/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #d4a853;
            --primary-dark: #b8922e;
            --primary-light: #e8c86a;
            --accent: #c0392b;
            --accent-dark: #a93226;
            --bg-dark: #0a0a0f;
            --bg-card: #141420;
            --bg-card-hover: #1c1c30;
            --bg-section: #0f0f1a;
            --bg-soft: #1a1a2e;
            --text-primary: #f5f0e8;
            --text-secondary: #c8c0b0;
            --text-muted: #8a8478;
            --border-color: #2a2a40;
            --border-light: #3a3a50;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --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(0,0,0,0.5);
            --shadow-glow: 0 0 30px rgba(212,168,83,0.15);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-display: 'Georgia', 'Times New Roman', serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
            --tab-height: 64px;
        }

        /* ===== 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);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            padding-bottom: var(--tab-height);
        }
        @media (min-width: 769px) { body { padding-bottom: 0; } }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        h1 { font-family: var(--font-display); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 640px) { .container { padding: 0 16px; } }
        .section-padding { padding: 80px 0; }
        @media (max-width: 768px) { .section-padding { padding: 48px 0; } }
        .section-title {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        @media (max-width: 640px) {
            .section-title { font-size: 1.6rem; }
            .section-subtitle { font-size: 0.95rem; margin-bottom: 32px; }
        }
        .gold-line {
            width: 60px; height: 3px; background: var(--primary);
            margin: 16px auto 24px; border-radius: 2px;
        }
        .btn {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 36px; border-radius: 50px;
            font-weight: 600; font-size: 1rem; letter-spacing: 0.5px;
            border: none; cursor: pointer; transition: var(--transition);
            text-decoration: none; line-height: 1.2;
        }
        .btn-primary {
            background: var(--primary); color: #0a0a0f;
        }
        .btn-primary:hover { background: var(--primary-light); color: #0a0a0f; transform: translateY(-2px); box-shadow: var(--shadow-glow); }
        .btn-outline {
            background: transparent; color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #0a0a0f; transform: translateY(-2px); }
        .btn-accent {
            background: var(--accent); color: #fff;
        }
        .btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(192,57,43,0.3); }
        .btn-lg { padding: 18px 48px; font-size: 1.1rem; }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }
        @media (max-width: 640px) { .btn { padding: 12px 28px; font-size: 0.9rem; } .btn-lg { padding: 14px 36px; font-size: 1rem; } }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0;
            z-index: 1000; height: var(--header-height);
            background: rgba(10,10,15,0.85);
            backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(212,168,83,0.08);
            transition: var(--transition);
        }
        .header.scrolled { background: rgba(10,10,15,0.95); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .logo {
            font-family: var(--font-display); font-size: 1.6rem; font-weight: 700;
            color: var(--primary); letter-spacing: 2px;
            display: flex; align-items: center; gap: 8px;
        }
        .logo i { font-size: 1.4rem; color: var(--primary); }
        .logo:hover { color: var(--primary-light); }
        .nav-desktop { display: flex; align-items: center; gap: 36px; }
        .nav-desktop a {
            color: var(--text-secondary); font-size: 0.95rem; font-weight: 500;
            position: relative; padding: 4px 0; letter-spacing: 0.3px;
        }
        .nav-desktop a::after {
            content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
            background: var(--primary); transition: var(--transition);
            border-radius: 2px;
        }
        .nav-desktop a:hover { color: var(--text-primary); }
        .nav-desktop a:hover::after { width: 100%; }
        .nav-desktop a.active { color: var(--primary); }
        .nav-desktop a.active::after { width: 100%; }
        @media (max-width: 768px) { .nav-desktop { display: none; } }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-tab {
            position: fixed; bottom: 0; left: 0; right: 0;
            height: var(--tab-height); z-index: 1000;
            background: rgba(10,10,15,0.95);
            backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid rgba(212,168,83,0.1);
            display: flex; align-items: center; justify-content: space-around;
            padding: 0 8px;
        }
        @media (min-width: 769px) { .mobile-tab { display: none; } }
        .tab-item {
            display: flex; flex-direction: column; align-items: center;
            gap: 2px; padding: 6px 12px; border-radius: var(--radius-sm);
            color: var(--text-muted); font-size: 0.7rem; font-weight: 500;
            transition: var(--transition); cursor: pointer; text-decoration: none;
            min-width: 64px;
        }
        .tab-item i { font-size: 1.3rem; transition: var(--transition); }
        .tab-item span { line-height: 1.2; }
        .tab-item:hover { color: var(--text-secondary); }
        .tab-item.active { color: var(--primary); }
        .tab-item.active i { transform: scale(1.05); }
        .tab-brand {
            font-family: var(--font-display); font-size: 1.1rem; font-weight: 700;
            color: var(--primary); letter-spacing: 1px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 100vh;
            display: flex; align-items: center; justify-content: center;
            text-align: center; padding: 120px 24px 80px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg { transform: scale(1); }
        .hero-overlay {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(10,10,15,0.88) 0%, rgba(10,10,15,0.6) 50%, rgba(10,10,15,0.85) 100%);
        }
        .hero-glow {
            position: absolute; top: -20%; left: -20%; width: 140%; height: 140%;
            background: radial-gradient(ellipse at 50% 50%, rgba(212,168,83,0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-content { position: relative; z-index: 2; max-width: 820px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 6px 20px; border-radius: 50px;
            background: rgba(212,168,83,0.12); border: 1px solid rgba(212,168,83,0.2);
            color: var(--primary); font-size: 0.85rem; font-weight: 500;
            margin-bottom: 24px; letter-spacing: 1px;
        }
        .hero-title {
            font-size: 4.2rem; font-weight: 700; letter-spacing: 2px;
            line-height: 1.15; margin-bottom: 20px;
            background: linear-gradient(135deg, #f5f0e8 0%, #d4a853 50%, #f5f0e8 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 1.25rem; color: var(--text-secondary);
            max-width: 600px; margin: 0 auto 36px; line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .hero-scroll {
            position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
            z-index: 2; color: var(--text-muted); font-size: 1.4rem;
            animation: bounce 2s infinite; cursor: pointer;
        }
        @keyframes bounce { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }
        @media (max-width: 768px) {
            .hero { min-height: 90vh; padding: 100px 16px 60px; }
            .hero-title { font-size: 2.6rem; }
            .hero-sub { font-size: 1rem; }
            .hero-badge { font-size: 0.75rem; padding: 4px 14px; }
        }
        @media (max-width: 480px) {
            .hero-title { font-size: 2rem; }
            .hero-actions { flex-direction: column; align-items: center; }
        }

        /* ===== Intro Section ===== */
        .intro-section {
            background: var(--bg-section);
            position: relative;
        }
        .intro-grid {
            display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg); overflow: hidden;
            box-shadow: var(--shadow-lg); position: relative;
        }
        .intro-image img { width: 100%; height: 420px; object-fit: cover; transition: var(--transition); }
        .intro-image:hover img { transform: scale(1.03); }
        .intro-content h2 { font-size: 2rem; margin-bottom: 16px; }
        .intro-content p { color: var(--text-secondary); margin-bottom: 16px; font-size: 1.05rem; line-height: 1.8; }
        .intro-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
        .intro-tags span {
            padding: 4px 16px; border-radius: 50px;
            background: rgba(212,168,83,0.1); border: 1px solid rgba(212,168,83,0.15);
            color: var(--primary); font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-image img { height: 260px; }
            .intro-content h2 { font-size: 1.5rem; }
        }

        /* ===== Features Section ===== */
        .features-section {
            background: var(--bg-dark);
        }
        .features-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
        }
        .feature-card {
            background: var(--bg-card); border: 1px solid var(--border-color);
            border-radius: var(--radius-md); padding: 36px 28px;
            transition: var(--transition); text-align: center;
        }
        .feature-card:hover { background: var(--bg-card-hover); border-color: var(--border-light); transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .feature-icon {
            width: 64px; height: 64px; border-radius: 50%;
            background: rgba(212,168,83,0.1); border: 1px solid rgba(212,168,83,0.2);
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 20px; font-size: 1.6rem; color: var(--primary);
        }
        .feature-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
        .feature-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }
        @media (max-width: 768px) { .features-grid { grid-template-columns: 1fr 1fr; gap: 20px; } }
        @media (max-width: 480px) { .features-grid { grid-template-columns: 1fr; } }

        /* ===== Category Entry ===== */
        .category-section {
            background: var(--bg-section);
        }
        .category-card {
            background: var(--bg-card); border: 1px solid var(--border-color);
            border-radius: var(--radius-lg); overflow: hidden;
            display: flex; flex-direction: row; align-items: stretch;
            transition: var(--transition);
        }
        .category-card:hover { border-color: var(--border-light); box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .category-img {
            flex: 0 0 320px; overflow: hidden; position: relative;
        }
        .category-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .category-card:hover .category-img img { transform: scale(1.05); }
        .category-body {
            flex: 1; padding: 36px 32px; display: flex; flex-direction: column; justify-content: center;
        }
        .category-body h3 { font-size: 1.6rem; margin-bottom: 12px; }
        .category-body p { color: var(--text-secondary); margin-bottom: 20px; line-height: 1.7; }
        .category-meta { display: flex; gap: 16px; color: var(--text-muted); font-size: 0.85rem; margin-bottom: 16px; }
        .category-meta i { margin-right: 4px; }
        @media (max-width: 768px) { .category-card { flex-direction: column; } .category-img { flex: 0 0 200px; } }
        @media (max-width: 480px) { .category-body { padding: 24px 20px; } .category-body h3 { font-size: 1.3rem; } }

        /* ===== Latest Posts ===== */
        .posts-section {
            background: var(--bg-dark);
        }
        .posts-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
        }
        .post-card {
            background: var(--bg-card); border: 1px solid var(--border-color);
            border-radius: var(--radius-md); overflow: hidden;
            transition: var(--transition);
        }
        .post-card:hover { background: var(--bg-card-hover); border-color: var(--border-light); transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .post-card-img {
            height: 180px; overflow: hidden; position: relative;
        }
        .post-card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .post-card:hover .post-card-img img { transform: scale(1.05); }
        .post-card-img .post-tag {
            position: absolute; top: 12px; left: 12px;
            padding: 4px 14px; border-radius: 50px;
            background: rgba(212,168,83,0.9); color: #0a0a0f;
            font-size: 0.75rem; font-weight: 600;
        }
        .post-card-body { padding: 20px 20px 24px; }
        .post-card-body h4 { font-size: 1.05rem; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-card-body p { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-card-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; font-size: 0.8rem; color: var(--text-muted); }
        .post-card-meta i { margin-right: 4px; }
        .posts-empty {
            grid-column: 1 / -1; text-align: center; padding: 48px 24px;
            background: var(--bg-card); border-radius: var(--radius-md);
            border: 1px dashed var(--border-color); color: var(--text-muted);
        }
        @media (max-width: 768px) { .posts-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 480px) { .posts-grid { grid-template-columns: 1fr; } }

        /* ===== Stats Section ===== */
        .stats-section {
            background: var(--bg-section);
            position: relative;
        }
        .stats-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
        }
        .stat-item {
            text-align: center; padding: 32px 16px;
            background: var(--bg-card); border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }
        .stat-number {
            font-size: 2.8rem; font-weight: 700; color: var(--primary);
            font-family: var(--font-display); line-height: 1.2;
        }
        .stat-label { color: var(--text-muted); font-size: 0.9rem; margin-top: 6px; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; } .stat-number { font-size: 2rem; } }

        /* ===== How It Works ===== */
        .steps-section {
            background: var(--bg-dark);
        }
        .steps-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
            position: relative;
        }
        .steps-grid::before {
            content: ''; position: absolute; top: 48px; left: 15%; right: 15%;
            height: 2px; background: linear-gradient(to right, var(--primary), rgba(212,168,83,0.2));
            z-index: 0;
        }
        .step-card {
            text-align: center; position: relative; z-index: 1;
            padding: 0 12px;
        }
        .step-number {
            width: 56px; height: 56px; border-radius: 50%;
            background: var(--primary); color: #0a0a0f;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.4rem; font-weight: 700; margin: 0 auto 20px;
            font-family: var(--font-display);
        }
        .step-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
        .step-card p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.7; }
        @media (max-width: 768px) {
            .steps-grid { grid-template-columns: 1fr; gap: 28px; }
            .steps-grid::before { display: none; }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-section);
        }
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card); border: 1px solid var(--border-color);
            border-radius: var(--radius-sm); margin-bottom: 12px;
            overflow: hidden; transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-light); }
        .faq-question {
            padding: 18px 24px; display: flex; justify-content: space-between;
            align-items: center; cursor: pointer; font-weight: 600;
            font-size: 1rem; color: var(--text-primary);
            transition: var(--transition); user-select: none;
        }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 1.1rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: var(--transition);
            padding: 0 24px; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7;
        }
        .faq-item.active .faq-answer { max-height: 300px; padding: 0 24px 20px; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            text-align: center; padding: 80px 24px;
            position: relative;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08; pointer-events: none;
        }
        .cta-content { position: relative; z-index: 1; max-width: 640px; margin: 0 auto; }
        .cta-content h2 { font-size: 2.4rem; margin-bottom: 16px; }
        .cta-content p { color: var(--text-secondary); margin-bottom: 28px; font-size: 1.1rem; }
        @media (max-width: 640px) { .cta-content h2 { font-size: 1.6rem; } }

        /* ===== Footer ===== */
        .footer {
            background: #08080c; border-top: 1px solid rgba(212,168,83,0.06);
            padding: 48px 24px 24px;
        }
        .footer-grid {
            display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
            max-width: var(--max-width); margin: 0 auto;
        }
        .footer-brand .logo { font-size: 1.4rem; margin-bottom: 12px; display: inline-flex; }
        .footer-brand p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { color: var(--text-primary); font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col a {
            display: block; color: var(--text-muted); font-size: 0.9rem;
            padding: 4px 0; transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .footer-social { display: flex; gap: 12px; margin-top: 16px; }
        .footer-social a {
            width: 40px; height: 40px; border-radius: 50%;
            background: rgba(212,168,83,0.08); border: 1px solid rgba(212,168,83,0.12);
            display: flex; align-items: center; justify-content: center;
            color: var(--text-muted); font-size: 1.1rem;
        }
        .footer-social a:hover { background: var(--primary); color: #0a0a0f; border-color: var(--primary); }
        .footer-bottom {
            max-width: var(--max-width); margin: 32px auto 0;
            padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.04);
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: var(--text-muted);
        }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; } }
        @media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
        .fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .fade-in.visible { opacity: 1; transform: translateY(0); }

        /* ===== Focus & Accessibility ===== */
        a:focus-visible, button:focus-visible, .tab-item:focus-visible {
            outline: 2px solid var(--primary); outline-offset: 3px;
            border-radius: 4px;
        }
        @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }

        /* ===== Responsive Fine-tune ===== */
        @media (max-width: 1024px) { .intro-grid { gap: 40px; } .footer-grid { gap: 28px; } }
        @media (max-width: 520px) {
            .hero-title { font-size: 1.8rem; }
            .section-title { font-size: 1.4rem; }
            .stat-number { font-size: 1.6rem; }
            .btn-lg { padding: 12px 28px; font-size: 0.9rem; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #D4A853;
            --primary-dark: #B8893A;
            --primary-light: #E8C87A;
            --secondary: #1a1a2e;
            --secondary-light: #2a2a4e;
            --bg: #f8f6f2;
            --bg-card: #ffffff;
            --bg-dark: #0f0f1a;
            --text: #2d2d2d;
            --text-light: #6c757d;
            --text-white: #f1f1f1;
            --border: #e5e0d8;
            --border-light: #f0ece6;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            font-size: 1rem;
            overflow-x: hidden;
        }
        a { color: var(--primary-dark); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        .container { max-width: 1200px; padding: 0 24px; margin: 0 auto; }
        .container-narrow { max-width: 960px; }
        .container-wide { max-width: 1400px; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            padding: 12px 32px; border-radius: 50px; font-weight: 600; font-size: 0.95rem;
            border: none; cursor: pointer; transition: var(--transition);
            line-height: 1.4; white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff; box-shadow: 0 4px 16px rgba(212, 168, 83, 0.35);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(212, 168, 83, 0.45); color: #fff; }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            background: transparent; border: 2px solid var(--primary); color: var(--primary-dark);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 44px; font-size: 1.1rem; }
        .btn-white { background: #fff; color: var(--secondary); box-shadow: 0 4px 16px rgba(0,0,0,0.10); }
        .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,0.15); color: var(--secondary); }

        /* ===== 徽章 / 标签 ===== */
        .badge-custom {
            display: inline-block; padding: 4px 16px; border-radius: 50px;
            font-size: 0.75rem; font-weight: 600; letter-spacing: 0.3px;
            background: rgba(212, 168, 83, 0.15); color: var(--primary-dark);
        }
        .badge-hot { background: #ff4757; color: #fff; }
        .badge-new { background: #2ed573; color: #fff; }
        .badge-top { background: var(--primary); color: #fff; }

        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-card); border-radius: var(--radius);
            box-shadow: var(--shadow-sm); overflow: hidden;
            transition: var(--transition); border: 1px solid var(--border-light);
            height: 100%; display: flex; flex-direction: column;
        }
        .card-custom:hover {
            transform: translateY(-6px); box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }
        .card-custom .card-img {
            width: 100%; aspect-ratio: 16/10; object-fit: cover;
            border-bottom: 1px solid var(--border-light);
        }
        .card-custom .card-body { padding: 20px 24px 24px; flex: 1; display: flex; flex-direction: column; }
        .card-custom .card-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
        .card-custom .card-title { font-size: 1.15rem; font-weight: 700; color: var(--secondary); margin-bottom: 8px; line-height: 1.4; }
        .card-custom .card-text { font-size: 0.9rem; color: var(--text-light); flex: 1; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
        .card-custom .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--text-light); border-top: 1px solid var(--border-light); padding-top: 14px; margin-top: auto; }
        .card-custom .card-meta i { width: 14px; }

        /* ===== 板块标题 ===== */
        .section-title { font-size: 2.2rem; font-weight: 800; color: var(--secondary); margin-bottom: 8px; letter-spacing: -0.5px; }
        .section-subtitle { font-size: 1.05rem; color: var(--text-light); max-width: 600px; line-height: 1.6; }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-header .section-subtitle { margin: 0 auto; }

        /* ===== 导航 ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(255,255,255,0.92); backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.08); }
        .header-inner {
            max-width: 1200px; margin: 0 auto; padding: 0 24px;
            display: flex; align-items: center; justify-content: space-between;
            height: 68px;
        }
        .logo {
            font-size: 1.5rem; font-weight: 800; color: var(--secondary);
            display: flex; align-items: center; gap: 8px;
            letter-spacing: -0.5px;
        }
        .logo i { color: var(--primary); font-size: 1.3rem; }
        .logo:hover { color: var(--secondary); }
        .nav-desktop { display: flex; align-items: center; gap: 8px; }
        .nav-desktop a {
            padding: 8px 16px; border-radius: 50px; font-weight: 500; font-size: 0.92rem;
            color: var(--text); transition: var(--transition); position: relative;
        }
        .nav-desktop a:hover { background: rgba(212,168,83,0.10); color: var(--primary-dark); }
        .nav-desktop a.active { background: var(--primary); color: #fff; font-weight: 600; }
        .nav-desktop a.active:hover { background: var(--primary-dark); color: #fff; }
        .nav-desktop .btn { font-size: 0.85rem; padding: 6px 20px; margin-left: 4px; }

        /* ===== 移动端底部Tab导航 ===== */
        .bottom-tab {
            display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 999;
            background: rgba(255,255,255,0.96); backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid var(--border-light);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            box-shadow: 0 -4px 20px rgba(0,0,0,0.06);
        }
        .bottom-tab-inner { display: flex; justify-content: space-around; align-items: center; max-width: 500px; margin: 0 auto; }
        .bottom-tab-item {
            display: flex; flex-direction: column; align-items: center; gap: 2px;
            padding: 6px 12px; border-radius: 12px; transition: var(--transition);
            color: var(--text-light); font-size: 0.65rem; font-weight: 500;
            min-width: 60px; border: none; background: transparent; cursor: pointer;
        }
        .bottom-tab-item i { font-size: 1.3rem; transition: var(--transition); }
        .bottom-tab-item span { line-height: 1.2; }
        .bottom-tab-item.active { color: var(--primary); }
        .bottom-tab-item.active i { color: var(--primary); }
        .bottom-tab-item:hover { color: var(--primary); background: rgba(212,168,83,0.08); }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative; min-height: 420px; display: flex; align-items: center;
            margin-top: 68px; overflow: hidden;
            background: var(--bg-dark);
        }
        .category-hero-bg {
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.6; transform: scale(1.05);
            transition: transform 8s ease;
        }
        .category-hero:hover .category-hero-bg { transform: scale(1.12); }
        .category-hero-overlay {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,15,26,0.85) 0%, rgba(26,26,46,0.70) 50%, rgba(15,15,26,0.60) 100%);
        }
        .category-hero .container { position: relative; z-index: 2; padding: 80px 24px; text-align: center; }
        .category-hero .hero-badge {
            display: inline-block; padding: 6px 24px; border-radius: 50px;
            background: rgba(212,168,83,0.20); color: var(--primary-light);
            font-size: 0.85rem; font-weight: 600; letter-spacing: 1px;
            margin-bottom: 20px; border: 1px solid rgba(212,168,83,0.25);
        }
        .category-hero h1 {
            font-size: 3.2rem; font-weight: 900; color: #fff;
            letter-spacing: -1px; line-height: 1.2; margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.30);
        }
        .category-hero h1 i { color: var(--primary); }
        .category-hero .hero-desc {
            font-size: 1.2rem; color: rgba(255,255,255,0.80);
            max-width: 640px; margin: 0 auto 32px; line-height: 1.7;
        }
        .category-hero .hero-stats {
            display: flex; justify-content: center; gap: 48px; flex-wrap: wrap;
            margin-top: 32px;
        }
        .category-hero .hero-stat { text-align: center; }
        .category-hero .hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--primary); display: block; }
        .category-hero .hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.60); }

