:root{font:16px/1.6 system-ui,sans-serif;color:#173042;background:#f1f5f8}main{max-width:1100px;margin:40px auto;padding:24px}section{background:white;padding:24px;border-radius:12px;margin:20px 0}h1{font-size:30px}h2{font-size:21px}input,select,button{font:inherit;padding:9px 14px;border:1px solid #a6b8c3;border-radius:6px;margin:5px}button{background:#145f85;color:white;cursor:pointer}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;background:#eef4f7;padding:16px;max-height:650px;overflow:auto}#pair-code{font-size:22px;font-weight:600}#status{min-height:26px}.bar{display:flex;gap:12px}[hidden]{display:none!important}