전시회 초대장

Square editorial stationery mockup for a contemporary art exhibition invitation. Show one vertical invitation card and a matching translucent vellum sleeve arranged on a neutral gallery plinth. The design combines an abstract cobalt brushstroke, a thin vermilion line, generous white space, restrained typographic placeholder bars, and a small embossed date seal. Add a folded admission ticket and a slim charcoal envelope as supporting pieces. Soft museum skylight, subtle paper grain, refined asymmetrical composition, no readable event names, no brand logo, no watermark.