Create a brand-new vertical promotional weekly poster in English, intended for advertising and marketing.
Accurately present the text “SALE WEEK”“UP TO 40% OFF”“STARTS AUGUST 10”.
Use a color palette of deep cyan, coral orange, warm cream, and lavender purple.
Employ cut-style serif headlines, stitched badges, and large-scale numerals to establish visual hierarchy.
Add soft paper textures and subtle shadows to create an editorial design feel.
Discount information must stand out, with dates clearly legible.
Do not include any brand logos, trademarks, website URLs, QR codes, watermarks, or fine print.
Output a high-quality static PNG image.