/* roulang page: index */
:root {
            --primary: #0f1a3a;
            --primary-light: #1a2d5a;
            --accent: #c9a84c;
            --accent-hover: #dbb95d;
            --bg-body: #f4f6fa;
            --bg-card: #ffffff;
            --text-dark: #0a0e1a;
            --text-main: #1f2a44;
            --text-muted: #6b7a8f;
            --border-light: #e2e7ef;
            --shadow-sm: 0 2px 8px rgba(15, 26, 58, 0.06);
            --shadow-md: 0 6px 24px rgba(15, 26, 58, 0.10);
            --shadow-lg: 0 12px 40px rgba(15, 26, 58, 0.14);
            --radius: 12px;
            --radius-lg: 20px;
            --nav-width: 240px;
            --font-sans: 'Segoe UI', 'PingFang SC', Roboto, 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --transition: all 0.25s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            display: flex;
            min-height: 100vh;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ===== 左侧导航 ===== */
        .sidebar {
            width: var(--nav-width);
            background: var(--primary);
            color: #fff;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1050;
            display: flex;
            flex-direction: column;
            padding: 28px 0 20px;
            transition: var(--transition);
            overflow-y: auto;
        }
        .sidebar .logo {
            padding: 0 20px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 20px;
        }
        .sidebar .logo a {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar .logo a i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .sidebar .logo a span {
            font-size: 0.85rem;
            font-weight: 400;
            opacity: 0.7;
            display: block;
            margin-top: 2px;
        }
        .sidebar .nav-list {
            list-style: none;
            padding: 0 12px;
            flex: 1;
        }
        .sidebar .nav-list li {
            margin-bottom: 4px;
        }
        .sidebar .nav-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .sidebar .nav-list a i {
            width: 20px;
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .sidebar .nav-list a:hover,
        .sidebar .nav-list a.active {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .sidebar .nav-list a.active i {
            color: var(--accent);
        }
        .sidebar .nav-list a.active {
            border-left: 3px solid var(--accent);
        }
        .sidebar .footer-mini {
            padding: 16px 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }
        /* ===== 右侧主内容 ===== */
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        /* ===== 移动端顶栏 ===== */
        .mobile-topbar {
            display: none;
            background: var(--primary);
            padding: 12px 20px;
            position: sticky;
            top: 0;
            z-index: 1040;
            align-items: center;
            justify-content: space-between;
        }
        .mobile-topbar .logo-sm a {
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .mobile-topbar .logo-sm a i {
            color: var(--accent);
            margin-right: 8px;
        }
        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1060;
        }
        .mobile-overlay.show {
            display: block;
        }
        .sidebar.mobile-show {
            transform: translateX(0);
        }
        @media (max-width: 991px) {
            body {
                flex-direction: column;
            }
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            .sidebar.mobile-show {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
        }
        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            background: var(--primary) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            padding: 60px 0;
            isolation: isolate;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 58, 0.88) 0%, rgba(26, 45, 90, 0.72) 100%);
            z-index: 0;
        }
        .hero .container-custom {
            position: relative;
            z-index: 1;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .hero h1 .accent {
            color: var(--accent);
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 580px;
            opacity: 0.9;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .hero .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(201, 168, 76, 0.35);
        }
        .hero .btn-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(201, 168, 76, 0.45);
            color: var(--primary);
        }
        .hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .hero .hero-tags span {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 360px;
                padding: 40px 0;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
        }
        /* ===== 通用板块 ===== */
        .section {
            padding: 70px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin-bottom: 16px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }
        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-card);
            border: none;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-custom .card-img-top {
            height: 180px;
            object-fit: cover;
        }
        .card-custom .card-body {
            padding: 20px;
        }
        .card-custom .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .card-custom .card-text {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .card-custom .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 12px;
        }
        .card-custom .badge-tag {
            background: var(--accent);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 20px;
        }
        /* ===== 分类入口网格 ===== */
        .category-grid .cat-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
            height: 100%;
        }
        .category-grid .cat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .category-grid .cat-item i {
            font-size: 2.4rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .category-grid .cat-item h5 {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
        }
        .category-grid .cat-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--primary);
            color: #fff;
        }
        .stats-section .stat-item {
            text-align: center;
            padding: 20px;
        }
        .stats-section .stat-item .number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
        }
        .stats-section .stat-item .label {
            font-size: 0.95rem;
            opacity: 0.8;
            margin-top: 4px;
        }
        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 18px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-item .faq-q {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item .faq-q i {
            color: var(--accent);
            transition: var(--transition);
        }
        .faq-item .faq-a {
            color: var(--text-muted);
            padding-top: 10px;
            font-size: 0.95rem;
            line-height: 1.7;
        }
        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            text-align: center;
            padding: 60px 0;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
        }
        .cta-section p {
            opacity: 0.85;
            max-width: 520px;
            margin: 12px auto 28px;
        }
        .cta-section .btn-cta-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 40px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            border: none;
            border-radius: 50px;
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .cta-section .btn-cta-light:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 168, 76, 0.3);
        }
        /* ===== 内容列表 ===== */
        .list-item-cms {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .list-item-cms:last-child {
            border-bottom: none;
        }
        .list-item-cms .list-img {
            width: 100px;
            height: 72px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .list-item-cms .list-body {
            flex: 1;
        }
        .list-item-cms .list-title {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 1rem;
            margin-bottom: 4px;
            display: block;
        }
        .list-item-cms .list-title:hover {
            color: var(--accent);
        }
        .list-item-cms .list-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .list-item-cms .list-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
            margin-top: 4px;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 40px 0 24px;
            margin-top: auto;
        }
        .site-footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .site-footer .footer-brand i {
            color: var(--accent);
            margin-right: 8px;
        }
        .site-footer p {
            font-size: 0.9rem;
            margin-bottom: 6px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-right: 20px;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
        }
        .site-footer .footer-divider {
            border-color: rgba(255, 255, 255, 0.08);
            margin: 20px 0 16px;
        }
        .site-footer .copyright {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        /* ===== 通用工具 ===== */
        .text-accent {
            color: var(--accent) !important;
        }
        .bg-accent {
            background: var(--accent) !important;
        }
        .btn-outline-accent {
            border: 2px solid var(--accent);
            color: var(--accent);
            background: transparent;
            border-radius: 50px;
            padding: 10px 28px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-outline-accent:hover {
            background: var(--accent);
            color: var(--primary);
        }
        .gap-section {
            height: 1px;
            background: var(--border-light);
            margin: 0;
        }
        @media (max-width: 576px) {
            .container-custom {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .list-item-cms {
                flex-direction: column;
            }
            .list-item-cms .list-img {
                width: 100%;
                height: 140px;
            }
            .stats-section .stat-item .number {
                font-size: 2rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #f0b34b;
            --accent-hover: #e8a232;
            --accent-light: #fce6b8;
            --bg-body: #f5f7fa;
            --bg-card: #ffffff;
            --bg-sidebar: #0f1f2f;
            --bg-sidebar-hover: #1a2f42;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-light: #7a8a9a;
            --text-white: #f0f4f8;
            --border-light: #e2e8f0;
            --border-card: #e8edf2;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --sidebar-width: 240px;
