/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #5B8DEF;
            --primary-hover: #4A7BE0;
            --primary-light: rgba(91, 141, 239, 0.10);
            --accent: #F2A0B5;
            --accent-hover: #E88CA3;
            --accent-light: rgba(242, 160, 181, 0.14);
            --bg-body: #FFFFFF;
            --bg-section: #F5F8FC;
            --bg-dark: #1F2A3A;
            --bg-dark-deep: #1B2535;
            --text-main: #1F2A3A;
            --text-secondary: #5A6B7D;
            --text-muted: #8A99AC;
            --border: #E8EDF4;
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-input: 10px;
            --radius-badge: 999px;
            --shadow-card: 0 4px 20px rgba(31, 42, 58, 0.06);
            --shadow-card-hover: 0 8px 30px rgba(31, 42, 58, 0.12);
            --shadow-float: 0 12px 40px rgba(31, 42, 58, 0.15);
            --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --nav-height: 76px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid rgba(91, 141, 239, 0.5);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
        }

        /* ========== 导航栏 ========== */
        .site-navbar {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            min-height: var(--nav-height);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow 0.3s ease;
        }

        .site-navbar.scrolled {
            box-shadow: 0 4px 20px rgba(31, 42, 58, 0.08);
        }

        .site-navbar .navbar-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
        }

        .site-navbar .navbar-brand svg {
            width: 34px;
            height: 34px;
        }

        .site-navbar .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 10px 18px !important;
            border-radius: 8px;
            position: relative;
            transition: all 0.25s ease;
        }

        .site-navbar .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .site-navbar .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .site-navbar .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-cta {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(91, 141, 239, 0.35);
        }

        .nav-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(91, 141, 239, 0.25);
        }

        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 8px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--primary);
        }

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

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(91, 141, 239, 0.08) 0%, rgba(242, 160, 181, 0.06) 100%);
            z-index: 1;
        }

        .hero-bg-img {
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            object-fit: cover;
            opacity: 0.08;
            border-radius: 0 0 0 40px;
            z-index: 0;
        }

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

        .hero-inner {
            max-width: 780px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            background: var(--accent-light);
            color: #D47E96;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-badge);
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 20px;
        }

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

        .hero-sub {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 搜索框 */
        .hero-search {
            display: flex;
            background: #fff;
            border-radius: 50px;
            box-shadow: var(--shadow-card);
            padding: 6px 6px 6px 20px;
            max-width: 620px;
            margin: 0 auto 28px;
            border: 1px solid var(--border);
            align-items: center;
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .hero-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 8px 30px rgba(91, 141, 239, 0.18);
        }

        .hero-search i {
            color: var(--text-muted);
            font-size: 18px;
            margin-right: 10px;
        }

        .hero-search input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 15px;
            color: var(--text-main);
            background: transparent;
            padding: 12px 0;
        }

        .hero-search input::placeholder {
            color: var(--text-muted);
        }

        .hero-search .btn {
            border-radius: 50px;
            padding: 12px 28px;
            font-weight: 600;
            background: var(--primary);
            border: none;
            color: #fff;
            transition: all 0.25s ease;
        }

        .hero-search .btn:hover {
            background: var(--primary-hover);
            transform: scale(1.02);
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .hero-tags .tag-btn {
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: var(--radius-badge);
            transition: all 0.25s ease;
        }

        .hero-tags .tag-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        /* ========== 区块通用 ========== */
        .section {
            padding: 80px 0;
            position: relative;
        }

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

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: var(--radius-badge);
        }

        .section h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .section-lead {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 40px;
        }

        /* ========== App 介绍区 ========== */
        .app-intro-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 36px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            height: 100%;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .app-intro-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .app-intro-card:nth-child(odd)::before {
            background: var(--accent);
        }

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

        .app-intro-card:hover::before {
            opacity: 1;
        }

        .app-intro-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .app-intro-icon i {
            font-size: 24px;
            color: var(--primary);
        }

        .app-intro-icon.accent {
            background: var(--accent-light);
        }

        .app-intro-icon.accent i {
            color: #D47E96;
        }

        .app-intro-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .app-intro-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 服务亮点区 ========== */
        .feature-row {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-bottom: 28px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            flex: 1;
            min-width: 280px;
            transition: all 0.3s ease;
        }

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

        .feature-card .step-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            opacity: 0.2;
            line-height: 1;
            margin-bottom: 16px;
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .feature-card.wide {
            flex: 100%;
            display: flex;
            gap: 32px;
            align-items: center;
        }

        .feature-card.wide .feature-text {
            flex: 1;
        }

        .feature-card.wide ul {
            list-style: none;
            padding: 0;
            margin: 0;
            flex: 1;
        }

        .feature-card.wide ul li {
            padding: 8px 0;
            font-size: 15px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .feature-card.wide ul li i {
            color: var(--primary);
            font-size: 18px;
        }

        /* ========== 关于区 ========== */
        .about-section {
            background: var(--bg-dark);
            color: #eaeef3;
            padding: 80px 0;
        }

        .about-section .section-label {
            background: rgba(91, 141, 239, 0.2);
            color: #9DBCF5;
        }

        .about-section h2 {
            color: #fff;
        }

        .about-section .section-lead {
            color: rgba(255, 255, 255, 0.7);
        }

        .about-text {
            font-size: 16px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.7);
            max-width: 720px;
        }

        .about-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-top: 40px;
        }

        .about-metrics .metric {
            text-align: left;
        }

        .about-metrics .metric-num {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .about-metrics .metric-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 6px;
        }

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

        .news-list {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 16px 24px;
        }

        .news-list .news-item {
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            gap: 16px;
            align-items: center;
            transition: all 0.25s ease;
        }

        .news-list .news-item:last-child {
            border-bottom: none;
        }

        .news-list .news-item:hover .news-title {
            color: var(--primary);
        }

        .news-list .news-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .news-list .news-icon i {
            color: var(--primary);
            font-size: 18px;
        }

        .news-list .news-body {
            flex: 1;
        }

        .news-list .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: color 0.25s ease;
        }

        .news-list .news-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .news-list .news-cat {
            font-size: 12px;
            background: var(--accent-light);
            color: #D47E96;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            font-weight: 600;
            flex-shrink: 0;
        }

        /* 右侧推荐栏 */
        .hot-sidebar {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 28px;
            margin-bottom: 24px;
        }

        .hot-sidebar h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hot-sidebar h4 i {
            color: var(--accent);
        }

        .hot-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .hot-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .hot-list li:last-child {
            border-bottom: none;
        }

        .hot-list .rank {
            width: 26px;
            height: 26px;
            border-radius: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .hot-list .rank.top {
            background: var(--accent);
            color: #fff;
        }

        .hot-list a {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
            transition: color 0.25s ease;
        }

        .hot-list a:hover {
            color: var(--primary);
        }

        /* ========== 观影指南 ========== */
        .guide-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
        }

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

        .guide-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }

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

        .guide-card-body .badge-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            background: var(--accent-light);
            color: #D47E96;
            padding: 3px 12px;
            border-radius: var(--radius-badge);
            margin-bottom: 10px;
        }

        .guide-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .guide-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

        .guide-card-body .guide-meta {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 12px;
            display: flex;
            gap: 16px;
        }

        /* ========== FAQ 区 ========== */
        .faq-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 28px;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            gap: 16px;
        }

        .faq-question i {
            font-size: 18px;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding-left: 0;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding-top: 12px;
        }

        /* ========== CTA 区 ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #4A7BE0 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 17px;
            margin-bottom: 32px;
        }

        .cta-section .btn-light {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-btn);
            padding: 14px 40px;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.25s ease;
        }

        .cta-section .btn-light:hover {
            background: #F5F8FC;
            transform: scale(1.04);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
        }

        .site-footer h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .site-footer .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 20px;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 10px;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: all 0.25s ease;
        }

        .site-footer .footer-links a:hover {
            color: #fff;
            padding-left: 6px;
        }

        .site-footer .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
        }

        .site-footer .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer .footer-contact i {
            color: var(--primary);
            font-size: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 48px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

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

        /* ========== 按钮通用 ========== */
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: all 0.25s ease;
        }

        .btn-primary {
            background: var(--primary);
            border: none;
            color: #fff;
            padding: 14px 28px;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(91, 141, 239, 0.4);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(91, 141, 239, 0.3);
        }

        .btn-outline-primary {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 13px 28px;
        }

        .btn-outline-primary:hover {
            background: var(--primary-light);
            color: var(--primary-hover);
            transform: translateY(-2px);
        }

        /* ========== 徽章 ========== */
        .badge {
            border-radius: var(--radius-badge);
            font-weight: 600;
        }

        /* ========== 响应式断点 ========== */
        @media (max-width: 991.98px) {
            .site-navbar .navbar-collapse {
                background: #fff;
                border-radius: 16px;
                padding: 16px;
                box-shadow: var(--shadow-card);
                margin-top: 12px;
            }

            .site-navbar .nav-link {
                padding: 10px 16px !important;
            }

            .nav-cta {
                margin-top: 12px;
                display: inline-block;
                text-align: center;
                width: 100%;
            }

            .hero h1 {
                font-size: 34px;
            }

            .hero {
                padding: 64px 0 48px;
            }

            .section {
                padding: 56px 0;
            }

            .feature-card.wide {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 767.98px) {
            .hero h1 {
                font-size: 28px;
            }

            .hero-sub {
                font-size: 16px;
            }

            .hero-search {
                flex-direction: column;
                border-radius: 20px;
                padding: 16px;
            }

            .hero-search input {
                width: 100%;
                padding: 10px 0;
                margin-bottom: 10px;
            }

            .hero-search .btn {
                width: 100%;
            }

            .section h2 {
                font-size: 26px;
            }

            .news-list .news-cat {
                display: none;
            }

            .about-metrics {
                gap: 28px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding: 0 20px;
            }

            .section {
                padding: 48px 0;
            }

            .hero {
                padding: 48px 0 40px;
            }

            .cta-section {
                padding: 48px 0;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .feature-card {
                padding: 24px;
            }

            .app-intro-card {
                padding: 24px;
            }
        }

/* roulang page: category1 */
:root {
  --primary: #5B8DEF;
  --primary-hover: #4A7BE0;
  --primary-light: rgba(91, 141, 239, 0.10);
  --accent: #F2A0B5;
  --accent-hover: #E88CA3;
  --accent-light: rgba(242, 160, 181, 0.14);
  --bg-body: #FFFFFF;
  --bg-section: #F5F8FC;
  --bg-dark: #1F2A3A;
  --bg-dark-deep: #1B2535;
  --text-main: #1F2A3A;
  --text-secondary: #5A6B7D;
  --text-muted: #8A99AC;
  --border: #E8EDF4;
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-input: 10px;
  --radius-badge: 999px;
  --shadow-card: 0 4px 20px rgba(31, 42, 58, 0.06);
  --shadow-card-hover: 0 8px 30px rgba(31, 42, 58, 0.12);
  --shadow-float: 0 12px 40px rgba(31, 42, 58, 0.15);
  --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --nav-height: 76px;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--primary-hover);
}
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid rgba(91, 141, 239, 0.5);
  outline-offset: 2px;
}
.container {
  max-width: 1200px;
}
/* ===== 导航栏 ===== */
.site-navbar {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  min-height: var(--nav-height);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1050;
  transition: box-shadow 0.3s ease;
}
.site-navbar.scrolled {
  box-shadow: 0 4px 20px rgba(31, 42, 58, 0.08);
}
.site-navbar .navbar-brand {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
}
.site-navbar .navbar-brand svg {
  width: 34px;
  height: 34px;
}
.site-navbar .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 18px !important;
  border-radius: 8px;
  position: relative;
  transition: all 0.25s ease;
}
.site-navbar .nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}
.site-navbar .nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.site-navbar .nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-cta {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.nav-cta:hover {
  background: var(--primary-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(91, 141, 239, 0.35);
}
.nav-cta:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(91, 141, 239, 0.25);
}
.navbar-toggler {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
}
.navbar-toggler:focus {
  box-shadow: none;
  border-color: var(--primary);
}
/* ===== 页头 ===== */
.page-header {
  position: relative;
  background: var(--bg-section);
  padding: 72px 0 56px;
  overflow: hidden;
}
.page-header-bg {
  position: absolute;
  top: 0;
  right: 0;
  width: 60%;
  height: 100%;
  object-fit: cover;
  opacity: 0.06;
  z-index: 0;
}
.page-header .container {
  position: relative;
  z-index: 2;
}
.breadcrumb-custom {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.breadcrumb-custom a {
  color: var(--primary);
}
.breadcrumb-custom .sep {
  margin: 0 4px;
  color: #C4CDD9;
}
.page-header h1 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 14px;
}
.page-header h1 span {
  color: var(--primary);
}
.page-header .header-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 720px;
  margin-bottom: 0;
  line-height: 1.8;
}
.header-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}
.header-stat-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-badge);
  padding: 8px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  box-shadow: var(--shadow-card);
}
.header-stat-item i {
  color: var(--primary);
}
.header-stat-item b {
  color: var(--text-main);
  font-weight: 700;
}
/* ===== Bento 速览 ===== */
.bento-section {
  padding: 72px 0 0;
}
.bento-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 24px;
}
.bento-main {
  background: var(--bg-dark);
  border-radius: var(--radius-card);
  padding: 36px 32px;
  color: #fff;
  position: relative;
  overflow: hidden;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.bento-main::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(91, 141, 239, 0.35);
  filter: blur(60px);
}
.bento-main .bento-label {
  font-size: 13px;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.65);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.bento-main h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
  position: relative;
  z-index: 1;
}
.bento-main p {
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 20px;
  max-width: 340px;
  position: relative;
  z-index: 1;
}
.bento-main .bento-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--primary);
  font-weight: 600;
  border-radius: var(--radius-btn);
  padding: 10px 20px;
  font-size: 14px;
  transition: all 0.25s ease;
  width: fit-content;
  position: relative;
  z-index: 1;
}
.bento-main .bento-btn:hover {
  background: var(--bg-section);
  color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.15);
}
.bento-main .bento-btn i {
  font-size: 14px;
}
.bento-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.bento-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}
.bento-card .icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}
.bento-card.pink .icon-wrap {
  background: var(--accent-light);
  color: #D47E96;
}
.bento-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}
.bento-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.7;
}
.bento-cta {
  grid-column: span 1;
  background: var(--accent);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.bento-cta h4 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.bento-cta p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 14px;
}
.bento-cta a {
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  border-bottom: 1.5px solid rgba(255, 255, 255, 0.7);
  align-self: flex-start;
  transition: all 0.2s ease;
}
.bento-cta a:hover {
  color: var(--bg-main);
  border-bottom-color: #fff;
}
/* ===== 主内容区 ===== */
.content-section {
  padding: 88px 0 72px;
}
.section-title-wrap {
  margin-bottom: 36px;
}
.section-title-wrap .section-title {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}
.section-title-wrap .section-sub {
  font-size: 16px;
  color: var(--text-secondary);
}
.video-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.video-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.video-card .card-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--bg-section);
}
.video-card .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .card-img-wrap img {
  transform: scale(1.03);
}
.video-card .duration-badge {
  position: absolute;
  right: 12px;
  bottom: 12px;
  background: rgba(31, 42, 58, 0.75);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-badge);
  backdrop-filter: blur(4px);
}
.video-card .card-body {
  padding: 22px 24px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.video-card .card-badges {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.badge-tag {
  background: var(--accent-light);
  color: #D47E96;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-badge);
  display: inline-block;
}
.badge-tag.blue {
  background: var(--primary-light);
  color: var(--primary);
}
.video-card h3 {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 10px;
  color: var(--text-main);
}
.video-card h3 a {
  color: var(--text-main);
  transition: color 0.2s ease;
}
.video-card h3 a:hover {
  color: var(--primary);
}
.video-card .card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.75;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-card .card-meta {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-muted);
}
.video-card .card-meta i {
  margin-right: 4px;
}
.video-card .card-meta .author {
  color: var(--text-secondary);
  font-weight: 500;
}
/* ===== 侧边栏 ===== */
.sidebar-sticky {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}
.sidebar-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 26px 24px;
  margin-bottom: 24px;
}
.sidebar-card .sidebar-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card .sidebar-title i {
  color: var(--primary);
}
.search-form {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  overflow: hidden;
  transition: all 0.25s ease;
  background: #fff;
}
.search-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.search-form input {
  flex: 1;
  border: none;
  padding: 12px 16px;
  font-size: 14px;
  font-family: var(--font-stack);
  color: var(--text-main);
  background: transparent;
}
.search-form input:focus {
  outline: none;
  box-shadow: none;
}
.search-form button {
  background: transparent;
  border: none;
  padding: 0 16px;
  color: var(--primary);
  font-size: 17px;
  cursor: pointer;
  transition: background 0.2s ease;
}
.search-form button:hover {
  background: var(--primary-light);
}
.hot-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hot-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--radius-badge);
  padding: 6px 15px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}
.hot-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}
.hot-tag .count {
  background: var(--accent-light);
  color: #D47E96;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-badge);
  padding: 1px 8px;
  line-height: 1.6;
}
.recent-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.recent-list li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.recent-list li:first-child {
  padding-top: 0;
}
.recent-list li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}
.recent-list .thumb {
  width: 90px;
  height: 60px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-section);
}
.recent-list .recent-info {
  flex: 1;
  min-width: 0;
}
.recent-list .recent-info .recent-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 4px;
  display: block;
  transition: color 0.2s ease;
}
.recent-list .recent-info .recent-title:hover {
  color: var(--primary);
}
.recent-list .recent-info .recent-meta {
  font-size: 12px;
  color: var(--text-muted);
}
.recommend-card {
  background: var(--bg-section);
  border-radius: 14px;
  padding: 20px;
  display: flex;
  gap: 16px;
  align-items: center;
}
.recommend-card .rec-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--primary);
  box-shadow: var(--shadow-card);
  flex-shrink: 0;
}
.recommend-card .rec-text {
  flex: 1;
}
.recommend-card .rec-text h5 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-main);
}
.recommend-card .rec-text p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.6;
}
/* ===== 分页器 ===== */
.pagination-wrap {
  display: flex;
  justify-content: center;
  margin-top: 48px;
}
.pagination {
  gap: 6px;
}
.pagination .page-link {
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-secondary);
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 500;
  background: #fff;
  transition: all 0.2s ease;
}
.pagination .page-link:hover,
.pagination .page-link:focus {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: none;
}
.pagination .page-item.active .page-link {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
/* ===== CTA区 ===== */
.cta-section {
  background: var(--bg-section);
  padding: 88px 0;
}
.cta-panel {
  background: linear-gradient(135deg, var(--primary) 0%, #6FA0F2 100%);
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-panel::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}
.cta-panel::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(242, 160, 181, 0.2);
}
.cta-panel .container {
  position: relative;
  z-index: 1;
}
.cta-panel h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.cta-panel p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-btn {
  background: #fff;
  color: var(--primary);
  border-radius: var(--radius-btn);
  padding: 14px 34px;
  font-size: 16px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s ease;
  border: none;
}
.cta-btn:hover {
  background: #F0F4FF;
  color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(31, 42, 58, 0.2);
}
.cta-btn.subtle {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  color: #fff;
  margin-left: 8px;
}
.cta-btn.subtle:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}
/* ===== FAQ ===== */
.faq-section {
  padding: 88px 0 96px;
}
.faq-section .section-title-wrap {
  text-align: center;
}
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
}
.accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-card) !important;
  margin-bottom: 14px;
  background: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.accordion-item:first-of-type,
.accordion-item:last-of-type {
  border-radius: var(--radius-card) !important;
}
.accordion-item .accordion-header {
  background: #fff;
}
.accordion-item .accordion-button {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  padding: 18px 24px;
  background: #fff;
  border: none;
  box-shadow: none;
  font-family: var(--font-stack);
}
.accordion-item .accordion-button:not(.collapsed) {
  color: var(--primary);
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
}
.accordion-item .accordion-button:focus {
  box-shadow: none;
  border-color: var(--border);
}
.accordion-item .accordion-button::after {
  background-size: 20px;
}
.accordion-item .accordion-body {
  padding: 18px 24px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  background: #fff;
}
/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-dark);
  color: #B8C2D0;
  padding-top: 64px;
  font-size: 14px;
}
.site-footer .footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.site-footer .footer-desc {
  color: #8A99AC;
  line-height: 1.8;
  margin-bottom: 0;
  max-width: 320px;
}
.site-footer h5 {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.site-footer .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer .footer-links li {
  margin-bottom: 10px;
}
.site-footer .footer-links a {
  color: #B8C2D0;
  font-size: 14px;
  transition: all 0.2s ease;
}
.site-footer .footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.site-footer .footer-contact {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer .footer-contact li {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-footer .footer-contact i {
  color: var(--primary);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 48px;
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #7A8CA0;
  background: var(--bg-dark-deep);
}
.footer-bottom a {
  color: #B8C2D0;
}
.footer-bottom a:hover {
  color: var(--primary);
}
/* ===== 响应式 ===== */
@media (max-width: 1199.98px) {
  .bento-grid {
    grid-template-columns: 1fr 1fr;
  }
  .bento-main {
    grid-column: span 2;
  }
  .bento-cta {
    grid-column: span 1;
  }
}
@media (max-width: 991.98px) {
  .page-header {
    padding: 56px 0 44px;
  }
  .page-header h1 {
    font-size: 32px;
  }
  .content-section {
    padding: 64px 0 48px;
  }
  .sidebar-sticky {
    position: static;
    margin-top: 32px;
  }
  .site-navbar .nav-link.active::after {
    display: none;
  }
  .site-navbar .nav-cta {
    margin-top: 8px;
    margin-bottom: 12px;
    display: inline-block;
    text-align: center;
  }
  .site-navbar .navbar-collapse {
    padding: 12px 0;
  }
  .cta-panel {
    padding: 48px 24px;
  }
  .cta-panel h2 {
    font-size: 26px;
  }
}
@media (max-width: 767.98px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .bento-main {
    grid-column: span 1;
  }
  .bento-cta {
    grid-column: span 1;
  }
  .page-header h1 {
    font-size: 28px;
  }
  .page-header .header-desc {
    font-size: 15px;
  }
  .header-stats {
    gap: 10px;
  }
  .header-stat-item {
    padding: 6px 14px;
    font-size: 13px;
  }
  .section-title-wrap .section-title {
    font-size: 24px;
  }
  .video-card h3 {
    font-size: 17px;
  }
  .cta-panel {
    padding: 40px 20px;
    border-radius: 18px;
  }
  .cta-panel p {
    font-size: 15px;
  }
  .cta-panel .cta-btn {
    padding: 12px 24px;
    font-size: 15px;
    margin-bottom: 8px;
  }
  .cta-panel .cta-btn.subtle {
    margin-left: 0;
  }
  .faq-section {
    padding: 64px 0;
  }
}
@media (max-width: 575.98px) {
  .page-header {
    padding: 40px 0 36px;
  }
  .page-header h1 {
    font-size: 24px;
  }
  .header-stat-item b {
    font-size: 14px;
  }
  .bento-main {
    padding: 28px 22px;
  }
  .bento-main h3 {
    font-size: 21px;
  }
  .bento-card {
    padding: 24px 20px;
  }
  .site-footer {
    padding-top: 48px;
  }
  .footer-bottom {
    margin-top: 32px;
  }
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}