/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --primary-dark: #3730a3;
            --primary-bg: #eef2ff;
            --accent: #f97316;
            --accent-light: #fb923c;
            --accent-dark: #ea580c;
            --neutral-50: #f8fafc;
            --neutral-100: #f1f5f9;
            --neutral-200: #e2e8f0;
            --neutral-300: #cbd5e1;
            --neutral-400: #94a3b8;
            --neutral-500: #64748b;
            --neutral-600: #475569;
            --neutral-700: #334155;
            --neutral-800: #1e293b;
            --neutral-900: #0f172a;
            --white: #ffffff;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --sidebar-width: 260px;
            --header-height: 64px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--neutral-800);
            background: var(--neutral-50);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--neutral-900);
            font-weight: 700;
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: 860px;
        }

        /* ===== 布局 ===== */
        .layout {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 侧边栏 (桌面端左侧竖向导航) ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--white);
            border-right: 1px solid var(--neutral-200);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform var(--transition);
            box-shadow: var(--shadow-md);
        }
        .sidebar-brand {
            padding: 24px 20px 16px;
            border-bottom: 1px solid var(--neutral-100);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .sidebar-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .sidebar-brand .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--neutral-900);
            line-height: 1.2;
        }
        .sidebar-brand .brand-text span {
            color: var(--primary);
        }
        .sidebar-nav {
            flex: 1;
            padding: 16px 12px;
            overflow-y: auto;
        }
        .sidebar-nav .nav-label {
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--neutral-400);
            padding: 8px 12px 6px;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            border-radius: var(--radius-md);
            color: var(--neutral-600);
            font-weight: 500;
            font-size: 15px;
            transition: all var(--transition);
            margin-bottom: 2px;
            position: relative;
        }
        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--neutral-400);
            transition: color var(--transition);
        }
        .sidebar-nav .nav-item:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .sidebar-nav .nav-item:hover i {
            color: var(--primary);
        }
        .sidebar-nav .nav-item.active {
            background: var(--primary);
            color: var(--white);
            box-shadow: var(--shadow-md);
        }
        .sidebar-nav .nav-item.active i {
            color: var(--white);
        }
        .sidebar-nav .nav-item.active::after {
            content: '';
            position: absolute;
            right: -12px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 4px 0 0 4px;
        }
        .sidebar-footer {
            padding: 16px 20px 24px;
            border-top: 1px solid var(--neutral-100);
            font-size: 13px;
            color: var(--neutral-400);
            text-align: center;
        }
        .sidebar-footer .sidebar-cta {
            display: block;
            width: 100%;
            padding: 10px 0;
            background: var(--accent);
            color: var(--white);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 14px;
            text-align: center;
            transition: background var(--transition), transform var(--transition);
        }
        .sidebar-footer .sidebar-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            color: var(--white);
        }

        /* ===== 主内容区 ===== */
        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-height: 100vh;
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: var(--white);
            border-bottom: 1px solid var(--neutral-200);
            z-index: 999;
            padding: 0 16px;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-sm);
        }
        .mobile-header .mobile-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .mobile-header .mobile-brand .brand-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 16px;
            font-weight: 700;
        }
        .mobile-header .mobile-brand .brand-text {
            font-size: 16px;
            font-weight: 700;
            color: var(--neutral-900);
        }
        .mobile-header .mobile-brand .brand-text span {
            color: var(--primary);
        }
        .mobile-header .menu-toggle {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            color: var(--neutral-600);
            font-size: 22px;
            transition: background var(--transition);
        }
        .mobile-header .menu-toggle:hover {
            background: var(--neutral-100);
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 998;
            backdrop-filter: blur(4px);
        }
        .mobile-overlay.open {
            display: block;
        }

        /* ===== 移动端侧边栏展开 ===== */
        .sidebar.open {
            transform: translateX(0);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            padding: 80px 0 100px;
            background: var(--neutral-900);
            color: var(--white);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.45;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(30, 27, 75, 0.7) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neutral-200);
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-badge i {
            color: var(--accent);
            font-size: 12px;
        }
        .hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            color: var(--white);
            max-width: 720px;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.15;
        }
        .hero h1 span {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 18px;
            color: var(--neutral-300);
            max-width: 600px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero-actions .btn-primary {
            padding: 14px 36px;
            background: var(--accent);
            color: var(--white);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .hero-actions .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.4);
            color: var(--white);
        }
        .hero-actions .btn-outline {
            padding: 14px 28px;
            background: transparent;
            color: var(--white);
            border: 2px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .hero-actions .btn-outline:hover {
            border-color: var(--white);
            background: rgba(255, 255, 255, 0.08);
            color: var(--white);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            flex-wrap: wrap;
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--white);
            display: block;
            line-height: 1.2;
        }
        .hero-stats .stat-number span {
            color: var(--accent);
        }
        .hero-stats .stat-label {
            font-size: 14px;
            color: var(--neutral-400);
            margin-top: 2px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--white);
        }
        .section-dark {
            background: var(--neutral-900);
            color: var(--white);
        }
        .section-dark h2,
        .section-dark h3 {
            color: var(--white);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--neutral-900);
        }
        .section-dark .section-header h2 {
            color: var(--white);
        }
        .section-header p {
            font-size: 17px;
            color: var(--neutral-500);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-dark .section-header p {
            color: var(--neutral-400);
        }
        .section-header .section-tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--primary-bg);
            color: var(--primary);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .section-dark .section-header .section-tag {
            background: rgba(255, 255, 255, 0.1);
            color: var(--neutral-200);
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
            border: 1px solid var(--neutral-100);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
            border-color: var(--primary-bg);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-bg);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: all var(--transition);
        }
        .card:hover .card-icon {
            background: var(--primary);
            color: var(--white);
        }
        .card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--neutral-900);
        }
        .card p {
            font-size: 15px;
            color: var(--neutral-500);
            line-height: 1.7;
        }
        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            transition: gap var(--transition);
        }
        .card .card-link:hover {
            gap: 12px;
        }

        /* ===== 图文卡片 (分类入口) ===== */
        .cover-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
            background: var(--white);
            border: 1px solid var(--neutral-100);
            cursor: pointer;
        }
        .cover-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
        }
        .cover-card .cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            transition: transform var(--transition);
        }
        .cover-card:hover .cover-img {
            transform: scale(1.03);
        }
        .cover-card .cover-body {
            padding: 20px 20px 24px;
        }
        .cover-card .cover-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .cover-card .cover-body p {
            font-size: 14px;
            color: var(--neutral-500);
            line-height: 1.6;
        }
        .cover-card .cover-body .cover-tag {
            display: inline-block;
            padding: 3px 10px;
            background: var(--primary-bg);
            color: var(--primary);
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--neutral-100);
            transition: all var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
        }
        .step-item .step-number {
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 16px;
            transition: all var(--transition);
        }
        .step-item:hover .step-number {
            background: var(--accent);
            transform: scale(1.08);
        }
        .step-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--neutral-500);
            line-height: 1.6;
        }
        .step-connector {
            display: none;
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px 24px;
            background: var(--white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--neutral-100);
            transition: all var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary-bg);
            transform: translateX(4px);
        }
        .news-item .news-icon {
            width: 40px;
            height: 40px;
            background: var(--primary-bg);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }
        .news-item .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-content h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--neutral-800);
        }
        .news-item .news-content h4 a {
            color: var(--neutral-800);
            transition: color var(--transition);
        }
        .news-item .news-content h4 a:hover {
            color: var(--primary);
        }
        .news-item .news-content p {
            font-size: 14px;
            color: var(--neutral-500);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-meta {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--neutral-400);
            margin-top: 6px;
            flex-wrap: wrap;
        }
        .news-item .news-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-item .news-meta .news-cat {
            padding: 2px 10px;
            background: var(--primary-bg);
            color: var(--primary);
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
        }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--neutral-400);
            font-size: 16px;
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--neutral-200);
        }
        .news-empty i {
            font-size: 40px;
            color: var(--neutral-300);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--neutral-100);
            transition: all var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
        }
        .stat-card .stat-icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stat-card .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--neutral-900);
            line-height: 1.2;
        }
        .stat-card .stat-number span {
            color: var(--accent);
        }
        .stat-card .stat-label {
            font-size: 15px;
            color: var(--neutral-500);
            margin-top: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--neutral-100);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-item .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--neutral-800);
            text-align: left;
            background: none;
            border: none;
            transition: color var(--transition);
        }
        .faq-item .faq-question:hover {
            color: var(--primary);
        }
        .faq-item .faq-question i {
            font-size: 14px;
            color: var(--neutral-400);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-item .faq-answer p {
            font-size: 15px;
            color: var(--neutral-600);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--primary);
            color: var(--white);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            color: var(--white);
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta-section .btn-cta-primary {
            padding: 16px 40px;
            background: var(--white);
            color: var(--primary);
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 17px;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
            color: var(--primary-dark);
            background: var(--neutral-50);
        }
        .cta-section .btn-cta-outline {
            padding: 16px 32px;
            background: transparent;
            color: var(--white);
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 17px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .btn-cta-outline:hover {
            border-color: var(--white);
            background: rgba(255, 255, 255, 0.1);
            color: var(--white);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--neutral-900);
            color: var(--neutral-400);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 12px;
        }
        .footer-brand .footer-logo span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--neutral-400);
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--white);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 16px;
            font-size: 14px;
        }
        .footer-bottom a {
            color: var(--neutral-400);
        }
        .footer-bottom a:hover {
            color: var(--white);
        }

        /* ===== 按钮通用 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--white);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: var(--white);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--white);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
            color: var(--white);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--neutral-300);
            color: var(--neutral-700);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-bg);
        }

        /* ===== 标签 ===== */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            background: var(--neutral-100);
            color: var(--neutral-600);
        }
        .tag-primary {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .tag-accent {
            background: rgba(249, 115, 22, 0.1);
            color: var(--accent);
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 100%;
            height: 1px;
            background: var(--neutral-200);
            margin: 0;
        }

        /* ===== 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
        }
        .badge-primary {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .badge-accent {
            background: rgba(249, 115, 22, 0.1);
            color: var(--accent);
        }
        .badge-success {
            background: rgba(34, 197, 94, 0.1);
            color: #16a34a;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: var(--shadow-xl);
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--header-height);
            }
            .mobile-header {
                display: flex;
            }
            .hero {
                padding: 60px 0 80px;
                min-height: auto;
            }
            .hero h1 {
                font-size: clamp(1.8rem, 6vw, 2.4rem);
            }
            .hero p {
                font-size: 16px;
            }
            .hero-stats {
                gap: 24px;
                justify-content: center;
            }
            .section {
                padding: 56px 0;
            }
            .grid-2,
            .grid-3 {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .grid-4 {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section {
                padding: 56px 0;
            }
            .news-item {
                padding: 16px 18px;
                flex-direction: column;
                gap: 12px;
            }
            .news-item .news-icon {
                width: 36px;
                height: 36px;
                font-size: 14px;
            }
            .sidebar-nav .nav-item.active::after {
                display: none;
            }
            .cover-card .cover-img {
                height: 160px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                justify-content: center;
                text-align: center;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .stat-number {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .steps {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
                align-items: center;
            }
            .hero-stats .stat-item {
                width: 100%;
                max-width: 200px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .footer-grid {
                gap: 24px;
            }
            .faq-item .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
            .card {
                padding: 20px 18px;
            }
            .news-item {
                padding: 14px 16px;
            }
            .cover-card .cover-body {
                padding: 16px 16px 20px;
            }
            .cta-section .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-section .btn-cta-primary,
            .cta-section .btn-cta-outline {
                justify-content: center;
                text-align: center;
            }
            .step-item {
                padding: 24px 16px;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #1344b0;
            --primary-light: #e8effd;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-sidebar: #0f172a;
            --bg-sidebar-hover: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-sidebar: #cbd5e1;
            --text-sidebar-active: #ffffff;
            --border-color: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
            --shadow-lg: 0 20px 40px -12px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 260px;
            --header-height: 0px;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            display: flex;
            min-height: 100vh;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== Sidebar Navigation ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            color: var(--text-sidebar);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            overflow-y: auto;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.2);
            transition: transform var(--transition);
        }

        .sidebar-header {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-logo span {
            background: var(--accent);
            color: #0f172a;
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 18px;
        }

        .sidebar-logo small {
            font-weight: 400;
            font-size: 14px;
            color: var(--text-muted);
        }

        .sidebar-nav {
            padding: 20px 16px 24px;
            flex: 1;
        }

        .nav-label {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 1.2px;
            color: var(--text-muted);
            padding: 0 12px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-sidebar);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition);
            margin-bottom: 2px;
            position: relative;
        }

