Create a brand-new Korean summer coupon festival long vertical poster.
Accurately present the text “썸머세일 페스타”“COUPON 15%”“COUPON 35%”“1+1”“2026.08.01-08.15”.
Use deep cyan, coral orange, cream white, violet, and yellow.
Draw a poolside scene, three large floating coupons, and abstract summer props.
Korean and English texts must be boldly separated into distinct sections and optimized for mobile viewing.
Adopt cheerful three-dimensional illustrations with generous spacing.
Do not include any material watermarks, brands, character IPs, logos, website URLs, QR codes, or tiny text.
Output a high-quality static PNG.
