카톡 쿠폰

Square mobile marketing mockup showing a cheerful digital discount coupon card inside a generic Korean chat app interface on a smartphone. Warm yellow and charcoal color palette, rounded coupon with perforated edge, gift box icon, large blank discount area represented by abstract shapes, clear call-to-action button without readable words, friendly small-business visual style, clean product UI presentation, no real app logo, no legible text, no watermark.