/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9b;
            --primary-dark: #0f2444;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-body: #f7f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-card: #ffffff;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-muted: #8a9aaa;
            --text-white: #f0f4f8;
            --border-light: #e2e8f0;
            --border-muted: #d0d8e4;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-h: 70px;
            --nav-h: 52px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 0.75rem; color: var(--text-secondary); }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== 辅助类 ===== */
        .section-padding { padding: 80px 0; }
        @media (max-width: 768px) { .section-padding { padding: 48px 0; } }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p {
            max-width: 640px;
            margin: 0 auto;
            color: var(--text-muted);
            font-size: 1.05rem;
        }
        .text-center { text-align: center; }
        .text-accent { color: var(--accent); }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        @media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 768px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; } }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--accent);
            color: #1a1a1a;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #1a1a1a;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232,168,56,0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255,255,255,0.5);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.12);
            border-color: var(--text-white);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-white {
            background: var(--bg-white);
            color: var(--primary);
            border-color: var(--bg-white);
        }
        .btn-white:hover {
            background: var(--accent);
            color: #1a1a1a;
            border-color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,255,255,0.25);
        }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 40px; font-size: 1.1rem; border-radius: var(--radius-md); }

        /* ===== Badge ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: var(--accent);
            color: #1a1a1a;
        }
        .badge-primary {
            background: var(--primary-light);
            color: var(--text-white);
        }
        .badge-muted {
            background: var(--border-light);
            color: var(--text-muted);
        }

        /* ===== 导航 Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(15, 26, 46, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(15, 26, 46, 0.98);
            box-shadow: 0 4px 24px rgba(0,0,0,0.3);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .header-top .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .header-top .logo i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .header-top .logo span { color: var(--accent); }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-actions .search-toggle {
            color: rgba(255,255,255,0.7);
            font-size: 1.2rem;
            padding: 8px;
            border-radius: 50%;
            transition: var(--transition);
        }
        .header-actions .search-toggle:hover {
            color: var(--accent);
            background: rgba(255,255,255,0.08);
        }
        .header-actions .btn-cta {
            background: var(--accent);
            color: #1a1a1a;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .header-actions .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(232,168,56,0.3);
        }
        .nav-bar {
            background: rgba(0,0,0,0.2);
            border-top: 1px solid rgba(255,255,255,0.04);
            height: var(--nav-h);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-bar::-webkit-scrollbar { display: none; }
        .nav-inner {
            display: flex;
            align-items: center;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            gap: 4px;
        }
        .nav-inner a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: rgba(255,255,255,0.7);
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-inner a i { font-size: 0.8rem; }
        .nav-inner a:hover {
            color: var(--text-white);
            background: rgba(255,255,255,0.08);
        }
        .nav-inner a.active {
            color: #1a1a1a;
            background: var(--accent);
            border-color: var(--accent);
            font-weight: 700;
        }
        .nav-inner a.active i { color: #1a1a1a; }
        .mobile-menu-toggle {
            display: none;
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 8px;
            background: none;
        }
        @media (max-width: 768px) {
            .mobile-menu-toggle { display: block; }
            .header-actions .btn-cta { display: none; }
            .nav-bar { display: none; }
            .nav-bar.open { display: block; position: fixed; top: var(--header-h); left: 0; width: 100%; background: rgba(15,26,46,0.98); height: auto; padding: 12px 0; border-top: 1px solid rgba(255,255,255,0.06); }
            .nav-inner { flex-wrap: wrap; gap: 8px; padding: 0 16px; }
            .nav-inner a { flex: 0 0 auto; }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 140px 0 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.45;
            transform: scale(1.02);
            transition: transform 12s ease;
        }
        .hero:hover .hero-bg { transform: scale(1.06); }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,46,0.92) 0%, rgba(15,26,46,0.6) 50%, rgba(15,26,46,0.88) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 0 24px;
        }
        .hero-content .badge-hero {
            display: inline-block;
            padding: 6px 22px;
            border-radius: 50px;
            background: rgba(232,168,56,0.18);
            color: var(--accent);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            border: 1px solid rgba(232,168,56,0.25);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-content h1 {
            color: var(--text-white);
            font-weight: 800;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 span { color: var(--accent); }
        .hero-content p {
            color: rgba(255,255,255,0.75);
            font-size: 1.15rem;
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 56px;
            flex-wrap: wrap;
        }
        .hero-stats .stat-item { text-align: center; }
        .hero-stats .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .hero-stats .stat-item .label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero { min-height: 60vh; padding: 120px 0 48px; }
            .hero-stats { gap: 24px; }
            .hero-stats .stat-item .num { font-size: 1.5rem; }
        }

        /* ===== 板块通用 ===== */
        .section-light { background: var(--bg-white); }
        .section-alt { background: var(--bg-body); }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2, .section-dark h3, .section-dark h4 { color: var(--text-white); }
        .section-dark p { color: rgba(255,255,255,0.7); }
        .section-with-bg {
            position: relative;
            background: var(--bg-dark);
        }
        .section-with-bg .section-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
        }
        .section-with-bg .container { position: relative; z-index: 2; }

        /* ===== 核心说明 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-grid .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .intro-grid .intro-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            transition: var(--transition);
        }
        .intro-grid .intro-image:hover img { transform: scale(1.03); }
        .intro-grid .intro-text h2 { margin-bottom: 16px; }
        .intro-grid .intro-text p { margin-bottom: 16px; font-size: 1.02rem; }
        .intro-grid .intro-text .feature-list { margin-top: 20px; }
        .intro-grid .intro-text .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .intro-grid .intro-text .feature-list li i { color: var(--accent); font-size: 1rem; width: 20px; }
        @media (max-width: 768px) {
            .intro-grid { grid-template-columns: 1fr; gap: 28px; }
            .intro-grid .intro-image img { height: 240px; }
        }

        /* ===== 分类入口 ===== */
        .category-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .category-card .icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
        }
        .category-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .category-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 16px; }
        .category-card .badge { font-size: 0.72rem; }
        @media (max-width: 1024px) { .category-cards { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 768px) { .category-cards { grid-template-columns: 1fr; } }

        /* ===== 内容卡片列表 ===== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .content-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .content-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .content-card:hover .card-img { transform: scale(1.03); }
        .content-card .card-body { padding: 20px; }
        .content-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .content-card .card-body .card-meta i { margin-right: 4px; }
        .content-card .card-body h3 { font-size: 1.05rem; margin-bottom: 8px; }
        .content-card .card-body h3 a { color: var(--text-primary); }
        .content-card .card-body h3 a:hover { color: var(--accent); }
        .content-card .card-body p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .content-card .card-body .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .content-card .card-body .card-footer .tag {
            font-size: 0.75rem;
            padding: 2px 12px;
            border-radius: 50px;
            background: var(--border-light);
            color: var(--text-muted);
        }
        .content-card .card-body .card-footer a {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-light);
        }
        .content-card .card-body .card-footer a:hover { color: var(--accent); }
        @media (max-width: 1024px) { .content-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 768px) { .content-grid { grid-template-columns: 1fr; } }

        /* ===== 数据 / 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .step-card:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--accent);
            transform: translateY(-4px);
        }
        .step-card .step-num {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--accent);
            color: #1a1a1a;
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-card h4 { color: var(--text-white); font-size: 1.05rem; margin-bottom: 8px; }
        .step-card p { color: rgba(255,255,255,0.6); font-size: 0.88rem; }
        @media (max-width: 1024px) { .steps-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 768px) { .steps-grid { grid-template-columns: 1fr; } }

        /* ===== FAQ ===== */
        .faq-list { max-width: 760px; margin: 0 auto; }
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 18px 0;
        }
        .faq-item:first-child { padding-top: 0; }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--text-primary);
            padding: 4px 0;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--accent); }
        .faq-question i { font-size: 1.1rem; color: var(--accent); transition: var(--transition); }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 12px 0 0;
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.7;
        }
        .faq-answer.open { max-height: 300px; padding-top: 12px; }
        .faq-answer p { margin-bottom: 0; }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-xl);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(232,168,56,0.08);
        }
        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(232,168,56,0.05);
        }
        .cta-box h2 { color: var(--text-white); margin-bottom: 12px; }
        .cta-box p { color: rgba(255,255,255,0.75); max-width: 520px; margin: 0 auto 28px; font-size: 1.05rem; }
        .cta-box .btn { position: relative; z-index: 2; }
        @media (max-width: 768px) { .cta-box { padding: 40px 24px; border-radius: var(--radius-lg); } }

