Hey, thanks for showing this!
I like how it looks on my phone, it's just the right amount of information for a small screen. I think you could keep some of the orange/beige styling, at least in the title bar.
It's however a disaster on my PC. My favourite thing about HN is how I can read top 25 titles by just opening the website, similar to how old Reddit works. That being said, it's not a problem with your website, the better part of modern design language is enshittified by design and lobotomizes the information density to kindergarten levels.
It is definitely more visually appealing, but not user-friendly at the desktop level.