Create a brand-new Korean-language monthly happiness discount vertical poster.
Accurately display the text “8월에 행복해”“40% SALE”“50% SALE”“2026.08.01-08.31”.
Use plum purple, coral orange, mint green, cream white, and navy blue.
Employ rainbow motifs, four-leaf clovers, and two coupon labels to form a bright, vertical design.
The Korean headline and discount information must stand out and be clearly legible.
Incorporate soft 3D typography and a lively retail atmosphere.
Do not include any material watermarks, brand names, logos, website URLs, QR codes, or random small text.
Output a high-quality static PNG image.