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var(--border);color:var(--text-secondary);cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);font-size:11px;transition:all .15s}.feedbackBtn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.textSelectionToolbar{position:fixed;z-index:100;display:flex;align-items:center;gap:10px;padding:6px 10px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);font-size:13px;animation:fadeInUp .15s ease}@keyframes fadeInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.textSelectionLabel{color:var(--text-secondary);max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border-right:1px solid var(--border-light);padding-right:10px}.textSelectionAskBtn{display:flex;align-items:center;gap:4px;padding:4px 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var(--primary-light)}.rechargePresets{display:flex;flex-wrap:wrap;gap:6px}.rechargePreset{padding:5px 10px;font-size:12px;border:1px solid var(--border);border-radius:999px;background:var(--bg);color:var(--text-secondary);cursor:pointer;transition:all .15s;font-family:inherit}.rechargePreset:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.rechargeResult{padding:8px 12px;border-radius:var(--radius-sm);font-size:13px;line-height:1.5}.rechargeResult.success{background:#22c55e1a;color:#16a34a;border:1px solid rgba(34,197,94,.25)}.rechargeResult.error{background:#ef44441a;color:var(--danger);border:1px solid rgba(239,68,68,.25)}.rechargeActions{display:flex;gap:10px;justify-content:flex-end;margin-top:4px}.rechargeCancel,.rechargeSubmit{padding:8px 18px;border-radius:var(--radius-sm);font-size:13px;cursor:pointer;transition:all .15s;font-family:inherit;display:inline-flex;align-items:center;gap:6px}.rechargeCancel{background:var(--bg);border:1px solid 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.15s;align-self:flex-start}.mindmapPanelDelete:hover{background:#dc26261f;border-color:var(--danger)}.mindmapPanelTitle{padding:10px 16px 6px;font-size:12px;font-weight:600;color:var(--text-secondary);margin:0}.mindmapPanelLoading{display:flex;justify-content:center;padding:16px;color:var(--text-muted)}.mindmapPanelEmpty{display:block;padding:4px 16px 16px;font-size:12px;color:var(--text-muted)}.mindmapProblemList{list-style:none;margin:0;padding:0 8px 12px;display:flex;flex-direction:column;gap:4px}.mindmapProblemItem{display:flex;flex-direction:column;gap:2px;padding:8px 10px;border-radius:var(--radius-sm);cursor:pointer;transition:background .15s}.mindmapProblemItem:hover{background:var(--primary-light)}.mindmapProblemItem .mindmapProblemTitle{font-size:13px;color:var(--text);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.mindmapProblemItem small{font-size:11px;color:var(--text-muted)}.mindmapResultCard{display:flex;align-items:center;gap:10px;margin-top:12px;padding:10px 14px;border:1px solid rgba(15,118,110,.2);border-radius:var(--radius);background:var(--primary-light);color:var(--primary)}.mindmapResultCard svg{flex-shrink:0}.mindmapResultBody{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}.mindmapResultBody strong{font-size:13px;color:var(--text);font-weight:600;word-break:break-word}.mindmapResultBody small{font-size:12px;color:var(--text-secondary)}.mindmapResultCard .actionLink{flex-shrink:0;background:var(--primary);border-color:var(--primary);color:#fff}.mindmapResultCard .actionLink:hover:not(:disabled){opacity:.9;background:var(--primary);color:#fff}.problemMindmapTriggerSection{display:flex;align-items:center;gap:8px}.problemMindmapTrigger{display:flex;align-items:center;gap:10px;flex:1;min-width:0;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius);background:linear-gradient(135deg,#f0fdf4,#ecfeff);cursor:pointer;font-family:inherit;text-align:left;transition:border-color .15s,box-shadow .15s}.problemMindmapTrigger:hover{border-color:var(--primary);box-shadow:var(--shadow)}.problemMindmapTrigger svg:first-child{color:var(--primary);flex-shrink:0}.problemMindmapTriggerBody{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0}.problemMindmapTriggerBody strong{font-size:13px;color:var(--text)}.problemMindmapTriggerBody small{font-size:12px;color:var(--text-secondary)}.problemMindmapTriggerSection .problemMindmapPanelClose{flex-shrink:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center;padding:0;border:1px solid var(--border);background:var(--surface);color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;transition:color .15s,background .15s,border-color .15s}.problemMindmapTriggerSection .problemMindmapPanelClose:hover{color:var(--danger);background:#fef2f2;border-color:var(--danger)}.pmOverlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;flex-direction:column;background:var(--surface)}.pmOverlayHeader{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow);z-index:10}.pmOverlayTitle{font-size:15px;font-weight:600;color:var(--text)}.pmOverlayClose{display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:var(--radius-sm);cursor:pointer;transition:all .15s}.pmOverlayClose:hover{border-color:var(--danger);color:var(--danger);background:#fef2f2}.pmOverlayBody{flex:1;position:relative;overflow:hidden}.pmOverlayBody .react-flow__controls{box-shadow:var(--shadow);border-radius:var(--radius-sm);overflow:hidden}.pmOverlayBody .react-flow__controls-button{border-color:var(--border);background:var(--surface);color:var(--text)}.pmOverlayBody .react-flow__controls-button:hover{background:var(--border-light)}.pmNodeCard{display:flex;flex-direction:column;justify-content:center;gap:2px;width:180px;min-height:48px;padding:8px 12px;border-radius:var(--radius-sm);font-family:inherit;text-align:left;box-shadow:var(--shadow);border:1px solid var(--border);background:var(--surface);position:relative}.pmNodeCard.pmDepth-0{background:var(--primary);color:#fff;border-color:var(--primary);font-size:14px}.pmNodeCard.pmDepth-0 .pmNodeNote{color:#ffffffd9}.pmNodeCard.pmDepth-1{background:#ecfdf5;border-color:#a7f3d0}.pmNodeCard.pmDepth-2{background:#fef3c7;border-color:#fde68a}.pmNodeCard.pmDepth-3,.pmNodeCard.pmDepth-4{background:var(--surface);border-color:var(--border)}.pmNodeLabel{font-size:13px;font-weight:600;line-height:1.4;word-break:break-word}.pmNodeNote{font-size:11px;color:var(--text-secondary);line-height:1.3;word-break:break-word}.pmNodeToggleBtn{position:absolute;right:-12px;top:50%;transform:translateY(-50%);display:flex;align-items:center;justify-content:center;width:20px;height:20px;padding:0;border:1px solid var(--border);background:var(--surface);color:var(--text-secondary);border-radius:50%;cursor:pointer;z-index:5;transition:all .15s}.pmNodeToggleBtn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}@media(max-width:820px){.mindmapSidePanel{width:240px}.viewToggleBtn span,.viewToggleBtn{padding:7px}}