Cinematic 3D Lightning in a Video Game Render

Hyper-detailed, cinematic 3D render of a bolt of lightning tearing across a stormy night sky above a ruined fortress, within a realistic fantasy action RPG video game. Use photorealistic PBR materials, advanced lighting, volumetric fog, and dynamic shadows. The lightning should be jagged, electric blue-white with cyan core, crackling with sparks and electrical arcs extending to nearby metal surfaces, creating reflective highlights and heat haze. The scene is viewed from a dynamic camera angle as if the player just triggers a thunderstrike ability. Include post-processing effects: bloom, lens flare, motion blur along the bolt, depth of field focusing on the lightning core, subtle rain particles and wind-swept banners. The environment features textured stone walls, moss, wet surfaces reflecting the lightning, and torn banners snapping in wind. Overall tone is epic, high-contrast, and ready for a video game splash screen or boss encounter.