/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a3e;
            --secondary: #e63946;
            --secondary-light: #ff5a67;
            --accent: #f4a261;
            --accent-light: #f8c78a;
            --bg-white: #ffffff;
            --bg-light: #f8f9fc;
            --bg-dark: #0f1a3e;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #2d2d44;
            --text-muted: #6c7a8d;
            --text-light: #f0f2f5;
            --border-color: #e2e6ef;
            --border-light: #f0f2f5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 108, 0.14);
            --shadow-xl: 0 24px 64px rgba(26, 42, 108, 0.18);
            --transition: all 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --spacer-section: 5rem;
            --spacer-element: 1.5rem;
        }

        /* ===== 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: 1rem;
            line-height: 1.65;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 0.5em;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .container-narrow {
            max-width: 860px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== Utility ===== */
        .section-padding {
            padding-top: var(--spacer-section);
            padding-bottom: var(--spacer-section);
        }
        .section-padding-top {
            padding-top: var(--spacer-section);
        }
        .section-padding-bottom {
            padding-bottom: var(--spacer-section);
        }
        .bg-light-section {
            background: var(--bg-light);
        }
        .bg-dark-section {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .bg-dark-section h2,
        .bg-dark-section h3,
        .bg-dark-section .section-title {
            color: #ffffff;
        }
        .text-center {
            text-align: center;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
            color: var(--text-dark);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 2.5rem auto;
            line-height: 1.6;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--accent));
            border-radius: 4px;
            margin: 0.75rem auto 1.5rem auto;
        }
        .section-divider-left {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--accent));
            border-radius: 4px;
            margin: 0.75rem 0 1.5rem 0;
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.8rem;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            border: 2px solid transparent;
            transition: var(--transition);
            cursor: pointer;
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            border-color: var(--secondary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-light:hover {
            background: var(--bg-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-lg {
            padding: 0.95rem 2.4rem;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }
        .btn-sm {
            padding: 0.45rem 1.2rem;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== Badge / Tag ===== */
        .badge-custom {
            display: inline-block;
            padding: 0.3rem 0.9rem;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 50px;
            background: rgba(26, 42, 108, 0.08);
            color: var(--primary);
            border: 1px solid rgba(26, 42, 108, 0.12);
            transition: var(--transition);
        }
        .badge-custom:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .badge-hot {
            background: rgba(230, 57, 70, 0.12);
            color: var(--secondary);
            border-color: rgba(230, 57, 70, 0.2);
        }
        .badge-hot:hover {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .badge-new {
            background: rgba(244, 162, 97, 0.12);
            color: #c77d2e;
            border-color: rgba(244, 162, 97, 0.2);
        }
        .badge-new:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        /* ===== Card ===== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-custom .card-img-top {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-bottom: 1px solid var(--border-light);
        }
        .card-custom .card-body {
            padding: 1.5rem;
        }
        .card-custom .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-dark);
        }
        .card-custom .card-text {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .card-custom .card-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-top: 0.75rem;
            padding-top: 0.75rem;
            border-top: 1px solid var(--border-light);
        }
        .card-custom .card-meta i {
            margin-right: 0.25rem;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 230, 239, 0.6);
            transition: var(--transition);
            box-shadow: 0 1px 12px rgba(26, 42, 108, 0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.02em;
        }
        .site-logo i {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .site-logo:hover {
            color: var(--primary-light);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-list .nav-item {
            position: relative;
        }
        .nav-list .nav-link {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.1rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            text-decoration: none;
        }
        .nav-list .nav-link i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-list .nav-link:hover {
            background: rgba(26, 42, 108, 0.06);
            color: var(--primary);
        }
        .nav-list .nav-link:hover i {
            color: var(--primary);
        }
        .nav-list .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(26, 42, 108, 0.2);
        }
        .nav-list .nav-link.active i {
            color: #fff;
        }
        .nav-cta {
            margin-left: 0.75rem;
        }
        .nav-cta .btn {
            padding: 0.5rem 1.4rem;
            font-size: 0.88rem;
            border-radius: var(--radius-sm);
        }

        /* Mobile toggle */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 0.25rem;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            color: var(--primary-light);
        }
        .nav-toggle:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 70px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 62, 0.92) 0%, rgba(26, 42, 108, 0.70) 50%, rgba(15, 26, 62, 0.88) 100%);
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 3rem 0;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            color: var(--text-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
        }
        .hero-content .hero-badge i {
            color: var(--accent);
        }
        .hero-content h1 {
            font-size: 3.5rem;
            font-weight: 900;
            color: #ffffff;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 1.2rem;
            max-width: 800px;
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content .hero-desc {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 2rem;
        }
        .hero-content .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .hero-content .hero-actions .btn {
            padding: 0.95rem 2.4rem;
            font-size: 1.05rem;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.10);
        }
        .hero-stats .stat-item .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stats .stat-item .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
        }

        /* ===== Features / 核心服务 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.8rem;
            margin-top: 1rem;
        }
        .feature-card {
            background: var(--bg-card);
            padding: 2rem 1.8rem;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(26, 42, 108, 0.12);
        }
        .feature-card .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 1.25rem auto;
            background: linear-gradient(135deg, rgba(26, 42, 108, 0.06), rgba(230, 57, 70, 0.06));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
            padding: 2rem 1.2rem;
            cursor: pointer;
        }
        .category-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(26, 42, 108, 0.15);
        }
        .category-card .cat-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 1rem auto;
            background: var(--bg-light);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .category-card:hover .cat-icon {
            background: var(--primary);
            color: #fff;
        }
        .category-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
        }
        .category-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .category-card .cat-link {
            position: absolute;
            inset: 0;
            z-index: 2;
        }

        /* ===== Latest Posts ===== */
        .post-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.8rem;
        }
        .post-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .post-card .post-thumb {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-bottom: 1px solid var(--border-light);
        }
        .post-card .post-body {
            padding: 1.25rem 1.5rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .post-card .post-category {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(26, 42, 108, 0.06);
            padding: 0.2rem 0.75rem;
            border-radius: 50px;
            margin-bottom: 0.6rem;
            align-self: flex-start;
            border: 1px solid rgba(26, 42, 108, 0.08);
        }
        .post-card .post-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            line-height: 1.4;
            color: var(--text-dark);
            flex: 1;
        }
        .post-card .post-title a {
            color: inherit;
            text-decoration: none;
        }
        .post-card .post-title a:hover {
            color: var(--primary);
        }
        .post-card .post-excerpt {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0.75rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding-top: 0.75rem;
            border-top: 1px solid var(--border-light);
            margin-top: auto;
        }
        .post-card .post-meta i {
            margin-right: 0.25rem;
        }
        .empty-posts {
            text-align: center;
            padding: 3rem 1rem;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--bg-light);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }

        /* ===== Stats / 数据 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            text-align: center;
        }
        .stats-grid .stat-card {
            padding: 1.5rem 1rem;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .stats-grid .stat-card:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-2px);
        }
        .stats-grid .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 0.75rem;
        }
        .stats-grid .stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stats-grid .stat-card .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 0.25rem;
        }

        /* ===== Process / 流程 ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            padding: 2rem 1.2rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .process-step .step-number {
            width: 48px;
            height: 48px;
            margin: 0 auto 1.2rem auto;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            transition: var(--transition);
        }
        .process-step:hover .step-number {
            background: var(--secondary);
            transform: scale(1.08);
        }
        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(26, 42, 108, 0.15);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.4rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            cursor: pointer;
            transition: var(--transition);
            gap: 1rem;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 1.4rem 1.1rem;
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 1.8rem auto;
        }
        .cta-section .btn {
            padding: 0.95rem 2.6rem;
            font-size: 1.05rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.6);
            padding: 3rem 0 1.5rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .site-footer .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .site-footer .footer-brand .logo-text i {
            color: var(--secondary);
        }
        .site-footer .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }
        .site-footer ul li {
            margin-bottom: 0.5rem;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .site-footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            margin-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
            text-decoration: none;
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }
        .site-footer .footer-social {
            display: flex;
            gap: 0.75rem;
        }
        .site-footer .footer-social a {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-social a:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 2.8rem;
            }
            .section-title {
                font-size: 1.9rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .cta-section {
                padding: 2.5rem 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-list {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 1rem 0;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
                gap: 0;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list .nav-item {
                width: 100%;
            }
            .nav-list .nav-link {
                padding: 0.75rem 1.5rem;
                border-radius: 0;
                justify-content: center;
            }
            .nav-list .nav-link.active {
                background: rgba(26, 42, 108, 0.06);
                color: var(--primary);
                box-shadow: none;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 0.5rem;
                text-align: center;
                padding: 0.5rem 1.5rem;
            }
            .nav-toggle {
                display: block;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-content .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 1.5rem;
            }
            .hero-stats .stat-item .stat-number {
                font-size: 1.4rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .post-list {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .cta-section {
                padding: 2rem 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-padding {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
        }

        @media (max-width: 520px) {
            .site-header .container {
                height: 60px;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .site-logo i {
                font-size: 1.2rem;
            }
            .hero-section {
                min-height: 90vh;
                padding-top: 60px;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-content .hero-desc {
                font-size: 0.92rem;
            }
            .hero-content .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-content .hero-actions .btn {
                text-align: center;
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 0.75rem;
                align-items: center;
                text-align: center;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .post-list {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .stats-grid .stat-card .stat-number {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-padding {
                padding-top: 2.5rem;
                padding-bottom: 2.5rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.92rem;
            }
            .faq-question {
                font-size: 0.92rem;
                padding: 0.9rem 1.1rem;
            }
            .faq-answer {
                padding: 0 1.1rem 0.9rem;
                font-size: 0.88rem;
            }
            .card-custom .card-body {
                padding: 1.1rem;
            }
            .post-card .post-body {
                padding: 1rem 1.1rem 1.2rem;
            }
        }

        @media (min-width: 769px) {
            .nav-list {
                display: flex !important;
            }
        }

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

        /* ===== Smooth Image Loading ===== */
        img {
            background: var(--bg-light);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --secondary: #e67e22;
            --secondary-light: #f0a04b;
            --secondary-dark: #c96b1a;
            --accent: #27ae60;
            --accent-light: #2ecc71;
            --bg-light: #f8f9fb;
            --bg-white: #ffffff;
            --bg-dark: #0f2440;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #7a7a9a;
            --text-white: #ffffff;
            --border-color: #e8ecf1;
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --border-radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.15);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }

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

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
            text-decoration: none;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        ul,
        ol {
            padding-left: 1.25rem;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* ===== 头部的导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }

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

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            transform: scale(1.02);
            color: var(--primary);
        }

        /* 导航列表 */
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--border-radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link i {
            font-size: 0.9rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.06);
            transform: translateY(-1px);
        }
        .nav-link:hover i {
            color: var(--secondary);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.08);
            font-weight: 600;
        }
        .nav-link.active i {
            color: var(--secondary);
        }

        .nav-cta {
            margin-left: 12px;
        }

        .nav-cta .btn {
            padding: 8px 22px;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.3px;
        }

        /* 移动端汉堡按钮 */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 8px 12px;
            border-radius: var(--border-radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(26, 58, 92, 0.06);
        }
        .nav-toggle:focus {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            line-height: 1.4;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            letter-spacing: 0.2px;
        }
        .btn:focus {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(26, 58, 92, 0.25);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 58, 92, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 58, 92, 0.2);
        }

        .btn-secondary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(230, 126, 34, 0.25);
        }
        .btn-secondary:hover {
            background: linear-gradient(135deg, var(--secondary-dark), var(--secondary));
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 126, 34, 0.35);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(230, 126, 34, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
        }
        .page-banner h1 i {
            color: var(--secondary-light);
            margin-right: 12px;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 20px;
            line-height: 1.8;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 12px;
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--secondary-light);
        }
        .page-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .page-banner .breadcrumb .current {
            color: var(--secondary-light);
            font-weight: 600;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-sm {
            padding: 50px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header h2 i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-dark .section-header h2 {
            color: var(--text-white);
        }
        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-white);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-custom:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }

        .card-custom .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }
        .card-custom .card-body {
            padding: 24px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-custom .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(230, 126, 34, 0.1);
            color: var(--secondary-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            width: fit-content;
        }
        .card-custom h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-custom p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }
        .card-custom .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--border-color);
        }
        .card-custom .card-meta i {
            margin-right: 4px;
        }
        .card-custom .card-link {
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
            margin-top: 8px;
        }
        .card-custom .card-link:hover {
            color: var(--secondary);
            gap: 10px;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge-custom {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--bg-light);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .badge-custom i {
            font-size: 0.7rem;
        }
        .badge-custom:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }
        .badge-custom.active {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }

        .badge-hot {
            background: #fee2e2;
            color: #dc2626;
            border-color: #fecaca;
        }
        .badge-new {
            background: #d1fae5;
            color: #059669;
            border-color: #a7f3d0;
        }
        .badge-top {
            background: #fef3c7;
            color: #d97706;
            border-color: #fde68a;
        }

        /* ===== 赛事分类导航 ===== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .category-tabs .tab-btn {
            padding: 10px 24px;
            border-radius: var(--border-radius-sm);
            border: 2px solid var(--border-color);
            background: var(--bg-white);
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .category-tabs .tab-btn i {
            color: var(--text-light);
            transition: var(--transition);
        }
        .category-tabs .tab-btn:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .category-tabs .tab-btn:hover i {
            color: var(--secondary);
        }
        .category-tabs .tab-btn.active {
            border-color: var(--primary);
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(26, 58, 92, 0.2);
        }
        .category-tabs .tab-btn.active i {
            color: var(--secondary-light);
        }
        .category-tabs .tab-btn:focus {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        /* ===== 特色数据块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: var(--bg-white);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item .stat-number span {
            color: var(--secondary);
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-light);
            font-weight: 500;
        }
        .stat-item i {
            font-size: 1.8rem;
            color: var(--secondary);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== 内容列表 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-list .list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-white);
            border-radius: var(--border-radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: default;
        }
        .content-list .list-item:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-sm);
            border-color: var(--primary-light);
        }
        .content-list .list-item .item-index {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .content-list .list-item .item-index.hot {
            background: var(--secondary);
        }
        .content-list .list-item .item-content {
            flex: 1;
        }
        .content-list .list-item .item-content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 2px;
        }
        .content-list .list-item .item-content p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0;
        }
        .content-list .list-item .item-meta {
            font-size: 0.8rem;
            color: var(--text-light);
            white-space: nowrap;
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--border-radius-sm);
            border: 1px solid var(--border-color);
            padding: 20px 24px;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--primary-light);
        }
        .faq-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-item h4 i {
            color: var(--secondary);
            font-size: 0.9rem;
        }
        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            padding-left: 26px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .btn {
            margin: 4px 8px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .logo-text i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 360px;
        }
        .site-footer h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            background: var(--secondary);
            border-radius: 3px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer ul li a:hover {
            color: var(--secondary-light);
            transform: translateX(4px);
        }
        .site-footer ul li a i {
            font-size: 0.8rem;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: var(--text-white);
            transform: translateY(-3px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }

            .site-header .container {
                padding: 0 16px;
            }

            .nav-toggle {
                display: block;
            }

            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
                align-items: stretch;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-item {
                width: 100%;
            }
            .nav-link {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--border-radius-sm);
                font-size: 1rem;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }

            .page-banner {
                padding: 60px 0 40px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner p {
                font-size: 1rem;
            }

