diff --git a/packages/cli/src/commands/export.test.ts b/packages/cli/src/commands/export.test.ts
new file mode 100644
index 00000000..8a04f799
--- /dev/null
+++ b/packages/cli/src/commands/export.test.ts
@@ -0,0 +1,67 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { mkdtempSync, rmSync, writeFileSync } from 'node:fs';
+import { join } from 'node:path';
+import { tmpdir } from 'node:os';
+import { afterEach, describe, expect, it, spyOn } from 'bun:test';
+import exportCommand from './export.js';
+
+const DESIGN = `---
+version: alpha
+name: Finding Repro
+colors:
+  primary: "#000000"
+  on-primary: "#ffffff"
+components:
+  header:
+    backgroundColor: "{colors.primary}"
+    textColor: "{colors.on-primary}"
+---
+
+## Overview
+
+Repro.
+`;
+
+describe('export command', () => {
+  afterEach(() => {
+    process.exitCode = undefined;
+  });
+
+  it('emits exactly one trailing newline for css-tailwind output', async () => {
+    const dir = mkdtempSync(join(tmpdir(), 'designmd-export-'));
+    const designPath = join(dir, 'DESIGN.md');
+    writeFileSync(designPath, DESIGN);
+    const writeSpy = spyOn(process.stdout, 'write').mockImplementation(() => true);
+    let output = '';
+
+    try {
+      await exportCommand.run!({
+        args: {
+          file: designPath,
+          format: 'css-tailwind',
+        },
+      } as any);
+      expect(writeSpy.mock.calls.length).toBe(1);
+      output = String(writeSpy.mock.calls[0][0]);
+    } finally {
+      writeSpy.mockRestore();
+      rmSync(dir, { recursive: true, force: true });
+    }
+
+    expect(output).toEndWith('\n');
+    expect(output).not.toEndWith('\n\n');
+  });
+});
diff --git a/packages/cli/src/commands/export.ts b/packages/cli/src/commands/export.ts
index 1bb50d5b..87b1a0c8 100644
--- a/packages/cli/src/commands/export.ts
+++ b/packages/cli/src/commands/export.ts
@@ -62,7 +62,7 @@ export default defineCommand({
         return;
       }
 
-      console.log(serializeTailwindV4(result.data.theme));
+      process.stdout.write(serializeTailwindV4(result.data.theme));
     } else if (format === 'json-tailwind' || format === 'tailwind') {
       const handler = new TailwindEmitterHandler();
       const result = handler.execute(report.designSystem);