            --header-height: 0px;
            --transition: all 0.25s ease;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-family);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.6;
            display: flex;
            min-height: 100vh;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }
        /* ===== Sidebar ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            color: var(--text-white);
            display: flex;
            flex-direction: column;
            z-index: 1050;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.15);
            transition: transform 0.3s ease;
        }
        .sidebar .logo {
            padding: 28px 20px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .sidebar .logo a {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .sidebar .logo a i {
            font-size: 1.8rem;
            color: var(--accent);
        }
        .sidebar .logo a div {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .sidebar .logo a span {
            font-size: 0.7rem;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.5);
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        .sidebar .nav-list {
            list-style: none;
            padding: 16px 12px;
            margin: 0;
            flex: 1;
            overflow-y: auto;
        }
        .sidebar .nav-list li {
            margin-bottom: 4px;
        }
        .sidebar .nav-list li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .sidebar .nav-list li a i {
            width: 20px;
            text-align: center;
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.4);
            transition: var(--transition);
        }
        .sidebar .nav-list li a:hover {
            background: var(--bg-sidebar-hover);
            color: #fff;
        }
        .sidebar .nav-list li a:hover i {
            color: var(--accent);
        }
        .sidebar .nav-list li a.active {
            background: rgba(240, 179, 75, 0.15);
            color: var(--accent);
        }
        .sidebar .nav-list li a.active i {
            color: var(--accent);
        }
        .sidebar .footer-mini {
            padding: 16px 20px;
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.3);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
        }
        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--bg-sidebar);
            z-index: 1060;
            padding: 0 16px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
        }
        .mobile-header .logo-sm {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
        }
        .mobile-header .logo-sm i {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .mobile-header .menu-toggle {
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            padding: 4px 8px;
            cursor: pointer;
            border-radius: 6px;
            transition: var(--transition);
        }
        .mobile-header .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        /* ===== Main Content ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        /* ===== Hero Banner ===== */
        .guide-hero {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, #0f1f2f 0%, #1a3a5c 50%, #0f2440 100%);
            overflow: hidden;
            min-height: 300px;
            display: flex;
            align-items: center;
        }
        .guide-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .guide-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 31, 47, 0.85) 0%, rgba(26, 58, 92, 0.6) 100%);
            z-index: 1;
        }
        .guide-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .guide-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .guide-hero h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .guide-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 680px;
            margin-bottom: 0;
            line-height: 1.7;
        }
        .guide-hero .hero-badge {
            display: inline-block;
            background: rgba(240, 179, 75, 0.2);
            color: var(--accent);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(240, 179, 75, 0.3);
        }
        @media (max-width: 768px) {
            .guide-hero {
                padding: 60px 0 48px;
                min-height: 220px;
            }
            .guide-hero h1 {
                font-size: 1.8rem;
            }
            .guide-hero p {
                font-size: 0.95rem;
            }
        }
        /* ===== Section ===== */
        .section-guide {
            padding: 64px 0;
        }
        .section-guide .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }
        .section-guide .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 36px;
        }
        @media (max-width: 768px) {
            .section-guide {
                padding: 40px 0;
            }
            .section-guide .section-title {
                font-size: 1.4rem;
            }
        }
        /* ===== Steps ===== */
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            transition: var(--transition);
            position: relative;
            height: 100%;
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent-light);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }
        .step-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }
        /* ===== Guide Cards ===== */
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .guide-card .card-img {
            height: 180px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .guide-card .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body .tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--primary-dark);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .guide-card .card-body h5 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .guide-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }
        .guide-card .card-body .card-link {
            font-weight: 600;
            color: var(--primary-light);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .guide-card .card-body .card-link i {
            transition: var(--transition);
        }
        .guide-card .card-body .card-link:hover i {
            transform: translateX(4px);
        }
        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-card);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--accent-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
        }
        .faq-item .faq-question i {
            color: var(--accent);
            transition: var(--transition);
        }
        .faq-item .faq-answer {
            margin-top: 12px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        /* ===== CTA ===== */
        .cta-guide {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            margin-top: 16px;
        }
        .cta-guide h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-guide p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 520px;
            margin: 0 auto 24px;
        }
        .cta-guide .btn-cta {
            background: var(--accent);
            color: var(--primary-dark);
            border: none;
            padding: 14px 40px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-guide .btn-cta:hover {
            background: var(--accent-hover);
            transform: scale(1.03);
            box-shadow: 0 8px 30px rgba(240, 179, 75, 0.3);
        }
        @media (max-width: 768px) {
            .cta-guide {
                padding: 32px 20px;
            }
            .cta-guide h3 {
                font-size: 1.3rem;
            }
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-sidebar);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 32px;
            margin-top: auto;
        }
        .site-footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-footer .footer-brand i {
            color: var(--accent);
        }
        .site-footer p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 8px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-divider {
            border-color: rgba(255, 255, 255, 0.08);
            margin: 24px 0 16px;
        }
        .site-footer .copyright {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .sidebar {
                width: 200px;
            }
            .main-content {
                margin-left: 200px;
            }
        }
        @media (max-width: 768px) {
            body {
                flex-direction: column;
                padding-top: 60px;
            }
            .sidebar {
                transform: translateX(-100%);
                width: 260px;
                z-index: 1070;
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
            }
            .site-footer {
                padding: 32px 0 24px;
            }
        }
        @media (max-width: 520px) {
            .guide-hero h1 {
                font-size: 1.5rem;
            }
            .guide-hero p {
                font-size: 0.88rem;
            }
            .step-card {
                padding: 20px 16px;
            }
            .cta-guide h3 {
                font-size: 1.1rem;
            }
            .cta-guide .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }
        /* ===== Overlay ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 1065;
        }
        .sidebar-overlay.show {
            display: block;
        }
        @media (max-width: 768px) {
            .sidebar-overlay.show {
                display: block;
            }
        }
        /* ===== Utilities ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-soft-accent {
            background: var(--accent-light);
        }
        .gap-section {
            gap: 32px 0;
        }
        .fw-700 {
            font-weight: 700;
        }
        .ls-tight {
            letter-spacing: -0.3px;
        }
        .rounded-custom {
            border-radius: var(--radius-md);
        }
        .shadow-custom {
            box-shadow: var(--shadow-md);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0d2137;
            --primary-light: #1a4a7a;
            --primary-dark: #081524;
            --accent: #f5a623;
            --accent-light: #f7b84a;
            --accent-dark: #d48e1a;
            --bg-body: #f4f6f9;
            --bg-card: #ffffff;
            --bg-dark: #0d2137;
            --text-dark: #1a1a2e;
            --text-muted: #6c757d;
            --text-light: #f8f9fa;
            --border: #e9ecef;
            --border-light: #f0f2f5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.10);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.14);
            --sidebar-width: 270px;
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-dark);
            line-height: 1.7;
            display: flex;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; }
        ul { list-style: none; padding: 0; margin: 0; }

