React & Node Trade Dashboard

I need a mobile-first web application that utilizes React for the frontend and either Node.js or Flask for the backend to display soybean trade and tariff data from an Excel file. This app should include the following scenes and features:

- **Login Page**: Allow users to log in with a username and password, and select a product type (e.g., Soybeans or Rice).
- **Top Buyers Visualization**: Create a bar chart and integrate a world map to show the top 10 importers.
- **Tariff Comparison Page**: Show a table and a map displaying tariff percentages across countries.
- **Cost Simulator**: Design a tool to calculate landed cost and profit margins, comparing figures between the USA and Brazil based on user input costs.
- **Alerts System**: Display updates on tariffs and news.

### Tech Requirements:
- **Libraries/Frameworks**: React, Node.js (or Flask for backend), Chart.js or Recharts for the charts, and react-simple-maps for the world map.
- **Excel Integration**: Ensure adequate handling of soybean data from Excel files.
- **Design**: Clean and user-friendly UI, optimized for mobile devices and appealing to farmers.

This project has a strict delivery timeframe of one week, so swift and high-quality development is critical. Let me know if you can handle this efficiently!