Custom Shopify Theme Build

I need a fully custom Shopify theme created, set up and installed on my store from start to finish. Speed, clean code and smooth mobile responsiveness are non-negotiable, and the design must feel professional out-of-the-box so I can launch without relying on heavy third-party apps.

Core features to bake directly into the theme:
• Robust product filters that update results instantly without page reloads
• Built-in customer reviews with star ratings and schema for SEO
• Seamless live-chat support area that matches the visual style of the site

Deliverables
1. Pixel-perfect Shopify 2.0 theme coded in Liquid, HTML, CSS and modern JavaScript (no unnecessary libraries).
2. Theme settings panel that lets me switch colors, typography and home-page sections with a few clicks.
3. Installation on my Shopify storefront, including transfer of all assets and a quick walkthrough on how to maintain it.
4. Final QA pass for cross-browser and mobile compatibility plus confirmation that product filters, reviews and chat all work in a fresh, app-free install.

Reference the attached images, the theme should be identical to the mock up