/* roulang page: index */
:root {
      --primary: #4F46E5;
      --primary-dark: #4338CA;
      --signal-green: #10B981;
      --signal-cyan: #06B6D4;
      --bg-slate: #0F172A;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-body);
      background-color: #FFFFFF;
      line-height: 1.75;
    }
    h1, h2, h3, h4, h5, h6 {
      color: var(--text-main);
      line-height: 1.35;
      font-weight: 700;
    }
    .custom-container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1rem;
      padding-right: 1rem;
    }
    @media (min-width: 768px) {
      .custom-container {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }
    .hero-stat-card {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(226, 232, 240, 0.9);
      box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .hero-stat-card:hover {
      transform: translateY(-2px);
      box-shadow: 0 20px 25px -5px rgba(79, 70, 229, 0.1);
    }
    .feature-card {
      border: 1px solid rgba(226, 232, 240, 0.9);
      transition: all 0.25s ease-in-out;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      border-color: rgba(99, 102, 241, 0.4);
      box-shadow: 0 12px 24px -4px rgba(15, 23, 42, 0.08);
    }
    .badge-signal {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.8125rem;
      font-weight: 600;
    }
    .dot-live {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #10B981;
      box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25);
    }
    .bg-dark-section {
      background-color: #0F172A;
      color: #F8FAFC;
    }