        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .nav-item:hover {
            background: var(--bg-sidebar-hover);
            color: var(--text-sidebar-active);
        }

        .nav-item:hover i {
            color: var(--accent);
        }

        .nav-item.active {
            background: rgba(26, 86, 219, 0.25);
            color: var(--text-sidebar-active);
            box-shadow: inset 3px 0 0 var(--accent);
        }

        .nav-item.active i {
            color: var(--accent);
        }

        .sidebar-footer {
            padding: 16px 20px 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.5;
        }

        /* ===== Mobile Menu Toggle ===== */
        .menu-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            background: var(--bg-sidebar);
            color: #fff;
            border: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-size: 20px;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: background var(--transition);
        }

        .menu-toggle:hover {
            background: var(--bg-sidebar-hover);
        }

        .menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== Main Content Area ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, #0f172a 0%, #1a2a4a 60%, #1e3a5f 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 86, 219, 0.15) 0%, transparent 70%);
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, 0.15);
            color: var(--accent);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 20px;
            border: 1px solid rgba(245, 158, 11, 0.2);
        }

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

        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .category-hero h1 span {
            color: var(--accent);
        }

        .category-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .hero-stats-row {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-number {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat-number small {
            font-size: 16px;
            font-weight: 400;
            color: var(--accent);
        }

        .hero-stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 2px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 16px 0;
            background: transparent;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 0;
        }

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

        .breadcrumb ul li a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }

        .breadcrumb ul li a:hover {
            color: var(--primary);
        }

        .breadcrumb ul li+li::before {
            content: '/';
            margin-right: 8px;
            color: var(--text-muted);
        }

        .breadcrumb ul li:last-child {
            color: var(--text-primary);
            font-weight: 500;
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 72px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }

        .section-header h2 i {
            color: var(--accent);
            margin-right: 8px;
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-subtitle {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 16px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        /* ===== Entry Cards Grid ===== */
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }

        .entry-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }

        .entry-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .entry-card-image {
            height: 200px;
            background: var(--primary-light);
            position: relative;
            overflow: hidden;
        }

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

        .entry-card:hover .entry-card-image img {
            transform: scale(1.05);
        }

        .entry-card-image .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: #0f172a;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }

        .entry-card-body {
            padding: 24px 22px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .entry-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .entry-card-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.65;
            flex: 1;
            margin-bottom: 16px;
        }

        .entry-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-color);
            margin-top: auto;
        }

        .entry-card-footer .btn-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }

        .entry-card-footer .btn-text:hover {
            gap: 12px;
        }

        .entry-card-footer .meta {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== Steps / Flow ===== */
        .steps-section {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            counter-reset: step;
        }

        .step-item {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            position: relative;
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }

        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            margin: 0 auto 18px;
            box-shadow: 0 8px 20px rgba(26, 86, 219, 0.2);
        }

        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== Notice / Tips ===== */
        .notice-section {
            background: var(--primary-light);
        }

        .notice-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .notice-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 26px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }

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

        .notice-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }

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

        .notice-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: background var(--transition);
        }

        .faq-question:hover {
            background: var(--primary-light);
        }

        .faq-question i {
            font-size: 16px;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-question.open i {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1a2a4a 60%, #1e3a5f 100%);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }

        .btn-primary {
            background: var(--accent);
            color: #0f172a;
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(245, 158, 11, 0.4);
            color: #0f172a;
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.25);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .footer {
            background: #0b1221;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .footer-logo {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-logo span {
            background: var(--accent);
            color: #0f172a;
            padding: 2px 12px;
            border-radius: 6px;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .category-hero h1 {
                font-size: 36px;
            }
            .hero-stats-row {
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .menu-overlay.active {
                display: block;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .container {
                padding: 0 20px;
            }
            .category-hero {
                padding: 60px 0 48px;
                min-height: 240px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero p {
                font-size: 16px;
            }
            .hero-stat-number {
                font-size: 22px;
            }
            .section {
                padding: 52px 0;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .entry-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .entry-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .notice-grid {
                grid-template-columns: 1fr;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .hero-stats-row {
                flex-direction: column;
                gap: 16px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
        }

        /* ===== Scrollbar ===== */
        .sidebar::-webkit-scrollbar {
            width: 4px;
        }
        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }
        .sidebar::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 4px;
        }
        .sidebar::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.25);
        }

        /* ===== Fade In ===== */
        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in-delay-1 {
            animation-delay: 0.1s;
        }
        .fade-in-delay-2 {
            animation-delay: 0.2s;
        }
        .fade-in-delay-3 {
            animation-delay: 0.3s;
        }

/* roulang page: article */
:root {
    --primary: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --primary-bg: #eff6ff;
    --secondary: #7c3aed;
    --secondary-light: #8b5cf6;
    --accent: #f59e0b;
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --bg-sidebar: #0f172a;
    --bg-sidebar-hover: #1e293b;
    --text: #1e293b;
    --text-light: #64748b;
    --text-inverse: #f1f5f9;
    --text-sidebar: #94a3b8;
    --text-sidebar-active: #ffffff;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.1);
    --shadow-sidebar: 2px 0 20px rgba(0,0,0,0.08);
    --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    --max-width: 1200px;
    --sidebar-width: 260px;
    --header-height: 0px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); font-size: 16px; line-height: 1.6; color: var(--text); background: var(--bg); display: flex; min-height: 100vh; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
button, input, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }
p { margin-bottom: 1rem; color: var(--text-light); }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

.sidebar {
    position: fixed; top: 0; left: 0; width: var(--sidebar-width); height: 100vh;
    background: var(--bg-sidebar); z-index: 1000;
    display: flex; flex-direction: column; padding: 28px 20px;
    box-shadow: var(--shadow-sidebar); overflow-y: auto;
}
.sidebar-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 36px; padding: 0 8px; }
.sidebar-logo .logo-icon {
    width: 42px; height: 42px; background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 20px; font-weight: 800; flex-shrink: 0;
}
.sidebar-logo .logo-text { font-size: 1.2rem; font-weight: 700; color: var(--text-inverse); line-height: 1.2; }
.sidebar-logo .logo-text span { color: var(--primary-light); }
.nav-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1.2px; color: var(--text-sidebar); margin: 20px 0 10px 8px; font-weight: 600; }
.nav-item {
    display: flex; align-items: center; gap: 12px; padding: 12px 16px;
    border-radius: var(--radius-sm); color: var(--text-sidebar); font-size: 0.95rem; font-weight: 500;
    transition: all var(--transition); margin-bottom: 2px;
}
.nav-item i { width: 20px; text-align: center; font-size: 1rem; }
.nav-item:hover { background: var(--bg-sidebar-hover); color: var(--text-inverse); }
.nav-item.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(37,99,235,0.35); }
.nav-item.cta-btn { background: rgba(37,99,235,0.15); color: var(--primary-light); border: 1px solid rgba(37,99,235,0.2); margin-top: 8px; }
.nav-item.cta-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.mobile-toggle { display: none; position: fixed; top: 16px; right: 16px; z-index: 1100;
    width: 44px; height: 44px; background: var(--bg-card); border: none; border-radius: var(--radius-sm);
    box-shadow: var(--shadow); cursor: pointer; align-items: center; justify-content: center;
    font-size: 1.25rem; color: var(--text); transition: all var(--transition);
}
.mobile-toggle:hover { background: var(--primary-bg); color: var(--primary); }
.sidebar-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.4); z-index: 999; }

.main-content { margin-left: var(--sidebar-width); flex: 1; min-height: 100vh; display: flex; flex-direction: column; }

.article-banner {
    position: relative; padding: 80px 0 60px; background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    overflow: hidden; min-height: 320px; display: flex; align-items: center;
}
.article-banner::before {
    content: ''; position: absolute; inset: 0;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity: 0.15; z-index: 0;
}
.article-banner::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(30,41,59,0.7) 100%);
    z-index: 1;
}
.article-banner .container { position: relative; z-index: 2; }
.article-breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-sidebar); margin-bottom: 20px; flex-wrap: wrap; }
.article-breadcrumb a { color: var(--text-sidebar); }
.article-breadcrumb a:hover { color: var(--primary-light); }
.article-breadcrumb .sep { color: #475569; }
.article-breadcrumb .current { color: var(--text-inverse); }
.article-banner .article-category {
    display: inline-block; padding: 6px 16px; background: rgba(37,99,235,0.2);
    border: 1px solid rgba(37,99,235,0.3); border-radius: 20px;
    font-size: 0.8rem; color: var(--primary-light); font-weight: 500; margin-bottom: 16px;
}
.article-banner h1 { font-size: 2.5rem; color: var(--text-inverse); max-width: 800px; line-height: 1.25; margin-bottom: 16px; }
.article-banner .article-meta { display: flex; align-items: center; gap: 24px; color: var(--text-sidebar); font-size: 0.9rem; flex-wrap: wrap; }
.article-banner .article-meta i { margin-right: 6px; }

