diff --git a/apps/viewer/src/__tests__/album-header.spec.ts b/apps/viewer/src/__tests__/album-header.spec.ts
index a69c9c7..e2229f5 100644
--- a/apps/viewer/src/__tests__/album-header.spec.ts
+++ b/apps/viewer/src/__tests__/album-header.spec.ts
@@ -203,25 +203,20 @@ describe('album header info area (UI-02 V02)', () => {
     expect(copyBtn.textContent).toContain('复制失败');
   });
 
-  it('share sheet offers navigator.share when available (native panel self-reports)', async () => {
+  it('native share button removed (user request 2026-09-24): copy only', async () => {
     const share = vi.fn(() => Promise.resolve());
     Object.defineProperty(navigator, 'share', { value: share, configurable: true });
     const writeText = stubClipboard(() => Promise.resolve());
     const wrapper = mountHeader({ album: makeAlbum(), viewCount: null });
 
     await wrapper.find('.share-btn').trigger('click');
-    await Promise.resolve();
-    await Promise.resolve();
-    const nativeBtn = sheetEl()!.querySelector<HTMLButtonElement>('[data-test="share-sheet-native"]')!;
-    expect(nativeBtn).not.toBeNull();
-    nativeBtn.click();
-    await Promise.resolve();
-    await Promise.resolve();
-    expect(share).toHaveBeenCalledWith({
-      title: '2026 公司年会',
-      url: 'http://localhost:3000/a/tokfixture0000000000aaaa?lang=zh-CN',
-    });
-    // 原生分享路径不落剪贴板（面板自反馈，§5.4）。
-    expect(writeText).not.toHaveBeenCalled();
+    await flushPromises();
+    // 仅复制按钮；系统分享不再提供（navigator.share 存在也不显示）。
+    expect(sheetEl()!.querySelector('[data-test="share-sheet-native"]')).toBeNull();
+    const copyBtn = sheetEl()!.querySelector<HTMLButtonElement>('[data-test="share-sheet-copy"]')!;
+    copyBtn.click();
+    await flushPromises();
+    expect(writeText).toHaveBeenCalled();
+    expect(share).not.toHaveBeenCalled();
   });
 });
diff --git a/apps/viewer/src/__tests__/lightbox.spec.ts b/apps/viewer/src/__tests__/lightbox.spec.ts
index 2a31052..2991734 100644
--- a/apps/viewer/src/__tests__/lightbox.spec.ts
+++ b/apps/viewer/src/__tests__/lightbox.spec.ts
@@ -589,28 +589,6 @@ describe('photo lightbox interactions (UI-02 V05)', () => {
     return document.querySelector('.share-sheet');
   }
 
-  it('share opens the sheet with the photo deep link; native share via sheet button', async () => {
-    const share = vi.fn(() => Promise.resolve());
-    Object.defineProperty(navigator, 'share', { value: share, configurable: true });
-    const { wrapper } = mountV05('p1', {
-      albumTitle: '2026 公司年会',
-      shareUrl: '/a/tok-lb/p/p1?lang=zh-CN',
-    });
-    await flushPromises();
-
-    await wrapper.find('button[aria-label="分享照片"]').trigger('click');
-    await flushPromises();
-    // 弹层出现并携带照片深链（页面级提示已退役）。
-    expect(lbSheet()).not.toBeNull();
-    // 链接文本已隐藏（2026-09-24）。
-    expect(wrapper.find('.share-status').exists()).toBe(false);
-
-    const nativeBtn = lbSheet()!.querySelector<HTMLButtonElement>('[data-test="share-sheet-native"]')!;
-    nativeBtn.click();
-    await flushPromises();
-    expect(share).toHaveBeenCalledWith({ title: '2026 公司年会', url: '/a/tok-lb/p/p1?lang=zh-CN' });
-  });
-
   it('sheet copy button writes the deep link with on-button feedback', async () => {
     const writeText = vi.fn(() => Promise.resolve());
     Object.defineProperty(navigator, 'clipboard', { value: { writeText }, configurable: true });
@@ -619,6 +597,8 @@ describe('photo lightbox interactions (UI-02 V05)', () => {
 
     await wrapper.find('button[aria-label="分享照片"]').trigger('click');
     await flushPromises();
+    // 系统分享按钮已移除（2026-09-24）：仅复制。
+    expect(lbSheet()!.querySelector('[data-test="share-sheet-native"]')).toBeNull();
     const copyBtn = lbSheet()!.querySelector<HTMLButtonElement>('[data-test="share-sheet-copy"]')!;
     copyBtn.click();
     await flushPromises();
diff --git a/apps/viewer/src/components/viewer/ShareSheet.vue b/apps/viewer/src/components/viewer/ShareSheet.vue
index 6075df2..1a71a4b 100644
--- a/apps/viewer/src/components/viewer/ShareSheet.vue
+++ b/apps/viewer/src/components/viewer/ShareSheet.vue
@@ -12,7 +12,6 @@
 import { nextTick, onBeforeUnmount, ref, watch } from 'vue';
 import { useI18n } from 'vue-i18n';
 import QRCode from 'qrcode';
-import { canNativeShare } from '../../support/share';
 import { copyText } from '../../support/clipboard';
 
 const props = defineProps<{
@@ -34,7 +33,6 @@ const copyState = ref<'idle' | 'copied' | 'failed'>('idle');
 let copyResetTimer: ReturnType<typeof setTimeout> | undefined;
 let qrAbort: { cancel: () => void } | null = null;
 
-const showNativeShare = canNativeShare();
 
 /** 二维码绘制（url 变化重绘；弹层打开时按可见尺寸绘制）。 */
 async function drawQr(): Promise<void> {
@@ -82,14 +80,6 @@ async function onCopy(): Promise<void> {
   }, 2500);
 }
 
-async function onNativeShare(): Promise<void> {
-  try {
-    await navigator.share({ title: props.title, url: props.url });
-  } catch {
-    // 取消（AbortError）或其他失败：静默——弹层仍在，复制路径可用。
-  }
-}
-
 function onKeydown(event: KeyboardEvent): void {
   if (event.key === 'Escape') {
     event.preventDefault();
@@ -145,15 +135,7 @@ onBeforeUnmount(() => {
         <!-- 链接文本已按用户要求隐藏（2026-09-24）——二维码 + 复制按钮保留。 -->
 
         <div class="share-sheet-actions">
-          <button
-            v-if="showNativeShare"
-            type="button"
-            class="share-sheet-btn is-secondary"
-            data-test="share-sheet-native"
-            @click="onNativeShare"
-          >
-            {{ t('viewer.share') }}
-          </button>
+          <!-- 系统分享按钮已按用户要求移除（2026-09-24）——仅保留复制链接。 -->
           <button
             type="button"
             class="share-sheet-btn is-primary"
@@ -289,13 +271,6 @@ onBeforeUnmount(() => {
 .share-sheet-btn.is-primary[data-state='failed'] {
   background: #b54a4a;
 }
-.share-sheet-btn.is-secondary {
-  flex: 0 0 auto;
-  padding: 0 18px;
-  background: #ffffff;
-  border-color: var(--viewer-divider, #d7dfeb);
-  color: var(--viewer-text, #172033);
-}
 .share-sheet-btn:focus-visible {
   outline: 2px solid var(--viewer-primary, #1a73e8);
   outline-offset: 2px;