*{margin:0;padding:0}html,body{overflow:hidden}.webgl{position:fixed;top:0;left:0;outline:none}.gumroad-button{position:fixed;top:12px;left:12px;z-index:10;display:inline-block;padding:10px 12px;border-radius:8px;background:#ffffffe6;color:#111;font:600 14px/1 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;text-decoration:none}.gumroad-button:hover{text-decoration:underline}