There is a reason why there exists an entire "landing page industry" because there is a level of science and art mixed into building it.

If you think it's visually stunning without being informative or just pure information without attention-grabbing visuals, then you'll fall on either side of the hill.

Then there are other factors including your target audience, copy-test, sentiment, color combinations etc.

I've build many landing pages in my life time and I am not sure if I still get it. If you are optimizing for HN-audience, I would say it also requires a different strategy (e.g. demo first without signing up?)