Modern architect, male, 35-40yo, bespectacled, short brown hair, clean-shaven, black turtleneck sweater, dark blue jeans, holding a large A3-sized design board, standing in front of a whiteboard filled with diagrams and notes, pointing at a specific section, university lecture hall, bright fluorescent lighting, minimalist modern interior design, polished concrete floor, rows of wooden desks, steel chairs, floor-to-ceiling windows, panoramic view of the cityscape outside, soft natural light pouring in, shallow depth of field, 3/4 composition, high contrast, cinematic ambiance.