/* roulang page: index */
:root {
      --primary: #00ff88;
      --primary-hover: #10e79d;
      --bg-dark: #0b0d11;
      --bg-surface: #13171f;
      --border-color: rgba(255, 255, 255, 0.08);
      --text-muted: #94a3b8;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-dark);
      color: #f8fafc;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .custom-ring {
      box-shadow: 0 0 35px -5px rgba(0, 255, 136, 0.3);
    }
    .glass-nav {
      background: rgba(11, 13, 17, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
    }