/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --brand-primary: #0c8ee5;
            --brand-dark: #01599e;
            --brand-light: #e0effe;
            --accent-primary: #f28722;
            --accent-light: #fef0d7;
            --text-primary: #1a2332;
            --text-secondary: #4a5568;
            --text-muted: #8896a8;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-section-alt: #f1f5f9;
            --border-light: #e2e8f0;
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10), 0 4px 16px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-body);
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; }

        /* ===== 容器 ===== */
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky; top: 0; z-index: 999;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226,232,240,0.5);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 68px;
        }
        .logo {
            font-size: 1.5rem; font-weight: 800;
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex; align-items: center; gap: 8px;
        }
        .logo i { -webkit-text-fill-color: var(--brand-primary); font-size: 1.3rem; }
        .nav-list { display: flex; align-items: center; gap: 4px; }
        .nav-list a {
            padding: 8px 18px; border-radius: 8px;
            font-size: 0.95rem; font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--brand-primary); background: var(--brand-light); }
        .nav-list a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--brand-primary), #3b82f6);
            box-shadow: 0 2px 12px rgba(12,142,229,0.3);
        }
        .nav-list a.active:hover { color: #fff; background: linear-gradient(135deg, #0a7ed4, #2563eb); }
        .mobile-toggle {
            display: none; font-size: 1.5rem; color: var(--text-primary);
            background: none; cursor: pointer; padding: 8px; border-radius: 8px;
            transition: background var(--transition);
        }
        .mobile-toggle:hover { background: var(--brand-light); }
        @media (max-width: 768px) {
            .mobile-toggle { display: block; }
            .nav-list {
                position: fixed; top: 68px; left: 0; right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column; padding: 16px; gap: 6px;
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-110%); opacity: 0;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                box-shadow: 0 12px 40px rgba(0,0,0,0.08);
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-list a { width: 100%; text-align: center; padding: 12px; font-size: 1.05rem; }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 88vh;
            display: flex; align-items: center;
            background: linear-gradient(135deg, #0b1a2e 0%, #1a365d 40%, #0c8ee5 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover; background-position: center;
            opacity: 0.18; mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute; inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(12,142,229,0.15) 0%, transparent 70%);
        }
        .hero-content { position: relative; z-index: 2; padding: 80px 0; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 6px 18px; border-radius: 50px;
            background: rgba(255,255,255,0.12); backdrop-filter: blur(8px);
            color: #b9dffc; font-size: 0.85rem; font-weight: 500;
            border: 1px solid rgba(255,255,255,0.10);
            margin-bottom: 24px;
        }
        .hero-badge i { color: #7cc5fa; }
        .hero h1 {
            font-size: 3.5rem; font-weight: 800; line-height: 1.15;
            color: #fff; max-width: 720px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.15);
        }
        .hero h1 span {
            background: linear-gradient(135deg, #f5a246, #f28722);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.15rem; color: rgba(255,255,255,0.78);
            max-width: 560px; margin-top: 20px; line-height: 1.8;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 36px; }
        .hero-actions .btn-primary {
            padding: 14px 36px; border-radius: 50px;
            background: linear-gradient(135deg, #f5a246, #e36d18);
            color: #fff; font-weight: 600; font-size: 1.05rem;
            box-shadow: 0 4px 24px rgba(242,135,34,0.35);
            transition: all var(--transition);
            display: inline-flex; align-items: center; gap: 10px;
        }
        .hero-actions .btn-primary:hover {
            transform: translateY(-2px); box-shadow: 0 8px 32px rgba(242,135,34,0.45);
        }
        .hero-actions .btn-secondary {
            padding: 14px 36px; border-radius: 50px;
            background: rgba(255,255,255,0.10); backdrop-filter: blur(8px);
            color: #fff; font-weight: 500; font-size: 1.05rem;
            border: 1px solid rgba(255,255,255,0.18);
            transition: all var(--transition);
            display: inline-flex; align-items: center; gap: 10px;
        }
        .hero-actions .btn-secondary:hover {
            background: rgba(255,255,255,0.18); transform: translateY(-2px);
        }
        .hero-stats {
            display: flex; flex-wrap: wrap; gap: 40px; margin-top: 56px;
            padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.10);
        }
        .hero-stats .stat-item { text-align: left; }
        .hero-stats .stat-number {
            font-size: 2rem; font-weight: 800; color: #fff;
            letter-spacing: -0.5px;
        }
        .hero-stats .stat-label { font-size: 0.9rem; color: rgba(255,255,255,0.55); margin-top: 2px; }
        @media (max-width: 768px) {
            .hero { min-height: 70vh; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; }
            .hero-stats .stat-number { font-size: 1.5rem; }
        }
        @media (max-width: 480px) {
            .hero h1 { font-size: 1.8rem; }
            .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; justify-content: center; }
        }

