:root{--bg:#f6f7f9;--fg:#15181d;--mut:#667085;--card:#fff;--line:#d9dde3;--pri:#0068ff;--ok:#12a150;--warn:#b7791f;--bad:#d92d20}
@media (prefers-color-scheme:dark){:root{--bg:#101318;--fg:#e8ebf0;--mut:#98a2b3;--card:#1a1f27;--line:#2c3440;--pri:#4d94ff;--ok:#32d583;--warn:#f5b34a;--bad:#f97066}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans TC",sans-serif}
.bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 16px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.brand{font-size:17px}
nav{display:flex;gap:4px;flex-wrap:wrap}
nav a.navlink{display:inline-flex;align-items:center;min-height:38px;padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:inherit;text-decoration:none}
nav button.on{background:var(--pri);color:#fff;border-color:var(--pri)}
.spacer{flex:1}
main{max-width:980px;margin:0 auto;padding:16px}
h2{margin:0 0 8px;font-size:20px}h3{margin:0 0 6px;font-size:16px}
button,select,input{font:inherit;color:inherit}
button{border:1px solid var(--line);background:var(--card);border-radius:8px;padding:8px 12px;cursor:pointer;min-height:38px}
button.primary{background:var(--pri);border-color:var(--pri);color:#fff}
button.danger{color:var(--bad);border-color:var(--bad)}
button:disabled{opacity:.5;cursor:default}
input,select{border:1px solid var(--line);background:var(--card);border-radius:8px;padding:8px 10px;min-height:38px;width:100%}
label{display:block;margin-bottom:10px}label span{display:block;font-size:13px;color:var(--mut);margin-bottom:3px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;margin:12px 0}
.card.narrow{max-width:380px;margin:40px auto}
.card.warn{border-color:var(--warn);display:flex;flex-direction:column;gap:8px}
.card.warn code{word-break:break-all;user-select:all;background:var(--bg);padding:8px;border-radius:8px}
.row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}
.grid .card{margin:0}
.inline{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px;align-items:end}
.hint{color:var(--mut);font-size:13px;margin:4px 0 8px}
.err{color:var(--bad);min-height:1.2em;margin:6px 0 0}
.badge{display:inline-block;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:600;border:1px solid var(--line)}
.badge.connected{color:var(--ok);border-color:var(--ok)}
.badge.qr,.badge.scanned,.badge.new{color:var(--warn);border-color:var(--warn)}
.badge.disconnected,.badge.error{color:var(--bad);border-color:var(--bad)}
.acts{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.meta{color:var(--mut);font-size:13px;word-break:break-all}
.events{font:13px/1.5 ui-monospace,Consolas,monospace;max-height:420px;overflow:auto}
.events div{padding:3px 0;border-bottom:1px dashed var(--line);word-break:break-word}
.sub{display:flex;gap:8px;align-items:center;justify-content:space-between;padding:6px 0;border-bottom:1px dashed var(--line)}
#toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:10px 16px;border-radius:10px;z-index:20;max-width:90vw}
dialog{border:1px solid var(--line);border-radius:14px;background:var(--card);color:var(--fg);text-align:center;max-width:92vw}
dialog img{display:block;margin:8px auto;background:#fff;padding:6px;border-radius:8px;max-width:100%;height:auto}
[hidden]{display:none!important}
@media (max-width:520px){main{padding:12px}.bar{padding:8px 12px}}