Apple's approach to interface design and fluid, physical motion, translated for the web. Use when building or reviewing gesture-driven UI, spring animations, drag/swipe/sheet interactions, momentum and interruptible transitions, translucent materials and depth, typography (optical sizing, tracking,

Claude Code skill: replicate a reference Word (.docx) typography onto new content via HTML bridge — browser render → clipboard → Word paste. Append-mode preserves page setup / styles / theme / headers 100%. macOS only.