@media print {
  /* 隐藏元素 */
  .l_left,
  .l_right,
  .top.bread-nav.footnote,
  div#read-next,
  div#post-ai,
  div#related-posts,
  div#comments,
  section#license,
  section#share,
  section#references,
  #link-icon,
  footer{
    display: none !important;
  }

  @page{
    @top-left { content: none !important; }
  }
  .md-text psw {
    color: unset;
    background: unset;
    border: 3px dashed var(--block-border);
  }
  /* 隐藏锚点 */
  .markdownIt-Anchor {
    display: none; /* 隐藏原始链接内容 */
  }
  /* 修改背景和边框 */
  .article.banner {
    background: none;
    border-bottom: 1px dashed var(--block-border);
  }

  /* 调整边框圆角和内边距 */
  .banner,
  .banner.top {
    border-radius: 0;
  }

  .banner .bottom,
  table {
    padding: 0rem;
  }

  /* 取消grid布局 */
  #start {
    display: unset;
  }
  /* 调整字的上下边距 */
  p {
    margin: 0 !important;
  }
  /* 调整标题的上外边距 */
  h1,h2,h3,h4,h5, h6 {
    margin: 0 !important;
  }

  /* 限制图片高度 */
  img {
    max-height: 100vh;
  }
  .md-text {
    max-width: 100%;
    line-height:unset;
  }
  /* 修改link */
  a:not([href^='#'])::after {
    content: ' (' attr(href) ')';
    font-size: 80%;
    color: var(--color-fg-muted);
  }

  /* 修改公式间距 */
  /* 针对行内公式设置垂直间距 */
  .math.inline, .katex-inline {
    margin-top: 5px !important;
    margin-bottom: 5px !important;
    vertical-align: middle !important;
  }
  
  /* 针对块级公式设置上下间距 */
  .math.display, .katex-display {
    margin: 0px !important; /* 上下各1em间距 */
    padding: 0px !important;
    page-break-inside: avoid !important; /* 防止公式跨页分割 */
  }

  /* 防止公式被压缩 */
  .katex {
    font-size: inherit !important;
    line-height: 1.2 !important;
  }

  /* 公式包裹容器 - 添加额外间距 
  .equation, [data-equation] {
    margin-top: 0em !important;
    margin-bottom: 0em !important;
  }
  */


/* 通过伪元素+固定定位实现防移除水印 */

/*
  body {
    position: relative;
  }
  body::after {
    content: "杨      宁      之";
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex !important;
    justify-content: center;
    align-items: center;
    font-size: 100px;
    color:rgba(0,0,0,0.1);
    transform: rotate(-30deg);
    pointer-events: none;
    z-index: 9999;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.2);
  }
  */
}