:root {
      --max-width: 42rem;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont,
                   "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
      line-height: 1.7;
      margin: 0;
      padding: 1.5rem 1rem;
      background: #fff;
      color: #111;
    }

    main {
      max-width: var(--max-width);
      margin: auto;
    }

    h1 {
      font-size: 1.8rem;
      margin-bottom: 1rem;
      line-height: 1.3;
    }

    p {
      margin: 0 0 1rem;
    }

    /* 🖼️ 圖片區塊 */
    figure {
      margin: 1.5rem 0;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: 4px;
    }

    figcaption {
      font-size: 0.85rem;
      color: #555;
      margin-top: 0.5rem;
    }

    /* 📱 手機 */
    @media (max-width: 480px) {
      body {
        font-size: 0.95rem;
      }

      h1 {
        font-size: 1.5rem;
      }
    }

    /* 🖥️ 桌機 */
    @media (min-width: 1024px) {
      body {
        font-size: 1.05rem;
      }
    }