diff --git a/app/assets/weChatGroup.jpg b/app/assets/weChatGroup.jpg
index e151b90..44cdfc2 100644
Binary files a/app/assets/weChatGroup.jpg and b/app/assets/weChatGroup.jpg differ
diff --git a/app/components/MarketIndexAccordion.jsx b/app/components/MarketIndexAccordion.jsx
index 26ddfe5..e6f5359 100644
--- a/app/components/MarketIndexAccordion.jsx
+++ b/app/components/MarketIndexAccordion.jsx
@@ -344,7 +344,7 @@ export default function MarketIndexAccordion({
           display: none;
         }
         :global([data-theme='dark'] .market-index-accordion-root) {
-          background-color: rgba(15, 23, 42, 0.9);
+          background-color: rgba(15, 23, 42);
         }
         .market-index-ticker {
           overflow: hidden;
diff --git a/doc/weChatGroupDevelop.jpg b/doc/weChatGroupDevelop.jpg
index 8d5df2d..3deb41f 100644
Binary files a/doc/weChatGroupDevelop.jpg and b/doc/weChatGroupDevelop.jpg differ