How to highlight text present in the last parenthesis and first colon from start with grep in Adobe InDesign?

I am using Adobe InDesign. I want to apply character style named bold using grep styles/nested styles but only until the first : from the start and last parenthesis.

The grep I am using is making all the parenthesis bold. (.+?)$ is the code I used.

Here is the sample text:

Trans of line: This is the (translation) of the line taken from the book (Tintin) comic book. Also take care of colon: coming in the text. (Tintin-Cigars of Pharoah)

Second Scenario:

Translation: This is the (translation) of the line taken from the book (Tintin) comic book. Also take care of colon: coming in the text. (Tintin)