/* roulang page: index */
:root {
      --primary: #0F2942;
      --secondary: #1E4E79;
      --accent: #0D9488;
      --amber: #D97706;
      --bg-slate: #F8FAFC;
      --text-dark: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
    }
    body {
      color: #334155;
      background-color: #FFFFFF;
      overflow-x: hidden;
    }
    .hero-bg {
      background: linear-gradient(135deg, rgba(15, 41, 66, 0.95), rgba(10, 25, 47, 0.96)), url('/assets/images/c0108d54a3dc2db4.webp') center/cover no-repeat;
    }
    .custom-card {
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 30px -10px rgba(15, 41, 66, 0.1);
    }
    .badge-soft {
      background: rgba(13, 148, 136, 0.1);
      color: #0D9488;
      border: 1px solid rgba(13, 148, 136, 0.25);
    }
    .timeline-line::before {
      content: '';
      position: absolute;
      top: 24px;
      left: 0;
      right: 0;
      height: 2px;
      background: #E2E8F0;
      z-index: 1;
    }