diff --git a/packages/host/directory-picker-browse/src/client/DirectoryBrowser.module.css b/packages/host/directory-picker-browse/src/client/DirectoryBrowser.module.css
index bdb57ca848..a2c712c811 100644
--- a/packages/host/directory-picker-browse/src/client/DirectoryBrowser.module.css
+++ b/packages/host/directory-picker-browse/src/client/DirectoryBrowser.module.css
@@ -1,6 +1,7 @@
 /* Directory-browser dialog (figma 813-23126 family). The shared Modal renders
  * headless here — mask, card, Escape only — and this module owns the figma
- * frame: 600×420 card (viewport-clamped), header (title + crumbs, l3 separator),
+ * frame: 680×500 card (viewport-clamped; upsized from the figma 600×420),
+ * header (title + crumbs, l3 separator),
  * the one-or-two-column Miller content, and the bordered footer. */
 
 /* Doubled class beats Modal's own .dialog regardless of stylesheet order. */
@@ -8,19 +9,19 @@
  * columns scroll, so shrinking the height keeps Open/Cancel reachable
  * instead of clipping them below a fixed overlay. */
 .dialog.dialog {
-  width: min(600px, 100%);
-  height: min(420px, calc(100dvh - 32px));
+  width: min(680px, 100%);
+  height: min(500px, calc(100dvh - 32px));
   padding: 0;
   gap: 0;
 }
 
-/* Header block: pl24 pr14 pt22 pb12, 8px between title row and crumb row. */
+/* Header block: pl24 pr14 pt16 pb8, 8px between title row and crumb row. */
 .header {
   display: flex;
   flex-direction: column;
   gap: 8px;
   flex: none;
-  padding: 22px 14px 12px 24px;
+  padding: 16px 14px 8px 24px;
   border-bottom: 1px solid var(--dsw-alias-border-l3);
 }
 
@@ -56,6 +57,7 @@
   min-height: 0;
   gap: 20px;
   overflow-x: auto;
+  scrollbar-width: none;
 }
 
 .crumbTrail {
@@ -126,28 +128,31 @@
   color: var(--dsw-alias-label-primary);
 }
 
-/* Miller content: pt16 px24; columns are 256 wide (or full width solo) with
- * the hairline divider centered between them; each column scrolls alone. */
+/* Miller content: symmetric 16px vertical padding so the divider clears the
+ * header and footer rules evenly; columns are 256 wide (or full width solo)
+ * with the hairline divider centered between them; each column scrolls alone. */
 .content {
   display: flex;
   flex-direction: column;
   flex: 1 1 0;
   min-height: 0;
-  padding: 16px 24px 0;
+  padding: 16px 24px;
 }
 
+/* Two-pane columns split the row evenly around the divider; 256px is the
+ * floor below which the row scrolls (scrollbar hidden, the effect pins the
+ * child pane into view) instead of squeezing the panes. */
 .column {
   display: flex;
   flex-direction: column;
   gap: 2px;
-  width: 256px;
-  flex: none;
+  flex: 1 1 0;
+  min-width: 256px;
   overflow-y: auto;
 }
 
 .columnWide {
   width: 100%;
-  flex: 1 1 0;
 }
 
 .divider {
@@ -228,8 +233,8 @@
   color: var(--dsw-alias-state-error-primary);
 }
 
-/* Footer: l3 separator on top, pt12 px24, New-folder pinned left; the fixed
- * card leaves the figma 28px below the 36px buttons. */
+/* Footer: l3 separator on top, symmetric padding so the row sits vertically
+ * centered in the bar; New-folder and the show-hidden toggle pin left. */
 .footerBar {
   display: flex;
   align-items: center;
@@ -238,12 +243,17 @@
   flex-wrap: wrap;
   gap: 8px;
   flex: none;
-  padding: 12px 24px 28px;
+  padding: 16px 24px;
   border-top: 1px solid var(--dsw-alias-border-l3);
 }
 
