What problem does it solve? Tailwind CSS v4 introduced breaking changes in imports, tooling, utilities, and variants, and developers often lack accurate, up-to-date official documentation when answering configuration or migration questions. This Skill provides a locally synced snapshot of the official Tailwind v4 docs plus an engineering playbook so answers are grounded in real documentation. ## Core Features & Use Cases - Local docs snapshot: Syncs the official tailwindcss.com documentation into references/docs/ with an index for fast topic lookup. - Migration guidance: Covers v3-to-v4 upgrade checks including new import syntax, tooling packages, utility renames, and variant behavior. - Engineering playbook: Provides implementation, refactor, and review heuristics for tokens, custom utilities, component classes, and @apply usage. - Use Case: When upgrading a project from Tailwind v3 to v4, ask the assistant to verify breaking changes; it loads the upgrade guide and gotchas reference to flag issues like @tailwind directive removal and renamed utilities. ## Quick Start Ask the assistant to initialize the Tailwind docs snapshot and then explain how to migrate your project from Tailwind v3 to v4.