/* Mark external links as such. */
a.external::after,
a.autorefs-external::after {
  /* https://primer.style/octicons/arrow-up-right-24 */
  mask-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M18.25 15.5a.75.75 0 00.75-.75v-9a.75.75 0 00-.75-.75h-9a.75.75 0 000 1.5h7.19L6.22 16.72a.75.75 0 101.06 1.06L17.5 7.56v7.19c0 .414.336.75.75.75z"></path></svg>');
  -webkit-mask-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M18.25 15.5a.75.75 0 00.75-.75v-9a.75.75 0 00-.75-.75h-9a.75.75 0 000 1.5h7.19L6.22 16.72a.75.75 0 101.06 1.06L17.5 7.56v7.19c0 .414.336.75.75.75z"></path></svg>');
  content: ' ';

  display: inline-block;
  vertical-align: middle;
  position: relative;

  height: 1em;
  width: 1em;
  background-color: currentColor;
}

a.external:hover::after,
a.autorefs-external:hover::after {
  background-color: var(--md-accent-fg-color);
}