        /* ===== 通用板块 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-section-alt); }
        .section-title {
            font-size: 2rem; font-weight: 800; text-align: center;
            color: var(--text-primary); margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 1.05rem; color: var(--text-secondary);
            text-align: center; max-width: 600px; margin: 0 auto 48px;
        }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }
            .section-subtitle { font-size: 0.95rem; margin-bottom: 32px; }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card); border-radius: var(--border-radius);
            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(-4px); }
        .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
        .card-body { padding: 24px; }
        .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
        .card-text { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.6; }

        /* ===== 网格 ===== */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        @media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 768px) { .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; gap: 20px; } }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 28px; border-radius: 50px; font-weight: 600;
            font-size: 0.95rem; transition: all var(--transition);
            cursor: pointer; border: none;
        }
        .btn-primary-solid {
            background: linear-gradient(135deg, var(--brand-primary), #3b82f6);
            color: #fff; box-shadow: 0 2px 12px rgba(12,142,229,0.25);
        }
        .btn-primary-solid:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(12,142,229,0.35); }
        .btn-outline {
            background: transparent; color: var(--brand-primary);
            border: 2px solid var(--brand-primary);
        }
        .btn-outline:hover { background: var(--brand-light); transform: translateY(-2px); }
        .btn-accent {
            background: linear-gradient(135deg, #f5a246, #e36d18);
            color: #fff; box-shadow: 0 2px 12px rgba(242,135,34,0.25);
        }
        .btn-accent:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(242,135,34,0.35); }

        /* ===== 标签 / 徽章 ===== */
        .tag {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 4px 14px; border-radius: 50px; font-size: 0.8rem;
            font-weight: 500; background: var(--brand-light); color: var(--brand-primary);
        }
        .tag-accent { background: var(--accent-light); color: #bc5316; }
        .tag-green { background: #e6f7ed; color: #0b7a3e; }
        .badge-number {
            display: inline-flex; align-items: center; justify-content: center;
            min-width: 28px; height: 28px; border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-primary), #3b82f6);
            color: #fff; font-size: 0.8rem; font-weight: 700;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 20px 0;
        }
        .faq-item:first-child { padding-top: 0; }
        .faq-question {
            display: flex; justify-content: space-between; align-items: center;
            font-size: 1.05rem; font-weight: 600; color: var(--text-primary);
            cursor: pointer; padding: 4px 0; transition: color var(--transition);
        }
        .faq-question:hover { color: var(--brand-primary); }
        .faq-question i { transition: transform var(--transition); color: var(--text-muted); }
        .faq-question.open i { transform: rotate(180deg); color: var(--brand-primary); }
        .faq-answer {
            max-height: 0; overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-secondary); line-height: 1.7;
        }
        .faq-answer.open { max-height: 300px; padding-top: 12px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0b1a2e 0%, #1a365d 50%, #0c8ee5 100%);
            padding: 80px 0; text-align: center; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover; background-position: center;
            opacity: 0.08; mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2.2rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-section p { font-size: 1.05rem; color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; }
        .cta-section .btn { font-size: 1.05rem; padding: 16px 44px; }
        @media (max-width: 768px) {
            .cta-section { padding: 56px 0; }
            .cta-section h2 { font-size: 1.6rem; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f1724; 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-brand .logo { font-size: 1.4rem; margin-bottom: 12px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.5); max-width: 360px; }
        .footer-col h4 { font-size: 0.95rem; font-weight: 600; color: #fff; margin-bottom: 16px; }
        .footer-col a {
            display: block; font-size: 0.88rem; color: rgba(255,255,255,0.5);
            padding: 4px 0; transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--brand-primary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px; margin-top: 24px;
            display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
            font-size: 0.85rem; color: rgba(255,255,255,0.35);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 列表项（资讯） ===== */
        .news-item {
            display: flex; gap: 20px; padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition);
        }
        .news-item:first-child { padding-top: 0; }
        .news-item:last-child { border-bottom: none; }
        .news-item:hover { background: rgba(12,142,229,0.02); }
        .news-thumb {
            width: 120px; height: 80px; border-radius: var(--border-radius-sm);
            object-fit: cover; flex-shrink: 0;
        }
        .news-info { flex: 1; display: flex; flex-direction: column; justify-content: center; }
        .news-info h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 6px; }
        .news-info h3 a { color: var(--text-primary); transition: color var(--transition); }
        .news-info h3 a:hover { color: var(--brand-primary); }
        .news-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: var(--text-muted); }
        .news-meta .cat { color: var(--brand-primary); font-weight: 500; }
        @media (max-width: 560px) {
            .news-item { flex-direction: column; gap: 12px; }
            .news-thumb { width: 100%; height: 180px; }
        }

        /* ===== 分类入口卡片（大图） ===== */
        .cat-card {
            position: relative; border-radius: var(--border-radius);
            overflow: hidden; box-shadow: var(--shadow-sm);
            transition: all var(--transition); cursor: pointer;
            aspect-ratio: 4/3; display: flex; align-items: flex-end;
        }
        .cat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
        .cat-card img {
            position: absolute; inset: 0; width: 100%; height: 100%;
            object-fit: cover; transition: transform 0.5s ease;
        }
        .cat-card:hover img { transform: scale(1.05); }
        .cat-card-overlay {
            position: relative; z-index: 2;
            width: 100%; padding: 28px 24px;
            background: linear-gradient(0deg, rgba(0,0,0,0.78) 0%, transparent 100%);
        }
        .cat-card-overlay h3 { font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 4px; }
        .cat-card-overlay p { font-size: 0.85rem; color: rgba(255,255,255,0.7); }

