bg-light);
        }
        .accordion-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(27, 108, 168, 0.04);
        }
        .accordion-button {
            background: var(--bg-white);
            color: var(--text-dark);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 16px 20px;
            border-radius: var(--radius-card) !important;
            transition: all 0.2s ease;
        }
        .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            border-left: 4px solid var(--primary);
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }
        .accordion-button::after {
            color: var(--primary);
        }
        .accordion-body {
            padding: 18px 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
        }
        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(135deg, #F7FAFC 0%, #EAF3FA 100%);
            padding: 60px 0;
        }
        .cta-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 40px 32px;
            text-align: center;
        }
        .cta-card h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .cta-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.3px;
        }
        .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(27, 108, 168, 0.2);
        }
        .btn-secondary-custom {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
        }
        /* ========== Footer ========== */
        .site-footer {
            background: #194E70;
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 28px;
            font-size: 0.88rem;
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            font-size: 0.88rem;
            max-width: 320px;
        }
        .site-footer h6 {
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 8px;
            font-size: 0.85rem;
            transition: color 0.2s ease;
        }
        .site-footer .footer-link:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            margin-top: 32px;
            padding-top: 20px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.82rem;
        }
        /* ========== Responsive ========== */
        @media (max-width: 991px) {
            .page-header h1 {
                font-size: 28px;
            }
            .mega-panel {
                width: 100%;
                max-width: 100%;
                position: static;
                box-shadow: none;
                border-radius: 0;
                border: none;
                padding: 0 16px 16px;
            }
            .mega-trigger {
                display: none;
            }
            .navbar-nav {
                padding-top: 8px;
            }
            .navbar-nav .nav-link {
                padding: 10px 12px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-padding: var(--section-padding-mobile);
            }
            .page-header {
                padding: 28px 0 24px;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .filter-bar {
                padding: 12px 14px;
                gap: 8px;
            }
            .filter-bar .btn-filter {
                font-size: 0.78rem;
                padding: 5px 10px;
            }
            .guide-card .guide-card-body {
                padding: 16px 16px 20px;
            }
            .featured-guide-card .featured-body {
                padding: 14px 16px 16px;
            }
            .tutorial-step {
                min-width: 100%;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .navbar-brand {
                font-size: 1.2rem;
            }
            .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .guide-card .guide-title {
                font-size: 0.95rem;
            }
            .featured-guide-card .featured-title {
                font-size: 0.95rem;
            }
            .cta-card h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1B6CA8;
            --primary-hover: #155A8A;
            --primary-light: #EDF4FA;
            --bg-light: #F7FAFC;
            --bg-white: #FFFFFF;
            --accent-orange: #F39C12;
            --accent-green: #27AE60;
            --text-dark: #1F2A38;
            --text-muted: #5A6A7A;
            --border-color: #E3EAF2;
            --border-input: #CBD9E6;
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-badge: 6px;
            --shadow-card: 0 8px 24px rgba(27, 108, 168, 0.08);
            --shadow-card-hover: 0 12px 32px rgba(27, 108, 168, 0.14);
            --shadow-nav: 0 2px 12px rgba(27, 108, 168, 0.06);
            --font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --section-padding: 80px 0;
            --section-padding-mobile: 48px 0;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-dark);
            background-color: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-dark);
            font-weight: 700;
        }
        h1 {
            font-size: 2.2rem;
            line-height: 1.25;
            margin-bottom: 0.5rem;
        }
        h2 {
            font-size: 1.75rem;
            line-height: 1.3;
        }
        h3 {
            font-size: 1.25rem;
            line-height: 1.4;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.75rem;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
        }
        .page-section {
            padding: var(--section-padding);
        }
        .page-section-alt {
            background-color: var(--bg-white);
        }
        .text-accent {
            color: var(--primary);
        }
        .text-muted-2 {
            color: var(--text-muted);
        }
        .badge-soft {
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            display: inline-block;
        }
        .badge-orange {
            background: #fff4e5;
            color: #c0760a;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            display: inline-block;
        }
        .badge-green {
            background: #eafaf1;
            color: #1c7c45;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            display: inline-block;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-nav);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow 0.3s ease;
        }
        .site-header .navbar {
            padding: 12px 0;
        }
        .navbar-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color 0.2s ease;
        }
        .navbar-brand:hover {
            color: var(--primary-hover);
        }
        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 8px;
            position: relative;
            transition: color 0.2s ease, background-color 0.2s ease;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .mega-trigger {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 8px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
            background: transparent;
        }
        .mega-trigger:hover,
        .mega-trigger[aria-expanded="true"] {
            color: var(--primary);
            background-color: var(--primary-light);
            border-color: var(--border-color);
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            right: 0;
            left: auto;
