:root{--navy: #1f3864;--blue: #2e74b5;--accent: #0563c1;--gold: #f2a900;--light: #eef3fa;--bg: #f4f6fa;--text: #24303f;--gray: #6b7686;--border: #e2e8f0}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:微软雅黑,Microsoft YaHei,-apple-system,Segoe UI,sans-serif;color:var(--text);background:var(--bg);font-size:14px}.app{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:64px;flex:none;background:var(--navy);color:#fff}.brand{display:flex;align-items:center;gap:12px}.logo{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--blue));display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;letter-spacing:.5px}.brand h1{margin:0;font-size:19px;font-weight:700}.brand h1 span{color:var(--gold);font-weight:800}.brand p{margin:2px 0 0;font-size:12px;color:#bdd0e8}.mode{display:flex;align-items:center;gap:7px;font-size:12.5px;padding:6px 14px;border-radius:20px}.mode.on{background:#2e7d3240;color:#b9f0bd}.mode.off{background:#ffffff1a;color:#d7e0ec}.mode .dot{width:8px;height:8px;border-radius:50%;background:currentColor}.mode.on .dot{background:#4caf50;box-shadow:0 0 6px #4caf50}.body{display:flex;flex:1;overflow:hidden}.sidebar{width:280px;flex:none;overflow-y:auto;background:#fff;border-right:1px solid var(--border);padding:16px 14px}.side-title{font-size:12px;font-weight:700;color:var(--gray);text-transform:uppercase;letter-spacing:1px;margin:6px 4px 10px}.chip{display:block;width:100%;text-align:left;background:var(--light);border:1px solid transparent;color:var(--navy);font-size:13px;padding:9px 12px;margin-bottom:8px;border-radius:8px;cursor:pointer;transition:all 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var(--border);background:#fff;color:var(--navy);font-size:13.5px;transition:all .15s}.welcome-chips button:hover{border-color:var(--blue);background:#e7f0fb}.welcome .hint{font-size:12px;color:#a2adbd;margin-top:8px}.user-row{display:flex;justify-content:flex-end;margin:16px 0}.user-bubble{max-width:70%;padding:10px 16px;border-radius:16px 16px 4px;background:var(--accent);color:#fff;font-size:14px;line-height:1.55;white-space:pre-wrap;word-break:break-word}.assistant{margin:16px 0}.result{background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px 18px;box-shadow:0 1px 3px #1f38640f}.result-head{display:flex;align-items:center;gap:12px;margin-bottom:10px}.metric-badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--navy);background:var(--light);padding:5px 12px;border-radius:8px}.metric-badge 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#0563c11f}.login-err{font-size:12.5px;color:#c0392b;text-align:left}.login-card button{margin-top:6px;border:none;border-radius:10px;padding:12px;background:var(--accent);color:#fff;font-size:15px;font-weight:600;cursor:pointer}.login-card button:disabled{background:#b7c4d4;cursor:not-allowed}.login-card button:not(:disabled):hover{background:#0a4fa0}.trace-block{margin-top:12px;border-top:1px dashed var(--border);padding-top:10px}.trace{display:flex;flex-direction:column;gap:10px;margin-top:10px}.trace-step{background:#f8fafc;border:1px solid var(--border);border-radius:10px;padding:10px 12px}.trace-call{display:flex;align-items:center;gap:8px;font-size:13px}.trace-tag{flex:none;font-size:11px;font-weight:700;color:#fff;background:var(--blue);padding:2px 8px;border-radius:10px}.trace-call code{background:#eef3fa;padding:2px 8px;border-radius:6px;font-family:Consolas,Monaco,monospace;font-size:12.5px;color:var(--accent)}.trace-args{margin:8px 0 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8px;border-radius:6px;font-family:Consolas,Monaco,monospace;font-size:12px;color:var(--accent)}.nav-tabs{display:flex;gap:4px;background:#ffffff14;border-radius:20px;padding:3px}.nav-tab{border:none;background:transparent;color:#c7d6ea;font-size:13px;padding:6px 16px;border-radius:17px;cursor:pointer;transition:all .15s}.nav-tab:hover{color:#fff}.nav-tab.on{background:#fff;color:var(--navy);font-weight:700}.whoami{font-size:13px;color:#bdd0e8;max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.kb-side .side-title{margin-top:14px}.kb-empty{font-size:13px;color:var(--gray);padding:4px 8px}.kb-doc-list{display:flex;flex-direction:column;gap:8px}.kb-doc{background:var(--light);border:1px solid var(--border);border-radius:8px;padding:8px 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14px;border-radius:8px;cursor:pointer}.btn:hover{border-color:var(--blue)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:#0a4fa0}.btn.sm{font-size:12px;padding:4px 10px;margin-left:4px}.btn.danger{color:#c0392b;border-color:#f1c1bc}.btn.danger:hover{background:#fdecea}.badge{display:inline-block;font-size:11px;padding:2px 8px;border-radius:10px;background:var(--light);color:var(--navy)}.badge.admin{background:#eaf4ff;color:var(--accent)}.badge.ok{background:#e8f7ec;color:#1e7e34}.badge.off{background:#f2f3f5;color:#a2adbd}.badge.data{background:#fff3e0;color:#b26a00}.badge.login{background:#eef3fb;color:#3a5a9c}.admin-form{margin-top:18px;border:1px solid var(--border);border-radius:10px;padding:16px 18px;background:#fbfcfe;max-width:640px}.admin-form h4{margin:0 0 14px;font-size:14px;color:var(--navy)}.form-row{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px}.form-row>label{flex:none;width:120px;font-size:13px;color:var(--gray);padding-top:7px}.form-row input[type=text],.form-row input[type=password]{flex:1;border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:13px;font-family:inherit;outline:none}.form-row input:focus{border-color:var(--accent)}.form-row input:disabled{background:#f2f3f5;color:#a2adbd}.check{font-size:13px;display:inline-flex;align-items:center;gap:6px;cursor:pointer}.check input{cursor:pointer}.check-group{display:flex;flex-wrap:wrap;gap:12px;padding-top:4px}.form-actions{display:flex;gap:10px;margin-top:6px}.audit-filter{display:flex;align-items:center;gap:8px}.audit-filter input{border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:13px;font-family:inherit;outline:none}.audit-q{max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.audit-pager{display:flex;align-items:center;gap:14px;margin-top:14px;font-size:13px;color:var(--gray)}.audit-pager .btn:disabled{opacity:.5;cursor:not-allowed}.admin-layout{flex:1;display:flex;overflow:hidden}.admin-side{width:200px;flex:none;background:#fff;border-right:1px solid var(--border);padding:14px 0;display:flex;flex-direction:column;gap:2px}.admin-menu{border:none;background:transparent;text-align:left;padding:12px 22px;font-size:14px;color:var(--text);cursor:pointer;border-left:3px solid transparent;transition:all .12s}.admin-menu:hover{background:var(--light)}.admin-menu.on{background:var(--light);color:var(--accent);font-weight:700;border-left-color:var(--accent)}.admin-main{flex:1;overflow-y:auto;padding:20px 24px}.admin-upload{display:flex;align-items:center;gap:10px;margin-bottom:14px;padding:14px;background:var(--light);border:1px solid var(--border);border-radius:10px}.admin-upload .kb-input{flex:1;max-width:320px}