卡通风世界地中海贫血日宣传元素海报

masterpiece, best quality, minimalist flat design vertical poster, World Thalassemia Day theme, split background: upper half off-white, lower half bright sky blue, large 3D-style red awareness ribbon in the center, with a red and white molecular structure graphic inside the ribbon, vertical Chinese text at the bottom center: main title "世界地中海贫血日", subtitle "关爱地贫患者，传递生命希望" on the right, "传递生命希望" on the left, clean composition, simple geometric style, high resolution, print-ready