diff --git a/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx b/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx
index a6885711a..5f11e3f37 100644
--- a/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx
+++ b/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx
@@ -391,14 +391,24 @@ export function GameDistributionPublishPanel({
               </div>
               <label>
                 游戏封面（必需）
-                <input
-                  ref={coverInputRef}
-                  type="file"
-                  accept={PANEL_IMAGE_ACCEPT}
-                  onChange={(event) => {
-                    void handleCoverSelected(event.target.files?.[0] ?? null);
-                  }}
-                />
+                {/*
+                  原生 file 控件在清空 value 后会显示“未选择任何文件”，与下方提示互相矛盾；
+                  上传后必须清空 value 才能重选同一张图，所以这里改用自定义触发按钮。
+                */}
+                <span className="game-distribution-publish-panel__picker">
+                  <input
+                    ref={coverInputRef}
+                    type="file"
+                    accept={PANEL_IMAGE_ACCEPT}
+                    disabled={busy}
+                    onChange={(event) => {
+                      void handleCoverSelected(event.target.files?.[0] ?? null);
+                    }}
+                  />
+                  <span className="game-distribution-publish-panel__pick">
+                    {cover ? '更换封面图片' : '选择封面图片'}
+                  </span>
+                </span>
                 <span className="game-distribution-publish-panel__hint">
                   {cover
                     ? `已选择「${cover.name}」；重新选择即可替换封面。`
@@ -417,20 +427,27 @@ export function GameDistributionPublishPanel({
             </div>
             <label>
               {`游戏截图（可选，最多 ${MAX_AGC_GAME_SCREENSHOTS} 张）`}
-              <input
-                ref={screenshotInputRef}
-                type="file"
-                accept={PANEL_IMAGE_ACCEPT}
-                multiple
-                disabled={
-                  busy || screenshots.length >= MAX_AGC_GAME_SCREENSHOTS
-                }
-                onChange={(event) => {
-                  void handleScreenshotsSelected(
-                    Array.from(event.target.files ?? []),
-                  );
-                }}
-              />
+              <span className="game-distribution-publish-panel__picker">
+                <input
+                  ref={screenshotInputRef}
+                  type="file"
+                  accept={PANEL_IMAGE_ACCEPT}
+                  multiple
+                  disabled={
+                    busy || screenshots.length >= MAX_AGC_GAME_SCREENSHOTS
+                  }
+                  onChange={(event) => {
+                    void handleScreenshotsSelected(
+                      Array.from(event.target.files ?? []),
+                    );
+                  }}
+                />
+                <span className="game-distribution-publish-panel__pick">
+                  {screenshots.length >= MAX_AGC_GAME_SCREENSHOTS
+                    ? '截图已满 6 张'
+                    : '添加截图'}
+                </span>
+              </span>
               <span className="game-distribution-publish-panel__hint">
                 截图会按选择顺序展示在游戏详情页；不需要可以留空。
               </span>
diff --git a/apps/ai-game-creator-shell/src/styles.css b/apps/ai-game-creator-shell/src/styles.css
index b306ba2d9..aeef85792 100644
--- a/apps/ai-game-creator-shell/src/styles.css
+++ b/apps/ai-game-creator-shell/src/styles.css
@@ -3907,6 +3907,59 @@ textarea {
   font: inherit;
 }
 
+.game-distribution-publish-panel__picker {
+  position: relative;
+  display: inline-flex;
+  align-items: center;
+}
+
+/* 透明 input 覆盖在触发按钮上：真实点击永远命中原生控件，自定义文案只负责显示。 */
+.game-distribution-publish-panel__picker input[type='file'] {
+  position: absolute;
+  inset: 0;
+  width: 100%;
+  height: 100%;
+  margin: 0;
+  padding: 0;
+  border: 0;
+  opacity: 0;
+  cursor: pointer;
+}
+
+.game-distribution-publish-panel__pick {
