"generate a prototype visualization of eduvr's assets panel in dark mode, featuring a user-friendly interface. the panel should prominently display a library of 3d assets, including the great wall of china, an ancient manuscript, and a realistic dna double helix structure. illustrate the drag-and-drop feature by showing a user seamlessly selecting, moving, and placing these assets into a vr scene. the interaction should convey the simplicity and engagement of the process.