diff --git a/.hermes/shared-memory/pitfalls.md b/.hermes/shared-memory/pitfalls.md
index a5b44b28..eb41f0e5 100644
--- a/.hermes/shared-memory/pitfalls.md
+++ b/.hermes/shared-memory/pitfalls.md
@@ -240,6 +240,14 @@
 - 验证：浏览器触发 `/creation/puzzle` 与 `/creation/match3d` 的泥点确认弹窗，检查 overlay 最近主题 class 存在、`--platform-modal-fill` 有值且面板为实底；聚焦测试覆盖默认 overlay / panel class。
 - 关联：`src/components/common/PlatformMudPointConfirmDialog.tsx`、`src/components/common/PlatformStatusDialog.tsx`、`src/components/unified-creation/workspaces/PuzzleCreationWorkspace.tsx`、`src/components/unified-creation/workspaces/Match3DCreationWorkspace.tsx`。
 
+## 拼图结果页关卡图不要裁切，嵌套图片预览要高于详情弹窗
+
+- 现象：拼图结果页“拼图关卡”列表里的关卡图底部被裁掉；进入关卡详情后点击画面图，看起来没有打开全屏预览。
+- 原因：关卡列表复用 `PlatformMediaFrame aspect="standard"` 默认 `object-cover`，方图或竖向生成图会在 4:3 框内被裁切；关卡详情弹窗自身层级高于 `CreativeImageInputPanel` 默认图片预览层级，预览实际打开但被压在详情弹窗后面。
+- 处理：结果页关卡缩略图显式传 `imageClassName="h-full w-full object-contain"` 保留完整画面；`CreativeImageInputPanel` 提供 `mainImagePreviewZIndexClassName`，嵌套在高层级弹窗内时由调用方传更高层级。
+- 验证：聚焦测试断言关卡缩略图使用 `object-contain` 且没有 `object-cover`，并断言关卡详情内主图预览 overlay 层级高于详情弹窗；浏览器里检查列表完整显示图片，详情内点击画面图能打开可见预览。
+- 关联：`src/components/puzzle-result/PuzzleResultView.tsx`、`src/components/common/CreativeImageInputPanel.tsx`、`src/components/puzzle-result/PuzzleResultView.test.tsx`。
+
 ## 玩法入口分类字段缺失要前端兜底
 
 - 现象：平台创作入口初始化时，`platformEntryCreationTypes.ts` 直接对 `creationTypes[].categoryId` / `categoryLabel` 调 `trim()`，一旦后端旧数据、局部 mock 或异常返回里缺字段，整个创作页会在 `derivePlatformCreationTypes(...)` 里直接炸掉。
diff --git a/src/components/common/CreativeImageInputPanel.tsx b/src/components/common/CreativeImageInputPanel.tsx
index 524bf118..feff331a 100644
--- a/src/components/common/CreativeImageInputPanel.tsx
+++ b/src/components/common/CreativeImageInputPanel.tsx
@@ -52,6 +52,7 @@ export type CreativeImageInputPanelProps = {
   uploadedImageSrc: string;
   uploadedImageAlt: string;
   uploadedImageRefreshKey?: string | number | null;
+  mainImagePreviewZIndexClassName?: string;
   mainImageMeta?: ReactNode;
   mainImageInputId: string;
   mainImageAccept?: string;
@@ -100,6 +101,7 @@ export function CreativeImageInputPanel({
   uploadedImageSrc,
   uploadedImageAlt,
   uploadedImageRefreshKey = null,
+  mainImagePreviewZIndexClassName = 'z-[82]',
   mainImageMeta = null,
   mainImageInputId,
   mainImageAccept = DEFAULT_IMAGE_ACCEPT,
@@ -524,7 +526,7 @@ export function CreativeImageInputPanel({
         }
         closeVariant="profileCompact"
         size="xl"
-        zIndexClassName="z-[82]"
+        zIndexClassName={mainImagePreviewZIndexClassName}
         overlayClassName="px-4 py-6"
         panelClassName="platform-remap-surface rounded-[1.35rem] p-3 shadow-[0_24px_70px_rgba(15,23,42,0.22)]"
         headerClassName="mb-3 items-center border-b-0 px-1 py-0"
diff --git a/src/components/puzzle-result/PuzzleResultView.test.tsx b/src/components/puzzle-result/PuzzleResultView.test.tsx
index ac938959..ad6d3514 100644
--- a/src/components/puzzle-result/PuzzleResultView.test.tsx
+++ b/src/components/puzzle-result/PuzzleResultView.test.tsx
@@ -274,6 +274,8 @@ describe('PuzzleResultView', () => {
     const levelImage = screen.getByRole('img', { name: '雨夜猫街' });
     const mediaFrame = levelImage.closest('div.relative');
     expect(mediaFrame?.className).toContain('aspect-[4/3]');
+    expect(levelImage.className).toContain('object-contain');
+    expect(levelImage.className).not.toContain('object-cover');
     expect(mediaFrame?.className).not.toContain(
       'bg-[var(--platform-subpanel-fill)]',
     );
@@ -552,6 +554,7 @@ describe('PuzzleResultView', () => {
     const imagePreviewDialog = screen.getByRole('dialog', {
       name: '查看关卡图片',
     });
+    expect(imagePreviewDialog.parentElement?.className).toContain('z-[150]');
     expect(within(imagePreviewDialog).getByAltText('暖灯猫街')).toBeTruthy();
     fireEvent.click(
       within(imagePreviewDialog).getByRole('button', {
diff --git a/src/components/puzzle-result/PuzzleResultView.tsx b/src/components/puzzle-result/PuzzleResultView.tsx
index 9f4a52e8..ea2ee1e9 100644
--- a/src/components/puzzle-result/PuzzleResultView.tsx
+++ b/src/components/puzzle-result/PuzzleResultView.tsx
@@ -724,6 +724,7 @@ function PuzzleLevelDetailDialog({
             promptReferenceImages={promptReferenceImages}
             promptReferenceLimit={PUZZLE_LEVEL_PROMPT_REFERENCE_LIMIT}
             imageLimitHint="图片≤6MB"
+            mainImagePreviewZIndexClassName="z-[150]"
             imageModelPicker={
               <PuzzleImageModelPicker
                 value={imageModel}
@@ -1069,6 +1070,7 @@ function PuzzleLevelListTab({
                   fallbackLabel="暂无正式图"
                   aspect="standard"
                   surface="none"
+                  imageClassName="h-full w-full object-contain"
                   className="rounded-none"
                   fallbackClassName="tracking-normal text-[var(--platform-text-soft)]"
                   previewOverlay={