/* roulang page: index */
:root {
      --primary: #0F766E;
      --accent: #F97316;
      --bg-light: #FAFAF9;
      --slate-text: #334155;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--bg-light);
      color: var(--slate-text);
      overflow-x: hidden;
    }
    details > summary::-webkit-details-marker {
      display: none;
    }