/* roulang page: index */
:root {
      --primary: #0F4C81;
      --primary-dark: #0B3A63;
      --accent: #2563EB;
      --accent-cyan: #0284C7;
      --bg-light: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: #FFFFFF;
      color: var(--text-main);
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 76, 129, 0.08);
    }
    .custom-shadow-hover {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-shadow-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.08);
    }
    .hero-banner-bg {
      background-image: linear-gradient(135deg, rgba(15, 76, 129, 0.94) 0%, rgba(11, 19, 43, 0.96) 100%), url('/assets/images/55ce01e988864462.png');
      background-size: cover;
      background-position: center;
    }
    .blueprint-bg {
      background-image: linear-gradient(180deg, rgba(11, 19, 43, 0.98) 0%, rgba(15, 30, 66, 0.98) 100%), url('/assets/images/d334e3f61a8e39b9.jpg');
      background-size: cover;
      background-position: center;
    }