/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #1344b0;
            --primary-light: #e8effd;
            --secondary: #7c3aed;
            --secondary-light: #f3eeff;
            --accent: #f59e0b;
            --bg-body: #ffffff;
            --bg-soft: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, 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-primary);
            background: var(--bg-body);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        p { color: var(--text-secondary); margin-bottom: 0.5rem; }

        /* ===== Container ===== */
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 880px; margin: 0 auto; padding: 0 24px; }

        /* ===== Section Spacing ===== */
        .section { padding: 80px 0; }
        .section-sm { padding: 48px 0; }
        .section-lg { padding: 120px 0; }
        .section-title { text-align: center; margin-bottom: 16px; }
        .section-subtitle { text-align: center; color: var(--text-secondary); max-width: 680px; margin: 0 auto 48px; font-size: 1.1rem; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-h); background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226,232,240,0.6);
            transition: var(--transition);
        }
        .site-header .container { display: flex; align-items: center; height: 100%; }
        .logo a { font-size: 1.4rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.5px; display: flex; align-items: center; gap: 8px; }
        .logo a span { color: var(--primary); }
        .logo a i { color: var(--primary); font-size: 1.6rem; }
        .nav-wrap { display: flex; align-items: center; gap: 8px; margin-left: 40px; flex: 1; }
        .nav-wrap a {
            font-size: 0.95rem; font-weight: 500; color: var(--text-secondary);
            padding: 8px 18px; border-radius: var(--radius-sm);
            transition: var(--transition); position: relative;
        }
        .nav-wrap a:hover, .nav-wrap a.active { color: var(--primary); background: var(--primary-light); }
        .nav-wrap a.active { font-weight: 600; }
        .nav-right { display: flex; align-items: center; gap: 16px; margin-left: auto; }
        .search-box {
            display: flex; align-items: center; background: var(--bg-soft);
            border: 1px solid var(--border); border-radius: 100px;
            padding: 0 16px; height: 40px; transition: var(--transition);
        }
        .search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,86,219,0.12); }
        .search-box i { color: var(--text-muted); font-size: 0.9rem; }
        .search-box input { border: none; background: transparent; outline: none; padding: 0 10px; width: 160px; font-size: 0.9rem; color: var(--text-primary); }
        .search-box input::placeholder { color: var(--text-muted); }
        .header-cta {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--primary); color: var(--text-white); font-weight: 600;
            padding: 10px 24px; border-radius: 100px; font-size: 0.9rem;
            transition: var(--transition); border: none; cursor: pointer;
        }
        .header-cta:hover { background: var(--primary-dark); color: var(--text-white); transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .mobile-toggle { display: none; font-size: 1.4rem; color: var(--text-primary); background: none; border: none; cursor: pointer; padding: 8px; }