        /* ===== 分类简介 ===== */
        .intro-section {
            padding: 80px 0; background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
        }
        .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .intro-content h2 { font-size: 2rem; font-weight: 800; color: var(--secondary); margin-bottom: 16px; }
        .intro-content p { color: var(--text-light); line-height: 1.8; margin-bottom: 20px; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
        .intro-feature { display: flex; align-items: center; gap: 12px; font-weight: 500; color: var(--text); }
        .intro-feature i { color: var(--primary); font-size: 1.1rem; width: 22px; text-align: center; }
        .intro-image { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
        .intro-image img { width: 100%; height: 400px; object-fit: cover; transition: var(--transition); }
        .intro-image:hover img { transform: scale(1.03); }

        /* ===== 攻略列表 ===== */
        .guides-section { padding: 80px 0; background: var(--bg); }
        .guides-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .guide-card { position: relative; }
        .guide-card .card-img { aspect-ratio: 16/12; }
        .guide-card .badge-pos { position: absolute; top: 12px; left: 12px; z-index: 2; }

        /* ===== 热门攻略 ===== */
        .hot-section {
            padding: 80px 0;
            background: var(--bg-dark);
            position: relative; overflow: hidden;
        }
        .hot-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.08; pointer-events: none;
        }
        .hot-section .container { position: relative; z-index: 1; }
        .hot-section .section-title { color: #fff; }
        .hot-section .section-subtitle { color: rgba(255,255,255,0.60); }
        .hot-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .hot-card {
            background: rgba(255,255,255,0.06); border-radius: var(--radius);
            padding: 24px 20px; text-align: center;
            border: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition); backdrop-filter: blur(6px);
        }
        .hot-card:hover { background: rgba(255,255,255,0.12); transform: translateY(-4px); border-color: var(--primary); }
        .hot-card .hot-icon { font-size: 2.2rem; color: var(--primary); margin-bottom: 12px; }
        .hot-card h4 { color: #fff; font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
        .hot-card p { color: rgba(255,255,255,0.55); font-size: 0.85rem; line-height: 1.5; }
        .hot-card .hot-count { display: inline-block; margin-top: 10px; font-size: 0.75rem; color: rgba(255,255,255,0.35); }

        /* ===== 专题标签 ===== */
        .topics-section { padding: 60px 0; background: var(--bg-card); }
        .topics-cloud { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; max-width: 720px; margin: 0 auto; }
        .topic-tag {
            padding: 10px 28px; border-radius: 50px; background: var(--bg);
            border: 1px solid var(--border); font-weight: 500; font-size: 0.92rem;
            color: var(--text); transition: var(--transition); cursor: default;
        }
        .topic-tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }
        .topic-tag i { margin-right: 6px; color: var(--primary); }
        .topic-tag:hover i { color: #fff; }

        /* ===== FAQ ===== */
        .faq-section { padding: 80px 0; background: var(--bg); }
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card); border-radius: var(--radius);
            border: 1px solid var(--border-light); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 18px 24px; display: flex; align-items: center; justify-content: space-between;
            font-weight: 600; font-size: 1rem; color: var(--secondary);
            cursor: pointer; transition: var(--transition); gap: 16px;
            background: none; border: none; width: 100%; text-align: left;
        }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 1.1rem; flex-shrink: 0; }
        .faq-item.active .faq-question i { 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-light); line-height: 1.7; font-size: 0.95rem;
        }
        .faq-item.active .faq-answer { max-height: 300px; padding: 0 24px 20px; }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0; text-align: center;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            position: relative; overflow: hidden;
        }
        .cta-section::after {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06; pointer-events: none;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { font-size: 2.4rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.70); max-width: 560px; margin: 0 auto 28px; }
        .cta-section .btn-group { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--secondary); color: rgba(255,255,255,0.80);
            padding: 60px 0 0; border-top: 3px solid var(--primary);
        }
        .footer-grid {
            max-width: 1200px; margin: 0 auto; padding: 0 24px;
            display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
        }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; font-size: 1.4rem; }
        .footer-brand .logo i { color: var(--primary); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.60); max-width: 320px; }
        .footer-social { display: flex; gap: 14px; margin-top: 20px; }
        .footer-social a {
            width: 40px; height: 40px; border-radius: 50%;
            background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.70);
            display: flex; align-items: center; justify-content: center;
            transition: var(--transition); font-size: 1.1rem;
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; letter-spacing: 0.5px; }
        .footer-col a {
            display: block; padding: 5px 0; font-size: 0.88rem;
            color: rgba(255,255,255,0.55); transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            max-width: 1200px; margin: 0 auto; padding: 24px 24px 40px;
            border-top: 1px solid rgba(255,255,255,0.08); margin-top: 40px;
            display: flex; justify-content: space-between; align-items: center;
            font-size: 0.82rem; color: rgba(255,255,255,0.40); flex-wrap: wrap; gap: 8px;
        }
        .footer-bottom span:last-child { font-family: monospace; letter-spacing: 0.5px; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .guides-grid { grid-template-columns: repeat(2, 1fr); }
            .hot-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }

        @media (max-width: 768px) {
            .header-inner { height: 60px; }
            .nav-desktop { display: none; }
            .bottom-tab { display: block; }
            body { padding-bottom: 68px; }

            .category-hero { min-height: 340px; margin-top: 60px; }
            .category-hero h1 { font-size: 2.2rem; }
            .category-hero .hero-desc { font-size: 1rem; }
            .category-hero .hero-stats { gap: 24px; }
            .category-hero .hero-stat .num { font-size: 1.5rem; }

            .section-title { font-size: 1.8rem; }
            .section-header { margin-bottom: 32px; }

            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-features { grid-template-columns: 1fr; }
            .intro-image img { height: 280px; }

            .guides-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
            .hot-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }

            .footer-grid { grid-template-columns: 1fr; gap: 28px; text-align: center; }
            .footer-brand p { margin: 0 auto; }
            .footer-social { justify-content: center; }
            .footer-bottom { flex-direction: column; text-align: center; padding-bottom: 80px; }

            .faq-question { font-size: 0.92rem; padding: 16px 18px; }
            .faq-answer { font-size: 0.88rem; }

            .cta-section h2 { font-size: 1.8rem; }
            .cta-section .btn-group { flex-direction: column; align-items: center; }

            .category-hero .hero-stats { flex-direction: row; flex-wrap: wrap; gap: 16px; }
            .category-hero .hero-stat { flex: 1; min-width: 80px; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .category-hero h1 { font-size: 1.7rem; }
            .category-hero .hero-desc { font-size: 0.9rem; }
            .section-title { font-size: 1.5rem; }
            .guides-section, .hot-section, .faq-section, .cta-section, .intro-section, .topics-section { padding: 48px 0; }
            .topics-cloud { gap: 8px; }
            .topic-tag { padding: 6px 16px; font-size: 0.82rem; }
            .hot-card { padding: 18px 14px; }
            .hot-card .hot-icon { font-size: 1.6rem; }
            .card-custom .card-body { padding: 16px 18px 20px; }
            .card-custom .card-title { font-size: 1rem; }
        }

        @media (min-width: 769px) {
            .bottom-tab { display: none !important; }
            body { padding-bottom: 0 !important; }
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
        .animate-fade-up { animation: fadeUp 0.6s ease forwards; }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg); }
        ::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--primary-dark); }

        /* ===== 选择高亮 ===== */
        ::selection { background: var(--primary); color: #fff; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #f59e0b;
            --primary-dark: #d97706;
            --primary-light: #fbbf24;
            --primary-gradient: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
            --secondary: #1e293b;
            --secondary-light: #334155;
            --accent: #ef4444;
            --bg-dark: #0f172a;
            --bg-card: #1e293b;
            --bg-section: #f8fafc;
            --bg-white: #ffffff;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --border-light: rgba(255,255,255,0.1);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.10);
            --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.20);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-full: 9999px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
            --nav-gap: 28px;
        }

        /* ===== 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-section);
            overflow-x: hidden;
        }
        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); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--header-height);
            transition: var(--transition);
        }
        .header.scrolled { background: rgba(15, 23, 42, 0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .logo i { color: var(--primary); font-size: 1.4rem; }
        .logo:hover { color: var(--primary); transform: scale(1.02); }
        .nav-desktop { display: flex; align-items: center; gap: var(--nav-gap); }
        .nav-desktop a {
            color: rgba(255,255,255,0.75);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-gradient);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-desktop a:hover { color: var(--text-white); }
        .nav-desktop a:hover::after { width: 100%; }
        .nav-desktop a.active { color: var(--primary); }
        .nav-desktop a.active::after { width: 100%; background: var(--primary); }
        .nav-desktop .btn-primary {
            background: var(--primary-gradient);
            color: #fff !important;
            padding: 8px 24px !important;
            border-radius: var(--radius-full);
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
            transition: var(--transition);
        }
        .nav-desktop .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.45);
        }
        .nav-desktop .btn-primary::after { display: none !important; }
        .nav-toggle {
            display: none;
            background: none;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover { background: rgba(255,255,255,0.1); }

        /* Mobile Bottom Tab */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1001;
            background: rgba(15, 23, 42, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 6px env(safe-area-inset-bottom, 6px);
            justify-content: space-around;
            align-items: center;
            height: 64px;
        }
        .mobile-tab-bar a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            color: rgba(255,255,255,0.5);
            font-size: 0.65rem;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .mobile-tab-bar a i { font-size: 1.25rem; transition: var(--transition); }
        .mobile-tab-bar a span { line-height: 1.2; }
        .mobile-tab-bar a:hover { color: var(--text-white); background: rgba(255,255,255,0.05); }
        .mobile-tab-bar a.active { color: var(--primary); }
        .mobile-tab-bar a.active i { transform: scale(1.1); }
        .mobile-tab-bar a.active::after {
            content: '';
            position: absolute;
            top: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary-gradient);
            border-radius: 0 0 4px 4px;
        }

