main{text-align:center;max-width:640px;padding:1.5rem}h1{font-size:clamp(1.75rem,6vw,2.75rem);font-weight:600;line-height:1.3;text-shadow:0 2px 12px rgba(0,0,0,.15)}*{margin:0;padding:0;box-sizing:border-box}body{min-height:100vh;display:flex;align-items:center;justify-content:center;font-family:system-ui,-apple-system,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}#root{width:100%;display:flex;align-items:center;justify-content:center}