/* roulang page: index */
:root {
      --bg-dark: #0D1117;
      --bg-card: #161B22;
      --bg-panel: #1F242C;
      --border-color: #30363D;
      --cyan-main: #00F2FE;
      --cyan-glow: rgba(0, 242, 254, 0.25);
      --amber-accent: #E6A23C;
      --text-main: #F0F6FC;
      --text-muted: #8B949E;
    }
    html {
      scroll-behavior: smooth;
      font-family: Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", sans-serif;
      background-color: var(--bg-dark);
      color: var(--text-main);
    }
    .custom-scroll::-webkit-scrollbar {
      width: 6px;
    }
    .custom-scroll::-webkit-scrollbar-track {
      background: #0D1117;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: #30363D;
      border-radius: 3px;
    }
    .tech-card {
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .tech-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 10px 25px -5px rgba(0, 242, 254, 0.15);
      border-color: rgba(0, 242, 254, 0.4);
    }
    .badge-cyan {
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid rgba(0, 242, 254, 0.3);
      color: #00F2FE;
    }
    .badge-amber {
      background: rgba(230, 162, 60, 0.1);
      border: 1px solid rgba(230, 162, 60, 0.3);
      color: #E6A23C;
    }