Comic-Book Superhero Portrait in a Dark Alley AI Image Prompt

A dramatic comic-book portrait of a stern male superhero in a dark emerald suit with a high collar, a sleek black-and-green eye mask, and a glowing circular chest emblem. He stands in a shadowy urban alley at night, shown from a slightly low angle in a tight upper-body shot. His hair is short, dark, and windswept, with a strong jawline and intense expression. The lighting is moody and cinematic, with warm amber highlights on one side of the face and cool green reflections across the suit. The background is mostly black with tall vertical structures and a few bright rectangular lights, creating a gritty nocturnal city atmosphere. Style: modern digital comic illustration, sharp inked contours, painterly shading, subtle texture, rich contrast, heroic yet brooding mood, polished graphic-novel cover art quality.