            width: 560px;
            max-width: 90vw;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--border-color);
            padding: 24px;
            z-index: 1060;
            display: none;
            opacity: 0;
            transform: translateY(10px);
            transition: opacity 0.25s ease, transform 0.25s ease;
        }
        .mega-panel.show {
            display: block;
            opacity: 1;
            transform: translateY(0);
        }
        .mega-panel .mega-heading {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .mega-panel .mega-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 10px;
            border-radius: 8px;
            color: var(--text-dark);
            font-size: 0.9rem;
            transition: all 0.2s ease;
        }
        .mega-panel .mega-link:hover {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mega-panel .mega-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 8px;
            font-size: 0.9rem;
        }
        .mega-update {
            font-size: 0.7rem;
            color: var(--accent-orange);
            margin-left: auto;
            font-weight: 600;
        }
        .mega-card {
            background: var(--primary-light);
            border-radius: 10px;
            padding: 14px;
            margin-top: 16px;
        }
        .mega-card .mega-card-title {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
        }
        .navbar-toggler {
            border: none;
            padding: 8px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* ========== 分类页头部 ========== */
        .page-header {
            background: linear-gradient(135deg, #F7FAFC 0%, #EAF3FA 100%);
            padding: 48px 0 32px;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb {
            --bs-breadcrumb-divider: '›';
            margin-bottom: 12px;
            font-size: 0.85rem;
        }
        .breadcrumb-item a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .breadcrumb-item a:hover {
            color: var(--primary);
        }
        .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 500;
        }
        .page-header .lead {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 800px;
        }

        /* ========== 筛选标签区 ========== */
        .filter-bar {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 20px 16px;
            margin-top: -24px;
            position: relative;
            z-index: 5;
        }
        .filter-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .filter-btn {
            border: 1px solid var(--border-color);
            background: var(--bg-white);
            color: var(--text-dark);
            border-radius: 20px;
            padding: 6px 16px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .filter-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ========== 攻略卡片列表 ========== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .guide-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-color);
        }
        .guide-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(27, 108, 168, 0.3);
        }
        .guide-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #eaf3fa;
        }
        .guide-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .guide-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .guide-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255,255,255,0.95);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .guide-card .card-difficulty {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: rgba(0,0,0,0.55);
            color: #fff;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
        }
        .guide-card .card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .guide-card .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 4px;
            min-height: 2.8em;
        }
        .guide-card .card-text {
            color: var(--text-muted);
            font-size: 0.9rem;
            flex: 1;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.75rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }
        .guide-card .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        /* ========== 本周精选攻略 ========== */
        .featured-section {
            background: var(--bg-white);
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .featured-card {
            background: var(--bg-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            transition: all 0.25s ease;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .featured-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .featured-card .featured-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .featured-card .featured-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        .featured-card .featured-text {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .featured-tag {
            display: inline-block;
            background: var(--accent-orange);
            color: #fff;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.75rem;
            font-weight: 600;
            width: fit-content;
        }

        /* ========== 热度榜单 ========== */
        .hot-list-section {
            background: var(--bg-light);
        }
        .hot-list {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 8px 0;
            margin-top: 32px;
        }
        .hot-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-color);
            transition: background 0.2s ease;
        }
        .hot-list-item:last-child {
            border-bottom: none;
        }
        .hot-list-item:hover {
            background: var(--primary-light);
        }
        .hot-rank {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            width: 40px;
            text-align: center;
        }
        .hot-rank.top1 {
            color: var(--accent-orange);
        }
        .hot-rank.top2 {
            color: #6c7a8a;
        }
        .hot-rank.top3 {
            color: #b87333;
        }
        .hot-info {
            flex: 1;
        }
        .hot-info .hot-title {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 0.95rem;
        }
        .hot-info .hot-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .hot-score {
            text-align: right;
            min-width: 70px;
        }
        .hot-score .score-num {
            font-weight: 700;
            color: var(--primary);
            font-size: 1.1rem;
        }
        .hot-score .score-label {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* ========== 图文教程步骤 ========== */
        .steps-section {
            background: var(--bg-white);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .step-card {
            background: var(--bg-light);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: all 0.25s ease;
        }
        .step-card:hover {
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.3rem;
            border-radius: 50%;
            margin-bottom: 16px;
        }
        .step-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .step-text {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-light);
        }
