水彩风二十四节气秋分田野麦田插画背景

插画风格，小清新，秋分主题海报，温暖柔和的色调，金黄与淡绿交织的落叶，晴朗的蓝天，田野中随风飘动的麦穗，远处有几只飞鸟，画面中央有“秋分”两个字，手写毛笔字体，柔和的阳光洒在地面，细腻的水彩晕染效果，干净简洁的构图，高分辨率，适合做海报 英文补充（增强 AI 理解）： watercolor style, fresh and clean aesthetic, autumn equinox poster, warm soft color palette, golden and light green autumn leaves, clear blue sky, wheat fields swaying in the wind, flying birds in the distance, the Chinese characters "秋分" in the center, handwritten calligraphy style, soft sunlight on the ground, delicate watercolor blending, clean and simple composition, high resolution, poster style