        /* ===== 最新信息列表 (CMS) ===== */
        .cms-list { margin-top: 8px; }
        .cms-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .cms-item:last-child { border-bottom: none; }
        .cms-item .cms-img {
            width: 100px;
            height: 70px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--border-light);
        }
        .cms-item .cms-info { flex: 1; }
        .cms-item .cms-info h4 { font-size: 0.98rem; margin-bottom: 4px; }
        .cms-item .cms-info h4 a { color: var(--text-primary); }
        .cms-item .cms-info h4 a:hover { color: var(--accent); }
        .cms-item .cms-info .cms-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .cms-item .cms-info .cms-meta i { margin-right: 4px; }
        @media (max-width: 520px) {
            .cms-item { flex-wrap: wrap; }
            .cms-item .cms-img { width: 80px; height: 56px; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-grid .footer-brand .logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-grid .footer-brand .logo i { color: var(--accent); }
        .footer-grid .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.5); max-width: 320px; }
        .footer-grid h4 {
            color: var(--text-white);
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-grid ul li { margin-bottom: 10px; }
        .footer-grid ul li a {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.55);
            transition: var(--transition);
        }
        .footer-grid ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }
        @media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== 移动端汉堡菜单 ===== */
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 998;
        }
        .mobile-menu-overlay.open { display: block; }
        @media (max-width: 768px) {
            .mobile-menu-toggle { display: block; }
            .nav-bar { display: none; }
            .nav-bar.open { display: block; }
        }
        @media (min-width: 769px) {
            .mobile-menu-toggle { display: none !important; }
            .nav-bar { display: block !important; }
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #3a5a9e;
            --primary-dark: #0f1a4a;
            --secondary: #e8491d;
            --secondary-light: #f06a3e;
            --accent: #f5a623;
            --accent-light: #ffc857;
            --bg-body: #f8f9fc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f1a4a;
            --bg-soft: #eef1f8;
            --text-primary: #1a1a2e;
            --text-body: #2d2d44;
            --text-muted: #6b7280;
            --text-light: #9ca3af;
            --text-white: #ffffff;
            --border-color: #e5e7eb;
            --border-light: #f0f0f5;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 48px rgba(0,0,0,0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-height: 120px;
            --nav-height: 48px;
        }

        /* ========== 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: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--secondary); }
        a:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; border-radius: 4px; }
        button { font-family: inherit; cursor: pointer; border: none; background: none; font-size: inherit; }
        button:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; border-radius: 6px; }
        input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-primary); line-height: 1.3; font-weight: 700; }
        h1 { font-size: 2.6rem; letter-spacing: -0.02em; }
        h2 { font-size: 2.0rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1em; }
        ::selection { background: var(--primary); color: #fff; }

        /* ========== 容器 ========== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            padding: 10px 24px; border-radius: var(--radius-sm); font-weight: 600;
            font-size: 0.95rem; transition: all var(--transition); border: 2px solid transparent;
            text-align: center; white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary); color: #fff; border-color: var(--primary);
        }
        .btn-primary:hover { background: var(--primary-light); border-color: var(--primary-light); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .btn-secondary {
            background: var(--secondary); color: #fff; border-color: var(--secondary);
        }
        .btn-secondary:hover { background: var(--secondary-light); border-color: var(--secondary-light); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .btn-outline {
            background: transparent; color: var(--primary); border-color: var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-sm); }
        .btn-ghost {
            background: rgba(255,255,255,0.12); color: #fff; border-color: rgba(255,255,255,0.25);
        }
        .btn-ghost:hover { background: rgba(255,255,255,0.25); color: #fff; transform: translateY(-1px); }
        .btn-lg { padding: 14px 36px; font-size: 1.05rem; border-radius: var(--radius-md); }
        .btn-sm { padding: 6px 16px; font-size: 0.85rem; border-radius: 6px; }
        .btn i { font-size: 0.9em; }

