Generate a simple flat vector hand icon for a rehabilitation game UI. The hand should represent a full-hand grip/control pose, with all fingers visible in a simplified grouped form. Use a white fill and a clean blue outline. Rounded edges, minimal detail, no shading or only very subtle flat shading, no realism, no background. The icon should look like it belongs in a clean 2D medical/therapy game interface. Center the hand, keep it isolated, and make it suitable for export as SVG.

The image shows a black and white drawing of a hand on a white background. The hand is drawn in a sketch-like style, with the fingers spread out and the palm facing upwards. The palm is slightly curved and the fingers are slightly spread apart, giving the impression that the hand is reaching out. The background is a plain white, allowing the hand to stand out.