/* roulang page: index */
:root {
      --primary: #1e40af;
      --primary-hover: #1d4ed8;
      --accent: #059669;
      --bg-light: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --card-hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      overflow-x: hidden;
    }
    .hero-bg-overlay {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 64, 175, 0.88) 100%);
    }
    .custom-card {
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card:hover {
      box-shadow: var(--card-hover-shadow);
      transform: translateY(-3px);
    }