        /* ========== 徽章 / 标签 ========== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 100px;
            font-size: 0.78rem; font-weight: 600; letter-spacing: 0.3px;
            background: var(--bg-soft); color: var(--primary);
        }
        .badge-hot { background: #fef2e8; color: #c2410c; }
        .badge-new { background: #e0f2fe; color: #0369a1; }
        .badge-top { background: #fef9c3; color: #a16207; }
        .tag {
            display: inline-block; padding: 5px 16px; border-radius: 100px;
            font-size: 0.82rem; font-weight: 500; background: var(--bg-white);
            color: var(--text-muted); border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

        /* ========== 卡片 ========== */
        .card {
            background: var(--bg-card); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-light);
            transition: all var(--transition); overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .card-img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; display: block; }
        .card-body { padding: 20px; }
        .card-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); line-height: 1.4; }
        .card-text { font-size: 0.92rem; color: var(--text-muted); line-height: 1.6; }
        .card-meta { display: flex; align-items: center; gap: 12px; font-size: 0.82rem; color: var(--text-light); margin-top: 12px; }

        /* ========== Header & 导航 ========== */
        .site-header {
            position: sticky; top: 0; z-index: 100;
            background: rgba(255,255,255,0.96); backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .header-top {
            display: flex; align-items: center; justify-content: space-between;
            padding: 12px 24px; max-width: var(--container-max); margin: 0 auto;
        }
        .logo {
            display: flex; align-items: center; gap: 8px;
            font-size: 1.5rem; font-weight: 800; color: var(--primary); letter-spacing: -0.3px;
        }
        .logo i { color: var(--secondary); font-size: 1.3em; }
        .logo span { color: var(--secondary); font-weight: 700; }
        .logo:hover { color: var(--primary); }

        .header-actions { display: flex; align-items: center; gap: 12px; }
        .search-toggle { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 1.1rem; transition: background var(--transition); }
        .search-toggle:hover { background: var(--bg-soft); color: var(--primary); }
        .btn-cta {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 8px 18px; border-radius: 100px; font-weight: 600; font-size: 0.88rem;
            background: var(--secondary); color: #fff; transition: all var(--transition);
        }
        .btn-cta:hover { background: var(--secondary-light); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }

        .mobile-menu-toggle { display: none; width: 40px; height: 40px; border-radius: 50%; align-items: center; justify-content: center; color: var(--text-primary); font-size: 1.3rem; background: var(--bg-soft); }

        .nav-bar {
            border-top: 1px solid var(--border-light); background: var(--bg-white);
            overflow-x: auto; -webkit-overflow-scrolling: touch;
        }
        .nav-bar::-webkit-scrollbar { height: 0; }
        .nav-inner {
            display: flex; gap: 4px; padding: 6px 24px; max-width: var(--container-max); margin: 0 auto;
            min-width: max-content;
        }
        .nav-inner a {
            display: flex; align-items: center; gap: 6px;
            padding: 6px 16px; border-radius: 100px; font-size: 0.88rem; font-weight: 500;
            color: var(--text-muted); white-space: nowrap; transition: all var(--transition);
        }
        .nav-inner a i { font-size: 0.85em; }
        .nav-inner a:hover { background: var(--bg-soft); color: var(--primary); }
        .nav-inner a.active { background: var(--primary); color: #fff; font-weight: 600; box-shadow: var(--shadow-sm); }
        .nav-inner a.active i { color: #fff; }

        @media (max-width: 768px) {
            .header-top { padding: 10px 16px; }
            .logo { font-size: 1.25rem; }
            .btn-cta { display: none; }
            .mobile-menu-toggle { display: flex; }
            .nav-inner { padding: 6px 16px; gap: 2px; }
            .nav-inner a { padding: 6px 12px; font-size: 0.82rem; }
            .nav-inner a i { display: none; }
        }
        @media (max-width: 520px) {
            .logo { font-size: 1.1rem; }
            .nav-inner a { padding: 5px 10px; font-size: 0.75rem; }
        }

