Advanced AI Prompt for Raymarched Volumetric Hero Backgrounds

Act as an Advanced WebGL Raymarching Specialist. Develop a high-performance fragment shader utilizing Raymarching techniques to mathematically render an interactive, 3D [SHAPE_TYPE] (e.g., an infinite mandelbulb or a twisting torus) directly within a 2D quad for a hero section. Integrate complex Signed Distance Functions (SDFs) featuring a [COMPLEXITY_LEVEL] degree of fractal folding and domain repetition. Implement a volumetric, neon glowing aura strictly adhering to the [GLOW_COLOR] hex code. The code must be ruthlessly optimized for a [PERFORMANCE_TARGET] (e.g., 60fps on mobile) by strictly capping the ray loop iteration count and employing spherical bounding volume checks before calculating the dense fractals. Implement a custom Blinn-Phong lighting model with sharp specular highlights.