Create a brand-new Japanese-language thank-you promotional banner collection in square format.
Accurately display the text “THANKS SALE!!”“最大40%OFF”“送料無料”“2026.08.20-08.31”.
Use indigo, coral orange, mint green, warm cream color, and mustard yellow.
Neatly stack three coordinated and unified banner variations on a square canvas.
Employ thick-lined coupon edges, gift icons, and cheerful paper‑shred effects.
All text should remain clear, without using tiny legal‑size print.
Do not include any brands, company names, logos, website URLs, QR codes, or watermarks.
Output a high-quality static PNG image.
