/* roulang page: index */
:root {
      --primary-color: #1A56DB;
      --primary-dark: #0E3DA6;
      --secondary-cyan: #0EA5E9;
      --bg-light: #F8FAFC;
      --bg-dark: #0F172A;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-soft: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #ffffff;
      line-height: 1.65;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.02);
    }
    .custom-shadow-hover:hover {
      box-shadow: 0 12px 28px -4px rgba(26, 86, 219, 0.12), 0 4px 10px -2px rgba(15, 23, 42, 0.04);
      transform: translateY(-3px);
    }
    .hero-bg {
      background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.94) 0%, rgba(240, 246, 255, 0.92) 100%), url('/assets/images/a7e9aa0519705fbc.webp');
      background-size: cover;
      background-position: center;
    }