/* roulang page: index */
:root {
      --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      --brand-primary: #4F46E5;
      --brand-secondary: #6366F1;
      --accent-color: #F59E0B;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --bg-light: #F8FAFC;
      --border-subtle: #E2E8F0;
    }

    body {
      font-family: var(--font-stack);
      color: var(--text-body);
      background-color: var(--bg-light);
      line-height: 1.75;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    .glass-nav {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    }

    .badge-gradient {
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.08) 0%, rgba(99, 102, 241, 0.12) 100%);
      border: 1px solid rgba(99, 102, 241, 0.25);
    }

    .card-hover-fx {
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .card-hover-fx:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 30px -10px rgba(79, 70, 229, 0.12);
      border-color: rgba(99, 102, 241, 0.4);
    }

    .timeline-dot::before {
      content: '';
      position: absolute;
      left: -9px;
      top: 6px;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: #4F46E5;
      border: 4px solid #EEF2FF;
    }