:root{--ink:#20332c;--muted:#67786f;--paper:#f4f6f1;--card:#fff;--line:#dfe5dd;--green:#285c48;--light:#e7efe7;--orange:#916421;--error:#a13c32}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.6 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}main{max-width:1160px;margin:0 auto;padding:28px 28px 16px}header{display:flex;justify-content:space-between;gap:20px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px}.brand{font-size:14px;letter-spacing:2px;font-weight:700;color:var(--green)}h1{font-size:28px;margin:3px 0}h2{font-size:19px;margin:10px 0 14px}h3{font-size:17px;margin:0 0 7px}p{margin:8px 0}.subtitle,.fine,.team-line span{color:var(--muted)}.fine{font-size:13px}.team-line{display:flex;gap:16px;align-items:center;justify-content:space-between;margin:22px 0 10px}.team-line 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16px;border-radius:8px;background:var(--light);color:var(--green)}#notice.error{background:#fae9e5;color:var(--error)}#code-result{padding:14px;background:var(--light);margin-top:16px;border-radius:9px}code{overflow-wrap:anywhere;word-break:break-all;font:14px/1.6 ui-monospace,monospace}#registration-code{display:block;margin:10px 0;font-size:17px}.device-control{display:flex;gap:14px;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:12px 0}.device-control:last-child{border:0}.candidate-actions{display:flex;gap:9px}.candidate-card .fine{margin-bottom:12px}details.panel summary{cursor:pointer;font-weight:600}details.panel[open] summary{margin-bottom:14px}#offer-preview{max-width:100%;max-height:500px;display:block;object-fit:contain;margin:15px auto}#video-preview{width:100%;max-height:500px;background:#102219;border-radius:8px;margin:15px 0}#library-list article{padding:15px 0;border-bottom:1px solid var(--line)}#library-list article p{white-space:pre-wrap}.log-row{padding:14px 16px}.log-head{display:flex;justify-content:space-between;gap:14px;align-items:flex-start}.log-row .fine{margin:3px 0}.diagnostic{display:grid;grid-template-columns:minmax(120px,1fr) 2fr;gap:5px;font-size:13px;padding:10px;background:var(--paper);border-radius:6px;margin-top:8px}.empty{color:var(--muted);padding:18px 0}.view{padding-bottom:10px}footer{color:#7a897f;font-size:12px;text-align:center;padding:32px 0 14px}[hidden]{display:none!important}:focus-visible{outline:3px solid #92b4a4;outline-offset:3px}@media(max-width:700px){main{padding:18px 14px 12px}header{align-items:flex-start;gap:10px}h1{font-size:25px}.subtitle{font-size:13px}#session-actions{display:flex;flex-direction:column;gap:5px}#session-actions button{padding:5px 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