:root {
  color-scheme: light dark;
}
body {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  max-width: 72ch;
  margin: 2rem auto;
  padding: 0 1rem;
  line-height: 1.5;
}
img,
svg {
  max-width: 100%;
}
/* code blocks + ascii diagrams: super-light, no syntax colors. */
pre {
  background: color-mix(in srgb, currentColor 5%, transparent);
  padding: 0.7rem 0.9rem;
  overflow-x: auto;
  font-size: 0.8em;
  line-height: 1.45;
  border-radius: 4px;
}