Create a mesmerizing dark fantasy portrait of Medusa, reimagined with a sinister and captivating presence. Her hair is composed of incredibly realistic snakes, writhing with lifelike detail. Her skin is a deep pitch-black, fractured by glowing, fiery red cracks that exude an aura of danger and power. Her piercing, icy blue eyes dominate the composition, drawing viewers into her mysterious and malevolent essence. Rendered in ultra-high-definition, the artwork highlights every intricate detail, from her sharp facial features to the texture of her glowing cracks and snake-like hair. This 3D conceptual masterpiece blends dark mystique with photorealistic artistry.