:root{color-scheme:light;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5}body{margin:0;padding:2rem;color:#111827;background:#f9fafb}main{max-width:48rem}code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}