/* roulang page: index */
:root {
      --primary: #0F2537;
      --accent: #FF6B00;
      --teal: #00A896;
      --bg-light: #F8FAFC;
    }
    body {
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
      color: #1E293B;
      background-color: #F8FAFC;
      line-height: 1.65;
    }
    .custom-scroll-smooth {
      scroll-behavior: smooth;
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(15, 37, 55, 0.94) 0%, rgba(11, 25, 38, 0.88) 100%);
    }