If you like a CSS sunrise over some hills, you'll probably like my friend's website [1] and write-up [2].

[1] https://grady.dev/

[2] https://grady.dev/projects/sunrise/

The end result has hardcore color banding but I love how much thought went into this.

The old-school way to deal with banding is with grain (a primitive dithering), I wonder if a semitransparent overlay of white noise would help here. Thanks for the link!

Edit: in fact if you zoom into enroute's site you'll see they are using some noise.