diff --git a/frontend/app/web-gold/src/views/kling/components/TimelinePanel.vue b/frontend/app/web-gold/src/views/kling/components/TimelinePanel.vue
index f8d5afacec..8ab188e43d 100644
--- a/frontend/app/web-gold/src/views/kling/components/TimelinePanel.vue
+++ b/frontend/app/web-gold/src/views/kling/components/TimelinePanel.vue
@@ -1,94 +1,94 @@
 <template>
-  <div class="timeline-panel">
-    <div class="timeline-header">
-      <span class="timeline-title">时间轴对比</span>
-      <span v-if="showDurations" class="duration-badge">
-        人脸 {{ formatDuration(faceDurationMs) }}
+  <div class="bg-[#fafbfc] border border-[#e5e7eb] rounded-md px-4 py-3 mt-2">
+    <div class="flex justify-between items-center mb-2.5">
+      <span class="text-[13px] font-semibold text-gray-800">时间轴对比</span>
+      <span v-if="showDurations" class="flex items-center gap-1.5 text-[13px] text-gray-600 tabular-nums">
+        <span class="flex items-center gap-[5px]">
+          <span class="w-[7px] h-[7px] rounded-sm bg-blue-500"></span>
+          视频 {{ formatDuration(faceDurationMs) }}
+        </span>
         <template v-if="audioDurationMs > 0">
-          <span class="divider"></span>
-          音频 {{ formatDuration(audioDurationMs) }}
+          <span class="text-gray-400 text-xs">/</span>
+          <span class="flex items-center gap-[5px]">
+            <span class="w-[7px] h-[7px] rounded-sm bg-emerald-500"></span>
+            音频 {{ formatDuration(audioDurationMs) }}
+          </span>
         </template>
       </span>
     </div>
 
     <!-- 刻度尺 -->
-    <div class="timeline-ruler">
+    <div class="relative h-5 mb-1.5 ml-12">
       <div
         v-for="mark in rulerMarks"
         :key="mark.time"
-        class="ruler-mark"
+        class="absolute -translate-x-1/2 flex flex-col items-center"
         :style="{ left: mark.position + '%' }"
       >
-        <span class="ruler-label">{{ mark.label }}</span>
-        <span class="ruler-tick"></span>
-      </div>
-
-      <!-- 音频结束位置标记 -->
-      <div
-        v-if="audioDurationMs > 0 && isExceed"
-        class="audio-end-marker"
-        :style="{ left: audioEndPosition + '%' }"
-      >
-        <span class="audio-marker-label">{{ (audioDurationMs / 1000).toFixed(1) }}s</span>
-        <span class="audio-marker-line"></span>
+        <span class="text-[11px] text-gray-400 leading-none mb-1">{{ mark.label }}</span>
+        <span class="block w-px h-1 bg-[#e5e7eb]"></span>
       </div>
     </div>
 
     <!-- 轨道区域 -->
-    <div class="timeline-tracks">
+    <div class="flex flex-col gap-1.5">
       <!-- 视频轨道 -->
-      <div class="track">
-        <div class="track-info">
-          <span class="track-icon">📹</span>
-          <span class="track-label">视频</span>
+      <div class="flex items-center gap-2">
+        <div class="w-9 shrink-0">
+          <span class="text-xs text-gray-600 font-medium">视频</span>
         </div>
-        <div class="track-bar">
+        <div class="flex-1 h-6 bg-[#f1f3f5] rounded relative overflow-hidden flex items-center">
           <div
-            class="track-fill video-fill"
+            class="h-full rounded flex items-center justify-center transition-[width] duration-300 min-w-[2px] bg-blue-500"
             :style="{ width: videoBarWidth + '%' }"
           >
-            <span v-if="videoBarWidth > 15" class="track-time">{{ formatDuration(faceDurationMs) }}</span>
+            <span v-if="videoBarWidth > 20" class="text-xs text-white font-medium tracking-wide">{{ formatDuration(faceDurationMs) }}</span>
           </div>
         </div>
       </div>
 
