Flat 2D front book cover, straight-on, no mockup. Minimalist academic medical design. Off-white background with thin charcoal border. Center: three overlapping transparent blue circles + bold vertical gray line. Text: top "A Clinical Guide", middle "CLINICAL SYNDROMES", subtitle "Diagnosis, Differential & Comorbidity", bottom "In Complex Cases". Flat vector, no textures, no gradients, no shadows. No humans, no medical equipment. Pure geometric concept. Scholarly clinical style.