:root{font-family:system-ui,-apple-system,sans-serif;line-height:1.5;color:#1a1a1a;background:#f5f5f5}body{margin:0}.app{max-width:32rem;margin:4rem auto;padding:2rem;background:#fff;border-radius:8px;box-shadow:0 1px 3px #0000001a}.muted{color:#666;font-size:.875rem}