diff --git a/src/components/SwitchButtonGroup.tsx b/src/components/SwitchButtonGroup.tsx
index c46a6f1..06f5703 100644
--- a/src/components/SwitchButtonGroup.tsx
+++ b/src/components/SwitchButtonGroup.tsx
@@ -23,10 +23,12 @@ const SIZE_CLASSES = {
   large: 'text-base h-11 px-4 py-2 rounded-lg',
 } as const;
 
+const INTERACTIVE_CLASSES =
+  'active:scale-[0.98] focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-1 focus-visible:ring-offset-muted';
+
 const SELECTED_CLASSES =
-  'bg-background text-foreground shadow-sm font-semibold fade-in-zoom-95 hover:shadow-md active:scale-[0.98] focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-1 focus-visible:ring-offset-muted';
-const UNSELECTED_CLASSES =
-  'hover:bg-background/50 hover:text-foreground/80 active:scale-[0.98] focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-1 focus-visible:ring-offset-muted';
+  'bg-background text-foreground shadow-sm font-semibold hover:bg-background hover:text-foreground';
+const UNSELECTED_CLASSES = 'text-muted-foreground hover:bg-accent hover:text-accent-foreground';
 
 export default function SwitchButtonGroup<T extends string | number = string>({
   value,
@@ -39,7 +41,7 @@ export default function SwitchButtonGroup<T extends string | number = string>({
   return (
     <div
       className={cn(
-        'inline-flex w-full items-center justify-center rounded-lg bg-muted text-muted-foreground p-1',
+        'inline-flex w-full items-center justify-center rounded-lg bg-muted p-1',
         className,
       )}
       {...props}
@@ -53,6 +55,7 @@ export default function SwitchButtonGroup<T extends string | number = string>({
           className={cn(
             'flex-1 transition-all',
             SIZE_CLASSES[size],
+            INTERACTIVE_CLASSES,
             value === option.value ? SELECTED_CLASSES : UNSELECTED_CLASSES,
           )}
         >
diff --git a/src/components/__tests__/SwitchButtonGroup.test.tsx b/src/components/__tests__/SwitchButtonGroup.test.tsx
index de0492b..1a59c96 100644
--- a/src/components/__tests__/SwitchButtonGroup.test.tsx
+++ b/src/components/__tests__/SwitchButtonGroup.test.tsx
@@ -22,7 +22,7 @@ describe('SwitchButtonGroup 组件', () => {
     const buttonB = screen.getByRole('button', { name: /选项B/i });
 
     expect(buttonA).toHaveClass('bg-background', 'text-foreground', 'shadow-sm');
-    expect(buttonB).toHaveClass('hover:bg-background/50');
+    expect(buttonB).toHaveClass('hover:bg-accent', 'hover:text-accent-foreground');
   });
 
   it('点击未选中按钮时应触发 onChange 并传入选中值', () => {
@@ -34,11 +34,12 @@ describe('SwitchButtonGroup 组件', () => {
     expect(handleChange).toHaveBeenCalledWith('b');
   });
 
-  it('点击已选中按钮时不应触发 onChange', () => {
+  it('点击已选中按钮时仍会触发 onChange 并传回原值', () => {
     const handleChange = vi.fn();
     render(<SwitchButtonGroup value="a" options={options} onChange={handleChange} />);
 
     fireEvent.click(screen.getByRole('button', { name: /选项A/i }));
+    expect(handleChange).toHaveBeenCalledTimes(1);
     expect(handleChange).toHaveBeenCalledWith('a');
   });
 
@@ -58,13 +59,6 @@ describe('SwitchButtonGroup 组件', () => {
     expect(button).toHaveClass('text-xs');
   });
 
-  it('应支持 buttonSx 自定义按钮样式', () => {
-    render(<SwitchButtonGroup value="a" options={options} onChange={vi.fn()} />);
-
-    const button = screen.getByRole('button', { name: /选项A/i });
-    expect(button).toBeInTheDocument();
-  });
-
   it('应支持 ReactNode 类型的 label', () => {
     const nodeOptions = [{ value: 'x', label: <span data-testid="custom-label">自定义</span> }];
     render(<SwitchButtonGroup value="x" options={nodeOptions} onChange={vi.fn()} />);
@@ -72,20 +66,6 @@ describe('SwitchButtonGroup 组件', () => {
     expect(screen.getByTestId('custom-label')).toBeInTheDocument();
   });
 
-  it('默认按钮样式应禁止文字换行', () => {
-    render(<SwitchButtonGroup value="a" options={options} onChange={vi.fn()} />);
-
-    const button = screen.getByRole('button', { name: /选项A/i });
-    expect(button).toHaveClass('whitespace-nowrap');
-  });
-
-  it('buttonSx 传入时应覆盖默认换行样式', () => {
-    render(<SwitchButtonGroup value="a" options={options} onChange={vi.fn()} />);
-
-    const button = screen.getByRole('button', { name: /选项A/i });
-    expect(button).toBeInTheDocument();
-  });
-
   describe('number 类型支持', () => {
     const numberOptions = [
       { value: 2, label: '2' },
@@ -105,7 +85,7 @@ describe('SwitchButtonGroup 组件', () => {
       const button2 = screen.getByRole('button', { name: /^2$/i });
       const button4 = screen.getByRole('button', { name: /^4$/i });
 
-      expect(button2).toHaveClass('hover:bg-background/50');
+      expect(button2).toHaveClass('hover:bg-accent', 'hover:text-accent-foreground');
       expect(button4).toHaveClass('bg-background', 'text-foreground', 'shadow-sm');
     });