About
This skill serves as an exhaustive technical guide for developers building on Apple platforms (iOS, iPadOS, macOS, tvOS, watchOS, and visionOS) up to iOS 26. It covers the entire San Francisco font ecosystem, including variable font axes (Weight, Width, and Optical Size), and provides detailed implementation patterns for Dynamic Type, tracking, and leading. Additionally, it addresses complex internationalization requirements and provides critical troubleshooting advice for maintaining paragraph styles within SwiftUI AttributedStrings.