/* roulang page: index */
:root {
      --primary: #1E40AF;
      --primary-hover: #1D4ED8;
      --accent: #0EA5E9;
      --accent-green: #059669;
      --bg-page: #F8FAFC;
      --surface-white: #FFFFFF;
      --surface-dark: #0F172A;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.02);
      --shadow-hover: 0 20px 25px -5px rgba(30, 64, 175, 0.08), 0 8px 10px -6px rgba(30, 64, 175, 0.04);
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-page);
      color: var(--text-main);
      font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
      line-height: 1.6;
    }
    .custom-card-shadow {
      box-shadow: var(--shadow-card);
      transition: all 0.25s ease-in-out;
    }
    .custom-card-shadow:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .ticket-edge-left {
      position: relative;
    }
    .ticket-edge-left::before {
      content: '';
      position: absolute;
      left: -12px;
      top: 50%;
      transform: translateY(-50%);
      width: 24px;
      height: 24px;
      background-color: var(--bg-page);
      border-radius: 50%;
      box-shadow: inset -2px 0 3px rgba(0,0,0,0.06);
    }
    .hero-bg {
      background-image: linear-gradient(rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.92)), url('/assets/images/8ce2014b1af63742.webp');
      background-size: cover;
      background-position: center;
    }
    .architecture-bg {
      background-image: linear-gradient(rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.96)), url('/assets/images/9131308d95328057.png');
      background-size: cover;
      background-position: center;
    }