/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #DC2626;
            --primary-dark: #B91C1C;
            --primary-light: #FEE2E2;
            --secondary: #1E293B;
            --secondary-light: #334155;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-light: #F8FAFC;
            --bg-dark: #0F172A;
            --text-primary: #1E293B;
            --text-secondary: #64748B;
            --text-light: #F1F5F9;
            --text-muted: #94A3B8;
            --border-color: #E2E8F0;
            --border-light: #F1F5F9;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-section: 5rem;
        }

        /* ========== 基础 Reset ========== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea, select { font-family: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
        h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
        h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
        h4 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
        p { margin-bottom: 0; }

        /* ========== 容器 ========== */
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
        .container-wide { max-width: 1400px; }

        /* ========== 导航 ========== */
        .navbar-custom {
            background: var(--bg-dark);
            padding: 0.75rem 0;
            border-bottom: 2px solid var(--primary);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition);
        }
        .navbar-custom .navbar-brand {
            color: #fff;
            font-weight: 800;
            font-size: 1.5rem;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-custom .navbar-brand i {
            color: var(--primary);
            font-size: 1.8rem;
        }
        .navbar-custom .navbar-brand:hover {
            color: var(--primary);
        }
        .navbar-custom .nav-link {
            color: rgba(255,255,255,0.8) !important;
            font-weight: 500;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-size: 0.95rem;
            position: relative;
        }
        .navbar-custom .nav-link:hover {
            color: #fff !important;
            background: rgba(255,255,255,0.08);
        }
        .navbar-custom .nav-link.active {
            color: #fff !important;
            background: var(--primary) !important;
        }
        .navbar-custom .nav-link.active::after {
            display: none;
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid rgba(255,255,255,0.3);
            padding: 0.4rem 0.6rem;
            color: #fff;
        }
        .navbar-custom .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--primary);
        }
        .navbar-custom .navbar-toggler-icon {
            filter: invert(1);
        }
        @media (max-width: 991.98px) {
            .navbar-custom .navbar-collapse {
                background: var(--bg-dark);
                padding: 1rem 0;
                border-top: 1px solid rgba(255,255,255,0.1);
                margin-top: 0.5rem;
            }
            .navbar-custom .nav-link {
                padding: 0.6rem 1rem !important;
            }
        }

        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(15,23,42,0.6) 50%, rgba(220,38,38,0.3) 100%);
            z-index: 1;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-light), transparent);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 860px;
            padding: 2rem 1.5rem;
        }
        .hero-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 0.4rem 1.4rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 1.5rem;
            text-transform: uppercase;
            box-shadow: 0 4px 15px rgba(220,38,38,0.4);
        }
        .hero-title {
            color: #fff;
            font-weight: 800;
            margin-bottom: 1.2rem;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .hero-title span {
            color: var(--accent);
        }
        .hero-desc {
            color: rgba(255,255,255,0.85);
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 2.2rem;
            line-height: 1.8;
            text-shadow: 0 1px 10px rgba(0,0,0,0.2);
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
        }
        .hero-actions .btn {
            padding: 0.8rem 2.4rem;
            font-weight: 600;
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .hero-actions .btn-primary {
            background: var(--primary);
            border: 2px solid var(--primary);
            color: #fff;
        }
        .hero-actions .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(220,38,38,0.4);
        }
        .hero-actions .btn-outline-light {
            border: 2px solid rgba(255,255,255,0.5);
            color: #fff;
            background: transparent;
        }
        .hero-actions .btn-outline-light:hover {
            background: rgba(255,255,255,0.15);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            justify-content: center;
            margin-top: 3.5rem;
            padding-top: 2.5rem;
            border-top: 1px solid rgba(255,255,255,0.15);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .number {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.2;
        }
        .hero-stat-item .number i {
            color: var(--accent);
            font-size: 1.6rem;
            margin-right: 0.3rem;
        }
        .hero-stat-item .label {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            font-weight: 400;
            margin-top: 0.2rem;
        }
        @media (max-width: 767.98px) {
            .hero-section { min-height: 70vh; }
            .hero-stats { gap: 1.5rem; }
            .hero-stat-item .number { font-size: 1.6rem; }
        }