        /* ===== 流程步骤 ===== */
        .step-item {
            display: flex; gap: 20px; align-items: flex-start;
            padding: 24px; border-radius: var(--border-radius);
            background: var(--bg-card); border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .step-item:hover { box-shadow: var(--shadow-md); }
        .step-number {
            min-width: 48px; height: 48px; border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-primary), #3b82f6);
            color: #fff; display: flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1.1rem; flex-shrink: 0;
        }
        .step-content h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
        .step-content p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }

        /* ===== 数据统计块 ===== */
        .stat-block {
            text-align: center; padding: 32px 16px;
            background: var(--bg-card); border-radius: var(--border-radius);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .stat-block:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .stat-block .stat-icon { font-size: 2rem; color: var(--brand-primary); margin-bottom: 12px; }
        .stat-block .stat-num { font-size: 2.2rem; font-weight: 800; color: var(--text-primary); }
        .stat-block .stat-label { font-size: 0.9rem; color: var(--text-secondary); margin-top: 4px; }

        /* ===== 分隔线 ===== */
        .divider { width: 60px; height: 4px; border-radius: 4px; background: linear-gradient(135deg, var(--brand-primary), #3b82f6); margin: 12px auto 0; }

        /* ===== 辅助 ===== */
        .text-brand { color: var(--brand-primary); }
        .text-accent { color: var(--accent-primary); }
        .text-muted { color: var(--text-muted); }
        .truncate-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

        /* ===== 焦点可访问性 ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid var(--brand-primary); outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== 文章空状态 ===== */
        .empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
        .empty-state i { font-size: 3rem; margin-bottom: 16px; opacity: 0.4; }
        .empty-state p { font-size: 1rem; }

        /* ===== 移动端微调 ===== */
        @media (max-width: 480px) {
            .hero-actions { flex-direction: column; }
            .stat-block .stat-num { font-size: 1.6rem; }
        }

/* roulang page: category1 */
:root {
            --primary: #3b82f6;
            --primary-dark: #2563eb;
            --accent: #f97316;
            --accent-light: #fb923c;
            --bg-dark: #0f172a;
            --bg-darker: #020617;
            --bg-card: #1e293b;
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --text-light: #cbd5e1;
            --border-color: #334155;
            --radius: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 8px 40px rgba(59, 130, 246, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-darker);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button {
            cursor: pointer;
            transition: var(--transition);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 0.75rem;
            }
        }

        /* Header / Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(2, 6, 23, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(51, 65, 85, 0.4);
            transition: var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, #3b82f6, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo i {
            -webkit-text-fill-color: #f97316;
            font-size: 1.3rem;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-list a {
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }

        .nav-list a:hover {
            color: var(--text-main);
            background: rgba(59, 130, 246, 0.08);
        }

        .nav-list a.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(249, 115, 22, 0.15));
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
        }

        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: linear-gradient(90deg, #3b82f6, #f97316);
            border-radius: 3px;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 1.5rem;
            padding: 0.5rem;
            cursor: pointer;
            border-radius: var(--radius);
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }

            .nav-list {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(2, 6, 23, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1rem;
                gap: 0.25rem;
                border-bottom: 1px solid rgba(51, 65, 85, 0.4);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }

            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-list a {
                width: 100%;
                padding: 0.75rem 1rem;
                text-align: center;
                font-size: 1rem;
            }

            .nav-list a.active::after {
                bottom: 4px;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 1.25rem;
            }
            .site-header .container {
                height: 60px;
            }
            .nav-list {
                top: 60px;
            }
        }

        /* Banner / Hero */
        .category-banner {
            position: relative;
            padding: 8rem 0 4rem;
            background: linear-gradient(135deg, #020617 0%, #0f172a 50%, #1e293b 100%);
            overflow: hidden;
        }

        .category-banner::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-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(249, 115, 22, 0.06) 0%, transparent 60%);
            pointer-events: none;
        }

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

        .category-banner .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 1rem;
            background: rgba(249, 115, 22, 0.15);
            border: 1px solid rgba(249, 115, 22, 0.25);
            border-radius: 999px;
            font-size: 0.8rem;
            color: var(--accent-light);
            margin-bottom: 1rem;
        }

        .category-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #f1f5f9 0%, #93c5fd 50%, #fdba74 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-banner p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 650px;
            line-height: 1.8;
        }

        .category-banner .stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(51, 65, 85, 0.4);
        }

        .category-banner .stats .num {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .category-banner .stats .label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .category-banner {
                padding: 6rem 0 3rem;
            }
            .category-banner h1 {
                font-size: 2rem;
            }
            .category-banner p {
                font-size: 0.95rem;
            }
            .category-banner .stats {
                gap: 1.5rem;
                flex-wrap: wrap;
            }
            .category-banner .stats .num {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 520px) {
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner p {
                font-size: 0.88rem;
            }
            .category-banner .stats {
                gap: 1rem;
            }
            .category-banner .stats .num {
                font-size: 1.2rem;
            }
        }

        /* Section通用 */
        .section-padding {
            padding: 5rem 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            background: linear-gradient(135deg, #f1f5f9, #93c5fd);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 600px;
            line-height: 1.7;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 2.5rem;
            flex-wrap: wrap;
            gap: 1rem;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 3.5rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
            }
        }

        /* Card Grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

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

        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
        }

        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(51, 65, 85, 0.3);
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .guide-card:hover {
            transform: translateY(-4px);
            border-color: rgba(59, 130, 246, 0.2);
            box-shadow: var(--shadow-hover);
        }

        .guide-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #1e293b;
        }

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

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

        .guide-card .card-img .tag {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            padding: 0.2rem 0.7rem;
            background: rgba(249, 115, 22, 0.85);
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #fff;
            backdrop-filter: blur(4px);
        }

        .guide-card .card-img .duration {
            position: absolute;
            bottom: 0.75rem;
            right: 0.75rem;
            padding: 0.15rem 0.6rem;
            background: rgba(0, 0, 0, 0.6);
            border-radius: 999px;
            font-size: 0.75rem;
            color: #cbd5e1;
            backdrop-filter: blur(4px);
        }

        .guide-card .card-body {
            padding: 1.25rem;
        }

        .guide-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            line-height: 1.4;
            color: #f1f5f9;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .guide-card .card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 1rem;
        }

        .guide-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 1.25rem 1.25rem;
        }

        .guide-card .card-footer .author {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .guide-card .card-footer .author i {
            font-size: 0.75rem;
            color: var(--primary);
        }

        .guide-card .card-footer .views {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .guide-card .card-footer .views i {
            margin-right: 0.25rem;
            color: var(--accent);
        }

        /* Sub categories / tags */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }

        .tag-item {
            padding: 0.4rem 1.1rem;
            background: rgba(51, 65, 85, 0.3);
            border: 1px solid rgba(51, 65, 85, 0.4);
            border-radius: 999px;
            font-size: 0.85rem;
            color: var(--text-light);
            transition: var(--transition);
        }

        .tag-item:hover {
            background: rgba(59, 130, 246, 0.12);
            border-color: rgba(59, 130, 246, 0.25);
            color: #fff;
        }

        .tag-item.active {
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(249, 115, 22, 0.12));
            border-color: rgba(59, 130, 246, 0.3);
            color: #fff;
        }

        /* 热门排行 */
        .rank-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }

        @media (max-width: 768px) {
            .rank-list {
                grid-template-columns: 1fr;
            }
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.25rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid rgba(51, 65, 85, 0.25);
            transition: var(--transition);
        }

        .rank-item:hover {
            border-color: rgba(59, 130, 246, 0.2);
            transform: translateX(4px);
            box-shadow: var(--shadow-card);
        }

        .rank-item .rank-num {
            width: 2rem;
            height: 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius);
            font-weight: 700;
            font-size: 0.9rem;
            background: rgba(51, 65, 85, 0.3);
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .rank-item:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #f97316, #ea580c);
            color: #fff;
        }
        .rank-item:nth-child(2) .rank-num {
            background: linear-gradient(135deg, #fb923c, #f97316);
            color: #fff;
        }
        .rank-item:nth-child(3) .rank-num {
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            color: #1e293b;
        }

        .rank-item .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-item .rank-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #f1f5f9;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-item .rank-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .rank-item .rank-hot {
            font-size: 0.8rem;
            color: var(--accent-light);
            font-weight: 500;
            white-space: nowrap;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid rgba(51, 65, 85, 0.25);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.15);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.25rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: #f1f5f9;
            background: transparent;
            width: 100%;
            text-align: left;
            border: none;
        }

        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--primary);
            font-size: 0.85rem;
        }

        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 1.25rem;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 1.25rem 1.25rem;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(249, 115, 22, 0.05));
            border: 1px solid rgba(59, 130, 246, 0.1);
            border-radius: var(--radius-xl);
            padding: 3.5rem 3rem;
            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: 0.05;
            mix-blend-mode: overlay;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .cta-section p {
            color: var(--text-muted);
            max-width: 500px;
            margin: 0 auto 1.5rem;
            font-size: 0.95rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            background: linear-gradient(135deg, #3b82f6, #2563eb);
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            color: #fff;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
            color: #fff;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border: 1px solid rgba(59, 130, 246, 0.3);
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: var(--transition);
            background: transparent;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(59, 130, 246, 0.08);
            color: #fff;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 2.5rem 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 0.65rem 1.5rem;
                font-size: 0.9rem;
            }
        }

