/* roulang page: index */
:root {
            --primary: #1E40AF;
            --primary-hover: #1D4ED8;
            --secondary: #3B82F6;
            --accent: #0D9488;
            --dark-block: #0F172A;
            --bg-body: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-main: #0F172A;
            --text-muted: #334155;
            --text-sub: #64748B;
            --border-color: #E2E8F0;
            --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
            --shadow-card: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
            --shadow-hover: 0 20px 25px -5px rgba(30, 64, 175, 0.12), 0 8px 10px -6px rgba(30, 64, 175, 0.08);
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-tap-highlight-color: transparent;
        }

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

        body {
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-body);
            color: var(--text-muted);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 顶部通栏 */
        .top-bar {
            background-color: #0B132B;
            color: #94A3B8;
            font-size: 0.8125rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 8px 0;
        }
        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .top-bar-items {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .top-bar-items span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* 主导航 */
        .header-main {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: box-shadow 0.3s ease;
        }
        .header-main.scrolled {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
        }
        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 76px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .brand-logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 1.15rem;
            font-weight: 900;
            box-shadow: 0 4px 10px rgba(30, 64, 175, 0.3);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 32px;
        }
        .nav-link {
            font-size: 0.9375rem;
            font-weight: 500;
            color: #334155;
            position: relative;
            padding: 8px 0;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* 按钮系统 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9375rem;
            font-weight: 600;
            padding: 11px 24px;
            border-radius: 8px;
            cursor: pointer;
            border: 1px solid transparent;
            transition: all 0.25s ease;
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(30, 64, 175, 0.28);
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(30, 64, 175, 0.35);
        }
        .btn-secondary {
            background-color: #EFF6FF;
            color: var(--primary);
            border-color: #BFDBFE;
        }
        .btn-secondary:hover {
            background-color: #DBEAFE;
            transform: translateY(-2px);
        }
        .btn-dark {
            background-color: #1E293B;
            color: #F8FAFC;
            border-color: #334155;
        }
        .btn-dark:hover {
            background-color: #0F172A;
            border-color: #475569;
        }
        .btn-outline-white {
            border-color: rgba(255, 255, 255, 0.4);
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.05);
        }
        .btn-outline-white:hover {
            background-color: rgba(255, 255, 255, 0.15);
            border-color: #FFFFFF;
        }

        /* 通用板块排版与留白 */
        .section {
            padding: 96px 0;
            position: relative;
        }
        .section-white {
            background-color: #FFFFFF;
        }
        .section-light {
            background-color: #F8FAFC;
        }
        .section-dark {
            background-color: var(--dark-block);
            color: #E2E8F0;
        }
        .section-header {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 56px auto;
        }
        .section-badge {
            display: inline-block;
            font-size: 0.8125rem;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 9999px;
            background-color: #EFF6FF;
            color: var(--primary);
            letter-spacing: 0.05em;
            margin-bottom: 16px;
            border: 1px solid #DBEAFE;
        }
        .section-badge.dark {
            background-color: rgba(59, 130, 246, 0.15);
            color: #60A5FA;
            border-color: rgba(59, 130, 246, 0.3);
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .section-dark .section-title {
            color: #FFFFFF;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-sub);
            line-height: 1.7;
        }
        .section-dark .section-desc {
            color: #94A3B8;
        }

        /* Block 1: 首屏 Hero（拼团转化版式） */
        .hero-section {
            position: relative;
            padding: 90px 0 100px 0;
            background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 65%, #172554 100%);
            color: #FFFFFF;
            overflow: hidden;
        }
        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/6c265d513c28154c.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.25fr 0.95fr;
            gap: 48px;
            align-items: center;
        }
        .hero-h1 {
            font-size: 3.1rem;
            font-weight: 900;
            line-height: 1.22;
            margin-bottom: 24px;
            letter-spacing: -0.03em;
        }
        .hero-h1 span {
            color: #60A5FA;
            background: linear-gradient(90deg, #93C5FD 0%, #60A5FA 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-summary {
            font-size: 1.125rem;
            line-height: 1.8;
            color: #CBD5E1;
            margin-bottom: 36px;
            max-width: 660px;
        }
        .hero-pills {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 40px;
        }
        .hero-pill-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 16px;
            border-radius: 9999px;
            font-size: 0.875rem;
            color: #E2E8F0;
        }
        /* 拼团联采转化卡 */
        .group-card {
            background-color: rgba(255, 255, 255, 0.98);
            border-radius: var(--radius-xl);
            padding: 36px;
            color: var(--text-main);
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.8);
            position: relative;
        }
        .group-card-badge {
            position: absolute;
            top: -14px;
            right: 28px;
            background: linear-gradient(135deg, #DC2626 0%, #EA580C 100%);
            color: #FFFFFF;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            box-shadow: 0 4px 10px rgba(220, 38, 38, 0.35);
        }
        .group-card-header {
            margin-bottom: 24px;
        }
        .group-price-row {
            display: flex;
            align-items: baseline;
            gap: 12px;
            margin-top: 8px;
        }
        .group-price {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--primary);
        }
        .group-original {
            text-decoration: line-through;
            color: #94A3B8;
            font-size: 1rem;
        }
        .group-progress-box {
            background-color: #F8FAFC;
            border: 1px solid #E2E8F0;
            border-radius: var(--radius-md);
            padding: 16px;
            margin-bottom: 24px;
        }
        .progress-bar-bg {
            height: 10px;
            border-radius: 9999px;
            background-color: #E2E8F0;
            overflow: hidden;
            margin: 10px 0 8px 0;
        }
        .progress-bar-fill {
            width: 82%;
            height: 100%;
            background: linear-gradient(90deg, #3B82F6 0%, #10B981 100%);
            border-radius: 9999px;
        }
        .group-btns {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        /* Block 2: 内容日历 */
        .calendar-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .calendar-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }
        .calendar-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #BFDBFE;
        }
        .cal-tag {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary);
            background-color: #EFF6FF;
            padding: 4px 10px;
            border-radius: 6px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .cal-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .cal-desc {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* Block 3: 热门专题 */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .topic-card {
            background-color: #FFFFFF;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .topic-img-wrapper {
            height: 200px;
            overflow: hidden;
            background-color: #E2E8F0;
        }
        .topic-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .topic-card:hover .topic-img-wrapper img {
            transform: scale(1.05);
        }
        .topic-content {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .topic-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .topic-desc {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 18px;
            flex: 1;
        }
        .topic-list {
            list-style: none;
            border-top: 1px solid #F1F5F9;
            padding-top: 14px;
        }
        .topic-list li {
            font-size: 0.85rem;
            color: #475569;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .topic-list li::before {
            content: "✓";
            color: var(--accent);
            font-weight: bold;
        }

        /* Block 4: 观点解读 */
        .insights-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .insight-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border-left: 5px solid var(--primary);
        }
        .insight-author {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }
        .author-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: #DBEAFE;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        .insight-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .insight-text {
            font-size: 0.9375rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Block 5: 资讯列表 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background-color: #FFFFFF;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .news-body {
            padding: 24px;
        }
        .news-date {
            font-size: 0.8125rem;
            color: var(--text-sub);
            margin-bottom: 10px;
        }
        .news-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.45;
        }
        .news-summary {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* Block 6: 媒体精选与行业聚焦 */
        .media-flex {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .media-banner {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: 0 20px 35px -10px rgba(15, 23, 42, 0.15);
            position: relative;
        }
        .media-quote-box {
            background-color: #F8FAFC;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-top: 20px;
            position: relative;
        }
        .media-quote-box blockquote {
            font-style: italic;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* Block 7: 关键业务数据分析条 */
        .stats-section {
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
            color: #FFFFFF;
            padding: 72px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item {
            padding: 0 16px;
            position: relative;
        }
        .stat-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 15%;
            height: 70%;
            width: 1px;
            background-color: rgba(255, 255, 255, 0.12);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 900;
            color: #60A5FA;
            line-height: 1;
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 1rem;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 6px;
        }
        .stat-sub {
            font-size: 0.8125rem;
            color: #94A3B8;
        }

        /* Block 8: 平台保障体系 */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .guarantee-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }
        .guarantee-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: #93C5FD;
        }
        .guarantee-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background-color: #EFF6FF;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin: 0 auto 18px auto;
        }
        .guarantee-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .guarantee-desc {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* Block 9: 案场数字化多端协同与功能亮点 */
        .suite-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .suite-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .suite-badge {
            font-size: 0.75rem;
            font-weight: 700;
            background-color: #F1F5F9;
            color: #475569;
            padding: 4px 10px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 16px;
        }

        /* Block 10: 标杆项目成效对比 */
        .compare-box {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .compare-header-row {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            background-color: #F1F5F9;
            padding: 20px 28px;
            font-weight: 700;
            color: var(--text-main);
            border-bottom: 1px solid var(--border-color);
        }
        .compare-row {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            padding: 20px 28px;
            border-bottom: 1px solid #F1F5F9;
            align-items: center;
        }
        .compare-row:last-child {
            border-bottom: none;
        }
        .compare-row:nth-child(even) {
            background-color: #FAFAFA;
        }
        .compare-target {
            font-weight: 600;
            color: var(--text-main);
        }
        .compare-traditional {
            color: #64748B;
        }
        .compare-system {
            color: var(--primary);
            font-weight: 700;
        }

        /* Block 11: 常见答疑手风琴 (FAQ) */
        .faq-container {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-summary {
            padding: 22px 28px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-main);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }
        .faq-summary::-webkit-details-marker {
            display: none;
        }
        .faq-summary::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--primary);
            transition: transform 0.25s ease;
        }
        details[open] .faq-summary::after {
            content: '−';
            transform: rotate(180deg);
        }
        details[open] .faq-summary {
            border-bottom: 1px solid #F1F5F9;
            color: var(--primary);
        }
        .faq-body {
            padding: 22px 28px;
            color: var(--text-sub);
            font-size: 0.95rem;
            line-height: 1.75;
            background-color: #FCFDFF;
        }

        /* Block 12: 订阅与预约咨询收口行动条 */
        .cta-banner {
            background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 50%, #1D4ED8 100%);
            border-radius: var(--radius-xl);
            padding: 64px 48px;
            color: #FFFFFF;
            box-shadow: 0 20px 40px -15px rgba(30, 64, 175, 0.4);
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(96, 165, 250, 0.2) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-content-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-form {
            background-color: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
            color: var(--text-main);
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-label {
            display: block;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.9375rem;
            outline: none;
            transition: all 0.2s ease;
        }
        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
        }

        /* Footer */
        .footer-main {
            background-color: #0A0F1D;
            color: #94A3B8;
            padding: 80px 0 32px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 64px;
        }
        .footer-brand-title {
            color: #FFFFFF;
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-about {
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .footer-col-title {
            color: #FFFFFF;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a:hover {
            color: #60A5FA;
            padding-left: 4px;
        }
        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 14px;
            line-height: 1.5;
        }
        .footer-bottom-bar {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8125rem;
        }

        /* 移动端汉堡切换 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }
        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text-main);
            margin: 5px 0;
            transition: all 0.3s ease;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .calendar-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topics-grid, .news-grid, .suite-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 36px;
            }
            .stat-item:nth-child(2)::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-content-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .hero-h1 {
                font-size: 2.2rem;
            }
            .top-bar-items span:not(:first-child) {
                display: none;
            }
            .nav-menu {
                position: fixed;
                top: 76px;
                left: 0;
                right: 0;
                background-color: #FFFFFF;
                flex-direction: column;
                padding: 24px;
                gap: 18px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
                display: none;
            }
            .nav-menu.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta .btn {
                display: none;
            }
            .calendar-grid, .topics-grid, .insights-grid, .news-grid, .guarantee-grid, .suite-grid {
                grid-template-columns: 1fr;
            }
            .media-flex {
                grid-template-columns: 1fr;
            }
            .compare-header-row, .compare-row {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .stat-item::after {
                display: none !important;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .cta-banner {
                padding: 40px 24px;
            }
            .group-btns {
                grid-template-columns: 1fr;
            }
        }