/* roulang page: index */
:root {
      --primary: #1D63FF;
      --primary-dark: #0F2F7A;
      --bg-light: #F8FAFC;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border: #E2E8F0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Noto Sans", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      overflow-x: hidden;
    }
    .hero-bg {
      background: radial-gradient(circle at 80% 20%, rgba(29, 99, 255, 0.08) 0%, transparent 50%),
                  radial-gradient(circle at 10% 80%, rgba(0, 210, 211, 0.06) 0%, transparent 40%),
                  #0A1633;
    }
    .text-gradient {
      background: linear-gradient(135deg, #FFFFFF 20%, #DBEAFF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .glass-card {
      background: rgba(255, 255, 255, 0.04);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.12);
    }
    .card-transition {
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }