*{margin:0;padding:0;box-sizing:border-box}body{font-family:system-ui,-apple-system,sans-serif;display:flex;justify-content:center;align-items:center;min-height:100vh;background:#f0f4f8;color:#1a202c}.app{text-align:center;padding:3rem;background:#fff;border-radius:12px;box-shadow:0 4px 6px #0000001a;max-width:480px;width:90%}h1{font-size:2.5rem;margin-bottom:.5rem;color:#2b6cb0}p{font-size:1.1rem;margin-bottom:1.5rem;color:#4a5568}input{padding:.75rem 1rem;font-size:1rem;border:2px solid #e2e8f0;border-radius:8px;width:100%;max-width:320px;outline:none;transition:border-color .2s}input:focus{border-color:#2b6cb0}