:root { color-scheme:light; font-family:Arial,"Apple SD Gothic Neo","Malgun Gothic",sans-serif; color:#000; background:#fff; }
* { box-sizing:border-box; }
html, body, main { width:100%; height:100%; margin:0; overflow:hidden; }
.artwork { position:fixed; inset:0; width:100%; height:100%; height:100dvh; background:#fff; overflow:hidden; touch-action:manipulation; }
canvas { display:block; width:100%; height:100%; }
#input { position:absolute; width:2px; height:2px; padding:0; border:0; margin:0; opacity:0; resize:none; overflow:hidden; font-size:16px; color:transparent; caret-color:transparent; background:transparent; outline:none; }