diff --git a/src/components/AnnouncementDetail.css b/src/components/AnnouncementDetail.css
index 5ca87c1..b6c600b 100644
--- a/src/components/AnnouncementDetail.css
+++ b/src/components/AnnouncementDetail.css
@@ -1,64 +1,93 @@
 .announcement-container {
-    max-width: 800px;
-    margin: 0 auto;
-    padding: 20px;
-  }
-  
-  .back-button {
-    background: none;
-    border: none;
-    color: #1890ff;
-    font-size: 16px;
-    cursor: pointer;
-    margin-bottom: 20px;
+  max-width: 800px;
+  margin: 40px auto;
+  padding: 0 20px;
+}
+
+.back-button {
+  padding: 8px 16px;
+  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
+  color: white;
+  border: none;
+  border-radius: 6px;
+  font-weight: 600;
+  cursor: pointer;
+  margin-bottom: 20px;
+  transition: all 0.2s;
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+}
+
+.back-button:hover {
+  transform: translateY(-1px);
+  box-shadow: 0 2px 8px rgba(30, 60, 114, 0.3);
+}
+
+.announcement-detail {
+  background: white;
+  padding: 30px;
+  border-radius: 8px;
+  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
+}
+
+.announcement-header {
+  border-bottom: 1px solid #eee;
+  padding-bottom: 20px;
+  margin-bottom: 25px;
+}
+
+.announcement-header h1 {
+  margin: 0 0 15px 0;
+  font-size: 28px;
+  color: #1e3c72;
+  font-weight: 700;
+}
+
+.announcement-meta {
+  display: flex;
+  gap: 15px;
+  color: #666;
+  font-size: 14px;
+  align-items: center;
+}
+
+.announcement-content {
+  line-height: 1.8;
+  font-size: 16px;
+  color: #333;
+}
+
+.announcement-content p {
+  margin: 0 0 20px 0;
+}
+
+.error-message {
+  text-align: center;
+  padding: 50px;
+  color: #ff4d4f;
+  font-size: 16px;
+  background-color: #fff2f0;
+  border-radius: 8px;
+  border: 1px solid #ffccc7;
+}
+
+/* 响应式调整 */
+@media (max-width: 768px) {
+  .announcement-container {
+    padding: 0 15px;
+    margin: 20px auto;
   }
   
   .announcement-detail {
-    background: white;
-    padding: 25px;
-    border-radius: 8px;
-    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
-  }
-  
-  .announcement-header {
-    border-bottom: 1px solid #f0f0f0;
-    padding-bottom: 15px;
-    margin-bottom: 20px;
+    padding: 20px;
   }
   
   .announcement-header h1 {
-    margin: 0 0 10px 0;
-    font-size: 24px;
-  }
-  
-  .announcement-meta {
-    display: flex;
-    gap: 15px;
-    color: #666;
-    font-size: 14px;
-    align-items: center;
-  }
-  
-  .category-badge {
-    background: #e6f7ff;
-    color: #1890ff;
-    padding: 2px 8px;
-    border-radius: 4px;
-    font-size: 12px;
+    font-size: 22px;
   }
   
   .announcement-content {
-    line-height: 1.8;
     font-size: 15px;
   }
-  
-  .announcement-content p {
-    margin: 0 0 16px 0;
-  }
-  
-  .error-message {
-    text-align: center;
-    padding: 50px;
-    color: #ff4d4f;
-    font-size: 16px;
-  }
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+}
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