:root{font-family:-apple-system,system-ui,sans-serif;color:#222}body{margin:0;padding:1rem;max-width:1100px;margin-inline:auto}h1{font-size:1.4rem;margin-bottom:1rem}.card{border:1px solid #ddd;border-radius:8px;padding:1rem;margin-bottom:1rem}.controls{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1rem}.controls button{padding:.4rem .8rem;border:1px solid #bbb;background:#fff;border-radius:6px;cursor:pointer}.controls button[aria-pressed=true]{background:#222;color:#fff;border-color:#222}