        /* ===== Container ===== */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ===== Sidebar ===== */
        .sidebar {
            width: var(--sidebar-width);
            min-height: 100vh;
            background: var(--primary);
            color: var(--text-light);
            display: flex;
            flex-direction: column;
            position: fixed;
            top: 0;
            left: 0;
            z-index: 1040;
            padding: 1.8rem 1.2rem 1rem;
            transition: transform var(--transition);
            overflow-y: auto;
            border-right: 1px solid rgba(255,255,255,0.06);
        }
        .sidebar .logo a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: #fff;
            font-size: 1.35rem;
            font-weight: 700;
            padding: 0.5rem 0.6rem 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 1.2rem;
            transition: var(--transition);
        }
        .sidebar .logo a:hover { color: var(--accent); }
        .sidebar .logo a i { font-size: 1.8rem; color: var(--accent); }
        .sidebar .logo a div { line-height: 1.3; }
        .sidebar .logo a span { display: block; font-size: 0.7rem; font-weight: 400; opacity: 0.7; letter-spacing: 0.5px; }
        .nav-list { flex: 1; }
        .nav-list li { margin-bottom: 0.25rem; }
        .nav-list li a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .nav-list li a i { width: 1.2rem; font-size: 1rem; color: rgba(255,255,255,0.5); }
        .nav-list li a:hover {
            background: rgba(255,255,255,0.08);
            color: #fff;
        }
        .nav-list li a.active {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            box-shadow: 0 2px 12px rgba(245,166,35,0.3);
        }
        .nav-list li a.active i { color: var(--primary-dark); }
        .sidebar .footer-mini {
            font-size: 0.75rem;
            opacity: 0.5;
            text-align: center;
            padding-top: 1rem;
            border-top: 1px solid rgba(255,255,255,0.06);
            margin-top: 1rem;
        }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--primary);
            padding: 0.6rem 1.2rem;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 12px rgba(0,0,0,0.3);
        }
        .mobile-header .logo-text {
            color: #fff;
            font-weight: 700;
            font-size: 1.15rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .mobile-header .logo-text i { color: var(--accent); font-size: 1.4rem; }
        .mobile-header .btn-menu {
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            line-height: 1;
        }
        .mobile-header .btn-menu:focus { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

        /* ===== Offcanvas Nav (Mobile) ===== */
        .offcanvas.offcanvas-start {
            width: var(--sidebar-width);
            background: var(--primary);
            color: var(--text-light);
        }
        .offcanvas.offcanvas-start .offcanvas-header {
            border-bottom: 1px solid rgba(255,255,255,0.08);
            padding: 1rem 1.2rem;
        }
        .offcanvas.offcanvas-start .offcanvas-header .offcanvas-title {
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .offcanvas.offcanvas-start .offcanvas-header .offcanvas-title i { color: var(--accent); }
        .offcanvas.offcanvas-start .btn-close {
            filter: invert(1) brightness(2);
            opacity: 0.7;
        }
        .offcanvas.offcanvas-start .nav-list { padding: 1rem 0.8rem; }
        .offcanvas.offcanvas-start .nav-list li a {
            color: rgba(255,255,255,0.75);
        }
        .offcanvas.offcanvas-start .nav-list li a.active {
            background: var(--accent);
            color: var(--primary-dark);
        }

        /* ===== Main Content ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: var(--bg-body);
            padding-top: 0;
        }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            padding: 4rem 2rem 3rem;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
            min-height: 280px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .article-banner .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .article-banner .article-category {
            display: inline-block;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.25rem 1rem;
            border-radius: 50px;
            margin-bottom: 1rem;
            letter-spacing: 0.5px;
        }
        .article-banner h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 0.75rem;
            text-shadow: 0 2px 8px rgba(0,0,0,0.2);
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        .article-banner .article-meta {
            font-size: 0.9rem;
            opacity: 0.85;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
            justify-content: center;
        }
        .article-banner .article-meta i { margin-right: 0.4rem; color: var(--accent); }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 0.7rem 0;
        }
        .breadcrumb-wrap .breadcrumb {
            background: transparent;
            margin: 0;
            padding: 0;
            font-size: 0.85rem;
        }
        .breadcrumb-wrap .breadcrumb-item + .breadcrumb-item::before {
            content: '›';
            color: var(--text-muted);
        }
        .breadcrumb-wrap .breadcrumb-item a { color: var(--primary-light); }
        .breadcrumb-wrap .breadcrumb-item.active { color: var(--text-muted); }

