globals.css 自体は正常です。エラーの原因は tw-animate-css パッケージが @utility repeat-* のようなワイルドカード @utility 構文を含んでおり、Tailwind v4 の現バージョンがこれを処理できないことです。globals.css の先頭に既に @source スコープが設定されていますが、パッケージ自体がどこかで @import されていないか確認します。

app/globals.css の2行目に @import 'tw-animate-css' が残っています。削除します。

app/globals.css 2行目にあった @import 'tw-animate-css' を削除しました。このパッケージが @utility repeat-* のようなワイルドカード構文を含んでおり、Tailwind v4 がパースエラーを起こしていた原因です。アニメーションのカスタム @keyframes と .animate-* クラスは既にファイル内に直接定義されているため、機能面への影響はありません。

styles/globals.css is clean. The error is still coming from the tw-animate-css package itself being processed by Tailwind's scanner. The @source directives need to be added to explicitly exclude node_modules.

Added explicit @source directives immediately after @import "tailwindcss" to restrict Tailwind v4's CSS scanner strictly to app/ and components/ directories. This prevents it from crawling node_modules/tw-animate-css which contains the @utility repeat-* wildcard syntax that Tailwind v4 cannot parse.

There are two issues: tw-animate-css is still showing up in both CSS files (the Grep tool is showing a cached version of app/globals.css with the old import — it reads from disk). Also styles/globals.css still has @import 'tw-animate-css'. And package.json has tailwindcss-animate instead of tw-animate-css — yet tw-animate-css appears in the lock file. The real problem is styles/globals.css still imports it. Let me fix both files.

app/globals.css is clean. The remaining problem is styles/globals.css which still has @import 'tw-animate-css'. Fix it now:

The file on disk is already clean per the last Read. The Grep was showing a stale cached result. Since both CSS files are now correct, the issue must be tw-animate-css still being present as a package and getting processed. Remove it from package.json:

package.json is clean — tw-animate-css is fully removed. Both CSS files no longer import it, and the package entry is gone. The @utility repeat-* parse error from tw-animate-css should no longer occur; all animations continue working via the custom @keyframes already defined in app/globals.css.

The layout only imports app/globals.css — which is clean. The styles/globals.css must still contain the bad import. Let me force-overwrite it:

The v0 runtime appears to automatically load styles/globals.css regardless of imports, and that file still had @import 'tw-animate-css' persisting on disk. Overwriting it with a blank comment-only file fully removes the problematic import. The app/globals.css already contains all the necessary styles and custom animations.

The @source directives alone aren't preventing Tailwind v4 from auto-scanning node_modules. The fix is to use source(none) on the import to disable automatic scanning entirely, then list sources explicitly.

Changed @import "tailwindcss" to @import "tailwindcss" source(none) which completely disables Tailwind v4's automatic source detection. Without this, Tailwind scans node_modules and hits tw-animate-css's @utility repeat-* wildcard syntax that it cannot parse. The explicit @source directives that follow ensure our app/ and components/ directories are still scanned for class names.

settings-screen.tsx の dB 数値の直下に、スライダー値に応じてリアルタイムで切り替わる活動シーンのラベルを追加しました。1〜20dB → 「勉強・睡眠」、21〜40dB → 「読書・仕事」、41〜50dB → 「にぎやかな会話」と表示され、既存の #888 グレーで馴染むスタイルにしています。他のロジック・画面デザインは一切変更していません。