style(storybook): unify page hierarchy and compact layouts

src/components/tabs.stories.tsx

@@ -159,9 +159,8 @@ export const All: Story = {
   name: "Tabs",
   parameters: { layout: "fullscreen", controls: { disable: true } },
   render: () => (
-    // `py-4!` trims this page's top and bottom padding (30-40px by viewport width) so the page fits a 900px-high PC screen without
-    // shrinking any component; the important modifier is needed because the shared rule has the same specificity. Section gaps stay 32px.
-    <StoryPage className="py-4!">
+    // The common compact Story page (16–24px gutter, 24px section gap) fits this page on a 900px-high PC screen without an override.
+    <StoryPage>
       <StoryPageHeader title="Tabs" />
       <StorySection title="Variants">
         {/* The former States section (Overflow) is the third Variants item. */}