*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:#f1f5f9;color:#1e293b;min-height:100vh}.demo-wrapper{max-width:860px;margin:0 auto;padding:3rem 1.5rem}.demo-wrapper h1{font-size:1.5rem;font-weight:700;letter-spacing:-.02em;margin-bottom:.25rem}.demo-subtitle{font-size:.875rem;color:#64748b;margin-bottom:1.5rem}