Minimalistic Shopify One-Product Site

I'm looking for a simple and clean one-product website, similar to https://myherbkw.com/en.

Requirements:
- Built on or integrated with Shopify
- Fully responsive (mobile + desktop)
- Includes global payment methods (credit/debit cards, Apple Pay, PayPal, etc.)
- Available in English
- Ready for international shipping
- Fast, minimalistic, and easy to navigate
- Optimized for conversions and performance
- Related products section on the product page

Product details, content, and images will be provided.

Ideal Skills & Experience:
- Shopify development
- Responsive design
- E-commerce payment integration
- SEO and performance optimization
- Experience with minimalistic design