        /* ===== Hero ===== */
        .hero {
            padding: 160px 0 100px; position: relative; overflow: hidden;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
            min-height: 85vh; 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: 0.25; mix-blend-mode: overlay;
        }
        .hero::after {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26,86,219,0.15) 0%, transparent 70%),
                        radial-gradient(ellipse at 70% 50%, rgba(124,58,237,0.12) 0%, transparent 70%);
        }
        .hero .container { position: relative; z-index: 2; text-align: center; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(255,255,255,0.08); color: var(--text-white);
            padding: 6px 20px; border-radius: 100px; font-size: 0.85rem;
            border: 1px solid rgba(255,255,255,0.10); margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero-badge i { color: var(--accent); }
        .hero h1 { color: var(--text-white); font-size: clamp(2.4rem, 6vw, 4rem); font-weight: 800; letter-spacing: -1.5px; line-height: 1.15; margin-bottom: 20px; }
        .hero h1 span { background: linear-gradient(135deg, #60a5fa, #a78bfa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p { color: rgba(255,255,255,0.7); font-size: 1.15rem; max-width: 640px; margin: 0 auto 36px; line-height: 1.8; }
        .hero-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
        .hero-actions .btn-primary {
            background: var(--primary); color: var(--text-white); font-weight: 600;
            padding: 16px 36px; border-radius: 100px; font-size: 1.05rem;
            transition: var(--transition); border: none; cursor: pointer; display: inline-flex; align-items: center; gap: 10px;
        }
        .hero-actions .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
        .hero-actions .btn-outline {
            background: transparent; color: var(--text-white); font-weight: 500;
            padding: 16px 36px; border-radius: 100px; font-size: 1.05rem;
            border: 1.5px solid rgba(255,255,255,0.25); transition: var(--transition);
            display: inline-flex; align-items: center; gap: 10px;
        }
        .hero-actions .btn-outline:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.4); transform: translateY(-2px); }
        .hero-stats { display: flex; justify-content: center; gap: 48px; margin-top: 56px; flex-wrap: wrap; }
        .hero-stat { text-align: center; }
        .hero-stat .num { font-size: 2.2rem; font-weight: 800; color: var(--text-white); }
        .hero-stat .label { color: rgba(255,255,255,0.5); font-size: 0.9rem; }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); border: 1px solid var(--border);
            padding: 28px 24px; transition: var(--transition);
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .card-icon { width: 56px; height: 56px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1.6rem; margin-bottom: 18px; }
        .card-icon.blue { background: var(--primary-light); color: var(--primary); }
        .card-icon.purple { background: var(--secondary-light); color: var(--secondary); }
        .card-icon.amber { background: #fef3c7; color: #d97706; }
        .card h3 { font-size: 1.2rem; margin-bottom: 10px; }
        .card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }
        .card-link { margin-top: 16px; display: inline-flex; align-items: center; gap: 6px; font-weight: 500; font-size: 0.95rem; color: var(--primary); }
        .card-link:hover { gap: 10px; }

        /* ===== Feature Grid ===== */
        .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .feature-card { text-align: center; padding: 40px 28px; }
        .feature-card .card-icon { margin: 0 auto 20px; }

        /* ===== Category Entry ===== */
        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .category-card {
            display: flex; align-items: center; gap: 24px;
            background: var(--bg-card); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); border: 1px solid var(--border);
            padding: 24px; transition: var(--transition); overflow: hidden;
        }
        .category-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .category-card img { width: 120px; height: 90px; object-fit: cover; border-radius: var(--radius-sm); flex-shrink: 0; }
        .category-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
        .category-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 8px; }
        .category-card .tag { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 0.75rem; padding: 2px 12px; border-radius: 100px; font-weight: 500; }

        /* ===== Content / Post List ===== */
        .post-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .post-card { border-radius: var(--radius-md); overflow: hidden; background: var(--bg-card); box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: var(--transition); }
        .post-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .post-card img { width: 100%; height: 200px; object-fit: cover; }
        .post-card-body { padding: 20px 22px 24px; }
        .post-card-body .meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; }
        .post-card-body .meta .cat { background: var(--primary-light); color: var(--primary); padding: 2px 12px; border-radius: 100px; font-weight: 500; }
        .post-card-body h3 { font-size: 1.05rem; margin-bottom: 8px; line-height: 1.4; }
        .post-card-body h3 a { color: var(--text-primary); }
        .post-card-body h3 a:hover { color: var(--primary); }
        .post-card-body p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }

        /* ===== Numbers / Stats ===== */
        .numbers-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; text-align: center; }
        .number-item { padding: 32px 16px; }
        .number-item .num { font-size: 2.6rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .number-item .num span { font-size: 1.4rem; font-weight: 400; color: var(--text-muted); }
        .number-item .label { color: var(--text-secondary); font-size: 0.95rem; margin-top: 6px; }

        /* ===== Steps ===== */
        .steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: step; }
        .step-card { text-align: center; padding: 36px 24px; position: relative; }
        .step-card::before { counter-increment: step; content: "0" counter(step); position: absolute; top: 16px; left: 24px; font-size: 3rem; font-weight: 800; color: rgba(26,86,219,0.06); line-height: 1; }
        .step-card .step-num { width: 48px; height: 48px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; font-weight: 700; margin: 0 auto 18px; }
        .step-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .step-card p { font-size: 0.9rem; color: var(--text-secondary); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; cursor: pointer; }
        .faq-item:first-child { border-top: 1px solid var(--border); }
        .faq-question { display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1.05rem; color: var(--text-primary); }
        .faq-question i { color: var(--text-muted); transition: var(--transition); font-size: 1.1rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer { padding-top: 12px; display: none; color: var(--text-secondary); line-height: 1.7; font-size: 0.95rem; }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            padding: 80px 0; text-align: center; position: relative; overflow: hidden;
        }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.10; }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: var(--text-white); font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.65); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-section .btn-cta {
            display: inline-flex; align-items: center; gap: 10px;
            background: var(--primary); color: var(--text-white); font-weight: 600;
            padding: 18px 44px; border-radius: 100px; font-size: 1.1rem;
            transition: var(--transition); border: none; cursor: pointer;
        }
        .cta-section .btn-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }

        /* ===== Footer ===== */
        .site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 56px 0 32px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand .logo a { color: var(--text-white); font-size: 1.3rem; }
        .footer-brand p { color: rgba(255,255,255,0.5); font-size: 0.9rem; margin-top: 12px; line-height: 1.7; max-width: 300px; }
        .footer-col h4 { color: var(--text-white); font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; }
        .footer-col a { display: block; color: rgba(255,255,255,0.55); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--text-white); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); margin-top: 40px; padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.35); }

