.article-sources {
  margin: 32px 0;
  padding: 24px 0;
  border-top: 1px solid #e3e3e3;
  border-bottom: 1px solid #e3e3e3;
}

.article-sources > .references-heading,
.reading-shell .article-sources > .references-heading,
.profile-biography .article-sources > .references-heading {
  margin: 0 0 18px;
  color: #333;
  font: 400 18px/1.5 Arial, Helvetica, sans-serif;
  letter-spacing: 0;
}

.article-sources > ol {
  margin: 0;
}

.article-sources .article-sources-more {
  margin: 12px 0 0;
  padding: 0;
  border: 0;
}

.article-sources-more > summary {
  display: inline-block;
  min-height: 44px;
  padding: 10px 0;
  color: #494949;
  font: 400 13px/1.7 Arial, Helvetica, sans-serif;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  list-style: none;
  cursor: pointer;
}

.article-sources-more > summary::after,
.article-sources-more > summary::-webkit-details-marker {
  display: none;
}

.article-sources-more > summary:hover {
  color: #222;
}

.article-sources-more .references-show-less,
.article-sources-more[open] .references-show-more {
  display: none;
}

.article-sources-more[open] .references-show-less {
  display: inline;
}

.article-sources-more > ol {
  margin-top: 8px;
}

.article-sources li:target {
  outline-color: #8c8c8c;
}

@media print {
  .article-sources-more > summary {
    display: none;
  }

  .article-sources-more::details-content {
    display: block;
    content-visibility: visible;
  }

  .article-sources-more:not([open]) > ol {
    display: block;
  }
}