{"stock_code": "601899", "stock_name": "紫金矿业", "market_type": "A", "analysis_date": "2026-03-25T06:19:54.491467", "structure_snapshot": {"structure_type": "downtrend", "ma200_position": "above", "phase": "unclear", "key_levels": [{"price": 44.94, "label": "近期高点（2026-01-29）"}, {"price": 35.86, "label": "头肩顶形态颈线"}, {"price": 33.18, "label": "当前价格"}, {"price": 30.58, "label": "近期低点（2026-03-23）"}, {"price": 29.8, "label": "近期低点（2026-03-22）"}, {"price": 28.09, "label": "MA200"}], "trend_description":