        .accordion-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .accordion-button {
            background: var(--bg-white);
            font-weight: 600;
            color: var(--text-dark);
            font-size: 0.95rem;
            padding: 18px 20px;
            border-radius: var(--radius-card) !important;
            transition: all 0.2s ease;
        }
        .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }
        .accordion-button::after {
            background-size: 1.1rem;
        }
        .accordion-body {
            padding: 16px 20px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            background: #fff;
        }

        /* ========== CTA / 提交攻略 ========== */
        .cta-section {
            background: linear-gradient(135deg, #EAF3FA 0%, #F7FAFC 100%);
            padding: 64px 0;
        }
        .cta-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 40px 32px;
        }
        .cta-card h2 {
            font-size: 1.75rem;
            margin-bottom: 8px;
        }
        .form-control {
            border: 1px solid var(--border-input);
            border-radius: 8px;
            padding: 10px 14px;
            font-size: 0.9rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27,108,168,0.1);
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.25s ease;
        }
        .btn-primary-custom:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(27,108,168,0.2);
            color: #fff;
        }
        .btn-outline-custom {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            border-radius: var(--radius-btn);
            padding: 9px 22px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.25s ease;
        }
        .btn-outline-custom:hover {
            background: var(--primary-light);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #194E70;
            color: rgba(255,255,255,0.85);
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
        }
        .site-footer .footer-desc {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            line-height: 1.7;
        }
        .site-footer h6 {
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .site-footer .footer-link {
            display: block;
            color: rgba(255,255,255,0.7);
            margin-bottom: 8px;
            transition: color 0.2s ease;
            font-size: 0.85rem;
        }
        .site-footer .footer-link:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: 16px;
            margin-top: 32px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.6);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .mega-panel {
                width: 100%;
                max-width: 100%;
                left: 0;
                right: 0;
                position: static;
                box-shadow: none;
                border-radius: 0;
                border: none;
                border-bottom: 1px solid var(--border-color);
                margin-top: 12px;
            }
            .mega-panel.show {
                display: block;
            }
        }
        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-section {
                padding: var(--section-padding-mobile);
            }
            h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .filter-bar {
                padding: 16px;
                margin-top: -16px;
            }
            .filter-btn {
                font-size: 0.8rem;
                padding: 5px 12px;
            }
            .cta-card {
                padding: 24px 18px;
            }
        }
        @media (max-width: 575.98px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .navbar-brand {
                font-size: 1.2rem;
            }
            .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category4 */
:root {
        --primary: #1B6CA8;
        --primary-hover: #155A8A;
        --primary-light: #EDF4FA;
        --bg-light: #F7FAFC;
        --bg-white: #FFFFFF;
        --accent-orange: #F39C12;
        --accent-green: #27AE60;
        --text-dark: #1F2A38;
        --text-muted: #5A6A7A;
        --border-color: #E3EAF2;
        --border-input: #CBD9E6;
        --radius-card: 14px;
        --radius-btn: 10px;
        --radius-badge: 6px;
        --shadow-card: 0 8px 24px rgba(27, 108, 168, 0.08);
        --shadow-card-hover: 0 12px 32px rgba(27, 108, 168, 0.14);
        --shadow-nav: 0 2px 12px rgba(27, 108, 168, 0.06);
        --font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        --section-padding: 80px 0;
        --section-padding-mobile: 48px 0;
        --container-max: 1200px;
    }
    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }
    body {
        font-family: var(--font-family);
        font-size: 15px;
        line-height: 1.75;
        color: var(--text-dark);
        background-color: var(--bg-light);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    a:hover {
        color: var(--primary-hover);
    }
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
        outline: 2px solid var(--accent-orange);
        outline-offset: 2px;
        border-radius: 4px;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    .container {
        max-width: var(--container-max);
        padding-left: 24px;
        padding-right: 24px;
    }
    .container {
        padding-left: 24px;
        padding-right: 24px;
    }
    h1, h2, h3, h4, h5, h6 {
        color: var(--text-dark);
        font-weight: 700;
        margin-bottom: 0;
    }
    /* ========== Header / Navigation ========== */
    .site-header {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-nav);
        position: sticky;
        top: 0;
        z-index: 1050;
        transition: box-shadow 0.3s ease;
    }
    .site-header .navbar {
        padding: 10px 0;
    }
    .navbar-brand {
        font-size: 1.4rem;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: 0.5px;
        display: flex;
        align-items: center;
        gap: 8px;
        transition: color 0.2s ease;
    }
    .navbar-brand:hover {
        color: var(--primary-hover);
    }
    .navbar-brand .brand-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--primary);
        color: #fff;
        border-radius: 8px;
        font-size: 1.1rem;
        font-weight: 700;
        flex-shrink: 0;
    }
    .navbar-nav .nav-link {
        color: var(--text-dark);
        font-weight: 500;
        font-size: 0.95rem;
        padding: 8px 14px;
        border-radius: 8px;
        position: relative;
        transition: color 0.2s ease, background-color 0.2s ease;
    }
    .navbar-nav .nav-link:hover {
        color: var(--primary);
        background-color: var(--primary-light);
    }
    .navbar-nav .nav-link.active {
        color: var(--primary);
        background-color: var(--primary-light);
    }
    .navbar-nav .nav-link.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 14px;
        right: 14px;
        height: 2px;
        background: var(--primary);
        border-radius: 2px;
    }
    .mega-trigger {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--text-dark);