+  display: inline-flex;
+  pointer-events: none;
+  align-items: center;
+  padding: 6px 14px;
+  border: 1px solid rgb(104 77 57 / 18%);
+  border-radius: 999px;
+  background: rgb(255 255 255 / 76%);
+  color: var(--platform-text-strong);
+  font-size: 12px;
+  font-weight: 700;
+  cursor: pointer;
+  transition: 160ms ease;
+}
+
+.game-distribution-publish-panel__picker:hover
+  .game-distribution-publish-panel__pick {
+  border-color: #a8663d;
+}
+
+.game-distribution-publish-panel__picker
+  input[type='file']:focus-visible
+  + .game-distribution-publish-panel__pick {
+  outline: 2px solid rgb(168 102 61 / 24%);
+  outline-offset: 2px;
+}
+
+.game-distribution-publish-panel__picker
+  input[type='file']:disabled
+  + .game-distribution-publish-panel__pick {
+  opacity: 0.55;
+  cursor: not-allowed;
+}
+
 .game-distribution-publish-panel__cover {
   display: grid;
   grid-template-columns: minmax(0, 168px) minmax(0, 1fr);
diff --git a/docs/project-memory/plans/【实施计划】游戏分发阶段A领域合同-2026-09-19.md b/docs/project-memory/plans/【实施计划】游戏分发阶段A领域合同-2026-09-19.md
index 5f2425dba..a174b0ff2 100644
--- a/docs/project-memory/plans/【实施计划】游戏分发阶段A领域合同-2026-09-19.md
+++ b/docs/project-memory/plans/【实施计划】游戏分发阶段A领域合同-2026-09-19.md
@@ -98,6 +98,8 @@
 
 - 真实本地栈媒体验证（2026-09-20，`npm run dev:api-server` + `dev:web`，api-server `127.0.0.1:12401`、SpacetimeDB `127.0.0.1:12402`、真实 dev OSS 桶）：`E2E_ADMIN_USER=… E2E_ADMIN_PASSWORD=… npm run check:game-distribution-media-e2e`（`scripts/check-game-distribution-media-e2e.mjs`）27 项全部通过——真实直传封面与 2 张截图素材、缺封面 400、截图 7 张 400、不存在素材 400（创建游戏与创建版本两处）、他人素材 403、创建游戏/版本/上传/送审（202 + `pending_review`）、作者回读拿到 `frozenMetadata` 且素材 ID 与顺序一致、待审期间公开目录不含该游戏且封面匿名读返回 404、管理员审核通过后公开投影带封面与截图对象键且不含素材 ID、匿名 `read-url` 对封面与截图都返回签名地址、发行网关 `index.html` 与 `assets/app.js` 均 200 且带 nosniff。
 - 真实浏览器展示验证（同一栈，headless Chromium `390x844` 与 `1280x900`）：`/games` 卡片渲染真实封面签名地址（无占位回退），`/games/detail?id=…` hero 显示封面、缩略图条渲染「封面 + 2 张截图」，点击第 3 张后 `aria-pressed` 与 hero 图片同步切换；移动端布局正常。截图存于 `~/data/tmp/gd3/`（不入库）。
+- 网页发布页真实上传验证（同一栈 + headless Chromium）：在 `/games/publish` 里用作者会话填写资料、选择真实 PNG 封面与 ZIP 并提交，页面返回「已提交审核」；随后 `my-games` 显示该游戏 `pending_review`，版本回读的 `frozenMetadata.coverAssetId` / `coverObjectKey` 正是本次浏览器上传的素材，证明网页端封面直传（凭证 → OSS → confirm）与冻结链路真实可用。
+- 发布资料入口交互打磨：原生 file 控件在上传后清空 value 时会显示「未选择任何文件」，与「已选择」提示互相矛盾；网页发布页与 AGC 面板都改成透明 input 覆盖自定义胶囊按钮（点击命中原生控件，文案显示「选择/更换封面图片」「添加截图」），并在验证中用 `elementFromPoint` 确认点击命中的是 `input[type=file]`。
 - 创建游戏同步校验素材归属：此前 `POST /api/game-distribution/games` 只校验「封面必填 / 截图 ≤6 / ID 非空」，素材是否存在与是否属于当前作者要等到创建版本才失败，游戏行会先落一个无效素材 ID；现在创建游戏与创建版本都走 `resolve_owned_game_media`，不存在返回 400、他人素材返回 403。
 
 ## 尚未完成
diff --git a/src/components/game-distribution/GamePublishPage.tsx b/src/components/game-distribution/GamePublishPage.tsx
index 3021d9054..c810b6374 100644
--- a/src/components/game-distribution/GamePublishPage.tsx
+++ b/src/components/game-distribution/GamePublishPage.tsx
@@ -851,15 +851,26 @@ export function GamePublishPage({
             <div className="game-publish-media__copy">
               <label className="game-publish-field">
                 游戏封面（必需）
-                <input
-                  ref={coverInputRef}
-                  type="file"
-                  accept={GAME_PUBLISH_IMAGE_ACCEPT}
-                  disabled={isResumingDraft || isSubmitting || isUploadingAsset}
-                  onChange={(event) => {
-                    void handleCoverSelected(event.target.files?.[0] ?? null);
-                  }}
-                />
+                {/*
+                  原生 file 控件在清空 value 后会显示“未选择任何文件”，与下方的“已选择”提示互相
+                  矛盾；上传后必须清空 value 才能重选同一张图，所以这里改用自定义触发按钮。
+                */}
+                <span className="game-publish-media__picker">
+                  <input
+                    ref={coverInputRef}
+                    type="file"
+                    accept={GAME_PUBLISH_IMAGE_ACCEPT}
+                    disabled={
+                      isResumingDraft || isSubmitting || isUploadingAsset
+                    }
+                    onChange={(event) => {
+                      void handleCoverSelected(event.target.files?.[0] ?? null);
+                    }}
+                  />
+                  <span className="game-publish-media__pick">
+                    {coverAsset ? '更换封面图片' : '选择封面图片'}
+                  </span>
+                </span>
                 <span className="game-publish-hint">
                   {coverAsset?.assetObjectId
                     ? `已选择「${coverAsset.name}」；重新选择即可替换本次发布的封面。`
@@ -883,23 +894,30 @@ export function GamePublishPage({
           <div className="game-publish-media__screenshots">
             <label className="game-publish-field">
               {`游戏截图（可选，最多 ${MAX_GAME_SCREENSHOTS} 张）`}
-              <input
-                ref={screenshotInputRef}
-                type="file"
-                accept={GAME_PUBLISH_IMAGE_ACCEPT}
-                multiple
-                disabled={
-                  isResumingDraft ||
-                  isSubmitting ||
-                  isUploadingAsset ||
-                  screenshotAssets.length >= MAX_GAME_SCREENSHOTS
-                }
-                onChange={(event) => {
-                  void handleScreenshotsSelected(
-                    Array.from(event.target.files ?? []),
-                  );
-                }}
-              />
+              <span className="game-publish-media__picker">
+                <input
+                  ref={screenshotInputRef}
+                  type="file"
+                  accept={GAME_PUBLISH_IMAGE_ACCEPT}
+                  multiple
+                  disabled={
+                    isResumingDraft ||
+                    isSubmitting ||
+                    isUploadingAsset ||
+                    screenshotAssets.length >= MAX_GAME_SCREENSHOTS
+                  }
+                  onChange={(event) => {
+                    void handleScreenshotsSelected(
+                      Array.from(event.target.files ?? []),
+                    );
+                  }}
+                />
+                <span className="game-publish-media__pick">
+                  {screenshotAssets.length >= MAX_GAME_SCREENSHOTS
+                    ? '截图已满 6 张'
+                    : '添加截图'}
+                </span>
+              </span>
               <span className="game-publish-hint">
                 截图会按选择顺序展示在详情页；不需要可以留空。
               </span>
diff --git a/src/components/game-distribution/gameDistribution.css b/src/components/game-distribution/gameDistribution.css
index 4114c1bcb..c24e193f5 100644
--- a/src/components/game-distribution/gameDistribution.css
+++ b/src/components/game-distribution/gameDistribution.css
@@ -924,6 +924,52 @@
   font-size: 0.72rem;
   font-weight: 600;
 }
+.game-publish-media__picker {
+  position: relative;
+  display: inline-flex;
+  align-items: center;
+}
+/* 透明 input 覆盖在触发按钮上：真实点击永远命中原生控件，自定义文案只负责显示。 */
+.game-publish-media__picker input[type='file'] {
+  position: absolute;
+  inset: 0;
+  width: 100%;
+  height: 100%;
+  margin: 0;
+  padding: 0;
+  border: 0;
+  opacity: 0;
+  cursor: pointer;
+}
+.game-publish-media__pick {
+  display: inline-flex;
+  pointer-events: none;
+  align-items: center;
+  padding: 0.35rem 0.85rem;
+  border: 1px solid var(--platform-surface-border);
+  border-radius: 999px;
+  background: var(--platform-panel-fill);
+  color: var(--platform-text-strong);
+  font-size: 0.74rem;
+  font-weight: 600;
+  cursor: pointer;
+  transition: 160ms ease;
+}
+.game-publish-media__picker:hover .game-publish-media__pick {
+  border-color: rgba(199, 101, 61, 0.45);
+}
+.game-publish-media__picker
+  input[type='file']:focus-visible
+  + .game-publish-media__pick {
+  outline: 2px solid rgba(199, 101, 61, 0.35);
+  outline-offset: 2px;
+}
+.game-publish-media__picker
+  input[type='file']:disabled
+  + .game-publish-media__pick {
+  opacity: 0.55;
+  cursor: not-allowed;
+}
 .game-publish-media__screenshots {
   display: grid;
   gap: 0.6rem;