It was loose when we moved in, and broke completely a couple of weeks later.
I looked up a video on YouTube how to fix it, and after initially thinking the hinges only came with an entire new seat, found that you could order a “fixing kit” which had all of the essential parts seen in the video.
The result is satisfactory.
Nice. I need to do that. I have a toilet with a similar need and even bought the kit, but it got “cleaned up” …. Somewhere. Now it’s a much bigger chore because I need to find it and don’t have any clues