/* roulang page: index */
:root {
      --primary: #FF5A1F;
      --primary-dark: #0F172A;
      --accent: #00D2A0;
      --bg-light: #F8FAFC;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: #FFFFFF;
      color: #1E293B;
      font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Inter', sans-serif;
      line-height: 1.65;
    }
    .custom-scroll::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-track {
      background: #F1F5F9;
      border-radius: 999px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: #CBD5E1;
      border-radius: 999px;
    }
    .custom-scroll::-webkit-scrollbar-thumb:hover {
      background: #FF5A1F;
    }
    .glass-nav {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }