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--- name: animation-easing-language description: Define animation easing language for premium websites and apps. Use for motion timing systems, easing curves, spring feel, duration scales, stagger rhythm, delay strategy, entrance/exit timing, tactile controls, cinematic sections, and translating luxury, modern, fast, calm, or playful motion words into concrete values. --- # Animation Easing Language ## Use This Skill Use this skill for define motion timing, easing, duration, delay, and rhythm. ## Operating Contract 1. Inspect the existing project before changing code. 2. Identify the motion stack, scroll behavior, component lifecycle, reduced-motion handling, and available verification commands. 3. Keep motion purposeful: clarify sequence, focus, depth, tactility, or product understanding. 4. Follow existing project conventions unless a change clearly improves the result. 5. Run available checks and visually inspect responsive/reduced-motion output when the change affects UI. ## Required Reference Read [references/animation-easing-language-guide.md](references/animation-easing-language-guide.md) before making architectural or visible UI changes with this skill.