Create a Christmas-themed digital artwork featuring a Christmas tree formed by countless flickering ultra-fine particles spiraling upward. The outline of the tree should be suggested rather than sharply defined. At the top, add a tiny, brilliant star-shaped light effect. The background should be pure black, with the bottom area subtly illuminated by the glowing particles to create atmosphere. Use particle light effects, twinkling starlight, and gradient diffusion techniques. The style should blend dreamy abstraction with a neon, futuristic aesthetic. Compose the piece with the Christmas tree centered in a symmetrical layout. Near the lower portion, include the handwritten cursive phrase “Merry Christmas,” with a graceful, flowing style. For material expression, simulate the shimmering texture of cosmic stardust in motion, giving the image clear depth and layered lighting. The dark background should contrast with the luminous particle tree at the center. The star on top should stand out with a prominent highlight, while the bottom text should glow softly and harmonize with the particles. In the details, the particle sizes should vary naturally, the spiral lines should be smooth and organic, and the starlight should have a subtle radiating glow. The overall color palette should balance cool and warm tones, conveying both festive warmth and futuristic atmosphere. The typography should be well-balanced with the main visual, artistic and refined.