This interface is very well done, great job!

Also you broke the back button.

Finally, it's not intuitive where to click to get started.

While it's a fun experiment for a personal website seems a bit impractical for a marketing page for a tool that is not always bought by engineers.

Also there are non-removable bars on top and bottom of the page, even if window is "maximized".

Not to for serious use. But it is clever, interesting and fun to play with.

But where is the web browser? To be complete, it needs a web browser. :)