/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1b3d;
            --primary-light: #1a2d5e;
            --primary-dark: #070e24;
            --accent: #f0b429;
            --accent-hover: #d49a1e;
            --accent-light: #fde6a8;
            --bg: #ffffff;
            --bg-alt: #f4f6fc;
            --bg-dark: #0a1128;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #f8fafc;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-brand-height: 64px;
            --header-nav-height: 48px;
        }

        /* ===== 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-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; transition: var(--transition); }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.35rem; }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 0.75rem; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Utility ===== */
        .section-padding { padding: 80px 0; }
        .section-padding-sm { padding: 56px 0; }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
            margin-bottom: 12px;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin: 12px auto 0;
        }
        .section-title p {
            color: var(--text-light);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 12px auto 0;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--accent-light);
            color: #7a5a0a;
            letter-spacing: 0.3px;
        }
        .badge-primary {
            background: var(--primary);
            color: var(--text-white);
        }
        .badge-hot {
            background: #fee2e2;
            color: #b91c1c;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.4;
            transition: var(--transition);
            white-space: nowrap;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(240, 180, 41, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: var(--text-white);
        }
        .btn-outline:hover {
            background: var(--text-white);
            color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(255,255,255,0.2);
        }
        .btn-dark {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }
        .btn-dark:hover {
            background: var(--primary-light);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(15, 27, 61, 0.3);
        }
        .btn-lg { padding: 16px 40px; font-size: 1.1rem; }
        .btn-sm { padding: 8px 20px; font-size: 0.9rem; }
        .text-center { text-align: center; }
        .text-light { color: var(--text-light); }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .gap-4 { gap: 16px; }
        .gap-6 { gap: 24px; }
        .mt-4 { margin-top: 16px; }
        .mt-8 { margin-top: 32px; }

        /* ===== Header & Navigation (Magazine Style) ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg);
            box-shadow: var(--shadow-sm);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-brand-height);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.1rem;
        }
        .site-logo .logo-text {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border-radius: 50px;
            padding: 6px 16px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(240, 180, 41, 0.15);
        }
        .header-search input {
            border: none;
            background: transparent;
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--text);
            outline: none;
            width: 160px;
        }
        .header-search input::placeholder { color: var(--text-light); }
        .header-search button {
            color: var(--text-light);
            font-size: 1rem;
            padding: 4px 8px;
        }
        .header-search button:hover { color: var(--accent); }
        .header-btn-mobile {
            display: none;
            font-size: 1.4rem;
            color: var(--primary);
            padding: 4px 8px;
        }

        /* Navigation Row */
        .header-nav-row {
            border-top: 1px solid var(--border-light);
            background: var(--bg);
        }
        .header-nav-inner {
            display: flex;
            align-items: center;
            height: var(--header-nav-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            gap: 4px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .header-nav-inner::-webkit-scrollbar { display: none; }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            border-radius: 50px;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: var(--text-white);
        }
        .nav-link .nav-badge {
            margin-left: 6px;
            font-size: 0.65rem;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 2px 8px;
            border-radius: 50px;
            font-weight: 700;
        }
        .nav-link-mobile-only { display: none; }

        /* ===== Hero Section ===== */
        .hero {
            position: relative;
            min-height: 600px;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,17,40,0.88) 30%, rgba(10,17,40,0.55) 80%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg), transparent);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 720px;
            padding: 80px 24px;
        }
        .hero-content .hero-tag {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(240, 180, 41, 0.2);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 20px;
            border: 1px solid rgba(240, 180, 41, 0.3);
        }
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }
        .hero-content h1 .highlight {
            color: var(--accent);
        }
        .hero-content p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.8);
            max-width: 560px;
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero-stat-item {
            text-align: left;
        }
        .hero-stat-item .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat-item .stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-top: 4px;
        }

        /* ===== Features / 优势板块 ===== */
        .features-section {
            background: var(--bg);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 40px 32px;
            border: 1px solid var(--border);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-card .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
            margin: 0 auto 20px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .feature-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .feature-card p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* ===== Category / 分类入口 ===== */
        .category-section {
            background: var(--bg-alt);
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--bg);
            border-radius: var(--radius);
            padding: 32px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .category-card .cat-img {
            width: 120px;
            height: 90px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-alt);
        }
        .category-card .cat-info h3 {
            font-size: 1.15rem;
            margin-bottom: 6px;
            color: var(--primary);
        }
        .category-card .cat-info p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--accent);
        }
        .category-card .cat-link:hover { color: var(--accent-hover); gap: 10px; }
        .category-card .cat-link i { font-size: 0.8rem; }

        /* ===== Latest Posts / 最新资讯 ===== */
        .posts-section {
            background: var(--bg);
        }
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .post-card {
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .post-card .post-thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--bg-alt);
        }
        .post-card .post-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .post-card .post-meta .post-cat {
            background: var(--bg-alt);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 500;
            color: var(--primary);
        }
        .post-card .post-body h3 {
            font-size: 1.05rem;
            margin-bottom: 10px;
            color: var(--text);
            line-height: 1.4;
            flex: 1;
        }
        .post-card .post-body h3 a {
            color: inherit;
        }
        .post-card .post-body h3 a:hover {
            color: var(--primary);
        }
        .post-card .post-body .post-excerpt {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .post-card .post-body .post-date {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: auto;
        }
        .posts-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
            font-size: 1.05rem;
            background: var(--bg-alt);
            border-radius: var(--radius);
        }

        /* ===== Stats / 数据统计 ===== */
        .stats-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10,17,40,0.85);
        }
        .stats-section .container {
            position: relative;
            z-index: 1;
        }
        .stats-section .section-title h2 { color: var(--text-white); }
        .stats-section .section-title h2::after { background: var(--accent); }
        .stats-section .section-title p { color: rgba(255,255,255,0.6); }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-card {
            padding: 32px 20px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255,255,255,0.08);
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-4px);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .stat-card .stat-number .suffix {
            font-size: 1.2rem;
            color: var(--accent);
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            margin-top: 8px;
        }

