修改完成待测试

pages/family/platform-videos.vue

@@ -40,12 +40,21 @@
             />
             <view class="video-card__play" aria-hidden="true"></view>
           </view>
-          <video
+          <view
             v-else
-            :src="video.videoFile.accessUrl"
-            controls
-            class="video-card__player"
-          />
+            class="video-card__cover-button video-card__cover-placeholder"
+            role="button"
+            :aria-label="`播放${video.title}`"
+            hover-class="action-hover"
+            @click="openVerticalViewer(video)"
+          >
+            <image
+              class="video-card__placeholder-seal"
+              src="/static/assets/foundation/transparent/brand-seal.png"
+              mode="aspectFit"
+            />
+            <view class="video-card__play" aria-hidden="true"></view>
+          </view>
           <text class="video-card__title">{{ video.title }}</text>
           <text v-if="video.description" class="video-card__copy">{{ video.description }}</text>
           <text v-if="video.startAt" class="video-card__meta">发布时间：{{ video.startAt }}</text>
@@ -423,12 +432,6 @@ onUnload(() => {
 .video-card {
   padding: 28rpx;
 }
-.video-card__player {
-  width: 100%;
-  height: 360rpx;
-  border-radius: 10rpx;
-  background: #1f1b17;
-}
 .video-card__cover-button {
   position: relative;
   width: 100%;
@@ -437,6 +440,17 @@ onUnload(() => {
   background: #1f1b17;
   overflow: hidden;
 }
+.video-card__cover-placeholder {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: linear-gradient(145deg, #f4e5cd, #d8b77c);
+}
+.video-card__placeholder-seal {
+  width: 132rpx;
+  height: 152rpx;
+  opacity: .72;
+}
 .video-card__cover {
   width: 100%;
   height: 100%;