temu-pricing-calculator

输入：
- Temu 卷王价: $12.99 USD
- 1688 拿货价: ¥25.00

计算过程：
1. Temu 价格转人民币: $12.99 × 7.2 = ¥93.53
2. 回款预估: $12.99 × 45% = $5.85
3. 回款人民币: $5.85 × 7.2 = ¥42.09
4. 总成本: ¥25.00 + ¥3.50 = ¥28.50
5. 净利润: ¥42.09 - ¥28.50 = ¥13.59
6. 判定: ¥13.59 > ¥5.00 → ✅ GO

输入：
- Temu 卷王价: ¥45.00 CNY
- 1688 拿货价: ¥22.00

计算过程：
1. 回款预估: ¥45.00 × 45% = ¥20.25
2. 总成本: ¥22.00 + ¥3.50 = ¥25.50
3. 净利润: ¥20.25 - ¥25.50 = -¥5.25
4. 判定: -¥5.25 < ¥5.00 → ❌ PASS（亏损产品）

{
  "products": [
    {"name": "产品A", "temu_price": 12.99, "currency": "USD", "ali1688_price": 25},
    {"name": "产品B", "temu_price": 8.50, "currency": "USD", "ali1688_price": 35},
    {"name": "产品C", "temu_price": 65.00, "currency": "CNY", "ali1688_price": 20}
  ]
}

盈亏平衡价计算：
设净利润 = 0
回款预估(人民币) = 总成本
Temu价格 × 45% × 7.2 = 1688价格 + 3.5
Temu价格 = (1688价格 + 3.5) / (0.45 × 7.2)