粉紅與白色雲朵下，綠色山丘上聳立著一棵像素藝術風格的樹

Create a pixel art image of a serene landscape with a single Huge leafy tree atop a green hill. Use vibrant green shades for the rolling grassy fields, forming soft organic terrain. The sky should feature a gradient from deep blue at the top to pink and purple near the horizon. Include a dramatic, voluminous cloud in pink and white, suggesting sunrise or sunset. The tree should be a dark silhouette contrasting with the vibrant sky, acting as the focal point. Use a limited color palette typical of pixel art, with dithering for smooth transitions. Emphasize tranquility through careful color choices and pixel-perfect details.