[lang="zh-hans"] {
    font-family: "PingFang SC", "Noto Sans CJK SC", "Heiti SC", "DengXian",
      "Microsoft YaHei", Helvetica, Segoe UI, Arial, sans-serif;
  }

  .rfc2119-zh {
    font-style: normal;
    text-emphasis: dot;
    -webkit-text-emphasis: dot;
    text-emphasis-position: under right;
    -webkit-text-emphasis-position: under right;
  }

  h2 {
    margin-top: 3em;
    margin-bottom: 0em;
  }

  :is(.head, #abstract, #sotd) h2 {
    margin-top: 0;
  }

  h3 {
    margin-top: 3em;
  }

  h4 {
    margin-top: 2em;
    font-size: 100%;
    font-weight: normal;
    color: #005a9c;
  }

  h5 {
    font-style: inherit !important;
  }

  .leadin {
    font-weight: bold;
  }

  ins {
    background-color: #99ff99;
    text-decoration: none;
  }

  del {
    display: inline;
    color: silver;
  }

  figure {
    margin-bottom: 2em;
    text-align: center;
    vertical-align: top;
  }

  figure img {
    vertical-align: middle;
  }

  figcaption {
    text-align: center;
    margin: 0.5em 2em;
    font-style: italic;
    font-size: 90%;
  }

  .figno:after {
    content: ":\00A0  ";
  }

  code,
  samp,
  kbd {
    font-family: Consolas, "Andale Mono", "Lucida Console",
      "Lucida Sans Typewriter", Monaco, "Courier New", monospace;
    font-size: 100%;
  }

  code {
    color: #a52a2a;
  }

  .uname {
    text-transform: uppercase;
    font-size: 85%;
    letter-spacing: 0.03em;
  }

  #langSwitch {
    position: fixed;
    top: -14px;
    z-index: 10000;
    top: 100px;
    right: 10px;
    width: 5em;
    text-align: right;
  }
  #langSwitch button {
    background: #fff none repeat scroll 0% 0%;
    border: 1px solid #ccc;
    border-radius: 5px;
  }
  #langSwitch button:lang(zh-hans) {
    /* background-color: #fbc481; */
  }

  .translateme,
  .retranslateme {
    background-color: #f3f3c3;
    background-clip: content-box;
  }
  .checkme {
    background-color: #bbeffc;
    background-clip: content-box;
  }

  .checkme::before {
    content: " Check this translation: ";
    color: coral;
  }

  .translateme::before {
    content: " Translate this: ";
    color: coral;
  }

  .retranslateme::before {
    content: " (Re)translate this: ";
    color: coral;
  }

  .is-multilingual [its-locale-filter-list^="zh"] {
    padding-left: 0.4em;
    border-left: 3px solid;
  }
  .is-multilingual [its-locale-filter-list="zh-hans"] {
    border-color: rgba(248, 138, 5, 0.5);
  }

  .is-multilingual h2[its-locale-filter-list^="zh"],
  .is-multilingual h3[its-locale-filter-list^="zh"],
  .is-multilingual h4[its-locale-filter-list^="zh"],
  .is-multilingual h5[its-locale-filter-list^="zh"],
  .is-multilingual h6[its-locale-filter-list^="zh"],
  .is-multilingual p[its-locale-filter-list^="zh"],
  .is-multilingual ol[its-locale-filter-list^="zh"],
  .is-multilingual ul[its-locale-filter-list^="zh"] {
    margin-left: calc(-0.4em - 2px);
  }

  .is-multilingual .secno ~ span[its-locale-filter-list^="zh"] {
    display: inline-block;
    margin-left: 0.3em;
    padding-left: 0.3em;
  }

  .note {
    margin-left: -1em !important;
    padding-left: 1.5em !important;
  }

  .note h6 {
    margin-top: 1em;
    margin-bottom: 0;
    font-weight: bold;
  }