@media (max-width: 760px) {
  .timeline article {
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .timeline article > div:last-child::after {
    content: "点击查看全部";
    display: inline-block;
    margin-top: 7px;
    color: #a81219;
    font-size: 10px;
    font-weight: 700;
  }

  .timeline article.mail-expanded > div:last-child::after {
    content: "点击收起";
  }

  .timeline article.mail-expanded p {
    display: block;
    overflow: visible;
    -webkit-line-clamp: unset;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
  }

  .timeline article:focus-visible {
    outline: 2px solid #a81219;
    outline-offset: 5px;
    border-radius: 6px;
  }
}