body {
        margin: 0;
        padding: 0;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        background-color: #f9f9f9;
        color: #333;
      }

      header.title {
        background-color: #fff;
        color: white;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 2px;
        box-shadow: 0 2px 3px rgba(0, 0, 0, 0.05);
      }

header.title a.historyback {background-color: red;    padding: 5px;}



     

    html[lang]  header.title a.historyback {
           background-color: #36baf1;
        padding: 5px;
      }

      header.title img {
        vertical-align: middle;
      }

      section.faq {
        max-width: 800px;
        margin: 0 auto;
        padding-bottom: 64px;
      }

      section.faq h1 {
        text-align: center;
        font-size: 24px;
        font-weight: bold;
        margin: 24px 0;
        color: #222;
        margin-bottom: 16px;
      }

      .qa-pair {
        background: white;
        border-radius: 8px;
        padding: 16px;
        margin-bottom: 8px;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
      }

      .qa-pair .question {
        font-size: 16px;
        font-weight: bold;
        margin-bottom: 8px;
      }

      .qa-pair .answer {
        font-size: 16px;
        line-height: 1.6;
        color: #555;
      }

      .qa-pair .notice {
        font-size: 16px;
        line-height: 1.6;
        color: #555;
      }

      .qa-pair .notice p {
        margin: 8px 0;
      }



      section.feedback {
        background: #fff7f8;
        border-left: 4px solid #ff1744;
        padding: 16px 20px;
        margin: 16px auto;
        max-width: 800px;
        border-radius: 8px;
        font-size: 16px;
        color: #444;
      }

      section.feedback a {
        color: #ff1744;
        text-decoration: none;
        font-weight: 500;
      }

      .return-button {
        display: block;
        width: 140px;
        margin: 32px auto 0;
        padding: 12px;
        background: #ff1744;
        color: #fff;
        text-align: center;
        border: none;
        border-radius: 6px;
        font-size: 16px;
        cursor: pointer;
        transition: background 0.3s;
      }

      .return-button:hover {
        background: #d8133b;
      }

      #page_footer {
        position: fixed;
        bottom: 0;
        width: 100%;
        background: #fff;
        color: #666;
        min-height: 36px;
        text-align: center;
        z-index: 1000;
        box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.05);
        font-size: 13px;
        display: flex;
        align-items: center;
        justify-content: center;
      }

      #page_footer a {
        text-decoration: none;
        margin: 0 5px;
        color: #666;
      }

      @media screen and (orientation: portrait) {
        section.faq {
          padding: 12px;
        }

        section.faq h1 {
          font-size: 20px;
        }

        .qa-pair {
          padding: 14px;
        }

        .return-button {
          width: 100px;
          font-size: 14px;
          margin-bottom: 64px;
        }

        .beian {
          display: none;
        }
      }