:root{--ink:#14252c;--teal:#17736b;--paper:#f5f8f7;--line:#dce6e4;--muted:#738187}*{box-sizing:border-box}body{margin:0;background:var(--paper);font-family:ui-sans-serif,system-ui,Microsoft YaHei,sans-serif}body,button{color:var(--ink)}button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:9px 13px;cursor:pointer;font:inherit}button:hover{border-color:var(--teal)}button:disabled{opacity:.55}input,select{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px;background:#fff;font:inherit;color:var(--ink)}.center,.login{min-height:100vh;display:grid;place-items:center}.login section{width:min(520px,calc(100vw - 32px));padding:38px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 55px #13302b12}.mark{width:48px;height:48px;border-radius:14px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:22px}.eyebrow{font-size:12px;color:var(--teal);letter-spacing:.09em;margin:25px 0 5px}.login h1{font-size:30px;margin:0}.muted,.sub{color:var(--muted)}.login form{margin-top:26px;display:grid;grid-gap:13px;gap:13px}.login label{display:grid;grid-gap:7px;gap:7px;font-size:14px}.login .check{display:block;color:var(--muted)}.login .check input{width:auto;margin-right:8px}.login form button{background:var(--teal);color:#fff;border-color:var(--teal)}.error,.warning{padding:10px 12px;border-radius:8px;font-size:14px}.warning{background:#fff8e8;color:#805f19}.error{background:#fff0ee;color:#9b4c43}.shell{display:grid;grid-template-columns:280px minmax(0,1fr);min-height:100vh}.shell aside{background:#fff;border-right:1px solid var(--line);padding:24px;display:flex;flex-direction:column;gap:14px}.brand{font-size:21px;font-weight:760;letter-spacing:-.04em}.brand span{display:block;color:var(--muted);font-size:12px;font-weight:400;letter-spacing:0;margin-top:4px}.identity{font-size:13px;background:#edf6f4;padding:9px;border-radius:7px;color:#46635f}.toggle{font-size:14px}.toggle input{width:auto;margin-right:7px}details{border-top:1px solid var(--line);padding-top:14px}summary{font-weight:650;cursor:pointer;margin-bottom:11px}details input,details select{margin-bottom:8px}.item{padding:10px 0;border-top:1px solid #edf1f0;font-size:12px}.item p{margin:6px 0;color:var(--muted);line-height:1.5}.item button{padding:4px 7px;font-size:12px}.logout{margin-top:auto;color:#8a4942}.chat{width:min(1000px,100%);margin:auto;padding:45px 42px 105px;position:relative}.chat header{border-bottom:1px solid var(--line);padding-bottom:21px}.chat h1{font-size:27px;margin:0}.chat header p{color:var(--muted);margin:8px 0 0}.empty{margin:28px 0;padding:15px;border-left:3px solid var(--teal);background:#eef7f5;color:#58706d;border-radius:6px}.messages{display:grid;grid-gap:16px;gap:16px;margin:25px 0}.messages article{max-width:90%;padding:15px 17px;border-radius:12px;border:1px solid var(--line);background:#fff}.messages article.user{margin-left:auto;background:#e8f4f1;border-color:#d5e8e4}.messages strong{font-size:13px;color:var(--teal)}.messages p{white-space:pre-wrap;line-height:1.65;margin:8px 0}.messages small{color:#607674}.actions{display:flex;gap:7px;flex-wrap:wrap;margin-top:13px}.actions button{font-size:12px;padding:6px 8px}.feedback{display:flex;gap:8px;margin-top:10px}.ask{display:flex;gap:10px;position:-webkit-sticky;position:sticky;bottom:14px;padding:11px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px #1230250c}.ask input{border:0;outline:0}.ask button,.toast{background:var(--ink);color:#fff}.toast{position:fixed;right:25px;bottom:22px;padding:10px 15px;border-radius:8px}.admin{max-width:1050px;padding:40px 24px;margin:auto}.admin header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.admin header p{margin:5px 0;color:var(--muted)}.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;margin:16px 0}.panel h1,.panel h2{margin:0 0 14px}.row{display:flex;align-items:end;gap:10px}.row label{font-size:13px;display:grid;grid-gap:6px;gap:6px}.code{font-family:ui-monospace,monospace;background:#edf6f4;padding:12px;border-radius:8px}.table{overflow:auto}.table table{border-collapse:collapse;width:100%;font-size:13px}.table td,.table th{text-align:left;padding:10px;border-bottom:1px solid var(--line);white-space:nowrap}@media(max-width:760px){.shell{display:block}.shell aside{border-right:0;border-bottom:1px solid var(--line);padding:17px}.shell aside details{display:none}.chat{padding:25px 16px 96px}.chat h1{font-size:22px}.messages article{max-width:100%}.row{display:grid}.admin{padding:24px 16px}.admin header{align-items:start}.toast{right:16px;bottom:16px}}