:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#1f2937;background:#fff}body{margin:0}#app{min-height:100vh;display:grid;place-items:center;padding:24px}h1{margin:0;font-size:3rem;line-height:1.1;letter-spacing:0}