I keep coming back to this idea as the (albeit ideal) future of the web. HTML keeps morphing and changing to fit the increasingly complex requirements of modern web apps. I mean the W3C spec is 114 million words (1). I think that web apps as a concept are a good idea, but I just can't believe that HTML/CSS/JS are the best technologies to fill that out. I'd love to see someone tackle a new, "micro-sized app format", with a much simpler document format, and something like a FORTH as a scripting language. Uxn (2) and Decker (3) are good examples of this, but obviously a proper implementation would have to be built with the full range of possible UI and accessibility in mind, not just monochrome bitmap displays.
A web standard so simple, anyone can implement it!
One can dream...
(1) https://drewdevault.com/2020/03/18/Reckless-limitless-scope....
(2) https://100r.co/site/uxn.html
(3) https://internet-janitor.itch.io/decker
EDIT: There is Project Gemini (https://geminiprotocol.net/), but it doesn't support styling or scripting.