/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1b2d;
            --primary-light: #1a2d4a;
            --primary-dark: #080f1a;
            --secondary: #c9a84c;
            --secondary-light: #dcc06a;
            --accent: #e85d3a;
            --accent-light: #f07a5a;
            --bg: #f4f5f9;
            --bg-dark: #0a1520;
            --card-bg: #ffffff;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e8e8e8;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
            --transition: 0.3s ease;
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --nav-height: 72px;
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        ul, ol { list-style: none; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section { padding: 80px 0; }
        .section-title { font-size: 2rem; font-weight: 700; text-align: center; margin-bottom: 12px; color: var(--primary); }
        .section-sub { font-size: 1.05rem; text-align: center; color: var(--text-light); max-width: 640px; margin: 0 auto 48px; line-height: 1.6; }
        .text-center { text-align: center; }
        .badge { display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; background: var(--secondary); color: var(--primary); }

        /* ===== Header & Navigation (品牌活动导航) ===== */
        .header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: rgba(15,27,45,0.95); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(201,168,76,0.15); height: var(--nav-height); transition: var(--transition); }
        .header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .logo { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 700; color: var(--text-white); letter-spacing: 0.5px; }
        .logo i { color: var(--secondary); font-size: 1.5rem; }
        .logo span { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav { display: flex; align-items: center; gap: 32px; }
        .nav a { color: rgba(255,255,255,0.75); font-size: 0.95rem; font-weight: 500; padding: 6px 0; position: relative; transition: var(--transition); }
        .nav a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--secondary); transition: var(--transition); border-radius: 2px; }
        .nav a:hover { color: var(--text-white); }
        .nav a:hover::after { width: 100%; }
        .nav a.active { color: var(--secondary); }
        .nav a.active::after { width: 100%; }
        .nav-cta { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); color: var(--primary) !important; padding: 8px 24px !important; border-radius: 30px; font-weight: 600; font-size: 0.9rem; box-shadow: 0 4px 15px rgba(201,168,76,0.3); transition: var(--transition); }
        .nav-cta::after { display: none !important; }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(201,168,76,0.4); color: var(--primary) !important; }
        .nav-badge { display: inline-block; background: var(--accent); color: #fff; font-size: 0.65rem; padding: 2px 8px; border-radius: 10px; margin-left: 4px; vertical-align: super; font-weight: 600; }
        .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
        .hamburger span { width: 26px; height: 2px; background: var(--text-white); border-radius: 2px; transition: var(--transition); }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

        /* ===== Mobile Nav ===== */
        .mobile-nav { display: none; position: fixed; top: var(--nav-height); left: 0; width: 100%; background: rgba(15,27,45,0.98); backdrop-filter: blur(12px); padding: 20px 24px 32px; border-bottom: 2px solid var(--secondary); z-index: 999; transform: translateY(-110%); transition: transform 0.4s ease; }
        .mobile-nav.open { transform: translateY(0); }
        .mobile-nav a { display: block; color: rgba(255,255,255,0.8); font-size: 1.05rem; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.06); font-weight: 500; }
        .mobile-nav a:last-child { border-bottom: none; }
        .mobile-nav a.active { color: var(--secondary); }
        .mobile-nav .nav-cta { display: inline-block; margin-top: 16px; background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); color: var(--primary) !important; padding: 12px 32px; border-radius: 30px; font-weight: 600; text-align: center; border-bottom: none; }

        /* ===== Hero ===== */
        .hero { padding: 140px 0 80px; background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%); position: relative; overflow: hidden; min-height: 520px; display: flex; align-items: center; }
        .hero::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.2; mix-blend-mode: overlay; }
        .hero::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 100%; height: 80px; background: linear-gradient(to top, var(--bg), transparent); }
        .hero .container { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
        .hero-text { flex: 1; min-width: 280px; }
        .hero-text .badge { margin-bottom: 16px; background: rgba(201,168,76,0.2); color: var(--secondary); border: 1px solid rgba(201,168,76,0.3); }
        .hero-text h1 { font-size: 3rem; font-weight: 800; color: var(--text-white); line-height: 1.2; margin-bottom: 16px; }
        .hero-text h1 span { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-text p { font-size: 1.1rem; color: rgba(255,255,255,0.7); max-width: 540px; margin-bottom: 28px; line-height: 1.7; }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-actions .btn-primary { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); color: var(--primary); padding: 14px 36px; border-radius: 30px; font-weight: 600; font-size: 1rem; box-shadow: 0 8px 30px rgba(201,168,76,0.3); transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
        .hero-actions .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(201,168,76,0.4); }
        .hero-actions .btn-outline { border: 2px solid rgba(255,255,255,0.25); color: var(--text-white); padding: 12px 32px; border-radius: 30px; font-weight: 500; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
        .hero-actions .btn-outline:hover { border-color: var(--secondary); color: var(--secondary); background: rgba(201,168,76,0.08); }
        .hero-visual { flex: 0 0 320px; height: 320px; background: url('/assets/images/coverpic/cover-1.png') center/cover no-repeat; border-radius: var(--radius-lg); box-shadow: 0 20px 60px rgba(0,0,0,0.3); border: 1px solid rgba(201,168,76,0.2); }

        /* ===== Features / 核心优势 ===== */
        .features { background: var(--card-bg); }
        .features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
        .feature-card { background: var(--bg); border-radius: var(--radius); padding: 36px 28px; text-align: center; transition: var(--transition); border: 1px solid var(--border); }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .feature-card i { font-size: 2.4rem; color: var(--secondary); margin-bottom: 16px; }
        .feature-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 10px; color: var(--primary); }
        .feature-card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; }

        /* ===== Category / 版本分类入口 ===== */
        .category-section { background: var(--bg); }
        .category-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
        .category-card { position: relative; border-radius: var(--radius); overflow: hidden; background: var(--card-bg); box-shadow: var(--shadow); transition: var(--transition); border: 1px solid var(--border); }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .category-card img { width: 100%; height: 180px; object-fit: cover; }
        .category-card .cat-body { padding: 20px 24px 24px; }
        .category-card .cat-body h3 { font-size: 1.1rem; font-weight: 600; color: var(--primary); margin-bottom: 6px; }
        .category-card .cat-body p { color: var(--text-light); font-size: 0.9rem; margin-bottom: 12px; }
        .category-card .cat-body .btn-link { color: var(--secondary); font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; }
        .category-card .cat-body .btn-link:hover { color: var(--accent); gap: 10px; }

        /* ===== Latest Posts / 最新资讯 ===== */
        .posts-section { background: var(--card-bg); }
        .posts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
        .post-card { background: var(--bg); border-radius: var(--radius); overflow: hidden; transition: var(--transition); border: 1px solid var(--border); display: flex; flex-direction: column; }
        .post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .post-card .post-img { width: 100%; height: 180px; object-fit: cover; }
        .post-card .post-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .post-card .post-body .post-cat { font-size: 0.75rem; font-weight: 600; color: var(--secondary); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
        .post-card .post-body h3 { font-size: 1.05rem; font-weight: 600; color: var(--primary); margin-bottom: 8px; line-height: 1.4; }
        .post-card .post-body p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; flex: 1; }
        .post-card .post-body .post-meta { margin-top: 12px; display: flex; align-items: center; justify-content: space-between; font-size: 0.8rem; color: var(--text-light); border-top: 1px solid var(--border); padding-top: 12px; }
        .post-card .post-body .post-meta a { color: var(--secondary); font-weight: 500; }
        .post-card .post-body .post-meta a:hover { color: var(--accent); }
        .empty-posts { grid-column: 1 / -1; text-align: center; padding: 48px 24px; color: var(--text-light); font-size: 1rem; background: var(--bg); border-radius: var(--radius); border: 1px dashed var(--border); }

        /* ===== Stats / 数据统计 ===== */
        .stats-section { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); position: relative; }
        .stats-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.08; mix-blend-mode: overlay; }
        .stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px; position: relative; z-index: 2; }
        .stat-item { text-align: center; padding: 24px; }
        .stat-item .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--secondary); line-height: 1.2; margin-bottom: 6px; }
        .stat-item .stat-label { font-size: 1rem; color: rgba(255,255,255,0.7); font-weight: 400; }

        /* ===== Process / 使用流程 ===== */
        .process-section { background: var(--bg); }
        .process-steps { display: flex; flex-wrap: wrap; justify-content: center; gap: 32px; counter-reset: step; }
        .step { flex: 1; min-width: 200px; max-width: 260px; text-align: center; position: relative; padding: 32px 20px; background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); transition: var(--transition); }
        .step:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .step::before { counter-increment: step; content: counter(step); display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); color: var(--primary); font-size: 1.2rem; font-weight: 700; margin: 0 auto 16px; }
        .step h4 { font-size: 1.05rem; font-weight: 600; color: var(--primary); margin-bottom: 8px; }
        .step p { color: var(--text-light); font-size: 0.9rem; line-height: 1.5; }

        /* ===== FAQ ===== */
        .faq-section { background: var(--card-bg); }
        .faq-list { max-width: 760px; margin: 0 auto; }
        .faq-item { border-bottom: 1px solid var(--border); padding: 18px 0; }
        .faq-item:first-child { border-top: 1px solid var(--border); }
        .faq-question { display: flex; justify-content: space-between; align-items: center; font-size: 1.05rem; font-weight: 500; color: var(--primary); cursor: pointer; padding: 8px 0; transition: var(--transition); }
        .faq-question:hover { color: var(--secondary); }
        .faq-question i { font-size: 0.9rem; color: var(--secondary); transition: transform 0.3s ease; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; color: var(--text-light); font-size: 0.95rem; line-height: 1.7; }
        .faq-answer.open { max-height: 300px; padding: 8px 0 16px; }

        /* ===== CTA ===== */
        .cta-section { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); position: relative; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: 0.1; mix-blend-mode: overlay; }
        .cta-content { position: relative; z-index: 2; text-align: center; padding: 40px 24px; }
        .cta-content h2 { font-size: 2rem; font-weight: 700; color: var(--text-white); margin-bottom: 12px; }
        .cta-content p { color: rgba(255,255,255,0.7); max-width: 540px; margin: 0 auto 28px; font-size: 1.05rem; }
        .cta-content .btn-cta { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); color: var(--primary); padding: 16px 44px; border-radius: 30px; font-weight: 600; font-size: 1.05rem; box-shadow: 0 8px 30px rgba(201,168,76,0.3); transition: var(--transition); display: inline-flex; align-items: center; gap: 10px; }
        .cta-content .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(201,168,76,0.4); }

        /* ===== Footer ===== */
        .footer { background: var(--primary-dark); color: rgba(255,255,255,0.6); padding: 48px 0 32px; border-top: 1px solid rgba(201,168,76,0.1); }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
        .footer-brand .logo { margin-bottom: 12px; }
        .footer-brand p { font-size: 0.9rem; max-width: 320px; line-height: 1.6; }
        .footer h4 { color: var(--text-white); font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
        .footer a { display: block; color: rgba(255,255,255,0.5); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); }
        .footer a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.4); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-text h1 { font-size: 2.4rem; }
            .hero-visual { flex: 0 0 240px; height: 240px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav { display: none; }
            .hamburger { display: flex; }
            .mobile-nav { display: block; }
            .hero { padding: 120px 0 60px; min-height: 400px; }
            .hero-text h1 { font-size: 2rem; }
            .hero-visual { flex: 0 0 200px; height: 200px; }
            .section { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .process-steps { flex-direction: column; align-items: center; }
            .step { max-width: 100%; width: 100%; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .hero-text h1 { font-size: 1.6rem; }
            .hero-actions .btn-primary, .hero-actions .btn-outline { padding: 10px 20px; font-size: 0.9rem; }
            .hero-visual { flex: 0 0 160px; height: 160px; }
            .features-grid, .posts-grid, .category-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item .stat-number { font-size: 2rem; }
            .container { padding: 0 16px; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e85d3a;
            --primary-dark: #c94d2e;
            --primary-light: #f07a5a;
            --primary-soft: #fef0eb;
            --secondary: #2d3748;
            --secondary-light: #4a5568;
            --accent: #f6ad55;
            --accent-dark: #dd6b20;
            --bg-body: #f9f7f6;
            --bg-card: #ffffff;
            --bg-dark: #1a202c;
            --bg-section-alt: #f1ece9;
            --text-primary: #1a202c;
            --text-secondary: #4a5568;
            --text-light: #718096;
            --text-white: #ffffff;
            --border-color: #e2dcd8;
            --border-light: #f0ebe7;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 40px rgba(0,0,0,0.10);
            --transition: 0.25s ease;
            --spacing-section: 80px;
            --max-width: 1200px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        button, input, textarea { font-family: inherit; font-size: 1rem; }
        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; color: var(--text-primary); }
        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.35rem; }
        h4 { font-size: 1.1rem; }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            background: var(--bg-card);
            box-shadow: 0 2px 12px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--border-color);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding-top: 0;
            padding-bottom: 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover span {
            -webkit-text-fill-color: var(--primary);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav a.active {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav .nav-cta {
            background: var(--primary);
            color: var(--text-white) !important;
            padding: 8px 22px;
            border-radius: 24px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(232,93,58,0.25);
        }
        .nav .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232,93,58,0.35);
        }
        .nav .nav-cta i { font-size: 0.9rem; }
        .nav .nav-badge {
            background: var(--accent);
            color: var(--text-primary);
            font-size: 0.65rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 12px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: all var(--transition);
        }

        /* ===== Hero / Page Banner ===== */
        .page-hero {
            background: linear-gradient(135deg, #1a202c 0%, #2d3748 50%, #1a202c 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 0 72px;
            text-align: center;
            position: relative;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26,32,44,0.6);
            backdrop-filter: brightness(0.7);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            color: var(--text-white);
            font-size: 2.8rem;
            margin-bottom: 16px;
            text-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
        .page-hero h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .page-hero p {
            color: rgba(255,255,255,0.85);
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 24px;
        }
        .page-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-top: 20px;
        }
        .page-hero .hero-tags span {
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(4px);
            color: var(--text-white);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255,255,255,0.2);
        }

        /* ===== Section Spacing ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .section-title h2 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .section-title p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .title-line {
            display: inline-block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin-top: 8px;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
            border-color: var(--border-color);
        }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .card h3 { margin-bottom: 8px; font-size: 1.2rem; }
        .card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }

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

        /* ===== Steps / Timeline ===== */
        .steps-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            counter-reset: step-counter;
        }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .step-item::before {
            counter-increment: step-counter;
            content: "步骤 " counter(step-counter);
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 2px 14px;
            border-radius: 12px;
            letter-spacing: 0.5px;
        }
        .step-item h3 { font-size: 1.1rem; margin-bottom: 8px; padding-right: 80px; }
        .step-item p { color: var(--text-secondary); font-size: 0.92rem; }
        .step-item .step-icon {
            color: var(--primary);
            font-size: 1.4rem;
            margin-bottom: 10px;
        }

        /* ===== Version Compare Table ===== */
        .table-wrap {
            overflow-x: auto;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            min-width: 640px;
        }
        .table-wrap th, .table-wrap td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.95rem;
        }
        .table-wrap th {
            background: var(--secondary);
            color: var(--text-white);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
        }
        .table-wrap tr:last-child td { border-bottom: none; }
        .table-wrap tr:hover td { background: #fdf9f7; }
        .table-wrap .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .tag-green { background: #e6f7e6; color: #2b6e2b; }
        .tag-yellow { background: #fef7e0; color: #9c7c2e; }
        .tag-red { background: #fde8e8; color: #b33c3c; }
        .tag-blue { background: #e0edff; color: #2b5f9c; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--border-color); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
            gap: 16px;
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform var(--transition);
        }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 64px 0;
            text-align: center;
            color: var(--text-white);
        }
        .cta-section h2 { color: var(--text-white); font-size: 2rem; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.9); max-width: 600px; margin: 0 auto 28px; font-size: 1.05rem; }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--text-white);
            color: var(--primary) !important;
            padding: 14px 36px;
            border-radius: 32px;
            font-weight: 800;
            font-size: 1.05rem;
            box-shadow: 0 8px 24px rgba(0,0,0,0.15);
            transition: all var(--transition);
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0,0,0,0.25);
            background: #fff5f0;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px;
        }
        .footer .logo { color: var(--text-white); margin-bottom: 16px; }
        .footer .logo span { -webkit-text-fill-color: var(--text-white); }
        .footer .logo i { color: var(--primary); }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand p { font-size: 0.92rem; line-height: 1.7; max-width: 400px; margin-top: 8px; }
        .footer h4 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .footer a {
            display: block;
            color: rgba(255,255,255,0.6);
            padding: 4px 0;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 16px 0;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .breadcrumb a { color: var(--text-secondary); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb i { font-size: 0.7rem; color: var(--text-light); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .steps-list { grid-template-columns: 1fr; }
            .page-hero h1 { font-size: 2.2rem; }
        }
        @media (max-width: 768px) {
            .header .container { height: 64px; }
            .nav { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg-card); border-bottom: 2px solid var(--border-color); padding: 20px; box-shadow: var(--shadow); gap: 6px; }
            .nav.show { display: flex; }
            .nav a { padding: 12px 16px; width: 100%; }
            .nav a.active::after { display: none; }
            .nav a.active { background: var(--primary-soft); border-radius: var(--radius-sm); }
            .nav .nav-cta { justify-content: center; }
            .menu-toggle { display: flex; }
            .grid-2, .grid-3 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: 1fr 1fr; }
            .page-hero { padding: 60px 0 48px; }
            .page-hero h1 { font-size: 1.8rem; }
            .page-hero p { font-size: 1rem; }
            .section-title h2 { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            :root { --spacing-section: 48px; }
            .steps-list { grid-template-columns: 1fr; }
            .cta-section h2 { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .grid-4 { grid-template-columns: 1fr; }
            .page-hero h1 { font-size: 1.5rem; }
            .container { padding: 0 16px; }
            .logo { font-size: 1.1rem; }
            .logo i { font-size: 1.3rem; }
            .hero-tags span { font-size: 0.75rem; padding: 4px 12px; }
            .table-wrap th, .table-wrap td { padding: 10px 12px; font-size: 0.82rem; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 16px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .badge-primary { background: var(--primary); color: var(--text-white); }
        .badge-accent { background: var(--accent); color: var(--text-primary); }
        .badge-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }

        /* ===== Cover image card ===== */
        .cover-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            background: var(--bg-card);
            transition: all var(--transition);
        }
        .cover-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .cover-card .card-body {
            padding: 20px;
        }
        .cover-card .card-body h3 { font-size: 1.05rem; margin-bottom: 6px; }
        .cover-card .card-body p { font-size: 0.88rem; color: var(--text-secondary); }
        .cover-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }

        /* ===== Inline list ===== */
        .inline-list { display: flex; flex-wrap: wrap; gap: 12px; }
        .inline-list li {
            background: var(--bg-card);
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            font-size: 0.92rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }
        .inline-list li:hover { border-color: var(--primary); color: var(--primary); }
        .inline-list li i { color: var(--primary); font-size: 0.9rem; }

        /* ===== Data block ===== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .data-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 16px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .data-item .num {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
        }
        .data-item .label {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .data-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .data-grid { grid-template-columns: 1fr; }
        }

        /* ===== Focus / Accessibility ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e8542a;
            --primary-dark: #cf3f1a;
            --primary-light: #f06a42;
            --primary-gradient: linear-gradient(135deg, #e8542a 0%, #d43b1a 100%);
            --secondary: #1a1a2e;
            --secondary-light: #2d2d44;
            --accent: #f5c518;
            --accent-soft: #fef3d5;
            --bg-body: #f7f5f2;
            --bg-card: #ffffff;
            --bg-dark: #14141f;
            --bg-section-alt: #f0ede8;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a5a;
            --text-muted: #8a8a9a;
            --text-light: #f0ede8;
            --text-white: #ffffff;
            --border: #e0ddd8;
            --border-light: #f0ede8;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
            --container: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--nav-height);
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; transition: var(--transition); }
        button:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 6px; }
        input, textarea { font-family: inherit; font-size: 1rem; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 14px; background: var(--bg-card); transition: var(--transition); color: var(--text-primary); }
        input:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(232,84,42,0.15); }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        ul, ol { list-style: none; }
        ::selection { background: var(--primary); color: #fff; }

