/* roulang page: index */
:root {
            --primary: #0284c7;
            --primary-hover: #0369a1;
            --bg-light: #f8fafc;
            --border-color: #e2e8f0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            background-color: var(--bg-light);
            color: #1e293b;
        }
        .hero-banner {
            background: linear-gradient(135deg, #0b192c 0%, #1e3a8a 50%, #0369a1 100%);
        }
        .custom-card {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: 0.75rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .custom-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 20px -3px rgba(2, 132, 199, 0.12), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            border-color: #bae6fd;
        }

/* roulang page: category1 */
:root {
      --primary: #0284c7;
      --primary-hover: #0369a1;
      --bg-light: #f8fafc;
      --border-color: #e2e8f0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-light);
      color: #1e293b;
    }
    .custom-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 0.75rem;
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 20px -3px rgba(2, 132, 199, 0.12), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
      border-color: #bae6fd;
    }
    .roadmap-node {
      position: relative;
    }
    .roadmap-node::after {
      content: '';
      position: absolute;
      top: 50%;
      right: -1rem;
      width: 2rem;
      height: 2px;
      background-color: #cbd5e1;
      z-index: 1;
    }
    .roadmap-node:last-child::after {
      display: none;
    }
    @media (max-width: 768px) {
      .roadmap-node::after {
        display: none;
      }
    }