My Shopify store is running well, but I need a couple of very targeted functionality updates. First, each product page must show a clear “Delivery Fee” element. Whether it’s a dynamic calculation pulled from Shopify’s shipping settings or a simple fixed-fee field, I want the fee visible right alongside price and variants so customers never have to hunt for it. Second, the site’s performance needs tightening. Page-load times on product pages in particular are lagging, and I’d like you to optimise theme code, assets and Liquid snippets so those pages score noticeably higher in speed tests without breaking existing styling or apps. Deliverables • A tested, theme-level solution that adds the Delivery Fee feature to every product page and works with both desktop and mobile views. • Performance optimisation changes that reduce product-page load times and pass standard Shopify speed checks. Please keep all existing design and content intact; this is purely a functionality and speed pass. Liquid, Shopify Theme Customiser and lightweight JavaScript are all fair game—as long as the code is clean and well documented so I can maintain it later.