A photorealistic fantasy concept art of a melting heart composed entirely of radiant light, set against a backdrop of deep red to black gradient. The scene is imbued with dynamic, cinematic lighting that casts intricate patterns of shadows and illumination. The image embraces an incredibly detailed and creative design, reminiscent of the styles of Artgerm, Greg Rutkowski, Peter Mohrbacher, and Guweiz. Delicate wisps of ethereal smoke rise from the heart, while luminescent veins pulse with energy, giving an otherworldly feel. The atmosphere is charged with emotion, immersing viewers in a visual symphony of light and shadow.