闪电鼠 8 档套餐成本回报测算：从 15 元限时版到 498 元擎天版的场景定位矩阵

[ 闪电鼠 8 档真实订阅方案阶梯矩阵 ]
  
  ┌─ 个人轻度尝鲜 ──> 限时特惠小包 (¥96/年, 8元/月) / 限时版 (¥15/月, 50G)
  │
  ├─ 个人主力首选 ──> 性价比版 (¥19.88/月, 100G) 👑 92% 用户首推
  │
  ├─ 重度发烧进阶 ──> 进阶版 (¥24.88/月, 150G) / 疾速版 (¥38.88/月, 250G)
  │
  ├─ 商业团队协作 ──> 雷霆版 (¥68.88/月, 500G, 2.5Gbps 峰值带宽)
  │
  └─ 终身按量免月费 ─> 破风版 (¥268 一次性, 220G) / 擎天版 (¥498 一次性, 688G 双ISP)

{
  "plans_matrix_summary": [
    { "name": "限时特惠小包", "price": 96.00, "period": "year", "monthly_eq": 8.00, "traffic": "60GB" },
    { "name": "闪电鼠·限时版", "price": 15.00, "period": "month", "daily_eq": 0.50, "traffic": "50GB" },
    { "name": "闪电鼠·性价比版", "price": 19.88, "period": "month", "daily_eq": 0.66, "traffic": "100GB", "flagship": true },
    { "name": "闪电鼠·进阶版", "price": 24.88, "period": "month", "daily_eq": 0.83, "traffic": "150GB" },
    { "name": "闪电鼠·疾速版", "price": 38.88, "period": "month", "daily_eq": 1.30, "traffic": "250GB" },
    { "name": "闪电鼠·雷霆版", "price": 68.88, "period": "month", "daily_eq": 2.30, "traffic": "500GB" },
    { "name": "闪电鼠·破风版", "price": 268.00, "period": "lifetime", "traffic": "220GB" },
    { "name": "闪电鼠·擎天版", "price": 498.00, "period": "lifetime", "traffic": "688GB", "dual_isp": true }
  ]
}