/* roulang page: index */
:root {
      --bg-main: #070b14;
      --bg-card: rgba(15, 23, 42, 0.65);
      --border-card: rgba(255, 255, 255, 0.1);
      --glow-blue: rgba(0, 210, 255, 0.25);
    }
    body {
      background-color: var(--bg-main);
      color: #cbd5e1;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--border-card);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: rgba(0, 210, 255, 0.4);
      box-shadow: 0 0 25px var(--glow-blue);
      transform: translateY(-2px);
    }
    .glow-btn-primary {
      background: linear-gradient(135deg, #2563eb 0%, #00d2ff 100%);
      box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
      transition: all 0.3s ease;
    }
    .glow-btn-primary:hover {
      box-shadow: 0 0 28px rgba(0, 210, 255, 0.65);
      transform: scale(1.02);
    }
    .glow-btn-secondary {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.18);
      transition: all 0.25s ease;
    }
    .glow-btn-secondary:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(255, 255, 255, 0.35);
      color: #ffffff;
    }