修复了一些一些已知问题

assets/css/frontend/header-userbox.css

@@ -24,6 +24,20 @@
   flex: 0 0 auto;
 }
 
+.navbar-top .aksrt-navbar-account > li {
+  position: relative;
+  padding: 0;
+  overflow: visible;
+}
+
+.navbar-top .aksrt-navbar-account > li > .sub-menu {
+  top: calc(100% + 5px);
+  right: 0;
+  left: auto;
+  z-index: 1002;
+  margin: 0;
+}
+
 .navbar-top .aksrt-navbar-account {
   gap: 4px;
   min-height: 50px;
@@ -93,42 +107,28 @@
   margin: 0;
 }
 
-/* The full search surface must sit above a fixed header (z-index: 999). */
+/* Keep the drop-down search panel above a fixed header (z-index: 999). */
 .navbar-search {
   z-index: 1001;
-  height: 100%;
-  overflow: hidden;
 }
 
 .navbar-search > .container {
   position: relative;
-  height: 100%;
-  max-height: 100%;
-  padding-bottom: 76px;
+  max-height: calc(100vh - 40px);
   overflow-y: auto;
 }
 
 .navbar-search .search-close-box {
-  position: fixed;
-  right: max(30px, calc((100vw - var(--container, 1200px)) / 2 + 30px));
-  bottom: 24px;
-  z-index: 2;
-  width: auto;
-  max-width: none;
-  margin: 0;
+  display: flex;
+  justify-content: flex-end;
+  max-width: 660px;
+  margin: 16px auto 0;
 }
 
 .navbar-search .search-close-box > .but {
   float: none;
 }
 
-@media (max-width: 767.98px) {
-  .navbar-search .search-close-box {
-    right: 15px;
-    bottom: calc(15px + env(safe-area-inset-bottom, 0px));
-  }
-}
-
 .aksrt-header-userbox {
   width: 260px;
   color: var(--color-ink-2);