        font-weight: 500;
        font-size: 0.95rem;
        padding: 8px 14px;
        border-radius: 8px;
        border: 1px solid transparent;
        cursor: pointer;
        transition: all 0.2s ease;
        background: transparent;
    }
    .mega-trigger:hover,
    .mega-trigger[aria-expanded="true"] {
        color: var(--primary);
        background-color: var(--primary-light);
        border-color: var(--border-color);
    }
    .mega-panel {
        position: absolute;
        top: 100%;
        right: 0;
        left: auto;
        width: 560px;
        max-width: 90vw;
        background: #fff;
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card-hover);
        border: 1px solid var(--border-color);
        padding: 24px;
        z-index: 1060;
        display: none;
        opacity: 0;
        transform: translateY(10px);
        transition: opacity 0.25s ease, transform 0.25s ease;
    }
    .mega-panel.show {
        display: block;
        opacity: 1;
        transform: translateY(0);
    }
    .mega-panel .mega-heading {
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-bottom: 12px;
    }
    .mega-panel .mega-link {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 8px 10px;
        border-radius: 8px;
        color: var(--text-dark);
        font-size: 0.9rem;
        transition: all 0.2s ease;
        text-decoration: none;
    }
    .mega-panel .mega-link:hover {
        background-color: var(--primary-light);
        color: var(--primary);
    }
    .mega-panel .mega-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 30px;
        height: 30px;
        background: var(--primary-light);
        color: var(--primary);
        border-radius: 6px;
        font-size: 0.9rem;
        flex-shrink: 0;
    }
    .mega-panel .mega-update {
        margin-left: auto;
        font-size: 0.75rem;
        color: var(--accent-orange);
        font-weight: 500;
        flex-shrink: 0;
    }
    .mega-panel .mega-article {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 6px 8px;
        border-radius: 6px;
        color: var(--text-muted);
        font-size: 0.85rem;
        transition: all 0.2s ease;
        text-decoration: none;
    }
    .mega-panel .mega-article:hover {
        color: var(--primary);
        background-color: var(--primary-light);
    }
    .mega-panel .mega-article .fa-circle {
        font-size: 0.35rem;
        color: var(--accent-orange);
    }
    .mega-panel .mega-cta-card {
        background: var(--primary-light);
        border-radius: 10px;
        padding: 16px;
        text-align: center;
    }
    .mega-panel .mega-cta-card .mega-cta-icon {
        font-size: 1.8rem;
        color: var(--primary);
        margin-bottom: 8px;
    }
    .mega-panel .mega-cta-card .mega-cta-title {
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 4px;
    }
    .mega-panel .mega-cta-card .mega-cta-desc {
        font-size: 0.8rem;
        color: var(--text-muted);
        margin-bottom: 10px;
    }
    .mega-panel .mega-cta-card .btn {
        font-size: 0.8rem;
        padding: 5px 14px;
    }
    .navbar-toggler {
        border: none;
        padding: 8px 10px;
        border-radius: 8px;
        background: var(--primary-light);
    }
    .navbar-toggler:focus {
        box-shadow: none;
        outline: 2px solid var(--accent-orange);
        outline-offset: 2px;
    }
    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231B6CA8' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
    /* ========== Buttons ========== */
    .btn-primary {
        background-color: var(--primary);
        border: 1.5px solid var(--primary);
        color: #fff;
        border-radius: var(--radius-btn);
        padding: 10px 22px;
        font-size: 0.9rem;
        font-weight: 500;
        transition: all 0.25s ease;
        text-decoration: none;
    }
    .btn-primary:hover {
        background-color: var(--primary-hover);
        border-color: var(--primary-hover);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 6px 16px rgba(27, 108, 168, 0.2);
    }
    .btn-primary:focus-visible {
        outline: 2px solid var(--accent-orange);
        outline-offset: 2px;
        box-shadow: none;
    }
    .btn-outline-primary {
        background: var(--bg-white);
        border: 1.5px solid var(--primary);
        color: var(--primary);
        border-radius: var(--radius-btn);
        padding: 10px 22px;
        font-size: 0.9rem;
        font-weight: 500;
        transition: all 0.25s ease;
        text-decoration: none;
    }
    .btn-outline-primary:hover {
        background: var(--primary-light);
        border-color: var(--primary);
        color: var(--primary);
        transform: translateY(-2px);
        box-shadow: 0 6px 16px rgba(27, 108, 168, 0.1);
    }
    .btn-light-outline {
        background: transparent;
        border: 1.5px solid rgba(255, 255, 255, 0.5);
        color: #fff;
        border-radius: var(--radius-btn);
        padding: 10px 22px;
        font-size: 0.9rem;
        font-weight: 500;
        transition: all 0.25s ease;
        text-decoration: none;
    }
    .btn-light-outline:hover {
        background: rgba(255, 255, 255, 0.1);
        border-color: #fff;
        color: #fff;
        transform: translateY(-2px);
    }
    /* ========== Sections ========== */
    .section {
        padding: var(--section-padding);
    }
    .section-sm {
        padding: 48px 0;
    }
    .section-alt {
        background: var(--bg-white);
    }
    .section-title {
        font-size: 1.6rem;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 12px;
    }
    .section-lead {
        font-size: 1rem;
        color: var(--text-muted);
        max-width: 680px;
        line-height: 1.75;
    }
    /* ========== Breadcrumb ========== */
    .breadcrumb-custom {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: var(--text-muted);
        margin-bottom: 16px;
        flex-wrap: wrap;
    }
    .breadcrumb-custom a {
        color: var(--text-muted);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    .breadcrumb-custom a:hover {
        color: var(--primary);
    }
    .breadcrumb-custom .separator {
        color: var(--border-color);
    }
    .breadcrumb-custom .current {
        color: var(--primary);
        font-weight: 500;
    }
    /* ========== Topic Header Section ========== */
    .topic-header-section {
        padding: 56px 0 36px;
        background: linear-gradient(135deg, #F7FAFC 0%, #EAF3FA 100%);
        border-bottom: 1px solid var(--border-color);
    }
    .topic-header-section h1 {
        font-size: 2rem;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 8px;
    }
    .topic-header-section .subtitle {
        font-size: 1.05rem;
        color: var(--text-muted);
        max-width: 720px;
        line-height: 1.7;
    }
    .topic-header-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 16px;
    }
    .topic-header-tags .tag {
        display: inline-flex;
        align-items: center;
        gap: 5px;
        background: #fff;
