question: is there actually anywere in the torah that states to specific obligations? no! all we find are pesukim that allude to the actual requirements. so the basics are all derabanon. which is just as important. (if you disagree PLEASE don’t let us know about it. we’re not interested.)
way back, some things just didn’t exist. women did not wear pants. period. so obviously when the style came around, rabbonim decided to assur it. there is no clear-cut “list” because new things are constantly being added.
just because our generation is numb to the concept, doesn’t make it muttar. it just makes the world a place of idiots.