Create an original portrait 3:4 English mid-year sale poster in hot pink, red, and cream, with a bold stacked headline, two compact offer panels, a coupon code, and a small shop button. Text: “MID YEAR BIG SALE”, “GET 1 EXTRA 4%”, “GET 2 EXTRA 8%”, “CODE: MID8”, “SHOP NOW”. Use two balanced shine accents only. No brand, watermark, QR code, website, non-English text, or random tiny text.