:root{font-family:Arial,sans-serif;line-height:1.5;color:#161a22;background-color:#f5f8ff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-width:320px}#root{min-height:100vh}.app{max-width:540px;margin:0 auto;padding:4rem 1.25rem;text-align:center}.app h1{margin:0 0 .5rem;font-size:clamp(1.8rem,4vw,2.4rem)}.app p{margin:0 0 1.5rem;color:#2f3440}.app button{border:0;border-radius:10px;padding:.7rem 1rem;background:#0d6efd;color:#fff;font-size:1rem;cursor:pointer}.app button:hover{background:#0b5ed7}.actions{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap}.app .secondary{background:#6c757d}.app .secondary:hover{background:#5c636a}.status{margin-top:1rem;color:#4a4f5a;font-size:.95rem}