Create a brand-new Japanese-language Monday coupon square poster for advertising and marketing.
Accurately display the text “毎週月曜日”“3点以上で700円OFF”“6点以上で1,800円OFF”“コード M700”“コード M1800”.
Use cobalt blue, coral orange, mint green, cream white, and violet.
Reorganize horizontal content into a square format, using two large stacked coupons.
The Monday theme and the two discount amounts must be prominent and easy to read.
Include a simple calendar and shopping bag icon, along with subtle paper‑art layering.
Do not include any brands, logos, website URLs, QR codes, watermarks, or fine print.
Output a high-quality static PNG image.