/* roulang page: index */
:root {
      --primary: #00D2A0;
      --primary-hover: #00B88C;
      --secondary: #6366F1;
      --bg-dark: #0B0F19;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-subtle: #E2E8F0;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      color: var(--text-main);
      background-color: #FFFFFF;
      -webkit-font-smoothing: antialiased;
    }
    .hero-stack-card {
      transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .hero-stack-card:hover {
      transform: translateY(-4px) scale(1.01);
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(11, 15, 25, 0.06);
    }
    .glow-border {
      border: 1px solid rgba(0, 210, 160, 0.25);
    }
    details summary::-webkit-details-marker {
      display: none;
    }