Update CSS selectors to match renamed IDs

Replace outdated ID selectors with current IDs:
- p3-parameter-1 → customer_parameter
- pg2-filter-1, pg2-filter-3 → state_filter
- pg1-container-1_title_content → kpi-cards_title_content

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

assets/css/custom.css

@@ -9,16 +9,11 @@
   width: 300px;
 }
 
-#p3-filter-1 {
+#customer_parameter {
   display: none;
 }
 
-#p3-parameter-1 {
-  display: none;
-}
-
-#pg2-filter-1,
-#pg2-filter-3 {
+#state_filter {
   display: none;
 }
 
@@ -30,7 +25,7 @@
   font-size: 1.3rem;
 }
 
-#pg1-container-1_title_content {
+#kpi-cards_title_content {
   font-size: 14px;
 }