/* roulang page: index */
:root {
      --brand-primary: #0284c7;
      --brand-hover: #0369a1;
      --brand-accent: #0ea5e9;
      --success-green: #059669;
      --dark-slate: #0f172a;
      --dark-navy: #1e293b;
      --bg-light: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #64748b;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-light);
      color: #334155;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -4px rgba(15, 23, 42, 0.06);
    }
    .hero-bg {
      background-image: linear-gradient(135deg, rgba(2, 132, 199, 0.94) 0%, rgba(15, 23, 42, 0.96) 100%), url('/assets/images/fe439911a56a9384.jpg');
      background-size: cover;
      background-position: center;
    }
    .hardware-bg {
      background-image: linear-gradient(180deg, rgba(248, 250, 252, 0.96) 0%, rgba(248, 250, 252, 0.98) 100%), url('/assets/images/7607c944fec6ee39.jpg');
      background-size: cover;
      background-position: center;
    }
    .tech-grid-pattern {
      background-image: radial-gradient(rgba(2, 132, 199, 0.15) 1px, transparent 1px);
      background-size: 24px 24px;
    }