```json { "stock_code": "600050", "stock_name": "中国联通", "market_type": "A", "analysis_date": "2026-01-13T11:46:30.174874", "structure_snapshot": { "structure_type": "uptrend", "ma200_position": "near", "phase": "middle", "key_levels": [ {"price": 5.49, "label": "近14日高点（2026-01-12）"}, {"price": 5.37, "label": "当前价格（与MA200重合）"}, {"price": 5.34, "label": "MA5与MA60交汇点附近"}, {"price": 5.19, "label": "MA20位置"}, {"price": 5.07, "label": "近14日低点（202