diff --git a/src/views/Center/components/CalendarPanel.tsx b/src/views/Center/components/CalendarPanel.tsx
index 6b38bafa..5a62531d 100644
--- a/src/views/Center/components/CalendarPanel.tsx
+++ b/src/views/Center/components/CalendarPanel.tsx
@@ -113,7 +113,21 @@ export const CalendarPanel: React.FC = () => {
       <Box
         height={{ base: '380px', md: '560px' }}
         sx={{
-          // FullCalendar 按钮样式覆盖（黑金主题）
+          // FullCalendar CSS Variables 覆盖（黑金主题）
+          // FullCalendar v6 使用 CSS-in-JS，必须通过 CSS Variables 覆盖
+          '--fc-button-text-color': '#0A0A14',
+          '--fc-button-bg-color': '#D4AF37',
+          '--fc-button-border-color': '#D4AF37',
+          '--fc-button-hover-bg-color': '#B8960C',
+          '--fc-button-hover-border-color': '#B8960C',
+          '--fc-button-active-bg-color': '#B8960C',
+          '--fc-button-active-border-color': '#B8960C',
+          '--fc-today-bg-color': 'rgba(212, 175, 55, 0.1)',
+          '--fc-border-color': 'rgba(212, 175, 55, 0.2)',
+          '--fc-page-bg-color': 'transparent',
+          '--fc-neutral-bg-color': 'rgba(212, 175, 55, 0.05)',
+
+          // 直接样式覆盖作为后备（提高特异性）
           '.fc .fc-button': {
             backgroundColor: '#D4AF37 !important',
             borderColor: '#D4AF37 !important',
diff --git a/src/views/Center/components/InvestmentCalendar.less b/src/views/Center/components/InvestmentCalendar.less
index e5bf9c88..1c32dbd8 100644
--- a/src/views/Center/components/InvestmentCalendar.less
+++ b/src/views/Center/components/InvestmentCalendar.less
@@ -26,8 +26,31 @@
 // 今天高亮背景
 @today-bg: rgba(212, 175, 55, 0.1);
 
-// ==================== FullCalendar 样式 ====================
+// ==================== FullCalendar CSS Variables 覆盖 ====================
+// FullCalendar v6 使用 CSS-in-JS，必须通过 CSS Variables 覆盖默认样式
 .fc {
+  // 按钮颜色
+  --fc-button-text-color: @bg-deep;
+  --fc-button-bg-color: @gold-400;
+  --fc-button-border-color: @gold-400;
+  --fc-button-hover-bg-color: @gold-500;
+  --fc-button-hover-border-color: @gold-500;
+  --fc-button-active-bg-color: @gold-500;
+  --fc-button-active-border-color: @gold-500;
+
+  // 今天高亮
+  --fc-today-bg-color: @today-bg;
+
+  // 边框和背景
+  --fc-border-color: @line-default;
+  --fc-page-bg-color: transparent;
+  --fc-neutral-bg-color: rgba(212, 175, 55, 0.05);
+
+  // 事件颜色（可选）
+  --fc-event-bg-color: @gold-400;
+  --fc-event-border-color: @gold-400;
+  --fc-event-text-color: @bg-deep;
+
   font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
 }