        /* ========== 板块通用 ========== */
        .section-padding { padding: var(--spacing-section) 0; }
        .section-title {
            text-align: center;
            margin-bottom: 1rem;
            font-weight: 800;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 3rem;
            font-size: 1.05rem;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0.8rem auto 1.2rem;
        }
        .section-divider.light { background: var(--accent); }

        /* ========== 平台简介 ========== */
        .intro-section {
            background: #fff;
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: var(--transition);
        }
        .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-text h2 {
            margin-bottom: 1rem;
        }
        .intro-text p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
            font-size: 1.02rem;
            line-height: 1.8;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .intro-feature-item {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            font-weight: 500;
            font-size: 0.95rem;
        }
        .intro-feature-item i {
            color: var(--primary);
            font-size: 1.1rem;
            width: 24px;
            text-align: center;
        }
        @media (max-width: 767.98px) {
            .intro-grid { grid-template-columns: 1fr; gap: 2rem; }
            .intro-features { grid-template-columns: 1fr; }
            .intro-image img { height: 260px; }
        }

        /* ========== 分类入口 ========== */
        .category-section {
            background: var(--bg-light);
        }
        .category-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            border: 1px solid var(--border-color);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        .category-card .card-img {
            height: 200px;
            object-fit: cover;
            width: 100%;
        }
        .category-card .card-body {
            padding: 1.5rem;
        }
        .category-card .card-body h4 {
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .category-card .card-body p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }
        .category-card .card-body .btn {
            font-weight: 600;
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            font-size: 0.85rem;
        }
        .category-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 0.7rem;
        }

        /* ========== 最新资讯 (CMS) ========== */
        .news-section {
            background: #fff;
        }
        .news-card {
            display: flex;
            gap: 1.5rem;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 1.2rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
        }
        .news-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .news-card .news-img {
            width: 180px;
            min-width: 180px;
            height: 130px;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }
        .news-card .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-content h5 {
            font-weight: 700;
            margin-bottom: 0.4rem;
            font-size: 1.05rem;
            line-height: 1.4;
        }
        .news-card .news-content h5 a {
            color: var(--text-primary);
        }
        .news-card .news-content h5 a:hover {
            color: var(--primary);
        }
        .news-card .news-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            gap: 1rem;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
        }
        .news-meta i {
            margin-right: 0.3rem;
        }
        .news-meta .category-badge {
            background: var(--primary-light);
            color: var(--primary);
            padding: 0.1rem 0.7rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .news-empty {
            text-align: center;
            padding: 3rem 1rem;
            color: var(--text-secondary);
            background: var(--bg-light);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        .news-empty i {
            font-size: 2.5rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }
        @media (max-width: 767.98px) {
            .news-card { flex-direction: column; }
            .news-card .news-img { width: 100%; min-width: unset; height: 200px; }
        }

        /* ========== 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-attachment: fixed;
            position: relative;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15,23,42,0.85);
        }
        .stats-section .container { position: relative; z-index: 1; }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stat-item {
            padding: 2rem 1rem;
        }
        .stat-item .icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 0.8rem;
        }
        .stat-item .number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-item .label {
            color: rgba(255,255,255,0.6);
            font-size: 1rem;
            margin-top: 0.3rem;
        }
        @media (max-width: 767.98px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
            .stat-item .number { font-size: 2rem; }
        }