       <!-- 音频轨道 -->
-      <div class="track">
-        <div class="track-info">
-          <span class="track-icon">🎙️</span>
-          <span class="track-label">音频</span>
+      <div class="flex items-center gap-2">
+        <div class="w-9 shrink-0">
+          <span class="text-xs text-gray-600 font-medium">音频</span>
         </div>
-        <div class="track-bar">
+        <div class="flex-1 h-6 bg-[#f1f3f5] rounded relative overflow-hidden flex items-center">
           <div
             v-if="audioDurationMs > 0"
-            class="track-fill audio-fill"
-            :class="{ 'audio-exceed': isExceed }"
+            class="h-full rounded flex items-center justify-center transition-[width] duration-300 min-w-[2px]"
+            :class="isExceed ? 'bg-red-500' : 'bg-emerald-500'"
             :style="{ width: audioBarWidth + '%' }"
           >
-            <span v-if="audioBarWidth > 15" class="track-time">{{ formatDuration(audioDurationMs) }}</span>
+            <span v-if="audioBarWidth > 20" class="text-xs text-white font-medium tracking-wide">{{ formatDuration(audioDurationMs) }}</span>
           </div>
-          <span v-else class="track-placeholder">等待生成音频</span>
+          <span v-else class="text-xs text-gray-400 pl-2.5">等待生成音频</span>
         </div>
       </div>
     </div>
 
     <!-- 校验错误提示 -->
-    <div v-if="validationError" class="timeline-diff error">
-      <Icon icon="lucide:x-circle" class="diff-icon" />
+    <div v-if="validationError" class="flex items-center gap-1.5 mt-2.5 px-2.5 py-2 rounded text-xs font-medium text-red-500 bg-red-50 border border-red-200">
+      <Icon icon="lucide:x-circle" class="text-sm shrink-0" />
       <span>{{ validationError }}</span>
     </div>
     <!-- 时长差异提示 -->
-    <div v-else-if="audioDurationMs > 0" class="timeline-diff" :class="diffStatus">
+    <div v-else-if="audioDurationMs > 0" class="flex items-center gap-1.5 mt-2.5 px-2.5 py-2 rounded text-xs font-medium border border-transparent"
+      :class="{
+        'bg-[#f0fdf4] border-[#bbf7d0] text-emerald-600': diffStatus === 'match',
+        'bg-red-50 border-red-200 text-red-500': diffStatus === 'exceed',
+        'bg-amber-50 border-amber-200 text-amber-500': diffStatus === 'short',
+      }"
+    >
       <template v-if="diffStatus === 'match'">
-        <Icon icon="lucide:check-circle" class="diff-icon" />
+        <Icon icon="lucide:check-circle" class="text-sm shrink-0" />
         <span>时长匹配良好，可以生成</span>
       </template>
       <template v-else-if="diffStatus === 'exceed'">
-        <Icon icon="lucide:alert-circle" class="diff-icon" />
+        <Icon icon="lucide:alert-circle" class="text-sm shrink-0" />
         <span>音频超出 {{ formatDuration(diffMs) }}，建议缩短文案</span>
       </template>
       <template v-else-if="diffStatus === 'short'">
-        <Icon icon="lucide:info" class="diff-icon" />
+        <Icon icon="lucide:info" class="text-sm shrink-0" />
         <span>音频较短，可适当增加文案</span>
       </template>
     </div>
@@ -127,10 +127,6 @@ const audioBarWidth = computed(() =>
   Math.min(100, (props.audioDurationMs / maxDuration.value) * 100)
 )
 
-const audioEndPosition = computed(() =>
-  Math.min(100, (props.audioDurationMs / maxDuration.value) * 100)
-)
-
 const isExceed = computed(() => props.audioDurationMs > props.faceDurationMs)
 
 const diffMs = computed(() => Math.abs(props.audioDurationMs - props.faceDurationMs))
@@ -178,235 +174,3 @@ function calculateInterval(duration: number): number {
 
 const formatDuration = formatDurationMs
 </script>
-
-<style scoped lang="less">
-// 蓝紫主题配色 - 与主页面协调
-@text-primary: #1e293b;
-@text-secondary: #64748b;
-@text-tertiary: #94a3b8;
-@bg-subtle: rgba(59, 130, 246, 0.04);
-@bg-hover: rgba(59, 130, 246, 0.08);
-@border-light: rgba(59, 130, 246, 0.1);
-@border-medium: rgba(59, 130, 246, 0.15);
-@accent-blue: #3b82f6;
-@accent-purple: #8b5cf6;
-@accent-green: #10b981;
-@accent-red: #ef4444;
-@accent-orange: #f59e0b;
-
-.timeline-panel {
-  background: @bg-subtle;
-  border-radius: 10px;
-  padding: 14px 18px;
-  margin-top: 8px;
-}
-
-.timeline-header {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  margin-bottom: 16px;
-}
-
-.timeline-title {
-  font-size: 12px;
-  font-weight: 600;
-  color: @text-secondary;
-  text-transform: uppercase;
-  letter-spacing: 0.5px;
-}
-
-.duration-badge {
-  display: flex;
-  align-items: center;
-  gap: 8px;
-  font-size: 12px;
-  color: @text-tertiary;
-
-  .divider {
-    width: 4px;
-    height: 4px;
-    background: @border-medium;
-    border-radius: 50%;
-  }
-}
-
-// 刻度尺
-.timeline-ruler {
-  position: relative;
-  height: 18px;
-  margin-bottom: 10px;
-  margin-left: 80px;
-}
-
-.ruler-mark {
-  position: absolute;
-  transform: translateX(-50%);
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-}
-
-.ruler-label {
-  font-size: 10px;
-  color: @text-tertiary;
-  margin-bottom: 2px;
-}
-
-.ruler-tick {
-  display: block;
-  width: 1px;
-  height: 4px;
-  background: @border-medium;
-}
-
-// 音频结束位置标记
-.audio-end-marker {
-  position: absolute;
-  transform: translateX(-50%);
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  z-index: 10;
-  top: 0;
-}
-
-.audio-marker-label {
-  font-size: 9px;
-  font-weight: 600;
-  color: @accent-red;
-  background: rgba(235, 87, 87, 0.1);
-  padding: 1px 5px;
-  border-radius: 3px;
-  white-space: nowrap;
-  margin-bottom: 2px;
-}
-
-.audio-marker-line {
-  width: 1px;
-  height: 6px;
-  background: @accent-red;
-}
-
-// 轨道区域
-.timeline-tracks {
-  display: flex;
-  flex-direction: column;
-  gap: 8px;
-}
-
-.track {
-  display: flex;
-  align-items: center;
-  gap: 12px;
-}
-
-.track-info {
-  display: flex;
-  align-items: center;
-  gap: 6px;
-  width: 68px;
-  flex-shrink: 0;
-}
-
-.track-icon {
-  font-size: 14px;
-  line-height: 1;
-}
-
-.track-label {
-  font-size: 12px;
-  color: @text-secondary;
-  font-weight: 500;
-}
-
-.track-bar {
-  flex: 1;
-  height: 22px;
-  background: rgba(55, 53, 47, 0.06);
-  border-radius: 4px;
-  position: relative;
-  overflow: hidden;
-  display: flex;
-  align-items: center;
-}
-
-.track-fill {
-  height: 100%;
-  border-radius: 4px;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
-  position: relative;
-}
-
-.track-time {
-  font-size: 10px;
-  color: rgba(255, 255, 255, 0.95);
-  font-weight: 600;
-  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
-  letter-spacing: 0.3px;
-}
-
-.track-placeholder {
-  font-size: 11px;
-  color: @text-tertiary;
-  padding-left: 14px;
-}
-
-.video-fill {
-  background: linear-gradient(90deg, @accent-blue 0%, @accent-purple 100%);
-}
-
-.audio-fill {
-  background: linear-gradient(90deg, @accent-green 0%, #059669 100%);
-
-  &.audio-exceed {
-    background: linear-gradient(90deg, @accent-red 0%, #dc2626 100%);
-    animation: pulse-warning 2s ease-in-out infinite;
-  }
-}
-
-@keyframes pulse-warning {
-  0%, 100% { opacity: 1; }
-  50% { opacity: 0.75; }
-}
-
-// 差异提示
-.timeline-diff {
-  display: flex;
-  align-items: center;
-  gap: 8px;
-  margin-top: 12px;
-  padding: 10px 14px;
-  border-radius: 8px;
-  font-size: 12px;
-  font-weight: 500;
-
-  .diff-icon {
-    font-size: 14px;
-    flex-shrink: 0;
-  }
-
-  &.match {
-    background: rgba(16, 185, 129, 0.08);
-    color: @accent-green;
-  }
-
-  &.exceed {
-    background: rgba(239, 68, 68, 0.08);
-    color: @accent-red;
-  }
-
-  &.short {
-    background: rgba(245, 158, 11, 0.08);
-    color: @accent-orange;
-  }
-
-  &.error {
-    background: rgba(239, 68, 68, 0.12);
-    color: @accent-red;
-  }
-}
-</style>
diff --git a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/api/file/FileApi.java b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/api/file/FileApi.java
index 03ffd82744..953d1c5bcd 100644
--- a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/api/file/FileApi.java
+++ b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/api/file/FileApi.java
@@ -52,6 +52,18 @@ public interface FileApi {
     String presignGetUrl(@NotEmpty(message = "URL 不能为空") String url,
                          Integer expirationSeconds);
 
+    /**
+     * 生成文件预签名地址（带 Content-Type），用于读取
+     *
+     * @param url 完整的文件访问地址
+     * @param expirationSeconds 访问有效期，单位秒
+     * @param contentType 响应的 Content-Type，为 null 时不设置
+     * @return 文件预签名地址
+     */
+    String presignGetUrl(@NotEmpty(message = "URL 不能为空") String url,
+                         Integer expirationSeconds,
+                         String contentType);
+
     /**
      * 生成文件预签名地址（带 OSS 处理参数），用于读取
      * 用于阿里云 OSS 视频截帧等图片处理场景
diff --git a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/api/file/FileApiImpl.java b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/api/file/FileApiImpl.java
index db3dd7f887..97996530a1 100644
--- a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/api/file/FileApiImpl.java
+++ b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/api/file/FileApiImpl.java
@@ -31,7 +31,12 @@ public class FileApiImpl implements FileApi {
 
     @Override
     public String presignGetUrl(String url, Integer expirationSeconds) {
-        return fileService.presignGetUrl(url, expirationSeconds);
+        return presignGetUrl(url, expirationSeconds, null);
+    }
+
+    @Override
+    public String presignGetUrl(String url, Integer expirationSeconds, String contentType) {
+        return fileService.presignGetUrl(url, expirationSeconds, contentType);
     }
 
     @Override
diff --git a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/framework/file/core/client/FileClient.java b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/framework/file/core/client/FileClient.java
index 7653669de0..673b921778 100644
--- a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/framework/file/core/client/FileClient.java
+++ b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/framework/file/core/client/FileClient.java
@@ -71,6 +71,18 @@ public interface FileClient {
      * @return 文件预签名地址
      */
     default String presignGetUrl(String url, Integer expirationSeconds) {
+        return presignGetUrl(url, expirationSeconds, null);
+    }
+
+    /**
+     * 生成文件预签名地址（带 Content-Type），用于读取
+     *
+     * @param url 完整的文件访问地址
+     * @param expirationSeconds 访问有效期，单位秒
+     * @param contentType 响应的 Content-Type，为 null 时不设置
+     * @return 文件预签名地址
+     */
+    default String presignGetUrl(String url, Integer expirationSeconds, String contentType) {
         throw new UnsupportedOperationException("不支持的操作");
     }
 
diff --git a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/framework/file/core/client/s3/S3FileClient.java b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/framework/file/core/client/s3/S3FileClient.java
index 31b00ff471..e5528b02d5 100644
--- a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/framework/file/core/client/s3/S3FileClient.java
+++ b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/framework/file/core/client/s3/S3FileClient.java
@@ -200,12 +200,19 @@ public class S3FileClient extends AbstractFileClient<S3FileClientConfig> {
     }
 
     @Override
-    public String presignGetUrl(String url, Integer expirationSeconds) {
-        return presignGetUrlWithProcess(url, expirationSeconds, null);
+    public String presignGetUrl(String url, Integer expirationSeconds, String contentType) {
+        return presignGetUrlWithProcess(url, expirationSeconds, null, contentType);
     }
 
     @Override
     public String presignGetUrlWithProcess(String url, Integer expirationSeconds, String processParam) {
+        return presignGetUrlWithProcess(url, expirationSeconds, processParam, null);
+    }
+
+    /**
+     * 生成文件预签名地址（带 OSS 处理参数和 Content-Type），用于读取
+     */
+    private String presignGetUrlWithProcess(String url, Integer expirationSeconds, String processParam, String contentType) {
         // 1. 将 url 转换为 path（支持 CDN 域名和 OSS 原始域名）
         String path = extractPathFromUrl(url);
         String decodedPath = URLUtil.decode(path, StandardCharsets.UTF_8);
@@ -213,11 +220,17 @@ public class S3FileClient extends AbstractFileClient<S3FileClientConfig> {
         // 2. 公开访问：无需签名，直接拼接参数
         if (!BooleanUtil.isFalse(config.getEnablePublicAccess())) {
             String encodedPath = UriUtils.encodePath(decodedPath, StandardCharsets.UTF_8);
-            String resultUrl = config.getDomain() + "/" + encodedPath;
+            StringBuilder resultUrl = new StringBuilder(config.getDomain()).append("/").append(encodedPath);
+            char separator = '?';
             if (StrUtil.isNotBlank(processParam)) {
-                resultUrl = resultUrl + "?x-oss-process=" + processParam;
+                resultUrl.append(separator).append("x-oss-process=").append(processParam);
+                separator = '&';
             }
-            return resultUrl;
+            if (StrUtil.isNotBlank(contentType)) {
+                resultUrl.append(separator).append("response-content-type=").append(
+                        URLUtil.encode(contentType, StandardCharsets.UTF_8));
+            }
+            return resultUrl.toString();
         }
 
         // 3. 私有访问：生成预签名 URL（需要将处理参数包含在签名中）
@@ -229,10 +242,14 @@ public class S3FileClient extends AbstractFileClient<S3FileClientConfig> {
             com.aliyun.oss.model.GeneratePresignedUrlRequest request =
                     new com.aliyun.oss.model.GeneratePresignedUrlRequest(config.getBucket(), decodedPath, HttpMethod.GET);
             request.setExpiration(expirationDate);
-            // 关键：将 x-oss-process 参数包含在签名中
+            // 将 x-oss-process 参数包含在签名中
             if (StrUtil.isNotBlank(processParam)) {
                 request.addQueryParameter("x-oss-process", processParam);
             }
+            // 设置 response-content-type，确保浏览器能正确渲染
+            if (StrUtil.isNotBlank(contentType)) {
+                request.addQueryParameter("response-content-type", contentType);
+            }
             signedUrl = aliyunOssClient.generatePresignedUrl(request).toString();
         } else {
             // 非阿里云不支持 OSS 处理参数，直接返回普通预签名 URL
diff --git a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileService.java b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileService.java
index c7f8d99a6b..e3da4b1d05 100644
--- a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileService.java
+++ b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileService.java
@@ -54,6 +54,16 @@ public interface FileService {
      */
     String presignGetUrl(String url, Integer expirationSeconds);
 
+    /**
+     * 生成文件预签名地址（带 Content-Type），用于读取
+     *
+     * @param url 完整的文件访问地址
+     * @param expirationSeconds 访问有效期，单位秒
+     * @param contentType 响应的 Content-Type，为 null 时不设置
+     * @return 文件预签名地址
+     */
+    String presignGetUrl(String url, Integer expirationSeconds, String contentType);
+
     /**
      * 生成文件预签名地址（带 OSS 处理参数），用于读取
      * 用于阿里云 OSS 视频截帧等图片处理场景
diff --git a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java
index 9a4f90733d..c67e69b867 100644
--- a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java
+++ b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java
@@ -142,8 +142,13 @@ public class FileServiceImpl implements FileService {
 
     @Override
     public String presignGetUrl(String url, Integer expirationSeconds) {
+        return presignGetUrl(url, expirationSeconds, null);
+    }
+
+    @Override
+    public String presignGetUrl(String url, Integer expirationSeconds, String contentType) {
         FileClient fileClient = fileConfigService.getMasterFileClient();
-        return fileClient.presignGetUrl(url, expirationSeconds);
+        return fileClient.presignGetUrl(url, expirationSeconds, contentType);
     }
 
     @Override
diff --git a/yudao-module-tik/src/main/java/cn/iocoder/yudao/module/tik/file/service/TikUserFileServiceImpl.java b/yudao-module-tik/src/main/java/cn/iocoder/yudao/module/tik/file/service/TikUserFileServiceImpl.java
index f697fbb712..52c88f2251 100644
--- a/yudao-module-tik/src/main/java/cn/iocoder/yudao/module/tik/file/service/TikUserFileServiceImpl.java
+++ b/yudao-module-tik/src/main/java/cn/iocoder/yudao/module/tik/file/service/TikUserFileServiceImpl.java
@@ -339,7 +339,9 @@ public class TikUserFileServiceImpl implements TikUserFileService {
         }
 
         // 视频播放URL不缓存，每次都生成新的签名URL（使用 filePath 而非 fileUrl，避免域名匹配问题）
-        return fileApi.presignGetUrl(file.getFilePath(), PRESIGN_URL_EXPIRATION_SECONDS);
+        // 根据文件扩展名推断 Content-Type，确保浏览器 <video> 元素能正确渲染
+        String contentType = java.net.URLConnection.guessContentTypeFromName(file.getFilePath());
+        return fileApi.presignGetUrl(file.getFilePath(), PRESIGN_URL_EXPIRATION_SECONDS, contentType);
     }
 
     @Override
@@ -354,7 +356,8 @@ public class TikUserFileServiceImpl implements TikUserFileService {
         }
 
         // 音频播放URL不缓存，每次都生成新的签名URL（使用 filePath 而非 fileUrl，避免域名匹配问题）
-        return fileApi.presignGetUrl(file.getFilePath(), PRESIGN_URL_EXPIRATION_SECONDS);
+        String contentType = java.net.URLConnection.guessContentTypeFromName(file.getFilePath());
+        return fileApi.presignGetUrl(file.getFilePath(), PRESIGN_URL_EXPIRATION_SECONDS, contentType);
     }
 
     @Override