        /* Footer */
        .site-footer {
            background: #020617;
            border-top: 1px solid rgba(51, 65, 85, 0.2);
            padding: 4rem 0 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.75rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #f1f5f9;
            margin-bottom: 1rem;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 0.3rem 0;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(51, 65, 85, 0.2);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .site-footer {
                padding: 2.5rem 0 1.5rem;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        .breadcrumb .sep {
            color: rgba(51, 65, 85, 0.6);
            font-size: 0.75rem;
        }

        .breadcrumb .current {
            color: var(--text-light);
        }

        /* 分页 */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            margin-top: 3rem;
        }

        .pagination a,
        .pagination span {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 2.4rem;
            height: 2.4rem;
            border-radius: var(--radius);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid rgba(51, 65, 85, 0.2);
            color: var(--text-muted);
            background: transparent;
        }

        .pagination a:hover {
            border-color: rgba(59, 130, 246, 0.3);
            color: #fff;
            background: rgba(59, 130, 246, 0.08);
        }

        .pagination .active {
            background: linear-gradient(135deg, #3b82f6, #2563eb);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
        }

        .pagination .dots {
            border: none;
            color: var(--text-muted);
        }

        /* 动画 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

        /* 背景分隔装饰 */
        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.15), rgba(249, 115, 22, 0.1), transparent);
            margin: 0;
            border: none;
        }

/* roulang page: article */
:root {
            --color-bg: #0b0a15;
            --color-surface: #16132b;
            --color-card: #1e1b3a;
            --color-gold: #f5a246;
            --color-gold-light: #fbc78a;
            --color-text: #e8e6f0;
            --color-text-muted: #9d9bb8;
            --color-border: #34305a;
            --color-nav-bg: rgba(11, 10, 21, 0.92);
            --radius-card: 1.25rem;
            --radius-btn: 0.75rem;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(245, 162, 70, 0.08);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 1rem;
            }
        }
        a {
            color: var(--color-gold);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-gold-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--color-nav-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(52, 48, 90, 0.4);
            transition: background var(--transition);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo-text {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, #f5a246, #fbc78a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo-text i {
            -webkit-text-fill-color: #f5a246;
            font-size: 1.4rem;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-list a {
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-btn);
            color: var(--color-text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--color-text);
            background: rgba(245, 162, 70, 0.08);
        }
        .nav-list a.active {
            color: var(--color-gold);
            background: rgba(245, 162, 70, 0.12);
            box-shadow: inset 0 -2px 0 var(--color-gold);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--color-text);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.25rem;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(11, 10, 21, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 1rem 1.5rem 1.5rem;
                border-bottom: 1px solid var(--color-border);
                gap: 0.25rem;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                width: 100%;
                padding: 0.75rem 1rem;
                font-size: 1rem;
            }
        }

        .article-banner {
            position: relative;
            padding: 140px 0 70px;
            background: linear-gradient(135deg, #0f0e1a 0%, #1a1730 50%, #0f0e1a 100%);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 10, 21, 0.85) 0%, rgba(11, 10, 21, 0.50) 50%, rgba(11, 10, 21, 0.90) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.35rem 1rem;
            background: rgba(245, 162, 70, 0.15);
            border: 1px solid rgba(245, 162, 70, 0.25);
            border-radius: 999px;
            font-size: 0.85rem;
            color: var(--color-gold-light);
            margin-bottom: 1.25rem;
            backdrop-filter: blur(4px);
        }
        .article-badge i {
            font-size: 0.75rem;
        }
        .article-title {
            font-size: clamp(1.8rem, 5vw, 3rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: #fff;
            max-width: 900px;
            margin-bottom: 1rem;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
            align-items: center;
            color: var(--color-text-muted);
            font-size: 0.9rem;
            margin-top: 0.5rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .article-meta i {
            color: var(--color-gold);
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .article-desc {
            max-width: 750px;
            font-size: 1.05rem;
            color: rgba(232, 230, 240, 0.7);
            line-height: 1.7;
            margin-top: 1rem;
            padding: 1rem 0 0.5rem;
            border-top: 1px solid rgba(52, 48, 90, 0.3);
        }

