:root { color-scheme: light dark; }
body { margin: 0; font: 17px/1.5 -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif; background: Canvas; color: CanvasText; }
main { max-width: 680px; margin: 0 auto; padding: 48px 24px 64px; }
h1 { font-size: 2rem; margin: 0 0 4px; }
h2 { font-size: 1.25rem; margin-top: 2em; }
.tagline { color: GrayText; margin-top: 0; }
a { color: #e4572e; }
ul { padding-left: 1.2em; }
li { margin: 0.4em 0; }

pre { background: #f3f3f5; padding: 0.8rem 1rem; border-radius: 8px; overflow-x: auto; font-size: 0.9rem; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
ol li { margin-bottom: 0.5rem; }