Englishnitty-gritty
noun
informal
she is no longer involved in the nitty-gritty of running the company:
basics, essentials, essence, essential part, main point, fundamental point, fundamentals, substance, heart of the matter, nub, core, heart, center, quintessence, point, crux, gist, salient point, focal point, nucleus, meat, pith, kernel, marrow, burden;
hard work, slog, toil, labor, donkey work, drudgery;
informal brass tacks, nuts and bolts.