fix: 修改历史记录标题颜色大小等，统一效果

frontend/src/views/History.vue

@@ -657,15 +657,31 @@ const getDateStatusColor = (users: Record<string, HistoryData>) => {
   display: flex;
   justify-content: space-between;
   align-items: center;
-  margin-bottom: 24px;
+  margin-bottom: 32px;
+  padding: 0 8px;
+}
+
+.header-title {
+  display: flex;
+  align-items: center;
+  gap: 16px;
+}
+
+.title-icon {
+  font-size: 32px;
+  color: var(--ant-color-primary);
 }
 
 .header-title h1 {
   margin: 0;
-  font-size: 24px;
+  font-size: 32px;
-  font-weight: 600;
+  font-weight: 700;
+  color: var(--ant-color-text);
+  background: linear-gradient(135deg, var(--ant-color-primary), var(--ant-color-primary-hover));
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+  background-clip: text;
 }
-
 .search-section {
   margin-bottom: 24px;
 }