diff --git a/src/features/project-assets/AssetLibraryPage.vue b/src/features/project-assets/AssetLibraryPage.vue
index df75413..04653bd 100644
--- a/src/features/project-assets/AssetLibraryPage.vue
+++ b/src/features/project-assets/AssetLibraryPage.vue
@@ -1,13 +1,12 @@
 <script setup lang="ts">
-import { computed, nextTick, reactive, ref } from 'vue'
-import { NAlert, NButton, NFormItem, NImage, NInput, NPopconfirm, NSelect, NTag, NTooltip } from 'naive-ui'
-import { Eye, Info, RefreshCw, Search, Trash2, Upload } from '@lucide/vue'
+import { computed, reactive, ref } from 'vue'
+import { NAlert, NButton, NFormItem, NInput, NPopconfirm, NSelect, NTag, NTooltip } from 'naive-ui'
+import { RefreshCw, Search, Trash2, Upload } from '@lucide/vue'
 import { AppDialog, AssetImage, EmptyState } from '../../components/ui'
 import AppForm from '../../components/ui/AppForm.vue'
 import WorkspacePage from '../../components/ui/WorkspacePage.vue'
 import { useQuery } from '../../composables/useQuery'
 import { fieldRule } from '../../lib/form-rules'
-import { referenceImageUrl } from '../../lib/assets'
 import { errorMessage } from '../../lib/http'
 import { projectsApi } from '../projects/api'
 import { projectAssetsApi } from './api'
@@ -40,8 +39,6 @@ const uploadOpen = ref(false)
 const editOpen = ref(false)
 const selectedFile = ref<File | null>(null)
 const selectedAsset = ref<GlobalProjectAsset | null>(null)
-const previewAsset = ref<GlobalProjectAsset | null>(null)
-const previewImage = ref<{ showPreview: () => void } | null>(null)
 const overflowTitles = reactive(new Set<string>())
 const uploadForm = reactive({ projectId: '', name: '', category: 'reference' })
 const editForm = reactive({ name: '', category: '' })
@@ -178,13 +175,6 @@ function checkTitleOverflow(assetId: string, event: MouseEvent) {
     else overflowTitles.delete(assetId)
 }
 
-/** 预览按钮独立打开 Naive 图片查看器，不触发卡片详情。 */
-async function openPreview(asset: GlobalProjectAsset) {
-    previewAsset.value = asset
-    await nextTick()
-    previewImage.value?.showPreview()
-}
-
 async function updateAsset() {
     const asset = selectedAsset.value
     if (!asset || busy.value) return
@@ -311,28 +301,6 @@ async function removeAsset() {
             >
                 <AssetImage :src="asset.publicUrl" :alt="asset.name" class="asset-library-image" />
                 <div class="asset-library-overlay">
-                    <div class="asset-library-actions">
-                        <NButton
-                            quaternary
-                            circle
-                            class="asset-overlay-button"
-                            aria-label="预览图片"
-                            title="预览图片"
-                            @click.stop="openPreview(asset)"
-                        >
-                            <template #icon><Eye :size="16" /></template>
-                        </NButton>
-                        <NButton
-                            quaternary
-                            circle
-                            class="asset-overlay-button"
-                            aria-label="查看素材详情"
-                            title="查看素材详情"
-                            @click.stop="openEdit(asset)"
-                        >
-                            <template #icon><Info :size="16" /></template>
-                        </NButton>
-                    </div>
                     <NTooltip placement="top-start" trigger="hover" :disabled="!overflowTitles.has(asset.id)">
                         <template #trigger>
                             <h2 class="asset-library-title" @mouseenter="checkTitleOverflow(asset.id, $event)">
@@ -365,16 +333,6 @@ async function removeAsset() {
         </EmptyState>
         <p v-else class="py-10 text-center text-sm text-muted" role="status">正在读取全部资产图片…</p>
 
-        <NImage
-            v-if="previewAsset"
-            ref="previewImage"
-            class="sr-only"
-            :src="referenceImageUrl(previewAsset.publicUrl) ?? undefined"
-            :preview-src="referenceImageUrl(previewAsset.publicUrl) ?? undefined"
-            :alt="previewAsset.name"
-            :previewed-img-props="{ alt: previewAsset.name, referrerpolicy: 'no-referrer' }"
-        />
-
         <AppDialog
             v-model:open="uploadOpen"
             title="上传资产图片"
@@ -485,36 +443,19 @@ async function removeAsset() {
     box-shadow: inset 0 0 0 2px var(--color-accent);
 }
 .asset-library-image {
-    @apply block aspect-auto;
+    @apply block aspect-auto bg-transparent;
 }
 .asset-library-image :deep(.reveal-image),
-.asset-library-image :deep(.n-image),
+.asset-library-image :deep(.n-image) {
+    @apply block h-auto min-h-0 bg-transparent;
+}
 .asset-library-image :deep(.n-image img) {
-    @apply h-auto min-h-[160px];
+    @apply block w-full h-auto min-h-0 object-contain;
 }
 .asset-library-overlay {
     @apply absolute inset-0 flex flex-col justify-end p-[10px] text-white;
     background: linear-gradient(to top, rgb(0 0 0 / 0.84) 0, rgb(0 0 0 / 0.35) 42%, transparent 70%);
 }
-.asset-library-actions {
-    @apply absolute top-[10px] left-[10px] flex items-center gap-1 opacity-0 pointer-events-none;
-    transform: translateY(-4px);
-    transition:
-        opacity 0.18s ease,
-        transform 0.18s ease;
-}
-.asset-library-card:hover .asset-library-actions,
-.asset-library-card:focus-visible .asset-library-actions,
-.asset-library-card:focus-within .asset-library-actions {
-    @apply opacity-100 pointer-events-auto;
-    transform: translateY(0);
-}
-.asset-overlay-button {
-    @apply text-white bg-black/45 backdrop-blur-sm;
-}
-.asset-overlay-button:hover {
-    @apply text-white bg-black/60;
-}
 .asset-library-title {
     @apply block w-full truncate text-sm font-semibold;
 }
diff --git a/tests/features/project-assets/library.test.ts b/tests/features/project-assets/library.test.ts
index e816bfa..4494ac8 100644
--- a/tests/features/project-assets/library.test.ts
+++ b/tests/features/project-assets/library.test.ts
@@ -87,12 +87,9 @@ describe('全局资产库', () => {
         expect(wrapper.get('.asset-library-card').text()).not.toContain('rain-street-original.png')
         expect(wrapper.get('.asset-library-card').text()).not.toContain('4.0 KB')
 
-        await wrapper.get('[aria-label="预览图片"]').trigger('click')
-        await flushPromises()
-        expect(document.querySelector('[role="dialog"][aria-label="素材详情与管理"]')).toBeNull()
-        expect(document.querySelector('.n-image-preview-container')).not.toBeNull()
-
-        await wrapper.get('[aria-label="查看素材详情"]').trigger('click')
+        expect(wrapper.find('[aria-label="预览图片"]').exists()).toBe(false)
+        expect(wrapper.find('[aria-label="查看素材详情"]').exists()).toBe(false)
+        await wrapper.get('.asset-library-card').trigger('click')
         await flushPromises()
         const dialog = document.querySelector('[role="dialog"][aria-label="素材详情与管理"]')!
         expect(dialog).not.toBeNull()