On morality

I listened to the rabbi’s interesting series of lessons on the subject of Halacha and morality. It was clarified in the lessons that morality also has a divine source, and therefore the commitment to it is equivalent to the commitment to Halacha. In light of the words of the Book of Principles, Part 1, Chapter 8, on “Polite Religion,” I wanted to ask:
1) If we indeed say so, that the halakhic obligation is indeed equivalent to the obligation to the halakhah, what morality will bind us? Everything that seems to us now as moral is equivalent to a halakhic source? And after all, tomorrow it may become clear to us that what we considered moral until now is nothing more than a moral flaw.
2) In most cases, there is no precise definition of the most correct moral act, especially when one gets down to the details of time, place, and context. (I mean, every person with moral awareness is aware of moral values ​​such as kindness, truth, and the like, but most of the time he cannot decide precisely and objectively when one should support one action or another in the context of those values. For example, a person who is late for work and sees an old woman in front of him who is having difficulty crossing the road, should he help her or not?) If so, how can we decide what the moral act is when one gets down to the practical details? (This is in contrast to the halakha, which gets down to the details of the exact details and gives definitions of time, place, and context.)