/* roulang page: index */
:root {
      --bg-page: #FAFAFA;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --color-primary: #0D9488;
      --color-accent: #D97706;
      --border-line: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-page);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .grid-pattern {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(226, 232, 240, 0.45) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(226, 232, 240, 0.45) 1px, transparent 1px);
    }
    .dark-grid-pattern {
      background-size: 36px 36px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    }
    .card-hover {
      transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease, box-shadow 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      border-color: #0D9488;
      box-shadow: 0 12px 24px -10px rgba(13, 148, 136, 0.12);
    }