Can't seem to turn bold off subcategory without turning off bold on top category

[immersive]

I've been try for a few hours to figure this out in CSS. I'm trying to turn off the bold (once selected) from the sub subcategory's but not the top category's without subcategory's. I have found the code that turns it off, but it also turns it off for the main category's that don't have subcategory's. View attachment below:

SPAN.category-subs-parent {
    color: #AC1010;
    font-weight: bold;
    }
SPAN.category-subs-selected {
    color: #AC1010;
    font-weight: bold;
    }

to

SPAN.category-subs-parent {
    color: #AC1010;
    font-weight: bold;
    }
SPAN.category-subs-selected {
    color: #AC1010;
    font-weight: bold;
    }

Any ideas?