A beautifully decorated Christmas tree standing outdoors in a snowy landscape at night. The tree is adorned with multicolored ornaments—red, blue, purple, green, and gold baubles—and illuminated with warm white string lights. A glowing star tops the tree. Snow covers the branches, adding a festive touch. In the background, other snow-covered trees are decorated with lights, and a vibrant aurora borealis fills the sky with shades of green, purple, and pink. Snowflakes gently fall, enhancing the serene and magical atmosphere. Portrait orientation, cinematic lighting, winter holiday fantasy style, perfect for mobile wallpaper.