visionOS Design Guidelines Comprehensive design rules for Apple Vision Pro based on Apple Human Interface Guidelines. These rules ensure spatial computing apps are comfortable, intuitive, and consistent with platform conventions. --- 1. Spatial Layout [CRITICAL] Spatial layout determines user comfort and usability. Poor placement causes neck strain, disorientation, or inaccessible content. Rules SL-01: Center content in the field of view. Place primary windows and content directly ahead of the user at eye level. The comfortable vertical viewing range is approximately 30 degrees above and belo…