现代日本图形设计海报

Gemini Nano Banana Pro Prompt; Modern Japanese graphic design poster of stylized water ripples abstract water surface pattern organic biomorphic shapes flat design vector art style. Monochromatic blue color palette indigo and azure and white high contrast clean hard edges no gradients. Rhythmic flowing composition screen print texture minimalist aesthetic typography elements in Japanese kanji. Shinmura Suisan style fresh and cool atmosphere