Create a high- quality, ultra- detailed 8K resolution masterpiece featuring a lion with a fashionable, trendy look. The lion should be wearing black sunglasses, exuding a cool and confident attitude. The scene should be rendered in 3D CGI, showcasing the lion with intricate details, from its majestic mane to the texture of its fur. The background should be a sleek, black backdrop, emphasizing the lion's powerful presence. Incorporate elements of countryside advertising, adding a subtle hint of rustic charm to the overall composition. Ensure the image has a winning photo quality, capturing the essence of the lion's strength and style. This should be a stunning and captivating visual, with a perfect balance of realism and artistic flair. Make sure it trends on ArtStation and stands out as a true masterpiece in the world of digital art