:root{color-scheme:light;--bg:#f5f5f3;--surface:#fff;--text:#1b1d20;--muted:#62676f;--line:#dedfdc;--accent:#ba450e;--good:#177348;--bad:#ad2424;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}main{max-width:980px;margin:0 auto;padding:36px 24px}header{border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:24px}.brand{font-size:25px;font-weight:750}.brand span{color:var(--accent);font-size:17px;letter-spacing:.12em;margin-left:12px}p{line-height:1.6}header p,.muted,footer{color:var(--muted);font-size:14px}section{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:28px}section#login,section#enroll{max-width:560px;margin:auto}h1{font-size:23px;margin:0 0 12px}h2{font-size:19px;margin:0 0 10px}label{display:block;margin-top:18px;font-size:14px;font-weight:600}input,select{display:block;width:100%;font:inherit;border:1px solid #b5b9be;border-radius:8px;background:#fff;min-height:44px;padding:10px 12px;margin-top:7px;color:var(--text)}input[readonly]{background:#f0f1ef}button{min-height:44px;border:1px solid transparent;border-radius:8px;background:var(--accent);color:#fff;padding:10px 18px;font:inherit;font-weight:600;cursor:pointer}button:hover{filter:brightness(.92)}button.secondary{background:#fff;color:var(--text);border-color:#b5b9be}button:disabled{background:#e8e9e5;color:#737972;cursor:default;filter:none}form>button{margin-top:24px;width:100%}:focus-visible{outline:3px solid #1f6cd8;outline-offset:3px}.section-head{display:flex;justify-content:space-between;align-items:center;gap:16px}.actions{display:flex;gap:10px;justify-content:flex-end}.health{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:22px 0}.health>div{background:#f5f5f3;padding:18px;border-radius:10px}.health span{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}.health strong{font-size:22px}.cities{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.city{border:1px solid var(--line);padding:20px;border-radius:12px}.city p{font-size:14px;color:var(--muted)}.mode-row{display:flex;align-items:center;gap:10px}.mode-row select{margin:0;flex:1;min-width:0}.mode-row button{white-space:nowrap}#notice:empty{display:none}#notice{font-size:14px;line-height:1.6;padding:12px 16px;border-radius:8px;margin-bottom:20px;overflow-wrap:anywhere}#notice.error{color:#8f1919;background:#ffebeb}#notice.success{color:#135d39;background:#e5f4e9}#qr{display:block;margin:18px auto;background:#fff}#seed,#codes{display:block;font-family:ui-monospace,monospace;font-size:15px;overflow-wrap:anywhere;white-space:pre-wrap;line-height:1.8;background:#f0f1ef;padding:12px;border-radius:8px}dialog{border:1px solid var(--line);border-radius:14px;width:min(460px,calc(100% - 32px));padding:24px}dialog::backdrop{background:#0006}dialog .actions{margin-top:22px}footer{margin-top:28px;text-align:center}[hidden]{display:none!important}@media(max-width:620px){main{padding:22px 14px}.cities{grid-template-columns:1fr}section{padding:20px}.health{gap:8px}.health>div{padding:12px 8px}.health strong{font-size:18px}.section-head{align-items:flex-start}.section-head .actions{gap:6px}.section-head button{font-size:14px;padding:8px 10px}header{margin-bottom:18px}}