Instructions:
• Load a PDB file from your computer or paste a URL (e.g., https://files.rcsb.org/download/1CRN.pdb).
• Use the checkboxes and sliders to adjust the view.
• Try Presets for quick styles.
• Export your model as STL or PNG.
• Use your mouse to rotate, zoom, and pan the 3D view.
• Click Reset View if you get lost.