Vibrant E-Commerce Store Design

I’m launching an online store for physical products and need a bright, energetic web presence that feels as lively as the items I sell. The look should be vibrant and colorful while still guiding shoppers smoothly from landing page to checkout on any device.

Beyond the visual flair, two features are essential:
• A smart product-recommendation section that automatically suggests complementary items on product and cart pages.
• Real-time live-chat support visible site-wide so customers can ask questions without breaking their shopping flow.

Here’s what I’d like handed over:
1. Custom design of all core pages (home, collection, product detail, cart, checkout, account) in a responsive, mobile-first layout.
2. Front-end build plus back-end setup on whichever platform you recommend (Shopify, WooCommerce, Magento, etc.)—tell me your preference and why it suits this project.
3. Integration and configuration of the recommendation engine and live-chat widget, fully tested across modern browsers and devices.
4. A short hand-off session showing me how to add products, manage recommendations, and monitor chat.

Acceptance criteria: pages load in under three seconds on 4G, chat works on every page, recommendations pull from the live catalogue automatically, and no critical WCAG 2.1 AA accessibility errors remain.

When you reply, please include two or three vibrant e-commerce sites you’ve built and the tech stack you’d use for mine so we can get started right away.