科技风3D渲染蓝色粒子光效背景素材

3D rendered abstract artwork, gradient blue background with subtle white light spots, main subject is a flowing light band composed of numerous tiny light points, wave-like dynamic effect extending from bottom left to top right, surrounded by light points and halos, creating a mysterious and dreamy atmosphere, conveying a sense of exploring the unknown and yearning for freedom, with a futuristic and technological feel， the wave not so obvious