/* roulang page: index */
:root {
      --primary: #1E40AF;
      --primary-hover: #1D4ED8;
      --primary-light: #EFF6FF;
      --accent-blue: #0284C7;
      --accent-teal: #0D9488;
      --surface-white: #FFFFFF;
      --surface-gray: #F8FAFC;
      --surface-muted: #F1F5F9;
      --text-dark: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-subtle: #E2E8F0;
      --border-focus: #93C5FD;
      --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
      --shadow-card: 0 10px 25px -5px rgba(15, 23, 42, 0.04), 0 8px 10px -6px rgba(15, 23, 42, 0.02);
      --shadow-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --container-max: 1240px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      background-color: var(--surface-white);
      color: var(--text-body);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
    }

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

    /* 顶部居中导航体系 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .nav-group {
      display: flex;
      align-items: center;
      gap: 28px;
      flex: 1;
    }
    .nav-left {
      justify-content: flex-start;
    }
    .nav-right {
      justify-content: flex-end;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-body);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .brand-logo {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      padding: 0 20px;
    }
    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
      white-space: nowrap;
    }
    .brand-sub {
      font-size: 0.72rem;
      font-weight: 600;
      color: var(--accent-teal);
      letter-spacing: 1px;
      text-transform: uppercase;
    }
    .header-action-btn {
      display: inline-flex;
      align-items: center;
      background: var(--primary);
      color: #fff;
      font-size: 0.88rem;
      font-weight: 600;
      padding: 8px 18px;
      border-radius: var(--radius-full);
      margin-left: 12px;
      transition: background-color 0.2s;
    }
    .header-action-btn:hover {
      background: var(--primary-hover);
      color: #fff;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      padding: 8px;
      cursor: pointer;
    }

    /* 板块排版通用基底 */
    .section {
      padding-top: 84px;
      padding-bottom: 84px;
      border-bottom: 1px solid var(--border-subtle);
    }
    .section-alt {
      background-color: var(--surface-gray);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--primary);
      background-color: var(--primary-light);
      padding: 4px 12px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 1.95rem;
      font-weight: 800;
      color: var(--text-dark);
      letter-spacing: -0.5px;
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 1.02rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Hero 首屏 */
    .hero-section {
      position: relative;
      background-color: #FAFCFF;
      background-image: linear-gradient(180deg, rgba(239, 246, 255, 0.6) 0%, rgba(255, 255, 255, 0.95) 100%), url('/assets/images/606f816730efbd80.jpg');
      background-size: cover;
      background-position: center;
      padding-top: 90px;
      padding-bottom: 100px;
      border-bottom: 1px solid var(--border-subtle);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.25;
      letter-spacing: -0.8px;
      margin-bottom: 20px;
    }
    .hero-lead {
      font-size: 1.08rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 32px;
    }
    .hero-badge-item {
      display: inline-flex;
      align-items: center;
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      color: var(--text-dark);
      font-weight: 500;
      box-shadow: var(--shadow-sm);
    }
    .hero-badge-item span {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-teal);
      margin-right: 8px;
    }
    .hero-btn-row {
      display: flex;
      gap: 16px;
    }
    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: var(--primary);
      color: #fff;
      font-weight: 600;
      font-size: 0.96rem;
      padding: 12px 26px;
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
      box-shadow: 0 4px 12px rgba(30, 64, 175, 0.2);
    }
    .btn-main:hover {
      background-color: var(--primary-hover);
      transform: translateY(-1px);
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: #FFFFFF;
      color: var(--text-dark);
      font-weight: 600;
      font-size: 0.96rem;
      padding: 12px 24px;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
    }
    .btn-secondary:hover {
      background-color: var(--surface-gray);
      border-color: #CBD5E1;
    }

    /* 看板网格卡片 */
    .dashboard-panel {
      background: #FFFFFF;
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-card);
    }
    .panel-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-subtle);
      padding-bottom: 16px;
      margin-bottom: 20px;
    }
    .panel-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-dark);
    }
    .panel-status {
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--accent-teal);
      background: #CCFBF1;
      padding: 3px 10px;
      border-radius: var(--radius-full);
    }
    .dashboard-metrics-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .metric-box {
      background: var(--surface-gray);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 18px;
      transition: transform 0.2s;
    }
    .metric-box:hover {
      transform: translateY(-2px);
      background: #F8FAFC;
    }
    .metric-num {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 4px;
    }
    .metric-label {
      font-size: 0.82rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 分类入口卡片 */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .category-card {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px;
      position: relative;
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .category-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--border-focus);
    }
    .category-num {
      position: absolute;
      top: 20px;
      right: 20px;
      font-size: 0.88rem;
      font-weight: 800;
      color: var(--accent-teal);
      background: #F0FDFA;
      padding: 2px 10px;
      border-radius: var(--radius-full);
    }
    .category-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-top: 12px;
      margin-bottom: 12px;
    }
    .category-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }
    .category-link-btn {
      display: inline-flex;
      align-items: center;
      font-size: 0.86rem;
      font-weight: 600;
      color: var(--primary);
    }
    .category-link-btn:hover {
      color: var(--primary-hover);
      text-decoration: underline;
    }

    /* 矩阵六宫格 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .matrix-card {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
    }
    .matrix-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      border-color: var(--accent-blue);
    }
    .matrix-card-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 14px;
    }
    .matrix-icon-badge {
      width: 40px;
      height: 40px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
    }
    .matrix-status-tag {
      font-size: 0.75rem;
      padding: 2px 8px;
      background: var(--surface-gray);
      color: var(--text-muted);
      border-radius: var(--radius-full);
      border: 1px solid var(--border-subtle);
    }
    .matrix-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .matrix-card p {
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .matrix-specs-list {
      list-style: none;
      border-top: 1px dashed var(--border-subtle);
      padding-top: 12px;
    }
    .matrix-specs-list li {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 4px;
      display: flex;
      align-items: center;
    }
    .matrix-specs-list li::before {
      content: "•";
      color: var(--primary);
      font-weight: bold;
      margin-right: 6px;
    }

    /* 对比专区表格 */
    .table-container {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: var(--shadow-card);
    }
    .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-subtle);
    }
    .compare-table th {
      background-color: var(--surface-gray);
      color: var(--text-dark);
      font-weight: 700;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table tr:hover td {
      background-color: #FAFCFF;
    }
    .highlight-cell {
      color: var(--primary);
      font-weight: 700;
      background-color: #F8FAFC;
    }

    /* 里程碑时间线 */
    .timeline-container {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
      padding: 20px 0;
    }
    .timeline-container::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: var(--border-subtle);
      transform: translateX(-50%);
    }
    .timeline-item {
      position: relative;
      margin-bottom: 36px;
      width: 50%;
      padding: 0 32px;
    }
    .timeline-item:nth-child(odd) {
      left: 0;
      text-align: right;
    }
    .timeline-item:nth-child(even) {
      left: 50%;
      text-align: left;
    }
    .timeline-dot {
      position: absolute;
      top: 6px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--primary);
      border: 3px solid #FFFFFF;
      box-shadow: 0 0 0 2px var(--primary);
    }
    .timeline-item:nth-child(odd) .timeline-dot {
      right: -8px;
    }
    .timeline-item:nth-child(even) .timeline-dot {
      left: -8px;
    }
    .timeline-content {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-card);
    }
    .timeline-tag {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent-teal);
      margin-bottom: 6px;
    }
    .timeline-content h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .timeline-content p {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 资讯板块 */
    .news-grid {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 32px;
      align-items: stretch;
    }
    .news-spotlight {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
    }
    .spotlight-img {
      width: 100%;
      height: 240px;
      object-fit: cover;
    }
    .spotlight-body {
      padding: 28px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .spotlight-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }
    .news-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 2px 8px;
      border-radius: var(--radius-sm);
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .spotlight-title {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .spotlight-desc {
      font-size: 0.9rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .news-item {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }
    .news-item:hover {
      border-color: var(--border-focus);
      box-shadow: var(--shadow-card);
      transform: translateX(4px);
    }
    .news-item h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .news-item p {
      font-size: 0.84rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 安全准则盾牌卡片 */
    .shield-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .shield-card {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-card);
    }
    .shield-icon {
      width: 48px;
      height: 48px;
      margin: 0 auto 16px;
      border-radius: 50%;
      background: #F0FDFA;
      color: var(--accent-teal);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      border: 1px solid #CCFBF1;
    }
    .shield-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .shield-card p {
      font-size: 0.84rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 场景映射 Tab 结构 */
    .scenario-container {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-card);
    }
    .scenario-nav {
      display: flex;
      gap: 12px;
      border-bottom: 1px solid var(--border-subtle);
      padding-bottom: 16px;
      margin-bottom: 32px;
    }
    .scenario-btn {
      background: none;
      border: 1px solid var(--border-subtle);
      padding: 8px 20px;
      border-radius: var(--radius-full);
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-body);
      cursor: pointer;
      transition: all 0.2s;
    }
    .scenario-btn.active, .scenario-btn:hover {
      background: var(--primary);
      color: #FFFFFF;
      border-color: var(--primary);
    }
    .scenario-content {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .scenario-text h3 {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 14px;
    }
    .scenario-text p {
      font-size: 0.92rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .scenario-points {
      list-style: none;
    }
    .scenario-points li {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
    }
    .scenario-points li::before {
      content: "✓";
      color: var(--accent-teal);
      font-weight: 800;
      margin-right: 8px;
    }
    .scenario-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
    }

    /* 交互解答双列卡 */
    .quick-qa-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .quick-qa-card {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-card);
    }
    .quick-qa-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .quick-qa-card h4 span {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.78rem;
    }
    .quick-qa-card p {
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 深度问答折叠 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-box {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 22px 26px;
      box-shadow: var(--shadow-sm);
    }
    .faq-title {
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
      cursor: pointer;
    }
    .faq-body {
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.65;
    }

    /* 客户见证 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .score-stars {
      color: #F59E0B;
      font-size: 0.95rem;
      letter-spacing: 2px;
      margin-bottom: 14px;
    }
    .testimonial-quote {
      font-size: 0.9rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 20px;
      font-style: italic;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-subtle);
      padding-top: 14px;
    }
    .author-avatar {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--surface-muted);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
    }
    .author-info h5 {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-dark);
    }
    .author-info span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 终端转化表单 */
    .conversion-panel {
      background: linear-gradient(135deg, #FFFFFF 0%, #F8FAFC 100%);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 48px 40px;
      max-width: 820px;
      margin: 0 auto;
      box-shadow: var(--shadow-hover);
    }
    .conversion-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 28px;
    }
    .form-full {
      grid-column: span 2;
    }
    .form-label {
      display: block;
      font-size: 0.84rem;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      background: #FFFFFF;
      font-size: 0.9rem;
      color: var(--text-dark);
      transition: border-color 0.2s;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
    }
    .form-privacy-note {
      font-size: 0.78rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-top: 10px;
      text-align: center;
    }

    /* 页脚 */
    .site-footer {
      background-color: #0F172A;
      color: #94A3B8;
      padding-top: 64px;
      padding-bottom: 40px;
      font-size: 0.88rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .footer-brand p {
      line-height: 1.6;
      color: #94A3B8;
      font-size: 0.85rem;
      margin-bottom: 16px;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
      text-decoration: underline;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 28px;
      text-align: center;
      font-size: 0.8rem;
      color: #64748B;
    }

    /* 移动端与自适应处理 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .category-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .news-grid {
        grid-template-columns: 1fr;
      }
      .shield-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-group {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .category-grid {
        grid-template-columns: 1fr;
      }
      .matrix-grid {
        grid-template-columns: 1fr;
      }
      .timeline-container::before {
        left: 20px;
      }
      .timeline-item {
        width: 100%;
        left: 0 !important;
        text-align: left !important;
        padding-left: 50px;
        padding-right: 0;
      }
      .timeline-item .timeline-dot {
        left: 12px !important;
      }
      .scenario-content {
        grid-template-columns: 1fr;
      }
      .quick-qa-grid {
        grid-template-columns: 1fr;
      }
      .testimonials-grid {
        grid-template-columns: 1fr;
      }
      .conversion-form {
        grid-template-columns: 1fr;
      }
      .form-full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 2rem;
      }
    }

/* roulang page: category1 */
:root {
    --primary: #1E40AF;
    --primary-hover: #1D4ED8;
    --primary-light: #EFF6FF;
    --accent-blue: #0284C7;
    --accent-teal: #0D9488;
    --surface-white: #FFFFFF;
    --surface-gray: #F8FAFC;
    --surface-muted: #F1F5F9;
    --text-dark: #0F172A;
    --text-body: #334155;
    --text-muted: #64748B;
    --border-subtle: #E2E8F0;
    --border-focus: #93C5FD;
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-card: 0 10px 25px -5px rgba(15, 23, 42, 0.04), 0 8px 10px -6px rgba(15, 23, 42, 0.02);
    --shadow-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --container-max: 1240px;
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  }
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    scroll-behavior: smooth;
    font-size: 16px;
  }
  body {
    font-family: var(--font-stack);
    background-color: var(--surface-white);
    color: var(--text-body);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
  }
  a {
    color: inherit;
    text-decoration: none;
    transition: all 0.2s ease;
  }
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
  }
  .container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
  }
  /* 顶部居中导航体系 */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-subtle);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
  }
  .nav-group {
    display: flex;
    align-items: center;
    gap: 28px;
    flex: 1;
  }
  .nav-left {
    justify-content: flex-start;
  }
  .nav-right {
    justify-content: flex-end;
  }
  .nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-body);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
  }
  .nav-link:hover, .nav-link.active {
    color: var(--primary);
    background-color: var(--primary-light);
  }
  .brand-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0 20px;
  }
  .brand-name {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
    white-space: nowrap;
  }
  .brand-sub {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent-teal);
    letter-spacing: 1px;
    text-transform: uppercase;
  }
  .header-action-btn {
    display: inline-flex;
    align-items: center;
    background: var(--primary);
    color: #fff;
    font-size: 0.88rem;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: var(--radius-full);
    margin-left: 12px;
    transition: background-color 0.2s;
  }
  .header-action-btn:hover {
    background: var(--primary-hover);
    color: #fff;
  }
  .mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--text-dark);
    cursor: pointer;
  }

  /* 板块基础架构 */
  .section {
    padding-top: 72px;
    padding-bottom: 72px;
    border-bottom: 1px solid var(--border-subtle);
  }
  .section-alt {
    background-color: var(--surface-gray);
  }
  .section-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--primary);
    background-color: var(--primary-light);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    margin-bottom: 12px;
    letter-spacing: 0.5px;
  }
  .section-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: -0.5px;
    line-height: 1.3;
    margin-bottom: 12px;
  }
  .section-desc {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 820px;
  }
  .section-desc-center {
    margin-left: auto;
    margin-right: auto;
  }

  /* 板块 1: 分类标头区 (H1 + 资源指标徽章) */
  .cat-header-section {
    background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
    padding-top: 48px;
    padding-bottom: 56px;
    border-bottom: 1px solid var(--border-subtle);
  }
  .breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 20px;
  }
  .breadcrumb-nav a:hover {
    color: var(--primary);
  }
  .breadcrumb-sep {
    color: #CBD5E1;
  }
  .cat-header-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.9fr;
    gap: 40px;
    align-items: center;
  }
  .cat-header-content h1 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.25;
    margin-bottom: 14px;
    letter-spacing: -0.5px;
  }
  .cat-header-badges {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .cat-badge-card {
    background: #FFFFFF;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .badge-val {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
  }
  .badge-lbl {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
  }

  /* 搜索框居中面板 (硬性蓝图：资源下载站，搜索框居中 + 热门分类快捷入口) */
  .search-console-box {
    background: #FFFFFF;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-top: 36px;
    box-shadow: var(--shadow-card);
  }
  .search-input-wrap {
    display: flex;
    max-width: 720px;
    margin: 0 auto;
    border: 2px solid var(--border-subtle);
    border-radius: var(--radius-full);
    overflow: hidden;
    background: #FFFFFF;
    transition: border-color 0.2s;
  }
  .search-input-wrap:focus-within {
    border-color: var(--primary);
  }
  .search-field {
    flex: 1;
    border: none;
    padding: 14px 24px;
    font-size: 0.95rem;
    outline: none;
    color: var(--text-dark);
  }
  .search-submit-btn {
    background: var(--primary);
    color: #FFFFFF;
    border: none;
    padding: 0 28px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
  }
  .search-submit-btn:hover {
    background: var(--primary-hover);
  }
  .hot-tags-row {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
  }
  .hot-tags-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
  }
  .hot-tag-pill {
    font-size: 0.82rem;
    padding: 4px 12px;
    background: var(--surface-muted);
    border-radius: var(--radius-full);
    color: var(--text-body);
    transition: all 0.2s;
  }
  .hot-tag-pill:hover {
    background: var(--primary-light);
    color: var(--primary);
  }

  /* 板块 2: 多重属性筛选面板 */
  .filter-panel-wrap {
    background: #FFFFFF;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-sm);
  }
  .filter-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border-subtle);
  }
  .filter-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .filter-label {
    min-width: 90px;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-dark);
  }
  .filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }
  .filter-chip {
    font-size: 0.85rem;
    padding: 5px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-body);
    background: var(--surface-muted);
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s ease;
  }
  .filter-chip.active, .filter-chip:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--border-focus);
    font-weight: 600;
  }

  /* 板块 3: 核心分类项目图文列表 (3列响应式网格) */
  .cat-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
  .cat-item-card {
    background: #FFFFFF;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
  }
  .cat-item-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-focus);
  }
  .cat-card-img-wrap {
    position: relative;
    height: 190px;
    overflow: hidden;
    background-color: var(--surface-muted);
  }
  .cat-card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
  }
  .cat-item-card:hover .cat-card-img-wrap img {
    transform: scale(1.05);
  }
  .cat-card-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(15, 23, 42, 0.75);
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    backdrop-filter: blur(4px);
  }
  .cat-card-body {
    padding: 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }
  .cat-card-meta {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
  }
  .cat-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
    margin-bottom: 10px;
  }
  .cat-card-summary {
    font-size: 0.88rem;
    color: var(--text-body);
    line-height: 1.6;
    margin-bottom: 18px;
    flex: 1;
  }
  .cat-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border-subtle);
    padding-top: 14px;
  }
  .cat-card-status {
    font-size: 0.8rem;
    color: var(--accent-teal);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .cat-card-status::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent-teal);
  }
  .cat-view-link {
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }
  .cat-view-link:hover {
    color: var(--primary-hover);
  }
  .list-pagination-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
  }
  .page-num-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    background: #FFFFFF;
    font-size: 0.88rem;
    color: var(--text-body);
    font-weight: 500;
  }
  .page-num-btn.active, .page-num-btn:hover {
    background: var(--primary);
    color: #FFFFFF;
    border-color: var(--primary);
  }

  /* 板块 4: 重点区域综合实施支撑解析 (左右双栏图解与细则) */
  .impl-split-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
  }
  .impl-diagram-card {
    background: #FFFFFF;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-card);
  }
  .diagram-step-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    position: relative;
    padding-bottom: 28px;
  }
  .diagram-step-item:last-child {
    padding-bottom: 0;
  }
  .diagram-step-item:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 36px;
    left: 17px;
    bottom: 0;
    width: 2px;
    background: var(--border-subtle);
  }
  .step-num-pill {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 800;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    z-index: 1;
    border: 2px solid #FFFFFF;
    box-shadow: 0 0 0 1px var(--primary);
  }
  .step-info-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
  }
  .step-info-desc {
    font-size: 0.88rem;
    color: var(--text-body);
    line-height: 1.6;
  }
  .impl-text-pane h3 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.35;
    margin-bottom: 16px;
  }
  .impl-text-pane p {
    font-size: 0.98rem;
    color: var(--text-body);
    line-height: 1.75;
    margin-bottom: 24px;
  }
  .impl-checklist {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .impl-checklist li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.92rem;
    color: var(--text-body);
  }
  .impl-check-icon {
    display: inline-flex;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-teal);
    color: #FFFFFF;
    font-size: 0.75rem;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
  }

  /* 板块 5: 类似赛事排行榜 (Leaderboard) 积分榜式排版 */
  .leaderboard-container {
    background: #FFFFFF;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
  }
  .board-table-header {
    display: grid;
    grid-template-columns: 80px 2.2fr 1.2fr 1fr 1fr 1fr;
    padding: 16px 24px;
    background: var(--surface-muted);
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-subtle);
  }
  .board-table-row {
    display: grid;
    grid-template-columns: 80px 2.2fr 1.2fr 1fr 1fr 1fr;
    padding: 18px 24px;
    align-items: center;
    border-bottom: 1px solid var(--border-subtle);
    transition: background-color 0.2s ease;
  }
  .board-table-row:last-child {
    border-bottom: none;
  }
  .board-table-row:hover {
    background-color: var(--primary-light);
  }
  .rank-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    font-weight: 800;
    font-size: 0.9rem;
    background: var(--surface-muted);
    color: var(--text-dark);
  }
  .rank-top1 {
    background: #FEF3C7;
    color: #B45309;
    border: 1px solid #FDE68A;
  }
  .rank-top2 {
    background: #E0E7FF;
    color: #4338CA;
    border: 1px solid #C7D2FE;
  }
  .rank-top3 {
    background: #DCFCE7;
    color: #15803D;
    border: 1px solid #BBF7D0;
  }
  .node-name-box {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }
  .node-title-text {
    font-size: 0.96rem;
    font-weight: 700;
    color: var(--text-dark);
  }
  .node-sub-text {
    font-size: 0.78rem;
    color: var(--text-muted);
  }
  .node-stat-item {
    font-size: 0.9rem;
    color: var(--text-body);
    font-weight: 600;
  }
  .score-badge {
    display: inline-block;
    padding: 4px 10px;
    background: #F0FDF4;
    color: #15803D;
    border-radius: var(--radius-full);
    font-size: 0.84rem;
    font-weight: 700;
  }

  /* 板块 6: 技术规格与接入指引 */
  .spec-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  .spec-card-dark {
    background: #0F172A;
    color: #FFFFFF;
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
  .spec-card-top {
    margin-bottom: 20px;
  }
  .spec-code-tag {
    display: inline-block;
    font-family: monospace;
    font-size: 0.78rem;
    color: var(--accent-teal);
    background: rgba(13, 148, 136, 0.15);
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 12px;
  }
  .spec-card-dark h4 {
    font-size: 1.12rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #F8FAFC;
  }
  .spec-card-dark p {
    font-size: 0.84rem;
    color: #94A3B8;
    line-height: 1.6;
  }
  .spec-card-bot {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .spec-param-lbl {
    font-size: 0.76rem;
    color: #64748B;
  }
  .spec-param-val {
    font-size: 0.85rem;
    font-weight: 600;
    color: #E2E8F0;
  }

  /* 板块 7: 轻量横向通栏 CTA */
  .cta-banner-strip {
    background: linear-gradient(90deg, #1E40AF 0%, #1D4ED8 60%, #0284C7 100%);
    border-radius: var(--radius-lg);
    padding: 44px 48px;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-hover);
  }
  .cta-text-side h3 {
    font-size: 1.7rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 8px;
  }
  .cta-text-side p {
    font-size: 0.96rem;
    color: rgba(255, 255, 255, 0.88);
    max-width: 680px;
    line-height: 1.6;
  }
  .cta-action-side {
    display: flex;
    gap: 16px;
    flex-shrink: 0;
  }
  .btn-white-solid {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #FFFFFF;
    color: var(--primary);
    font-weight: 700;
    font-size: 0.95rem;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }
  .btn-white-solid:hover {
    background: #F8FAFC;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
  }
  .btn-outline-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: #FFFFFF;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    border: 1.5px solid rgba(255, 255, 255, 0.6);
    transition: all 0.2s ease;
  }
  .btn-outline-ghost:hover {
    border-color: #FFFFFF;
    background: rgba(255, 255, 255, 0.1);
  }

  /* 页脚系统 (完全复用设计标准) */
  .site-footer {
    background: #0B132B;
    color: #94A3B8;
    padding-top: 64px;
    padding-bottom: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
  }
  .footer-brand h4 {
    color: #FFFFFF;
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -0.3px;
  }
  .footer-brand p {
    font-size: 0.88rem;
    line-height: 1.7;
    margin-bottom: 16px;
    color: #94A3B8;
  }
  .footer-col h5 {
    color: #FFFFFF;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: 0.3px;
  }
  .footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .footer-links a {
    font-size: 0.86rem;
    color: #94A3B8;
  }
  .footer-links a:hover {
    color: #FFFFFF;
    padding-left: 3px;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    text-align: center;
    font-size: 0.82rem;
    color: #64748B;
  }

  /* 响应式媒体查询断点 */
  @media (max-width: 1024px) {
    .cat-grid-3 {
      grid-template-columns: repeat(2, 1fr);
    }
    .spec-grid-4 {
      grid-template-columns: repeat(2, 1fr);
    }
    .board-table-header, .board-table-row {
      grid-template-columns: 60px 2fr 1fr 1fr;
    }
    .col-hide-md {
      display: none;
    }
    .impl-split-wrap {
      grid-template-columns: 1fr;
    }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }
  @media (max-width: 768px) {
    .nav-group {
      display: none;
    }
    .mobile-menu-toggle {
      display: block;
    }
    .cat-header-grid {
      grid-template-columns: 1fr;
    }
    .cat-header-content h1 {
      font-size: 1.75rem;
    }
    .cat-grid-3 {
      grid-template-columns: 1fr;
    }
    .cta-banner-strip {
      flex-direction: column;
      align-items: flex-start;
      gap: 24px;
      padding: 32px 24px;
    }
    .board-table-header {
      display: none;
    }
    .board-table-row {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
      padding: 16px;
    }
    .footer-grid {
      grid-template-columns: 1fr;
    }
  }