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

        /* ===== 导航 ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(20, 20, 31, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--nav-height);
            display: flex; align-items: center;
            transition: var(--transition);
        }
        .header .container {
            display: flex; align-items: center; justify-content: space-between;
            width: 100%;
        }
        .header .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.35rem; font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
            transition: var(--transition);
        }
        .header .logo i { color: var(--primary); font-size: 1.5rem; }
        .header .logo:hover { color: var(--primary-light); }
        .nav {
            display: flex; align-items: center; gap: 8px;
        }
        .nav a {
            color: rgba(255,255,255,0.70);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 30px;
            transition: var(--transition);
            position: relative;
        }
        .nav a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav a.active { color: #fff; background: var(--primary-gradient); box-shadow: 0 4px 14px rgba(232,84,42,0.35); }
        .nav a.active:hover { background: var(--primary-gradient); box-shadow: 0 6px 20px rgba(232,84,42,0.45); }
        .nav a.nav-cta {
            background: var(--primary-gradient);
            color: #fff;
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(232,84,42,0.30);
            display: flex; align-items: center; gap: 8px;
        }
        .nav a.nav-cta:hover { box-shadow: 0 6px 24px rgba(232,84,42,0.45); transform: translateY(-1px); }
        .nav a.nav-cta i { font-size: 0.9rem; }
        .nav-badge {
            background: var(--accent);
            color: var(--secondary);
            font-size: 0.65rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; background: transparent; border: none; }
        .nav-toggle span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 4px; transition: var(--transition); }
        @media (max-width: 768px) {
            .nav-toggle { display: flex; }
            .nav {
                position: fixed; top: var(--nav-height); left: 0; right: 0;
                background: rgba(20,20,31,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column; padding: 20px 16px 28px;
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid rgba(255,255,255,0.06);
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
            }
            .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav a { width: 100%; text-align: center; padding: 12px 18px; font-size: 1rem; }
            .nav a.nav-cta { justify-content: center; }
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .article-banner::after {
            content: '';
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(20,20,31,0.88) 0%, rgba(20,20,31,0.60) 100%);
            z-index: 1;
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-breadcrumb {
            display: flex; align-items: center; gap: 10px;
            color: rgba(255,255,255,0.55);
            font-size: 0.85rem;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: rgba(255,255,255,0.70); }
        .article-breadcrumb a:hover { color: var(--primary-light); }
        .article-breadcrumb i { font-size: 0.7rem; color: rgba(255,255,255,0.30); }
        .article-banner .article-category {
            display: inline-block;
            background: var(--primary-gradient);
            color: #fff;
            font-size: 0.75rem; font-weight: 600;
            padding: 4px 14px; border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-white);
            max-width: 880px;
            line-height: 1.3;
            margin-bottom: 20px;
        }
        .article-meta {
            display: flex; align-items: center; gap: 24px;
            color: rgba(255,255,255,0.65);
            font-size: 0.88rem;
            flex-wrap: wrap;
        }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        .article-meta i { color: var(--primary-light); }
        @media (max-width: 768px) {
            .article-banner { padding: 50px 0 40px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-meta { gap: 14px; font-size: 0.82rem; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.35rem; }
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 50px 0 70px;
            background: var(--bg-body);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .article-content-wrap {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            border: 1px solid var(--border-light);
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-content h2 {
            font-size: 1.55rem;
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-light);
        }
        .article-content h3 {
            font-size: 1.25rem;
            margin: 28px 0 12px;
        }
        .article-content p {
            margin-bottom: 18px;
            color: var(--text-secondary);
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 28px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content ul,
        .article-content ol {
            margin: 18px 0 18px 24px;
            color: var(--text-secondary);
        }
        .article-content ul { list-style: disc; }
        .article-content ol { list-style: decimal; }
        .article-content li { margin-bottom: 8px; }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(232,84,42,0.06);
            padding: 18px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
        .article-content a:hover { color: var(--primary-dark); }
        .article-tags {
            display: flex; flex-wrap: wrap; gap: 10px;
            margin-top: 36px; padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .article-tags .tag {
            display: inline-flex; align-items: center; gap: 5px;
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            font-size: 0.8rem; font-weight: 500;
            padding: 5px 14px; border-radius: 20px;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary); color: #fff; }
        .article-tags .tag i { font-size: 0.7rem; }

