is the requirement of being in a lightly obscured area to gain the benefit of the Nature’s Mantle works in a heavily obscured area?

I want to make sure I’m not creating a problem by allowing heavily obscured areas to meet the requirement of being in a lightly obscured area for the Nature’s Mantle benefit of hiding as a bonus action. Since it is a more obscured area I intended to allow it but I’m not sure if I should since it is not explicitly written.

thanks again.