/* roulang page: index */
:root {
      --bg-dark: #0B0F17;
      --bg-deep: #0F172A;
      --primary-cyan: #06B6D4;
      --primary-emerald: #10B981;
      --accent-blue: #2563EB;
      --text-main: #FFFFFF;
      --text-secondary: #94A3B8;
      --card-border: rgba(148, 163, 184, 0.15);
      --radius-large: 1.5rem;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-secondary);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }
    .text-gradient {
      background: linear-gradient(135deg, #06B6D4 0%, #10B981 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .btn-gradient {
      background: linear-gradient(135deg, #06B6D4 0%, #10B981 100%);
      transition: all 0.3s ease;
    }
    .btn-gradient:hover {
      opacity: 0.92;
      box-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.4);
      transform: translateY(-2px);
    }
    .glass-card {
      background: rgba(19, 29, 49, 0.7);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-large);
      transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
    }
    .glass-card:hover {
      transform: translateY(-4px);
      border-color: rgba(6, 182, 212, 0.4);
      box-shadow: 0 20px 30px -10px rgba(0, 0, 0, 0.5), 0 0 20px -2px rgba(6, 182, 212, 0.15);
    }
    .custom-scroll::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: rgba(6, 182, 212, 0.3);
      border-radius: 4px;
    }