        /* Mobile Drawer */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100%;
            background: var(--bg-card);
            z-index: 1002;
            padding: 80px 28px 32px;
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: -8px 0 40px rgba(0,0,0,0.4);
            border-left: 1px solid rgba(255,255,255,0.06);
            overflow-y: auto;
        }
        .mobile-drawer.open { right: 0; }
        .mobile-drawer-overlay {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.6);
            z-index: 1001;
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }
        .mobile-drawer-overlay.show { opacity: 1; pointer-events: auto; }
        .mobile-drawer a {
            display: block;
            color: rgba(255,255,255,0.75);
            font-size: 1.1rem;
            font-weight: 500;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border-left: 3px solid transparent;
        }
        .mobile-drawer a:hover { color: var(--text-white); background: rgba(255,255,255,0.05); border-left-color: var(--primary); }
        .mobile-drawer a.active { color: var(--primary); background: rgba(245,158,11,0.08); border-left-color: var(--primary); }
        .mobile-drawer .drawer-close {
            position: absolute;
            top: 20px;
            right: 20px;
            background: rgba(255,255,255,0.08);
            color: var(--text-white);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
            border: none;
        }
        .mobile-drawer .drawer-close:hover { background: rgba(255,255,255,0.15); transform: rotate(90deg); }

        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .nav-toggle { display: flex; align-items: center; justify-content: center; }
            .mobile-tab-bar { display: flex; }
            body { padding-bottom: 64px; }
            .header-inner { padding: 0 16px; }
            .logo { font-size: 1.25rem; }
            .logo i { font-size: 1.15rem; }
        }
        @media (min-width: 769px) {
            .mobile-drawer, .mobile-drawer-overlay, .nav-toggle { display: none !important; }
            .mobile-tab-bar { display: none !important; }
        }

        /* ===== Article Detail ===== */
        .article-banner {
            position: relative;
            padding: 120px 0 60px;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: center;
        }
        .article-banner-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            transform: scale(1.05);
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.92) 0%, rgba(15,23,42,0.70) 100%);
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255,255,255,0.5);
            font-size: 0.85rem;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: rgba(255,255,255,0.6); transition: var(--transition); }
        .article-breadcrumb a:hover { color: var(--primary); }
        .article-breadcrumb i { font-size: 0.7rem; }
        .article-badge {
            display: inline-block;
            background: var(--primary-gradient);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .article-title {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.25;
            max-width: 850px;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-meta i { margin-right: 6px; color: var(--primary); }
        .article-meta span { display: flex; align-items: center; }

        @media (max-width: 768px) {
            .article-banner { padding: 100px 0 40px; min-height: 260px; }
            .article-title { font-size: 1.7rem; }
            .article-meta { gap: 14px; font-size: 0.8rem; flex-wrap: wrap; }
            .article-breadcrumb { font-size: 0.75rem; }
        }
        @media (max-width: 520px) {
            .article-title { font-size: 1.35rem; }
            .article-banner { padding: 80px 0 32px; min-height: 200px; }
            .article-meta { gap: 10px; font-size: 0.75rem; }
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0 80px;
            background: var(--bg-section);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        .article-body .article-featured-img {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 28px;
            object-fit: cover;
            max-height: 480px;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-body .content p { margin-bottom: 1.5em; }
        .article-body .content h2, .article-body .content h3, .article-body .content h4 {
            color: var(--text-primary);
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            font-weight: 700;
            line-height: 1.3;
        }
        .article-body .content h2 { font-size: 1.6rem; }
        .article-body .content h3 { font-size: 1.3rem; }
        .article-body .content ul, .article-body .content ol {
            margin-bottom: 1.5em;
            padding-left: 1.5em;
        }
        .article-body .content li { margin-bottom: 0.5em; list-style: disc; }
        .article-body .content ol li { list-style: decimal; }
        .article-body .content a { color: var(--primary); text-decoration: underline; font-weight: 500; }
        .article-body .content a:hover { color: var(--primary-dark); }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(245,158,11,0.06);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-body .content img { border-radius: var(--radius-md); margin: 1.5em 0; box-shadow: var(--shadow-sm); }
        .article-body .content code {
            background: #f1f5f9;
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
        }
        .article-body .content pre {
            background: var(--bg-dark);
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-tags .tag {
            display: inline-block;
            background: rgba(245,158,11,0.08);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 500;
            padding: 5px 16px;
            border-radius: var(--radius-full);
            transition: var(--transition);
            border: 1px solid rgba(245,158,11,0.15);
        }
        .article-tags .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-1px); }

