:root{--bg-app:#F1F1EE;--bg-panel:#FFFFFF;--border:#E5E5DF;--border-soft:#ECECE6;--hair:#F0F0EA;--row-head:#F7F7F3;--row-zebra:#FAFAF7;--ink:#1B1B19;--ink-2:#3D3D39;--ink-3:#57564E;--ink-mut:#8E8D83;--mono-mut:#9A998E;--chip-bg:#F7F7F4;--chip-border:#E7E7E1;--accent:#41618A;--accent-chip-bg:#F5F5F1;--accent-chip-bd:#E6E6DF;--canvas:#ECECE7;--page:#FFFFFF;--page-border:#E4E4DD;--page-ink:#1B1B19;--page-2:#4A4A45;--page-mut:#9A998E;--page-hair:#E4E4DD;--page-row:#F0F0EA;--green:#5E8C5E;--amber:#B89042;--graydot:#C2C1B6;--danger:#B0524A;--send-bg:#1B1B19;--send-fg:#FFFFFF;--sel-bg:#FAFAF7;--sel-border:#C4C3B9;--sel-rail:#1B1B19;--sel-chip-bg:#ECECE5;--sel-chip-bd:#DDDCD4}[data-theme=dark]{--bg-app:#131417;--bg-panel:#1B1D21;--border:#2B2E34;--border-soft:#262931;--hair:#262931;--row-head:#212329;--row-zebra:#1E2024;--ink:#ECEBE6;--ink-2:#C5C4BD;--ink-3:#9F9E96;--ink-mut:#6F706A;--mono-mut:#7E7F79;--chip-bg:#212329;--chip-border:#2E3138;--accent:#84ABDC;--accent-chip-bg:#1F242B;--accent-chip-bd:#2C333C;--canvas:#0D0E10;--page:#F7F6F2;--page-border:#34373D;--page-ink:#1B1B19;--page-2:#4A4A45;--page-mut:#8B8A80;--page-hair:#E0DFD7;--page-row:#ECEBE3;--green:#6FA06F;--amber:#C49A4E;--graydot:#4C4E53;--danger:#C77A72;--send-bg:#ECEBE6;--send-fg:#1B1B19;--sel-bg:#22252B;--sel-border:#3A3E45;--sel-rail:#84ABDC;--sel-chip-bg:#2A2E35;--sel-chip-bd:#363A42}*{box-sizing:border-box;margin:0;padding:0}body{font-family:IBM 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var(--border);z-index:10}.logo-container{display:flex;align-items:center;gap:11px}.logo-icon{font-size:1.25rem;color:var(--ink);display:flex;align-items:center}.logo-text{font-size:16px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}.status-indicator{display:flex;align-items:center;gap:7px;height:30px;padding:0 11px;font-size:12.5px;color:var(--ink-3);border-radius:7px;background:var(--chip-bg);border:1px solid var(--chip-border);white-space:nowrap}.status-mono{font-family:IBM Plex Mono,monospace;color:var(--mono-mut);font-size:11.5px}.status-dot{width:6px;height:6px;border-radius:50%}.status-online{background-color:var(--green)}.status-offline{background-color:var(--graydot)}.status-warning{background-color:var(--amber)}.theme-toggle{margin-left:4px;width:32px;height:30px;display:flex;align-items:center;justify-content:center;background:var(--chip-bg);border:1px solid var(--chip-border);border-radius:7px;cursor:pointer;color:var(--ink-3);padding:0;transition:background .12s linear,color .12s linear}.theme-toggle:hover{color:var(--ink)}.workspace{display:flex;flex:1;min-height:0;overflow:hidden;padding:14px;gap:14px}.chat-panel{flex:1.5;min-width:0;display:flex;flex-direction:column;overflow:hidden}.evidence-panel{flex:1.15;min-width:0;display:flex;flex-direction:column;overflow:hidden}.panel-header{display:flex;align-items:center;justify-content:space-between;flex:none;height:50px;padding:0 20px;border-bottom:1px solid var(--border-soft)}.panel-title{display:flex;align-items:center;gap:9px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.13em;color:var(--ink)}.config-group{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-mut)}.message-list{flex:1;min-height:0;overflow-y:auto;padding:26px 30px 30px;display:flex;flex-direction:column;gap:18px}.message-bubble{max-width:760px;font-size:14px;line-height:1.6;animation:slideIn .3s cubic-bezier(.16,1,.3,1)}.message-user{align-self:flex-end;background:var(--chip-bg);border:1px solid var(--chip-border);border-radius:12px 12px 3px;padding:12px 16px;color:var(--ink-2)}.message-assistant{align-self:flex-start;width:100%;color:var(--ink-2)}.reasoning-accordion{background:var(--row-head);border:1px solid var(--border);border-radius:9px;overflow:hidden;margin-bottom:.5rem;transition:all .2s ease;width:100%}.reasoning-accordion[open]{border-color:var(--accent-chip-bd)}.reasoning-summary{display:flex;align-items:center;gap:.5rem;padding:9px 12px;font-size:12px;font-weight:500;color:var(--ink-3);cursor:pointer;-webkit-user-select:none;user-select:none;list-style:none;transition:color .2s ease}.reasoning-summary::-webkit-details-marker{display:none}.reasoning-summary:hover{color:var(--ink)}.reasoning-content{padding:12px;border-top:1px solid var(--border-soft);font-family:IBM Plex 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linear}.chat-submit-btn:hover{opacity:.85}.chat-submit-btn:disabled{opacity:.45;cursor:default}.evidence-split{display:flex;height:100%;min-height:0}.evidence-viewer{flex:1;min-width:0;display:flex;flex-direction:column}.evidence-sidebar{width:280px;flex-shrink:0;border-left:1px solid var(--border-soft);display:flex;flex-direction:column;min-height:0}.evidence-sidebar-header{display:flex;align-items:center;gap:9px;flex:none;height:50px;padding:0 18px;font-size:13px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--border-soft)}.evidence-sidebar .source-list{flex:1;overflow-y:auto}.cad-viewport{flex:1;position:relative;background:var(--canvas);display:flex;align-items:center;justify-content:center;overflow:hidden;cursor:grab}.cad-viewport:active{cursor:grabbing}.cad-canvas{max-width:100%;max-height:100%;transform-origin:center;transition:transform .05s 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var(--sel-rail)}.source-meta{display:flex;align-items:center;justify-content:space-between}.source-title{font-weight:500;font-size:12.5px;line-height:1.4;color:var(--ink-2);word-break:break-word}.source-item-active .source-title{font-weight:600;color:var(--ink)}.source-pill{font-family:IBM Plex Mono,monospace;font-size:9.5px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);background:var(--row-head);border:1px solid var(--border);padding:2px 7px;border-radius:4px}.pill-text,.pill-visual{color:var(--ink-3);background:var(--row-head);border:1px solid var(--border)}.source-item-active .source-pill{background:var(--sel-chip-bg);border-color:var(--sel-chip-bd)}.source-score,.source-page{font-size:11px;color:var(--ink-mut);font-family:IBM Plex 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var(--border);border-radius:7px;font-size:11.5px;color:var(--ink-3)}.tool-step-name{font-family:IBM Plex Mono,monospace;font-weight:500;color:var(--accent)}.tool-step-summary{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tool-step-status{margin-left:auto;display:flex;align-items:center}.tool-spin{animation:tool-spin 1s linear infinite;color:var(--accent)}@keyframes tool-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.message-system{align-self:center;display:flex;align-items:center;gap:8px;max-width:85%;padding:6px 12px;border-radius:7px;background:var(--row-head);border:1px solid var(--border);font-size:11.5px;color:var(--ink-3);animation:slideIn .3s cubic-bezier(.16,1,.3,1)}.message-system-error{border-color:var(--danger);color:var(--danger)}.md-body{line-height:1.6;font-size:14px;color:var(--ink-2)}.md-body p{margin:0 0 14px}.md-body p:last-child{margin-bottom:0}.md-body h1{font-size:17px;font-weight:600;margin:18px 0 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var(--border);border-radius:9px;overflow:hidden}.md-body th,.md-body td{padding:9px 14px;text-align:left}.md-body th{background:var(--row-head);color:var(--ink-3);font-weight:600;border-bottom:1px solid var(--border)}.md-body td{color:var(--ink-2);border-bottom:1px solid var(--hair)}.md-body tr:last-child td{border-bottom:none}.md-body tr:nth-child(2n) td{background:var(--row-zebra)}.md-body blockquote{border-left:3px solid var(--accent-chip-bd);margin:12px 0;padding:4px 14px;color:var(--ink-3)}.md-body hr{border:none;border-top:1px solid var(--border);margin:16px 0}.md-img{max-width:100%;border-radius:8px;border:1px solid var(--border);margin:10px 0;display:block}.source-chip{display:inline-flex;align-items:center;gap:6px;background:var(--accent-chip-bg);border:1px solid var(--accent-chip-bd);color:var(--accent);padding:2px 8px;border-radius:6px;font-family:IBM Plex Mono,monospace;font-size:11.5px;margin:0 4px;cursor:pointer;transition:border-color .12s linear}.source-chip:hover{border-color:var(--accent)}