/* roulang page: index */
:root {
      --bg-base: #0a0f1d;
      --bg-card: rgba(15, 23, 42, 0.75);
      --border-glow: rgba(56, 189, 248, 0.18);
      --border-highlight: rgba(56, 189, 248, 0.45);
      --primary: #2563eb;
      --accent: #38bdf8;
      --emerald: #10b981;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-glow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: var(--border-highlight);
      box-shadow: 0 0 25px rgba(37, 99, 235, 0.22);
      transform: translateY(-3px);
    }
    .btn-glow-primary {
      background: linear-gradient(135deg, #2563eb 0%, #0284c7 100%);
      box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
      transition: all 0.25s ease;
    }
    .btn-glow-primary:hover {
      box-shadow: 0 0 28px rgba(37, 99, 235, 0.65);
      transform: translateY(-2px);
    }
    .btn-glow-secondary {
      background: rgba(14, 23, 42, 0.85);
      border: 1px solid rgba(56, 189, 248, 0.4);
      transition: all 0.25s ease;
    }
    .btn-glow-secondary:hover {
      border-color: #38bdf8;
      background: rgba(30, 41, 59, 0.95);
      box-shadow: 0 0 16px rgba(56, 189, 248, 0.3);
    }
    .hero-glow-blob {
      position: absolute;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(37,99,235,0.18) 0%, rgba(2,132,199,0.05) 50%, transparent 70%);
      filter: blur(40px);
      pointer-events: none;
    }
    .code-console {
      background: rgba(8, 12, 22, 0.92);
      border: 1px solid rgba(56, 189, 248, 0.2);
      box-shadow: inset 0 0 20px rgba(0,0,0,0.6);
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }