:root{color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,sans-serif}body{max-width:1100px;margin:0 auto;padding:1.5rem}header p{max-width:70ch;line-height:1.5;color:#555}.header-row{display:flex;align-items:start;justify-content:space-between;gap:1rem;flex-wrap:wrap}#qr-share{position:relative}#qr-share summary{cursor:pointer;padding:.4rem .8rem;border-radius:6px;border:1px solid #888;background:#f4f4f4;color:#111;font-size:.85rem;list-style:none}#qr-share summary::-webkit-details-marker{display:none}#qr-share-body{position:absolute;right:0;z-index:1;margin-top:.4rem;padding:.75rem;border:1px solid #ccc;border-radius:8px;background:canvas;width:220px;text-align:center}#qr-share-body .hint{margin-top:.5rem}main{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}@media (max-width: 800px){main{grid-template-columns:1fr}}.panel{border:1px solid #ccc;border-radius:8px;padding:1rem;display:flex;flex-direction:column;gap:.75rem}.panel h2{margin-top:0}label{display:flex;flex-direction:column;gap:.25rem;font-size:.9rem}[hidden]{display:none!important}label.checkbox{flex-direction:row;align-items:center;gap:.5rem}textarea{font-family:inherit}button{cursor:pointer;padding:.4rem .8rem;border-radius:6px;border:1px solid #888;background:#f4f4f4;color:#111}button:hover{background:#e8e8e8}.controls-row{display:flex;gap:.5rem;flex-wrap:wrap}optical-send,optical-receive{width:100%;max-width:360px}.log{background:#111;color:#9fef9f;padding:.75rem;border-radius:6px;max-height:160px;overflow:auto;font-size:.8rem;white-space:pre-wrap;word-break:break-word}#proposal-host,#capability-host,#result-media{border:1px dashed #999;border-radius:6px;padding:.75rem}#proposal-host:empty,#capability-host:empty,#result-media:empty{display:none}#result-media img{max-width:100%;display:block}.hint{font-size:.85rem;color:#666;margin:0}#decision-panel{grid-column:1 / -1}#decision-panel optical-send,#decision-panel optical-receive{max-width:200px}