/* roulang page: index */
:root {
      --primary: #084c61;
      --primary-dark: #07161f;
      --accent: #00a896;
      --accent-hover: #059669;
      --bg-slate: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-subtle: #e2e8f0;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    .shadow-soft {
      box-shadow: 0 4px 20px -2px rgba(8, 76, 97, 0.06);
    }
    .shadow-hover {
      transition: all 0.25s ease-in-out;
    }
    .shadow-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -4px rgba(8, 76, 97, 0.12);
    }
    .glass-nav {
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(10px);
    }
    .code-accent {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }