*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,sans-serif;background-color:#fff;color:#1f2937;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}code{font-family:ui-monospace,SFMono-Regular,monospace;background-color:#f3f4f6;padding:2px 6px;border-radius:4px;font-size:13px}a{color:#2563eb;text-decoration:none}a:hover{text-decoration:underline}