Horizontal Arbor Day poster, flat vector illustration, geometric style, clean lines, solid color blocks. Bright spring green color palette, minimalist background with geometric clouds and sun. Left side: large bold Chinese characters "植树节", English "3.12 ARBOR DAY" in a green frame, slogan "你一棵我一棵，山野绿油油". Right side: two cartoon characters planting a tree on a green hillside, a woman watering with a blue can, a man standing with a shovel, flat style forest in the background. --ar 16:7 --style flat --s 280 --v 6.0 --no gradients

2.1

21:9  /  1195 * 512

图片·4.0

2026-03-06 16:35