fix: refine polling and settings layout

frontend/src/views/SettingsView.vue

@@ -1094,19 +1094,27 @@ onMounted(loadSettings);
 
 .settings-grid {
   display: grid;
-  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.92fr);
+  grid-template-columns: minmax(0, 1fr);
   align-items: start;
-  gap: 20px;
+  gap: 18px;
 }
 
 .settings-grid__full {
-  grid-column: 1 / -1;
+  grid-column: auto;
 }
 
 .settings-card :deep(.el-card__body) {
   padding-top: 20px;
 }
 
+.settings-card :deep(.el-form) {
+  max-width: 1120px;
+}
+
+.settings-card :deep(.el-input-number) {
+  width: 100%;
+}
+
 .helper-panel {
   margin-top: 14px;
   padding: 14px 16px;
@@ -1359,12 +1367,6 @@ onMounted(loadSettings);
   line-height: 1.7;
 }
 
-@media (max-width: 1100px) {
-  .settings-grid {
-    grid-template-columns: 1fr;
-  }
-}
-
 @media (max-width: 960px) {
   .event-script-grid {
     grid-template-columns: 1fr;
@@ -1391,6 +1393,10 @@ onMounted(loadSettings);
     max-width: 100%;
   }
 
+  .settings-card :deep(.el-form) {
+    max-width: none;
+  }
+
   .event-script-example__row {
     grid-template-columns: 1fr;
     gap: 4px;