简约大气大暑二十四节气清凉海报

early summer traditional aesthetic, harmonious nature scene with cultural symbols, Chinese ink painting style, soft wash painting, misty atmosphere，自然：lotus pond（荷塘）, fireflies（萤火虫）, fan-shaped bamboo leaves（竹叶）, water ripples（波纹） 物象：watermelon slices（西瓜）, porcelain tea set（青瓷茶具）, silk fan（团扇） 人文：Chinese pavilion（凉亭）, 无文案 光影：golden sunlight filtering through leaves, dappled shadows 色调：cool cyan & emerald green dominant, warm amber accents