Modern skyscraper, Chicago cityscape, architecture event, evening time, warm golden light, Willis Tower, glass and steel structure, sleek lines, urban jungle, bustling streets, crowds of people in business attire, laptops and tablets, lecture hall, wooden chairs, stage with microphone, designer's desk with blueprints, pencils and sketchbook, 3/4 composition, shallow depth of field, blurred background, warm lighting, cinematic atmosphere.