        /* ===== Process / 使用流程 ===== */
        .process-section {
            background: var(--bg);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .process-step {
            text-align: center;
            padding: 32px 20px;
            position: relative;
        }
        .process-step .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            position: relative;
            z-index: 1;
        }
        .process-step .step-line {
            position: absolute;
            top: 28px;
            left: calc(50% + 40px);
            right: calc(-50% + 40px);
            height: 2px;
            background: var(--border);
            z-index: 0;
        }
        .process-step:last-child .step-line { display: none; }
        .process-step .step-icon {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .process-step h4 {
            font-size: 1.1rem;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-alt);
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            gap: 16px;
        }
        .faq-question .faq-toggle {
            font-size: 1.2rem;
            color: var(--accent);
            flex-shrink: 0;
            transition: var(--transition);
        }
        .faq-item.active .faq-toggle {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            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(--primary);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,27,61,0.92), rgba(15,27,61,0.7));
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-content {
            text-align: center;
            padding: 32px 0;
        }
        .cta-content h2 {
            color: var(--text-white);
            font-size: 2.2rem;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255,255,255,0.7);
            font-size: 1.15rem;
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .site-logo {
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-brand .site-logo .logo-text {
            background: none;
            -webkit-text-fill-color: var(--text-white);
            color: var(--text-white);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            max-width: 320px;
            line-height: 1.6;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .posts-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: repeat(2, 1fr); }
            .process-step .step-line { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .hero-content h1 { font-size: 2.6rem; }
        }
        @media (max-width: 768px) {
            .section-padding { padding: 56px 0; }
            .section-padding-sm { padding: 40px 0; }
            .section-title { margin-bottom: 32px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .hero { min-height: 480px; }
            .hero-content { padding: 56px 20px; }
            .hero-content h1 { font-size: 2rem; }
            .hero-content p { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat-item .stat-number { font-size: 1.4rem; }
            .features-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .posts-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .process-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .header-search input { width: 100px; }
            .header-btn-mobile { display: block; }
            .header-actions .btn { display: none; }
            .nav-link-mobile-only { display: inline-flex; }
            .category-card { flex-direction: column; text-align: center; }
            .category-card .cat-img { width: 100%; height: 140px; }
            .cta-content h2 { font-size: 1.6rem; }
            .cta-actions { flex-direction: column; align-items: center; }
            .hero-actions { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-content h1 { font-size: 1.6rem; }
            .hero-stats { gap: 16px; }
            .hero-stat-item .stat-number { font-size: 1.2rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .process-grid { grid-template-columns: 1fr; }
            .header-search input { width: 80px; }
            .header-brand-row { padding: 0 16px; }
            .header-nav-inner { padding: 0 16px; }
            .site-logo { font-size: 1.1rem; }
            .site-logo .logo-icon { width: 30px; height: 30px; font-size: 0.9rem; }
            .nav-link { padding: 6px 14px; font-size: 0.85rem; }
            .btn-lg { padding: 12px 28px; font-size: 1rem; }
            .post-card .post-thumb { height: 140px; }
            .stat-card .stat-number { font-size: 1.8rem; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4ba8;
            --primary-dark: #0f1a45;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-light: #f1f5f9;
            --bg-dark: #0f172a;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-inverse: #f8fafc;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-full: 9999px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-brand-h: 64px;
            --header-nav-h: 48px;
            --gap-section: 72px;
            --gap-card: 28px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: var(--text-primary);
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
        }
        h2 {
            font-size: 1.75rem;
            margin-bottom: 12px;
        }
        h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 12px;
            color: var(--text-secondary);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(26, 42, 108, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 42, 108, 0.35);
            color: #fff;
        }
        .btn-accent {
            background: var(--accent);
            color: #1e293b;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
            color: #1e293b;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 6px 16px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 1.1rem;
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: var(--radius-full);
            background: var(--bg-light);
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .badge-primary {
            background: rgba(26, 42, 108, 0.1);
            color: var(--primary);
        }
        .badge-accent {
            background: rgba(245, 158, 11, 0.15);
            color: var(--accent-dark);
        }
        .badge-green {
            background: rgba(16, 185, 129, 0.12);
            color: #065f46;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-white);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-brand-h);
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.3rem;
        }
        .site-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1rem;
        }
        .site-logo .logo-text {
            letter-spacing: 0.5px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-full);
            padding: 0 12px;
            border: 1px solid var(--border);
            transition: border var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(26, 42, 108, 0.1);
        }
        .header-search input {
            border: none;
            background: transparent;
            padding: 8px 8px 8px 4px;
            min-width: 160px;
            font-size: 0.9rem;
            outline: none;
            color: var(--text-primary);
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search button {
            background: none;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            padding: 6px;
            font-size: 0.95rem;
            transition: color var(--transition);
        }
        .header-search button:hover {
            color: var(--primary);
        }
        .header-btn-mobile {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 4px 8px;
        }
        .header-nav-row {
            border-top: 1px solid var(--border);
            background: var(--bg-white);
        }
        .header-nav-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            height: var(--header-nav-h);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .header-nav-inner::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-link i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .nav-link:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(26, 42, 108, 0.25);
        }
        .nav-link.active i {
            opacity: 1;
        }
        .nav-link-mobile-only {
            display: none;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-inverse);
            padding: 52px 0 24px;
            margin-top: 60px;
        }
        .site-footer .container {
            max-width: var(--container-max);
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .site-logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .site-logo .logo-icon {
            background: var(--accent);
            color: #1e293b;
        }
        .footer-brand p {
            color: #cbd5e1;
            font-size: 0.92rem;
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: #64748b;
        }
        .footer-bottom a {
            color: #94a3b8;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* ===== Section Common ===== */
        .section {
            padding: var(--gap-section) 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .section-title p {
            font-size: 1.05rem;
            max-width: 620px;
            margin: 8px auto 0;
            color: var(--text-secondary);
        }
        .section-subtitle {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent-dark);
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 0 64px;
            text-align: center;
            color: #fff;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 69, 0.88) 0%, rgba(26, 42, 108, 0.72) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            color: #fff;
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .page-banner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            max-width: 680px;
            margin: 0 auto 20px;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 16px;
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--accent-light);
        }
        .page-banner .breadcrumb span {
            color: var(--accent-light);
        }

        /* ===== Guide Steps ===== */
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--gap-card);
        }
        .guide-step-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            position: relative;
            text-align: center;
        }
        .guide-step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .guide-step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }
        .guide-step-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }
        .guide-step-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--gap-card);
        }
        .card-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .card-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .card-item .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .card-item .card-body {
            padding: 20px 20px 24px;
        }
        .card-item .card-body h3 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .card-item .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }
        .card-item .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .card-item .card-meta .badge {
            font-size: 0.72rem;
        }

        /* ===== 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);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            color: var(--text-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--bg-light);
        }
        .faq-question i {
            color: var(--text-muted);
            transition: transform var(--transition);
            font-size: 0.9rem;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 72px 0;
            text-align: center;
            color: #fff;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 26, 69, 0.82);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 24px;
            font-size: 1.05rem;
        }
        .cta-section .btn {
            font-size: 1.05rem;
            padding: 14px 40px;
        }

        /* ===== Content List ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-row {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .content-row:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .content-row .row-index {
            width: 32px;
            font-weight: 700;
            color: var(--text-muted);
            font-size: 1.1rem;
        }
        .content-row .row-text {
            flex: 1;
        }
        .content-row .row-text h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .content-row .row-text p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0;
        }
        .content-row .row-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            white-space: nowrap;
        }

        /* ===== Features Grid ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
        }
        .feature-item {
            text-align: center;
            padding: 28px 16px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .feature-item .feat-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(26, 42, 108, 0.08);
            color: var(--primary);
            font-size: 1.4rem;
            margin-bottom: 14px;
            transition: all var(--transition);
        }
        .feature-item:hover .feat-icon {
            background: var(--primary);
            color: #fff;
        }
        .feature-item h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .feature-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --gap-section: 48px;
            }
            .header-search input {
                min-width: 100px;
                width: 100px;
            }
            .header-btn-mobile {
                display: block;
            }
            .header-nav-inner {
                flex-wrap: nowrap;
                overflow-x: auto;
                gap: 2px;
                padding: 0 12px;
            }
            .nav-link {
                padding: 6px 14px;
                font-size: 0.82rem;
            }
            .nav-link-mobile-only {
                display: inline-flex;
            }
            .page-banner {
                padding: 56px 0 44px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .guide-steps {
                grid-template-columns: 1fr;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .content-row {
                flex-wrap: wrap;
                gap: 8px;
            }
            .content-row .row-meta {
                margin-left: auto;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .header-actions .btn-primary .btn-sm {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
        }
        @media (max-width: 520px) {
            .header-brand-row {
                padding: 0 12px;
                height: 56px;
            }
            .site-logo {
                font-size: 1.05rem;
            }
            .site-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }
            .header-search input {
                min-width: 70px;
                width: 70px;
                font-size: 0.8rem;
                padding: 6px 4px;
            }
            .header-actions .btn-primary .btn-sm {
                display: none;
            }
            .header-nav-inner {
                height: 42px;
                padding: 0 8px;
            }
            .nav-link {
                padding: 4px 10px;
                font-size: 0.75rem;
                gap: 4px;
            }
            .nav-link i {
                font-size: 0.7rem;
            }
            .page-banner h1 {
                font-size: 1.4rem;
            }
            .page-banner p {
                font-size: 0.85rem;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .guide-step-card {
                padding: 24px 16px 20px;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                font-size: 0.85rem;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .footer-grid {
                gap: 20px;
            }
            .footer-brand p {
                font-size: 0.85rem;
            }
        }

        /* ===== Utilities ===== */
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .text-center {
            text-align: center;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .d-flex {
            display: flex;
        }
        .align-center {
            align-items: center;
        }
        .justify-center {
            justify-content: center;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0d0d2b;
            --primary-light: #1a1f3a;
            --primary-dark: #07071a;
            --accent: #f0c040;
            --accent-hover: #e0b030;
            --accent-glow: rgba(240, 192, 64, 0.25);
            --bg: #f4f5f9;
            --bg-card: #ffffff;
            --bg-section: #f0f1f6;
            --text: #1a1a2e;
            --text-medium: #3d3d5c;
            --text-light: #6c757d;
            --text-lighter: #adb5bd;
            --border: #e9ecef;
            --border-light: #f0f1f5;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.10);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --content-width: 780px;
            --header-brand-height: 64px;
            --header-nav-height: 48px;
            --header-total: calc(var(--header-brand-height) + var(--header-nav-height));
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-total);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--primary);
        }
        h1 {
            font-size: 2.2rem;
        }
        h2 {
            font-size: 1.75rem;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.15rem;
        }
        p {
            margin-bottom: 1rem;
        }
        p:last-child {
            margin-bottom: 0;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--primary-dark);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-brand-height);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
            width: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff !important;
            text-decoration: none;
        }
        .site-logo .logo-icon {
            font-size: 1.6rem;
            color: var(--accent);
            line-height: 1;
        }
        .site-logo .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, #fff 60%, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 30px;
            padding: 0 6px 0 16px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .header-search:focus-within {
            background: rgba(255, 255, 255, 0.14);
            border-color: var(--accent);
        }
        .header-search input {
            background: transparent;
            border: none;
            padding: 8px 0;
            color: #fff;
            font-size: 0.9rem;
            min-width: 160px;
        }
        .header-search input::placeholder {
            color: var(--text-lighter);
            font-size: 0.85rem;
        }
        .header-search button {
            background: transparent;
            color: var(--text-lighter);
            padding: 8px 12px;
            cursor: pointer;
            font-size: 0.95rem;
            border-radius: 50%;
            transition: var(--transition);
        }
        .header-search button:hover {
            color: var(--accent);
        }
        .header-btn-mobile {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.4rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
        }
        .header-btn-mobile:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* Nav Row */
        .header-nav-row {
            background: var(--primary);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .header-nav-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--header-nav-height);
            overflow-x: auto;
            scrollbar-width: none;
        }
        .header-nav-inner::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            font-weight: 500;
            border-radius: 30px;
            white-space: nowrap;
            transition: var(--transition);
            text-decoration: none;
        }
        .nav-link i {
            font-size: 0.85rem;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: var(--primary-dark);
            background: var(--accent);
            font-weight: 600;
        }
        .nav-link.active:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
        }
        .nav-link-mobile-only {
            display: none;
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 30px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px var(--accent-glow);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.25);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 6px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 14px 40px;
            font-size: 1.05rem;
        }

        /* ===== Article Hero / Banner ===== */
        .article-hero {
            position: relative;
            padding: 60px 0 50px;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 13, 43, 0.92) 40%, rgba(13, 13, 43, 0.6));
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }
        .breadcrumb .current {
            color: var(--accent);
            font-weight: 500;
        }
        .article-category-badge {
            display: inline-block;
            padding: 4px 16px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 30px;
            margin-bottom: 16px;
        }
        .article-hero h1 {
            font-size: 2.4rem;
            color: #fff;
            max-width: 800px;
            line-height: 1.25;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--accent);
        }
        .article-meta span {
            display: flex;
            align-items: center;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 50px 0 60px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            max-width: var(--content-width);
            margin: 0 auto;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow);
        }
        .article-content .content-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-medium);
        }
        .article-content .content-body h2 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            font-size: 1.5rem;
        }
        .article-content .content-body h3 {
            margin-top: 1.6rem;
            margin-bottom: 0.6rem;
            font-size: 1.25rem;
        }
        .article-content .content-body p {
            margin-bottom: 1.2rem;
        }
        .article-content .content-body ul,
        .article-content .content-body ol {
            margin-bottom: 1.2rem;
            padding-left: 1.6rem;
        }
        .article-content .content-body ul li {
            list-style: disc;
            margin-bottom: 0.4rem;
        }
        .article-content .content-body ol li {
            list-style: decimal;
            margin-bottom: 0.4rem;
        }
        .article-content .content-body img {
            border-radius: var(--radius-sm);
            margin: 1.5rem auto;
            box-shadow: var(--shadow-sm);
        }
        .article-content .content-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 12px 20px;
            margin: 1.5rem 0;
            background: rgba(240, 192, 64, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-medium);
            font-style: italic;
        }
        .article-content .content-body a {
            color: var(--accent-hover);
            text-decoration: underline;
        }
        .article-content .content-body a:hover {
            color: var(--accent);
        }

        /* Article Footer */
        .article-footer {
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .article-tags .tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--bg-section);
            color: var(--text-light);
            font-size: 0.78rem;
            border-radius: 30px;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .article-share a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-section);
            color: var(--text-light);
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .article-share a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-box i {
            font-size: 4rem;
            color: var(--text-lighter);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            color: var(--text);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 24px;
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 50px 0 60px;
            background: var(--bg-section);
        }
        .related-section .section-title {
            font-size: 1.6rem;
            margin-bottom: 32px;
            text-align: center;
        }
        .related-section .section-title i {
            color: var(--accent);
            margin-right: 10px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--border-light);
        }
        .related-card .card-img-placeholder {
            width: 100%;
            height: 180px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.2);
            font-size: 2.5rem;
        }
        .related-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-cat {
            font-size: 0.75rem;
            color: var(--accent-hover);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-title a {
            color: var(--text);
        }
        .related-card .card-title a:hover {
            color: var(--accent-hover);
        }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-lighter);
        }
        .related-card .card-meta i {
            margin-right: 4px;
        }

        /* ===== CTA Section ===== */
        .article-cta {
            padding: 60px 0;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 13, 43, 0.88) 50%, rgba(13, 13, 43, 0.7));
            z-index: 1;
        }
        .article-cta .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .article-cta h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: 14px;
        }
        .article-cta p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 28px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 30px;
        }
        .site-footer .container {
            max-width: var(--max-width);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .site-logo .logo-text {
            font-size: 1.15rem;
        }
        .footer-brand p {
            margin-top: 14px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .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: 40px 20px;
            color: var(--text-lighter);
        }
        .empty-state i {
            font-size: 3rem;
            margin-bottom: 16px;
            display: block;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-hero h1 {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: calc(var(--header-brand-height) + var(--header-nav-height));
            }
            .header-search {
                display: none;
            }
            .header-actions .btn-primary {
                display: none;
            }
            .header-btn-mobile {
                display: block;
            }
            .nav-link-mobile-only {
                display: flex !important;
            }
            .header-nav-inner {
                overflow-x: auto;
                padding: 0 16px;
                gap: 2px;
            }
            .header-nav-inner .nav-link {
                font-size: 0.82rem;
                padding: 6px 14px;
            }
            .header-nav-inner .nav-link:not(.nav-link-mobile-only) {
                display: flex;
            }

            .article-hero {
                padding: 40px 0 36px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-meta {
                font-size: 0.82rem;
                gap: 12px;
            }
            .article-content {
                padding: 24px 20px;
                border-radius: var(--radius);
            }
            .article-content .content-body {
                font-size: 1rem;
            }
            .article-footer {
                flex-direction: column;
                align-items: flex-start;
            }

            .related-grid {
                grid-template-columns: 1fr;
                max-width: 460px;
                margin: 0 auto;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .article-cta h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-brand-row {
                padding: 0 16px;
            }
            .site-logo .logo-text {
                font-size: 1.05rem;
            }
            .site-logo .logo-icon {
                font-size: 1.3rem;
            }
            .article-hero h1 {
                font-size: 1.35rem;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .article-content {
                padding: 18px 14px;
            }
            .btn-lg {
                padding: 12px 30px;
                font-size: 0.95rem;
            }
        }

        /* ===== Mobile Nav Toggle (JS) ===== */
        @media (max-width: 768px) {
            .header-nav-inner {
                flex-wrap: nowrap;
                -webkit-overflow-scrolling: touch;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .article-hero .container {
            animation: fadeUp 0.6s ease-out;
        }
        .article-content {
            animation: fadeUp 0.5s ease-out 0.1s both;
        }
        .related-grid .related-card {
            animation: fadeUp 0.5s ease-out both;
        }
        .related-grid .related-card:nth-child(1) {
            animation-delay: 0.1s;
        }
        .related-grid .related-card:nth-child(2) {
            animation-delay: 0.2s;
        }
        .related-grid .related-card:nth-child(3) {
            animation-delay: 0.3s;
        }