.article-body { flex: 1; padding: 48px 0 60px; }
.article-body .container { max-width: 860px; }
.article-content {
    background: var(--bg-card); border-radius: var(--radius-lg); padding: 48px;
    box-shadow: var(--shadow); border: 1px solid var(--border);
}
.article-content .featured-image { margin: -48px -48px 32px; border-radius: var(--radius-lg) var(--radius-lg) 0 0; overflow: hidden; max-height: 480px; }
.article-content .featured-image img { width: 100%; height: 100%; object-fit: cover; border-radius: 0; }
.article-content .post-body { font-size: 1.05rem; line-height: 1.85; color: var(--text); }
.article-content .post-body p { margin-bottom: 1.25rem; color: #334155; }
.article-content .post-body h2, .article-content .post-body h3 { margin-top: 2rem; margin-bottom: 0.75rem; color: var(--text); }
.article-content .post-body h2 { font-size: 1.5rem; }
.article-content .post-body h3 { font-size: 1.25rem; }
.article-content .post-body ul, .article-content .post-body ol { margin: 1rem 0 1.25rem 1.5rem; color: #334155; }
.article-content .post-body li { margin-bottom: 0.5rem; list-style: disc; }
.article-content .post-body ol li { list-style: decimal; }
.article-content .post-body blockquote {
    border-left: 4px solid var(--primary); background: var(--primary-bg); padding: 16px 24px;
    margin: 1.5rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: #334155;
}
.article-content .post-body a { color: var(--primary); text-decoration: underline; }
.article-content .post-body img { border-radius: var(--radius-sm); margin: 1.5rem 0; }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); }
.article-tags .tag {
    padding: 6px 16px; background: var(--primary-bg); border: 1px solid var(--border);
    border-radius: 20px; font-size: 0.8rem; color: var(--primary); font-weight: 500; transition: all var(--transition);
}
.article-tags .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

.article-nav { display: flex; justify-content: space-between; gap: 24px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); }
.article-nav a {
    flex: 1; padding: 16px 20px; background: var(--bg); border-radius: var(--radius-sm);
    border: 1px solid var(--border); transition: all var(--transition);
    display: flex; flex-direction: column; gap: 4px;
}
.article-nav a:hover { background: var(--primary-bg); border-color: var(--primary); box-shadow: var(--shadow); }
.article-nav .nav-label { font-size: 0.75rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.5px; margin: 0; }
.article-nav .nav-title { font-size: 0.95rem; font-weight: 600; color: var(--text); }
.article-nav a:hover .nav-title { color: var(--primary); }
.article-nav .nav-next { text-align: right; }

.related-section { padding: 60px 0; background: var(--bg); }
.related-section .section-title { text-align: center; margin-bottom: 40px; }
.related-section .section-title h2 { font-size: 1.75rem; margin-bottom: 8px; }
.related-section .section-title p { color: var(--text-light); font-size: 1rem; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
    background: var(--bg-card); border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--border); box-shadow: var(--shadow);
    transition: all var(--transition);
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.related-card .card-img { height: 180px; overflow: hidden; }
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body { padding: 20px; }
.related-card .card-body .card-cat { font-size: 0.75rem; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.related-card .card-body h3 { font-size: 1.05rem; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .card-body h3 a { color: var(--text); }
.related-card .card-body h3 a:hover { color: var(--primary); }
.related-card .card-body .card-meta { font-size: 0.8rem; color: var(--text-light); display: flex; gap: 16px; }

