/* roulang page: index */
:root {
      --bg-dark: #070B19;
      --bg-navy: #0B132B;
      --glow-cyan: #00F2FE;
      --glow-blue: #4FACFE;
      --border-glass: rgba(79, 172, 254, 0.2);
    }
    body {
      background-color: var(--bg-dark);
      color: #E2E8F0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: rgba(15, 23, 42, 0.65);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid rgba(255, 255, 255, 0.08);
      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    }
    .glass-card-hover {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card-hover:hover {
      border-color: rgba(0, 242, 254, 0.4);
      transform: translateY(-4px);
      box-shadow: 0 12px 36px -8px rgba(0, 242, 254, 0.25);
    }
    .glow-btn-primary {
      background: linear-gradient(135deg, #00F2FE 0%, #4FACFE 100%);
      color: #070B19;
      box-shadow: 0 0 20px rgba(0, 242, 254, 0.35);
      transition: all 0.3s ease;
    }
    .glow-btn-primary:hover {
      box-shadow: 0 0 28px rgba(0, 242, 254, 0.65);
      transform: translateY(-2px);
    }
    .text-glow {
      text-shadow: 0 0 12px rgba(0, 242, 254, 0.5);
    }
    details summary::-webkit-details-marker {
      display: none;
    }