        /* Article Sidebar */
        .article-sidebar { display: flex; flex-direction: column; gap: 28px; }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        .sidebar-card .side-list { display: flex; flex-direction: column; gap: 12px; }
        .sidebar-card .side-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .sidebar-card .side-list a:last-child { border-bottom: none; }
        .sidebar-card .side-list a:hover { color: var(--primary); padding-left: 6px; }
        .sidebar-card .side-list a i { color: var(--primary); font-size: 0.75rem; margin-top: 4px; flex-shrink: 0; }
        .sidebar-cta {
            background: var(--primary-gradient);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            text-align: center;
            color: #fff;
        }
        .sidebar-cta h4 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
        .sidebar-cta p { font-size: 0.9rem; opacity: 0.9; margin-bottom: 18px; }
        .sidebar-cta .btn {
            display: inline-block;
            background: rgba(255,255,255,0.2);
            color: #fff;
            padding: 10px 32px;
            border-radius: var(--radius-full);
            font-weight: 600;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.25);
            transition: var(--transition);
        }
        .sidebar-cta .btn:hover { background: rgba(255,255,255,0.3); transform: translateY(-2px); }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr 260px; gap: 32px; }
            .article-body { padding: 32px 28px; }
        }
        @media (max-width: 768px) {
            .article-layout { grid-template-columns: 1fr; gap: 32px; }
            .article-body { padding: 24px 20px; }
            .article-body .content { font-size: 0.95rem; }
            .article-body .content h2 { font-size: 1.35rem; }
            .article-body .content h3 { font-size: 1.15rem; }
            .sidebar-card { padding: 20px; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 18px 14px; border-radius: var(--radius-md); }
            .article-body .content { font-size: 0.9rem; line-height: 1.75; }
            .article-body .content h2 { font-size: 1.2rem; }
            .article-body .content h3 { font-size: 1.05rem; }
            .sidebar-cta { padding: 24px 18px; }
        }

        /* ===== Article Nav (Prev/Next) ===== */
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            background: rgba(245,158,11,0.04);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            max-width: 45%;
        }
        .article-nav a:hover { background: rgba(245,158,11,0.1); color: var(--primary); border-color: var(--primary); transform: translateY(-1px); }
        .article-nav a i { font-size: 0.85rem; }
        .article-nav .nav-next { text-align: right; flex-direction: row-reverse; }
        @media (max-width: 520px) {
            .article-nav { flex-direction: column; align-items: stretch; }
            .article-nav a { max-width: 100%; justify-content: center; }
        }

        /* ===== Related / CTA ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-white);
        }
        .related-section .section-title {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .related-section .section-sub {
            text-align: center;
            color: var(--text-light);
            margin-bottom: 36px;
            font-size: 1rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-section);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body { padding: 18px 20px 22px; }
        .related-card .card-body h4 { font-size: 1rem; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; line-height: 1.4; }
        .related-card .card-body p { font-size: 0.85rem; color: var(--text-light); line-height: 1.5; }
        .related-card .card-body .card-meta { font-size: 0.75rem; color: var(--text-light); margin-top: 10px; display: flex; align-items: center; gap: 12px; }
        .related-card .card-body .card-meta i { color: var(--primary); margin-right: 4px; }

        @media (max-width: 768px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .related-section { padding: 40px 0; }
            .related-section .section-title { font-size: 1.4rem; }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-card img { height: 200px; }
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-box i { font-size: 3.5rem; color: var(--text-light); margin-bottom: 20px; display: block; }
        .not-found-box h2 { font-size: 1.8rem; color: var(--text-primary); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-light); margin-bottom: 24px; font-size: 1rem; }
        .not-found-box .btn {
            display: inline-block;
            background: var(--primary-gradient);
            color: #fff;
            padding: 12px 36px;
            border-radius: var(--radius-full);
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(245,158,11,0.3);
            transition: var(--transition);
        }
        .not-found-box .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(245,158,11,0.4); }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 64px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-grid {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 48px;
        }
        .footer-brand .logo { font-size: 1.4rem; margin-bottom: 14px; display: inline-flex; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; margin-bottom: 20px; color: rgba(255,255,255,0.55); max-width: 320px; }
        .footer-social { display: flex; gap: 14px; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid rgba(255,255,255,0.05);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-3px); box-shadow: 0 6px 20px rgba(245,158,11,0.3); }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--primary-gradient);
            border-radius: 2px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary); padding-left: 6px; }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 40px auto 0;
            padding: 20px 24px 0;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom span:last-child { font-family: monospace; letter-spacing: 0.5px; }

        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .footer { padding: 48px 0 80px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; padding: 0 16px; }
            .footer-brand { grid-column: 1 / -1; }
            .footer-brand p { max-width: 100%; }
            .footer-bottom { flex-direction: column; text-align: center; padding: 16px 16px 0; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-col h4 { margin-bottom: 12px; }
        }

        /* ===== Scroll to Top ===== */
        .scroll-top {
            position: fixed;
            bottom: 80px;
            right: 20px;
            z-index: 999;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: 0 4px 16px rgba(245,158,11,0.35);
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .scroll-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
        .scroll-top:hover { transform: translateY(-4px); box-shadow: 0 8px 28px rgba(245,158,11,0.45); }
        @media (max-width: 768px) { .scroll-top { bottom: 80px; right: 14px; width: 40px; height: 40px; font-size: 1rem; } }

        /* ===== Simple Animations ===== */
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(24px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-fade-up { animation: fadeUp 0.6s ease forwards; }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }

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

        /* ===== Print ===== */
        @media print {
            .header, .mobile-tab-bar, .scroll-top, .sidebar-card, .related-section { display: none !important; }
            .article-section { padding: 20px 0; }
            .article-body { box-shadow: none; border: none; padding: 0; }
            body { background: #fff; }
            .article-banner { padding: 20px 0; min-height: auto; background: #f8fafc !important; }
            .article-banner-bg { display: none; }
            .article-banner::after { display: none; }
            .article-title { color: #1e293b; }
            .article-meta { color: #94a3b8; }
            .article-breadcrumb { color: #94a3b8; }
            .article-breadcrumb a { color: #94a3b8; }
            .footer { padding: 20px 0; }
        }