futuristic app icon, centered composition, bold and readable design, isolated object, transparent background, no environment large solid black obsidian cube, thick and clear geometric shape, sharp straight edges, no thin details, strong silhouette, high visual weight, centered and dominant in frame inside the cube: bright concentrated cold blue quantum energy core, strong neon cyan glow, visible neural network connections but simplified (not too detailed), glowing internal energy field, strong light contrast minimal UI icon design, designed for small size readability, bold shapes, 3D polished render, high contrast lighting, cyberpunk sci-fi aesthetic, no text, no logo Ver mais