{
  "kind": "synthetic_teaching",
  "not_otto_data": true,
  "opportunities": {
    "A": 100,
    "B": 100
  },
  "currency": "教学人民币元",
  "observation_end": "这15笔订单退货窗口结束后，同一观察批次",
  "retained_goods_gross_margin_rate": 0.3,
  "returned_goods": "全部可再次销售，不计减值；退货金额已从保留收入去掉，不能再扣一遍退款",
  "outbound_cost_per_order": 8,
  "handling_per_return": 10,
  "cohort_service_cost": {
    "A": 20,
    "B": 30
  },
  "cohort_ai_cost": {
    "A": 0,
    "B": 25
  },
  "allocation_note": "CSV把批次客服和AI费用等额分摊至原始订单，仅便于求和；不代表每单真实耗用，敏感性中保持批次总额",
  "excluded_costs": [
    "公司固定管理成本",
    "库存资金占用",
    "税费"
  ],
  "causal_claim": false
}