/* roulang page: index */
:root {
      --bg-main: #0a0f1d;
      --bg-sub: #0f172a;
      --border-glow: rgba(56, 189, 248, 0.2);
      --font-code: "JetBrains Mono", Consolas, Monaco, monospace;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-main);
      color: #cbd5e1;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
    }
    .code-font {
      font-family: var(--font-code);
    }
    .glass-card {
      background: rgba(15, 23, 42, 0.75);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid rgba(56, 189, 248, 0.15);
      transition: all 0.3s ease;
    }
    .glass-card:hover {
      border-color: rgba(56, 189, 248, 0.5);
      box-shadow: 0 0 25px rgba(56, 189, 248, 0.18);
      transform: translateY(-2px);
    }
    .glow-btn {
      background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
    }
    .glow-btn:hover {
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.6);
      transform: translateY(-1px);
    }
    .status-pulse {
      animation: pulseGlow 2s infinite;
    }
    @keyframes pulseGlow {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.15); }
    }
    .terminal-scroll::-webkit-scrollbar {
      width: 4px;
    }
    .terminal-scroll::-webkit-scrollbar-thumb {
      background: #334155;
      border-radius: 2px;
    }