body {
  max-width: 40rem;
  margin: 3rem auto;
  padding: 0 1.25rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: #111;
  background: #fff;
}
h1 { font-weight: 500; font-size: 2rem; margin: 0 0 1.5rem; }
ul { list-style: none; padding: 0; margin: 0; }
li { margin: 0 0 1.5rem; }
li > a { font-size: 1.2rem; }
li p { margin: .2rem 0 0; }
.gh { margin-left: .5rem; font-size: .9rem; }
.gh a { color: #666; }
a { color: #8a3b12; }
/* External links open a new tab and carry a box-and-arrow mark. */
a[target="_blank"]::after {
  content: "";
  display: inline-block;
  width: .65em;
  height: .65em;
  margin-left: .25em;
  vertical-align: 0;
  background-color: currentColor;
  -webkit-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 12" fill="none" stroke="black" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round"><path d="M5 1.5H2a.5.5 0 0 0-.5.5v8a.5.5 0 0 0 .5.5h8a.5.5 0 0 0 .5-.5V7"/><path d="M7 1.5h3.5V5M10.5 1.5 5.5 6.5"/></svg>') no-repeat center / contain;
  mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 12" fill="none" stroke="black" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round"><path d="M5 1.5H2a.5.5 0 0 0-.5.5v8a.5.5 0 0 0 .5.5h8a.5.5 0 0 0 .5-.5V7"/><path d="M7 1.5h3.5V5M10.5 1.5 5.5 6.5"/></svg>') no-repeat center / contain;
}

.draft { color: #a33; font-style: italic; }
footer { margin-top: 3rem; border-top: 1px solid #ddd; padding-top: 1rem; font-size: .9rem; }
@media (prefers-color-scheme: dark) {
  body { color: #ece6da; background: #171512; }
  a { color: #e0864f; }
  .gh a { color: #9d958a; }
  footer { border-color: #34302a; }
}