Cool use of the fixed header/navigation and more interactivity on the sub pages. I can take or leave the dark background but it looks like the product itself is in a black container to it seems a very fitting choice.
Understanding Mental Models for Better Web Design Practices
How can understanding mental models transform your web design process? These cognitive blueprints shape perceptions and decisions, leading to intuitive, user-centered designs.
i am subzero website is awesome, try the product its even better!