/* roulang page: index */
:root {
      --brand-dark: #0F3E6D;
      --brand-blue: #1D70B8;
      --brand-light: #EBF3FA;
      --bg-slate: #F8FAFC;
      --text-main: #1E293B;
      --text-muted: #475569;
      --border-color: #E2E8F0;
      --shadow-sm: 0 4px 20px -2px rgba(15, 62, 109, 0.05);
      --shadow-hover: 0 12px 28px -4px rgba(15, 62, 109, 0.12);
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--bg-slate);
      color: var(--text-main);
      overflow-x: hidden;
      line-height: 1.7;
    }
    .custom-card {
      background: #FFFFFF;
      border: 1px solid #EEF2F6;
      box-shadow: var(--shadow-sm);
      transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: #D3E2F2;
    }
    .hero-bg {
      background-image: linear-gradient(rgba(15, 62, 109, 0.88), rgba(15, 62, 109, 0.94)), url('/assets/images/24c9bfa14609b635.webp');
      background-size: cover;
      background-position: center;
    }
    .banner-dark {
      background-image: linear-gradient(rgba(15, 62, 109, 0.96), rgba(10, 42, 74, 0.98)), url('/assets/images/daf183f89bd67c55.png');
      background-size: cover;
      background-position: center;
    }