{"stock_code": "600435", "stock_name": "北方导航", "market_type": "A", "analysis_date": "2026-05-18T13:40:49.069317", "structure_snapshot": {"structure_type": "downtrend", "ma200_position": "below", "phase": "late", "key_levels": [{"price": 13.48, "label": "支撑位1(头肩底头部)"}, {"price": 13.65, "label": "支撑位2(头肩顶颈线)"}, {"price": 14.68, "label": "压力位1(MA20)"}, {"price": 15.48, "label": "压力位2(MA200)"}], "trend_description": "当前价格13.51低于MA5(14.18)、MA20(14.68)、MA60(15.51)和MA200(15.48)，所有均线均位于价格上方。MA5在2026-05-