/* roulang page: index */
:root {
      --primary: #0D3B3F;
      --primary-light: #164E63;
      --accent: #10B981;
      --accent-hover: #059669;
      --bg-light: #F8FAFC;
      --bg-alt: #F1F5F9;
      --dark-card: #0F172A;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-weak: #64748B;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.65;
    }
    .custom-section-title {
      position: relative;
      display: inline-block;
    }
    .custom-section-title::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 0;
      width: 48px;
      height: 3px;
      background-color: var(--accent);
      border-radius: 2px;
    }
    .card-hover-fx {
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover-fx:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -10px rgba(13, 59, 63, 0.12);
    }