:root{font:15px/1.5 system-ui,sans-serif;color:#233b35;background:#f3f5ef}body{margin:0}main{max-width:1440px;margin:auto;padding:18px}h1{font-size:26px;margin:0}h2{font-size:18px}header p{margin:6px 0 14px;max-width:900px}.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:end;margin-bottom:12px}label{display:grid;font-size:12px;font-weight:650;gap:4px}select,button{font:inherit;border:1px solid #b7c5b8;padding:8px;border-radius:7px;background:#fff;color:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:wait}button:focus-visible,select:focus-visible,canvas:focus-visible{outline:3px solid #bc873b;outline-offset:2px}#viewport{position:relative;height:min(65vh,720px);min-height:320px;background:#dfe7db;border-radius:12px;overflow:hidden}canvas{width:100%;height:100%;display:block;touch-action:none}#status{position:absolute;top:0;left:12px;background:#ffffffe8;padding:7px 10px;border-radius:7px;pointer-events:none;font-size:12px;max-width:80%}.controls{font-size:12px}.results{background:#fff;padding:12px 18px;border:1px solid #d1dcd0;border-radius:10px}pre{font:12px/1.5 ui-monospace,monospace;white-space:pre-wrap;overflow-wrap:anywhere}details{margin-top:14px;font-size:13px}a{color:#0b6252}@media(max-width:650px){main{padding:12px}.toolbar{gap:8px}label{flex:1 1 140px}#viewport{height:52vh}h1{font-size:22px}}