/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #ff2d55;
            --clr-primary-dark: #cc1a3f;
            --clr-primary-glow: rgba(255, 45, 85, 0.35);
            --clr-secondary: #7c3aed;
            --clr-secondary-dark: #5b21b6;
            --clr-accent: #f59e0b;
            --clr-bg: #0b0d1a;
            --clr-bg-alt: #11142a;
            --clr-bg-card: #171b3a;
            --clr-bg-card-hover: #1e2350;
            --clr-surface: #1a1f42;
            --clr-text: #f1f5f9;
            --clr-text-dim: #94a3b8;
            --clr-text-muted: #64748b;
            --clr-border: rgba(255, 45, 85, 0.15);
            --clr-border-light: rgba(255, 255, 255, 0.06);
            --clr-nav-bg: rgba(11, 13, 26, 0.92);
            --clr-nav-border: rgba(255, 45, 85, 0.2);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 45, 85, 0.06);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 45, 85, 0.15);
            --shadow-glow: 0 0 30px rgba(255, 45, 85, 0.15);
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --font-display: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-w: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.65;
            color: var(--clr-text);
            background: var(--clr-bg);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--clr-primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--clr-accent); }
        a:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 2px; border-radius: var(--radius-sm); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; color: inherit; }
        button:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 2px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); line-height: 1.25; font-weight: 700; color: var(--clr-text); }
        ::selection { background: var(--clr-primary); color: #fff; }
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--clr-bg); }
        ::-webkit-scrollbar-thumb { background: var(--clr-primary-dark); border-radius: 20px; }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: var(--clr-nav-bg);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-bottom: 1px solid var(--clr-nav-border);
            height: var(--header-h);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.5); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: var(--header-h); gap: 24px;
        }
        .logo {
            font-family: var(--font-display); font-size: 24px; font-weight: 800;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
            -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 { font-size: 20px; -webkit-text-fill-color: initial; color: var(--clr-primary); }
        .nav-list { display: flex; align-items: center; gap: 4px; }
        .nav-list a {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 18px; border-radius: var(--radius-md);
            font-size: 14px; font-weight: 500; color: var(--clr-text-dim);
            transition: var(--transition); position: relative;
        }
        .nav-list a i { font-size: 14px; }
        .nav-list a:hover { color: var(--clr-text); background: rgba(255, 255, 255, 0.04); }
        .nav-list a.active {
            color: var(--clr-primary); background: rgba(255, 45, 85, 0.08);
        }
        .nav-list a.active::after {
            content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
            width: 60%; height: 2px; background: var(--clr-primary);
            border-radius: 4px; box-shadow: 0 0 12px var(--clr-primary-glow);
        }
        .nav-cta {
            padding: 8px 24px; border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            color: #fff !important; font-weight: 600; font-size: 14px;
            box-shadow: 0 4px 20px rgba(255, 45, 85, 0.25);
            transition: var(--transition);
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(255, 45, 85, 0.4); color: #fff !important; background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-secondary-dark)); }
        .nav-toggle { display: none; font-size: 24px; color: var(--clr-text); padding: 8px; }
        @media (max-width: 768px) {
            .nav-list { display: none; }
            .nav-toggle { display: flex; align-items: center; justify-content: center; }
            .nav-list.open {
                display: flex; flex-direction: column; position: absolute; top: var(--header-h); left: 0; right: 0;
                background: var(--clr-nav-bg); backdrop-filter: blur(20px);
                padding: 16px 24px 24px; gap: 4px; border-bottom: 1px solid var(--clr-nav-border);
            }
            .nav-list.open a { width: 100%; padding: 12px 16px; }
            .nav-list.open .nav-cta { text-align: center; margin-top: 8px; }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 32px; border-radius: var(--radius-md);
            font-weight: 600; font-size: 15px; line-height: 1;
            transition: var(--transition); border: none;
            cursor: pointer; text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            color: #fff; box-shadow: 0 4px 24px rgba(255, 45, 85, 0.3);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 36px rgba(255, 45, 85, 0.45); color: #fff; }
        .btn-outline {
            background: transparent; color: var(--clr-text);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .btn-outline:hover { border-color: var(--clr-primary); color: var(--clr-primary); background: rgba(255, 45, 85, 0.06); transform: translateY(-2px); }
        .btn-lg { padding: 18px 44px; font-size: 17px; border-radius: var(--radius-lg); }
        .btn-sm { padding: 8px 20px; font-size: 13px; border-radius: var(--radius-sm); }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 100vh;
            display: flex; align-items: center;
            padding: calc(var(--header-h) + 40px) 0 80px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            filter: brightness(0.35) saturate(1.2);
            z-index: 0;
        }
        .hero-bg::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(11,13,26,0.85) 0%, rgba(11,13,26,0.4) 50%, rgba(11,13,26,0.85) 100%);
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-content { max-width: 780px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 6px 18px; border-radius: 100px;
            background: rgba(255, 45, 85, 0.12); border: 1px solid rgba(255, 45, 85, 0.2);
            font-size: 13px; font-weight: 500; color: var(--clr-primary);
            margin-bottom: 24px; letter-spacing: 0.5px;
        }
        .hero-badge i { font-size: 12px; }
        .hero h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800; line-height: 1.1;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 40%, var(--clr-primary) 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--clr-text-dim);
            max-width: 600px; margin-bottom: 36px;
            line-height: 1.7;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-stats {
            display: flex; gap: 40px; margin-top: 56px;
            padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.06);
        }
        .hero-stat h3 { font-size: 28px; font-weight: 800; color: var(--clr-primary); }
        .hero-stat p { font-size: 13px; color: var(--clr-text-muted); margin: 0; }
        @media (max-width: 640px) {
            .hero { min-height: auto; padding: calc(var(--header-h) + 32px) 0 60px; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat h3 { font-size: 22px; }
        }

        /* ===== 通用板块 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--clr-bg-alt); }
        .section-header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
        .section-header h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            margin-bottom: 14px;
        }
        .section-header h2 i { color: var(--clr-primary); margin-right: 8px; }
        .section-header p { color: var(--clr-text-dim); font-size: 1.05rem; }
        .section-tag {
            display: inline-block; padding: 4px 16px; border-radius: 100px;
            background: rgba(255, 45, 85, 0.08); border: 1px solid rgba(255, 45, 85, 0.12);
            font-size: 12px; font-weight: 600; color: var(--clr-primary);
            letter-spacing: 1px; text-transform: uppercase; margin-bottom: 12px;
        }

        /* ===== 卡片网格 ===== */
        .grid { display: grid; gap: 24px; }
        .grid-2 { grid-template-columns: repeat(2, 1fr); }
        .grid-3 { grid-template-columns: repeat(3, 1fr); }
        .grid-4 { grid-template-columns: repeat(4, 1fr); }
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 640px) {
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--clr-border);
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card:hover { background: var(--clr-bg-card-hover); border-color: rgba(255, 45, 85, 0.2); transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
        .card-icon {
            width: 52px; height: 52px; border-radius: var(--radius-md);
            display: flex; align-items: center; justify-content: center;
            font-size: 22px; margin-bottom: 18px;
            background: rgba(255, 45, 85, 0.1); color: var(--clr-primary);
        }
        .card h3 { font-size: 18px; margin-bottom: 10px; }
        .card p { color: var(--clr-text-dim); font-size: 14px; line-height: 1.6; }
        .card-link { margin-top: 16px; font-size: 13px; font-weight: 600; color: var(--clr-primary); display: inline-flex; align-items: center; gap: 6px; }

        /* ===== 分类入口 ===== */
        .category-card {
            position: relative; border-radius: var(--radius-lg); overflow: hidden;
            background: var(--clr-bg-card); border: 1px solid var(--clr-border);
            transition: var(--transition); height: 100%;
            display: flex; flex-direction: column;
        }
        .category-card:hover { transform: translateY(-4px); border-color: rgba(255, 45, 85, 0.25); box-shadow: var(--shadow-card-hover); }
        .category-card .cat-img {
            width: 100%; height: 200px; object-fit: cover;
            border-bottom: 1px solid var(--clr-border);
        }
        .category-card .cat-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .category-card .cat-tag {
            display: inline-block; padding: 3px 12px; border-radius: 100px;
            background: rgba(255, 45, 85, 0.1); color: var(--clr-primary);
            font-size: 11px; font-weight: 600; letter-spacing: 0.5px;
            margin-bottom: 10px; width: fit-content;
        }
        .category-card h3 { font-size: 18px; margin-bottom: 8px; }
        .category-card p { color: var(--clr-text-dim); font-size: 14px; line-height: 1.6; flex: 1; }
        .category-card .cat-footer { margin-top: 16px; display: flex; align-items: center; justify-content: space-between; }
        .category-card .cat-btn {
            padding: 6px 18px; border-radius: var(--radius-sm);
            background: rgba(255, 45, 85, 0.08); color: var(--clr-primary);
            font-size: 13px; font-weight: 600; transition: var(--transition);
        }
        .category-card .cat-btn:hover { background: var(--clr-primary); color: #fff; }

        /* ===== 资讯 / 内容列表 ===== */
        .post-card {
            display: flex; gap: 20px; padding: 20px 0;
            border-bottom: 1px solid var(--clr-border-light);
            transition: var(--transition);
        }
        .post-card:last-child { border-bottom: none; }
        .post-card:hover { padding-left: 8px; }
        .post-card .post-img {
            width: 200px; min-height: 130px; border-radius: var(--radius-md);
            object-fit: cover; flex-shrink: 0;
            background: var(--clr-bg-card);
        }
        .post-card .post-body { flex: 1; display: flex; flex-direction: column; justify-content: center; }
        .post-card .post-meta { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--clr-text-muted); margin-bottom: 8px; }
        .post-card .post-meta .cat { color: var(--clr-primary); font-weight: 600; }
        .post-card h3 { font-size: 18px; margin-bottom: 8px; }
        .post-card h3 a { color: var(--clr-text); }
        .post-card h3 a:hover { color: var(--clr-primary); }
        .post-card p { color: var(--clr-text-dim); font-size: 14px; line-height: 1.6; }
        .post-card .post-read { margin-top: 10px; font-size: 13px; font-weight: 600; color: var(--clr-primary); display: inline-flex; align-items: center; gap: 6px; }
        @media (max-width: 640px) {
            .post-card { flex-direction: column; }
            .post-card .post-img { width: 100%; height: 180px; }
        }

        /* ===== 数据 / 流程 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-item {
            text-align: center; padding: 36px 20px;
            background: var(--clr-bg-card); border-radius: var(--radius-lg);
            border: 1px solid var(--clr-border); transition: var(--transition);
        }
        .stat-item:hover { border-color: rgba(255, 45, 85, 0.2); transform: translateY(-4px); }
        .stat-item .num { font-size: 36px; font-weight: 800; color: var(--clr-primary); }
        .stat-item .label { font-size: 14px; color: var(--clr-text-dim); margin-top: 6px; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr 1fr; } }

        /* ===== 流程步骤 ===== */
        .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: step; }
        .step-item { text-align: center; position: relative; }
        .step-item::before {
            counter-increment: step; content: counter(step);
            position: absolute; top: -8px; left: 50%; transform: translateX(-50%);
            width: 44px; height: 44px; border-radius: 50%;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            color: #fff; font-size: 18px; font-weight: 700;
            display: flex; align-items: center; justify-content: center;
            box-shadow: 0 0 30px rgba(255, 45, 85, 0.25);
        }
        .step-item .step-body { padding-top: 52px; }
        .step-item h4 { font-size: 18px; margin-bottom: 8px; }
        .step-item p { color: var(--clr-text-dim); font-size: 14px; line-height: 1.6; }
        @media (max-width: 768px) { .steps { grid-template-columns: 1fr; gap: 24px; } }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            border-bottom: 1px solid var(--clr-border-light);
            padding: 20px 0;
        }
        .faq-item:first-child { border-top: 1px solid var(--clr-border-light); }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            font-size: 17px; font-weight: 600; color: var(--clr-text);
            cursor: pointer; padding: 4px 0; transition: var(--transition);
            background: none; border: none; width: 100%; text-align: left;
        }
        .faq-question:hover { color: var(--clr-primary); }
        .faq-question i { font-size: 16px; transition: var(--transition); color: var(--clr-text-muted); }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--clr-primary); }
        .faq-answer {
            max-height: 0; overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            color: var(--clr-text-dim); font-size: 15px; line-height: 1.7;
        }
        .faq-item.open .faq-answer { max-height: 300px; padding-top: 14px; }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--clr-bg-alt), rgba(124, 58, 237, 0.06));
            position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08; filter: brightness(0.5);
        }
        .cta-box {
            position: relative; z-index: 1;
            text-align: center; max-width: 700px; margin: 0 auto;
        }
        .cta-box h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); margin-bottom: 16px; }
        .cta-box p { color: var(--clr-text-dim); font-size: 1.05rem; margin-bottom: 32px; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--clr-bg-alt);
            border-top: 1px solid var(--clr-border-light);
            padding: 48px 0 32px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { margin-bottom: 14px; }
        .footer-brand p { color: var(--clr-text-dim); font-size: 14px; max-width: 320px; line-height: 1.7; }
        .footer-social { display: flex; gap: 12px; margin-top: 20px; }
        .footer-social a {
            width: 40px; height: 40px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            background: rgba(255, 255, 255, 0.04); color: var(--clr-text-dim);
            font-size: 16px; transition: var(--transition);
        }
        .footer-social a:hover { background: var(--clr-primary); color: #fff; transform: translateY(-3px); }
        .footer-col h4 { font-size: 15px; margin-bottom: 16px; color: var(--clr-text); }
        .footer-col a {
            display: block; padding: 5px 0; font-size: 14px; color: var(--clr-text-dim);
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--clr-primary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid var(--clr-border-light);
            padding-top: 24px; margin-top: 24px;
            display: flex; align-items: center; justify-content: space-between;
            font-size: 13px; color: var(--clr-text-muted);
        }
        .footer-bottom a { color: var(--clr-text-muted); }
        .footer-bottom a:hover { color: var(--clr-primary); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
        }

        /* ===== 移动端菜单覆盖 ===== */
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-header { margin-bottom: 36px; }
        }

        /* ===== 空状态 ===== */
        .empty-state { text-align: center; padding: 40px 20px; color: var(--clr-text-muted); }
        .empty-state i { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }
        .empty-state p { font-size: 15px; }

        /* ===== 图片遮罩辅助 ===== */
        .img-overlay { position: relative; }
        .img-overlay::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(to top, rgba(11,13,26,0.6) 0%, transparent 60%);
            pointer-events: none;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #f0a500;
            --primary-dark: #d48900;
            --primary-light: #ffc233;
            --secondary: #7c3aed;
            --secondary-light: #a78bfa;
            --accent: #f59e0b;
            --bg-dark: #0b0e14;
            --bg-card: #131820;
            --bg-card-hover: #1a2333;
            --bg-elevated: #1a2333;
            --bg-body: #0b0e14;
            --text-white: #f1f5f9;
            --text-light: #cbd5e1;
            --text-muted: #8899aa;
            --text-dark: #0f172a;
            --border-color: #2a3a4a;
            --border-glow: rgba(240, 165, 0, 0.25);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 30px rgba(240,165,0,0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-body);
            min-height: 100vh;
        }
        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; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--text-white); }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11,14,20,0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11,14,20,0.98);
            box-shadow: 0 4px 30px rgba(0,0,0,0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
            filter: drop-shadow(0 0 8px rgba(240,165,0,0.4));
        }
        .logo:hover { color: var(--primary); }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-list a i { margin-right: 6px; font-size: 13px; }
        .nav-list a:hover,
        .nav-list a.active {
            color: var(--text-white);
            background: rgba(240,165,0,0.08);
        }
        .nav-list a.active {
            color: var(--primary);
            box-shadow: inset 0 -2px 0 var(--primary);
        }
        .nav-list a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0e14;
            font-weight: 700;
            padding: 8px 22px;
            border-radius: 50px;
            box-shadow: 0 4px 18px rgba(240,165,0,0.3);
            margin-left: 8px;
        }
        .nav-list a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(240,165,0,0.45);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .nav-toggle {
            display: none;
            font-size: 26px;
            color: var(--text-white);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            background: rgba(255,255,255,0.05);
        }
        .nav-toggle:hover { background: rgba(255,255,255,0.1); }

        /* ===== Page Banner ===== */
        .page-banner {
            margin-top: var(--header-h);
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #0f1626 0%, #1a2333 50%, #0b0e14 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(240,165,0,0.06), transparent 70%);
            pointer-events: none;
        }
        .banner-inner {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .banner-inner .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .banner-inner .breadcrumb a { color: var(--text-muted); }
        .banner-inner .breadcrumb a:hover { color: var(--primary); }
        .banner-inner .breadcrumb .sep { color: #4a5568; }
        .banner-inner .breadcrumb .current { color: var(--primary); }
        .banner-inner h1 {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 800;
            max-width: 900px;
            margin: 0 auto 16px;
            line-height: 1.3;
            color: var(--text-white);
        }
        .banner-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--text-muted);
        }
        .banner-meta span { display: flex; align-items: center; gap: 6px; }
        .banner-meta i { color: var(--primary); font-size: 14px; }
        .banner-meta .cat-tag {
            background: rgba(240,165,0,0.15);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }

        /* ===== Article Content ===== */
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
        }
        .article-body .featured-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 32px;
            aspect-ratio: 16/9;
            background: var(--bg-elevated);
        }
        .article-body .featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .article-body .featured-image:hover img { transform: scale(1.02); }
        .article-body .content {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-light);
        }
        .article-body .content p {
            margin-bottom: 20px;
        }
        .article-body .content h2 {
            font-size: 24px;
            margin: 40px 0 16px;
            color: var(--text-white);
        }
        .article-body .content h3 {
            font-size: 20px;
            margin: 32px 0 12px;
            color: var(--text-white);
        }
        .article-body .content ul,
        .article-body .content ol {
            margin: 16px 0 24px;
            padding-left: 24px;
        }
        .article-body .content li {
            margin-bottom: 8px;
            position: relative;
        }
        .article-body .content ul li::before {
            content: '▸';
            color: var(--primary);
            position: absolute;
            left: -18px;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(240,165,0,0.06);
            padding: 20px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-white);
            font-style: italic;
        }
        .article-body .content a {
            color: var(--primary);
            border-bottom: 1px solid transparent;
        }
        .article-body .content a:hover { border-bottom-color: var(--primary); }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content .highlight-box {
            background: var(--bg-elevated);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin: 24px 0;
        }
        .article-body .content .highlight-box h4 { color: var(--primary); margin-bottom: 8px; }

        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
            flex-wrap: wrap;
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            background: var(--bg-elevated);
            border: 1px solid var(--border-color);
            font-size: 14px;
            color: var(--text-light);
            transition: all var(--transition);
            max-width: 45%;
        }
        .article-nav a:hover {
            border-color: var(--primary);
            color: var(--text-white);
            background: rgba(240,165,0,0.06);
            transform: translateY(-2px);
        }
        .article-nav a i { color: var(--primary); font-size: 14px; }
        .article-nav .nav-next { text-align: right; flex-direction: row-reverse; }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card .card-title i { color: var(--primary); font-size: 18px; }
        .sidebar-card .card-title::after {
            content: '';
            flex: 1;
            height: 1px;
            background: linear-gradient(90deg, var(--border-color), transparent);
        }

        .related-list { display: flex; flex-direction: column; gap: 14px; }
        .related-item {
            display: flex;
            gap: 14px;
            padding: 12px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
            cursor: pointer;
        }
        .related-item:hover { background: var(--bg-card-hover); }
        .related-item .thumb {
            width: 70px;
            height: 56px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-elevated);
        }
        .related-item .thumb img { width: 100%; height: 100%; object-fit: cover; }
        .related-item .info h5 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-item .info .date { font-size: 12px; color: var(--text-muted); }
        .related-item .info .date i { margin-right: 4px; }

        .cat-list { display: flex; flex-direction: column; gap: 6px; }
        .cat-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-light);
            transition: all var(--transition);
        }
        .cat-list a:hover {
            background: rgba(240,165,0,0.06);
            color: var(--primary);
            padding-left: 20px;
        }
        .cat-list a i { color: var(--primary); font-size: 12px; opacity: 0.6; }
        .cat-list a .count {
            margin-left: auto;
            background: var(--bg-elevated);
            padding: 0 10px;
            border-radius: 50px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
        .tag-cloud a {
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            background: var(--bg-elevated);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .tag-cloud a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(240,165,0,0.06);
        }

        .sidebar-cta {
            background: linear-gradient(135deg, #1a2333, #0f1626);
            border: 1px solid var(--border-glow);
            text-align: center;
            padding: 32px 24px;
        }
        .sidebar-cta h4 { font-size: 20px; margin-bottom: 8px; color: var(--text-white); }
        .sidebar-cta p { font-size: 14px; color: var(--text-muted); margin-bottom: 20px; }
        .sidebar-cta .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0e14;
            font-weight: 700;
            border-radius: 50px;
            box-shadow: 0 4px 20px rgba(240,165,0,0.25);
            transition: all var(--transition);
        }
        .sidebar-cta .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(240,165,0,0.4);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #080b10;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(42,58,74,0.4);
        }
        .footer-brand .logo { font-size: 22px; margin-bottom: 16px; }
        .footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; max-width: 360px; }
        .footer-social { display: flex; gap: 14px; margin-top: 20px; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 18px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #0b0e14;
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(240,165,0,0.2);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
        }
        .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .footer-col a:hover { color: var(--primary); padding-left: 6px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--primary); }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .not-found-box i { font-size: 64px; color: var(--text-muted); opacity: 0.3; margin-bottom: 20px; }
        .not-found-box h2 { font-size: 28px; margin-bottom: 12px; color: var(--text-white); }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; font-size: 16px; }
        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #0b0e14;
            font-weight: 700;
            border-radius: 50px;
            transition: all var(--transition);
        }
        .not-found-box .btn-back:hover { background: var(--primary-light); transform: translateY(-2px); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(11,14,20,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
                pointer-events: none;
                max-height: calc(100vh - var(--header-h));
                overflow-y: auto;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a { width: 100%; padding: 12px 16px; font-size: 15px; }
            .nav-list a.nav-cta { margin-left: 0; margin-top: 8px; text-align: center; }
            .nav-toggle { display: block; }

            .article-body { padding: 24px 20px; }
            .banner-meta { gap: 14px; font-size: 13px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .article-nav a { max-width: 100%; flex: 1; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .page-banner { padding: 60px 0 40px; }
            .article-body { padding: 16px; border-radius: var(--radius-md); }
            .article-body .featured-image { margin-bottom: 20px; }
            .banner-meta { gap: 10px; font-size: 12px; flex-wrap: wrap; justify-content: center; }
            .sidebar-card { padding: 20px 16px; }
            .related-item .thumb { width: 56px; height: 44px; }
            .logo { font-size: 20px; }
            .logo i { font-size: 22px; }
        }

        /* ===== Utilities ===== */
        .text-primary { color: var(--primary); }
        .text-muted { color: var(--text-muted); }
        .mb-8 { margin-bottom: 8px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .mt-16 { margin-top: 16px; }
        .mt-32 { margin-top: 32px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .gap-16 { gap: 16px; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #f0c040;
            --primary-light: #ffe08a;
            --primary-dark: #c89a20;
            --secondary: #8b5cf6;
            --secondary-light: #a78bfa;
            --accent: #f59e0b;
            --bg-dark: #0b0d17;
            --bg-card: #13172b;
            --bg-card-hover: #1a1f3a;
            --bg-section: #0f1322;
            --bg-section-alt: #0b0d17;
            --text-main: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: #1e2a4a;
            --border-glow: rgba(240, 192, 64, 0.25);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(240, 192, 64, 0.06);
            --shadow-glow: 0 0 30px rgba(240, 192, 64, 0.15);
            --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --header-h: 72px;
            --grid-gap: 28px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-dark);
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== 头部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(11, 13, 23, 0.92);
            backdrop-filter: blur(16px) saturate(1.4);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
            transition: background var(--transition), border-color var(--transition);
        }

        .site-header.scrolled {
            background: rgba(11, 13, 23, 0.97);
            border-bottom-color: var(--primary-dark);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            text-shadow: 0 0 20px rgba(240, 192, 64, 0.25);
            transition: text-shadow var(--transition);
            flex-shrink: 0;
        }
        .logo i {
            font-size: 1.3rem;
            color: var(--primary);
            filter: drop-shadow(0 0 8px rgba(240, 192, 64, 0.4));
        }
        .logo:hover {
            text-shadow: 0 0 32px rgba(240, 192, 64, 0.45);
            color: var(--primary-light);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-xs);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
            background: transparent;
        }
        .nav-list a i {
            font-size: 0.85rem;
            opacity: 0.7;
            transition: opacity var(--transition);
        }
        .nav-list a:hover {
            color: var(--text-main);
            background: rgba(240, 192, 64, 0.07);
        }
        .nav-list a:hover i {
            opacity: 1;
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(240, 192, 64, 0.12);
            box-shadow: inset 0 -2px 0 var(--primary), 0 0 20px rgba(240, 192, 64, 0.08);
            text-shadow: 0 0 12px rgba(240, 192, 64, 0.15);
        }
        .nav-list a.active i {
            opacity: 1;
            color: var(--primary);
        }

