Portrait of Superman adorned in cybernetic heavy armor with a futuristic helm, showcasing a sci-fi aesthetic with glowing intricate designs. The full-body digital painting displays elegance and high detail, inspired by the craftsmanship of artists like Artgerm, Greg Rutkowski, and Alphonse Mucha. The artwork embodies a smooth and sharply focused illustration style fit for concept art platforms. Avoid low resolution and ensure a high level of detail without unwanted artifacts, distortions, or disproportions, maintaining a clear and compelling representation of the subject.