```json { "stock_code": "301139", "stock_name": "元道通信", "market_type": "A", "analysis_date": "2026-02-24T13:35:44.631672", "structure_snapshot": { "structure_type": "downtrend", "ma200_position": "below", "phase": "middle", "key_levels": [ {"price": 20.52, "label": "近14日高点"}, {"price": 21.66, "label": "MA200均线"}, {"price": 19.54, "label": "MA20均线"}, {"price": 19.02, "label": "MA5均线"}, {"price": 18.51, "label": "近14日低点"} ], "trend_de