什么是超级计算器？
超级计算器是一款收据纸风格的可回溯计算器。与传统计算器按完等号结果就消失不同，每一步计算都会自动追加到收据纸上，你可以：
- 逐步记录：每算一步自动换行，表达式和结果一目了然
- 添加备注：每行旁边可打字备注，如"中午饭钱""打车费"
- 累计汇总：底部实时显示所有金额的合计
- 历史会话：每笔对账单独保存，可随时切换查看
- 导出分享：导出为 CSV 表格或截图图片，方便粘贴到报销单
适用场景：财务对账、项目报销、AA 分账、记账核对、日常算账等。所有数据存储在浏览器本地，不会上传服务器。
What is Super Calculator?
Super Calculator is a receipt-style calculator with full traceability. Unlike traditional calculators where results vanish after pressing equals, each calculation step is automatically appended to the receipt paper. You can:
- Step-by-step recording: Each calculation auto-appends a new line showing expression and result
- Add notes: Add a note beside each line, e.g. "lunch", "taxi fare"
- Running total: Bottom shows real-time sum of all amounts
- Session history: Each reconciliation saved separately, switch anytime
- Export & share: Export as CSV spreadsheet or screenshot image
Use cases: financial reconciliation, expense reports, bill splitting, bookkeeping, daily calculations. All data is stored locally in your browser and never uploaded.