Digital Castle with Glowing Heart Suspended Above Twilight City

3D rendered digital artwork employing volumetric particle effects to construct massive heart formation from thousands of individual red geometric units. Gothic castle architecture positioned right frame featuring illuminated windows, pointed spires, attached red staircase pathway. Atmospheric perspective applied across cityscape backdrop with misty purple-pink gradient. Heart particles scatter across composition with bird silhouettes. Layered clouds rendered with warm-cool color temperature gradients. Technical execution combines particle systems, volumetric lighting, procedural materials, depth-of-field effects.