:root { color-scheme: light dark; }
body {
  margin: 0;
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: Canvas;
  color: CanvasText;
}
main { max-width: 42rem; margin: 0 auto; padding: 3rem 1.25rem 4rem; }
h1 { font-size: 2.2rem; line-height: 1.15; margin: 0 0 1rem; }
h2 { margin-top: 2.4rem; font-size: 1.35rem; }
h3 { margin-top: 1.6rem; font-size: 1.1rem; }
blockquote { margin: 0 0 1.2rem; padding-left: 1rem; border-left: 3px solid #8fd3ff; font-size: 1.1rem; }
a { color: LinkText; }