fix: 添加导航链接样式以禁用无效链接

public/themes/dist_static/static/css/common.css

@@ -1525,6 +1525,11 @@ body {
   color: var(--color-primary);
 }.nav-mega__links a:hover::after {
   opacity: 1;
+}.nav-mega__links a[href=""],
+.nav-mega__links a:not([href]) {
+  opacity: 0.5;
+  cursor: not-allowed;
+  pointer-events: none;
 }.nav-mega__empty {
   margin: 0;
   color: var(--color-text-muted);