:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;color:#1e293b;background-color:#f8fafc}body{margin:0}.app{max-width:40rem;margin:2rem auto;padding:0 1rem}.app-meta{font-size:.875rem;color:#64748b}