            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }

            .category-tabs {
                gap: 8px;
            }
            .category-tabs .tab-btn {
                padding: 8px 16px;
                font-size: 0.85rem;
            }

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

            .content-list .list-item {
                flex-wrap: wrap;
            }
            .content-list .list-item .item-meta {
                width: 100%;
                text-align: left;
                padding-left: 52px;
            }

            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .btn {
                width: 100%;
                justify-content: center;
                margin: 6px 0;
            }

            .faq-item h4 {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner h1 i {
                display: block;
                margin-bottom: 8px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 18px 12px;
            }
            .stat-item .stat-number {
                font-size: 1.5rem;
            }
            .category-tabs .tab-btn {
                font-size: 0.8rem;
                padding: 6px 12px;
            }
            .card-custom .card-img {
                height: 160px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .site-logo {
                font-size: 1.15rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mt-2 {
            margin-top: 24px;
        }
        .mt-3 {
            margin-top: 40px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .mb-2 {
            margin-bottom: 24px;
        }
        .gap-1 {
            gap: 12px;
        }
        .gap-2 {
            gap: 24px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d6b3e;
            --primary-dark: #094d2c;
            --primary-light: #e8f5ee;
            --primary-glow: rgba(13, 107, 62, 0.15);
            --accent: #f5b342;
            --accent-dark: #d4942e;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0a1a0f;
            --bg-section-alt: #f0f4f1;
            --text-dark: #1a2a1f;
            --text-body: #2d3a32;
            --text-muted: #6b7a72;
            --text-light: #e8ede9;
            --border-color: #dce3dd;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 8px rgba(0, 20, 0, 0.06);
            --shadow-md: 0 8px 28px rgba(0, 20, 0, 0.08);
            --shadow-lg: 0 20px 48px rgba(0, 20, 0, 0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header / Nav (卡片化导航面板) ===== */
        .site-header {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(6px);
            background: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid var(--border-color);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
            padding-top: 0;
            padding-bottom: 0;
            min-height: 68px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--primary-dark);
            text-decoration: none;
            flex-shrink: 0;
        }
        .site-logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            opacity: 0.85;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-link i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .nav-link:hover i {
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px var(--primary-glow);
        }
        .nav-link.active i {
            color: #fff;
        }

        .nav-cta {
            margin-left: 12px;
        }
        .nav-cta .btn {
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px var(--primary-glow);
            transition: var(--transition);
        }
        .nav-cta .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px var(--primary-glow);
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #0f2a18 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .article-banner .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 16px;
            font-size: 0.9rem;
        }
        .article-banner .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.7);
        }
        .article-banner .breadcrumb-item a:hover {
            color: #fff;
        }
        .article-banner .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.4);
        }
        .article-banner .breadcrumb-item.active {
            color: var(--accent);
        }
        .article-banner h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            max-width: 860px;
            margin-bottom: 12px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
        }
        .article-meta .badge-category {
            background: var(--accent);
            color: var(--bg-dark);
            padding: 4px 16px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.8rem;
        }
        .article-meta i {
            margin-right: 6px;
            opacity: 0.7;
        }

        /* ===== 文章正文 ===== */
        .article-main {
            padding: 50px 0 60px;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 40px 48px;
            border: 1px solid var(--border-color);
        }
        .article-content .content-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-content .content-body p {
            margin-bottom: 1.2rem;
        }
        .article-content .content-body h2,
        .article-content .content-body h3 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            color: var(--text-dark);
            font-weight: 700;
        }
        .article-content .content-body h2 {
            font-size: 1.6rem;
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 8px;
        }
        .article-content .content-body h3 {
            font-size: 1.25rem;
        }
        .article-content .content-body ul,
        .article-content .content-body ol {
            margin-bottom: 1.2rem;
        }
        .article-content .content-body li {
            margin-bottom: 0.4rem;
        }
        .article-content .content-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content .content-body a:hover {
            color: var(--primary-dark);
        }
        .article-content .content-body img {
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content .content-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 12px 20px;
            background: var(--primary-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            color: var(--text-dark);
            font-style: italic;
        }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .article-not-found i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: block;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-not-found .btn {
            border-radius: 50px;
            padding: 10px 32px;
        }

        /* ===== 相关文章 ===== */
        .related-section {
            background: var(--bg-section-alt);
            padding: 50px 0 60px;
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 32px;
            position: relative;
            padding-left: 18px;
        }
        .related-section .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: var(--primary);
            border-radius: 4px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-card .card-img {
            height: 180px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body .badge {
            align-self: flex-start;
            margin-bottom: 10px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
        }
        .related-card .card-body h5 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h5 a {
            color: inherit;
            text-decoration: none;
        }
        .related-card .card-body h5 a:hover {
            color: var(--primary);
        }
        .related-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
            flex: 1;
        }
        .related-card .card-body .meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }

        /* ===== CTA 区块 ===== */
        .article-cta {
            padding: 50px 0;
            background: var(--bg-card);
        }
        .article-cta .cta-box {
            background: linear-gradient(135deg, var(--bg-dark), #0f2a18);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .article-cta .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .article-cta .cta-box * {
            position: relative;
            z-index: 1;
        }
        .article-cta .cta-box h3 {
            color: #fff;
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .article-cta .cta-box p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            max-width: 620px;
            margin: 0 auto 24px;
        }
        .article-cta .cta-box .btn {
            padding: 12px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            background: var(--accent);
            border: none;
            color: var(--bg-dark);
            box-shadow: 0 6px 24px rgba(245, 179, 66, 0.35);
            transition: var(--transition);
        }
        .article-cta .cta-box .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(245, 179, 66, 0.45);
            background: #e8a73a;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 50px 0 30px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .site-footer .footer-brand .logo-text {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-footer .footer-brand .logo-text i {
            color: var(--accent);
        }
        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .site-footer h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer ul li a i {
            width: 18px;
            text-align: center;
            font-size: 0.85rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 1rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--bg-dark);
            transform: scale(1.1);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .article-content {
                padding: 30px 28px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-card);
                padding: 16px 20px;
                box-shadow: var(--shadow-md);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                border-top: 1px solid var(--border-color);
                gap: 4px;
                align-items: stretch;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-item {
                width: 100%;
            }
            .nav-link {
                padding: 12px 16px;
                justify-content: flex-start;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                text-align: center;
                justify-content: center;
            }

            .article-banner h1 {
                font-size: 1.6rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.85rem;
            }
            .article-content {
                padding: 20px 18px;
            }
            .article-content .content-body {
                font-size: 0.98rem;
            }
            .article-cta .cta-box {
                padding: 32px 20px;
            }
            .article-cta .cta-box h3 {
                font-size: 1.4rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .related-card .card-img {
                height: 140px;
            }
        }

        @media (max-width: 520px) {
            .site-header .container {
                min-height: 58px;
            }
            .site-logo {
                font-size: 1.2rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
            .article-banner {
                padding: 40px 0 32px;
                min-height: 200px;
            }
            .article-banner h1 {
                font-size: 1.3rem;
            }
            .article-meta {
                font-size: 0.8rem;
                gap: 8px;
            }
            .article-main {
                padding: 30px 0 40px;
            }
            .article-content {
                padding: 16px 14px;
                border-radius: var(--radius-sm);
            }
            .article-content .content-body {
                font-size: 0.92rem;
            }
            .related-section .section-title {
                font-size: 1.3rem;
            }
            .article-cta .cta-box h3 {
                font-size: 1.2rem;
            }
            .article-cta .cta-box p {
                font-size: 0.9rem;
            }
        }

        /* ===== 工具类 ===== */
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }
        .btn-outline-primary {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
        }
        .text-primary {
            color: var(--primary) !important;
        }
        .bg-primary-light {
            background: var(--primary-light);
        }
        .rounded-custom {
            border-radius: var(--radius-md);
        }
        .shadow-custom {
            box-shadow: var(--shadow-sm);
        }