        .nav-list a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0d17;
            font-weight: 700;
            padding: 8px 24px;
            border-radius: var(--radius-xs);
            box-shadow: 0 4px 16px rgba(240, 192, 64, 0.25);
            transition: all var(--transition);
            margin-left: 6px;
        }
        .nav-list a.nav-cta i {
            color: #0b0d17;
            opacity: 1;
        }
        .nav-list a.nav-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 28px rgba(240, 192, 64, 0.4);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            color: #0b0d17;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            color: var(--text-main);
            font-size: 1.6rem;
            padding: 6px 10px;
            border-radius: var(--radius-xs);
            cursor: pointer;
            transition: background var(--transition);
            border: 1px solid transparent;
        }
        .nav-toggle:hover {
            background: rgba(240, 192, 64, 0.1);
            color: var(--primary);
        }
        .nav-toggle:focus-visible {
            border-color: var(--primary);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 1024px) {
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(11, 13, 23, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 32px;
                gap: 4px;
                border-bottom: 2px solid var(--border-color);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
                max-height: calc(100vh - var(--header-h));
                overflow-y: auto;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                padding: 14px 20px;
                font-size: 1rem;
                border-radius: var(--radius-xs);
                justify-content: flex-start;
            }
            .nav-list a.nav-cta {
                margin-left: 0;
                margin-top: 12px;
                justify-content: center;
                padding: 14px 20px;
            }
            .nav-toggle {
                display: block;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.2rem;
                gap: 6px;
            }
            .logo i {
                font-size: 1.1rem;
            }
            .nav-list {
                padding: 16px 16px 28px;
            }
            .nav-list a {
                padding: 12px 16px;
                font-size: 0.95rem;
            }
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: 160px 0 100px;
            margin-top: var(--header-h);
            background: var(--bg-dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 13, 23, 0.92) 40%, rgba(11, 13, 23, 0.6) 70%, transparent);
            z-index: 1;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 192, 64, 0.15);
            border: 1px solid rgba(240, 192, 64, 0.25);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
        }
        .category-hero .hero-badge i {
            font-size: 0.75rem;
        }
        .category-hero h1 {
            font-size: 3.4rem;
            font-weight: 900;
            line-height: 1.15;
            color: var(--text-main);
            max-width: 720px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
            letter-spacing: -0.5px;
        }
        .category-hero h1 span {
            color: var(--primary);
            text-shadow: 0 0 40px rgba(240, 192, 64, 0.2);
        }
        .category-hero p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-top: 18px;
            line-height: 1.8;
        }
        .category-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 32px;
        }
        .category-hero .hero-actions .btn {
            padding: 14px 36px;
            border-radius: var(--radius-xs);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
            border: none;
        }
        .category-hero .hero-actions .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0d17;
            box-shadow: 0 6px 24px rgba(240, 192, 64, 0.3);
        }
        .category-hero .hero-actions .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 40px rgba(240, 192, 64, 0.45);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .category-hero .hero-actions .btn-outline {
            background: transparent;
            color: var(--text-main);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(4px);
        }
        .category-hero .hero-actions .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(240, 192, 64, 0.08);
            transform: translateY(-3px);
        }

        @media (max-width: 1024px) {
            .category-hero {
                padding: 140px 0 80px;
            }
            .category-hero h1 {
                font-size: 2.6rem;
            }
            .category-hero p {
                font-size: 1.05rem;
            }
        }
        @media (max-width: 768px) {
            .category-hero {
                padding: 120px 0 64px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 0.95rem;
            }
            .category-hero .hero-actions .btn {
                padding: 12px 24px;
                font-size: 0.92rem;
            }
        }
        @media (max-width: 520px) {
            .category-hero {
                padding: 100px 0 48px;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero .hero-badge {
                font-size: 0.7rem;
                padding: 4px 14px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 90px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-card {
            background: var(--bg-section);
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 2px;
            background: rgba(240, 192, 64, 0.1);
            padding: 4px 16px;
            border-radius: 40px;
            border: 1px solid rgba(240, 192, 64, 0.15);
            margin-bottom: 14px;
        }
        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
            letter-spacing: -0.3px;
        }
        .section-header h2 span {
            color: var(--primary);
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1.08rem;
            max-width: 640px;
            margin: 14px auto 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .section-header {
                margin-bottom: 40px;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .section {
                padding: 44px 0;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--grid-gap);
        }
        .card-grid.col-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid.col-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px 28px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: rgba(240, 192, 64, 0.25);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(240, 192, 64, 0.12);
            background: var(--bg-card-hover);
        }
        .card .card-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 18px;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(240, 192, 64, 0.08);
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .card:hover .card-icon {
            background: rgba(240, 192, 64, 0.15);
        }
        .card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            flex: 1;
        }
        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 18px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            transition: gap var(--transition);
        }
        .card .card-link i {
            transition: transform var(--transition);
            font-size: 0.8rem;
        }
        .card:hover .card-link i {
            transform: translateX(4px);
        }

        /* 带图片的卡片 */
        .card-cover {
            padding: 0;
            overflow: hidden;
            background: var(--bg-card);
        }
        .card-cover .cover-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: var(--radius) var(--radius) 0 0;
            transition: transform 0.5s ease;
        }
        .card-cover:hover .cover-img {
            transform: scale(1.04);
        }
        .card-cover .card-body {
            padding: 24px 28px 28px;
        }
        .card-cover .card-body .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(240, 192, 64, 0.12);
            color: var(--primary);
            border: 1px solid rgba(240, 192, 64, 0.15);
            margin-bottom: 10px;
        }
        .card-cover .card-body h3 {
            font-size: 1.2rem;
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.col-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid.col-2,
            .card-grid.col-4 {
                grid-template-columns: 1fr;
            }
            .card {
                padding: 24px 20px 22px;
            }
            .card-cover .card-body {
                padding: 18px 20px 22px;
            }
        }

        /* ===== 特色亮点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--grid-gap);
        }
        .feature-item {
            text-align: center;
            padding: 28px 16px;
            border-radius: var(--radius);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-4px);
            border-color: rgba(240, 192, 64, 0.2);
            background: var(--bg-card-hover);
        }
        .feature-item .num {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
            text-shadow: 0 0 30px rgba(240, 192, 64, 0.15);
        }
        .feature-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .feature-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-item .num {
                font-size: 2rem;
            }
        }

        /* ===== 图文区块 ===== */
        .media-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .media-block .media-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }
        .media-block .media-image img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .media-block .media-image:hover img {
            transform: scale(1.03);
        }
        .media-block .media-content .label {
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
            display: block;
        }
        .media-block .media-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .media-block .media-content h2 span {
            color: var(--primary);
        }
        .media-block .media-content p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 18px;
        }
        .media-block .media-content .btn {
            padding: 12px 32px;
            border-radius: var(--radius-xs);
            font-weight: 700;
            font-size: 0.95rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0d17;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 4px 16px rgba(240, 192, 64, 0.2);
        }
        .media-block .media-content .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(240, 192, 64, 0.35);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }

        @media (max-width: 1024px) {
            .media-block {
                gap: 40px;
            }
            .media-block .media-content h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            .media-block {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .media-block.reverse {
                direction: ltr;
            }
            .media-block .media-content h2 {
                font-size: 1.4rem;
            }
            .media-block .media-image img {
                aspect-ratio: 16 / 9;
            }
        }

        /* ===== 内容列表 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            cursor: default;
        }
        .content-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(240, 192, 64, 0.15);
            transform: translateX(4px);
        }
        .content-item .item-index {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(240, 192, 64, 0.1);
            border: 1px solid rgba(240, 192, 64, 0.2);
            color: var(--primary);
            font-weight: 800;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .content-item .item-body {
            flex: 1;
        }
        .content-item .item-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .content-item .item-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .content-item .item-arrow {
            color: var(--text-muted);
            font-size: 1.2rem;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .content-item:hover .item-arrow {
            color: var(--primary);
            transform: translateX(4px);
        }

        @media (max-width: 640px) {
            .content-item {
                padding: 16px 18px;
                gap: 14px;
                flex-wrap: wrap;
            }
            .content-item .item-body h4 {
                font-size: 0.95rem;
            }
            .content-item .item-body p {
                font-size: 0.82rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(240, 192, 64, 0.15);
        }
        .faq-item.open {
            border-color: rgba(240, 192, 64, 0.25);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-main);
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            background: rgba(240, 192, 64, 0.04);
        }
        .faq-question .faq-icon {
            font-size: 1rem;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-answer {
                font-size: 0.88rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(240, 192, 64, 0.04), rgba(139, 92, 246, 0.04));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            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: 0.06;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 80px 20px;
        }
        .cta-inner h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }
        .cta-inner h2 span {
            color: var(--primary);
        }
        .cta-inner p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-inner .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta-inner .btn {
            padding: 16px 44px;
            border-radius: var(--radius-xs);
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: none;
            cursor: pointer;
        }
        .cta-inner .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0d17;
            box-shadow: 0 6px 24px rgba(240, 192, 64, 0.25);
        }
        .cta-inner .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 40px rgba(240, 192, 64, 0.4);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .cta-inner .btn-outline-light {
            background: transparent;
            color: var(--text-main);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
        }
        .cta-inner .btn-outline-light:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(240, 192, 64, 0.06);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .cta-inner {
                padding: 56px 20px;
            }
            .cta-inner h2 {
                font-size: 1.8rem;
            }
            .cta-inner p {
                font-size: 0.95rem;
            }
            .cta-inner .btn {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .cta-inner h2 {
                font-size: 1.4rem;
            }
            .cta-inner .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 20px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(240, 192, 64, 0.06);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: rgba(240, 192, 64, 0.12);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: 0.9rem;
            padding: 6px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0 28px;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        .footer-bottom span {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(32px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 实用辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }