/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b3d;
            --primary-light: #1a2a5e;
            --primary-dark: #0a122a;
            --accent: #d4a843;
            --accent-light: #e8c56e;
            --accent-dark: #b8922e;
            --bg-body: #f5f7fc;
            --bg-white: #ffffff;
            --bg-light: #e8f0fe;
            --bg-dark: #0f1b3d;
            --text-primary: #0f1b3d;
            --text-body: #2c3e50;
            --text-muted: #6c7a8d;
            --text-white: #ffffff;
            --text-accent: #d4a843;
            --border-color: #e2e8f0;
            --border-light: #f0f4f8;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(15,27,61,0.06);
            --shadow-md: 0 8px 24px rgba(15,27,61,0.10);
            --shadow-lg: 0 16px 48px rgba(15,27,61,0.14);
            --shadow-xl: 0 24px 64px rgba(15,27,61,0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --spacing-section: 5rem;
            --container-max: 1200px;
            --header-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-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--accent-dark); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-primary); font-weight: 700; line-height: 1.3; }
        h1 { font-size: 2.75rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.25rem; }
        p { margin-bottom: 1rem; }
        p:last-child { margin-bottom: 0; }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .text-accent { color: var(--text-accent); }
        .text-muted { color: var(--text-muted); }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2rem; }
        .mb-5 { margin-bottom: 3rem; }
        .mt-4 { margin-top: 2rem; }
        .mt-5 { margin-top: 3rem; }
        .section-tag {
            display: inline-block;
            background: rgba(212,168,67,0.12);
            color: var(--accent-dark);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            padding: 0.3rem 1rem;
            border-radius: 20px;
            margin-bottom: 0.75rem;
            text-transform: uppercase;
        }
        .section-title {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto 2.5rem auto;
        }

        /* ===== Header & Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 12px rgba(15,27,61,0.04);
            transition: var(--transition);
        }
        .header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
            font-weight: 900;
        }
        .logo span { color: var(--accent); }
        .logo:hover { color: var(--primary); }
        .nav { display: flex; align-items: center; gap: 0.25rem; }
        .nav a {
            position: relative;
            padding: 0.5rem 1.1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav a:hover { color: var(--primary); background: var(--bg-light); }
        .nav a.active {
            color: var(--primary);
            background: rgba(15,27,61,0.06);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-cta {
            background: var(--primary) !important;
            color: var(--text-white) !important;
            padding: 0.5rem 1.4rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            margin-left: 0.75rem;
        }
        .nav-cta:hover { background: var(--primary-light) !important; color: var(--text-white) !important; transform: translateY(-1px); box-shadow: var(--shadow-sm); }
        .mobile-toggle { display: none; font-size: 1.5rem; color: var(--primary); padding: 0.25rem; cursor: pointer; background: none; border: none; }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            margin-top: var(--header-height);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,27,61,0.88) 0%, rgba(15,27,61,0.72) 50%, rgba(15,27,61,0.88) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-body) 0%, transparent 100%);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 820px;
            padding: 2rem 1.5rem;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(212,168,67,0.18);
            color: var(--accent-light);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.4rem 1.2rem;
            border-radius: 30px;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(212,168,67,0.25);
            backdrop-filter: blur(4px);
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 1.2rem;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .hero h1 span { color: var(--accent); }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.78);
            max-width: 600px;
            margin: 0 auto 2rem auto;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
        }
        .btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255,255,255,0.3);
        }
        .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 2.5rem;
            margin-top: 3rem;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
            color: var(--text-white);
        }
        .hero-stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-top: 0.2rem;
        }

        /* ===== Section ===== */
        .section { padding: var(--spacing-section) 0; }
        .section-alt { background: var(--bg-white); }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark .section-title { color: var(--text-white); }
        .section-dark .section-subtitle { color: rgba(255,255,255,0.7); }

        /* ===== Categories ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
        .category-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(212,168,67,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem auto;
            font-size: 1.5rem;
            color: var(--accent-dark);
        }
        .category-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
        .category-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1.2rem; }
        .category-link {
            color: var(--accent-dark);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .category-link:hover { gap: 0.5rem; }

        /* ===== Latest Posts ===== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 1.5rem;
        }
        .post-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .post-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--bg-light);
        }
        .post-card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
        .post-card-cat {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(212,168,67,0.1);
            padding: 0.2rem 0.7rem;
            border-radius: 4px;
            margin-bottom: 0.5rem;
            align-self: flex-start;
        }
        .post-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; flex: 1; }
        .post-card h3 a { color: var(--text-primary); }
        .post-card h3 a:hover { color: var(--accent-dark); }
        .post-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1rem; }
        .post-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 0.75rem;
            margin-top: auto;
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 2rem;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(212,168,67,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--accent-dark);
            margin-bottom: 1rem;
        }
        .feature-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
        .feature-card p { font-size: 0.9rem; color: var(--text-muted); }

        /* ===== Process / Timeline ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            position: relative;
        }
        .process-step {
            text-align: center;
            padding: 1.5rem 1rem;
            position: relative;
        }
        .process-step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary);
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem auto;
        }
        .process-step h4 { font-size: 1rem; margin-bottom: 0.4rem; }
        .process-step p { font-size: 0.85rem; color: var(--text-muted); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            margin-bottom: 0.75rem;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.85rem; flex-shrink: 0; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 1.5rem 1.2rem 1.5rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            display: none;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-box {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            text-align: center;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,27,61,0.9), rgba(15,27,61,0.75));
            border-radius: var(--radius-lg);
        }
        .cta-box > * { position: relative; z-index: 2; }
        .cta-box h2 { color: var(--text-white); font-size: 2rem; margin-bottom: 0.75rem; }
        .cta-box p { color: rgba(255,255,255,0.78); max-width: 540px; margin: 0 auto 1.5rem auto; font-size: 1.05rem; }
        .cta-box .btn-primary { background: var(--accent); color: var(--primary); border-color: var(--accent); font-size: 1rem; padding: 0.85rem 2.5rem; }
        .cta-box .btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 3rem 0 1.5rem 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-brand .logo { color: var(--text-white); margin-bottom: 0.75rem; }
        .footer-brand p { font-size: 0.9rem; max-width: 320px; }
        .footer h4 { color: var(--text-white); font-size: 0.95rem; margin-bottom: 1rem; font-weight: 600; }
        .footer ul li { margin-bottom: 0.4rem; }
        .footer ul li a { color: rgba(255,255,255,0.6); font-size: 0.88rem; }
        .footer ul li a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Empty State ===== */
        .empty-state {
            text-align: center;
            padding: 3rem 1.5rem;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        .empty-state i { font-size: 2.5rem; color: var(--text-muted); margin-bottom: 1rem; }
        .empty-state p { color: var(--text-muted); font-size: 0.95rem; }

        /* ===== Mobile ===== */
        @media (max-width: 1024px) {
            .hero h1 { font-size: 2.6rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --spacing-section: 3.5rem; }
            .mobile-toggle { display: block; }
            .nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 1rem 1.5rem;
                gap: 0.25rem;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 2px solid var(--border-color);
            }
            .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav a { width: 100%; padding: 0.75rem 1rem; }
            .nav a.active::after { display: none; }
            .nav a.active { background: rgba(212,168,67,0.1); color: var(--accent-dark); }
            .nav-cta { margin-left: 0; margin-top: 0.5rem; text-align: center; }
            .hero { min-height: 80vh; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 1.5rem; }
            .hero-stat-num { font-size: 1.6rem; }
            .section-title { font-size: 1.6rem; }
            .posts-grid { grid-template-columns: 1fr; }
            .categories-grid { grid-template-columns: 1fr 1fr; }
            .features-grid { grid-template-columns: 1fr 1fr; }
            .process-steps { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .cta-box { padding: 2.5rem 1.5rem; }
            .cta-box h2 { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .categories-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr; }
            .process-steps { grid-template-columns: 1fr; }
            .posts-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .hero-stat-num { font-size: 1.4rem; }
            .hero { min-height: 70vh; }
        }
        @media (min-width: 769px) {
            .nav { display: flex !important; opacity: 1 !important; pointer-events: auto !important; transform: none !important; position: static !important; box-shadow: none !important; padding: 0 !important; border: none !important; }
        }

        /* ===== 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; }
        .delay-3 { animation-delay: 0.3s; }
        .delay-4 { animation-delay: 0.4s; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a42;
            --secondary: #e94560;
            --secondary-light: #ff6b81;
            --accent: #f5a623;
            --accent-light: #ffc107;
            --bg-white: #ffffff;
            --bg-light: #f8f9fc;
            --bg-dark: #0f1a42;
            --bg-section: #f0f2f8;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border-color: #e8e8f0;
            --border-light: #f0f0f5;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 4px 20px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 8px 40px rgba(26, 42, 108, 0.14);
            --shadow-hover: 0 12px 48px rgba(233, 69, 96, 0.18);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-base: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        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);
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 4px rgba(26, 42, 108, 0.04);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 1.2rem;
            font-weight: 800;
        }
        .logo span {
            color: var(--secondary);
            font-weight: 600;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .nav a.active {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.08);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .nav a.nav-cta {
            background: var(--secondary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a.nav-cta:hover {
            background: var(--secondary-light);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(233, 69, 96, 0.30);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover {
            background: var(--bg-light);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1.05rem;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.nav-cta {
                justify-content: center;
                margin-top: 8px;
                border-radius: var(--radius-sm);
            }
        }

        /* ===== 页面 Banner ===== */
        .page-banner {
            margin-top: var(--header-height);
            padding: 80px 0 60px;
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            overflow: hidden;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-white), transparent);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.20);
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 8px;
            line-height: 1.7;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 20px;
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--accent-light);
        }
        .page-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 分类介绍 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-light);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .badge {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            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: 380px;
            object-fit: cover;
            transition: var(--transition);
        }
        .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-content h3 {
            font-size: 1.6rem;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .intro-content p {
            font-size: 1.02rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .intro-content .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
        }
        .intro-content .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .intro-content .feature-list li i {
            color: var(--secondary);
            font-size: 0.85rem;
            width: 20px;
            text-align: center;
        }

        /* ===== 文章/内容卡片 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-article {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card-article:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-color);
        }
        .card-article .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .card-article .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .card-article:hover .card-img img {
            transform: scale(1.06);
        }
        .card-article .card-img .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--secondary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .card-article .card-body {
            padding: 24px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-article .card-body .meta {
            display: flex;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .card-article .card-body .meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .card-article .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card-article .card-body h3 a {
            color: var(--text-primary);
        }
        .card-article .card-body h3 a:hover {
            color: var(--secondary);
        }
        .card-article .card-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            flex: 1;
            margin-bottom: 16px;
        }
        .card-article .card-body .read-more {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
            align-self: flex-start;
        }
        .card-article .card-body .read-more:hover {
            color: var(--secondary);
            gap: 10px;
        }

        /* ===== 特色板块 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-color);
        }
        .feature-card .icon-box {
            width: 60px;
            height: 60px;
            margin: 0 auto 18px;
            background: var(--bg-light);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .icon-box {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ===== 排行榜 / 数据 ===== */
        .rank-list {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
        }
        .rank-item {
            display: flex;
            align-items: center;
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
            gap: 16px;
        }
        .rank-item:last-child {
            border-bottom: none;
        }
        .rank-item:hover {
            background: var(--bg-light);
        }
        .rank-item .rank-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .rank-item:nth-child(1) .rank-num {
            background: var(--accent);
            color: #fff;
        }
        .rank-item:nth-child(2) .rank-num {
            background: var(--secondary);
            color: #fff;
        }
        .rank-item:nth-child(3) .rank-num {
            background: var(--primary-light);
            color: #fff;
        }
        .rank-item .rank-info {
            flex: 1;
        }
        .rank-item .rank-info h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }
        .rank-item .rank-info p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .rank-item .rank-score {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--primary);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question:hover {
            background: var(--bg-light);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--text-light);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--secondary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 70%, var(--primary-light) 100%), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 0;
            text-align: center;
            position: relative;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: var(--secondary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--secondary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(233, 69, 96, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.50);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            padding: 60px 0 0;
            color: rgba(255, 255, 255, 0.80);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo .logo-icon {
            background: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer h4 {
            font-size: 1rem;
            color: #fff;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.70);
            font-size: 0.9rem;
        }
        .footer ul li a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.70);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid {
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 60px 0 48px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .intro-image img {
                height: 240px;
            }
            .intro-content .feature-list {
                grid-template-columns: 1fr;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .rank-item {
                padding: 12px 16px;
                flex-wrap: wrap;
            }
            .rank-item .rank-score {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-card {
                padding: 24px 18px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 18px 14px;
                font-size: 0.88rem;
            }
        }

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

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a1628;
            --primary-light: #0d2137;
            --secondary: #d4a853;
            --secondary-light: #e8c56a;
            --accent: #f0c040;
            --bg-body: #f4f6fa;
            --bg-card: #ffffff;
            --bg-dark: #0a1628;
            --bg-section: #f0f2f6;
            --text-dark: #1a2332;
            --text-body: #2d3a4e;
            --text-light: #6b7a8f;
            --text-white: #f0f4f8;
            --border-color: #e2e6ed;
            --border-light: #eef1f5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(10, 22, 40, 0.06);
            --shadow-md: 0 6px 24px rgba(10, 22, 40, 0.10);
            --shadow-lg: 0 14px 40px rgba(10, 22, 40, 0.14);
            --transition: all 0.25s ease;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-body);
            overflow-x: hidden;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-light);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(212, 168, 83, 0.45);
            outline-offset: 2px;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: 820px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(212, 168, 83, 0.15);
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: #fff;
            text-decoration: none;
            transition: var(--transition);
        }
        .logo:hover {
            color: var(--secondary);
        }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--secondary);
            color: var(--primary);
            border-radius: 8px;
            font-weight: 800;
            font-size: 1.1rem;
            margin-right: 2px;
        }
        .logo span {
            color: var(--secondary);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.2px;
        }
        .nav a:hover {
            color: #fff;
            background: rgba(212, 168, 83, 0.12);
        }
        .nav a.active {
            color: #fff;
            background: rgba(212, 168, 83, 0.20);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .nav .nav-cta {
            background: var(--secondary);
            color: var(--primary);
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 30px;
        }
        .nav .nav-cta:hover {
            background: var(--secondary-light);
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(212, 168, 83, 0.30);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== Banner / Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 140px 0 70px;
            margin-top: 68px;
            background: var(--primary);
            overflow: hidden;
        }
        .article-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.30;
            pointer-events: none;
        }
        .article-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 22, 40, 0.92) 0%, rgba(13, 33, 55, 0.70) 100%);
            pointer-events: none;
        }
        .article-hero .container-narrow {
            position: relative;
            z-index: 2;
        }
        .article-hero .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 14px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 20px;
            padding: 0;
            background: none;
        }
        .article-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }
        .article-hero .breadcrumb a:hover {
            color: var(--secondary);
        }
        .article-hero .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }
        .article-hero .badge-category {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 30px;
            background: rgba(212, 168, 83, 0.18);
            color: var(--secondary);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 16px;
            border: 1px solid rgba(212, 168, 83, 0.20);
        }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
        }
        .article-hero .meta i {
            margin-right: 6px;
            color: var(--secondary);
            opacity: 0.7;
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0;
        }
        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 52px;
            border: 1px solid var(--border-light);
        }
        .article-card .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-dark);
        }
        .article-card .article-body p {
            margin-bottom: 1.4rem;
        }
        .article-card .article-body h2,
        .article-card .article-body h3,
        .article-card .article-body h4 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            font-weight: 700;
            color: var(--primary);
        }
        .article-card .article-body h2 {
            font-size: 1.6rem;
        }
        .article-card .article-body h3 {
            font-size: 1.3rem;
        }
        .article-card .article-body img {
            border-radius: var(--radius-md);
            margin: 1.8rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-card .article-body ul,
        .article-card .article-body ol {
            margin-bottom: 1.4rem;
            padding-left: 1.6rem;
        }
        .article-card .article-body li {
            margin-bottom: 0.4rem;
        }
        .article-card .article-body blockquote {
            border-left: 4px solid var(--secondary);
            padding: 12px 20px;
            margin: 1.6rem 0;
            background: rgba(212, 168, 83, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-card .article-body a {
            color: var(--secondary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-card .article-body a:hover {
            color: var(--secondary-light);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border-light);
        }
        .article-tags .tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 30px;
            background: var(--bg-section);
            color: var(--text-light);
            font-size: 0.82rem;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .article-tags .tag:hover {
            background: rgba(212, 168, 83, 0.10);
            color: var(--secondary);
            border-color: rgba(212, 168, 83, 0.25);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .article-share span {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-light);
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-section);
            color: var(--text-light);
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .article-share a:hover {
            background: var(--secondary);
            color: var(--primary);
            border-color: var(--secondary);
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-section);
        }
        .related-section .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 36px;
            text-align: center;
        }
        .related-section .section-title span {
            color: var(--secondary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 18px 20px 22px;
        }
        .related-card .card-body .card-cat {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card .card-body h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .card-date {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 70px 0;
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section h2 span {
            color: var(--secondary);
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-cta {
            display: inline-block;
            padding: 14px 44px;
            border-radius: 40px;
            background: var(--secondary);
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            border: none;
        }
        .cta-section .btn-cta:hover {
            background: var(--secondary-light);
            color: var(--primary);
            box-shadow: 0 8px 30px rgba(212, 168, 83, 0.30);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .footer {
            background: #070f1a;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(212, 168, 83, 0.08);
        }
        .footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }
        .footer .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        .footer .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
            max-width: 340px;
        }
        .footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--secondary);
        }
        .footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .not-found-box i {
            font-size: 3.6rem;
            color: var(--secondary);
            opacity: 0.5;
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .not-found-box .btn-back {
            display: inline-block;
            padding: 12px 36px;
            border-radius: 30px;
            background: var(--secondary);
            color: var(--primary);
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover {
            background: var(--secondary-light);
            color: var(--primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(10, 22, 40, 0.98);
                backdrop-filter: blur(16px);
                padding: 16px 24px 24px;
                border-bottom: 1px solid rgba(212, 168, 83, 0.12);
                gap: 4px;
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                padding: 12px 18px;
                border-radius: 10px;
                width: 100%;
            }
            .nav .nav-cta {
                margin-top: 6px;
                text-align: center;
            }
            .nav-toggle {
                display: block;
            }

            .article-hero {
                padding: 110px 0 50px;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .article-hero .meta {
                gap: 10px 18px;
                font-size: 0.82rem;
            }

            .article-card {
                padding: 28px 24px;
            }
            .article-card .article-body {
                font-size: 1rem;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .header .container {
                height: 60px;
                padding: 0 16px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.9rem;
            }
            .article-hero {
                padding: 90px 0 40px;
                margin-top: 60px;
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-hero .breadcrumb {
                font-size: 0.75rem;
            }
            .article-card {
                padding: 20px 16px;
                border-radius: var(--radius-md);
            }
            .article-card .article-body {
                font-size: 0.95rem;
            }
            .related-card .card-img {
                height: 150px;
            }
            .cta-section {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section .btn-cta {
                padding: 12px 32px;
                font-size: 0.95rem;
            }
        }
        /* ===== End CSS ===== */