/* roulang page: index */
:root {
      --primary-color: #1a56db;
      --accent-color: #0284c7;
      --growth-color: #0e9f6e;
      --bg-light: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --card-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--bg-light);
      color: var(--text-main);
      overflow-x: hidden;
    }
    .custom-card-shadow {
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card-shadow:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-4px);
    }
    .hero-bg-layer {
      background: radial-gradient(circle at 85% 20%, rgba(26, 86, 219, 0.08) 0%, transparent 60%),
                  radial-gradient(circle at 15% 80%, rgba(2, 132, 199, 0.06) 0%, transparent 50%),
                  #ffffff;
    }