/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f2440;
            --bg-sidebar: #132b44;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-light: #8a9aaa;
            --text-white: #f0f4f8;
            --border-color: #e0e6ed;
            --border-light: #eef2f6;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --sidebar-width: 260px;
            --sidebar-collapsed: 0px;
            --header-height: 0px;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: all 0.25s ease;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            display: flex;
            min-height: 100vh;
        }

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

        a:hover {
            color: var(--accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        .btn {
            transition: var(--transition);
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        /* ===== 左侧导航 ===== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            color: var(--text-white);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
            overflow-y: auto;
        }

        .sidebar-brand {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .sidebar-brand .brand-icon {
            width: 42px;
            height: 42px;
            background: var(--accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--bg-sidebar);
            font-weight: 700;
            flex-shrink: 0;
        }

        .sidebar-brand .brand-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.5px;
            line-height: 1.3;
        }

        .sidebar-brand .brand-text small {
            display: block;
            font-size: 0.7rem;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.5);
            letter-spacing: 1px;
        }

        .sidebar-nav {
            padding: 18px 16px;
            flex: 1;
        }

        .sidebar-nav .nav-label {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: rgba(255, 255, 255, 0.35);
            padding: 12px 10px 8px;
            font-weight: 600;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
            margin-bottom: 2px;
        }

        .sidebar-nav .nav-item i {
            width: 22px;
            text-align: center;
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }

        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
        }

        .sidebar-nav .nav-item:hover i {
            color: var(--accent);
        }

        .sidebar-nav .nav-item.active {
            background: rgba(232, 168, 56, 0.15);
            color: var(--accent);
            font-weight: 600;
        }

        .sidebar-nav .nav-item.active i {
            color: var(--accent);
        }

        .sidebar-footer {
            padding: 18px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.35);
            text-align: center;
        }

        /* ===== 主内容区 ===== */
        .app-main {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
            padding: 0;
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--bg-sidebar);
            z-index: 1060;
            padding: 0 20px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
        }

        .mobile-topbar .mobile-brand {
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.1rem;
        }

        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 6px 10px;
            cursor: pointer;
            border-radius: var(--radius-sm);
        }

        .mobile-topbar .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== 通用容器 ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            position: relative;
            padding: 100px 0 90px;
            background: linear-gradient(135deg, var(--bg-sidebar) 0%, #0a1a2e 100%);
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--accent));
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(232, 168, 56, 0.2);
            color: var(--accent-light);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            border: 1px solid rgba(232, 168, 56, 0.25);
        }

        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-title .highlight {
            color: var(--accent);
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 680px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--bg-sidebar);
            border: none;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.3px;
            box-shadow: 0 4px 20px rgba(232, 168, 56, 0.35);
            transition: var(--transition);
        }

        .btn-accent:hover {
            background: var(--accent-light);
            color: var(--bg-sidebar);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(232, 168, 56, 0.45);
        }

        .btn-outline-light-custom {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-stat-item {
            text-align: left;
        }

        .hero-stat-item .number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }

        .hero-stat-item .number span {
            color: var(--accent);
        }

        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 2px;
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: 80px 0;
        }

        .section-block-alt {
            background: var(--bg-white);
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-header .section-label {
            display: inline-block;
            background: rgba(232, 168, 56, 0.12);
            color: var(--accent-dark);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .card-feature {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .card-feature:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 168, 56, 0.2);
        }

        .card-feature .icon-wrap {
            width: 56px;
            height: 56px;
            background: rgba(232, 168, 56, 0.12);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-dark);
            margin-bottom: 20px;
        }

        .card-feature h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .card-feature p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            background: var(--bg-body);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .news-card .card-img {
            height: 200px;
            background: var(--border-light);
            overflow: hidden;
            position: relative;
        }

        .news-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .news-card:hover .card-img img {
            transform: scale(1.05);
        }

        .news-card .card-img .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: var(--bg-sidebar);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .news-card .card-body {
            padding: 24px 24px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .news-card .card-meta i {
            margin-right: 4px;
        }

        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-card h3 a {
            color: inherit;
        }

        .news-card h3 a:hover {
            color: var(--primary-light);
        }

        .news-card .card-excerpt {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }

        .news-card .card-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-card .card-link:hover {
            color: var(--accent-dark);
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-light);
            font-size: 1.05rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }

        /* ===== 分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .category-card .cat-img {
            height: 180px;
            background: var(--border-light);
            overflow: hidden;
        }

        .category-card .cat-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .category-card:hover .cat-img img {
            transform: scale(1.05);
        }

        .category-card .cat-body {
            padding: 24px 24px 28px;
        }

        .category-card .cat-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .category-card .cat-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .category-card .cat-body .cat-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .category-card .cat-body .cat-link:hover {
            color: var(--accent-dark);
        }

        /* ===== 数据/证据 ===== */
        .stats-section {
            background: var(--bg-sidebar);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

        .stats-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stats-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .stats-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 6px;
        }

        .stats-item .stat-desc {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
            margin-top: 2px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-body);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(232, 168, 56, 0.2);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
        }

        .faq-question i {
            color: var(--accent);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

        .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--bg-sidebar) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .cta-content p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .cta-content .btn-accent {
            padding: 16px 48px;
            font-size: 1.1rem;
        }

        /* ===== 页脚 ===== */
        .app-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.5);
            padding: 48px 0 36px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.88rem;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.3);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.3);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            .app-sidebar {
                transform: translateX(-100%);
            }
            .app-sidebar.open {
                transform: translateX(0);
            }
            .app-main {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                padding-top: 60px;
            }
            .hero-section {
                padding: 60px 0 60px;
                min-height: auto;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stat-item .number {
                font-size: 1.6rem;
            }
            .container-custom {
                padding: 0 20px;
            }
            .section-block {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-item .stat-number {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .news-card .card-img {
                height: 180px;
            }
            .cta-content h2 {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .hero-stat-item {
                text-align: center;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .container-custom {
                padding: 0 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .category-card .cat-img {
                height: 150px;
            }
            .news-card .card-img {
                height: 160px;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px 14px;
            }
        }

        /* ===== 遮罩 ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1045;
        }

        .sidebar-overlay.show {
            display: block;
        }

        @media (max-width: 768px) {
            .sidebar-overlay.show {
                display: block;
            }
        }

        /* ===== 辅助 ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-accent-soft {
            background: rgba(232, 168, 56, 0.08);
        }
        .fw-700 {
            font-weight: 700;
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 16px;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-2 {
            margin-top: 8px;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1e73be;
            --primary-dark: #155a9a;
            --primary-light: #e8f0fe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-sidebar: #0f172a;
            --bg-card: #ffffff;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 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);
            --transition: all 0.25s ease;
            --sidebar-width: 260px;
            --header-height: 0px;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-family);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            -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;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        ul {
            padding-left: 0;
            list-style: none;
            margin: 0;
        }

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

        /* ===== App Layout (Sidebar + Main) ===== */
        .app-layout {
            display: flex;
            min-height: 100vh;
        }

        /* ===== Sidebar ===== */
        .app-sidebar {
            width: var(--sidebar-width);
            background: var(--bg-sidebar);
            color: var(--text-white);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 24px 0 16px;
            overflow-y: auto;
            transition: transform 0.3s ease;
        }
        .sidebar-brand {
            padding: 0 20px 24px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 16px;
        }
        .sidebar-brand .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-brand .logo-text i {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .sidebar-brand .logo-sub {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: 2px;
            padding-left: 34px;
        }
        .nav-label {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: rgba(255,255,255,0.3);
            padding: 0 20px;
            margin: 16px 0 6px;
        }
        .sidebar-nav {
            flex: 1;
            padding: 0 12px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.65);
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
            margin-bottom: 2px;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
        }
        .nav-item:hover {
            background: rgba(255,255,255,0.08);
            color: #fff;
        }
        .nav-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(30,115,190,0.35);
        }
        .sidebar-footer {
            padding: 16px 20px 0;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.75rem;
            color: rgba(255,255,255,0.3);
            text-align: center;
        }

        /* ===== Main Content Area ===== */
        .app-main {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            padding: 32px 40px 40px;
            display: flex;
            flex-direction: column;
        }

