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1.3125rem;--font-size-3xl: 1.5rem;--font-size-4xl: 1.875rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-base: 1.65;--line-height-relaxed: 1.8;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 10px;--radius-xl: 12px;--radius-full: 9999px;--border-radius-xs: 5px;--border-radius-sm: 6px;--border-radius-md: 10px;--border-radius-lg: 12px;--border-radius-full: 9999px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-7: 28px;--space-8: 32px;--space-10: 40px;--space-content-x: 28px;--space-content-y: 24px;--space-content-x-mobile: 16px;--space-content-y-mobile: 16px;--sidebar-width: 228px;--topbar-height: 48px;--input-bar-height: 76px;--chat-max-width: 800px;--page-padding: 24px 28px;--page-icon-size: 44px;--page-max-width-content: 780px;--page-max-width-list: 960px;--shadow-xs: 0 1px 2px rgba(0,0,0,.04);--shadow-sm: 0 1px 3px rgba(0,0,0,.05);--shadow-md: 0 4px 12px rgba(0,0,0,.08);--shadow-lg: 0 8px 24px rgba(0,0,0,.12);--shadow-primary: 0 4px 14px rgba(22,166,116,.22);--transition-fast: .12s ease;--transition-base: .15s ease;--transition-slow: .28s cubic-bezier(.4,0,.2,1);--transition-normal: .22s ease;--color-active-fill: #1a1f2e;--color-active-text: #ffffff;--color-primary: var(--color-brand-teal-dark);--color-primary-accent: var(--color-brand-teal);--color-primary-light: var(--color-brand-teal-dim);--color-primary-dark: var(--color-brand-teal-dark);--gradient-primary: linear-gradient(135deg, var(--color-brand-teal-dark) 0%, var(--color-brand-teal) 100%);--color-bg: var(--color-bg-page);--color-surface: var(--color-bg-card);--color-text: var(--color-text-primary);--color-surface-hover: rgba(0,0,0,.04);--color-success-bg: rgba(26,158,117,.08);--color-success-text: #0f5c43;--color-success-dark: #0f5c43;--color-success-light: var(--color-success-dim);--color-success-border: #86d9b6;--color-warning-bg: #fffbeb;--color-warning-light: var(--color-warning-dim);--color-warning-border: #f3d088;--color-warning-text: var(--color-warning);--color-warning-dark: #6e4d08;--color-danger-bg: rgba(192,57,43,.08);--color-danger-light: var(--color-danger-dim);--color-danger-border: #f3a8a0;--color-danger-text: var(--color-danger);--color-danger-dark: #82261c;--color-info-bg: rgba(24,95,165,.08);--color-info-text: var(--color-info);--badge-high-bg: var(--color-brand-teal-dim);--badge-high-text: var(--color-brand-teal-dark);--badge-medium-user-bg: #f3f4f6;--badge-medium-user-text: #374151;--badge-medium-llm-bg: var(--color-info-dim);--badge-medium-llm-text: var(--color-info);--badge-low-bg: var(--color-warning-dim);--badge-low-text: var(--color-warning-dark);--badge-low-border: #f3d088}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#app{height:100%;font-family:var(--font-family);font-size:var(--font-size-base);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}.workspace{display:flex;height:100vh;height:100dvh;overflow:hidden}.workspace__main{flex:1;display:flex;flex-direction:column;overflow:hidden}.sidebar{width:var(--sidebar-width);background:var(--color-bg-sidebar);color:var(--color-text-sidebar);border-right:none;display:flex;flex-direction:column;padding:var(--space-4);gap:var(--space-3);flex-shrink:0}.sidebar__placeholder{font-size:var(--font-size-sm);color:var(--color-text-muted);padding:var(--space-3) var(--space-2)}.sidebar__new-chat,.sidebar__logout{width:100%;padding:var(--space-2) var(--space-3);border-radius:var(--border-radius-sm);border:1px solid var(--color-border);background:var(--color-surface);font-size:var(--font-size-sm);font-family:var(--font-family);cursor:pointer;transition:background var(--transition-fast);text-align:left}.sidebar__new-chat{background:var(--gradient-primary);color:var(--color-text-inverse);border-color:transparent;font-weight:var(--font-weight-semibold);transition:all var(--transition-base)}.sidebar__new-chat:hover{transform:translateY(-1px);box-shadow:var(--shadow-primary)}.sidebar__logout:hover{background:var(--color-bg)}.sidebar__func-nav{display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--color-border);padding-top:var(--space-2)}.sidebar__func-link{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);border-radius:var(--border-radius-sm);font-size:var(--font-size-sm);color:var(--color-text);text-decoration:none;transition:background var(--transition-fast),color var(--transition-fast)}.sidebar__func-link:hover{background:var(--color-bg);color:var(--color-primary)}.sidebar__func-link--active{background:var(--color-primary-light);color:var(--color-primary);font-weight:var(--font-weight-medium)}.sidebar__func-icon{font-size:14px;width:18px;text-align:center;flex-shrink:0}.chat-window{display:grid;grid-template-rows:auto 1fr auto;height:100%;overflow:hidden}.chat-window__messages{overflow-y:auto;min-height:0;padding:var(--space-6) var(--space-4);display:flex;flex-direction:column;gap:var(--space-4)}.message-bubble{max-width:var(--chat-max-width);padding:var(--space-4);border-radius:var(--border-radius-md);line-height:1.65;font-size:var(--font-size-base)}.message-bubble--user{align-self:flex-end;background:var(--gradient-primary);color:var(--color-text-inverse);border-bottom-right-radius:var(--border-radius-xs)}.message-bubble--assistant{align-self:flex-start;background:var(--color-surface);border:1px solid var(--color-border);border-bottom-left-radius:var(--border-radius-sm);box-shadow:var(--shadow-sm)}.message-bubble--loading{opacity:.6}.bubble__mode-badge{display:inline-block;font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);padding:2px var(--space-2);border-radius:var(--border-radius-sm);background:var(--color-surface-hover, #f0f4ff);color:var(--color-primary);margin-bottom:var(--space-2)}.bubble__pending-badge{display:inline-block;font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);padding:2px var(--space-2);border-radius:var(--border-radius-sm);background:#fff7e6;color:#d46b08;border:1px solid #ffd591;margin-left:var(--space-2);margin-bottom:var(--space-2)}.bubble__source-badge{display:inline-block;font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);padding:2px var(--space-2);border-radius:var(--border-radius-sm);margin-bottom:var(--space-2)}.bubble__source-badge--internal{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe}.bubble__source-badge--internal_mixed,.bubble__source-badge--external{background:#fff7ed;color:#c2410c;border:1px solid #fed7aa}.bubble__source-badge--ai_knowledge{background:#f0f9ff;color:#0369a1;border:1px solid #bae6fd}.bubble__source-badge--mcp{background:#f0fdf4;color:#15803d;border:1px solid #bbf7d0}.bubble__source-badge--mcp_partial{background:#fff7ed;color:#c2410c;border:1px solid #fed7aa}.bubble__source-badge--comparison{background:#f5f3ff;color:#6d28d9;border:1px solid #ddd6fe}.bubble__source-badge--report{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe}.bubble__source-badge--blocked{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}.bubble__trust-warning{font-size:var(--font-size-xs);color:#92400e;background:#fffbeb;border:1px solid #fcd34d;border-radius:var(--border-radius-sm);padding:4px var(--space-2);margin-top:var(--space-1)}.trust-badge{display:inline-flex;align-items:center;gap:var(--space-1);font-size:var(--font-size-xs);padding:2px 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