/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2E86AB;
            --primary-dark: #1B5E7B;
            --primary-light: #D6EAF4;
            --accent: #F39C12;
            --accent-hover: #E67E22;
            --bg-page: #F5F8FA;
            --bg-card: #FFFFFF;
            --text-heading: #1A2B3D;
            --text-body: #4A5B6B;
            --border-color: #E1E8F0;
            --success: #27AE60;
            --footer-bg: #142433;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 4px;
            --shadow-card: 0 4px 20px rgba(26,43,61,0.06);
            --shadow-hover: 0 8px 32px rgba(26,43,61,0.12);
            --shadow-nav: 0 2px 8px rgba(26,43,61,0.06);
            --shadow-btn-primary: 0 4px 12px rgba(46,134,171,0.30);
            --shadow-btn-accent: 0 4px 12px rgba(243,156,18,0.35);
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            --spacing-block-desktop: 5rem;
            --spacing-block-mobile: 3rem;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-family);
            background-color: var(--bg-page);
            color: var(--text-body);
            font-size: 1rem;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            padding-bottom: 70px;
        }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; color: var(--text-heading); line-height: 1.3; }
        h1 { font-size: 2.25rem; }
        h2 { font-size: 1.875rem; }
        h3 { font-size: 1.25rem; }
        a { text-decoration: none; transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease; }
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        img { max-width: 100%; height: auto; }
        ul, ol { list-style: none; }

        .container { max-width: 1200px; padding-left: 1rem; padding-right: 1rem; }
        .text-primary-color { color: var(--primary); }
        .text-accent { color: var(--accent); }
        .section-padding { padding: var(--spacing-block-desktop) 0; }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #fff;
            box-shadow: var(--shadow-nav);
            height: 64px;
            display: flex;
            align-items: center;
        }
        .navbar-site { padding: 0; }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-right: 2rem;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.5px;
        }
        .logo-text span { color: var(--primary); }
        .navbar-nav .nav-link {
            color: var(--text-body);
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            position: relative;
        }
        .navbar-nav .nav-link:hover { color: var(--primary); }
        .navbar-nav .nav-link.active { color: var(--primary); font-weight: 600; }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 0.45rem 1.2rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            box-shadow: var(--shadow-btn-accent);
            white-space: nowrap;
        }
        .nav-cta-btn:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }
        .nav-search {
            position: relative;
            width: 220px;
        }
        .nav-search input {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-btn);
            padding: 0.4rem 2.2rem 0.4rem 0.9rem;
            font-size: 0.875rem;
            width: 100%;
            background: var(--bg-page);
        }
        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(46,134,171,0.12);
            outline: none;
        }
        .nav-search i {
            position: absolute;
            right: 0.8rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-body);
            font-size: 0.8rem;
        }

        /* 下拉面板 */
        .dropdown-panel {
            display: none;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            top: 100%;
            background: #fff;
            border-radius: 0 0 var(--radius-card) var(--radius-card);
            box-shadow: 0 16px 48px rgba(26,43,61,0.16);
            min-width: 560px;
            padding: 1.5rem 2rem;
            z-index: 1005;
        }
        .nav-item-drop:hover .dropdown-panel { display: block; }
        .dropdown-cols { display: flex; gap: 2.5rem; }
        .dropdown-col-title {
            font-size: 0.875rem;
            color: var(--text-body);
            font-weight: 600;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .dropdown-col a {
            display: block;
            padding: 0.35rem 0.75rem;
            color: var(--text-body);
            font-size: 0.9375rem;
            border-left: 2px solid transparent;
        }
        .dropdown-col a:hover { color: var(--primary); border-left-color: var(--primary); background: transparent; }
        .dropdown-latest a { display: block; }
        .drop-latest-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.4rem 0.5rem;
            font-size: 0.875rem;
            color: var(--text-body);
        }
        .drop-latest-item i { color: var(--primary); font-size: 0.75rem; }
        .drop-latest-item:hover { background: var(--primary-light); color: var(--primary-dark); }
        .drop-latest-item .date {
            font-size: 0.75rem;
            color: var(--text-body);
            margin-left: auto;
        }

        /* 移动端折叠菜单 */
        .navbar-mobile-drop {
            padding: 0.75rem 1rem;
            background: #fff;
            border-top: 1px solid var(--border-color);
        }
        .nav-mobile-sub { padding-left: 1.5rem; }
        .nav-mobile-sub a { display: block; padding: 0.3rem 0; font-size: 0.875rem; color: var(--text-body); }
        .nav-mobile-sub a:hover { color: var(--primary); }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            background: url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
            position: relative;
            padding: 6rem 0;
            text-align: center;
        }
        .hero-overlay {
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(255,255,255,0.92);
        }
        .hero-content { position: relative; z-index: 2; }
        .hero-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 0.3rem 1.2rem;
            border-radius: 40px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
        }
        .hero-section h1 {
            font-size: 2.75rem;
            font-weight: 800;
            max-width: 780px;
            margin: 0 auto 1.25rem;
            color: var(--text-heading);
            letter-spacing: -1px;
        }
        .hero-section h1 span { color: var(--primary); }
        .hero-subtitle {
            max-width: 700px;
            margin: 0 auto 2.5rem;
            font-size: 1.125rem;
            color: var(--text-body);
            line-height: 1.8;
        }
        .hero-search {
            max-width: 560px;
            margin: 0 auto 2.5rem;
            position: relative;
        }
        .hero-search input {
            width: 100%;
            height: 54px;
            border: 2px solid var(--border-color);
            border-radius: 12px;
            padding: 0 3.4rem 0 1.5rem;
            font-size: 1rem;
            background: #fff;
            box-shadow: var(--shadow-card);
            transition: border 0.2s, box-shadow 0.2s;
        }
        .hero-search input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 4px rgba(46,134,171,0.12);
        }
        .hero-search button {
            position: absolute;
            right: 6px;
            top: 6px;
            bottom: 6px;
            border: none;
            background: var(--primary);
            color: #fff;
            padding: 0 1.5rem;
            border-radius: 9px;
            font-weight: 600;
        }
        .hero-search button:hover { background: var(--primary-dark); }
        .hero-quick-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.6rem;
        }
        .quick-link-tag {
            background: #fff;
            border: 1px solid var(--border-color);
            color: var(--text-body);
            padding: 0.35rem 1.2rem;
            border-radius: 40px;
            font-size: 0.875rem;
            box-shadow: 0 2px 6px rgba(26,43,61,0.05);
        }
        .quick-link-tag:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

        /* ===== 入口矩阵 ===== */
        .entrance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        .entrance-item {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 1.75rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            border-bottom: 3px solid transparent;
        }
        .entrance-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-bottom-color: var(--primary);
        }
        .entrance-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.25rem;
            color: var(--primary);
            transition: background 0.2s;
        }
        .entrance-item:hover .entrance-icon { background: var(--primary); color: #fff; }
        .entrance-item h3 { font-size: 1.0625rem; margin-bottom: 0.35rem; }
        .entrance-item p { font-size: 0.8438rem; color: var(--text-body); margin-bottom: 0; }

        /* ===== 卖点三连 ===== */
        .feature-block { padding: var(--spacing-block-desktop) 0; }
        .section-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }
        .section-title { margin-bottom: 1.5rem; }
        .section-desc { margin-bottom: 3rem; text-align: center; max-width: 560px; }
        .feature-cards .card-feature {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 2rem 1.75rem;
            transition: transform 0.2s, box-shadow 0.2s;
            height: 100%;
            border: none;
            position: relative;
            overflow: hidden;
        }
        .feature-cards .card-feature::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
        }
        .feature-cards .card-1::before { background: var(--primary); }
        .feature-cards .card-2::before { background: var(--accent); }
        .feature-cards .card-3::before { background: var(--primary-dark); }
        .feature-cards .card-feature:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--primary);
        }
        .feature-cards .card-2 .feature-icon { background: #fdf0dc; color: var(--accent); }
        .feature-cards .card-3 .feature-icon { background: #dfeef5; color: var(--primary-dark); }
        .link-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9375rem;
        }
        .link-more:hover { color: var(--primary-dark); }

        /* ===== 场景演示 zigzag ===== */
        .demo-scene { margin-bottom: 4rem; }
        .demo-scene:last-child { margin-bottom: 0; }
        .demo-img {
            border-radius: var(--radius-card);
            overflow: hidden;
            background-position: center;
            background-size: cover;
            height: 260px;
            box-shadow: var(--shadow-card);
        }
        .demo-content h3 { margin-bottom: 1rem; }
        .demo-content p { margin-bottom: 1.25rem; }
        .tag-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: var(--radius-badge);
            padding: 0.25rem 0.8rem;
            font-size: 0.8438rem;
            margin-right: 0.4rem;
            margin-top: 0.3rem;
        }

        /* ===== 社会认同 ===== */
        .social-proof {
            background: #F5F8FA;
            padding: var(--spacing-block-desktop) 0;
        }
        .stat-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            text-align: center;
            margin-bottom: 3.5rem;
        }
        .stat-number {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--primary-dark);
        }
        .stat-label { font-size: 0.875rem; color: var(--text-body); margin-top: 0.25rem; }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .testimonial-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
        }
        .testimonial-card .stars { color: var(--accent); font-size: 0.875rem; margin-bottom: 0.75rem; }
        .testimonial-card p { font-size: 0.9375rem; font-style: normal; color: var(--text-body); }
        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            margin-top: 1rem;
        }
        .testimonial-avatar {
            width: 36px;
            height: 36px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9375rem;
        }
        .testimonial-name { font-weight: 600; font-size: 0.9375rem; color: var(--text-heading); }
        .testimonial-role { font-size: 0.8125rem; }

        /* ===== 内容预览：热门分类 ===== */
        .hot-cats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        .hot-cat-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 1.25rem;
            display: flex;
            align-items: center;
            gap: 1rem;
            transition: box-shadow 0.2s, border 0.2s;
        }
        .hot-cat-item:hover { box-shadow: var(--shadow-hover); border-color: var(--primary); }
        .hot-cat-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
            flex-shrink: 0;
        }
        .hot-cat-name { font-weight: 600; color: var(--text-heading); font-size: 0.9375rem; }
        .hot-cat-count { font-size: 0.8125rem; color: var(--text-body); }

        /* ===== 资讯区块 ===== */
        .news-section {
            background: #fff;
            padding: var(--spacing-block-desktop) 0;
        }
        .news-list .news-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0 ;
            border-bottom: 1px solid var(--border-color);
        }
        .news-list .news-item:last-child { border-bottom: none; }
        .news-item-title a { color: var(--text-heading); font-weight: 500; }
        .news-item-title a:hover { color: var(--primary); }
        .news-item-date { color: var(--text-body); font-size: 0.875rem; flex-shrink: 0; margin-left: 1rem; }
        .news-sidebar .sidebar-box {
            background: var(--bg-page);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .sidebar-title { font-weight: 700; margin-bottom: 1rem; font-size: 1.125rem; }
        .sidebar-box ul li { padding: 0.5rem 0; border-bottom: 1px solid #e9eff3; }
        .sidebar-box ul li:last-child { border-bottom: none; }
        .sidebar-box ul li a { color: var(--text-body); }
        .sidebar-box ul li a:hover { color: var(--primary); }

        /* ===== 里程碑 ===== */
        .milestone-band { background: var(--primary-dark); color: #fff; padding: 2.5rem 0; }
        .milestone-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; text-align: center; }
        .milestone-year { font-size: 2rem; font-weight: 800; }
        .milestone-text { font-size: 0.9375rem; opacity: 0.85; }

        /* ===== 平台保障 ===== */
        .guarantee-wrap {
            background: var(--bg-page);
            padding: var(--spacing-block-desktop) 0;
        }
        .guarantee-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 2rem 1.5rem;
            text-align: center;
            height: 100%;
            box-shadow: var(--shadow-card);
        }
        .guarantee-card i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .guarantee-card h3 { font-size: 1.125rem; margin-bottom: 0.5rem; }
        .guarantee-card p { font-size: 0.875rem; margin-bottom: 0; }

        /* ===== FAQ 手风琴 ===== */
        .faq-block { padding: var(--spacing-block-desktop) 0; }
        .faq-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .faq-card .accordion-item { border: none; }
        .faq-card .accordion-button {
            border-bottom: 1px solid var(--border-color);
            font-weight: 500;
            color: var(--text-heading);
            min-height: 48px;
            padding: 1rem 1.25rem;
            font-size: 0.9375rem;
            box-shadow: none;
        }
        .faq-card .accordion-button:focus { box-shadow: none; border-color: var(--border-color); }
        .faq-card .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: #fff;
            box-shadow: none;
            border-left: 3px solid var(--primary);
            border-radius: 0;
        }
        .faq-card .accordion-button::after {
            transition: transform 0.2s;
        }
        .faq-card .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .faq-card .accordion-body {
            padding: 1rem 1.25rem;
            font-size: 0.9375rem;
            color: var(--text-body);
            background: #fff;
        }

        /* ===== CTA 横幅 ===== */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 4.5rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            right: -100px;
            top: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
        }
        .cta-banner h2 { color: #fff; font-size: 2rem; }
        .cta-banner p { color: rgba(255,255,255,0.9); }
        .cta-email-form { display: flex; gap: 0.5rem; }
        .cta-email-form input {
            border-radius: var(--radius-btn) 0 0 var(--radius-btn);
            border: none;
            padding: 0.75rem 1.25rem;
            font-size: 0.9375rem;
            border-radius: var(--radius-btn);
            flex: 1;
            min-width: 240px;
        }
        .cta-email-form input:focus { outline: 2px solid var(--accent); outline-offset: 0; box-shadow: none; }
        .cta-email-form button {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 0 1.8rem;
            font-weight: 600;
            white-space: nowrap;
            box-shadow: var(--shadow-btn-accent);
        }
        .cta-email-form button:hover { background: var(--accent-hover); }

        /* ===== 页脚 ===== */
        .site-footer { background: var(--footer-bg); color: rgba(255,255,255,0.7); padding: 4rem 0 0; }
        .site-footer h3 { color: #fff; font-size: 1.25rem; margin-bottom: 1.25rem; }
        .site-footer .footer-logo .logo-text { color: #fff; }
        .site-footer .footer-links li { margin-bottom: 0.6rem; }
        .site-footer .footer-links a { color: rgba(255,255,255,0.7); }
        .site-footer .footer-links a:hover { color: #fff; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 3rem; padding: 1.5rem 0; font-size: 0.875rem; }
        .footer-bottom a { color: rgba(255,255,255,0.6); }
        .footer-bottom a:hover { color: #fff; }

        /* ===== 底部固定转化条 ===== */
        .bottom-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: var(--primary-dark);
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            color: #fff;
        }
        .bottom-cta-bar .cta-bar-text {
            font-weight: 600;
            white-space: nowrap;
            font-size: 0.9375rem;
        }
        .bottom-cta-bar .btn-cta-bar {
            background: #fff;
            color: var(--primary-dark);
            border: none;
            padding: 0.45rem 1.2rem;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 0.9375rem;
            box-shadow: 0 2px 8px rgba(0,0,0,0.12);
            white-space: nowrap;
        }
        .bottom-cta-bar .btn-cta-bar:hover { background: var(--primary-light); }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                padding: 1rem;
                box-shadow: 0 8px 24px rgba(26,43,61,0.12);
                z-index: 1005;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
            }
            .nav-search { width: 100%; margin: 0.5rem 0; }
            .drop-latest-item { gap: 0.5rem; }
        }
        @media (max-width: 768px) {
            .section-padding, .feature-block, .social-proof, .news-section, .guarantee-wrap, .faq-block { padding: var(--spacing-block-mobile) 0; }
            h1 { font-size: 1.75rem; }
            h2 { font-size: 1.5rem; }
            .hero-section { padding: 4rem 0; }
            .hero-section h1 { font-size: 2rem; }
            .entrance-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
            .stat-row { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
            .testimonial-grid { grid-template-columns: 1fr; }
            .hot-cats { grid-template-columns: repeat(2, 1fr); }
            .milestone-grid { grid-template-columns: repeat(2, 1fr); }
            .cta-email-form { flex-direction: column; }
            .cta-email-form input { width: 100%; }
            .cta-email-form button { width: 100%; padding: 0.75rem 0; }
            .bottom-cta-bar { padding: 0.8rem 1rem; }
            .bottom-cta-bar .cta-bar-text { font-size: 0.875rem; }
            .navbar-toggler { border: none; }
            .demo-content { margin-bottom: 1.5rem; }
            .dropdown-panel { display: none !important; }
        }
        @media (max-width: 520px) {
            .entrance-grid { grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
            .hot-cats { grid-template-columns: 1fr; }
            .bottom-cta-bar .cta-bar-text { display: none; }
            .cta-email-form button { font-size: 0.875rem; }
        }

        /* ===== 分页 ===== */
        .pagination .page-link {
            border-radius: var(--radius-btn);
            border: 1px solid var(--border-color);
            margin: 0 3px;
            color: var(--text-body);
            min-width: 38px;
            text-align: center;
        }
        .pagination .page-link:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }
        .pagination .active .page-link { background: var(--accent); border-color: var(--accent); color: #fff; }
        .pagination {
            justify-content: center;
            gap: 4px;
        }

        /* ===== 资讯列表样式（首页） ===== */
        .index-info-section { padding: var(--spacing-block-desktop) 0; }
        .info-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 2rem;
            height: 100%;
        }
        .info-card h3 { margin-bottom: 1rem; }
        .info-card p { font-size: 0.9375rem; }
        .btn-soft {
            display: inline-block;
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 0.4rem 1.4rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            margin-top: 1rem;
        }
        .btn-soft:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }

        /* ===== 帖子列表 ===== */
        .trend-list li { padding: 0.8rem 0; border-bottom: 1px solid #eef2f5; }
        .trend-list li:last-child { border-bottom: none; }
        .trend-list a { color: var(--text-heading); font-size: 0.9375rem; }
        .trend-list a:hover { color: var(--primary); }

/* roulang page: category1 */
/* =========================================================
   91资源 全站设计系统
   ========================================================= */
:root {
  --primary: #2E86AB;
  --primary-dark: #1B5E7B;
  --primary-light: #D6EAF4;
  --accent: #F39C12;
  --accent-hover: #E67E22;
  --bg-page: #F5F8FA;
  --bg-card: #FFFFFF;
  --text-heading: #1A2B3D;
  --text-body: #4A5B6B;
  --border-color: #E1E8F0;
  --success: #27AE60;
  --footer-bg: #142433;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 4px;
  --shadow-card: 0 4px 20px rgba(26,43,61,0.06);
  --shadow-hover: 0 8px 32px rgba(26,43,61,0.12);
  --shadow-nav: 0 2px 8px rgba(26,43,61,0.06);
  --shadow-btn-primary: 0 4px 12px rgba(46,134,171,0.30);
  --shadow-btn-accent: 0 4px 12px rgba(243,156,18,0.35);
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --spacing-block-desktop: 5rem;
  --spacing-block-mobile: 3rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--text-body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 70px;
}

a {
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

.container {
  max-width: 1200px;
  padding-left: 1rem;
  padding-right: 1rem;
}

.text-primary-color {
  color: var(--primary);
}

.text-accent {
  color: var(--accent);
}

.section-padding {
  padding: var(--spacing-block-desktop) 0;
}

/* =========================================================
   顶部导航
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #fff;
  box-shadow: var(--shadow-nav);
}

.navbar-site {
  padding: 0;
  min-height: 64px;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: 2rem;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: -0.5px;
}

.logo-text span {
  color: var(--primary);
}

.navbar-nav .nav-link {
  color: var(--text-body);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  position: relative;
}

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

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

.navbar-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.nav-cta-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.45rem 1.2rem;
  border-radius: var(--radius-btn);
  font-weight: 600;
  box-shadow: var(--shadow-btn-accent);
  white-space: nowrap;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-cta-btn:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
}

.nav-search {
  position: relative;
  width: 220px;
}

.nav-search input {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  padding: 0.4rem 2.2rem 0.4rem 0.9rem;
  font-size: 0.875rem;
  width: 100%;
  background: var(--bg-page);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.nav-search input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(46, 134, 171, 0.12);
  outline: none;
}

.nav-search i {
  position: absolute;
  right: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-body);
  font-size: 0.8rem;
}

.navbar-toggler {
  border: none;
  font-size: 1.25rem;
  color: var(--text-heading);
  padding: 0.4rem 0.6rem;
}

.navbar-toggler:focus {
  box-shadow: none;
  border: none;
}

/* 下拉面板 */
.dropdown-menu-custom {
  width: 620px;
  max-width: 90vw;
  padding: 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hover);
  margin-top: 0.5rem;
}

.dropdown-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.drop-title {
  font-size: 0.875rem;
  color: var(--text-body);
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.drop-link {
  display: block;
  padding: 0.35rem 0.75rem;
  color: var(--text-body);
  font-size: 0.9375rem;
  border-left: 2px solid transparent;
  transition: all 0.2s ease;
}

.drop-link:hover {
  color: var(--primary);
  border-left-color: var(--primary);
  background: var(--primary-light);
  border-radius: 0 6px 6px 0;
}

.drop-latest-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.5rem;
  font-size: 0.875rem;
  color: var(--text-body);
  border-radius: 6px;
  transition: background 0.2s ease, color 0.2s ease;
}

.drop-latest-item i {
  color: var(--primary);
  font-size: 0.75rem;
}

.drop-latest-item:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.drop-latest-item .date {
  font-size: 0.75rem;
  color: var(--text-body);
  margin-left: auto;
  white-space: nowrap;
}

/* =========================================================
   分类页头
   ========================================================= */
.category-hero {
  background: linear-gradient(135deg, rgba(20, 36, 51, 0.85), rgba(27, 94, 123, 0.72)), url('/assets/images/backpic/back-1.jpg') center / cover no-repeat;
  padding: 4.5rem 0;
  color: #fff;
  position: relative;
}

.category-hero .breadcrumb {
  background: transparent;
  padding: 0;
  margin-bottom: 1rem;
  --bs-breadcrumb-divider-color: rgba(255, 255, 255, 0.55);
}

.category-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.75);
  transition: color 0.2s ease;
}

.category-hero .breadcrumb a:hover {
  color: #fff;
}

.category-hero .breadcrumb-item.active {
  color: rgba(255, 255, 255, 0.9);
}

.category-hero h1 {
  color: #fff;
  font-weight: 700;
  font-size: 2.25rem;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.category-hero .lead {
  color: rgba(255, 255, 255, 0.88);
  max-width: 760px;
  font-size: 1.0625rem;
  margin-bottom: 0;
}

/* 数据横条 */
.data-strip {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 2rem 2.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: -3rem;
  position: relative;
  z-index: 2;
  border: 1px solid var(--border-color);
}

.data-strip .data-item {
  text-align: center;
}

.data-strip .num {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.2;
}

.data-strip .label {
  font-size: 0.875rem;
  color: var(--text-body);
  margin-top: 0.25rem;
}

/* =========================================================
   子分类筛选条
   ========================================================= */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2.5rem 0 2rem;
}

.filter-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1.1rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border-color);
  color: var(--text-body);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
}

.filter-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.filter-pill.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(46, 134, 171, 0.25);
}

/* =========================================================
   资源列表（横排卡片）
   ========================================================= */
.resource-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.resource-card {
  display: flex;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-color);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.resource-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.resource-card .cover-wrap {
  width: 240px;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  min-height: 180px;
}

.resource-card .cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.resource-card .cover-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(20, 36, 51, 0.45));
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 1rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.resource-card .cover-wrap:hover .cover-mask {
  opacity: 1;
}

.resource-card .view-btn {
  display: inline-block;
  background: rgba(255, 255, 255, 0.95);
  color: var(--primary-dark);
  padding: 0.3rem 1rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: background 0.2s ease, color 0.2s ease;
}

.resource-card .view-btn:hover {
  background: var(--primary);
  color: #fff;
}

.resource-card .info-wrap {
  flex: 1;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.resource-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 0.5rem;
}

.resource-card .summary {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-body);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 1rem;
}

.resource-card .meta-bottom {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.8125rem;
  color: var(--text-body);
}

.resource-card .meta-bottom i {
  color: var(--primary);
  margin-right: 0.25rem;
}

.tag-badge {
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-badge);
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 0.35rem;
}

/* =========================================================
   分页
   ========================================================= */
.pagination-wrap {
  display: flex;
  justify-content: center;
  margin-top: 3rem;
}

.pagination .page-link {
  border: none;
  border-radius: var(--radius-btn);
  margin: 0 0.25rem;
  color: var(--text-body);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  box-shadow: 0 2px 8px rgba(26, 43, 61, 0.04);
  transition: all 0.2s ease;
}

.pagination .page-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.pagination .page-item.active .page-link {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-btn-accent);
}

.pagination .page-item.disabled .page-link {
  color: #b0bfc8;
  background: #fff;
  box-shadow: none;
}

@media (max-width: 575.98px) {
  .pagination .page-item:not(.page-prev):not(.page-next) {
    display: none;
  }
}

/* =========================================================
   FAQ 手风琴
   ========================================================= */
.faq-card {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

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

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

.faq-btn {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: transparent;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-heading);
  min-height: 48px;
  text-align: left;
  border-left: 4px solid transparent;
  transition: all 0.2s ease;
  cursor: pointer;
}

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

.faq-btn[aria-expanded="true"] {
  color: var(--primary);
  border-left-color: var(--primary);
}

.faq-btn i {
  transition: transform 0.3s ease;
  color: var(--primary);
  font-size: 0.9rem;
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-btn[aria-expanded="true"] i {
  transform: rotate(180deg);
}

.faq-body {
  padding: 0 1.25rem 1rem 2rem;
  font-size: 0.9375rem;
  color: var(--text-body);
}

/* =========================================================
   CTA 横幅
   ========================================================= */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-card);
  padding: 3rem;
  position: relative;
  overflow: hidden;
  color: #fff;
}

.cta-banner h2 {
  color: #fff;
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.86);
  margin-bottom: 1.5rem;
  max-width: 720px;
}

.cta-banner .form-control {
  border-radius: var(--radius-btn);
  border: none;
  padding: 0.7rem 1.2rem;
  font-size: 0.9375rem;
  background: #fff;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.cta-banner .form-control:focus {
  border: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.35);
}

.cta-banner .btn-subscribe {
  background: var(--accent);
  border: none;
  color: #fff;
  font-weight: 600;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-btn);
  box-shadow: var(--shadow-btn-accent);
  transition: background 0.2s ease, transform 0.2s ease;
}

.cta-banner .btn-subscribe:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer {
  background: var(--footer-bg);
  color: rgba(255, 255, 255, 0.75);
  padding: 3.5rem 0 2rem;
  margin-top: 5rem;
}

.site-footer h3 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.site-footer .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.site-footer .footer-links a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.875rem;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

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

.footer-logo .logo-text {
  color: #fff;
  font-size: 1.375rem;
}

.site-footer p {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.5rem;
  margin-top: 2.5rem;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.45);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* =========================================================
   底部固定转化条
   ========================================================= */
.bottom-convert-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--primary-dark);
  box-shadow: 0 -4px 20px rgba(26, 43, 61, 0.18);
  padding: 0.8rem 0;
}

.bottom-convert-bar .bar-title {
  color: #fff;
  font-weight: 600;
  font-size: 0.9375rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bottom-convert-bar .bar-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.45rem 1.4rem;
  border-radius: var(--radius-btn);
  font-weight: 600;
  box-shadow: var(--shadow-btn-accent);
  white-space: nowrap;
  transition: background 0.2s ease, transform 0.2s ease;
}

.bottom-convert-bar .bar-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* =========================================================
   响应式断点
   ========================================================= */
@media (min-width: 992px) {
  .navbar-nav .nav-link {
    white-space: nowrap;
  }
}

@media (max-width: 991.98px) {
  .section-padding {
    padding: var(--spacing-block-mobile) 0;
  }

  .navbar-collapse {
    background: #fff;
    padding: 1rem;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-hover);
    margin-top: 0.5rem;
  }

  .navbar-nav {
    gap: 0.25rem;
  }

  .nav-actions {
    margin-top: 1rem;
    flex-wrap: wrap;
  }

  .nav-search {
    width: 100%;
    margin-bottom: 0.75rem;
  }

  .dropdown-menu-custom {
    width: 100% !important;
    max-width: 100%;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--primary-light);
    border-radius: 0;
    padding: 0.5rem 0 0.5rem 1rem;
    background: transparent;
  }

  .dropdown-panel {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .dropdown-menu {
    position: static;
  }

  .category-hero {
    padding: 3rem 0;
  }

  .category-hero h1 {
    font-size: 1.75rem;
  }

  .data-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    padding: 1.5rem;
  }

  .cta-banner {
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 767.98px) {
  .resource-card {
    flex-direction: column;
  }

  .resource-card .cover-wrap {
    width: 100%;
    height: 200px;
  }

  .resource-card .info-wrap {
    padding: 1.25rem;
  }

  .resource-card .meta-bottom {
    gap: 0.9rem;
  }

  .cta-banner h2 {
    font-size: 1.5rem;
  }

  .cta-banner .btn-subscribe {
    width: 100%;
  }
}

@media (max-width: 575.98px) {
  .filter-bar {
    gap: 0.5rem;
    margin: 1.5rem 0 1.25rem;
  }

  .filter-pill {
    padding: 0.4rem 0.9rem;
    font-size: 0.8125rem;
  }

  .data-strip .num {
    font-size: 1.375rem;
  }

  .data-strip .label {
    font-size: 0.75rem;
  }

  .bottom-convert-bar .bar-title {
    font-size: 0.8125rem;
  }

  .bottom-convert-bar .bar-btn {
    padding: 0.4rem 1rem;
    font-size: 0.875rem;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}

/* 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}