        border: 1px solid var(--border-color);
        color: var(--text-muted);
        font-size: 0.8rem;
        padding: 5px 12px;
        border-radius: 20px;
        font-weight: 500;
        transition: all 0.2s ease;
    }
    .topic-header-tags .tag:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: var(--primary-light);
    }
    /* ========== Featured Topics Cards ========== */
    .featured-topic-card {
        background: var(--bg-white);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: all 0.3s ease;
        height: 100%;
        border: 1px solid var(--border-color);
        position: relative;
    }
    .featured-topic-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-4px);
        border-color: var(--primary);
    }
    .featured-topic-card .card-img-wrap {
        position: relative;
        overflow: hidden;
        aspect-ratio: 16 / 9;
    }
    .featured-topic-card .card-img-wrap img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .featured-topic-card:hover .card-img-wrap img {
        transform: scale(1.05);
    }
    .featured-topic-card .topic-badge {
        position: absolute;
        top: 12px;
        left: 12px;
        background: var(--accent-orange);
        color: #fff;
        font-size: 0.75rem;
        font-weight: 600;
        padding: 4px 10px;
        border-radius: var(--radius-badge);
        z-index: 2;
    }
    .featured-topic-card .card-body {
        padding: 20px 22px;
    }
    .featured-topic-card .card-title {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 8px;
    }
    .featured-topic-card .card-text {
        font-size: 0.88rem;
        color: var(--text-muted);
        line-height: 1.65;
        margin-bottom: 12px;
    }
    .featured-topic-card .card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 0.78rem;
        color: var(--text-muted);
        flex-wrap: wrap;
    }
    .featured-topic-card .card-meta .meta-item {
        display: flex;
        align-items: center;
        gap: 4px;
    }
    .featured-topic-card .card-meta .fa-circle {
        font-size: 0.35rem;
        color: var(--accent-orange);
    }
    /* ========== Editor Picks (Horizontal Cards) ========== */
    .editor-pick-card {
        background: var(--bg-white);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: all 0.3s ease;
        height: 100%;
        border: 1px solid var(--border-color);
        display: flex;
        flex-direction: column;
    }
    .editor-pick-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-3px);
        border-color: var(--accent-orange);
    }
    .editor-pick-card .pick-img {
        width: 100%;
        height: 180px;
        object-fit: cover;
        flex-shrink: 0;
    }
    .editor-pick-card .pick-body {
        padding: 18px 20px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
    }
    .editor-pick-card .pick-label {
        display: inline-flex;
        align-items: center;
        gap: 5px;
        font-size: 0.75rem;
        font-weight: 600;
        color: var(--accent-orange);
        margin-bottom: 8px;
    }
    .editor-pick-card .pick-title {
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 6px;
        line-height: 1.4;
    }
    .editor-pick-card .pick-desc {
        font-size: 0.85rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 10px;
    }
    .editor-pick-card .pick-meta {
        margin-top: auto;
        font-size: 0.78rem;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 8px;
    }
    /* ========== Authors / Columns ========== */
    .author-card {
        background: var(--bg-white);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        padding: 20px;
        text-align: center;
        border: 1px solid var(--border-color);
        transition: all 0.3s ease;
        height: 100%;
    }
    .author-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-3px);
        border-color: var(--primary);
    }
    .author-avatar {
        width: 64px;
        height: 64px;
        border-radius: 50%;
        background: var(--primary-light);
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        font-weight: 700;
        margin-bottom: 12px;
    }
    .author-name {
        font-size: 0.95rem;
        font-weight: 600;
        color: var(--text-dark);
        margin-bottom: 4px;
    }
    .author-role {
        font-size: 0.78rem;
        color: var(--accent-orange);
        font-weight: 500;
        margin-bottom: 6px;
    }
    .author-desc {
        font-size: 0.8rem;
        color: var(--text-muted);
        line-height: 1.55;
        margin-bottom: 0;
    }
    /* ========== Latest Topics List ========== */
    .latest-topic-list {
        background: var(--bg-white);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        border: 1px solid var(--border-color);
        padding: 24px;
    }
    .latest-topic-list .list-item {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 14px 0;
        border-bottom: 1px solid var(--border-color);
        transition: all 0.2s ease;
        cursor: pointer;
        text-decoration: none;
    }
    .latest-topic-list .list-item:last-child {
        border-bottom: none;
    }
    .latest-topic-list .list-item:hover {
        padding-left: 6px;
    }
    .latest-topic-list .list-index {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--border-color);
        min-width: 28px;
        flex-shrink: 0;
    }
    .latest-topic-list .list-content {
        flex-grow: 1;
    }
    .latest-topic-list .list-title {
        font-size: 0.92rem;
        font-weight: 500;
        color: var(--text-dark);
        margin-bottom: 2px;
    }
    .latest-topic-list .list-meta {
        font-size: 0.78rem;
        color: var(--text-muted);
        display: flex;
        gap: 12px;
    }
    .latest-topic-list .list-arrow {
        color: var(--border-color);
        font-size: 0.8rem;
        flex-shrink: 0;
        transition: all 0.2s ease;
    }
    .latest-topic-list .list-item:hover .list-arrow {
        color: var(--primary);
        transform: translateX(4px);
    }
    /* ========== Archive Accordion ========== */
    .archive-item {
        background: var(--bg-white);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        border: 1px solid var(--border-color);
        margin-bottom: 12px;
        overflow: hidden;
    }
    .archive-item .archive-header {
        padding: 16px 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
        transition: background 0.2s ease;
        user-select: none;
    }
    .archive-item .archive-header:hover {
        background: var(--primary-light);
    }
    .archive-item .archive-year {
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-dark);
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .archive-item .archive-count {
        font-size: 0.8rem;
        color: var(--text-muted);
        font-weight: 400;
    }
    .archive-item .archive-toggle {
        color: var(--text-muted);
        transition: transform 0.25s ease;
        font-size: 0.85rem;
    }
    .archive-item.active .archive-toggle {
        transform: rotate(180deg);
        color: var(--primary);
    }
    .archive-item .archive-content {
        display: none;
        padding: 0 20px 16px;
        border-top: 1px solid var(--border-color);
    }
    .archive-item.active .archive-content {
        display: block;
    }
    .archive-item .archive-link {
        display: block;
        padding: 8px 0;
        font-size: 0.88rem;
        color: var(--text-muted);
        text-decoration: none;
        border-bottom: 1px dashed var(--border-color);
        transition: color 0.2s ease;
    }
    .archive-item .archive-link:last-child {
        border-bottom: none;
    }
    .archive-item .archive-link:hover {
        color: var(--primary);
    }
    /* ========== Data Snapshot ========== */
    .snapshot-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }
    .snapshot-card {
        background: var(--bg-white);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        padding: 20px;
        text-align: center;
        border: 1px solid var(--border-color);
        transition: all 0.3s ease;
    }
    .snapshot-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-3px);
    }
    .snapshot-number {
        font-size: 1.9rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 4px;
    }
    .snapshot-label {
        font-size: 0.85rem;
        color: var(--text-muted);
        font-weight: 500;
    }
    .snapshot-icon {
        font-size: 1.3rem;
        color: var(--accent-orange);
        margin-bottom: 8px;
    }
    /* ========== Subscribe CTA ========== */
    .subscribe-cta {
        background: linear-gradient(135deg, #1B6CA8 0%, #155A8A 100%);
        border-radius: var(--radius-card);
        padding: 44px 36px;
        color: #fff;
        box-shadow: var(--shadow-card-hover);
        position: relative;
        overflow: hidden;
    }
    .subscribe-cta::after {
        content: '';
        position: absolute;
        top: -50%;
        right: -10%;
        width: 300px;
        height: 300px;
        background: rgba(255, 255, 255, 0.05);
        border-radius: 50%;
        pointer-events: none;
    }
    .subscribe-cta .cta-title {
        font-size: 1.4rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 8px;
    }
    .subscribe-cta .cta-desc {
        color: rgba(255, 255, 255, 0.85);
        font-size: 0.9rem;
        margin-bottom: 20px;
        line-height: 1.65;
    }
    .subscribe-cta .form-control {
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.25);
        color: #fff;
        border-radius: var(--radius-btn);
        padding: 10px 16px;
        font-size: 0.9rem;
        transition: all 0.25s ease;
    }
    .subscribe-cta .form-control::placeholder {
        color: rgba(255, 255, 255, 0.6);
    }
    .subscribe-cta .form-control:focus {
        background: rgba(255, 255, 255, 0.15);
        border-color: rgba(255, 255, 255, 0.5);
        box-shadow: none;
        outline: none;
    }
    .subscribe-cta .btn-white {
        background: #fff;
        border: none;
        color: var(--primary);
        border-radius: var(--radius-btn);
        padding: 10px 22px;
        font-size: 0.9rem;
        font-weight: 600;
        transition: all 0.25s ease;
        white-space: nowrap;
    }
    .subscribe-cta .btn-white:hover {
        background: var(--primary-light);
        color: var(--primary-hover);
        transform: translateY(-2px);
    }
    /* ========== Footer ========== */
    .site-footer {
        background: #194E70;
        color: rgba(255, 255, 255, 0.85);
        padding: 48px 0 24px;
        font-size: 0.9rem;
    }
    .site-footer .footer-brand {
        font-size: 1.3rem;
        font-weight: 700;
        color: #fff;
        letter-spacing: 0.5px;
    }
    .site-footer .footer-desc {
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.7);
        line-height: 1.7;
    }
    .site-footer h6 {
        color: #fff;
        font-size: 0.9rem;
        font-weight: 600;
        margin-bottom: 14px;
    }
    .site-footer .footer-link {
        display: block;
        color: rgba(255, 255, 255, 0.7);
        text-decoration: none;
        font-size: 0.85rem;
        padding: 4px 0;
        transition: color 0.2s ease, padding-left 0.2s ease;
    }
    .site-footer .footer-link:hover {
        color: #fff;
        padding-left: 6px;
    }
    .site-footer .footer-bottom {
        margin-top: 32px;
        padding-top: 20px;
        border-top: 1px solid rgba(255, 255, 255, 0.15);
        font-size: 0.8rem;
        color: rgba(255, 255, 255, 0.6);
    }
    .site-footer .footer-bottom a {
        color: rgba(255, 255, 255, 0.6);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    .site-footer .footer-bottom a:hover {
        color: #fff;
    }
    /* ========== Responsive ========== */
    @media (max-width: 991.98px) {
        .section {
            padding: 56px 0;
        }
        .section-sm {
            padding: 36px 0;
        }
        .topic-header-section {
            padding: 40px 0 28px;
        }
        .topic-header-section h1 {
            font-size: 1.6rem;
        }
        .section-title {
            font-size: 1.35rem;
        }
        .snapshot-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .mega-panel {
            position: static;
            width: 100%;
            max-width: 100%;
            box-shadow: none;
            border: none;
            border-radius: 0;
            padding: 16px 0;
            margin-top: 8px;
        }
        .mega-panel.show {
            display: block;
            opacity: 1;
            transform: none;
        }
        .navbar-collapse {
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
            margin-top: 8px;
        }
    }
    @media (max-width: 767.98px) {
        .section {
            padding: 40px 0;
        }
        .section-sm {
            padding: 28px 0;
        }
        .topic-header-section h1 {
            font-size: 1.4rem;
        }
        .topic-header-section .subtitle {
            font-size: 0.9rem;
        }
        .section-title {
            font-size: 1.2rem;
        }
        .featured-topic-card .card-body {
            padding: 16px 18px;
        }
        .featured-topic-card .card-title {
            font-size: 1rem;
        }
        .editor-pick-card .pick-img {
            height: 150px;
        }
        .subscribe-cta {
            padding: 28px 20px;
        }
        .subscribe-cta .cta-title {
            font-size: 1.15rem;
        }
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .mega-panel {
            padding: 12px 0;
        }
        .mega-panel .mega-cta-card {
            margin-top: 8px;
        }
    }
    @media (max-width: 575.98px) {
        .snapshot-grid {
            grid-template-columns: 1fr;
            gap: 10px;
        }
        .featured-topic-card .card-img-wrap {
            aspect-ratio: 4 / 3;
        }
        .latest-topic-list .list-item {
            gap: 8px;
            padding: 10px 0;
        }
        .latest-topic-list .list-title {
            font-size: 0.85rem;
        }
        .latest-topic-list .list-meta {
            font-size: 0.72rem;
            flex-wrap: wrap;
            gap: 6px;
        }
        .archive-item .archive-header {
            padding: 12px 16px;
        }
        .archive-item .archive-link {
            font-size: 0.82rem;
        }
        .topic-header-tags .tag {
            font-size: 0.72rem;
            padding: 4px 10px;
        }
    }

/* roulang page: category3 */
:root {
            --primary: #1B6CA8;
            --primary-hover: #155A8A;
            --primary-light: #EDF4FA;
            --bg-light: #F7FAFC;
            --bg-white: #FFFFFF;
            --accent-orange: #F39C12;
            --accent-green: #27AE60;
            --text-dark: #1F2A38;
            --text-muted: #5A6A7A;
            --border-color: #E3EAF2;
            --border-input: #CBD9E6;
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-badge: 6px;
            --shadow-card: 0 8px 24px rgba(27, 108, 168, 0.08);
            --shadow-card-hover: 0 12px 32px rgba(27, 108, 168, 0.14);
            --shadow-nav: 0 2px 12px rgba(27, 108, 168, 0.06);
            --font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --section-padding: 80px 0;
            --section-padding-mobile: 48px 0;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-dark);
            background-color: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        /* ========== Header / Navigation ========== */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-nav);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow 0.3s ease;
        }
        .site-header .navbar {
            padding: 12px 0;
        }
        .navbar-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color 0.2s ease;
        }
        .navbar-brand:hover {
            color: var(--primary-hover);
        }
        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 8px;
            position: relative;
            transition: color 0.2s ease, background-color 0.2s ease;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .mega-trigger {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 8px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
            background: transparent;
        }
        .mega-trigger:hover,
        .mega-trigger[aria-expanded="true"] {
            color: var(--primary);
            background-color: var(--primary-light);
            border-color: var(--border-color);
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            right: 0;
            left: auto;
            width: 560px;
            max-width: 90vw;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--border-color);
            padding: 24px;
            z-index: 1060;
            display: none;
            opacity: 0;
            transform: translateY(10px);
            transition: opacity 0.25s ease, transform 0.25s ease;
        }
        .mega-panel.show {
            display: block;
            opacity: 1;
            transform: translateY(0);
        }
        .mega-panel .mega-heading {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .mega-panel .mega-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 10px;
            border-radius: 8px;
            color: var(--text-dark);
            font-size: 0.9rem;
            transition: all 0.2s ease;
        }
        .mega-panel .mega-link:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mega-panel .mega-icon {
            width: 30px;
            height: 30px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 6px;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .mega-panel .mega-update {
            font-size: 0.75rem;
            color: var(--accent-orange);
            font-weight: 600;
            margin-left: auto;
        }
        .mega-news {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .mega-news li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .mega-news li a {
            color: var(--text-dark);
            font-weight: 500;
            display: block;
        }
        .mega-news li a:hover {
            color: var(--primary);
        }
        .mega-news li span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .mega-cta {
            background: var(--primary-light);
            border-radius: 10px;
            padding: 16px;
            margin-top: 16px;
            text-align: center;
        }
        .mega-cta p {
            font-size: 0.88rem;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .mega-cta .btn {
            font-size: 0.85rem;
        }
        @media (max-width: 991.98px) {
            .mega-panel {
                position: static;
                width: 100%;
                max-width: 100%;
                margin-top: 8px;
                box-shadow: none;
                border-radius: 0;
                border-left: none;
                border-right: none;
                border-bottom: none;
            }
            .mega-panel.show {
                display: block;
            }
        }
        /* ========== Common Buttons / Badges ========== */
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 9px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .badge-soft-primary {
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            padding: 4px 12px;
            font-weight: 500;
            font-size: 0.8rem;
        }
        .badge-soft-orange {
            background: #FEF5E7;
            color: var(--accent-orange);
            border-radius: 20px;
            padding: 4px 12px;
            font-weight: 500;
            font-size: 0.8rem;
        }
        .badge-soft-green {
            background: #EAF8F0;
            color: var(--accent-green);
            border-radius: 20px;
            padding: 4px 12px;
            font-weight: 500;
            font-size: 0.8rem;
        }
        .section {
            padding: var(--section-padding);
        }
        @media (max-width: 767.98px) {
            .section {
                padding: var(--section-padding-mobile);
            }
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 700px;
        }
        .text-primary { color: var(--primary) !important; }
        .text-orange { color: var(--accent-orange) !important; }
        .text-green { color: var(--accent-green) !important; }
        /* ========== Breadcrumb ========== */
        .breadcrumb-custom {
            background: transparent;
            padding: 0;
            margin-bottom: 8px;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom .separator {
            color: var(--border-color);
        }
        /* ========== Ranking Page Specific ========== */
        .page-header-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px;
            border: 1px solid var(--border-color);
            margin-bottom: 32px;
        }
        .page-header-card h1 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .page-header-card .lead {
            color: var(--text-muted);
            font-size: 1.05rem;
        }
        .stat-mini-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 18px;
        }
        .stat-mini-item {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .stat-mini-item i {
            color: var(--primary);
            width: 20px;
            text-align: center;
        }
        .stat-mini-item span {
            font-weight: 600;
            color: var(--text-dark);
        }
        .switch-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }
        .switch-btn {
            padding: 8px 20px;
            border-radius: 30px;
            border: 1px solid var(--border-color);
            background: #fff;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.9rem;
            transition: all 0.2s ease;
            cursor: pointer;
        }
        .switch-btn:hover,
        .switch-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-card);
        }
        .ranking-table-wrapper {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            overflow: hidden;
        }
        .ranking-table {
            width: 100%;
            border-collapse: collapse;
            margin: 0;
        }
        .ranking-table thead {
            background: var(--bg-light);
            color: var(--text-muted);
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .ranking-table th {
            padding: 15px 20px;
            font-weight: 600;
            border-bottom: 1px solid var(--border-color);
            white-space: nowrap;
        }
        .ranking-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            vertical-align: middle;
        }
        .ranking-table tbody tr:last-child td {
            border-bottom: none;
        }
        .ranking-table tbody tr:hover {
            background: #F7FAFC;
        }
        .rank-number {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--primary);
            width: 50px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .rank-item .thumb {
            width: 42px;
            height: 42px;
            border-radius: 8px;
            object-fit: cover;
            background: var(--primary-light);
            flex-shrink: 0;
        }
        .rank-item .info h6 {
            margin: 0;
            font-weight: 600;
            font-size: 0.95rem;
        }
        .rank-item .info p {
            margin: 0;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .trend-up {
            color: var(--accent-green);
            font-weight: 600;
        }
        .trend-down {
            color: #E74C3C;
            font-weight: 600;
        }
        .trend-stable {
            color: var(--text-muted);
            font-weight: 600;
        }
        .heat-bar {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .heat-bar .fill {
            height: 6px;
            border-radius: 4px;
            background: var(--primary);
            max-width: 100px;
        }
        .rising-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            overflow: hidden;
            height: 100%;
        }
        .rising-card .rising-img {
            height: 160px;
            object-fit: cover;
            width: 100%;
        }
        .rising-card .rising-body {
            padding: 20px;
        }
        .rising-card .rising-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .rising-card .rising-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .rise-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .rise-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .rise-list li:last-child {
            border-bottom: none;
        }
        .rise-list .rise-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .rise-list .rise-info {
            flex: 1;
        }
        .rise-list .rise-info h6 {
            margin: 0;
            font-size: 0.9rem;
            font-weight: 600;
        }
        .rise-list .rise-info p {
            margin: 0;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .data-note {
            background: var(--primary-light);
            border-radius: var(--radius-card);
            padding: 28px;
            border-left: 4px solid var(--primary);
        }
        .data-note h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .data-note p,
        .data-note li {
            font-size: 0.95rem;
            color: var(--text-dark);
        }
        .compare-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            height: 100%;
        }
        .compare-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .compare-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .compare-row:last-child {
            border-bottom: none;
        }
        .compare-row .value {
            font-weight: 700;
            color: var(--primary);
        }
        .compare-row .value.up {
            color: var(--accent-green);
        }
        .compare-row .value.down {
            color: #E74C3C;
        }
        .cta-box {
            background: linear-gradient(135deg, #F7FAFC 0%, #EAF3FA 100%);
            border-radius: var(--radius-card);
            padding: 48px 32px;
            text-align: center;
            border: 1px solid var(--border-color);
        }
        .cta-box h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-box p {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 24px;
        }
        .newsletter-form {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            max-width: 480px;
            margin: 0 auto;
        }
        .newsletter-form input {
            flex: 1;
            min-width: 200px;
            padding: 10px 16px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border-input);
            background: #fff;
            font-size: 0.95rem;
        }
        .newsletter-form input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(27,108,168,0.1);
        }
        /* ========== Footer ========== */
        .site-footer {
            background: #194E70;
            color: rgba(255,255,255,0.85);
            padding: 60px 0 24px;
            font-size: 0.9rem;
        }
        .site-footer a {
            color: rgba(255,255,255,0.85);
            transition: color 0.2s ease;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .footer-desc {
            line-height: 1.7;
            color: rgba(255,255,255,0.7);
        }
        .site-footer h6 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .site-footer .footer-link {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            margin-top: 40px;
            padding-top: 20px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.65);
        }
        @media (max-width: 575.98px) {
            .page-header-card {
                padding: 24px 18px;
            }
            .page-header-card h1 {
                font-size: 1.8rem;
            }
            .ranking-table th,
            .ranking-table td {
                padding: 10px 12px;
                font-size: 0.85rem;
            }
            .rank-item .thumb {
                width: 30px;
                height: 30px;
            }
            .cta-box {
                padding: 32px 18px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}