Generate an image  of a futuristic , high-tech  swarm background with  a subtle grid  pattern, featuring  a palette of  deep blues (# 212121)  and purples  (#6c 5ce7 ), with hints  of metallic silver  (#b1 b1b 1) and  neon green (# 34c759 ) accents,  evoking a  sense of innovation , modernity , and professionalism , perfect for  an enterprise-level  PDF presentation.