        /* ===== Empty State ===== */
        .empty-state { text-align: center; padding: 60px 24px; color: var(--text-muted); }
        .empty-state i { font-size: 3rem; margin-bottom: 16px; display: block; }
        .empty-state p { font-size: 1.05rem; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .post-list { grid-template-columns: repeat(2, 1fr); }
            .numbers-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-lg { padding: 80px 0; }
            .hero { padding: 120px 0 64px; min-height: auto; }
            .hero h1 { font-size: clamp(1.8rem, 5vw, 2.4rem); }
            .hero p { font-size: 1rem; }
            .feature-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .post-list { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .numbers-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .nav-wrap { display: none; }
            .nav-right .search-box { display: none; }
            .mobile-toggle { display: block; }
            .nav-wrap.mobile-open { display: flex; flex-direction: column; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); padding: 20px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); }
            .nav-wrap.mobile-open a { width: 100%; padding: 12px 16px; }
            .nav-right .header-cta { padding: 10px 18px; font-size: 0.85rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 1.6rem; }
            .category-card { flex-direction: column; text-align: center; }
            .category-card img { width: 100%; height: 160px; }
            .faq-question { font-size: 0.95rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-actions { flex-direction: column; align-items: center; }
            .hero-actions .btn-primary, .hero-actions .btn-outline { width: 100%; justify-content: center; }
            .numbers-grid { grid-template-columns: 1fr; }
            .post-card img { height: 160px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .bg-soft { background: var(--bg-soft); }
        .bg-dark { background: var(--bg-dark); }
        .rounded-full { border-radius: 100px; }
        .shadow-hover:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a4d8c;
            --primary-light: #2a6bb8;
            --primary-dark: #0f2f5a;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-body: #f7f9fc;
            --bg-white: #ffffff;
            --bg-light: #eef2f7;
            --bg-dark: #0f1a2e;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-muted: #8a9aaa;
            --text-white: #f0f4f8;
            --border: #dce2ea;
            --border-light: #e8edf3;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.08);
            --shadow-accent: 0 6px 24px rgba(232, 168, 56, 0.25);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        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;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--primary);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            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;
            line-height: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--text-primary);
            font-weight: 600;
        }
        h1 {
            font-size: 2.6rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Foundation 覆写 ===== */
        .grid-container {
            max-width: var(--container-max);
            padding: 0 24px;
        }
        .grid-x {
            margin: 0 -12px;
        }
        .cell {
            padding: 12px;
        }
        .accordion {
            background: transparent;
            border: none;
            border-radius: var(--radius);
        }
        .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--bg-white);
            transition: box-shadow var(--transition);
        }
        .accordion-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .accordion-title {
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-primary);
            padding: 18px 24px;
            background: var(--bg-white);
            border-bottom: 1px solid transparent;
            transition: background var(--transition), color var(--transition);
        }
        .accordion-title:hover,
        .accordion-title:focus {
            background: var(--bg-light);
            color: var(--primary);
        }
        .accordion-title::before {
            font-size: 1.2rem;
            color: var(--accent);
            right: 20px;
            top: 18px;
        }
        .accordion-content {
            padding: 20px 24px;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .tabs {
            border: none;
            background: transparent;
        }
        .tabs-title {
            margin: 0 4px;
        }
        .tabs-title a {
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-light);
            border: 1px solid transparent;
            transition: all var(--transition);
        }
        .tabs-title a:hover {
            background: var(--border);
            color: var(--text-primary);
        }
        .tabs-title.is-active a {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(26, 77, 140, 0.25);
        }
        .tabs-content {
            border: none;
            background: transparent;
            padding: 20px 0 0;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .header-left {
            display: flex;
            align-items: center;
            gap: 40px;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
        }
        .logo a i.fa-fish {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo a span {
            color: var(--primary);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-wrap a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            text-decoration: none;
            position: relative;
        }
        .nav-wrap a:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .nav-wrap a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(26, 77, 140, 0.2);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            padding: 0 16px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            min-width: 200px;
        }
        .search-box:focus-within {
            border-color: var(--primary-light);
            background: var(--bg-white);
            box-shadow: 0 0 0 4px rgba(26, 77, 140, 0.08);
        }
        .search-box input {
            background: transparent;
            border: none;
            padding: 10px 8px;
            font-size: 0.9rem;
            color: var(--text-primary);
            width: 100%;
            min-width: 120px;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box button {
            color: var(--text-muted);
            padding: 6px;
            font-size: 1rem;
            transition: color var(--transition);
        }
        .search-box button:hover {
            color: var(--primary);
        }
        .header-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #1a1a1a;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            box-shadow: var(--shadow-accent);
            border: none;
            white-space: nowrap;
        }
        .header-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 168, 56, 0.35);
            color: #1a1a1a;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text-primary);
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative;
            padding: 80px 0 60px;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-body), transparent);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            color: var(--text-white);
            font-size: 2.8rem;
            margin-bottom: 12px;
            font-weight: 700;
        }
        .page-hero p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.15rem;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .hero-search {
            display: flex;
            max-width: 520px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 4px 4px 4px 20px;
            align-items: center;
        }
        .hero-search input {
            flex: 1;
            background: transparent;
            border: none;
            padding: 14px 8px;
            font-size: 1rem;
            color: #fff;
            min-width: 0;
        }
        .hero-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .hero-search button {
            background: var(--accent);
            color: #1a1a1a;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: none;
            white-space: nowrap;
        }
        .hero-search button:hover {
            background: var(--accent-light);
            transform: scale(1.02);
        }

        /* ===== 分类标签导航 ===== */
        .category-tabs {
            padding: 32px 0 8px;
            background: var(--bg-body);
        }
        .category-tabs .tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
        }

        /* ===== 通用板块样式 ===== */
        .section {
            padding: 60px 0;
        }
        .section-bg-light {
            background: var(--bg-light);
        }
        .section-bg-white {
            background: var(--bg-white);
        }
        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
            margin-bottom: 12px;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            max-width: 600px;
            margin: 0 auto;
            color: var(--text-muted);
            font-size: 1.05rem;
        }

        /* ===== 指南卡片 ===== */
        .guide-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: var(--border);
        }
        .guide-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .guide-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 500;
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .guide-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .guide-card h3 a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        .guide-card h3 a:hover {
            color: var(--primary);
        }
        .guide-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            flex: 1;
            margin-bottom: 16px;
        }
        .guide-card .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .guide-card .card-meta i {
            margin-right: 4px;
        }
        .guide-card .card-link {
            color: var(--primary);
            font-weight: 500;
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .guide-card .card-link:hover {
            color: var(--accent-dark);
        }

        /* ===== 步骤流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 28px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            counter-increment: step;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-item::before {
            content: counter(step);
            position: absolute;
            top: -16px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(26, 77, 140, 0.2);
        }
        .step-item .step-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 16px;
            margin-top: 8px;
        }
        .step-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ===== 功能特性 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .feature-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .feature-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            border-color: var(--border);
        }
        .feature-item .fi-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
        }
        .feature-item h4 {
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .feature-item p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section .accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.15rem;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .cta-btn {
            display: inline-block;
            background: var(--accent);
            color: #1a1a1a;
            padding: 14px 42px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: var(--shadow-accent);
            border: none;
        }
        .cta-section .cta-btn:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(232, 168, 56, 0.35);
            color: #1a1a1a;
        }

        /* ===== 相关内容 ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 24px;
        }
        .site-footer .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo a {
            color: var(--text-white);
            font-size: 1.3rem;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand .logo a i.fa-fish {
            color: var(--accent);
        }
        .footer-brand .logo a span {
            color: var(--accent);
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            margin-top: 12px;
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-col a i {
            width: 20px;
            margin-right: 4px;
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            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, 0.35);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            .nav-wrap {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow);
            }
            .nav-wrap.open {
                display: flex;
            }
            .nav-wrap a {
                width: 100%;
                text-align: center;
                padding: 12px;
            }
            .mobile-toggle {
                display: block;
            }
            .search-box {
                min-width: 140px;
            }
            .search-box input {
                min-width: 80px;
            }
            .header-cta {
                display: none;
            }
            .page-hero {
                padding: 60px 0 48px;
                min-height: 260px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .hero-search {
                flex-direction: column;
                background: transparent;
                border: none;
                padding: 0;
                gap: 12px;
            }
            .hero-search input {
                background: rgba(255, 255, 255, 0.12);
                border-radius: 50px;
                padding: 14px 20px;
                width: 100%;
                border: 1px solid rgba(255, 255, 255, 0.15);
            }
            .hero-search button {
                width: 100%;
                padding: 14px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .tabs-title a {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .category-tabs .tabs {
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .guide-card .card-img {
                height: 160px;
            }
            .header-right .search-box {
                min-width: 100px;
            }
            .search-box input {
                min-width: 60px;
                font-size: 0.85rem;
            }
            .feature-item {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .header-right .search-box {
                min-width: 80px;
            }
            .search-box input {
                min-width: 50px;
                padding: 8px 4px;
                font-size: 0.8rem;
            }
            .search-box {
                padding: 0 10px;
            }
            .logo a {
                font-size: 1.1rem;
            }
            .logo a i.fa-fish {
                font-size: 1.2rem;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9e;
            --primary-dark: #0f2444;
            --secondary: #e8a84c;
            --secondary-light: #f0c07a;
            --secondary-dark: #c98a2e;
            --accent: #3b8fc2;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-section: #eef2f7;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-muted: #8a9aaa;
            --text-light: #f0f4f8;
            --border-color: #dce2ec;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 28px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-light); }
        a:focus-visible { outline: 3px solid var(--secondary); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: 2.2rem; }
        h2 { font-size: 1.8rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; width: 100%; }

        /* ===== 重置 Foundation 默认 ===== */
        .grid-container { max-width: var(--container-max); padding-left: 20px; padding-right: 20px; }
        .grid-x { margin-left: -10px; margin-right: -10px; }
        .cell { padding-left: 10px; padding-right: 10px; }
        .button { transition: all var(--transition); }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }
        .logo {
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }
        .logo a {
            display: flex;
            align-items: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            gap: 6px;
        }
        .logo a i { color: var(--secondary); font-size: 1.6rem; }
        .logo a span { color: var(--secondary); }
        .logo a:hover { color: var(--primary-dark); }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-wrap a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-wrap a:hover { color: var(--primary); background: rgba(26,58,107,0.05); }
        .nav-wrap a.active {
            color: var(--primary);
            background: rgba(26,58,107,0.08);
            font-weight: 600;
        }
        .nav-wrap a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--secondary);
            border-radius: 4px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: 40px;
            padding: 0 14px;
            transition: all var(--transition);
        }
        .search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,58,107,0.08); }
        .search-box i { color: var(--text-muted); font-size: 0.9rem; }
        .search-box input {
            border: none;
            background: transparent;
            padding: 8px 10px;
            font-size: 0.9rem;
            width: 160px;
            outline: none;
            color: var(--text-primary);
        }
        .search-box input::placeholder { color: var(--text-muted); }
        .btn-cta {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #1a1a1a !important;
            padding: 10px 26px !important;
            border-radius: 40px !important;
            font-weight: 700 !important;
            font-size: 0.9rem !important;
            border: none;
            box-shadow: 0 4px 14px rgba(232,168,76,0.35);
            transition: all var(--transition) !important;
            white-space: nowrap;
        }
        .btn-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,168,76,0.45); color: #1a1a1a !important; }
        .btn-cta:active { transform: translateY(0); }
        .mobile-toggle { display: none; font-size: 1.5rem; color: var(--primary); cursor: pointer; background: none; border: none; padding: 6px; }

        /* ===== Article Hero ===== */
        .article-hero {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-hero .container { position: relative; z-index: 1; }
        .article-hero h1 {
            color: var(--text-light);
            font-size: 2.4rem;
            font-weight: 800;
            max-width: 800px;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .article-meta i { margin-right: 6px; color: var(--secondary); }
        .article-meta .category-tag {
            background: var(--secondary);
            color: #1a1a1a;
            padding: 4px 14px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.8rem;
        }

        /* ===== Article Body ===== */
        .article-main { padding: 50px 0 70px; }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 50px 56px;
            border: 1px solid var(--border-color);
        }
        .article-content h2 { margin-top: 2.2rem; margin-bottom: 1rem; font-size: 1.6rem; }
        .article-content h3 { margin-top: 1.8rem; margin-bottom: 0.8rem; font-size: 1.25rem; }
        .article-content p { margin-bottom: 1.2rem; font-size: 1.05rem; line-height: 1.8; color: var(--text-secondary); }
        .article-content ul, .article-content ol { margin-bottom: 1.4rem; padding-left: 1.6rem; list-style: disc; }
        .article-content li { margin-bottom: 0.4rem; font-size: 1.05rem; color: var(--text-secondary); line-height: 1.7; }
        .article-content img { margin: 1.8rem 0; border-radius: var(--radius-md); box-shadow: var(--shadow-md); }
        .article-content blockquote {
            border-left: 4px solid var(--secondary);
            background: var(--bg-section);
            padding: 16px 24px;
            margin: 1.6rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content a { color: var(--primary-light); font-weight: 500; text-decoration: underline; text-underline-offset: 3px; }
        .article-content a:hover { color: var(--secondary-dark); }
        .article-divider { border: none; border-top: 2px solid var(--border-color); margin: 2.4rem 0; }

        /* ===== Article Sidebar ===== */
        .sidebar-widget {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
        }
        .sidebar-widget h4 { font-size: 1.1rem; margin-bottom: 16px; color: var(--primary); display: flex; align-items: center; gap: 8px; }
        .sidebar-widget h4 i { color: var(--secondary); }
        .sidebar-list li { border-bottom: 1px solid var(--border-color); padding: 10px 0; }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a { color: var(--text-secondary); font-size: 0.95rem; display: block; transition: all var(--transition); }
        .sidebar-list a:hover { color: var(--primary); padding-left: 4px; }
        .sidebar-tags { display: flex; flex-wrap: wrap; gap: 8px; }
        .sidebar-tags a {
            background: var(--bg-section);
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .sidebar-tags a:hover { background: var(--secondary); color: #1a1a1a; border-color: var(--secondary); }
        .sidebar-cta-box {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: var(--text-light);
            padding: 28px 24px;
            border-radius: var(--radius-md);
            text-align: center;
        }
        .sidebar-cta-box h4 { color: var(--text-light); justify-content: center; }
        .sidebar-cta-box p { color: rgba(255,255,255,0.8); font-size: 0.92rem; margin-bottom: 18px; }
        .sidebar-cta-box .button { background: var(--secondary); color: #1a1a1a; font-weight: 700; border-radius: 40px; padding: 12px 28px; }
        .sidebar-cta-box .button:hover { background: var(--secondary-light); transform: translateY(-2px); }

        /* ===== 文章未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .not-found-box i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-box h2 { color: var(--text-primary); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
        .not-found-box .button { background: var(--primary); color: #fff; border-radius: 40px; padding: 12px 32px; }
        .not-found-box .button:hover { background: var(--primary-light); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.75);
            padding: 56px 0 30px;
            border-top: 4px solid var(--secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .logo a { color: var(--text-light); font-size: 1.3rem; }
        .footer-brand .logo a i { color: var(--secondary); }
        .footer-brand .logo a span { color: var(--secondary); }
        .footer-brand p { color: rgba(255,255,255,0.6); font-size: 0.92rem; margin-top: 12px; max-width: 300px; line-height: 1.7; }
        .footer-col h4 { color: var(--text-light); font-size: 1rem; margin-bottom: 16px; font-weight: 600; letter-spacing: 0.5px; }
        .footer-col a { display: block; color: rgba(255,255,255,0.6); font-size: 0.9rem; padding: 4px 0; transition: all var(--transition); }
        .footer-col a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-col a i { width: 20px; margin-right: 6px; color: var(--secondary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom span:last-child { font-size: 0.8rem; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-content { padding: 36px 32px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
        }
        @media (max-width: 768px) {
            :root { --nav-height: 64px; }
            .nav-wrap { display: none; }
            .nav-wrap.mobile-open { display: flex; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--bg-card); border-bottom: 2px solid var(--border-color); padding: 16px 20px; box-shadow: var(--shadow-lg); gap: 4px; }
            .nav-wrap.mobile-open a { padding: 12px 16px; border-radius: var(--radius-sm); width: 100%; }
            .nav-wrap.mobile-open a.active::after { display: none; }
            .mobile-toggle { display: block; }
            .search-box input { width: 100px; }
            .btn-cta { padding: 8px 18px !important; font-size: 0.8rem !important; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-main .grid-x > .cell:first-child { order: 2; }
            .article-main .grid-x > .cell:last-child { order: 1; }
            .article-content { padding: 24px 18px; }
            .article-content h2 { font-size: 1.3rem; }
            .article-content p { font-size: 1rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .header-actions .search-box { display: none; }
            .article-hero { padding: 36px 0 30px; }
            .article-hero h1 { font-size: 1.3rem; }
            .article-meta { font-size: 0.8rem; gap: 10px; }
            .article-content { padding: 18px 14px; }
            .article-content h2 { font-size: 1.15rem; }
            .article-content p { font-size: 0.95rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 20px; }
            .sidebar-widget { padding: 20px 16px; }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-2 { margin-top: 2rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-1 { gap: 1rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }