/* roulang page: index */
:root {
      --primary-color: #1d4ed8;
      --primary-hover: #2563eb;
      --bg-light: #f8fafc;
      --card-border: #e2e8f0;
      --text-main: #0f172a;
      --text-muted: #64748b;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
    }
    .hover-lift {
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .hover-lift:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 28px -4px rgba(29, 78, 216, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);
    }
    .nav-dropdown:hover .nav-dropdown-menu {
      display: grid;
    }

/* roulang page: category1 */
:root {
      --primary-color: #1d4ed8;
      --primary-hover: #2563eb;
      --bg-light: #f8fafc;
      --card-border: #e2e8f0;
      --text-main: #0f172a;
      --text-muted: #64748b;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
    }
    .dropdown-menu {
      display: none;
    }
    .group:hover .dropdown-menu {
      display: grid;
    }