fix: 修复单 SIM 卡逻辑

public/assets/admin.css

@@ -70,6 +70,10 @@
   box-sizing: border-box;
 }
 
+[hidden] {
+  display: none !important;
+}
+
 html {
   scroll-behavior: smooth;
   scroll-padding-top: 80px;
@@ -726,6 +730,10 @@ h3 {
   gap: var(--space-md);
 }
 
+.sim-slot-grid.is-single {
+  grid-template-columns: minmax(0, 1fr);
+}
+
 .sim-slot {
   display: grid;
   grid-template-columns: minmax(0, 1fr) auto;
@@ -737,6 +745,11 @@ h3 {
   padding: 12px 14px;
 }
 
+.sim-slot.is-single {
+  grid-template-columns: minmax(0, 1fr);
+  min-height: 76px;
+}
+
 .sim-slot.is-active {
   border-color: rgba(93, 184, 114, 0.55);
   box-shadow: inset 3px 0 0 var(--success);
@@ -1592,4 +1605,4 @@ body.modal-open {
   .field-row--wide {
     grid-column: auto;
   }
-}
+}