:root{--bg:#f7f7fb;--card:#fff;--muted:#6b7280}html,body,#root{background:var(--bg);color:#111827;height:100%;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial}h1{margin:0 0 12px;font-size:22px}button:hover{background-color:#f1f5f9;transition:background .2s}@media (width<=1280px){body{font-size:15px}}