/* roulang page: index */
:root {
      --primary: #0284c7;
      --primary-dark: #0369a1;
      --primary-light: #e0f2fe;
      --accent: #f97316;
      --accent-hover: #ea580c;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-sub: #64748b;
      --bg-body: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --border-color: #cbd5e1;
      --border-light: #e2e8f0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 4px 12px -2px rgba(15,23,42,0.08);
      --shadow-lg: 0 10px 25px -5px rgba(15,23,42,0.12);
      --container-max: 1240px;
    }

    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.65;
      color: var(--text-main);
      background-color: var(--bg-body);
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-sm);
    }
    .header-top {
      border-bottom: 1px solid var(--border-light);
      padding: 12px 0;
    }
    .header-top-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-badge {
      font-size: 0.75rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .header-action-btn {
      background: var(--primary);
      color: #fff;
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      font-size: 0.88rem;
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: background 0.2s;
    }
    .header-action-btn:hover {
      background: var(--primary-dark);
    }
    .header-nav {
      background: #fafafa;
    }
    .nav-list {
      display: flex;
      list-style: none;
      gap: 8px;
      overflow-x: auto;
      padding: 8px 0;
    }
    .nav-item a {
      display: block;
      padding: 6px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
      white-space: nowrap;
    }
    .nav-item a:hover {
      color: var(--primary);
      background: rgba(2, 132, 199, 0.08);
    }
    .nav-item.active a {
      color: var(--primary-dark);
      background: #ffffff;
      box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    }

    /* 板块通用 */
    .section {
      padding: 64px 0;
      border-bottom: 1px solid var(--border-light);
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-header {
      margin-bottom: 36px;
    }
    .section-title {
      font-size: 1.75rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 900px;
    }

    /* 蓝图：Hero 优惠券墙入口 + 主券面放大 */
    .hero-section {
      padding: 56px 0 72px;
      background: linear-gradient(rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.92)), url('/assets/images/f226b8fa91807204.webp') center/cover no-repeat;
      color: #ffffff;
    }
    .hero-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .hero-title {
      font-size: 2.25rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 20px;
      color: #ffffff;
    }
    .hero-text {
      font-size: 1.05rem;
      line-height: 1.8;
      color: #cbd5e1;
      margin-bottom: 28px;
    }
    .coupon-wall {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .coupon-card {
      background: #ffffff;
      color: var(--text-main);
      border-radius: var(--radius-md);
      padding: 20px;
      position: relative;
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: var(--shadow-lg);
      border-left: 6px solid var(--accent);
    }
    .coupon-card.main-pass {
      border-left: 6px solid var(--primary);
      transform: scale(1.03);
      background: #ffffff;
    }
    .coupon-info h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .coupon-info p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .coupon-tag {
      display: inline-block;
      font-size: 0.72rem;
      font-weight: 600;
      background: var(--primary-light);
      color: var(--primary-dark);
      padding: 2px 6px;
      border-radius: 4px;
    }
    .coupon-action-btn {
      background: var(--accent);
      color: #ffffff;
      border: none;
      padding: 10px 18px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 0.9rem;
      white-space: nowrap;
      transition: background 0.2s;
    }
    .coupon-action-btn:hover {
      background: var(--accent-hover);
    }

    /* 指标看板与数据条 (蓝图变体E: 数据驱动流) */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .metric-value {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 6px;
      line-height: 1.2;
    }
    .metric-unit {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-sub);
    }
    .metric-label {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 资料目录板块 */
    .catalog-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .catalog-item {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .catalog-item:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .catalog-img-wrap {
      height: 160px;
      overflow: hidden;
      background: #e2e8f0;
    }
    .catalog-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .catalog-body {
      padding: 20px;
    }
    .catalog-code {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 6px;
    }
    .catalog-name {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .catalog-text {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 价值点与服务矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .matrix-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      border-top: 4px solid var(--primary);
    }
    .matrix-badge {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 4px;
      background: #f0fdf4;
      color: #166534;
      font-size: 0.8rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .matrix-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .matrix-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 关键图表与参数速览 */
    .chart-box {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .tech-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .tech-table th {
      background: var(--bg-alt);
      padding: 14px 16px;
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
      border-bottom: 2px solid var(--border-color);
    }
    .tech-table td {
      padding: 14px 16px;
      font-size: 0.88rem;
      color: var(--text-muted);
      border-bottom: 1px solid var(--border-light);
    }
    .tech-table tr:hover td {
      background-color: #f8fafc;
    }

    /* 结果对比 (蓝图变体E要求) */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .compare-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
    }
    .compare-card.positive {
      border: 2px solid var(--primary);
      background: #f0f9ff;
    }
    .compare-badge {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 14px;
    }
    .badge-pos {
      background: #0284c7;
      color: #fff;
    }
    .badge-neg {
      background: #cbd5e1;
      color: #334155;
    }
    .compare-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .compare-list li {
      font-size: 0.9rem;
      line-height: 1.6;
      color: var(--text-muted);
      padding-left: 20px;
      position: relative;
    }
    .compare-list li::before {
      content: "•";
      position: absolute;
      left: 0;
      color: var(--primary);
      font-size: 1.2rem;
      line-height: 1;
    }

    /* 里程碑与时间线 (蓝图变体E要求) */
    .timeline {
      position: relative;
      padding: 20px 0;
    }
    .timeline::before {
      content: '';
      position: absolute;
      left: 20px;
      top: 0;
      bottom: 0;
      width: 3px;
      background: var(--border-color);
    }
    .timeline-item {
      position: relative;
      padding-left: 54px;
      margin-bottom: 30px;
    }
    .timeline-point {
      position: absolute;
      left: 13px;
      top: 6px;
      width: 17px;
      height: 17px;
      border-radius: 50%;
      background: var(--primary);
      border: 3px solid #fff;
      box-shadow: 0 0 0 2px var(--primary);
    }
    .timeline-date {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 4px;
    }
    .timeline-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .timeline-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 资讯与技术文献列表 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-meta {
      font-size: 0.8rem;
      color: var(--text-sub);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.05rem;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .news-summary {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }
    .news-link {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      align-self: flex-start;
    }

    /* 场景演示板块 */
    .scenario-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
    }
    .scenario-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .scenario-steps {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .step-box {
      border-left: 3px solid var(--primary);
      padding-left: 16px;
    }
    .step-box h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .step-box p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 平台保障承诺 */
    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .assurance-card {
      background: var(--bg-card);
      padding: 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      text-align: center;
    }
    .assurance-icon {
      font-size: 1.8rem;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .assurance-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .assurance-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 快速解答与常见问题 */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .faq-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
    }
    .faq-q {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .faq-a {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 蓝图：领取表单 / 转化收口 (仅一处收口) */
    .dispatch-section {
      padding: 60px 0;
      background: #0f172a;
      color: #ffffff;
    }
    .dispatch-box {
      max-width: 820px;
      margin: 0 auto;
      background: #1e293b;
      border: 1px solid #334155;
      border-radius: var(--radius-lg);
      padding: 36px;
    }
    .dispatch-header {
      text-align: center;
      margin-bottom: 28px;
    }
    .dispatch-title {
      font-size: 1.6rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 8px;
    }
    .dispatch-desc {
      font-size: 0.92rem;
      color: #94a3b8;
    }
    .dispatch-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: #cbd5e1;
    }
    .form-control {
      width: 100%;
      padding: 11px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid #475569;
      background: #0f172a;
      color: #ffffff;
      font-size: 0.9rem;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
    }
    .form-submit-btn {
      width: 100%;
      background: var(--accent);
      color: #ffffff;
      padding: 13px;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: background 0.2s;
    }
    .form-submit-btn:hover {
      background: var(--accent-hover);
    }

    /* 页脚 */
    .site-footer {
      background: #090d16;
      color: #64748b;
      padding: 50px 0 30px;
      border-top: 1px solid #1e293b;
      font-size: 0.85rem;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      color: #f1f5f9;
      font-size: 1.15rem;
      margin-bottom: 12px;
    }
    .footer-brand p {
      line-height: 1.6;
      max-width: 480px;
    }
    .footer-col h5 {
      color: #e2e8f0;
      font-size: 0.95rem;
      margin-bottom: 12px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      padding-top: 24px;
      border-top: 1px solid #1e293b;
      text-align: center;
      color: #475569;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-layout {
        grid-template-columns: 1fr;
      }
      .coupon-card.main-pass {
        transform: none;
      }
      .metrics-grid, .assurance-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .catalog-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .matrix-grid, .compare-container, .scenario-layout, .faq-grid {
        grid-template-columns: 1fr;
      }
      .dispatch-form {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.75rem;
      }
      .section-title {
        font-size: 1.4rem;
      }
    }
    @media (max-width: 520px) {
      .metrics-grid, .catalog-grid, .news-grid, .assurance-grid {
        grid-template-columns: 1fr;
      }
      .coupon-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }
      .coupon-action-btn {
        width: 100%;
      }
    }

/* roulang page: category1 */
:root {
      --primary: #0284c7;
      --primary-dark: #0369a1;
      --primary-light: #e0f2fe;
      --accent: #f97316;
      --accent-hover: #ea580c;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-sub: #64748b;
      --bg-body: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --border-color: #cbd5e1;
      --border-light: #e2e8f0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 4px 12px -2px rgba(15,23,42,0.08);
      --shadow-lg: 0 10px 25px -5px rgba(15,23,42,0.12);
      --container-max: 1240px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.65;
      color: var(--text-main);
      background-color: var(--bg-body);
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .site-header {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-sm);
    }
    .header-top {
      border-bottom: 1px solid var(--border-light);
      padding: 12px 0;
    }
    .header-top-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-badge {
      font-size: 0.75rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .header-action-btn {
      background: var(--primary);
      color: #fff;
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      font-size: 0.88rem;
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: background 0.2s;
    }
    .header-action-btn:hover {
      background: var(--primary-dark);
    }
    .header-nav {
      background: #fafafa;
    }
    .nav-list {
      display: flex;
      list-style: none;
      gap: 8px;
      overflow-x: auto;
      padding: 8px 0;
    }
    .nav-item a {
      display: block;
      padding: 6px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
      white-space: nowrap;
    }
    .nav-item a:hover {
      color: var(--primary);
      background: rgba(2, 132, 199, 0.08);
    }
    .nav-item.active a {
      color: var(--primary-dark);
      background: #ffffff;
      box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    }
    .section {
      padding: 64px 0;
      border-bottom: 1px solid var(--border-light);
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-header {
      margin-bottom: 36px;
    }
    .section-title {
      font-size: 1.75rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 900px;
    }

    /* 蓝图：Hero 试用申请 + 权益徽章 + 资格说明 + 申请按钮 */
    .cat-hero {
      background: linear-gradient(135deg, #091e3a 0%, #0c2d54 100%);
      color: #ffffff;
      padding: 60px 0 70px;
      position: relative;
    }
    .cat-hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .cat-hero h1 {
      font-size: 2.3rem;
      line-height: 1.3;
      margin-bottom: 16px;
      font-weight: 800;
    }
    .hero-lead-text {
      font-size: 1.05rem;
      color: #cbd5e1;
      margin-bottom: 24px;
      line-height: 1.8;
    }
    .trial-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 30px;
      color: var(--text-main);
      box-shadow: var(--shadow-lg);
      border-top: 5px solid var(--accent);
    }
    .trial-badge-row {
      display: flex;
      gap: 8px;
      margin-bottom: 16px;
      flex-wrap: wrap;
    }
    .trial-badge {
      background: var(--primary-light);
      color: var(--primary-dark);
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: 20px;
      font-weight: 700;
    }
    .trial-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .trial-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .trial-input-wrap {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .trial-input {
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      outline: none;
    }
    .trial-btn {
      background: var(--accent);
      color: #fff;
      border: none;
      padding: 12px 20px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: background 0.2s;
    }
    .trial-btn:hover {
      background: var(--accent-hover);
    }

    /* 板块2：双模硬件基带拓扑与规格指标 */
    .specs-board {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 24px;
    }
    .spec-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      border-top: 3px solid var(--primary);
    }
    .spec-val {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1;
      margin-bottom: 8px;
    }
    .spec-name {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .spec-detail {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块3：双卡插槽与基站热备直连机制（图文混合） */
    .topo-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .topo-info h3 {
      font-size: 1.4rem;
      margin-bottom: 14px;
      color: var(--text-main);
    }
    .topo-info p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.7;
    }
    .topo-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .topo-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.9rem;
      color: var(--text-main);
    }
    .topo-marker {
      background: var(--primary-light);
      color: var(--primary-dark);
      font-weight: 800;
      font-size: 0.8rem;
      min-width: 22px;
      height: 22px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      margin-top: 2px;
    }
    .topo-image-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-light);
    }

    /* 板块4：票券式联调排期卡片 */
    .schedule-tickets {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .ticket-card {
      background: #ffffff;
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      background: radial-gradient(circle at top right, #f1f5f9 15px, #fff 16px);
      box-shadow: var(--shadow-sm);
    }
    .ticket-status {
      display: inline-block;
      font-size: 0.72rem;
      font-weight: 700;
      color: #059669;
      background: #d1fae5;
      padding: 2px 8px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .ticket-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .ticket-desc {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .ticket-meta {
      font-size: 0.8rem;
      color: var(--text-sub);
      border-top: 1px solid var(--border-light);
      padding-top: 12px;
      display: flex;
      justify-content: space-between;
    }

    /* 板块5：无跳转硬件直达通信参数对比 */
    .compare-container {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.9rem;
    }
    .custom-table th {
      background: #f8fafc;
      padding: 14px 18px;
      font-weight: 700;
      border-bottom: 2px solid var(--border-light);
      color: var(--text-main);
    }
    .custom-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-light);
      color: var(--text-muted);
    }
    .custom-table tr:last-child td {
      border-bottom: none;
    }
    .highlight-cell {
      color: var(--primary-dark);
      font-weight: 600;
    }

    /* 板块6：二卡实测案例与野外信令轨迹 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .case-img-wrap {
      height: 170px;
      overflow: hidden;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content {
      padding: 20px;
    }
    .case-tag {
      font-size: 0.72rem;
      font-weight: 700;
      background: var(--bg-alt);
      color: var(--primary-dark);
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 10px;
      display: inline-block;
    }
    .case-h {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .case-p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块7：资格审核与快速接入工单 (转化表单) */
    .form-box {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px;
      max-width: 760px;
      margin: 0 auto;
      box-shadow: var(--shadow-md);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full-width {
      grid-column: span 2;
    }
    .form-label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-control {
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      outline: none;
    }
    .form-control:focus {
      border-color: var(--primary);
    }
    .form-submit-btn {
      width: 100%;
      background: var(--primary);
      color: #ffffff;
      padding: 12px;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: background 0.2s;
      margin-top: 8px;
    }
    .form-submit-btn:hover {
      background: var(--primary-dark);
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 56px 0 24px;
      font-size: 0.9rem;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.15rem;
      margin-bottom: 12px;
    }
    .footer-brand p {
      line-height: 1.7;
      max-width: 440px;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.82rem;
    }

    @media (max-width: 1024px) {
      .specs-board {
        grid-template-columns: repeat(2, 1fr);
      }
      .schedule-tickets {
        grid-template-columns: repeat(2, 1fr);
      }
      .cat-hero-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .topo-split {
        grid-template-columns: 1fr;
      }
      .schedule-tickets, .case-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }

/* roulang page: category2 */
:root {
  --primary: #0284c7;
  --primary-dark: #0369a1;
  --primary-light: #e0f2fe;
  --accent: #f97316;
  --accent-hover: #ea580c;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-sub: #64748b;
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --bg-alt: #f1f5f9;
  --border-color: #cbd5e1;
  --border-light: #e2e8f0;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px -2px rgba(15,23,42,0.08);
  --shadow-lg: 0 10px 25px -5px rgba(15,23,42,0.12);
  --container-max: 1240px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
  color: var(--text-main);
  background-color: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}
/* 顶部导航 */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.header-top {
  border-bottom: 1px solid var(--border-light);
  padding: 12px 0;
}
.header-top-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand-logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-badge {
  font-size: 0.75rem;
  background: var(--primary-light);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.header-action-btn {
  background: var(--primary);
  color: #fff;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}
.header-action-btn:hover {
  background: var(--primary-dark);
}
.header-nav {
  background: #fafafa;
}
.nav-list {
  display: flex;
  list-style: none;
  gap: 8px;
  overflow-x: auto;
  padding: 8px 0;
}
.nav-item a {
  display: block;
  padding: 6px 14px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
.nav-item a:hover {
  color: var(--primary);
  background: rgba(2, 132, 199, 0.08);
}
.nav-item.active a {
  color: var(--primary-dark);
  background: #ffffff;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

/* 蓝图：Hero 斜切色块首屏，大标题压在色块上 + 单 CTA */
.hero-category {
  position: relative;
  background-color: #0b1329;
  background-image: linear-gradient(135deg, rgba(2, 132, 199, 0.95) 0%, rgba(15, 23, 42, 0.92) 100%), url('/assets/images/889358598f918913.webp');
  background-size: cover;
  background-position: center;
  color: #ffffff;
  padding: 80px 0 100px;
  overflow: hidden;
}
.hero-category::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 48px;
  background: var(--bg-body);
  clip-path: polygon(0 100%, 100% 100%, 100% 0);
}
.hero-content-wrap {
  max-width: 860px;
  position: relative;
  z-index: 2;
}
.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.hero-category h1 {
  font-size: 2.6rem;
  line-height: 1.25;
  font-weight: 900;
  margin-bottom: 20px;
  color: #ffffff;
  letter-spacing: -0.5px;
}
.hero-category p {
  font-size: 1.12rem;
  line-height: 1.8;
  color: #e2e8f0;
  margin-bottom: 32px;
}
.hero-cta-btn {
  display: inline-block;
  background: var(--accent);
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 14px 34px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.4);
  transition: all 0.2s ease;
}
.hero-cta-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(249, 115, 22, 0.5);
}

/* 板块通用 */
.section {
  padding: 68px 0;
  border-bottom: 1px solid var(--border-light);
}
.section-alt {
  background-color: var(--bg-alt);
}
.section-header {
  margin-bottom: 40px;
}
.section-tag {
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
  display: block;
}
.section-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
}
.section-desc {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 880px;
}

/* 板块1：指标看板 */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.metric-box {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}
.metric-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary);
}
.metric-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.1;
  margin-bottom: 6px;
}
.metric-num span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-sub);
  margin-left: 4px;
}
.metric-label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}
.metric-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 板块2：服务矩阵与通道拓扑 */
.matrix-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.matrix-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}
.matrix-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.matrix-icon-badge {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 18px;
}
.matrix-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}
.matrix-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}
.matrix-points {
  list-style: none;
  border-top: 1px dashed var(--border-light);
  padding-top: 14px;
}
.matrix-points li {
  font-size: 0.88rem;
  color: var(--text-sub);
  margin-bottom: 8px;
  position: relative;
  padding-left: 16px;
}
.matrix-points li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

/* 板块3：结果对比表格/栏 */
.compare-container {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.compare-table th, .compare-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
}
.compare-table th {
  background: #f8fafc;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}
.compare-table tr:last-child td {
  border-bottom: none;
}
.compare-tag-active {
  display: inline-block;
  padding: 2px 8px;
  background: #dcfce7;
  color: #166534;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 600;
}
.compare-tag-bad {
  display: inline-block;
  padding: 2px 8px;
  background: #fee2e2;
  color: #991b1b;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 600;
}

/* 板块4：演进里程碑 */
.milestone-track {
  position: relative;
  padding-left: 32px;
}
.milestone-track::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 7px;
  width: 2px;
  background: var(--border-color);
}
.milestone-step {
  position: relative;
  margin-bottom: 32px;
}
.milestone-step:last-child {
  margin-bottom: 0;
}
.milestone-dot {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #ffffff;
  box-shadow: 0 0 0 2px var(--primary);
}
.milestone-step h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}
.milestone-step p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 板块5：技术资讯与实测卡片 */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.post-thumb {
  height: 180px;
  overflow: hidden;
  background: #e2e8f0;
}
.post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.post-card:hover .post-thumb img {
  transform: scale(1.04);
}
.post-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.post-meta {
  font-size: 0.8rem;
  color: var(--text-sub);
  margin-bottom: 8px;
}
.post-title {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
  color: var(--text-main);
}
.post-summary {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

/* 板块6：平台保障规范 */
.guarantee-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.guarantee-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px;
  text-align: center;
}
.guarantee-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.guarantee-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* 板块7：快速解答与FAQ */
.faq-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.faq-box {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px;
}
.faq-box h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
}
.faq-box p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* 板块8：转化与频段调度申报表单 */
.booking-section {
  background: #ffffff;
}
.booking-box {
  background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}
.booking-form {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 16px;
  align-items: center;
  margin-top: 24px;
}
.booking-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: #ffffff;
  font-size: 0.95rem;
  color: var(--text-main);
  outline: none;
}
.booking-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.2);
}
.booking-btn {
  background: var(--primary);
  color: #ffffff;
  border: none;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
}
.booking-btn:hover {
  background: var(--primary-dark);
}

/* 页脚 */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 56px 0 24px;
  font-size: 0.9rem;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid #1e293b;
}
.footer-brand h4 {
  font-size: 1.25rem;
  color: #ffffff;
  margin-bottom: 14px;
  font-weight: 700;
}
.footer-brand p {
  line-height: 1.7;
  color: #94a3b8;
  max-width: 420px;
}
.footer-col h5 {
  font-size: 1rem;
  color: #ffffff;
  margin-bottom: 16px;
  font-weight: 600;
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a:hover {
  color: #ffffff;
}
.footer-bottom {
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: #64748b;
}

/* 响应式断点 */
@media (max-width: 1024px) {
  .metrics-row, .guarantee-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .matrix-row, .post-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-category h1 {
    font-size: 2.1rem;
  }
}
@media (max-width: 768px) {
  .hero-category {
    padding: 60px 0 80px;
  }
  .hero-category h1 {
    font-size: 1.8rem;
  }
  .matrix-row, .post-grid, .faq-wrap {
    grid-template-columns: 1fr;
  }
  .booking-form {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .header-top-inner {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}
@media (max-width: 520px) {
  .metrics-row, .guarantee-grid {
    grid-template-columns: 1fr;
  }
}

/* roulang page: category3 */
:root {
      --primary: #0284c7;
      --primary-dark: #0369a1;
      --primary-light: #e0f2fe;
      --accent: #f97316;
      --accent-hover: #ea580c;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-sub: #64748b;
      --bg-body: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --border-color: #cbd5e1;
      --border-light: #e2e8f0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 4px 12px -2px rgba(15,23,42,0.08);
      --shadow-lg: 0 10px 25px -5px rgba(15,23,42,0.12);
      --container-max: 1240px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.65;
      color: var(--text-main);
      background-color: var(--bg-body);
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .site-header {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-sm);
    }
    .header-top {
      border-bottom: 1px solid var(--border-light);
      padding: 12px 0;
    }
    .header-top-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-badge {
      font-size: 0.75rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .header-action-btn {
      background: var(--primary);
      color: #fff;
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      font-size: 0.88rem;
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: background 0.2s;
    }
    .header-action-btn:hover {
      background: var(--primary-dark);
    }
    .header-nav {
      background: #fafafa;
    }
    .nav-list {
      display: flex;
      list-style: none;
      gap: 8px;
      overflow-x: auto;
      padding: 8px 0;
    }
    .nav-item a {
      display: block;
      padding: 6px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
      white-space: nowrap;
    }
    .nav-item a:hover {
      color: var(--primary);
      background: rgba(2, 132, 199, 0.08);
    }
    .nav-item.active a {
      color: var(--primary-dark);
      background: #ffffff;
      box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    }
    .section {
      padding: 64px 0;
      border-bottom: 1px solid var(--border-light);
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-header {
      margin-bottom: 36px;
    }
    .section-title {
      font-size: 1.75rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 900px;
    }
    /* 分类页 Hero：视频官网风视觉，全宽背景与播放/测试CTA */
    .cat-hero-wrap {
      position: relative;
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(2, 132, 199, 0.88) 100%), url('/assets/images/889358598f918913.webp') center/cover no-repeat;
      color: #ffffff;
      padding: 72px 0 80px;
      text-align: center;
    }
    .cat-hero-inner {
      max-width: 860px;
      margin: 0 auto;
    }
    .cat-hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.25);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .cat-hero-title {
      font-size: 2.35rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .cat-hero-lead {
      font-size: 1.05rem;
      line-height: 1.8;
      color: #e2e8f0;
      margin-bottom: 36px;
    }
    .hero-btn-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-main {
      background: var(--accent);
      color: #fff;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(249, 115, 22, 0.4);
      transition: background 0.2s, transform 0.1s;
    }
    .btn-main:hover {
      background: var(--accent-hover);
      transform: translateY(-1px);
    }
    .btn-outline-play {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.4);
      color: #fff;
      padding: 12px 26px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      transition: background 0.2s;
    }
    .btn-outline-play:hover {
      background: rgba(255, 255, 255, 0.2);
    }

    /* 板块 1: 指标看板 (指标流) */
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-box {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      text-align: left;
    }
    .metric-value {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 4px;
      font-variant-numeric: tabular-nums;
    }
    .metric-label {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .metric-desc {
      font-size: 0.85rem;
      color: var(--text-sub);
      line-height: 1.5;
    }

    /* 板块 2: 四路物理信令服务矩阵 */
    .matrix-cards {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .matrix-col {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-top: 4px solid var(--primary);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-sm);
    }
    .matrix-slot-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .matrix-list {
      list-style: none;
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .matrix-list li {
      margin-bottom: 10px;
      padding-left: 14px;
      position: relative;
    }
    .matrix-list li::before {
      content: "•";
      color: var(--primary);
      position: absolute;
      left: 0;
      font-weight: 800;
    }

    /* 板块 3: 架构对比流 (传统切换 vs 4卡无跳转四路并发) */
    .compare-container {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-light);
      font-size: 0.92rem;
    }
    .compare-table th {
      background: #f1f5f9;
      font-weight: 700;
      color: var(--text-main);
    }
    .tag-success {
      color: #059669;
      background: #ecfdf5;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .tag-danger {
      color: #dc2626;
      background: #fef2f2;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    /* 板块 4: 里程碑时间轴 */
    .timeline-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .timeline-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .timeline-step {
      font-size: 0.8rem;
      font-weight: 800;
      color: var(--accent);
      text-transform: uppercase;
      margin-bottom: 8px;
      letter-spacing: 0.5px;
    }
    .timeline-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .timeline-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 5: 核心深度技术资讯列表 */
    .tech-articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .tech-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .tech-card img {
      width: 100%;
      height: 175px;
      object-fit: cover;
    }
    .tech-card-body {
      padding: 20px;
      flex-grow: 1;
    }
    .tech-card-tag {
      display: inline-block;
      font-size: 0.75rem;
      background: var(--primary-light);
      color: var(--primary-dark);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      margin-bottom: 10px;
    }
    .tech-card-title {
      font-size: 1.1rem;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .tech-card-p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 6: 平台高可靠保障保障体系 */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .guarantee-box {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
    }
    .guarantee-icon {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .guarantee-box h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .guarantee-box p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 7: 快速解答与常见疑问 */
    .faq-list {
      max-width: 940px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px 24px;
    }
    .faq-q {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .faq-a {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 8: 转化表单与数据下载预约 (活动转化结构) */
    .form-wrap-outer {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      max-width: 820px;
      margin: 0 auto;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .form-group label {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .form-control {
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s;
    }
    .form-control:focus {
      border-color: var(--primary);
    }
    .form-submit-btn {
      width: 100%;
      background: var(--primary);
      color: #ffffff;
      padding: 14px;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: background 0.2s;
    }
    .form-submit-btn:hover {
      background: var(--primary-dark);
    }

    /* 统一页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 56px 0 28px;
      font-size: 0.9rem;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.15rem;
      margin-bottom: 12px;
      font-weight: 700;
    }
    .footer-brand p {
      line-height: 1.7;
      max-width: 440px;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 0.95rem;
      margin-bottom: 14px;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .metrics-row, .matrix-cards, .timeline-wrap {
        grid-template-columns: repeat(2, 1fr);
      }
      .tech-articles-grid, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .footer-top {
        grid-template-columns: 1fr;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .cat-hero-title {
        font-size: 1.85rem;
      }
    }
    @media (max-width: 520px) {
      .metrics-row, .matrix-cards, .timeline-wrap, .tech-articles-grid, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .compare-table {
        font-size: 0.8rem;
      }
      .compare-table th, .compare-table td {
        padding: 10px 8px;
      }
    }

/* roulang page: category4 */
:root {
            --primary: #0284c7;
            --primary-dark: #0369a1;
            --primary-light: #e0f2fe;
            --accent: #f97316;
            --accent-hover: #ea580c;
            --text-main: #0f172a;
            --text-muted: #475569;
            --text-sub: #64748b;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-alt: #f1f5f9;
            --border-color: #cbd5e1;
            --border-light: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 12px -2px rgba(15,23,42,0.08);
            --shadow-lg: 0 10px 25px -5px rgba(15,23,42,0.12);
            --container-max: 1240px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.65;
            color: var(--text-main);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 顶部导航 */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }

        .header-top {
            border-bottom: 1px solid var(--border-light);
            padding: 12px 0;
        }

        .header-top-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .brand-logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .brand-badge {
            font-size: 0.75rem;
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        .header-action-btn {
            background: var(--primary);
            color: #fff;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.2s;
        }

        .header-action-btn:hover {
            background: var(--primary-dark);
        }

        .header-nav {
            background: #fafafa;
        }

        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
            overflow-x: auto;
            padding: 8px 0;
        }

        .nav-item a {
            display: block;
            padding: 6px 14px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }

        .nav-item a:hover {
            color: var(--primary);
            background: rgba(2, 132, 199, 0.08);
        }

        .nav-item.active a {
            color: var(--primary-dark);
            background: #ffffff;
            box-shadow: 0 1px 2px rgba(0,0,0,0.05);
        }

        /* 板块通用 */
        .section {
            padding: 60px 0;
            border-bottom: 1px solid var(--border-light);
        }

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

        .section-header {
            margin-bottom: 32px;
        }

        .section-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            letter-spacing: -0.5px;
        }

        .section-desc {
            font-size: 0.98rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 880px;
        }

        /* 杂志分栏 Hero 首屏 (蓝图要求) */
        .magazine-hero {
            padding: 48px 0 60px;
            background: #ffffff;
            border-bottom: 1px solid var(--border-light);
        }

        .magazine-grid {
            display: grid;
            grid-template-columns: 1.25fr 0.75fr;
            gap: 36px;
            align-items: center;
        }

        .magazine-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .magazine-title {
            font-size: 2.35rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: -0.8px;
        }

        .magazine-lead {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 24px;
        }

        .magazine-actions {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        .btn-solid {
            background: var(--primary);
            color: #ffffff;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: background 0.2s;
        }

        .btn-solid:hover {
            background: var(--primary-dark);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.2s;
        }

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

        .magazine-card {
            background: var(--bg-alt);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .magazine-card-img {
            height: 220px;
            width: 100%;
            object-fit: cover;
        }

        .magazine-card-content {
            padding: 24px;
        }

        .magazine-card-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .magazine-card-desc {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .magazine-card-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-sub);
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }

        /* 布局变体 E 序列落实：1.指标看板 */
        .kpi-board {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .kpi-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .kpi-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary);
        }

        .kpi-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.1;
            margin-bottom: 6px;
            letter-spacing: -0.5px;
        }

        .kpi-value span {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            margin-left: 2px;
        }

        .kpi-label {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .kpi-detail {
            font-size: 0.82rem;
            color: var(--text-sub);
            line-height: 1.5;
        }

        /* 2. 服务矩阵（协议直连通道） */
        .matrix-board {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .matrix-box {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 26px;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s;
        }

        .matrix-box:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .matrix-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
        }

        .matrix-badge {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 8px;
            border-radius: 4px;
        }

        .matrix-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .matrix-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 18px;
        }

        .matrix-features {
            list-style: none;
            border-top: 1px dashed var(--border-light);
            padding-top: 14px;
        }

        .matrix-features li {
            font-size: 0.85rem;
            color: var(--text-sub);
            margin-bottom: 8px;
            position: relative;
            padding-left: 16px;
        }

        .matrix-features li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        /* 3. 结果对比 (直连模式 vs 传统跳转) */
        .compare-table-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            font-size: 0.92rem;
            border-bottom: 1px solid var(--border-light);
        }

        .compare-table th {
            background: #f1f5f9;
            font-weight: 700;
            color: var(--text-main);
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table td.highlight {
            color: var(--primary-dark);
            font-weight: 600;
            background: rgba(2, 132, 199, 0.03);
        }

        .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 6px;
        }

        .status-dot.good {
            background: #10b981;
        }

        .status-dot.bad {
            background: #ef4444;
        }

        /* 4. 协议演进里程碑 */
        .timeline-flex {
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: relative;
        }

        .timeline-step {
            display: grid;
            grid-template-columns: 140px 1fr;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }

        .step-version {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--primary);
        }

        .step-version span {
            display: block;
            font-size: 0.75rem;
            font-weight: 500;
            color: var(--text-sub);
        }

        .step-desc h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-main);
        }

        .step-desc p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 5. 协议资讯列表与实施文档 */
        .docs-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .doc-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .doc-img-box {
            height: 160px;
            background: #e2e8f0;
            overflow: hidden;
        }

        .doc-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .doc-body {
            padding: 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .doc-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 8px;
        }

        .doc-heading {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .doc-text {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .doc-link {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 6. 平台保障体系 */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .guarantee-card {
            background: #ffffff;
            border-top: 3px solid var(--primary);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            border-left: 1px solid var(--border-light);
            border-right: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .guarantee-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .guarantee-card p {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 7. 快速解答与技术要点 */
        .quick-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .quick-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 22px;
        }

        .quick-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary-dark);
        }

        .quick-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 8. 常见问题 FAQ (可折叠样式或标准板块) */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-box {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px 24px;
        }

        .faq-q {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-q::before {
            content: "Q";
            display: inline-block;
            width: 22px;
            height: 22px;
            background: var(--primary-light);
            color: var(--primary-dark);
            text-align: center;
            line-height: 22px;
            font-size: 0.8rem;
            border-radius: 4px;
            font-weight: 800;
        }

        .faq-a {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            padding-left: 32px;
        }

        /* 9. 转化表单与数据下发区 */
        .form-section {
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
            margin-top: 20px;
        }

        .form-header-text {
            text-align: center;
            margin-bottom: 30px;
        }

        .form-header-text h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .form-header-text p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .protocol-form {
            max-width: 680px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }

        .form-group-full {
            grid-column: span 2;
        }

        .form-label {
            display: block;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .form-input, .form-select {
            width: 100%;
            padding: 11px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            color: var(--text-main);
            background: #ffffff;
            outline: none;
            transition: border-color 0.2s;
        }

        .form-input:focus, .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
        }

        .btn-submit {
            grid-column: span 2;
            background: var(--accent);
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            padding: 13px;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background 0.2s;
            margin-top: 10px;
        }

        .btn-submit:hover {
            background: var(--accent-hover);
        }

        /* 统一页脚 */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 56px 0 28px;
            font-size: 0.9rem;
            border-top: 1px solid #1e293b;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h4 {
            color: #ffffff;
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .footer-brand p {
            color: #94a3b8;
            font-size: 0.88rem;
            line-height: 1.7;
            max-width: 440px;
        }

        .footer-col h5 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
        }

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

        .footer-links a {
            color: #94a3b8;
            font-size: 0.88rem;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            text-align: center;
            font-size: 0.82rem;
            color: #64748b;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .magazine-grid {
                grid-template-columns: 1fr;
            }
            .kpi-board {
                grid-template-columns: repeat(2, 1fr);
            }
            .matrix-board {
                grid-template-columns: repeat(2, 1fr);
            }
            .docs-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-top-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .magazine-title {
                font-size: 1.85rem;
            }
            .matrix-board {
                grid-template-columns: 1fr;
            }
            .docs-grid {
                grid-template-columns: 1fr;
            }
            .quick-grid {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .timeline-step {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .protocol-form {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .btn-submit {
                grid-column: span 1;
            }
        }

        @media (max-width: 520px) {
            .kpi-board {
                grid-template-columns: 1fr;
            }
            .form-section {
                padding: 24px 16px;
            }
        }