.article-cta {
    padding: 60px 0; background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    text-align: center; position: relative; overflow: hidden;
}
.article-cta::before {
    content: ''; position: absolute; inset: 0;
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity: 0.08; z-index: 0;
}
.article-cta .container { position: relative; z-index: 1; }
.article-cta h2 { font-size: 2rem; color: #fff; margin-bottom: 12px; }
.article-cta p { color: rgba(255,255,255,0.85); font-size: 1.1rem; margin-bottom: 28px; max-width: 600px; margin-left: auto; margin-right: auto; }
.article-cta .cta-group { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.article-cta .btn-primary {
    display: inline-flex; align-items: center; gap: 10px; padding: 16px 36px;
    background: #fff; color: var(--primary); border: none; border-radius: var(--radius-sm);
    font-size: 1.05rem; font-weight: 700; cursor: pointer; transition: all var(--transition);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.article-cta .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,0.2); color: var(--primary-dark); }
.article-cta .btn-secondary {
    display: inline-flex; align-items: center; gap: 10px; padding: 16px 36px;
    background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.4); border-radius: var(--radius-sm);
    font-size: 1.05rem; font-weight: 600; cursor: pointer; transition: all var(--transition);
}
.article-cta .btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.7); }

.article-share { padding: 32px 0; background: var(--bg-card); border-bottom: 1px solid var(--border); }
.article-share .container { max-width: 860px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.article-share .share-label { font-size: 0.9rem; color: var(--text-light); font-weight: 500; }
.article-share .share-btns { display: flex; gap: 10px; }
.article-share .share-btn {
    width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center; color: var(--text-light);
    font-size: 1rem; transition: all var(--transition); background: var(--bg);
}
.article-share .share-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

.footer {
    background: var(--bg-sidebar); color: var(--text-sidebar); padding: 48px 0 0;
    margin-top: auto;
}
.footer .container { max-width: var(--max-width); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 32px; border-bottom: 1px solid rgba(148,163,184,0.15); }
.footer-brand .footer-logo { font-size: 1.3rem; font-weight: 700; color: var(--text-inverse); margin-bottom: 12px; }
.footer-brand .footer-logo span { color: var(--primary-light); }
.footer-brand p { font-size: 0.9rem; color: var(--text-sidebar); line-height: 1.7; max-width: 360px; }
.footer-col h4 { font-size: 0.95rem; color: var(--text-inverse); margin-bottom: 16px; font-weight: 600; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--text-sidebar); font-size: 0.88rem; transition: color var(--transition); display: flex; align-items: center; gap: 8px; }
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; font-size: 0.82rem; color: var(--text-sidebar); flex-wrap: wrap; gap: 12px; }
.footer-bottom a { color: var(--text-sidebar); }
.footer-bottom a:hover { color: var(--primary-light); }

.not-found { text-align: center; padding: 80px 0; }
.not-found .nf-icon { font-size: 4rem; color: var(--text-light); margin-bottom: 16px; }
.not-found h2 { font-size: 1.75rem; margin-bottom: 12px; }
.not-found p { color: var(--text-light); margin-bottom: 24px; }
.not-found .btn-home { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); font-weight: 600; transition: all var(--transition); }
.not-found .btn-home:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(37,99,235,0.3); }

@media (max-width: 1024px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); transition: transform var(--transition); }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay.open { display: block; }
    .mobile-toggle { display: flex; }
    .main-content { margin-left: 0; }
    .article-banner { padding: 60px 0 40px; min-height: 240px; }
    .article-banner h1 { font-size: 1.6rem; }
    .article-content { padding: 24px; }
    .article-content .featured-image { margin: -24px -24px 20px; max-height: 240px; }
    .article-nav { flex-direction: column; }
    .article-nav .nav-next { text-align: left; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .article-cta h2 { font-size: 1.5rem; }
    .article-cta .cta-group { flex-direction: column; align-items: center; }
    .article-share .container { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
    .article-banner h1 { font-size: 1.35rem; }
    .article-content { padding: 16px; }
    .article-content .featured-image { margin: -16px -16px 16px; max-height: 180px; }
    .article-banner .article-meta { gap: 12px; font-size: 0.8rem; flex-direction: column; align-items: flex-start; }
    .article-tags { gap: 8px; }
    .article-tags .tag { font-size: 0.75rem; padding: 4px 12px; }
    .related-card .card-img { height: 140px; }
    .article-cta h2 { font-size: 1.25rem; }
    .article-cta p { font-size: 0.95rem; }
    .article-cta .btn-primary, .article-cta .btn-secondary { width: 100%; justify-content: center; }
}