body{font:16px/1.6 Tahoma,sans-serif;background:#f4f7fb;color:#17324b;margin:0}main{max-width:1100px;margin:30px auto;padding:24px}section,article{background:white;padding:22px;margin:18px 0;border-radius:12px;border:1px solid #d7e0ea}form{display:flex;flex-wrap:wrap;gap:14px;align-items:end}label{display:flex;flex-direction:column}input,select,button{font:inherit;padding:8px;border:1px solid #aab9c8;border-radius:6px}button{background:#e2edfa;cursor:pointer}button:disabled{opacity:.5;cursor:wait}pre{white-space:pre-wrap;overflow-wrap:anywhere}#status{padding:12px;background:#e2edfa}#qr{width:200px}.devices{margin-top:12px}