:root {
  color-scheme: dark;
  font-family: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 16px;
  line-height: 1.75;
  color: #f5f5f5;
  background: #000;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #000;
}

main,
footer {
  width: min(100% - 2rem, 44rem);
  margin-inline: auto;
}

main {
  padding-block: 4rem 2rem;
}

header,
section {
  margin-block-end: 4rem;
}

h1,
h2,
h3,
p,
dl {
  margin-block-start: 0;
}

h1,
h2,
h3 {
  font: inherit;
  font-weight: 700;
}

h1,
h2 {
  margin-block-end: 1.75rem;
}

h3 {
  margin-block-start: 2.5rem;
  margin-block-end: 0.75rem;
}

header p,
.note,
footer {
  color: #aaa;
}

dl {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr);
  gap: 0.5rem 1rem;
}

dt,
dd {
  margin: 0;
}

a {
  color: #fff;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover,
a:focus-visible {
  color: #000;
  background: #fff;
  outline: 0.2rem solid #fff;
}

hr {
  border: 0;
  border-block-start: 1px solid #555;
  margin-block: 0 4rem;
}

.back {
  margin-block-start: 4rem;
}

footer {
  padding-block: 0 3rem;
  font-size: 0.875rem;
}

@media (max-width: 32rem) {
  main {
    padding-block-start: 2rem;
  }

  header,
  section {
    margin-block-end: 3rem;
  }

  dl {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }

  dd + dt {
    margin-block-start: 0.75rem;
  }
}