Update custom.css

custom.css

@@ -17,6 +17,13 @@
     src: url('../assets/fonts/DingTalk-JinBuTi.woff2') format('woff2');
     font-display: swap;
 }
+@font-face {
+  font-family: 'JetBrains Mono';
+  src: url('../assets/fonts/JetBrainsMono-Bold.woff2') format('woff2');
+  font-display: swap;
+  font-weight: bold;
+  font-style: normal;
+}
 
 html {
     scroll-behavior: smooth;
@@ -441,4 +448,9 @@ span.ͼw {
 /* 隐藏原始的折叠按钮 */
 button.flex.gap-1.items-center:not(.run-code-button) {
     display: none;
+}
+/* 代码区域使用字体 */
+code, pre, .code-block {
+  font-family: 'JetBrains Mono', monospace;
+  font-weight: bold;
 }