        .article-body {
            padding: 3rem 0 4rem;
            background: var(--color-bg);
        }
        .article-content {
            max-width: 820px;
            margin: 0 auto;
            background: var(--color-surface);
            border-radius: var(--radius-card);
            padding: 2.5rem 3rem;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
        }
        .article-content p {
            margin-bottom: 1.4rem;
            font-size: 1.05rem;
            line-height: 1.85;
            color: rgba(232, 230, 240, 0.88);
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .article-content h2 {
            font-size: 1.6rem;
            border-bottom: 1px solid var(--color-border);
            padding-bottom: 0.5rem;
        }
        .article-content h3 {
            font-size: 1.3rem;
        }
        .article-content ul,
        .article-content ol {
            margin: 1rem 0 1.5rem 1.5rem;
            color: rgba(232, 230, 240, 0.85);
        }
        .article-content li {
            margin-bottom: 0.4rem;
            line-height: 1.7;
        }
        .article-content blockquote {
            border-left: 4px solid var(--color-gold);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            background: rgba(245, 162, 70, 0.05);
            border-radius: 0 0.75rem 0.75rem 0;
            color: rgba(232, 230, 240, 0.75);
            font-style: italic;
        }
        .article-content img {
            border-radius: 0.75rem;
            margin: 1.5rem auto;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .article-content code {
            background: rgba(245, 162, 70, 0.1);
            padding: 0.2rem 0.5rem;
            border-radius: 0.35rem;
            font-size: 0.9em;
            color: var(--color-gold-light);
        }
        .article-content pre {
            background: rgba(0, 0, 0, 0.4);
            padding: 1.25rem 1.5rem;
            border-radius: 0.75rem;
            overflow-x: auto;
            border: 1px solid var(--color-border);
            margin: 1.5rem 0;
        }
        .article-content a {
            color: var(--color-gold);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--color-gold-light);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .article-content th,
        .article-content td {
            padding: 0.75rem 1rem;
            border: 1px solid var(--color-border);
            text-align: left;
        }
        .article-content th {
            background: rgba(245, 162, 70, 0.08);
            color: var(--color-gold-light);
            font-weight: 600;
        }
        .article-content td {
            color: rgba(232, 230, 240, 0.8);
        }
        .article-content hr {
            border: none;
            border-top: 1px solid var(--color-border);
            margin: 2rem 0;
        }
        .article-content .cms-empty {
            text-align: center;
            padding: 3rem 1rem;
            color: var(--color-text-muted);
        }
        .article-content .cms-empty i {
            font-size: 3rem;
            margin-bottom: 1rem;
            opacity: 0.4;
            display: block;
        }
        .article-content .cms-empty a {
            display: inline-block;
            margin-top: 1rem;
            padding: 0.6rem 1.8rem;
            background: var(--color-gold);
            color: #0b0a15;
            border-radius: var(--radius-btn);
            font-weight: 600;
            text-decoration: none;
        }
        .article-content .cms-empty a:hover {
            background: var(--color-gold-light);
            color: #0b0a15;
        }
        @media (max-width: 768px) {
            .article-content {
                padding: 1.5rem 1.25rem;
            }
            .article-content p {
                font-size: 1rem;
            }
        }

        .article-footer-nav {
            max-width: 820px;
            margin: 2rem auto 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            padding: 1.5rem 0 0;
            border-top: 1px solid var(--color-border);
        }
        .article-footer-nav a {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-btn);
            background: rgba(245, 162, 70, 0.06);
            border: 1px solid var(--color-border);
            color: var(--color-text-muted);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .article-footer-nav a:hover {
            background: rgba(245, 162, 70, 0.12);
            color: var(--color-gold);
            border-color: rgba(245, 162, 70, 0.2);
        }

        .section-related {
            padding: 3rem 0 4rem;
            background: var(--color-bg);
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .section-sub {
            color: var(--color-text-muted);
            font-size: 1rem;
            margin-bottom: 2rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 1.5rem;
        }
        .related-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(245, 162, 70, 0.2);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }
        .related-card-img {
            height: 170px;
            background: var(--color-surface);
            position: relative;
            overflow: hidden;
        }
        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .related-card-img img {
            transform: scale(1.05);
        }
        .related-card-body {
            padding: 1.25rem 1.25rem 1.5rem;
        }
        .related-card-body h3 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.4rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-body .meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .related-card-body .meta i {
            font-size: 0.7rem;
            color: var(--color-gold);
            opacity: 0.6;
        }
        .related-card-body .badge {
            display: inline-block;
            padding: 0.15rem 0.6rem;
            border-radius: 999px;
            font-size: 0.7rem;
            background: rgba(245, 162, 70, 0.12);
            color: var(--color-gold-light);
            border: 1px solid rgba(245, 162, 70, 0.15);
            margin-bottom: 0.5rem;
        }

        .section-faq {
            padding: 3rem 0 4rem;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-btn);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(245, 162, 70, 0.15);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.1rem 1.5rem;
            background: none;
            border: none;
            color: var(--color-text);
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--color-gold);
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--color-gold);
            font-size: 0.85rem;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--color-text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        .section-cta {
            padding: 4rem 0;
            background: linear-gradient(135deg, #0f0e1a 0%, #1a1730 50%, #0f0e1a 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .section-cta::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;
        }
        .section-cta .container {
            position: relative;
            z-index: 1;
        }
        .section-cta h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .section-cta p {
            color: var(--color-text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 2rem;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 2.2rem;
            background: linear-gradient(135deg, #f5a246, #e8912e);
            color: #0b0a15;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            font-size: 1rem;
            box-shadow: 0 4px 20px rgba(245, 162, 70, 0.2);
        }
        .btn-gold:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(245, 162, 70, 0.35);
            color: #0b0a15;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 2.2rem;
            background: transparent;
            color: var(--color-gold);
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(245, 162, 70, 0.3);
            cursor: pointer;
            transition: all var(--transition);
            font-size: 1rem;
        }
        .btn-outline:hover {
            background: rgba(245, 162, 70, 0.08);
            border-color: var(--color-gold);
            color: var(--color-gold-light);
        }

        .site-footer {
            background: #0a0914;
            border-top: 1px solid var(--color-border);
            padding: 3.5rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(52, 48, 90, 0.3);
        }
        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .footer-brand .logo i {
            color: var(--color-gold);
        }
        .footer-brand p {
            color: var(--color-text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .footer-col a {
            display: block;
            color: var(--color-text-muted);
            font-size: 0.88rem;
            padding: 0.3rem 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--color-gold);
        }
        .footer-col a i {
            width: 1.2rem;
            color: var(--color-gold);
            opacity: 0.6;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding: 1.5rem 0;
            font-size: 0.82rem;
            color: var(--color-text-muted);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        .text-gold {
            color: var(--color-gold);
        }
        .text-gold-light {
            color: var(--color-gold-light);
        }
        .bg-gold-light {
            background: rgba(245, 162, 70, 0.08);
        }
        .border-gold-dim {
            border-color: rgba(245, 162, 70, 0.15);
        }
        .gap-1 {
            gap: 0.25rem;
        }
        .gap-2 {
            gap: 0.5rem;
        }
        .gap-3 {
            gap: 0.75rem;
        }
        .gap-4 {
            gap: 1rem;
        }
        .gap-6 {
            gap: 1.5rem;
        }
        .transition {
            transition: all var(--transition);
        }
        .rounded-btn {
            border-radius: var(--radius-btn);
        }
        .rounded-card {
            border-radius: var(--radius-card);
        }
        .shadow-card {
            box-shadow: var(--shadow-card);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
            .footer-col:last-child {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 640px) {
            .article-title {
                font-size: 1.6rem;
            }
            .article-meta {
                gap: 0.6rem 1.2rem;
                font-size: 0.8rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-cta h2 {
                font-size: 1.5rem;
            }
            .cta-buttons .btn-gold,
            .cta-buttons .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .article-footer-nav {
                flex-direction: column;
                align-items: stretch;
            }
            .article-footer-nav a {
                justify-content: center;
            }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-light: #fef3c7;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-2: #1e293b;
            --text-main: #1e293b;
            --text-light: #64748b;
            --text-white: #f1f5f9;
            --border-color: #e2e8f0;
            --radius-sm: 0.375rem;
            --radius-md: 0.75rem;
            --radius-lg: 1.25rem;
            --radius-xl: 1.75rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, #2563eb, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.3px;
        }
        .logo i {
            -webkit-text-fill-color: #f59e0b;
            font-size: 1.5rem;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-list a {
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-main);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-list a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
        }
        .nav-list a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            color: var(--text-main);
            padding: 0.25rem 0.5rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 1rem 1.25rem;
                gap: 0.4rem;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                padding: 0.7rem 1rem;
                border-radius: var(--radius-sm);
            }
        }

        /* ========== Banner ========== */
        .category-banner {
            position: relative;
            padding: 5rem 0 4rem;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-banner .bg-img {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.3;
            transform: scale(1.05);
        }
        .category-banner .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 41, 59, 0.70) 100%);
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .category-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 0.75rem;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .category-banner h1 i {
            color: var(--accent);
            margin-right: 0.5rem;
        }
        .category-banner p {
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto 1.5rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
        }
        .category-banner .badge-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.6rem;
        }
        .category-banner .badge-group span {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            padding: 0.35rem 1.1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 768px) {
            .category-banner {
                padding: 3.5rem 0 2.8rem;
                min-height: 240px;
            }
            .category-banner h1 {
                font-size: 2rem;
            }
            .category-banner p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner p {
                font-size: 0.92rem;
            }
        }

        /* ========== 板块通用 ========== */
        .section-block {
            padding: 4.5rem 0;
        }
        .section-block .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-block .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.3px;
        }
        .section-block .section-title h2 i {
            color: var(--accent);
            margin-right: 0.4rem;
        }
        .section-block .section-title p {
            color: var(--text-light);
            font-size: 1.05rem;
            margin-top: 0.5rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-block.bg-light-alt {
            background: #f1f5f9;
        }
        .section-block.bg-dark-alt {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-block.bg-dark-alt .section-title h2 {
            color: #fff;
        }
        .section-block.bg-dark-alt .section-title p {
            color: rgba(255, 255, 255, 0.7);
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 3rem 0;
            }
            .section-block .section-title h2 {
                font-size: 1.6rem;
            }
        }

        /* ========== 卡片 ========== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }
        .card .card-body {
            padding: 1.4rem 1.5rem 1.6rem;
        }
        .card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }
        .card .card-body p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        .card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.82rem;
            color: var(--text-light);
            margin-top: 0.8rem;
        }
        .card .card-body .meta i {
            margin-right: 0.25rem;
        }
        .card .card-tag {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 0.6rem;
        }
        .card .card-tag.accent {
            background: var(--accent-light);
            color: var(--accent-dark);
        }
        .card .card-tag.green {
            background: #d1fae5;
            color: #065f46;
        }

        /* ========== 网格 ========== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.8rem;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.2rem;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
        }
        @media (max-width: 520px) {
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 时间线 ========== */
        .timeline {
            position: relative;
            padding-left: 2.5rem;
            max-width: 720px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0.75rem;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
        }
        .timeline-item {
            position: relative;
            padding-bottom: 2.5rem;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item .dot {
            position: absolute;
            left: -2.5rem;
            top: 0.25rem;
            width: 1.5rem;
            height: 1.5rem;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 4px var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.7rem;
        }
        .timeline-item .dot.accent {
            background: var(--accent);
            box-shadow: 0 0 0 4px var(--accent-light);
        }
        .timeline-item .dot.green {
            background: #10b981;
            box-shadow: 0 0 0 4px #d1fae5;
        }
        .timeline-item .tl-content {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.2rem 1.5rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .timeline-item .tl-content:hover {
            box-shadow: var(--shadow-md);
        }
        .timeline-item .tl-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }
        .timeline-item .tl-content .version {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 500;
        }
        .timeline-item .tl-content p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 0.4rem;
        }
        .timeline-item .tl-content .date {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-top: 0.5rem;
            display: block;
        }
        @media (max-width: 520px) {
            .timeline {
                padding-left: 2rem;
            }
            .timeline-item .dot {
                left: -2rem;
                width: 1.2rem;
                height: 1.2rem;
                font-size: 0.55rem;
            }
            .timeline-item .tl-content {
                padding: 1rem 1.2rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-q {
            padding: 1.1rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            transition: var(--transition);
            background: transparent;
            width: 100%;
            text-align: left;
            color: var(--text-main);
        }
        .faq-item .faq-q i {
            color: var(--text-light);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-item .faq-q.open i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-q:hover {
            background: var(--primary-light);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item .faq-a.open {
            max-height: 300px;
            padding: 0 1.5rem 1.2rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #1e293b, #0f172a);
            padding: 4rem 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 520px;
            margin: 0 auto 1.8rem;
        }
        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.45);
            color: #fff;
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 3.5rem 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 0.75rem;
            background: none;
            -webkit-text-fill-color: #fff;
            color: #fff;
        }
        .site-footer .footer-brand .logo i {
            -webkit-text-fill-color: #f5a246;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #fff;
        }
        .site-footer .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 0.3rem 0;
            transition: var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--accent);
            padding-left: 0.25rem;
        }
        .site-footer .footer-col a i {
            margin-right: 0.4rem;
            width: 1rem;
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            gap: 0.8rem;
        }
        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
        }

        /* ========== 额外工具类 ========== */
        .text-gradient {
            background: linear-gradient(135deg, #2563eb, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .badge {
            display: inline-block;
            padding: 0.25rem 0.9rem;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 500;
        }
        .badge-blue {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-amber {
            background: var(--accent-light);
            color: var(--accent-dark);
        }
        .badge-green {
            background: #d1fae5;
            color: #065f46;
        }
        .gap-2 {
            gap: 0.5rem;
        }
        .gap-3 {
            gap: 1rem;
        }
        .mt-1 {
            margin-top: 0.5rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mt-3 {
            margin-top: 1.5rem;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .text-center {
            text-align: center;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
        }

        /* ========== 响应式微调 ========== */
        @media (max-width: 1024px) {
            .category-banner h1 {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 480px) {
            .section-block .section-title h2 {
                font-size: 1.4rem;
            }
            .btn {
                padding: 0.6rem 1.4rem;
                font-size: 0.9rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .card .card-body {
                padding: 1rem 1.1rem 1.2rem;
            }
            .card .card-body h3 {
                font-size: 1rem;
            }
        }

        /* ========== 版本高亮标签 ========== */
        .version-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: var(--primary);
            color: #fff;
            padding: 0.2rem 0.9rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .version-badge.small {
            font-size: 0.7rem;
            padding: 0.15rem 0.7rem;
        }
        .version-badge.accent {
            background: var(--accent);
        }
        .version-badge.green {
            background: #10b981;
        }

        /* ========== 更新亮点图标列表 ========== */
        .highlight-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
        }
        .highlight-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            background: var(--bg-card);
            padding: 1.2rem 1.4rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .highlight-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }
        .highlight-item .icon {
            flex-shrink: 0;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
        }
        .highlight-item .icon.blue {
            background: var(--primary);
        }
        .highlight-item .icon.amber {
            background: var(--accent);
        }
        .highlight-item .icon.green {
            background: #10b981;
        }
        .highlight-item .icon.purple {
            background: #8b5cf6;
        }
        .highlight-item .text h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
        }
        .highlight-item .text p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .highlight-list {
                grid-template-columns: 1fr;
                gap: 0.8rem;
            }
            .highlight-item {
                padding: 1rem 1.1rem;
            }
        }

        /* ========== 统计数字 ========== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            max-width: 900px;
            margin: 0 auto;
        }
        .stat-item {
            text-align: center;
            padding: 1.5rem 0.5rem;
        }
        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .num.accent {
            color: var(--accent);
        }
        .stat-item .num.green {
            color: #10b981;
        }
        .stat-item .label {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 0.3rem;
        }
        @media (max-width: 768px) {
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.8rem;
            }
            .stat-item .num {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 480px) {
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }