/* roulang page: index */
:root {
      --primary: #0284C7;
      --primary-dark: #0F172A;
      --accent: #10B981;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --bg-base: #F8FAFC;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-base);
      line-height: 1.7;
      letter-spacing: -0.01em;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 10px 15px -5px rgba(0,0,0,0.04);
    }
    .hero-bg {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(11, 15, 25, 0.92)), url('/assets/images/2c62953b4c12fe4c.webp') center/cover no-repeat;
    }
    .tech-bg {
      background: linear-gradient(180deg, #0B0F19 0%, #0F172A 100%);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details summary {
      list-style: none;
    }
    .tab-active {
      border-color: #0284C7;
      color: #0284C7;
      background-color: #F0F9FF;
    }