:root{--bg: #f5f6f8;--card: #fff;--text: #1d2129;--muted: #86909c;--line: #e5e6eb;--brand: #ff6a00;--brand-dark: #e85d00;--ok: #00a870;--warn: #d97706;--bad: #d92d20;--blue: #2563eb}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.6 -apple-system,PingFang SC,Microsoft YaHei,sans-serif}h1,h2,h3{margin:0}h2{font-size:17px}h3{font-size:16px}.muted{color:var(--muted)}.small{font-size:12px;font-weight:400}.err{color:var(--bad)}.pad{padding:24px 0}.center{text-align:center}.pre{white-space:pre-wrap}.nowrap{white-space:nowrap}.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px}.grow{flex:1;min-width:0}.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}input,select,textarea,button{font:inherit;color:inherit}input,select,textarea{border:1px solid var(--line);border-radius:6px;padding:7px 10px;background:#fff;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--brand)}textarea{width:100%;resize:vertical}button{border:1px solid var(--line);background:#fff;border-radius:6px;padding:7px 14px;cursor:pointer}button:hover{border-color:#c9cdd4}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--brand);border-color:var(--brand);color:#fff}button.primary:hover{background:var(--brand-dark)}button.link{border:0;background:none;padding:2px 6px;color:var(--blue)}button.link.danger{color:var(--bad)}.card{background:var(--card);border-radius:10px;padding:20px;margin-bottom:16px;box-shadow:0 1px 2px #0000000a}.form{display:flex;flex-direction:column;gap:14px;max-width:760px}.form label{display:flex;flex-direction:column;gap:4px;font-weight:500}.form label input,.form label textarea{font-weight:400}.hint{display:block;color:var(--muted);font-size:12px;font-weight:400}.form label.check{flex-direction:row;gap:10px;align-items:flex-start}.check input{margin-top:5px}.login{min-height:100vh;display:grid;place-items:center;padding:16px}.login .card{width:100%;max-width:360px;display:flex;flex-direction:column;gap:14px}.login label{display:flex;flex-direction:column;gap:4px}.shell header{background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:16px;padding:0 20px;position:sticky;top:0;z-index:5;flex-wrap:wrap}.brand{font-weight:600;font-size:16px;padding:12px 0}nav{display:flex;gap:4px;flex:1;overflow-x:auto}nav button{border:0;border-radius:0;padding:14px 12px;border-bottom:2px solid transparent;white-space:nowrap;background:none}nav button.on{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}.dot{font-style:normal;background:var(--bad);color:#fff;border-radius:9px;font-size:11px;padding:0 6px;margin-left:4px}main{max-width:1100px;margin:0 auto;padding:16px}.banner{background:#fff7e6;border:1px solid #ffd591;color:#ad4e00;border-radius:8px;padding:10px 14px;margin-bottom:16px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}.stats div{background:#fff;border-radius:10px;padding:14px 16px}.stats b{display:block;font-size:24px;line-height:1.2}.stats span{color:var(--muted);font-size:12px}.tablewrap{overflow-x:auto;margin-top:12px}table{width:100%;border-collapse:collapse}th{text-align:left;color:var(--muted);font-weight:400;font-size:12px}th,td{padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}tr.off td{opacity:.5}tr.off td:nth-last-child(-n+2){opacity:1}td.pre{min-width:220px}.tag{display:inline-block;font-size:12px;padding:0 8px;border-radius:10px;background:#f2f3f5;color:#4e5969;margin-right:4px;white-space:nowrap}.tag.s-keyword,.tag.s-intent{background:#e8f7f0;color:var(--ok)}.tag.s-kb{background:#e8f0ff;color:var(--blue)}.tag.s-fallback,.tag.warn{background:#fff4e5;color:var(--warn)}.tag.s-error{background:#fdecea;color:var(--bad)}.chat .msgs{height:46vh;min-height:260px;overflow-y:auto;background:var(--bg);border-radius:8px;padding:14px;margin:12px 0}.bubble{max-width:78%;padding:8px 12px;border-radius:10px;margin-bottom:10px;width:fit-content}.bubble.buyer{background:#fff}.bubble.bot{background:#fff1e6;margin-left:auto}.bubble .tag{margin-top:6px}.toast{position:fixed;left:50%;bottom:32px;transform:translate(-50%);background:#1d2129;color:#fff;padding:9px 18px;border-radius:8px;z-index:20}.toast.bad{background:var(--bad)}@media(max-width:640px){.stats{grid-template-columns:repeat(2,1fr)}.bubble{max-width:92%}}