A 58-year-old man with type 2 diabetes mellitus and hypertension presents for routine follow-up. His lipid profile shows: Total cholesterol 280 mg/dL, LDL-C 180 mg/dL, HDL-C 35 mg/dL, triglycerides 320 mg/dL. He is already on atorvastatin 40 mg daily but remains at high cardiovascular risk. His liver function tests and creatine kinase are normal. Which of the following is the most appropriate next step in management?