Create a brand-new Japanese gold coin rebate square promotional poster.
Accurately display the text “お買い物金額の40% コイン還元”“2026.08.26-08.28”“最大8回分”.
Use plum purple, mint green, coral orange, creamy white, and navy blue.
Reorganize the horizontal information into a square format, featuring a massive 40% discount and eight universal gold coin labels as the main elements.
Employ celebratory radial patterns and layered coupons, maintaining comfortable spacing.
All Japanese text must be large and clear.
Do not include any brands, logos, URLs, QR codes, watermarks, or fine print.
Output a high-quality static PNG.
