Complete E-Commerce Web Build -- 2

I need a fully functioning e-commerce website built from the ground up. The site must let me publish a clear product catalog, allow shoppers to add items to a cart, and complete checkout through a secure payment gateway. Everything should be responsive, load quickly, and give me an easy-to-use admin area for managing inventory, orders, and basic promotions.

Core deliverables:
• Product catalog set up with category/filter options
• Shopping cart that updates quantities and totals in real time
• Integration of at least one mainstream payment gateway (Stripe, PayPal, or a comparable solution)

I’m open to the stack you recommend—Shopify, WooCommerce, Magento, custom React/Laravel, or another solid framework—as long as it lets me expand later and keep transaction data secure. Clean code, clear documentation, and deployment to my hosting environment will complete the project.