/* roulang page: index */
:root {
      --primary: #0F172A;
      --secondary: #1E293B;
      --accent: #4F46E5;
      --accent-green: #10B981;
      --bg-surface: #F8FAFC;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: #334155;
      background-color: #FFFFFF;
      font-feature-settings: 'tnum';
      -webkit-font-smoothing: antialiased;
    }
    .stat-number {
      font-feature-settings: 'tnum';
      font-variant-numeric: tabular-nums;
    }
    .hero-bg-overlay {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(11, 15, 25, 0.96) 100%);
    }
    .custom-card {
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      border: 1px solid var(--border-color);
    }
    .custom-card:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
      border-color: #CBD5E1;
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details summary {
      list-style: none;
    }