/* roulang page: index */
:root {
      --primary-titanium: #1A232A;
      --accent-orange: #FF7A00;
      --accent-blue: #0066FF;
      --bg-dark: #0F141C;
      --bg-light: #F4F6F9;
      --text-main: #0D141E;
      --text-muted: #3A4759;
      --border-line: rgba(15, 23, 42, 0.08);
    }
    html {
      scroll-padding-top: 104px;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: #3A4759;
      background-color: #F4F6F9;
      -webkit-font-smoothing: antialiased;
      line-height: 1.7;
    }
    h1, h2, h3, h4, h5, h6 {
      color: #0D141E;
      line-height: 1.25;
      letter-spacing: -0.01em;
    }
    .industrial-grid {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    }
    .industrial-card {
      transition: all 0.2s ease-out;
      border: 1px solid rgba(15, 23, 42, 0.08);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    }
    .industrial-card:hover {
      transform: translateY(-3px);
      border-color: #FF7A00;
      box-shadow: 0 10px 24px -6px rgba(255, 122, 0, 0.15);
    }
    .btn-action {
      transition: all 0.18s ease-in-out;
    }
    .btn-action:hover {
      transform: translateY(-1px);
      box-shadow: 0 4px 14px rgba(255, 122, 0, 0.35);
    }