        /* ========== Hero / Banner ========== */
        .page-hero {
            position: relative; min-height: 320px; display: flex; align-items: center;
            background: var(--bg-dark); overflow: hidden;
        }
        .page-hero-bg {
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.45; transform: scale(1.02);
        }
        .page-hero-overlay {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,26,74,0.85) 0%, rgba(26,42,108,0.70) 50%, rgba(232,73,29,0.25) 100%);
        }
        .page-hero .container { position: relative; z-index: 2; padding-top: 48px; padding-bottom: 48px; }
        .page-hero h1 { color: #fff; font-size: 2.8rem; font-weight: 800; margin-bottom: 12px; }
        .page-hero p { color: rgba(255,255,255,0.85); font-size: 1.15rem; max-width: 600px; margin-bottom: 24px; line-height: 1.6; }
        .page-hero-meta { display: flex; flex-wrap: wrap; gap: 20px; color: rgba(255,255,255,0.6); font-size: 0.92rem; }
        .page-hero-meta i { margin-right: 6px; }
        @media (max-width: 768px) {
            .page-hero { min-height: 240px; }
            .page-hero h1 { font-size: 2.0rem; }
            .page-hero p { font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .page-hero h1 { font-size: 1.6rem; }
            .page-hero p { font-size: 0.92rem; }
        }

        /* ========== 板块通用 ========== */
        .section { padding: 72px 0; }
        .section-alt { background: var(--bg-white); }
        .section-soft { background: var(--bg-soft); }
        .section-dark { background: var(--bg-dark); color: #fff; }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-header h2 { margin-bottom: 12px; }
        .section-header p { color: var(--text-muted); max-width: 620px; margin: 0 auto; font-size: 1.05rem; }
        .section-header.light p { color: rgba(255,255,255,0.7); }
        .section-divider { width: 60px; height: 4px; background: var(--secondary); border-radius: 4px; margin: 16px auto 20px; }
        @media (max-width: 768px) { .section { padding: 48px 0; } .section-header { margin-bottom: 32px; } }

        /* ========== 分类简介 ========== */
        .intro-grid {
            display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
        }
        .intro-content h2 { margin-bottom: 16px; }
        .intro-content p { color: var(--text-muted); font-size: 1.02rem; line-height: 1.8; }
        .intro-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
        .stat-item { text-align: center; padding: 16px 8px; background: var(--bg-soft); border-radius: var(--radius-sm); }
        .stat-item .num { font-size: 1.8rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .stat-item .label { font-size: 0.82rem; color: var(--text-muted); margin-top: 4px; }
        .intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
        .intro-image img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }
        @media (max-width: 768px) { .intro-grid { grid-template-columns: 1fr; gap: 32px; } .intro-stats { grid-template-columns: repeat(3, 1fr); } }
        @media (max-width: 520px) { .intro-stats { grid-template-columns: 1fr 1fr; } }

        /* ========== 最新资讯卡片网格 ========== */
        .card-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
        }
        .card-article .card-img { aspect-ratio: 16 / 10; }
        .card-article .badge { margin-bottom: 8px; }
        .card-article .card-title { font-size: 1.05rem; }
        .card-article .card-text { font-size: 0.88rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        @media (max-width: 992px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 600px) { .card-grid { grid-template-columns: 1fr; gap: 16px; } }

        /* ========== 热门标签 ========== */
        .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; max-width: 700px; margin: 0 auto; }
        .tag-cloud .tag { font-size: 0.88rem; padding: 8px 22px; }

        /* ========== 特色栏目 ========== */
        .feature-grid {
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
        }
        .feature-card {
            display: flex; gap: 20px; align-items: flex-start;
            background: var(--bg-white); padding: 24px; border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .feature-icon { flex-shrink: 0; width: 52px; height: 52px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; color: #fff; background: var(--primary); }
        .feature-card:nth-child(2) .feature-icon { background: var(--secondary); }
        .feature-card:nth-child(3) .feature-icon { background: var(--accent); }
        .feature-card:nth-child(4) .feature-icon { background: #0e7490; }
        .feature-body h4 { margin-bottom: 6px; }
        .feature-body p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }
        @media (max-width: 768px) { .feature-grid { grid-template-columns: 1fr; } }
        @media (max-width: 520px) { .feature-card { flex-direction: column; } }

        /* ========== 数据统计 ========== */
        .stats-row {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center;
        }
        .stats-item { padding: 32px 16px; background: rgba(255,255,255,0.06); border-radius: var(--radius-md); border: 1px solid rgba(255,255,255,0.08); backdrop-filter: blur(6px); }
        .stats-item .num { font-size: 2.8rem; font-weight: 800; color: var(--accent-light); line-height: 1.2; }
        .stats-item .label { font-size: 0.95rem; color: rgba(255,255,255,0.7); margin-top: 6px; }
        .stats-item i { font-size: 1.8rem; color: rgba(255,255,255,0.2); margin-bottom: 12px; }
        @media (max-width: 768px) { .stats-row { grid-template-columns: repeat(2, 1fr); gap: 16px; } .stats-item .num { font-size: 2.2rem; } }
        @media (max-width: 520px) { .stats-row { grid-template-columns: 1fr 1fr; } }

        /* ========== FAQ ========== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--bg-white); border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; transition: all var(--transition); }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; font-size: 1.02rem; font-weight: 600; color: var(--text-primary); text-align: left; background: none; transition: background var(--transition); }
        .faq-question:hover { background: var(--bg-soft); }
        .faq-question i { font-size: 0.85rem; color: var(--text-light); transition: transform var(--transition); }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer { padding: 0 22px 18px; font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; display: none; }
        .faq-item.open .faq-answer { display: block; }

        /* ========== CTA ========== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg); padding: 56px 48px; text-align: center;
            box-shadow: var(--shadow-xl); position: relative; overflow: hidden;
        }
        .cta-box::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.08; }
        .cta-box h2 { color: #fff; font-size: 2.0rem; margin-bottom: 12px; position: relative; }
        .cta-box p { color: rgba(255,255,255,0.8); font-size: 1.05rem; max-width: 560px; margin: 0 auto 28px; position: relative; }
        .cta-box .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }
        @media (max-width: 768px) { .cta-box { padding: 36px 24px; } .cta-box h2 { font-size: 1.5rem; } }
        @media (max-width: 520px) { .cta-box .btn-group { flex-direction: column; align-items: center; } }

        /* ========== 分页 ========== */
        .pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; flex-wrap: wrap; }
        .pagination a, .pagination span {
            display: flex; align-items: center; justify-content: center;
            width: 42px; height: 42px; border-radius: var(--radius-sm);
            font-size: 0.92rem; font-weight: 600; background: var(--bg-white);
            color: var(--text-body); border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .pagination a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }
        .pagination .disabled { opacity: 0.4; pointer-events: none; }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 48px 0 0;
        }
        .site-footer .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,0.08); }
        .footer-brand .logo { color: #fff; font-size: 1.3rem; margin-bottom: 12px; }
        .footer-brand .logo i { color: var(--secondary); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); line-height: 1.7; max-width: 320px; }
        .site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 700; }
        .site-footer ul li { margin-bottom: 10px; }
        .site-footer ul li a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: all var(--transition); display: inline-flex; align-items: center; gap: 6px; }
        .site-footer ul li a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom { padding: 20px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.35); }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: #fff; }
        @media (max-width: 992px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
        @media (max-width: 600px) { .footer-grid { grid-template-columns: 1fr; gap: 24px; } .footer-bottom { flex-direction: column; text-align: center; } }
        @media (max-width: 520px) { .site-footer .container { padding: 0 16px; } }

        /* ========== 响应式微调 ========== */
        @media (max-width: 768px) {
            h1 { font-size: 2.0rem; }
            h2 { font-size: 1.6rem; }
            h3 { font-size: 1.2rem; }
        }
        @media (max-width: 520px) {
            h1 { font-size: 1.6rem; }
            h2 { font-size: 1.35rem; }
            body { font-size: 15px; }
        }

        /* ========== 滚动渐入动画 ========== */
        .fade-up { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .fade-up.visible { opacity: 1; transform: translateY(0); }

        /* ========== 工具类 ========== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mt-40 { margin-top: 40px; }
        .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: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0b0e1a;
            --primary-light: #1a2744;
            --secondary: #f0b90b;
            --secondary-hover: #d4a309;
            --accent: #e94560;
            --accent-hover: #d63850;
            --bg-body: #f4f6fa;
            --bg-card: #ffffff;
            --bg-dark: #0b0e1a;
            --bg-dark-alt: #131a2e;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #7a7a9a;
            --text-light: #f0f0f5;
            --text-light-muted: rgba(255, 255, 255, 0.6);
            --border-color: #e2e6ef;
            --border-light: rgba(255, 255, 255, 0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 30px rgba(240, 185, 11, 0.15);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-top-height: 64px;
            --nav-height: 52px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; outline: none; }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--primary);
            border-bottom: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-top-height);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }
        .logo i { color: var(--secondary); font-size: 1.4rem; }
        .logo span { color: var(--secondary); font-weight: 300; }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-toggle {
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .search-toggle:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--secondary);
            color: var(--primary);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .btn-cta:hover {
            background: var(--secondary-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .mobile-menu-toggle {
            display: none;
            color: #fff;
            font-size: 1.3rem;
            padding: 8px;
        }
        @media (max-width: 768px) {
            .btn-cta { display: none; }
            .mobile-menu-toggle { display: block; }
        }

        /* ===== Nav Bar ===== */
        .nav-bar {
            background: rgba(255,255,255,0.03);
            border-top: 1px solid var(--border-light);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-bar::-webkit-scrollbar { display: none; }
        .nav-inner {
            display: flex;
            gap: 4px;
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
            height: var(--nav-height);
            align-items: center;
        }
        .nav-inner a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.88rem;
            font-weight: 500;
            color: rgba(255,255,255,0.7);
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-inner a i { font-size: 0.8rem; opacity: 0.7; }
        .nav-inner a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-inner a.active { color: var(--primary); background: var(--secondary); font-weight: 600; }
        .nav-inner a.active i { opacity: 1; }
        @media (max-width: 768px) {
            .nav-inner { padding: 0 16px; gap: 2px; }
            .nav-inner a { padding: 6px 14px; font-size: 0.82rem; }
        }

        /* ===== Mobile Menu ===== */
        .mobile-menu {
            display: none;
            background: var(--bg-dark-alt);
            padding: 16px 24px;
            border-top: 1px solid var(--border-light);
        }
        .mobile-menu.open { display: block; }
        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 0;
            color: rgba(255,255,255,0.7);
            font-size: 1rem;
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-menu a:last-child { border-bottom: none; }
        .mobile-menu a:hover { color: #fff; }
        .mobile-menu a.active { color: var(--secondary); }
        @media (min-width: 769px) {
            .mobile-menu { display: none !important; }
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .article-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.35;
            filter: brightness(0.6);
        }
        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,14,26,0.85) 0%, rgba(19,26,46,0.7) 100%);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 24px;
        }
        .article-category-badge {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            max-width: 800px;
            margin: 0 auto 16px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--text-light-muted);
            font-size: 0.92rem;
        }
        .article-meta i { margin-right: 6px; color: var(--secondary); }
        @media (max-width: 768px) {
            .article-hero { min-height: 260px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-hero .container { padding: 40px 16px; }
            .article-meta { gap: 12px; font-size: 0.82rem; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.4rem; }
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 48px 0;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .article-layout { grid-template-columns: 1fr; }
        }

        /* ===== Article Content ===== */
        .article-content-area {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .article-featured-image {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body {
            padding: 32px 36px;
        }
        .article-body .lead {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-color);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-body .content p {
            margin-bottom: 20px;
        }
        .article-body .content h2 {
            font-size: 1.5rem;
            margin: 36px 0 16px;
            color: var(--primary);
        }
        .article-body .content h3 {
            font-size: 1.2rem;
            margin: 28px 0 12px;
            color: var(--primary-light);
        }
        .article-body .content ul, .article-body .content ol {
            margin: 16px 0 20px 24px;
        }
        .article-body .content li {
            margin-bottom: 8px;
        }
        .article-body .content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--secondary);
            background: #f8f6ee;
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-not-found {
            text-align: center;
            padding: 60px 36px;
        }
        .article-not-found i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-back:hover { background: var(--primary-light); transform: translateY(-2px); }
        @media (max-width: 768px) {
            .article-body { padding: 24px 18px; }
            .article-body .lead { font-size: 1.05rem; }
            .article-body .content { font-size: 0.98rem; }
        }

