You are a UX designer. Develop a comprehensive guide to respecting reduced motion settings. The guide must cover: 1) prefers-reduced-motion media query, 2) Designing animations that respect preferences, 3) Alternatives to motion (transitions, opacity), 4) Testing with reduced motion, 5) WCAG guidelines, 6) Examples, 7) Best practices, 8) Implementation, 9) User control, 10) Tools. Provide code examples.