My suggestions:
* Kill the padding/margins, it's pretty for demos or certain cases but I want to be able to see more information, heavy padding/margins have no place in search results.
* Shrink the search bar to the upper left like every other search engine. Keeping it centered with tons of padding wastes space. Take your logo and put it to the left of the search field, take the buttons and put them to the right. On my screen you are burning a little over 500px of vertical space with things that don't matter, the results matter.
* Shrink your "regular" search results to be half the width of the screen (on desktop, something like a max of 700, Google uses ~640 as does Ecosia). Use the space to the right to show your AI/ML results. This means no content will jump around and people can more easily read the results, full-width is very hard to read. Also shorten the "description" under the links. 2 lines max (at 640px width).
* Either don't ask "Was this answer helpful?" (use hints like: Did they click the link? Did they leave the site after seeing the results?) OR don't make it move the content (hold the space empty if you must animate it in, just don't let the content shift multiple times after doing a search).
Here is your default result for "this is a test" search query: https://cs.joshstrange.com/oKbz6G
Here it is with a bunch of padding/margins removed: https://cs.joshstrange.com/VEVXGh
Yes, I removed the logo/buttons because that was faster than moving them to the left/right of the search but the end result is the same. In my tightened up version you can fit 8+ result links where the initial version could only show 3, also all the results are easier to read.