        /* ===== Article Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--secondary);
            color: var(--primary);
        }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .sidebar-list a:hover { color: var(--secondary); padding-left: 4px; }
        .sidebar-list a i { color: var(--secondary); font-size: 0.7rem; }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            background: var(--bg-body);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .sidebar-tags a:hover {
            background: var(--secondary);
            color: var(--primary);
            border-color: var(--secondary);
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            text-align: center;
            padding: 28px 20px;
        }
        .sidebar-cta h3 { color: #fff; border-bottom-color: var(--secondary); }
        .sidebar-cta p { color: var(--text-light-muted); font-size: 0.92rem; margin-bottom: 18px; }
        .sidebar-cta .btn-cta { display: inline-flex; }
        @media (max-width: 992px) {
            .article-sidebar { flex-direction: row; flex-wrap: wrap; }
            .sidebar-card { flex: 1; min-width: 240px; }
        }

        /* ===== Article Tags & Share ===== */
        .article-footer-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 20px 36px;
            border-top: 1px solid var(--border-color);
            background: #fafbfc;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }
        .article-tags i { color: var(--text-muted); font-size: 0.9rem; }
        .article-tags a {
            background: var(--bg-body);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-tags a:hover {
            background: var(--secondary);
            color: var(--primary);
            border-color: var(--secondary);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-share span { font-size: 0.85rem; color: var(--text-muted); }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-body);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-share a:hover {
            background: var(--secondary);
            color: var(--primary);
            border-color: var(--secondary);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .article-footer-bar { flex-direction: column; gap: 16px; padding: 18px; }
        }

        /* ===== Related Articles ===== */
        .related-section {
            padding: 48px 0;
            background: var(--bg-body);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 36px;
        }
        .related-section .section-title h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
        }
        .related-section .section-title p {
            color: var(--text-muted);
            margin-top: 8px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .related-card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
        }
        .related-card-body {
            padding: 16px 18px 20px;
        }
        .related-card-body .cat {
            font-size: 0.72rem;
            color: var(--secondary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .related-card-body h3 {
            font-size: 1rem;
            font-weight: 600;
            margin: 6px 0 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-body h3 a { color: var(--text-primary); }
        .related-card-body h3 a:hover { color: var(--secondary); }
        .related-card-body .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        @media (max-width: 992px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 64px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-light-muted);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-form {
            display: flex;
            max-width: 480px;
            margin: 0 auto;
            gap: 8px;
        }
        .cta-form input {
            flex: 1;
            padding: 12px 20px;
            border-radius: 50px;
            border: 1px solid var(--border-light);
            background: rgba(255,255,255,0.06);
            color: #fff;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .cta-form input::placeholder { color: rgba(255,255,255,0.35); }
        .cta-form input:focus { border-color: var(--secondary); background: rgba(255,255,255,0.1); }
        .cta-form button {
            background: var(--secondary);
            color: var(--primary);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .cta-form button:hover { background: var(--secondary-hover); transform: translateY(-2px); }
        @media (max-width: 520px) {
            .cta-section h2 { font-size: 1.5rem; }
            .cta-form { flex-direction: column; }
            .cta-form input { width: 100%; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-light);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-light-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 300px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul a {
            color: var(--text-light-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer ul a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            color: var(--text-light-muted);
            font-size: 0.82rem;
        }
        .footer-bottom a { color: var(--secondary); }
        .footer-bottom a:hover { text-decoration: underline; }
        @media (max-width: 992px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
        }

        /* ===== Helper ===== */
        .section-padding { padding: 56px 0; }
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Responsive Fine-tune ===== */
        @media (max-width: 768px) {
            .section-padding { padding: 40px 0; }
        }
        @media (max-width: 520px) {
            .section-padding { padding: 32px 0; }
        }