        /* ========== 特色优势 ========== */
        .features-section {
            background: var(--bg-light);
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        .feature-card .icon {
            width: 60px;
            height: 60px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin: 0 auto 1.2rem;
            transition: var(--transition);
        }
        .feature-card:hover .icon {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h4 {
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .feature-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: #fff;
        }
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.8rem;
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            color: var(--text-primary);
            background: #fff;
            padding: 1.2rem 1.5rem;
            font-size: 1rem;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-light);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 2px var(--primary);
        }
        .faq-accordion .accordion-button::after {
            background-size: 1.2rem;
        }
        .faq-accordion .accordion-body {
            padding: 1.2rem 1.5rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(220,38,38,0.85) 0%, rgba(15,23,42,0.9) 100%);
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-content {
            text-align: center;
            padding: 3rem 1rem;
        }
        .cta-content h2 {
            color: #fff;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .cta-content p {
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 2rem;
            font-size: 1.1rem;
        }
        .cta-content .btn {
            padding: 0.9rem 2.8rem;
            font-weight: 700;
            border-radius: 50px;
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .cta-content .btn-primary {
            background: var(--accent);
            border: 2px solid var(--accent);
            color: var(--bg-dark);
        }
        .cta-content .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(245,158,11,0.4);
        }
        .cta-content .btn-outline-light {
            border: 2px solid rgba(255,255,255,0.5);
            color: #fff;
            background: transparent;
            margin-left: 0.8rem;
        }
        .cta-content .btn-outline-light:hover {
            background: rgba(255,255,255,0.15);
            border-color: #fff;
        }

        /* ========== 页脚 ========== */
        .footer-section {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 3.5rem 0 0;
        }
        .footer-brand {
            color: #fff;
            font-weight: 800;
            font-size: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .footer-brand i { color: var(--primary); }
        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
            max-width: 320px;
        }
        .footer-section h5 {
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 1.2rem;
        }
        .footer-links li {
            margin-bottom: 0.6rem;
        }
        .footer-links a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 0.8rem;
            margin-top: 1rem;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.6);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 1.5rem 0;
            margin-top: 2.5rem;
            text-align: center;
            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(--primary);
        }

        /* ========== 按钮通用 ========== */
        .btn-primary-custom {
            background: var(--primary);
            border: 2px solid var(--primary);
            color: #fff;
            padding: 0.6rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(220,38,38,0.35);
            color: #fff;
        }
        .btn-outline-custom {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
            padding: 0.6rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== 响应式微调 ========== */
        @media (max-width: 991.98px) {
            :root { --spacing-section: 3.5rem; }
        }
        @media (max-width: 767.98px) {
            :root { --spacing-section: 2.8rem; }
            .hero-actions .btn { padding: 0.6rem 1.6rem; font-size: 0.9rem; }
            .cta-content .btn { padding: 0.7rem 1.8rem; font-size: 0.95rem; }
            .cta-content .btn-outline-light { margin-left: 0; margin-top: 0.5rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 1rem; }
            .hero-stats { flex-direction: column; gap: 1rem; }
            .stats-grid { grid-template-columns: 1fr; }
            .intro-features { grid-template-columns: 1fr; }
            .news-card .news-img { height: 160px; }
        }

        /* ========== 辅助 ========== */
        .text-primary-custom { color: var(--primary) !important; }
        .bg-primary-custom { background: var(--primary) !important; }
        .text-accent { color: var(--accent) !important; }
        .fw-800 { font-weight: 800; }
        .gap-1rem { gap: 1rem; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #c62828;
            --primary-dark: #8e0000;
            --primary-light: #ff5f52;
            --secondary: #1a1a2e;
            --accent: #ffb300;
            --bg-dark: #0f0f1a;
            --bg-card: #ffffff;
            --bg-light: #f5f5f5;
            --text-dark: #1a1a2e;
            --text-muted: #6c757d;
            --text-light: #ffffff;
            --border-color: #e0e0e0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1280px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-dark);
            background: var(--bg-light);
            overflow-x: hidden;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; }
        ul { list-style: none; padding-left: 0; }

        /* ===== 容器 ===== */
        .container { max-width: var(--container-max); padding-left: 20px; padding-right: 20px; }
        @media (min-width: 1400px) {
            .container { max-width: var(--container-max); }
        }

        /* ===== 导航 ===== */
        .navbar-custom {
            background: rgba(15,15,26,0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            padding: 0.6rem 0;
            transition: var(--transition);
            position: sticky;
            top: 0;
            z-index: 1050;
        }
        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--text-light);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .navbar-custom .navbar-brand i { color: var(--primary-light); font-size: 1.4rem; }
        .navbar-custom .navbar-brand:hover { color: var(--text-light); }
        .navbar-custom .nav-link {
            color: rgba(255,255,255,0.75) !important;
            font-weight: 500;
            font-size: 1rem;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus-visible {
            color: var(--text-light) !important;
            background: rgba(255,255,255,0.08);
        }
        .navbar-custom .nav-link.active {
            color: var(--text-light) !important;
            background: rgba(198,40,40,0.25);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary-light);
            border-radius: 4px;
        }
        .navbar-custom .navbar-toggler {
            border-color: rgba(255,255,255,0.2);
            padding: 6px 10px;
        }
        .navbar-custom .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        @media (max-width: 991.98px) {
            .navbar-custom .navbar-collapse {
                background: rgba(15,15,26,0.98);
                border-radius: var(--radius-md);
                padding: 1rem;
                margin-top: 0.5rem;
                border: 1px solid rgba(255,255,255,0.06);
            }
            .navbar-custom .nav-link { padding: 0.6rem 1rem !important; }
            .navbar-custom .nav-link.active::after { display: none; }
        }

        /* ===== 文章头部 ===== */
        .article-header {
            background: var(--bg-dark);
            padding: 3rem 0 2.5rem;
            position: relative;
            overflow: hidden;
        }
        .article-header::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .article-header .container { position: relative; z-index: 1; }
        .article-header .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 1rem;
        }
        .article-header .breadcrumb-item,
        .article-header .breadcrumb-item a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
        }
        .article-header .breadcrumb-item a:hover { color: var(--text-light); }
        .article-header .breadcrumb-item.active { color: rgba(255,255,255,0.85); }
        .article-header .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.3); }
        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.3;
            margin-bottom: 1rem;
            letter-spacing: -0.3px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            color: rgba(255,255,255,0.6);
            font-size: 0.95rem;
        }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        .article-meta i { color: var(--primary-light); }
        .article-meta .badge-category {
            background: var(--primary);
            color: #fff;
            padding: 0.2rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* ===== 正文区域 ===== */
        .article-main {
            padding: 3rem 0 4rem;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 2.5rem 3rem;
            line-height: 1.9;
            font-size: 1.05rem;
            color: #2d2d3a;
        }
        .article-content p { margin-bottom: 1.5rem; }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        .article-content h2 { font-size: 1.6rem; }
        .article-content h3 { font-size: 1.35rem; }
        .article-content ul,
        .article-content ol { margin-bottom: 1.5rem; padding-left: 1.8rem; }
        .article-content li { margin-bottom: 0.5rem; }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(198,40,40,0.05);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-content a { color: var(--primary); font-weight: 500; }
        .article-content a:hover { text-decoration: underline; }
        .article-tags {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .article-tags .tag {
            background: var(--bg-light);
            color: var(--text-muted);
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 文章侧边栏 ===== */
        .article-sidebar .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .article-sidebar .sidebar-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            padding-bottom: 0.6rem;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        .article-sidebar .sidebar-list li {
            padding: 0.6rem 0;
            border-bottom: 1px solid rgba(0,0,0,0.04);
        }
        .article-sidebar .sidebar-list li:last-child { border-bottom: none; }
        .article-sidebar .sidebar-list a {
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .article-sidebar .sidebar-list a:hover { color: var(--primary); padding-left: 4px; }
        .article-sidebar .sidebar-list a i { color: var(--primary-light); font-size: 0.8rem; }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            text-align: center;
        }
        .sidebar-cta h5 { color: #fff; border-bottom-color: rgba(255,255,255,0.3); }
        .sidebar-cta p { font-size: 0.9rem; opacity: 0.85; margin-bottom: 1.2rem; }
        .sidebar-cta .btn {
            background: var(--accent);
            color: var(--text-dark);
            border: none;
            padding: 0.5rem 1.8rem;
            border-radius: 30px;
            font-weight: 700;
            transition: var(--transition);
        }
        .sidebar-cta .btn:hover { background: #ffca3a; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,179,0,0.3); }

        /* ===== 空状态 ===== */
        .not-found-block {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .not-found-block i { font-size: 3.5rem; color: var(--primary-light); margin-bottom: 1rem; }
        .not-found-block h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 0.8rem; }
        .not-found-block p { color: var(--text-muted); margin-bottom: 1.8rem; }
        .not-found-block .btn {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0.6rem 2rem;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-block .btn:hover { background: var(--primary-dark); transform: translateY(-2px); }

        /* ===== 页脚 ===== */
        .footer-section {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 3.5rem 0 0;
            border-top: 1px solid rgba(255,255,255,0.04);
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 0.8rem;
        }
        .footer-brand i { color: var(--primary-light); }
        .footer-desc { font-size: 0.92rem; line-height: 1.7; color: rgba(255,255,255,0.5); max-width: 360px; }
        .footer-social { display: flex; gap: 12px; margin-top: 1.2rem; }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .footer-section h5 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 1.2rem;
            position: relative;
            padding-bottom: 0.5rem;
        }
        .footer-section h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary-light);
            border-radius: 4px;
        }
        .footer-links { list-style: none; padding: 0; }
        .footer-links li { margin-bottom: 0.6rem; }
        .footer-links a {
            color: rgba(255,255,255,0.5);
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .footer-links a:hover { color: var(--text-light); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            margin-top: 2.5rem;
            padding: 1.5rem 0;
            text-align: center;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: var(--text-light); }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .article-header h1 { font-size: 1.7rem; }
            .article-content { padding: 1.8rem 1.5rem; }
            .article-sidebar { margin-top: 2rem; }
        }
        @media (max-width: 767.98px) {
            .article-header { padding: 2rem 0 1.8rem; }
            .article-header h1 { font-size: 1.4rem; }
            .article-meta { font-size: 0.85rem; gap: 0.8rem; }
            .article-main { padding: 2rem 0 3rem; }
            .article-content { padding: 1.2rem 1rem; font-size: 0.98rem; }
            .footer-section { padding: 2.5rem 0 0; }
            .footer-section .col-lg-2,
            .footer-section .col-lg-3,
            .footer-section .col-lg-4 { margin-bottom: 1.5rem; }
        }
        @media (max-width: 520px) {
            .article-header h1 { font-size: 1.2rem; }
            .article-meta { flex-direction: column; gap: 0.4rem; }
        }

        /* ===== Focus 可访问性 ===== */
        a:focus-visible,
        button:focus-visible,
        .navbar-custom .nav-link:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #dc2626;
            --primary-dark: #b91c1c;
            --primary-light: #fca5a5;
            --secondary: #1e293b;
            --secondary-light: #334155;
            --accent: #f59e0b;
            --bg-dark: #0f172a;
            --bg-card: #ffffff;
            --bg-soft: #f8fafc;
            --bg-section-alt: #f1f5f9;
            --text-dark: #0f172a;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-light: #e2e8f0;
            --border-card: #e9edf2;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
            --shadow-hover: 0 20px 40px rgba(220, 38, 38, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-soft);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        p {
            margin-bottom: 0.5rem;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 导航 ===== */
        .navbar-custom {
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            padding: 0.6rem 0;
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition);
        }
        .navbar-custom.scrolled {
            box-shadow: var(--shadow-md);
        }
        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0.3rem 0;
        }
        .navbar-custom .navbar-brand i {
            font-size: 1.6rem;
            color: var(--primary);
        }
        .navbar-custom .navbar-brand:hover {
            color: var(--primary-dark);
        }
        .navbar-custom .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--text-main);
            padding: 0.6rem 1.1rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
            font-size: 0.92rem;
        }
        .navbar-custom .navbar-nav .nav-link:hover,
        .navbar-custom .navbar-nav .nav-link:focus {
            color: var(--primary);
            background: rgba(220, 38, 38, 0.06);
        }
        .navbar-custom .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(220, 38, 38, 0.1);
        }
        .navbar-custom .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 1.1rem;
            right: 1.1rem;
            height: 3px;
            background: var(--primary);
            border-radius: 3px 3px 0 0;
        }
        .navbar-toggler {
            border: none;
            padding: 0.4rem 0.6rem;
            border-radius: var(--radius-sm);
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15,23,42,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width: 1.6em;
            height: 1.6em;
        }

        /* ===== 页脚 ===== */
        .footer-section {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 1.8rem;
            border-top: 4px solid var(--primary);
        }
        .footer-section .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 1rem;
        }
        .footer-section .footer-brand i {
            color: var(--primary);
        }
        .footer-section .footer-desc {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 1.2rem;
            max-width: 360px;
        }
        .footer-section .footer-social {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-section .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer-section .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(220, 38, 38, 0.3);
        }
        .footer-section h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            letter-spacing: 0.02em;
        }
        .footer-section .footer-links li {
            margin-bottom: 0.6rem;
        }
        .footer-section .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            transition: all var(--transition);
            padding: 0.1rem 0;
        }
        .footer-section .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-section .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-section .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-section .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(30, 41, 59, 0.92)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 5rem 1.5rem;
            border-bottom: 4px solid var(--primary);
        }
        .category-hero .hero-content {
            max-width: 800px;
            position: relative;
            z-index: 2;
        }
        .category-hero .hero-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
            padding: 0.3rem 1.2rem;
            border-radius: 50px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 1.2rem;
            border: 2px solid rgba(255, 255, 255, 0.2);
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 900;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin: 0 auto 1.8rem;
            line-height: 1.8;
        }
        .category-hero .hero-stats {
            display: flex;
            justify-content: center;
            gap: 2.5rem;
            flex-wrap: wrap;
            margin-top: 1.5rem;
        }
        .category-hero .hero-stats .stat-item {
            text-align: center;
        }
        .category-hero .hero-stats .stat-number {
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
        }
        .category-hero .hero-stats .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 0.02em;
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding: 5rem 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-title-wrap {
            text-align: center;
            margin-bottom: 3.5rem;
        }
        .section-title-wrap .section-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 1.2rem;
            border-radius: 50px;
            letter-spacing: 0.05em;
            margin-bottom: 0.8rem;
            text-transform: uppercase;
        }
        .section-title-wrap h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 0.8rem;
        }
        .section-title-wrap p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
        }

        /* ===== 卡片通用 ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .card-custom .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-soft);
        }
        .card-custom .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card-custom:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .card-custom .card-img-wrap .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.2rem 0.9rem;
            border-radius: 50px;
            letter-spacing: 0.03em;
            z-index: 2;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .card-custom .card-body {
            padding: 1.3rem 1.4rem 1.6rem;
        }
        .card-custom .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 0.5rem;
        }
        .card-custom .card-body .card-meta i {
            margin-right: 4px;
        }
        .card-custom .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .card-custom .card-body h3 a {
            color: var(--text-dark);
        }
        .card-custom .card-body h3 a:hover {
            color: var(--primary);
        }
        .card-custom .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .card-custom .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--primary);
            margin-top: 0.6rem;
            transition: gap var(--transition);
        }
        .card-custom .card-body .card-link:hover {
            gap: 12px;
        }

        /* ===== 分类入口卡片 ===== */
        .cat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
            cursor: default;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .cat-card .cat-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 1rem;
            background: rgba(220, 38, 38, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            transition: all var(--transition);
        }
        .cat-card:hover .cat-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .cat-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .cat-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 特色列表 ===== */
        .feature-list {
            display: grid;
            gap: 1.2rem;
        }
        .feature-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            padding: 1.2rem 1.4rem;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-card);
            transition: all var(--transition);
        }
        .feature-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .feature-item .feature-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: rgba(220, 38, 38, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--primary);
        }
        .feature-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.2rem;
        }
        .feature-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-sm);
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-question {
            padding: 1.1rem 1.4rem;
            font-weight: 700;
            font-size: 0.98rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-item .faq-question:hover {
            background: rgba(220, 38, 38, 0.04);
        }
        .faq-item .faq-question i {
            font-size: 0.85rem;
            color: var(--text-light);
            transition: transform var(--transition);
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 1.4rem 1.2rem;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 4rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.8rem;
            position: relative;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 1.8rem;
            position: relative;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 1rem;
            padding: 0.8rem 2.4rem;
            border-radius: 50px;
            border: none;
            transition: all var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            position: relative;
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
            background: #f8fafc;
        }

        /* ===== 按钮通用 ===== */
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            padding: 0.6rem 1.8rem;
            border-radius: 50px;
            border: 2px solid var(--primary);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(220, 38, 38, 0.25);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            font-weight: 700;
            padding: 0.6rem 1.8rem;
            border-radius: 50px;
            border: 2px solid var(--primary);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(220, 38, 38, 0.2);
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0.8rem auto 1.2rem;
        }
        .divider-left {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0.8rem 0 1.2rem;
        }

        /* ===== 文章列表（内页） ===== */
        .article-list-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .article-list-item:last-child {
            border-bottom: none;
        }
        .article-list-item .list-img {
            width: 120px;
            min-width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--bg-soft);
            flex-shrink: 0;
        }
        .article-list-item .list-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-list-item .list-content h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.2rem;
        }
        .article-list-item .list-content h4 a {
            color: var(--text-dark);
        }
        .article-list-item .list-content h4 a:hover {
            color: var(--primary);
        }
        .article-list-item .list-content p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0.2rem;
            line-height: 1.5;
        }
        .article-list-item .list-content .list-meta {
            font-size: 0.78rem;
            color: var(--text-light);
        }

        /* ===== 数据卡片 ===== */
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .stat-card .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-top: 0.3rem;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 2.4rem;
            }
            .section-title-wrap h2 {
                font-size: 1.8rem;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 320px;
                padding: 3.5rem 1.2rem;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero p {
                font-size: 0.95rem;
            }
            .category-hero .hero-stats {
                gap: 1.2rem;
            }
            .category-hero .hero-stats .stat-number {
                font-size: 1.5rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .section-title-wrap {
                margin-bottom: 2.2rem;
            }
            .section-title-wrap h2 {
                font-size: 1.5rem;
            }
            .section-title-wrap p {
                font-size: 0.92rem;
            }
            .card-custom .card-body {
                padding: 1rem 1.1rem 1.3rem;
            }
            .card-custom .card-body h3 {
                font-size: 1rem;
            }
            .cat-card {
                padding: 1.5rem 1rem;
            }
            .cat-card .cat-icon {
                width: 50px;
                height: 50px;
                font-size: 1.4rem;
            }
            .feature-item {
                padding: 1rem 1.1rem;
                flex-direction: column;
                gap: 0.6rem;
            }
            .feature-item .feature-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .article-list-item {
                flex-direction: column;
                gap: 0.8rem;
            }
            .article-list-item .list-img {
                width: 100%;
                min-width: unset;
                height: 160px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .cta-section {
                padding: 2.8rem 1.2rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-section {
                padding: 2.5rem 0 1.5rem;
            }
            .footer-section .footer-brand {
                font-size: 1.2rem;
            }
            .navbar-custom .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-custom .navbar-nav .nav-link {
                padding: 0.5rem 0.8rem;
                font-size: 0.88rem;
            }
            .navbar-custom .navbar-nav .nav-link.active::after {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.4rem;
            }
            .category-hero .hero-stats {
                flex-direction: column;
                gap: 0.8rem;
            }
            .section-title-wrap h2 {
                font-size: 1.3rem;
            }
            .card-custom .card-body h3 {
                font-size: 0.95rem;
            }
            .cat-card h3 {
                font-size: 0.95rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section .btn-cta {
                padding: 0.6rem 1.6rem;
                font-size: 0.9rem;
            }
            .footer-section .footer-social a {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
            }
        }

        /* ===== 辅助 ===== */
        .text-primary-custom {
            color: var(--primary);
        }
        .bg-primary-soft {
            background: rgba(220, 38, 38, 0.06);
        }
        .fw-800 {
            font-weight: 800;
        }
        .gap-1rem {
            gap: 1rem;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-1 {
            margin-top: 0.5rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }