/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1a2e;
            --primary-light: #1a2d4a;
            --primary-dark: #0a111f;
            --accent: #f5a623;
            --accent-hover: #e09515;
            --accent-light: #fde8b0;
            --bg-body: #f4f6f9;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-dark-alt: #132338;
            --text-body: #2d3748;
            --text-light: #718096;
            --text-white: #f7fafc;
            --text-muted: #a0aec0;
            --border-color: #e2e8f0;
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --border-radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(15, 26, 46, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 26, 46, 0.1);
            --shadow-lg: 0 20px 60px rgba(15, 26, 46, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            --sidebar-width: 260px;
            --header-height: 70px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        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,
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
            margin-top: 0;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 侧边栏导航 ===== */
        .app-wrapper {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            width: var(--sidebar-width);
            background: var(--primary);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1040;
            display: flex;
            flex-direction: column;
            transition: transform 0.35s ease;
            box-shadow: 2px 0 30px rgba(0, 0, 0, 0.2);
            overflow-y: auto;
        }
        .sidebar-brand {
            padding: 24px 20px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .sidebar-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .sidebar-brand .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .sidebar-brand .brand-text small {
            display: block;
            font-size: 11px;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.3px;
        }
        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--border-radius-sm);
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }
        .sidebar-nav .nav-item i {
            width: 22px;
            text-align: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
        }
        .sidebar-nav .nav-item.active {
            background: var(--accent);
            color: var(--primary);
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(245, 166, 35, 0.35);
        }
        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: -12px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
        }
        .sidebar-footer {
            padding: 16px 20px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
        }
        .sidebar-footer a {
            color: var(--text-muted);
        }
        .sidebar-footer a:hover {
            color: var(--accent);
        }

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

        /* 移动端顶部栏 */
        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1030;
            background: var(--primary);
            padding: 12px 16px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }
        .mobile-topbar .brand-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-white);
        }
        .mobile-topbar .toggler-btn {
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 24px;
            padding: 4px 8px;
            cursor: pointer;
            border-radius: 6px;
            transition: var(--transition);
        }
        .mobile-topbar .toggler-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* 移动端遮罩 */
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1035;
            backdrop-filter: blur(4px);
        }
        .sidebar-overlay.show {
            display: block;
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            position: relative;
            padding: 100px 0 80px;
            background: var(--primary);
            overflow: hidden;
            min-height: 520px;
            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: 0.25;
            z-index: 1;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.92) 40%, rgba(15, 26, 46, 0.7) 100%);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
            padding: 0 24px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.18);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 20px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            border: 1px solid rgba(245, 166, 35, 0.25);
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 46px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .hero-title .highlight {
            color: var(--accent);
        }
        .hero-sub {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .hero-actions .btn-accent {
            background: var(--accent);
            color: var(--primary);
            border: none;
            padding: 14px 40px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: 0 8px 25px rgba(245, 166, 35, 0.35);
        }
        .hero-actions .btn-accent:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 35px rgba(245, 166, 35, 0.45);
        }
        .hero-actions .btn-outline-light {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.35);
            padding: 12px 36px;
            font-size: 16px;
            font-weight: 500;
            border-radius: 50px;
            transition: var(--transition);
        }
        .hero-actions .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--text-white);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 50px;
            flex-wrap: wrap;
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-item .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stats .stat-item .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 60px 0 50px;
                min-height: auto;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 16px;
            }
            .hero-actions .btn-accent,
            .hero-actions .btn-outline-light {
                padding: 12px 28px;
                font-size: 14px;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 36px;
            }
            .hero-stats .stat-item .num {
                font-size: 26px;
            }
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-padding-sm {
            padding: 50px 0;
        }
        .section-title-wrap {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title-wrap .sub-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 10px;
            background: var(--accent-light);
            padding: 4px 16px;
            border-radius: 50px;
        }
        .section-title-wrap h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .section-title-wrap p {
            font-size: 16px;
            color: var(--text-light);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 50px 0;
            }
            .section-title-wrap h2 {
                font-size: 26px;
            }
            .section-title-wrap {
                margin-bottom: 32px;
            }
        }

        /* ===== 特色卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            background: var(--accent-light);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 28px;
            color: var(--accent);
            transition: var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: var(--accent);
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 0;
        }
        @media (max-width: 992px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-card {
                padding: 28px 20px 24px;
            }
        }

        /* ===== 最新资讯列表 ===== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .news-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--primary-light);
        }
        .news-card .card-body {
            padding: 24px 24px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-light);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .news-card .card-meta .tag {
            background: var(--accent-light);
            color: var(--accent);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 11px;
        }
        .news-card .card-meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-card .card-body h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-card .card-body h4 a {
            color: inherit;
        }
        .news-card .card-body h4 a:hover {
            color: var(--accent);
        }
        .news-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .news-card .card-body .read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-card .card-body .read-more:hover {
            gap: 10px;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--border-radius);
            color: var(--text-light);
            font-size: 16px;
            border: 1px dashed var(--border-color);
        }
        @media (max-width: 768px) {
            .news-list {
                grid-template-columns: 1fr;
            }
            .news-card .card-img {
                height: 160px;
            }
            .news-card .card-body {
                padding: 18px 18px 16px;
            }
        }

        /* ===== 服务/功能板块 ===== */
        .service-showcase {
            background: var(--bg-card);
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        .service-showcase .row {
            align-items: center;
        }
        .service-showcase .service-img {
            height: 100%;
            min-height: 360px;
            object-fit: cover;
            width: 100%;
            border-radius: 0;
        }
        .service-showcase .service-info {
            padding: 48px 48px 48px 32px;
        }
        .service-showcase .service-info .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-light);
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .service-showcase .service-info h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--primary);
        }
        .service-showcase .service-info p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .service-showcase .service-info .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px 20px;
        }
        .service-showcase .service-info .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
        }
        .service-showcase .service-info .feature-list li i {
            color: var(--accent);
            font-size: 14px;
            width: 18px;
            text-align: center;
        }
        .service-showcase .service-info .btn-accent {
            background: var(--accent);
            color: var(--primary);
            border: none;
            padding: 12px 36px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .service-showcase .service-info .btn-accent:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(245, 166, 35, 0.35);
        }
        @media (max-width: 992px) {
            .service-showcase .service-info {
                padding: 32px 24px;
            }
            .service-showcase .service-img {
                min-height: 240px;
                max-height: 300px;
            }
            .service-showcase .service-info .feature-list {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            .service-showcase .service-info h3 {
                font-size: 22px;
            }
            .service-showcase .service-info {
                padding: 24px 18px;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--primary);
            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: 0.1;
            z-index: 1;
        }
        .stats-section .container-custom {
            position: relative;
            z-index: 2;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stats-grid .stat-item .num {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stats-grid .stat-item .label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
            font-weight: 500;
        }
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }
        @media (max-width: 576px) {
            .stats-grid .stat-item .num {
                font-size: 32px;
            }
            .stats-grid {
                gap: 20px;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            margin: 0 auto 18px;
            box-shadow: 0 4px 15px rgba(245, 166, 35, 0.3);
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary);
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .step-card .step-arrow {
            position: absolute;
            right: -16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 20px;
            color: var(--accent);
            opacity: 0.6;
        }
        .step-card:last-child .step-arrow {
            display: none;
        }
        @media (max-width: 992px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-card .step-arrow {
                display: none;
            }
        }
        @media (max-width: 576px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--border-radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-item .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }
        .faq-item .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 1;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 24px;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-section .btn-accent {
            background: var(--accent);
            color: var(--primary);
            border: none;
            padding: 16px 48px;
            font-size: 17px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(245, 166, 35, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-accent:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(245, 166, 35, 0.45);
        }
        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 15px;
            }
            .cta-section .btn-accent {
                padding: 14px 32px;
                font-size: 15px;
            }
            .cta-section .container-custom {
                padding: 40px 16px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand .brand-text .brand-icon-sm {
            width: 34px;
            height: 34px;
            background: var(--accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 800;
            font-size: 16px;
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }
        .site-footer h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom .social-links {
            display: flex;
            gap: 14px;
        }
        .site-footer .footer-bottom .social-links a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            transition: var(--transition);
        }
        .site-footer .footer-bottom .social-links a:hover {
            background: var(--accent);
            color: var(--primary);
        }
        @media (max-width: 992px) {
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }
        @media (max-width: 576px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 响应式导航 ===== */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
            .sidebar-overlay.show {
                display: block;
            }
        }
        @media (min-width: 1025px) {
            .sidebar-overlay {
                display: none !important;
            }
        }

        /* ===== Bootstrap 覆盖 ===== */
        .btn:focus,
        .btn:active:focus {
            box-shadow: none;
        }
        .form-control:focus {
            box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.25);
            border-color: var(--accent);
        }
        .accordion-button:not(.collapsed) {
            background: var(--accent-light);
            color: var(--primary);
        }

        /* ===== 通用工具 ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-accent-light {
            background: var(--accent-light);
        }
        .rounded-12 {
            border-radius: var(--border-radius);
        }
        .shadow-hover:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .transition-base {
            transition: var(--transition);
        }

        /* ===== 滚动条 ===== */
        .sidebar::-webkit-scrollbar {
            width: 4px;
        }
        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }
        .sidebar::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 10px;
        }
        .sidebar::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.25);
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #d92b2b;
            --primary-dark: #b31f1f;
            --primary-light: #fce8e8;
            --secondary: #1a1a2e;
            --secondary-light: #2d2d4a;
            --accent: #f5a623;
            --accent-light: #fff3d6;
            --bg-body: #f8f9fa;
            --bg-card: #ffffff;
            --bg-dark: #0f0f1a;
            --bg-section-alt: #f0f2f5;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888a0;
            --text-light: #ffffff;
            --border-color: #e8e8f0;
            --border-radius: 16px;
            --border-radius-sm: 10px;
            --border-radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 16px 48px rgba(217, 43, 43, 0.15);
            --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --sidebar-width: 240px;
            --header-height: 0px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

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

        /* ===== Container ===== */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        /* ===== Sidebar Navigation ===== */
        .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;
            z-index: 1050;
            overflow-y: auto;
            transition: var(--transition);
            border-right: 1px solid rgba(255, 255, 255, 0.05);
        }

        .sidebar-brand {
            padding: 28px 20px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            flex-shrink: 0;
        }

        .sidebar-brand .brand-text {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.5px;
        }

        .sidebar-brand .brand-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }

        .sidebar-brand .brand-sub {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            margin-top: 6px;
            padding-left: 46px;
            font-weight: 400;
            letter-spacing: 1px;
        }

        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
            position: relative;
        }

        .sidebar-nav .nav-item i {
            width: 22px;
            text-align: center;
            font-size: 17px;
            flex-shrink: 0;
        }

        .sidebar-nav .nav-item:hover {
            color: rgba(255, 255, 255, 0.85);
            background: rgba(255, 255, 255, 0.06);
        }

        .sidebar-nav .nav-item.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(217, 43, 43, 0.35);
        }

        .sidebar-nav .nav-item.active:hover {
            background: var(--primary-dark);
        }

        .sidebar-nav .nav-divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.06);
            margin: 12px 16px;
        }

        .sidebar-nav .nav-label {
            font-size: 11px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.25);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            padding: 8px 16px 4px;
        }

        /* ===== Main Content ===== */
        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            background: var(--bg-body);
            position: relative;
        }

        /* ===== Mobile Top Bar ===== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--bg-dark);
            color: #fff;
            z-index: 1040;
            padding: 0 16px;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-topbar .brand-text {
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-topbar .brand-text .brand-icon-sm {
            width: 30px;
            height: 30px;
            font-size: 12px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
        }

        .mobile-topbar .menu-toggle {
            background: none;
            border: none;
            color: #fff;
            font-size: 24px;
            padding: 8px;
            cursor: pointer;
            border-radius: 8px;
            transition: var(--transition);
        }

        .mobile-topbar .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* ===== Hero Section ===== */
        .hero-section {
            position: relative;
            padding: 100px 0 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
            filter: saturate(0.7);
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.92) 0%, rgba(15, 15, 26, 0.7) 100%);
            z-index: 1;
        }

        .hero-section .container-custom {
            position: relative;
            z-index: 2;
        }

        .hero-section .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(217, 43, 43, 0.2);
            border: 1px solid rgba(217, 43, 43, 0.3);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
        }

        .hero-section .hero-badge i {
            font-size: 14px;
        }

        .hero-section h1 {
            font-size: 48px;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 20px;
            max-width: 680px;
            letter-spacing: -0.5px;
        }

        .hero-section h1 .highlight {
            color: var(--accent);
            position: relative;
        }

        .hero-section h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            right: 0;
            height: 6px;
            background: rgba(217, 43, 43, 0.3);
            border-radius: 4px;
            z-index: -1;
        }

        .hero-section .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        .hero-section .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .hero-section .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(217, 43, 43, 0.35);
        }

        .hero-section .btn-primary-custom:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(217, 43, 43, 0.45);
        }

        .hero-section .btn-secondary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 13px 32px;
            background: transparent;
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            font-weight: 500;
            border-radius: 50px;
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition);
            cursor: pointer;
        }

        .hero-section .btn-secondary-custom:hover {
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 50px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .hero-stats .stat-item .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stats .stat-item .stat-number .plus {
            color: var(--accent);
            font-size: 28px;
        }

        .hero-stats .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 2px;
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 80px 0;
        }

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

        .section-block-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header .section-tag {
            display: inline-block;
            padding: 4px 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header-dark h2 {
            color: #fff;
        }

        .section-header .section-sub {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-header-dark .section-sub {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== Sport Category Cards ===== */
        .sport-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .sport-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            cursor: pointer;
        }

        .sport-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }

        .sport-card .card-img {
            height: 180px;
            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(1.08);
        }

        .sport-card .card-img .card-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 40px 20px 16px;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
        }

        .sport-card .card-img .card-tag {
            display: inline-block;
            padding: 3px 12px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: 50px;
        }

        .sport-card .card-body {
            padding: 20px 22px 24px;
        }

        .sport-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .sport-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .sport-card .card-body .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .sport-card .card-body .card-link i {
            font-size: 12px;
            transition: var(--transition);
        }

        .sport-card .card-body .card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-item {
            text-align: center;
            padding: 36px 20px 30px;
            background: var(--bg-card);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .feature-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .feature-item .feature-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            border-radius: 16px;
            font-size: 26px;
            color: var(--primary);
            transition: var(--transition);
        }

        .feature-item:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .feature-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .feature-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== How It Works ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            counter-reset: step;
        }

        .step-item {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 36px 28px 32px;
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
        }

        .step-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .step-item .step-number {
            font-size: 48px;
            font-weight: 900;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .step-item:hover .step-number {
            color: var(--primary);
        }

        .step-item h4 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Data Stats ===== */
        .data-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .data-item {
            text-align: center;
            padding: 40px 20px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--border-radius);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }

        .data-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.12);
        }

        .data-item .data-icon {
            font-size: 32px;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .data-item .data-number {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .data-item .data-number .plus {
            color: var(--accent);
        }

        .data-item .data-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 4px;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: rgba(217, 43, 43, 0.15);
        }

        .faq-item .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }

        .faq-item .faq-question:hover {
            color: var(--primary);
        }

        .faq-item .faq-question .faq-toggle {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question .faq-toggle {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-item .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }

        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }

        .cta-box {
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-box p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .cta-box .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 42px;
            background: var(--primary);
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 24px rgba(217, 43, 43, 0.4);
        }

        .cta-box .btn-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(217, 43, 43, 0.5);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .site-footer .footer-brand .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }

        .site-footer .footer-brand .brand-text .brand-icon-sm {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: #fff;
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.45);
            line-height: 1.8;
            max-width: 360px;
        }

        .site-footer h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

        .site-footer ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.45);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .site-footer ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }

        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        .site-footer .social-links {
            display: flex;
            gap: 12px;
        }

        .site-footer .social-links a {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.4);
            font-size: 16px;
            transition: var(--transition);
        }

        .site-footer .social-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .sport-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-section h1 {
                font-size: 38px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }
            .mobile-topbar {
                display: flex;
            }
            .hero-section {
                padding: 60px 0 50px;
            }
            .hero-section h1 {
                font-size: 30px;
            }
            .hero-section .hero-desc {
                font-size: 16px;
            }
            .hero-stats {
                flex-wrap: wrap;
                gap: 24px;
            }
            .hero-stats .stat-item .stat-number {
                font-size: 26px;
            }
            .section-block {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .sport-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .data-stats {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
            .cta-box h2 {
                font-size: 28px;
            }
            .hero-section .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-section .btn-primary-custom,
            .hero-section .btn-secondary-custom {
                justify-content: center;
            }
            .container-custom {
                padding: 0 16px;
            }
            .sport-card .card-img {
                height: 140px;
            }
            .feature-item {
                padding: 24px 16px 20px;
            }
            .step-item {
                padding: 28px 20px 24px;
            }
        }

        @media (max-width: 520px) {
            .sport-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .data-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .data-item {
                padding: 24px 12px;
            }
            .data-item .data-number {
                font-size: 28px;
            }
            .hero-section h1 {
                font-size: 26px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .hero-stats .stat-item .stat-number {
                font-size: 22px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-box .btn-cta {
                width: 100%;
                justify-content: center;
            }
            .faq-item .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }
            .faq-item .faq-answer {
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== Sidebar overlay for mobile ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1045;
            backdrop-filter: blur(4px);
        }

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

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

        /* ===== Scrollbar Styling ===== */
        .sidebar::-webkit-scrollbar {
            width: 4px;
        }

        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }

        .sidebar::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
        }

        .sidebar::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* ===== Utility ===== */
        .text-primary-custom {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .fw-800 {
            font-weight: 800;
        }
        .mb-0 {
            margin-bottom: 0;
        }

        /* ===== Back to top ===== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50%;
            font-size: 18px;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(217, 43, 43, 0.3);
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: 0 8px 32px rgba(217, 43, 43, 0.4);
        }

        @media (max-width: 768px) {
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 16px;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d1b2a;
            --primary-light: #1b3a5c;
            --primary-dark: #070f18;
            --accent: #e63946;
            --accent-hover: #c1121f;
            --gold: #f4a261;
            --gold-light: #f9c78a;
            --bg-body: #f4f6f9;
            --bg-card: #ffffff;
            --bg-sidebar: #0d1b2a;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a5a;
            --text-muted: #8a8a9a;
            --text-light: #f0f2f5;
            --border-color: #e2e6ef;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.07);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.09);
            --sidebar-width: 240px;
            --header-height: 0px;
            --transition: all 0.25s ease;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }

        /* ===== 基础重置 ===== */
        *, *::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-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; padding-left: 0; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: 2.2rem; letter-spacing: -0.01em; }
        h2 { font-size: 1.75rem; margin-bottom: 1rem; }
        h3 { font-size: 1.35rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== 左侧导航 ===== */
        .app-shell {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }
        .sidebar {
            width: var(--sidebar-width);
            background: var(--bg-sidebar);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1050;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            transition: transform 0.3s ease;
            box-shadow: 2px 0 20px rgba(0,0,0,0.08);
        }
        .sidebar-logo {
            padding: 1.6rem 1.25rem 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .sidebar-logo .brand-text {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.4rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.02em;
        }
        .sidebar-logo .brand-icon-sm {
            background: var(--accent);
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            padding: 0.2rem 0.55rem;
            border-radius: var(--radius-sm);
        }
        .sidebar-logo .brand-sub {
            font-size: 0.75rem;
            color: rgba(255,255,255,0.35);
            margin-top: 0.15rem;
            letter-spacing: 0.5px;
        }
        .sidebar-nav {
            padding: 1rem 0.75rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.6);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            background: transparent;
            text-decoration: none;
        }
        .sidebar-nav .nav-item i { width: 1.2rem; text-align: center; font-size: 1rem; }
        .sidebar-nav .nav-item:hover {
            color: #ffffff;
            background: rgba(255,255,255,0.07);
        }
        .sidebar-nav .nav-item.active,
        .sidebar-nav .nav-item:active {
            color: #ffffff;
            background: var(--accent);
            box-shadow: 0 2px 12px rgba(230,57,70,0.3);
        }
        .sidebar-nav .nav-divider {
            height: 1px;
            background: rgba(255,255,255,0.06);
            margin: 0.5rem 0.75rem;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .main-content .page-wrap {
            flex: 1;
            padding: 2rem 2rem 3rem;
        }

        /* ===== 文章头部 ===== */
        .article-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2.8rem;
            margin-bottom: 2rem;
            position: relative;
            overflow: hidden;
            min-height: 220px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }
        .article-header::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .article-header .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 1.2rem;
            position: relative;
            z-index: 1;
        }
        .article-header .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255,255,255,0.35);
        }
        .article-header .breadcrumb-item a,
        .article-header .breadcrumb-item.active {
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .article-header .breadcrumb-item a:hover { color: #ffffff; }
        .article-header h1 {
            color: #ffffff;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            position: relative;
            z-index: 1;
            max-width: 90%;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            align-items: center;
            position: relative;
            z-index: 1;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .article-meta .badge-category {
            background: var(--accent);
            color: #fff;
            padding: 0.2rem 0.9rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .article-meta span i { margin-right: 0.35rem; }

        /* ===== 正文内容 ===== */
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 2.5rem 2.8rem;
            box-shadow: var(--shadow-sm);
            margin-bottom: 2rem;
            line-height: 1.85;
            font-size: 1.05rem;
            color: var(--text-primary);
        }
        .article-body p { margin-bottom: 1.2rem; }
        .article-body h2, .article-body h3 { margin-top: 1.8rem; margin-bottom: 0.8rem; }
        .article-body img { border-radius: var(--radius-sm); margin: 1.5rem 0; }
        .article-body ul, .article-body ol { margin-bottom: 1.2rem; padding-left: 1.5rem; }
        .article-body ul li { list-style: disc; margin-bottom: 0.3rem; }
        .article-body ol li { list-style: decimal; margin-bottom: 0.3rem; }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 0.8rem 1.2rem;
            margin: 1.5rem 0;
            background: #f8f0f0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
        }
        .article-not-found {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .article-not-found i { font-size: 3.5rem; color: var(--text-muted); margin-bottom: 1.2rem; }
        .article-not-found h3 { color: var(--text-primary); margin-bottom: 0.6rem; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 1.5rem; }

        /* ===== 标签与分享 ===== */
        .article-tags-share {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            margin-bottom: 2.5rem;
            padding: 1rem 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .article-tags .tag {
            display: inline-block;
            background: #eef0f5;
            color: var(--text-secondary);
            padding: 0.25rem 0.9rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--accent);
            color: #fff;
        }
        .share-buttons {
            display: flex;
            gap: 0.6rem;
        }
        .share-buttons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #eef0f5;
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .share-buttons a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 推荐文章 ===== */
        .section-title {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1.6rem;
        }
        .section-title i { color: var(--accent); font-size: 1.3rem; }
        .section-title h2 { margin-bottom: 0; }
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-bottom: 2.5rem;
        }
        .recommend-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .recommend-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .recommend-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .recommend-card .card-body {
            padding: 1.2rem 1.2rem 1.4rem;
        }
        .recommend-card .card-body h5 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--text-primary);
        }
        .recommend-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0.6rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .recommend-card .card-body .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .recommend-card .card-body .card-meta i { margin-right: 0.3rem; }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 2rem 2.5rem;
            box-shadow: var(--shadow-sm);
            margin-bottom: 2.5rem;
            border: 1px solid var(--border-color);
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 1rem 0;
        }
        .faq-item:last-child { border-bottom: none; }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            padding: 0.25rem 0;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover { color: var(--accent); }
        .faq-question i { transition: var(--transition); font-size: 0.9rem; color: var(--text-muted); }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); color: var(--accent); }
        .faq-answer {
            padding-top: 0.6rem;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 3rem 3.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            margin-bottom: 2rem;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .cta-block h3 {
            color: #ffffff;
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
            position: relative;
            z-index: 1;
        }
        .cta-block p {
            color: rgba(255,255,255,0.7);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 1.8rem;
            position: relative;
            z-index: 1;
        }
        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--accent);
            color: #fff;
            padding: 0.8rem 2.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            position: relative;
            z-index: 1;
            cursor: pointer;
            text-decoration: none;
        }
        .cta-block .btn-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(230,57,70,0.35);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-sidebar);
            color: rgba(255,255,255,0.7);
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer .footer-brand .brand-text {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.3rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 0.8rem;
        }
        .site-footer .footer-brand .brand-text .brand-icon-sm {
            background: var(--accent);
            color: #fff;
            font-weight: 800;
            font-size: 0.9rem;
            padding: 0.15rem 0.5rem;
            border-radius: var(--radius-sm);
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .site-footer h5 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .site-footer ul li { margin-bottom: 0.5rem; }
        .site-footer ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer ul li a:hover { color: #ffffff; padding-left: 3px; }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.06);
            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: #ffffff; }
        .social-links {
            display: flex;
            gap: 0.8rem;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.5);
            font-size: 1rem;
            transition: var(--transition);
        }
        .social-links a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 移动端导航切换 ===== */
        .navbar-toggler-side {
            display: none;
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            cursor: pointer;
            position: fixed;
            top: 1rem;
            left: 1rem;
            z-index: 1060;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }
        .navbar-toggler-side:hover { background: var(--primary-light); }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.45);
            z-index: 1045;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .recommend-grid { grid-template-columns: repeat(2, 1fr); }
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
            .article-header h1 { font-size: 1.7rem; max-width: 100%; }
        }
        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.show { display: block; }
            .navbar-toggler-side { display: flex; align-items: center; gap: 0.4rem; }
            .main-content { margin-left: 0; }
            .main-content .page-wrap { padding: 1.2rem 1rem 2rem; }
            .article-header { padding: 1.8rem 1.5rem; min-height: 180px; }
            .article-header h1 { font-size: 1.4rem; }
            .article-body { padding: 1.5rem 1.2rem; }
            .faq-section { padding: 1.2rem 1.2rem; }
            .cta-block { padding: 2rem 1.5rem; }
            .cta-block h3 { font-size: 1.4rem; }
            .recommend-grid { grid-template-columns: 1fr; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .article-tags-share { flex-direction: column; align-items: flex-start; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .article-header h1 { font-size: 1.2rem; }
            .article-meta { font-size: 0.8rem; gap: 0.8rem; }
            .article-body { font-size: 0.95rem; padding: 1rem 0.9rem; }
            .cta-block h3 { font-size: 1.2rem; }
            .cta-block .btn-cta { padding: 0.65rem 1.8rem; font-size: 0.95rem; }
        }

        /* ===== 按钮通用 ===== */
        .btn-outline-accent {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 2px solid var(--accent);
            color: var(--accent);
            background: transparent;
            padding: 0.5rem 1.6rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .btn-outline-accent:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(230,57,70,0.2);
        }
        .badge-accent {
            background: var(--accent);
            color: #fff;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
        }