diff --git a/.changeset/lowercase-style-tags.md b/.changeset/lowercase-style-tags.md
new file mode 100644
index 000000000000..12e01671afc4
--- /dev/null
+++ b/.changeset/lowercase-style-tags.md
@@ -0,0 +1,5 @@
+---
+'astro-vscode': patch
+---
+
+Fix syntax highlighting for lowercase component tags that start with "style" or "script".
diff --git a/AGENTS.md b/AGENTS.md
index 991ea5b448e4..6fa7e6a74b66 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -37,18 +37,12 @@ Note: Edits to source files take effect after rebuilding the package via `pnpm b
 
 # Running Tests
 
-- Run `pnpm test` in workspace root or package directory to run full test suite (can be slow!)
-- Integration tests live in special `packages/integrations` folders.
-- Example: `pnpm -C <package-directory> astro-scripts test` - Run a single package test suite
-- Example: `pnpm -C <package-directory> astro-scripts test "test/actions.test.js"` - Run a single test file
-- Example: `pnpm -C <package-directory> astro-scripts test "test/**/*.test.js" --match "CSS"` - Run specific tests matching a string or regex patterns
-- Example: `pnpm -C <package-directory> astro-scripts test "test/{actions,css,middleware}.test.js"` - Run multiple test files
-- Key flags:
-  - `--match` / `-m`: Filter tests by name pattern (regex)
-  - `--only` / `-o`: Run only tests marked with `.only`
-  - `--parallel` / `-p`: Run tests in parallel (default is sequential)
-  - `--timeout` / `-t`: Set timeout in milliseconds
-  - `--watch` / `-w`: Watch mode
+- Run `pnpm test` in the workspace root to run the full suite (slow).
+- Run `pnpm -C <package-directory> test` to run a package’s tests (example: `pnpm -C packages/astro test`, `pnpm -C packages/integrations/react test`).
+- Run an individual test file with `node path/to/test.js` (non-E2E).
+- For focused Astro package runs: `pnpm -C packages/astro test:unit`, `pnpm -C packages/astro test:integration`, `pnpm -C packages/astro test:cli`, `pnpm -C packages/astro test:types`.
+- For matching a subset by test name in Astro: `pnpm -C packages/astro test:match -- "<pattern>"`.
+- For E2E: `pnpm test:e2e` or `pnpm test:e2e:match -- "<pattern>"`.
 
 # Astro Quick Reference
 
diff --git a/packages/language-tools/vscode/syntaxes/astro.tmLanguage.json b/packages/language-tools/vscode/syntaxes/astro.tmLanguage.json
index 959902a92a5f..931508b706f3 100644
--- a/packages/language-tools/vscode/syntaxes/astro.tmLanguage.json
+++ b/packages/language-tools/vscode/syntaxes/astro.tmLanguage.json
@@ -750,7 +750,7 @@
       ]
     },
     "tags-lang": {
-      "begin": "<(script|style)",
+      "begin": "<(script|style)(?=\\s|/?>)",
       "end": "</\\1\\s*>|/>",
       "beginCaptures": {
         "0": {
diff --git a/packages/language-tools/vscode/syntaxes/astro.tmLanguage.src.yaml b/packages/language-tools/vscode/syntaxes/astro.tmLanguage.src.yaml
index 197695cbbd5c..e0a99a2a5e17 100644
--- a/packages/language-tools/vscode/syntaxes/astro.tmLanguage.src.yaml
+++ b/packages/language-tools/vscode/syntaxes/astro.tmLanguage.src.yaml
@@ -490,7 +490,7 @@ repository:
 
   # Language tags - they are handled differently for the purposes of language injection.
   tags-lang:
-    begin: <(script|style)
+    begin: <(script|style)(?=\s|/?>)
     end: </\1\s*>|/>
     beginCaptures: { 0: { patterns: [include: '#tags-start-node'] } }
     endCaptures: { 0: { patterns: [include: '#tags-end-node'] } }
diff --git a/packages/language-tools/vscode/test/grammar/fixtures/components/lowercase-style-prefix.astro b/packages/language-tools/vscode/test/grammar/fixtures/components/lowercase-style-prefix.astro
new file mode 100644
index 000000000000..c27093c571f6
--- /dev/null
+++ b/packages/language-tools/vscode/test/grammar/fixtures/components/lowercase-style-prefix.astro
@@ -0,0 +1,6 @@
+---
+const label = "Click Me";
+---
+
+<styled.button>{label}</styled.button>
+<div>After</div>
diff --git a/packages/language-tools/vscode/test/grammar/fixtures/components/lowercase-style-prefix.astro.snap b/packages/language-tools/vscode/test/grammar/fixtures/components/lowercase-style-prefix.astro.snap
new file mode 100644
index 000000000000..1ec086adf0cd
--- /dev/null
+++ b/packages/language-tools/vscode/test/grammar/fixtures/components/lowercase-style-prefix.astro.snap
@@ -0,0 +1,30 @@
+>---
+#^^^ source.astro comment
+>const label = "Click Me";
+#^^^^^^^^^^^^^^^^^^^^^^^^^^ source.astro meta.embedded.block.astro source.ts
+>---
+#^^^ source.astro comment
+>
+><styled.button>{label}</styled.button>
+#^ source.astro meta.scope.tag.styled.button.astro meta.tag.start.astro punctuation.definition.tag.begin.astro
+# ^^^^^^ source.astro meta.scope.tag.styled.button.astro meta.tag.start.astro entity.name.tag.astro
+#       ^ source.astro meta.scope.tag.styled.button.astro meta.tag.start.astro
+#        ^^^^^^ source.astro meta.scope.tag.styled.button.astro meta.tag.start.astro entity.name.tag.astro
+#              ^ source.astro meta.scope.tag.styled.button.astro meta.tag.start.astro punctuation.definition.tag.end.astro
+#               ^ source.astro punctuation.section.embedded.begin.astro
+#                ^^^^^ source.astro meta.embedded.expression.astro source.tsx
+#                     ^ source.astro punctuation.section.embedded.end.astro
+#                      ^^ source.astro meta.scope.tag.styled.button.astro meta.tag.end.astro punctuation.definition.tag.begin.astro
+#                        ^^^^^^ source.astro meta.scope.tag.styled.button.astro meta.tag.end.astro entity.name.tag.astro
+#                              ^ source.astro meta.scope.tag.styled.button.astro meta.tag.end.astro
+#                               ^^^^^^ source.astro meta.scope.tag.styled.button.astro meta.tag.end.astro entity.name.tag.astro
+#                                     ^ source.astro meta.scope.tag.styled.button.astro meta.tag.end.astro punctuation.definition.tag.end.astro
+><div>After</div>
+#^ source.astro meta.scope.tag.div.astro meta.tag.start.astro punctuation.definition.tag.begin.astro
+# ^^^ source.astro meta.scope.tag.div.astro meta.tag.start.astro entity.name.tag.astro
+#    ^ source.astro meta.scope.tag.div.astro meta.tag.start.astro punctuation.definition.tag.end.astro
+#     ^^^^^ source.astro text.astro
+#          ^^ source.astro meta.scope.tag.div.astro meta.tag.end.astro punctuation.definition.tag.begin.astro
+#            ^^^ source.astro meta.scope.tag.div.astro meta.tag.end.astro entity.name.tag.astro
+#               ^ source.astro meta.scope.tag.div.astro meta.tag.end.astro punctuation.definition.tag.end.astro
+>
\ No newline at end of file