Evening Shade: A Sudoku worthy of a Saturday evening dedicated to it

Today's Video:

James Sinclair is back with a puzzle with a 97% rating, and I think that's still underrating this exceptional puzzle. Savour this puzzle!

Link to Play:

Evening Shade by James Sinclair https://tinyurl.com/SudokuSleuthEveningShade

Rules:

Normal sudoku rules apply, and all clues are standard. In addition, cells separated by a knight's move (in chess) cannot contain the same digit.

Region sum lines: box borders divide each blue line into segments with the same sum.

Quadruple circles: a digit inside a white circle must appear in one of the four cells surrounding that circle.

Digits in cells separated by a (smaller) white dot are consecutive.