Small Hints In The Fog

Today's Puzzle:

Here is another grid that is entirely covered in fog. Thick fog that really requires you to pay attention to the small hints hidden in it. A very aptly named puzzle!

Link to Play Along:

Small Hints In The Fog by Leonhard Kohl-Lörting https://tinyurl.com/SudokuSleuthSmallHintsInFog

Rules:

Normal Sudoku rules apply.

The grid is covered by fog. Enter correct digits to reveal clues. No guesswork is required.

Clues outside the grid are the sum of the first X cells from its corresponding direction, where X is the value of the first cell inside the grid. Not all clues are given.

Black dots separate two digits which are in the ratio 1:2. White dots separate consecutive digits.

Digits on arrows must sum to the digit inside its corresponding circle.