Serpentine Streamers

Lockout Lines turned 2 years on August 12th! Happy (a little late) birthday! When Nala noticed that there was reason to celebrate, she happily picked the best gift she could find and was on her way to the party immediately. Will the Lockout Lines like her gift?

Normal Sudoku rules apply: Place the digits 1-9 in every row, column and box exactly once each.

All lines are lockout lines. Digits along a lockout line must not be equal to or between the digits on the diamond ends of the line, which have a difference of at least 4. Each line has at least one line segment between it's endpoints. Each line also has its own color. Lines of the same color are connected.

Digits in killer cages sum to the number in the top left corner and cannot repeat within their cage. Each killer cage has its own color. Cages of the same color are connected.

Additionally the grid is partially covered in fog. Placing correct digits will clear the fog from surrounding cells, possibly revealing more clues.