象牙色背景上的簡約康乃馨海報，點綴日文書法與母親節快樂字樣

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Create a minimalist vertical Mother's Day wallpaper poster on a warm ivory paper background with soft natural shadows and lots of negative space. In the center, arrange a delicate bouquet of carnations with 5 visible flower heads: 1 large pale pink carnation near the upper left, 1 closed pale pink bud at the upper center, 1 peach carnation in the middle, 1 soft yellow carnation on the right, and 1 pink carnation near the lower center; include slender green stems, narrow leaves, and 3 small green buds, rendered as realistic pressed-flower photography with gentle studio lighting. Overlay very large elegant black Japanese calligraphy reading かのん across the upper-middle of the bouquet, then place a refined high-contrast serif headline across the lower-middle reading HAPPY MOTHER’S DAY, with thin Didot-style letterforms and graceful curves. Add 4 small letter-spaced message blocks in black: top left says To the most wonderful mother, thank you. With all my love., top right says MOTHER’S DAY THANK YOU ALWAYS., bottom left says You are my love, my strength, my everything., and bottom right says Wishing you a beautiful day filled with love and happiness.. Keep the composition airy, elegant, feminine, modern Japanese editorial style, with crisp typography, realistic flower texture, subtle shadows, and a premium greeting-card aesthetic.