:root{--background:#0a0a0a;--foreground:#ededed}html,body{background-color:var(--background);width:100%;height:100%;color:var(--foreground);margin:0;padding:0;font-family:Arial,Helvetica,sans-serif;overflow:hidden}canvas{display:block}button:focus-visible,input:focus-visible,[role=button]:focus-visible{outline-offset:2px;outline:2px solid #0f0}