        /* ===== 侧边栏 ===== */
        .article-sidebar { display: flex; flex-direction: column; gap: 28px; }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px 22px;
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-light);
            display: flex; align-items: center; gap: 8px;
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-list { display: flex; flex-direction: column; gap: 14px; }
        .sidebar-list-item {
            display: flex; gap: 12px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-list-item:last-child { border-bottom: none; padding-bottom: 0; }
        .sidebar-list-item img {
            width: 72px; height: 54px; object-fit: cover;
            border-radius: var(--radius-sm); flex-shrink: 0;
        }
        .sidebar-list-item .info { flex: 1; min-width: 0; }
        .sidebar-list-item .info a {
            font-size: 0.88rem; font-weight: 600; color: var(--text-primary);
            display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
            line-height: 1.4;
        }
        .sidebar-list-item .info a:hover { color: var(--primary); }
        .sidebar-list-item .info .date { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }
        .sidebar-cta {
            background: var(--primary-gradient);
            color: #fff;
            text-align: center;
            padding: 28px 22px;
            border-radius: var(--radius-md);
        }
        .sidebar-cta h4 { color: #fff; font-size: 1.1rem; margin-bottom: 6px; }
        .sidebar-cta p { font-size: 0.85rem; opacity: 0.85; margin-bottom: 18px; }
        .sidebar-cta .btn {
            background: #fff; color: var(--primary);
            padding: 10px 28px; border-radius: 30px;
            font-weight: 700; font-size: 0.9rem;
            display: inline-flex; align-items: center; gap: 8px;
            transition: var(--transition);
        }
        .sidebar-cta .btn:hover { background: var(--accent); color: var(--secondary); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.20); }
        .sidebar-category-list { display: flex; flex-direction: column; gap: 6px; }
        .sidebar-category-list a {
            display: flex; align-items: center; gap: 10px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .sidebar-category-list a:hover { background: var(--bg-section-alt); color: var(--primary); padding-left: 20px; }
        .sidebar-category-list a i { font-size: 0.75rem; color: var(--primary); width: 16px; }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .sidebar-cta { grid-column: 1 / -1; }
        }
        @media (max-width: 640px) {
            .article-content-wrap { padding: 24px 18px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .article-content { font-size: 0.98rem; }
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 60px 0 70px;
            background: var(--bg-section-alt);
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 32px;
            text-align: center;
        }
        .related-section .section-title span { color: var(--primary); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
        .related-card .body { padding: 18px 20px 20px; }
        .related-card .body .cat {
            font-size: 0.7rem; font-weight: 600; color: var(--primary);
            text-transform: uppercase; letter-spacing: 0.5px;
            display: inline-block; margin-bottom: 6px;
        }
        .related-card .body h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
        .related-card .body h4 a { color: var(--text-primary); }
        .related-card .body h4 a:hover { color: var(--primary); }
        .related-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; }
        @media (max-width: 768px) {
            .related-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-section .section-title { font-size: 1.3rem; }
        }

        /* ===== CTA ===== */
        .article-cta {
            padding: 60px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .article-cta::before {
            content: '';
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.10;
            z-index: 0;
        }
        .article-cta .container { position: relative; z-index: 1; text-align: center; }
        .article-cta h2 { color: #fff; font-size: 1.8rem; font-weight: 800; margin-bottom: 12px; }
        .article-cta p { color: rgba(255,255,255,0.65); font-size: 1.05rem; max-width: 600px; margin: 0 auto 28px; }
        .article-cta .btn-group { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
        .article-cta .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            padding: 14px 36px; border-radius: 30px;
            font-weight: 700; font-size: 1rem;
            display: inline-flex; align-items: center; gap: 10px;
            box-shadow: 0 8px 28px rgba(232,84,42,0.35);
            transition: var(--transition);
        }
        .article-cta .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(232,84,42,0.45); color: #fff; }
        .article-cta .btn-secondary {
            background: rgba(255,255,255,0.08);
            color: #fff;
            padding: 14px 36px; border-radius: 30px;
            font-weight: 600; font-size: 1rem;
            border: 1px solid rgba(255,255,255,0.15);
            display: inline-flex; align-items: center; gap: 10px;
            transition: var(--transition);
        }
        .article-cta .btn-secondary:hover { background: rgba(255,255,255,0.15); color: #fff; }
        @media (max-width: 520px) {
            .article-cta h2 { font-size: 1.4rem; }
            .article-cta .btn-primary, .article-cta .btn-secondary { width: 100%; justify-content: center; }
        }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-box i { font-size: 3rem; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.6rem; color: var(--text-primary); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-secondary); margin-bottom: 24px; }
        .not-found-box .btn-home {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--primary-gradient); color: #fff;
            padding: 12px 32px; border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-home:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,84,42,0.35); color: #fff; }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.70);
            padding: 56px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .logo { display: flex; align-items: center; gap: 10px; font-size: 1.2rem; font-weight: 800; color: #fff; margin-bottom: 14px; }
        .footer-brand .logo i { color: var(--primary); }
        .footer-brand p { font-size: 0.88rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 360px; }
        .footer h4 { color: #fff; font-size: 0.95rem; font-weight: 700; margin-bottom: 16px; }
        .footer a { display: block; color: rgba(255,255,255,0.55); font-size: 0.88rem; padding: 4px 0; transition: var(--transition); }
        .footer a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding-top: 24px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.40);
            flex-wrap: wrap; gap: 10px;
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-brand { grid-column: 1 / -1; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
        }

        /* ===== 通用工具 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }