/* roulang page: index */
:root {
      --primary: #1e40af;
      --accent: #3b82f6;
      --text-main: #0f172a;
      --text-muted: #475569;
      --bg-light: #f8fafc;
      --card-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #ffffff;
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    .hero-angled {
      clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
    }
    @media (max-width: 768px) {
      .hero-angled {
        clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
      }
    }
    .custom-card {
      box-shadow: var(--card-shadow);
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -4px rgba(30, 64, 175, 0.12);
      border-color: #bfdbfe;
    }