Reduce teacher quick reply card size

tests/e2e/teacher-reply-layout.spec.ts

@@ -223,6 +223,10 @@ for (const width of [319, 508]) for (const kind of ['ordinary', 'ideas', 'struct
     await input.fill('保留我的草稿');
     const card = page.getByRole('button', { name: '有什么好玩的想法？' });
     await expect(card).toBeVisible();
+    await expect(card).toHaveCSS('font-size', '14px');
+    await expect(card).toHaveCSS('padding', '10px 12px');
+    await expect(card.locator('svg')).toHaveCSS('width', '14px');
+    expect((await card.boundingBox())!.height).toBeGreaterThanOrEqual(44);
     expect(await card.evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
     await card.click();
     await expect(page.getByText('好，我们就从这一个问题聊起。')).toBeVisible();