{"type":"Japanese Udemy course promotional thumbnail / social media banner","aspect_ratio":"wide 16:9, 1200x675 style","overall_style":"high-conversion online course ad, premium dark navy and black digital workspace background, glowing gold typography, cinematic lighting, sharp commercial compositing, dramatic contrast, bokeh particles, subtle tech UI squares and cloud/file icons","main_subject":{"position":"right third","description":"adult presenter from waist up wearing bright blue medical-scrub-like top, face intentionally blurred or covered by a soft rectangular mosaic for anonymity, curl
