Create a brand-new Korean-language new-start discount campaign vertical poster.
Accurately display the text “새로운 시작을 위한 할인혜택”“15% COUPON”“2026.08.20-08.31”.
Use cobalt blue, coral orange, cream white, mint green, and plum purple.
Feature an open gift box, a ribbon-tied lid, and one eye-catching coupon.
Add small flowers and celebratory ribbons while keeping the layout clean.
Korean and English should be centered and remain sharp and clear.
Do not include school names, brand names, logos, website URLs, QR codes, watermarks, or tiny text.
Output a high-quality static PNG image.