Transformer architecture explained, modern conference room, futuristic interior design, sleek wooden tables, minimalist chairs, large glass windows, cityscape background, afternoon sunlight, subtle gradient shadows, 3/4 composition, softbox lighting, shallow depth of field, male lecturer, mid-30s, casual business attire, glasses, short brown hair, enthusiastic gestures, whiteboard markers, complex diagrams, neural network illustrations, colorful flowcharts, laptop screens, projector screen, wooden floor, ambient noise, realistic rendering.