/* roulang page: index */
:root {
      --primary: #0284C7;
      --secondary: #8B5CF6;
      --accent: #F59E0B;
      --dark: #0F172A;
      --light-bg: #F8FAFC;
    }
    body {
      color: #334155;
      background-color: #FFFFFF;
      -webkit-font-smoothing: antialiased;
    }
    .hero-stack-card {
      transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .hero-stack-card:hover {
      transform: translateY(-6px);
    }

body{font-family:"Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.7;color:#1f2937;background:#f7f9fc}
  header,footer{background:#0f172a;color:#fff} header a,footer a{color:inherit;text-decoration:none}
  main section{padding:64px 0} .container{max-width:1180px}
  .hero,.site-hero{background:linear-gradient(135deg,#0f172a,#1d4ed8);color:#fff}
  .card,.feature-card,.service-card,.category-card{border:1px solid rgba(15,23,42,.08);box-shadow:0 12px 32px rgba(15,23,42,.08);border-radius:16px}
  .btn,.button,a[class*="btn"]{border-radius:999px;font-weight:700}
  img{max-width:100%;height:auto} @media(max-width:768px){main section{padding:42px 0} h1{font-size:2rem}}