/* roulang page: index */
:root {
      --primary: #00E575;
      --primary-hover: #00C865;
      --secondary: #FF5C00;
      --bg-dark: #0A0D14;
      --bg-surface: #121824;
      --bg-card: #182030;
      --border-color: #222E44;
      --text-main: #F4F6F8;
      --text-muted: #8C9BAE;
    }
    
    html {
      scroll-behavior: smooth;
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    /* Custom Scrollbar */
    ::-webkit-scrollbar {
      width: 8px;
      height: 8px;
    }
    ::-webkit-scrollbar-track {
      background: #0A0D14;
    }
    ::-webkit-scrollbar-thumb {
      background: #222E44;
      border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
      background: #00E575;
    }

    .tech-border-glow {
      border: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }
    @media (min-width: 1024px) {
      .tech-border-glow:hover {
        border-color: rgba(0, 229, 117, 0.4);
        box-shadow: 0 0 20px rgba(0, 229, 117, 0.08);
      }
    }

    .glass-nav {
      background: rgba(10, 13, 20, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }