A 42-year-old patient has hepatosplenomegaly and asymmetric enlargement of lymph nodes in the neck area (painless, medium density). Histology of a lymph node revealed giant cells with a large multilobed nucleus, textured nucleoli, and wide eosinophilic cytoplasm (Reed-Sternberg cells), as well as cells with two "mirrored"nuclei, each of which contains an acidophilic nucleolus surrounded by a clear zone ("owl’s eye"). What is the most likely diagnosis in this case?