*{box-sizing:border-box}html,body{margin:0;background:transparent;color:#c8c8c5;font-family:Arial,Helvetica,sans-serif;overflow:hidden}main,section{margin:0;padding:0}.butterfly-stage{position:relative;width:100%;aspect-ratio:1602/2048;overflow:hidden}.butterfly-stage img{display:block;width:100%;height:auto}.butterfly-stage canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.controls{padding:14px 0 0}button{font:12px Arial,Helvetica,sans-serif;letter-spacing:.02em;padding:8px 12px;min-height:36px;border:1px solid #666;border-radius:4px;background:transparent;color:inherit;cursor:pointer}button:focus-visible{outline:3px solid #c9ae60;outline-offset:2px}