-/* Show-hidden toggle: a subtle text button in the footer, left of the gap. */
+/* Show-hidden toggle: a subtle fixed-label text button left of the gap;
+ * the pressed state seats a check glyph before the label (Menu's selected
+ * vocabulary) instead of flipping the wording. */
 .showHiddenToggle {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
   border: none;
   background: transparent;
   padding: 0;
diff --git a/packages/host/directory-picker-browse/src/client/DirectoryBrowser.tsx b/packages/host/directory-picker-browse/src/client/DirectoryBrowser.tsx
index 20fef7a827..149e04d87e 100644
--- a/packages/host/directory-picker-browse/src/client/DirectoryBrowser.tsx
+++ b/packages/host/directory-picker-browse/src/client/DirectoryBrowser.tsx
@@ -10,13 +10,14 @@
  * selects the created folder. Open adopts the selected folder, falling back
  * to the listed level. Pure consumer of the injected browse calls — the
  * owning flow decides what "Open" means and owns the workspace-creation
- * error surface. Hidden entries are host-flagged and hidden by default;
- * a "Show hidden files" toggle in the footer reveals them (client-side only).
+ * error surface. Hidden entries are host-flagged and hidden by default; the
+ * footer's fixed-label "Show hidden files" toggle (aria-pressed, check when
+ * on) reveals them (client-side only).
  */
 import { useCallback, useEffect, useRef, useState } from 'react'
 import clsx from 'clsx'
 import {
-  Button, IconChevronRightOutline14, IconFolderClose16, IconFolderOpen16, IconPlusOutline16, Modal,
+  Button, IconCheckOutline16, IconChevronRightOutline14, IconFolderClose16, IconFolderOpen16, IconPlusOutline16, Modal,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { DirectoryEntry, DirectoryListing } from '@deepseek-ai/dsh-client-runtime/client'
 import { DirectoryBrowseError } from '@deepseek-ai/dsh-client-runtime/client'
@@ -451,10 +452,12 @@ export function DirectoryBrowser({ open, listDirectory, createDirectory, onOpen,
         <button
           type="button"
           className={clsx(css.showHiddenToggle, showHidden && css.showHiddenToggleActive)}
+          aria-pressed={showHidden}
           disabled={parentInert}
           onClick={() => { setShowHidden(prev => !prev) }}
         >
-          {t(showHidden ? 'browser.hideHidden' : 'browser.showHidden')}
+          {showHidden && <IconCheckOutline16 size={14} />}
+          {t('browser.showHidden')}
         </button>
         <span className={css.footerGap} />
         <Button variant="outline" className={clsx(css.footerAction)} disabled={parentInert} onClick={onClose}>{t('browser.cancel')}</Button>
diff --git a/packages/host/directory-picker-browse/src/client/index.ts b/packages/host/directory-picker-browse/src/client/index.ts
index e47613cdaf..a458ca94c7 100644
--- a/packages/host/directory-picker-browse/src/client/index.ts
+++ b/packages/host/directory-picker-browse/src/client/index.ts
@@ -47,7 +47,6 @@ export function apply(ctx: ClientContext): void {
         'browser.loading': '加载中…',
         'browser.truncated': '文件夹过多，仅显示开头部分。',
         'browser.showHidden': '显示隐藏文件',
-        'browser.hideHidden': '隐藏隐藏文件',
       }],
       ['en', {
         'browser.title': 'Select Workspace Directory',
@@ -63,7 +62,6 @@ export function apply(ctx: ClientContext): void {
         'browser.loading': 'Loading…',
         'browser.truncated': 'Too many folders to list; only the beginning is shown.',
         'browser.showHidden': 'Show hidden files',
-        'browser.hideHidden': 'Hide hidden files',
       }],
     ]
     try {
diff --git a/packages/host/directory-picker-browse/tests/client-flow.spec.tsx b/packages/host/directory-picker-browse/tests/client-flow.spec.tsx
index c29afc935c..31ec5a4927 100644
--- a/packages/host/directory-picker-browse/tests/client-flow.spec.tsx
+++ b/packages/host/directory-picker-browse/tests/client-flow.spec.tsx
@@ -163,7 +163,6 @@ describe('directory-picker-browse client half', () => {
     expect(injected.t('browser.title')).toBe('选择工作区目录')
     expect(injected.t('browser.newFolder')).toBe('新建文件夹')
     expect(injected.t('browser.showHidden')).toBe('显示隐藏文件')
-    expect(injected.t('browser.hideHidden')).toBe('隐藏隐藏文件')
   })
 
   it('drives the injected browse calls through the hole entry', async () => {
diff --git a/packages/host/directory-picker-browse/tests/directory-browser.spec.tsx b/packages/host/directory-picker-browse/tests/directory-browser.spec.tsx
index 624a2c8705..bc2ad81f76 100644
--- a/packages/host/directory-picker-browse/tests/directory-browser.spec.tsx
+++ b/packages/host/directory-picker-browse/tests/directory-browser.spec.tsx
@@ -107,11 +107,14 @@ describe('DirectoryBrowser', () => {
     const b = mount()
     await waitFor(() => { expect(screen.getByRole('listitem')).toBeTruthy() })
     expect(screen.queryByText('.config')).toBeNull()
-    // Toggle hidden files on.
-    fireEvent.click(screen.getByRole('button', { name: 'browser.showHidden' }))
+    // The fixed-label toggle reports its state through aria-pressed.
+    const toggle = screen.getByRole('button', { name: 'browser.showHidden' })
+    expect(toggle.getAttribute('aria-pressed')).toBe('false')
+    fireEvent.click(toggle)
+    expect(toggle.getAttribute('aria-pressed')).toBe('true')
     expect(screen.getByText('.config')).toBeTruthy()
-    // Toggle hidden files off.
-    fireEvent.click(screen.getByRole('button', { name: 'browser.hideHidden' }))
+    fireEvent.click(toggle)
+    expect(toggle.getAttribute('aria-pressed')).toBe('false')
     expect(screen.queryByText('.config')).toBeNull()
     // Close resets the toggle.
     b.view.rerender(<DirectoryBrowser {...b.props} open={false} />)