Bright, vibrant square channel avatar cover with prominent 3D stylized text reading 'Мульти-Город'. In the background, a colorful whimsical cartoon city with charming curving skyscrapers, playful fairy-tale architecture, fluffy clouds, and a rainbow under a cheerful sunny sky. In the foreground, a lively group of cute, friendly fairy-tale and cartoon characters (cute talking animals, smiling fairy creatures, cheerful boy and girl characters) happily waving and greeting the viewer. High quality 3D Pixar Disney animation style, rich vivid colors, soft warm lighting, festive and welcoming atmosphere, perfectly centered square composition, 8k resolution.