        /* ===== Article Body ===== */
        .article-body {
            padding: 2.5rem 0;
            flex: 1;
        }
        .article-content {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 2.5rem 2.8rem;
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-dark);
        }
        .article-content h2, .article-content h3, .article-content h4 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            font-weight: 700;
            color: var(--primary-dark);
        }
        .article-content h2 { font-size: 1.6rem; border-bottom: 2px solid var(--border-light); padding-bottom: 0.5rem; }
        .article-content h3 { font-size: 1.3rem; }
        .article-content p { margin-bottom: 1.2rem; }
        .article-content ul, .article-content ol { margin-bottom: 1.2rem; padding-left: 1.5rem; }
        .article-content li { margin-bottom: 0.4rem; }
        .article-content a { color: var(--accent-dark); text-decoration: underline; }
        .article-content a:hover { color: var(--accent); }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: #fef9ef;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #555;
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 1.5rem auto;
            box-shadow: var(--shadow-sm);
            max-width: 100%;
        }
        .article-content code {
            background: #f0f2f5;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-size: 0.9em;
        }
        .article-content pre {
            background: var(--primary-dark);
            color: #e8e8e8;
            padding: 1.2rem 1.5rem;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 1.5rem 0;
        }

        /* ===== Article Tags ===== */
        .article-tags {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            align-items: center;
        }
        .article-tags .tag {
            display: inline-block;
            background: #f0f2f5;
            color: var(--text-dark);
            font-size: 0.8rem;
            padding: 0.3rem 1rem;
            border-radius: 50px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .article-tags .tag:hover {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }

        /* ===== Article Navigation (Prev/Next) ===== */
        .article-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 2rem;
            padding: 1.5rem 2.8rem;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .article-nav .nav-item {
            flex: 1;
            min-width: 200px;
        }
        .article-nav .nav-item a {
            display: flex;
            flex-direction: column;
            padding: 0.8rem 1rem;
            border-radius: var(--radius-sm);
            background: var(--bg-body);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .article-nav .nav-item a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .article-nav .nav-item .nav-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 0.2rem;
        }
        .article-nav .nav-item .nav-title {
            font-weight: 600;
            font-size: 0.95rem;
            line-height: 1.4;
        }
        .article-nav .nav-item.text-end { text-align: right; }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 2.5rem 0 1.5rem;
        }
        .related-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .related-section h2 i { color: var(--accent); }
        .related-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            border: 1px solid var(--border-light);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .related-card .card-img {
            height: 180px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 1.2rem 1.2rem 1.4rem;
        }
        .related-card .card-body .card-cat {
            font-size: 0.75rem;
            color: var(--accent-dark);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 0.3rem;
        }
        .related-card .card-body h5 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }
        .related-card .card-body h5 a { color: var(--text-dark); }
        .related-card .card-body h5 a:hover { color: var(--accent-dark); }
        .related-card .card-body .card-text {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 2.5rem 0 3.5rem;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-box .cta-content { position: relative; z-index: 2; }
        .cta-box h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 0.6rem;
        }
        .cta-box p {
            font-size: 1.05rem;
            opacity: 0.9;
            margin-bottom: 1.5rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-box .btn-cta {
            display: inline-block;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1rem;
            padding: 0.8rem 2.5rem;
            border-radius: 50px;
            transition: var(--transition);
            border: 2px solid var(--accent);
            box-shadow: 0 4px 20px rgba(245,166,35,0.3);
        }
        .cta-box .btn-cta:hover {
            background: transparent;
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 28px rgba(245,166,35,0.2);
        }

        /* ===== Error State ===== */
        .error-state {
            text-align: center;
            padding: 4rem 2rem;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .error-state i {
            font-size: 3.5rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }
        .error-state h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .error-state p {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 1.5rem;
        }
        .error-state .btn-home {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 0.7rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .error-state .btn-home:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 3rem 0 1.8rem;
            margin-top: auto;
            border-top: 3px solid var(--accent);
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.6rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .site-footer .footer-brand i { color: var(--accent); }
        .site-footer p { font-size: 0.9rem; margin-bottom: 0.5rem; line-height: 1.6; }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }
        .site-footer .footer-links a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover { color: var(--accent); padding-left: 4px; }
        .site-footer .footer-divider {
            border-color: rgba(255,255,255,0.1);
            margin: 1.5rem 0 1rem;
        }
        .site-footer .copyright {
            font-size: 0.8rem;
            opacity: 0.6;
        }

        /* ===== Scroll to Top ===== */
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            z-index: 1030;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .scroll-top:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-banner h1 { font-size: 1.9rem; }
            .article-content { padding: 2rem 1.8rem; }
            .article-nav { padding: 1.2rem 1.8rem; }
        }

        @media (max-width: 991px) {
            .sidebar { display: none; }
            .mobile-header { display: flex; }
            .main-content { margin-left: 0; padding-top: 62px; }
            .article-banner { padding: 3rem 1.5rem 2.5rem; min-height: 220px; }
            .article-banner h1 { font-size: 1.7rem; }
            .cta-box { padding: 2rem 1.5rem; }
            .cta-box h3 { font-size: 1.4rem; }
        }

        @media (max-width: 768px) {
            .article-banner { padding: 2.5rem 1rem 2rem; min-height: 180px; }
            .article-banner h1 { font-size: 1.4rem; }
            .article-banner .article-meta { font-size: 0.8rem; gap: 0.5rem 1rem; }
            .article-content { padding: 1.5rem 1.2rem; font-size: 0.95rem; }
            .article-content h2 { font-size: 1.3rem; }
            .article-content h3 { font-size: 1.1rem; }
            .article-nav { flex-direction: column; padding: 1rem 1.2rem; }
            .article-nav .nav-item.text-end { text-align: left; }
            .related-section h2 { font-size: 1.3rem; }
            .cta-box h3 { font-size: 1.2rem; }
            .cta-box p { font-size: 0.9rem; }
            .cta-box .btn-cta { font-size: 0.9rem; padding: 0.6rem 1.8rem; }
            .site-footer { padding: 2rem 0 1.2rem; }
            .scroll-top { width: 40px; height: 40px; font-size: 1rem; bottom: 1.2rem; right: 1.2rem; }
        }

        @media (max-width: 520px) {
            .container-custom { padding: 0 1rem; }
            .article-banner h1 { font-size: 1.2rem; }
            .article-content { padding: 1rem 0.8rem; border-radius: var(--radius-sm); }
            .article-tags .tag { font-size: 0.7rem; padding: 0.2rem 0.7rem; }
            .related-card .card-img { height: 140px; }
            .cta-box { border-radius: var(--radius-md); padding: 1.5rem 1rem; }
            .cta-box h3 { font-size: 1.1rem; }
        }

        /* ===== Print ===== */
        @media print {
            .sidebar, .mobile-header, .scroll-top, .cta-section, .related-section { display: none !important; }
            .main-content { margin-left: 0 !important; padding-top: 0 !important; }
            .article-banner { padding: 1.5rem; background: #fff !important; color: #000 !important; }
            .article-banner::before { display: none; }
            .article-banner h1 { color: #000; text-shadow: none; }
            .article-content { box-shadow: none; border: 1px solid #ddd; }
        }