/* roulang page: index */
:root {
      --primary: #6366f1;
      --primary-dark: #4f46e5;
      --primary-gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
      --accent: #06b6d4;
      --success: #10b981;
      --warning: #f59e0b;
      --danger: #ef4444;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --bg-dark: #0f172a;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #94a3b8;
      --border-color: rgba(226, 232, 240, 0.9);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 20px 25px -5px rgba(99, 102, 241, 0.15);
      --max-width: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      font-size: 15px;
      overflow-x: hidden;
    }

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

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

    button, input {
      font-family: inherit;
    }

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

    /* 顶部辅助条 */
    .top-bar {
      background-color: #0b0f19;
      color: #94a3b8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--success);
      box-shadow: 0 0 8px var(--success);
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 20px;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--primary-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-menu a {
      color: var(--text-muted);
      font-weight: 500;
      font-size: 15px;
      position: relative;
    }
    .nav-menu a:hover,
    .nav-menu a.active {
      color: var(--primary);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      white-space: nowrap;
      min-height: 44px;
    }
    .btn-primary {
      background: var(--primary-gradient);
      color: #fff;
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
    }
    .btn-secondary {
      background: #ffffff;
      color: var(--text-main);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      background: #f1f5f9;
      border-color: #cbd5e1;
    }
    .btn-dark {
      background: #1e293b;
      color: #f8fafc;
      border-color: #334155;
    }
    .btn-dark:hover {
      background: #334155;
    }

    /* 徽章规范 */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      font-size: 12px;
      font-weight: 600;
      border-radius: 9999px;
      background: #e0e7ff;
      color: var(--primary-dark);
      border: 1px solid rgba(99, 102, 241, 0.2);
    }
    .badge-accent {
      background: #cffafe;
      color: #0e7490;
      border-color: rgba(6, 182, 212, 0.2);
    }

    /* 通用Section */
    .section {
      padding: 88px 0;
      position: relative;
    }
    .section-alt {
      background-color: #ffffff;
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #f8fafc;
    }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 56px;
    }
    .section-header h2 {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .section-dark .section-header h2 {
      color: #ffffff;
    }
    .section-header p {
      color: var(--text-muted);
      font-size: 16px;
      line-height: 1.7;
    }
    .section-dark .section-header p {
      color: #94a3b8;
    }

    /* Hero Banner: 优惠券墙入口 + 倾斜风格 */
    .hero-section {
      padding: 80px 0 100px;
      background: radial-gradient(circle at 85% 15%, rgba(6, 182, 212, 0.12) 0%, transparent 40%),
                  radial-gradient(circle at 10% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 40%),
                  url('/assets/images/edfe46322a31f787.png') center/cover no-repeat;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -1px;
      margin: 20px 0;
      color: var(--text-main);
    }
    .hero-content h1 span {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 32px;
    }
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 36px;
      padding-top: 32px;
      border-top: 1px solid var(--border-color);
    }
    .hero-metric-item h4 {
      font-size: 24px;
      font-weight: 800;
      color: var(--text-main);
    }
    .hero-metric-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 优惠券墙主券面板 */
    .coupon-card-hero {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 2px dashed rgba(99, 102, 241, 0.4);
      padding: 36px;
      box-shadow: 0 20px 40px -15px rgba(99, 102, 241, 0.15);
      position: relative;
      overflow: hidden;
    }
    .coupon-badge-top {
      position: absolute;
      top: 16px;
      right: 16px;
    }
    .coupon-value {
      display: flex;
      align-items: baseline;
      gap: 6px;
      margin: 16px 0 8px;
    }
    .coupon-value .amount {
      font-size: 48px;
      font-weight: 800;
      color: var(--primary);
    }
    .coupon-value .unit {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-muted);
    }
    .coupon-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .coupon-features {
      list-style: none;
      margin: 20px 0 28px;
    }
    .coupon-features li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .coupon-features li::before {
      content: "✓";
      color: var(--success);
      font-weight: 800;
    }

    /* 板块2: 内容日历 */
    .calendar-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .calendar-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.3s ease;
    }
    .calendar-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }
    .calendar-date {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .calendar-item h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .calendar-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块3: 热门专题 */
    .topic-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      justify-content: center;
      margin-bottom: 40px;
    }
    .topic-pill {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 10px 20px;
      border-radius: 9999px;
      font-weight: 600;
      color: var(--text-muted);
      font-size: 14px;
      cursor: pointer;
    }
    .topic-pill:hover, .topic-pill.active {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }
    .topic-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .topic-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease;
    }
    .topic-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .topic-card-thumb {
      height: 180px;
      overflow: hidden;
    }
    .topic-card-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .topic-card-body {
      padding: 24px;
    }
    .topic-card-body h3 {
      font-size: 18px;
      font-weight: 700;
      margin: 8px 0 10px;
    }
    .topic-card-body p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 板块4: 观点解读 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .insight-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .insight-quote {
      font-size: 15px;
      line-height: 1.75;
      color: var(--text-muted);
      margin: 16px 0;
    }
    .insight-author {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-top: 20px;
      padding-top: 20px;
      border-top: 1px solid var(--border-color);
    }
    .insight-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }

    /* 板块5: 资讯列表 */
    .news-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 12px;
    }
    .news-box h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .news-box p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块6: 媒体精选 (图文横滑轨风格) */
    .media-scroller {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .media-badge {
      align-self: flex-start;
      font-size: 11px;
      background: #f1f5f9;
      color: var(--text-muted);
      padding: 2px 8px;
      border-radius: 4px;
    }
    .media-card h3 {
      font-size: 16px;
      font-weight: 600;
    }
    .media-card p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块7: 数据分析 (深色拓扑/数仓理念区) */
    .analytics-stage {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .analytics-console {
      background: #1e293b;
      border: 1px solid #334155;
      border-radius: var(--radius-lg);
      padding: 28px;
      font-family: monospace;
      color: #e2e8f0;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }
    .console-header {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 1px solid #334155;
    }
    .console-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #ef4444;
    }
    .console-dot:nth-child(2) { background: #f59e0b; }
    .console-dot:nth-child(3) { background: #10b981; }
    .console-code {
      font-size: 13px;
      line-height: 1.7;
      color: #38bdf8;
    }
    .console-code span.key { color: #f472b6; }
    .console-code span.val { color: #a3e635; }

    /* 板块8: 核心竞争优势矩阵 (2x3网格) */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .matrix-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
    }
    .matrix-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .matrix-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: #eef2ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 20px;
      margin-bottom: 20px;
    }
    .matrix-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .matrix-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块9: 行业应用场景 (Tab架构) */
    .scenario-tabs {
      display: flex;
      justify-content: center;
      gap: 12px;
      margin-bottom: 40px;
    }
    .scenario-tab-btn {
      padding: 12px 24px;
      border-radius: var(--radius-sm);
      background: #ffffff;
      border: 1px solid var(--border-color);
      font-weight: 600;
      font-size: 15px;
      color: var(--text-muted);
      cursor: pointer;
    }
    .scenario-tab-btn.active {
      background: var(--text-main);
      color: #ffffff;
      border-color: var(--text-main);
    }
    .scenario-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .scenario-thumb {
      border-radius: var(--radius-md);
      overflow: hidden;
    }

    /* 板块10: 套餐对比 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pricing-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 36px 28px;
      box-shadow: var(--shadow-sm);
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .pricing-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-hover);
    }
    .pricing-header h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .pricing-price {
      font-size: 36px;
      font-weight: 800;
      color: var(--text-main);
      margin: 16px 0 24px;
    }
    .pricing-price span {
      font-size: 14px;
      font-weight: 400;
      color: var(--text-muted);
    }
    .pricing-list {
      list-style: none;
      margin-bottom: 32px;
    }
    .pricing-list li {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pricing-list li::before {
      content: "•";
      color: var(--primary);
      font-size: 18px;
    }

    /* 板块11: 平台实时量化指标统计条 */
    .stats-strip {
      background: var(--text-main);
      color: #ffffff;
      padding: 48px 0;
      border-radius: var(--radius-lg);
      margin-top: -40px;
      margin-bottom: 80px;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      text-align: center;
      gap: 24px;
    }
    .stat-item h3 {
      font-size: 38px;
      font-weight: 800;
      color: #38bdf8;
      margin-bottom: 6px;
    }
    .stat-item p {
      font-size: 14px;
      color: #94a3b8;
    }

    /* 板块12: 平台保障与安全体系 */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .security-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 28px;
    }
    .security-icon {
      font-size: 28px;
      margin-bottom: 16px;
    }
    .security-card h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .security-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块13: 数据合规与接入支持 FAQ */
    .faq-wrapper {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块14: 底部转化驱动区 (订阅条/收口行动) */
    .cta-banner {
      background: var(--primary-gradient);
      border-radius: var(--radius-lg);
      padding: 64px 48px;
      color: #ffffff;
      text-align: center;
      box-shadow: 0 25px 50px -12px rgba(99, 102, 241, 0.35);
    }
    .cta-banner h2 {
      font-size: 36px;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .cta-banner p {
      font-size: 16px;
      max-width: 680px;
      margin: 0 auto 36px;
      opacity: 0.92;
      line-height: 1.75;
    }
    .cta-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .cta-actions .btn-white {
      background: #ffffff;
      color: var(--primary-dark);
      font-weight: 700;
    }
    .cta-actions .btn-white:hover {
      background: #f8fafc;
      transform: translateY(-2px);
    }
    .cta-actions .btn-outline {
      background: rgba(255, 255, 255, 0.12);
      color: #ffffff;
      border: 1px solid rgba(255, 255, 255, 0.4);
    }
    .cta-actions .btn-outline:hover {
      background: rgba(255, 255, 255, 0.22);
    }

    /* 页脚 */
    .site-footer {
      background: #0b0f19;
      color: #94a3b8;
      padding: 72px 0 32px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-brand .brand-logo {
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
      font-size: 13px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      padding-top: 32px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      flex-wrap: wrap;
      gap: 16px;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid,
      .analytics-stage,
      .scenario-panel {
        grid-template-columns: 1fr;
      }
      .calendar-timeline,
      .media-scroller {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid,
      .pricing-grid,
      .topic-cards-grid,
      .news-cards,
      .security-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        display: none;
      }
      .hero-section {
        padding: 48px 0 64px;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .section {
        padding: 56px 0;
      }
      .calendar-timeline,
      .matrix-grid,
      .pricing-grid,
      .topic-cards-grid,
      .news-cards,
      .media-scroller,
      .insights-grid,
      .security-grid,
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .stats-strip {
        margin-top: 0;
        margin-bottom: 48px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-banner {
        padding: 40px 24px;
      }
      .cta-banner h2 {
        font-size: 26px;
      }
    }