扁平化3D渲染简约现代风科技感云存储文件管理设备连

minimalist icon design, blue and white color scheme, four icons, top left icon: a folder connected to three small folders, top right icon: a cloud with up and down arrows, bottom left icon: a desktop computer and a laptop connected by a line, bottom right icon: a folder with a gear inside, clear and intuitive, conveying information about data storage, cloud computing, device connection, and settings management