Center: A simple light bulb outline filled with gradient blue, symbolizing the radiance of knowledge. Surrounding area: Several lines extend outward from the light bulb, gradually dispersing into multiple nodes, each of which is a small circle connected by thin lines, forming a simple but clear network structure representing the knowledge graph. Bottom: There is a small gear below the icon, which is dark gray in color and represents the management and technical support of the system. Background: The entire icon is placed within a transparent circle to maintain a neat and professional design.