I want to publish a dedicated web page tool that mirrors the look-and-feel of the reference link (https://mytodayearning.com/compound-interest-calculator-usa/) while being entirely original in code and copy. The page needs two tightly-linked parts: 1. Interactive calculator • Runs entirely in the browser (JavaScript, React, Vue, or plain JS—your call). • Accepts principal, rate, time, and compounding frequency and instantly updates results. • Displays a clean line or bar graph that visualises the growth over time. • Generates a downloadable PDF or CSV report summarising inputs, yearly balances, and totals. • Includes a lightweight sign-up / log-in flow (email + password or social) so users can save their calculations for later. 2. Long-form explanatory article • Similar structure and length to the sample page, but written from scratch in fluent, SEO-optimised English. • Explains what compound interest is, provides real-world examples, and guides readers on using the tool. • Headings, meta tags, and internal anchor links ready for WordPress or any standard CMS. I’ll supply hosting and domain; you supply all front-end code, a simple back-end (Node, PHP, or Python) for authentication and PDF/CSV generation, plus installation instructions so I can deploy in one step. Please outline: – Frameworks/libraries you plan to use – Time required for a functional prototype and for final polish – At least one live example of a calculator or data-visualisation project you’ve built Clean code, responsive design, and clear documentation are must-haves.