/* roulang page: index */
:root {
      --bg-deep: #080D1A;
      --bg-navy: #0E1838;
      --brand-cyan: #00E5FF;
      --brand-blue: #2563EB;
      --brand-orange: #FF6B35;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
    }
    body {
      background-color: var(--bg-deep);
      background-image: radial-gradient(circle at 50% 10%, #15224c 0%, #080D1A 60%);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    }
    .glass-card {
      background: rgba(15, 23, 42, 0.75);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid rgba(0, 229, 255, 0.16);
      box-shadow: inset 0 1px 1px 0 rgba(255, 255, 255, 0.08), 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    }
    .glass-card:hover {
      border-color: rgba(0, 229, 255, 0.35);
    }
    .btn-glow {
      box-shadow: 0 0 24px rgba(0, 229, 255, 0.35);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-glow:hover {
      box-shadow: 0 0 32px rgba(0, 229, 255, 0.55);
      transform: translateY(-2px);
    }
    .btn-orange-glow {
      box-shadow: 0 0 24px rgba(255, 107, 53, 0.35);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-orange-glow:hover {
      box-shadow: 0 0 32px rgba(255, 107, 53, 0.6);
      transform: translateY(-2px);
    }
    .clip-slant {
      clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
    }
    .text-glow {
      text-shadow: 0 0 18px rgba(0, 229, 255, 0.35);
    }