Custom HTML/CSS E-Commerce Build

I’m launching a new online store and want it coded entirely in vanilla HTML, CSS and straightforward JavaScript—no WordPress, no Wix, just clean, lightweight files I can host anywhere.

Core functions I need implemented:
• Shopping cart that updates totals in real time and carries over to checkout
• Secure user-account creation with basic profile management
• Product-level review and rating system, visible on each item page

I’ll provide a structured CSV with product details and images, so part of the job involves importing that data accurately into the site’s catalogue. All pages should be responsive, load quickly, and be easy for me to extend later.

Hand off the finished source code, a brief README explaining file structure, and a short screencast or written walkthrough showing the cart, sign-up flow and review submission working end-to-end. Once I can replicate those three flows locally without errors, the project is complete.