Use for Tailwind v4 styling: add/fix classes, configure or migrate Tailwind, use tailwind-variants, or tw-animate-css.

Tailwind CSS Style within the installed Tailwind version, existing design tokens, component patterns, and product context. Authority and Defaults Inspect package versions, CSS entrypoints, theme declarations, shared components, class merging utilities, and nearby UI before editing. Those are authoritative. Apply this catalog's preferences only where the project is silent. Read [references/coding preferences.md](references/coding preferences.md) for that fallback style. Prefer existing semantic tokens and components over arbitrary values, new colors, or one off utilities. Preserve responsive states, interaction states, accessibility, and dark mode conventions. Do not add decorative UI or redesign beyond the request. Use CSS Modules only when the behavior is materially clearer than utilities; preserve any project specific Tailwind reference mechanism. Routing For v4 configuration, migration, removed utilities, variables, gradients, or CSS first directives, read references/tailwind v4 rules.md after confirming v4 is installed. For version specific behavior that may have changed, consult the current official documentation matching the installed version. Treat the local v4 reference as a decision checklist, not an exhaustive substitute for the docs. For component variants or slots with tailwind variants , read references/tailwind variants.md . For tw animate css , read references/tw animate css.md . For Tailwind ESLint integration, read references/eslint.md . Do not apply v4 syntax to an older project merely because this skill targets v4. Use documentation matching the installed version, and migrate only when the request includes migration. Workflow 1. Define the visual outcome and affected states from the request and product context. 2. Reuse local tokens, spacing, typography, breakpoints, components, and variant conventions. Make the smallest class/config change that achieves the outcome. 3. Keep class names statically detectable. When values select styles, map them to complete class strings and verify that Tailwind scans every relevant source location. 4. Run the repository's relevant lint/type/build checks. 5. Render the affected screen or component at representative viewport sizes and inspect it visually, including changed interaction and theme states. When JavaScript or a component library transforms markup, inspect the final DOM and verify that selectors and state behavior still match. Fix visible regressions before completion. Completion requires code checks plus rendered inspection; textual class review alone is insufficient. When source detection or generated class names changed, run the real Tailwind build and verify that the expected utilities are present. Finish with 🎨 Tailwind — ✅ styling updated after edits or 🎨 Tailwind — 🔎 inspected, no files written for read only work, a compact viewport/theme/changed states/result table, and separate 🧪 Code checks and 🔎 Rendered inspection evidence. Add ⚠️ Remaining only when non empty. Do not inject decorative emoji into source classes, product copy, or snapshots unless the request calls for it; keep commands and diagnostics exact.

tailwind-css