body {
  font-family:
    system-ui,
    -apple-system,
    'Segoe UI',
    Roboto,
    sans-serif;
  line-height: 1.6;
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 16px;
  color: #1c1b1f;
  background: #fff;
}
h1 {
  font-size: 1.6rem;
}
h2 {
  font-size: 1.15rem;
  margin-top: 1.6em;
}
hr {
  margin: 2.5em 0;
  border: 0;
  border-top: 1px solid #ccc;
}
a {
  color: #0b57d0;
  word-break: break-all;
}
@media (prefers-color-scheme: dark) {
  body {
    color: #e6e1e5;
    background: #1c1b1f;
  }
  a {
    color: #a8c7fa;
  }
  hr {
    border-color: #444;
  }
}