GPT Image 2· Image
Create a polished horizontal Korean online class web banner, 16:9. Main headline must clearly read: 'AI 디자인 클래스'. Subtitle: '프롬프트부터 결과물까지 한 번에'. Use a strong educational platform layout: left side bold text and CTA button '수강 신청', right side stacked lesson cards with small image thumbnails, cursor arrow, and progress bar. White background, electric blue and lime accents, modern SaaS-style typography. Clear, commercial, high-conversion banner design, not a poster, not cluttered.