        /* ===== Article Detail ===== */
        .article-header {
            margin-bottom: 32px;
        }
        .article-header .breadcrumb-custom {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .article-header .breadcrumb-custom a {
            color: var(--text-secondary);
        }
        .article-header .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .article-header .breadcrumb-custom span {
            color: var(--text-light);
        }
        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
            color: var(--text-secondary);
            font-size: 0.9rem;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }
        .article-meta i {
            margin-right: 6px;
        }
        .article-meta .badge-category {
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .article-body {
            padding: 28px 0 20px;
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-body p {
            margin-bottom: 1.4rem;
        }
        .article-body h2,
        .article-body h3 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .article-body h2 {
            font-size: 1.6rem;
        }
        .article-body h3 {
            font-size: 1.3rem;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 1.8rem auto;
            box-shadow: var(--shadow-md);
            max-width: 100%;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 1.6rem;
            margin-bottom: 1.4rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.6rem 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }

        /* ===== Article Not Found ===== */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found .not-found-icon {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .article-not-found h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .article-not-found .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-home:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ===== Related / Additional Sections ===== */
        .section-divider {
            border: 0;
            height: 1px;
            background: var(--border);
            margin: 40px 0 32px;
        }
        .related-articles {
            margin-top: 20px;
        }
        .related-articles h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-articles h3 i {
            color: var(--accent);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            transition: var(--transition);
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .related-card .rc-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .related-card .rc-title a {
            color: inherit;
        }
        .related-card .rc-title a:hover {
            color: var(--primary);
        }
        .related-card .rc-meta {
            font-size: 0.82rem;
            color: var(--text-light);
        }

        /* ===== FAQ Section in Article ===== */
        .article-faq {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            margin-top: 36px;
        }
        .article-faq h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-faq h3 i {
            color: var(--accent);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-question i {
            color: var(--text-light);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-answer {
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding-top: 10px;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .article-cta {
            background: linear-gradient(135deg, var(--primary) 0%, #0f4c81 100%);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            color: #fff;
            margin-top: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }
        .article-cta .cta-text h4 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .article-cta .cta-text p {
            margin: 0;
            opacity: 0.85;
            font-size: 0.95rem;
        }
        .article-cta .btn-cta {
            background: var(--accent);
            color: #1e293b;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .article-cta .btn-cta:hover {
            background: var(--accent-dark);
            color: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.35);
        }

        /* ===== Footer (shared style, inside app-main) ===== */
        .app-footer {
            margin-top: auto;
            border-top: 1px solid var(--border);
            padding-top: 40px;
            padding-bottom: 24px;
            background: transparent;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .app-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 28px;
        }
        .app-footer .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .app-footer .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        .app-footer .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .app-footer .footer-col ul li {
            margin-bottom: 6px;
        }
        .app-footer .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .app-footer .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .app-footer .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 18px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .app-footer .footer-bottom a {
            color: var(--text-light);
        }
        .app-footer .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== Article Share ===== */
        .article-share {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }
        .article-share span {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            transition: var(--transition);
            font-size: 1rem;
        }
        .article-share a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Mobile Sidebar Toggle ===== */
        .sidebar-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1050;
            background: var(--bg-sidebar);
            color: #fff;
            border: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }
        .sidebar-toggle:hover {
            background: var(--primary);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.45);
            z-index: 1035;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .app-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .sidebar-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .app-sidebar {
                transform: translateX(-100%);
            }
            .app-sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.active {
                display: block;
            }
            .app-main {
                margin-left: 0;
                padding: 24px 16px 32px;
            }
            .article-header h1 {
                font-size: 1.5rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 10px;
                align-items: flex-start;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .app-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-cta {
                flex-direction: column;
                text-align: center;
                padding: 28px 24px;
            }
            .article-cta .btn-cta {
                width: 100%;
                justify-content: center;
            }
            .article-faq {
                padding: 24px 20px;
            }
            .article-share {
                flex-wrap: wrap;
            }
            .app-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .app-main {
                padding: 16px 12px 24px;
            }
            .article-header h1 {
                font-size: 1.3rem;
            }
            .article-body {
                font-size: 0.98rem;
            }
            .article-cta .cta-text h4 {
                font-size: 1.05rem;
            }
            .article-faq h3 {
                font-size: 1.1rem;
            }
            .nav-label {
                font-size: 0.65rem;
            }
            .sidebar-brand .logo-text {
                font-size: 1.1rem;
            }
        }

        /* ===== Print ===== */
        @media print {
            .app-sidebar,
            .sidebar-toggle,
            .sidebar-overlay,
            .article-share,
            .article-cta {
                display: none !important;
            }
            .app-main {
                margin-left: 0 !important;
                padding: 20px !important;
            }
            .article-body {
                color: #000;
            }
            .article-faq {
                border: 1px solid #ddd;
                box-shadow: none;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-dark: #0f1a2e;
            --bg-darker: #0a1120;
            --bg-card: #ffffff;
            --bg-section: #f8f9fa;
            --bg-alt: #1a2d4a;
            --text-light: #f1faee;
            --text-dark: #1d3557;
            --text-muted: #6c757d;
            --text-body: #2b2d42;
            --border-light: rgba(255, 255, 255, 0.15);
            --border-card: #e9ecef;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
            --shadow-glow: 0 0 40px rgba(230, 57, 70, 0.25);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --sidebar-width: 240px;
            --header-height: 0px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-section);
            color: var(--text-body);
            line-height: 1.7;
            overflow-x: hidden;
            padding-top: 0;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
            padding-left: 0;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== App Shell 布局 ===== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 侧边栏 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-dark);
            color: var(--text-light);
            display: flex;
            flex-direction: column;
            padding: 28px 0 20px;
            z-index: 1050;
            overflow-y: auto;
            border-right: 1px solid var(--border-light);
            transition: transform 0.35s ease;
        }

        .sidebar-logo {
            padding: 0 20px 24px;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: 0.5px;
        }
        .sidebar-logo i {
            font-size: 1.5rem;
            color: var(--primary);
        }

        .sidebar-nav {
            padding: 16px 12px 0;
            flex: 1;
        }

        .nav-label {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: rgba(255, 255, 255, 0.4);
            padding: 12px 12px 6px;
            font-weight: 600;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
            margin-bottom: 2px;
            cursor: pointer;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .nav-item:hover i {
            color: var(--primary-light);
        }
        .nav-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .nav-item.active i {
            color: #fff;
        }

        .nav-item .badge-nav {
            margin-left: auto;
            background: var(--accent);
            color: #1d3557;
            font-size: 0.65rem;
            font-weight: 700;
            padding: 2px 10px;
            border-radius: 20px;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            background: var(--bg-section);
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 0 20px;
            align-items: center;
            justify-content: space-between;
            z-index: 1060;
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-topbar .logo-text {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
        }
        .mobile-topbar .logo-text i {
            color: var(--primary);
            margin-right: 8px;
        }
        .mobile-menu-btn {
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* Offcanvas 覆盖 */
        .offcanvas.offcanvas-start {
            width: var(--sidebar-width) !important;
            background: var(--bg-dark) !important;
            color: var(--text-light) !important;
        }
        .offcanvas.offcanvas-start .offcanvas-body {
            padding: 0;
        }
        .offcanvas.offcanvas-start .btn-close {
            filter: invert(1) brightness(2);
        }

        /* ===== Hero 区块 ===== */
        .hero-category {
            position: relative;
            padding: 100px 0 90px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 30%;
            background-blend-mode: overlay;
            isolation: isolate;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.92) 0%, rgba(15, 26, 46, 0.70) 100%);
            z-index: 1;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-section), transparent);
            z-index: 2;
        }
        .hero-category .container-custom {
            position: relative;
            z-index: 3;
        }

        .hero-category .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(230, 57, 70, 0.2);
            border: 1px solid rgba(230, 57, 70, 0.3);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--primary-light);
            font-weight: 600;
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
        }
        .hero-category h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 20px;
            max-width: 720px;
        }
        .hero-category h1 .highlight {
            color: var(--primary-light);
        }
        .hero-category .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-category .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .hero-category .hero-stats .stat-item {
            text-align: center;
        }
        .hero-category .hero-stats .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-category .hero-stats .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 400;
        }

        .btn-custom-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: var(--shadow-glow);
            cursor: pointer;
        }
        .btn-custom-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(230, 57, 70, 0.4);
        }

        .btn-custom-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-custom-outline:hover {
            border-color: var(--primary);
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 通用板块标题 ===== */
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-bg-light {
            background: #ffffff;
        }
        .section-bg-alt {
            background: var(--bg-alt);
            color: var(--text-light);
        }
        .section-bg-alt .section-header h2 {
            color: #fff;
        }
        .section-bg-alt .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-bg-alt .section-header .section-tag {
            background: rgba(255, 255, 255, 0.12);
            color: var(--primary-light);
        }

        /* ===== 球类运动卡片网格 ===== */
        .sport-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 28px;
        }

        .sport-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-card);
            display: flex;
            flex-direction: column;
        }
        .sport-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .sport-card .card-img {
            height: 180px;
            background: var(--bg-dark);
            overflow: hidden;
            position: relative;
        }
        .sport-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .sport-card:hover .card-img img {
            transform: scale(1.06);
        }
        .sport-card .card-img .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 3px 14px;
            border-radius: 20px;
        }
        .sport-card .card-body {
            padding: 22px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .sport-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .sport-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .sport-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .sport-card .card-body .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }
        .sport-card .card-body .btn-link-card {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            transition: var(--transition);
        }
        .sport-card .card-body .btn-link-card:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ===== 卖点区块 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 30px;
        }
        .feature-item {
            text-align: center;
            padding: 32px 20px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            transition: var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .feature-item .feat-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: rgba(230, 57, 70, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-item:hover .feat-icon {
            background: var(--primary);
            color: #fff;
        }
        .feature-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .feature-item p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 适用场景 ===== */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 24px;
        }
        .scene-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .scene-card:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .scene-card .scene-icon {
            font-size: 2.2rem;
            color: var(--primary-light);
            margin-bottom: 14px;
        }
        .scene-card h5 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .scene-card p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.5;
        }

        /* ===== 学习路径 ===== */
        .path-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            counter-reset: step;
        }
        .path-step {
            flex: 1 1 180px;
            max-width: 220px;
            text-align: center;
            padding: 28px 16px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            position: relative;
            transition: var(--transition);
        }
        .path-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .path-step .step-num {
            width: 44px;
            height: 44px;
            margin: 0 auto 14px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
        }
        .path-step h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .path-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .path-step .step-connector {
            display: none;
        }

        /* ===== 社群动态 ===== */
        .social-proof {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }
        .proof-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            padding: 24px 16px;
            text-align: center;
            transition: var(--transition);
        }
        .proof-item:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .proof-item .proof-num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .proof-item .proof-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }
        .proof-item .proof-icon {
            font-size: 1.4rem;
            color: var(--primary-light);
            margin-bottom: 8px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-card);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 1rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-item .faq-question:hover {
            background: rgba(230, 57, 70, 0.03);
        }
        .faq-item .faq-question i {
            color: var(--primary);
            transition: transform 0.3s ease;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.92) 0%, rgba(15, 26, 46, 0.75) 100%);
            z-index: 1;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 80px 24px;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .app-footer {
            background: var(--bg-darker);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand .footer-logo i {
            color: var(--primary);
            margin-right: 8px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-category h1 {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }
            .hero-category {
                padding: 70px 0 60px;
            }
            .hero-category h1 {
                font-size: 2rem;
            }
            .hero-category .hero-sub {
                font-size: 1rem;
            }
            .hero-category .hero-stats {
                gap: 24px;
            }
            .hero-category .hero-stats .stat-num {
                font-size: 1.5rem;
            }
            .section-padding {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .sport-grid {
                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .scenes-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .path-steps {
                flex-direction: column;
                align-items: center;
            }
            .path-step {
                max-width: 100%;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-custom-primary,
            .hero-actions .btn-custom-outline {
                justify-content: center;
            }
            .social-proof {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 1.6rem;
            }
            .hero-category .hero-sub {
                font-size: 0.92rem;
            }
            .hero-category .hero-stats {
                gap: 16px;
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-category .hero-stats .stat-item {
                text-align: left;
                display: flex;
                align-items: baseline;
                gap: 8px;
            }
            .sport-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .scenes-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .social-proof {
                grid-template-columns: 1fr;
            }
            .cta-section .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-section .cta-actions .btn-custom-primary,
            .cta-section .cta-actions .btn-custom-outline {
                justify-content: center;
            }
        }

        /* ===== 辅助 ===== */
        .text-primary-custom {
            color: var(--primary) !important;
        }
        .bg-primary-custom {
            background: var(--primary) !important;
        }
        .mb-0 {
            margin-bottom: 0 !important;
        }
        .mt-2 {
            margin-top: 8px !important;
        }
        .mt-3 {
            margin-top: 16px !important;
        }
        .me-2 {
            margin-right: 8px !important;
        }
        .gap-2 {
            gap: 8px !important;
        }