diff --git a/src/app/globals.css b/src/app/globals.css
index 9045ea7..25fcfc4 100644
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -24,3 +24,12 @@
   /* Brand shadow used on cards, buttons */
   --shadow-brand: 0px 4px 60px rgba(242, 139, 74, 0.25);
 }
+
+@keyframes progress-fill {
+  from {
+    width: 0%;
+  }
+  to {
+    width: 100%;
+  }
+}
diff --git a/src/components/layout/HeaderClient.tsx b/src/components/layout/HeaderClient.tsx
index e823a16..97f113a 100644
--- a/src/components/layout/HeaderClient.tsx
+++ b/src/components/layout/HeaderClient.tsx
@@ -39,8 +39,10 @@ export function HeaderClient({ navLinks, ctaLabel, ctaHref, logo }: HeaderClient
       <div
         className="relative mx-auto max-w-[1204px] rounded-b-[20px]"
         style={{
-          backgroundColor: '#396817',
-          boxShadow: '0 4px 20px rgba(0,0,0,0.18)',
+          backgroundColor: 'rgba(34, 62, 13, 0.55)',
+          backdropFilter: 'blur(18px) saturate(180%) brightness(1.1)',
+          WebkitBackdropFilter: 'blur(18px) saturate(180%) brightness(1.1)',
+          boxShadow: 'inset 0 1px 0 rgba(255,255,255,0.15), 0 2px 12px rgba(0,0,0,0.20)',
         }}
       >
         <div className="relative flex h-[60px] items-center justify-between px-[20px] lg:h-[120px] lg:px-[30px]">
diff --git a/src/components/sections/WhyParents.tsx b/src/components/sections/WhyParents.tsx
index ad52235..9b6dd31 100644
--- a/src/components/sections/WhyParents.tsx
+++ b/src/components/sections/WhyParents.tsx
@@ -45,27 +45,39 @@ interface WhyParentsProps {
   title?: string
 }
 
+const INTERVAL = 4000
+
 export function WhyParents({ items, sideGallery: _sideGallery, title }: WhyParentsProps) {
   const [openIndex, setOpenIndex] = useState<number>(0)
+  const [progressKey, setProgressKey] = useState<number>(0)
   const autoTimer = useRef<ReturnType<typeof setInterval> | null>(null)
+  const lenRef = useRef(0)
 
   const activeItems = items && items.length > 0 ? items : STATIC_ITEMS
 
   useEffect(() => {
-    autoTimer.current = setInterval(() => {
-      setOpenIndex((prev) => (prev + 1) % activeItems.length)
-    }, 4000)
+    lenRef.current = activeItems.length
+  })
+
+  useEffect(() => {
+    const tick = () => {
+      setOpenIndex((prev) => (prev + 1) % lenRef.current)
+      setProgressKey((k) => k + 1)
+    }
+    autoTimer.current = setInterval(tick, INTERVAL)
     return () => {
       if (autoTimer.current) clearInterval(autoTimer.current)
     }
-  }, [activeItems.length])
+  }, [])
 
   function handleItemClick(i: number) {
     setOpenIndex(i)
+    setProgressKey((k) => k + 1)
     if (autoTimer.current) clearInterval(autoTimer.current)
     autoTimer.current = setInterval(() => {
-      setOpenIndex((prev) => (prev + 1) % activeItems.length)
-    }, 4000)
+      setOpenIndex((prev) => (prev + 1) % lenRef.current)
+      setProgressKey((k) => k + 1)
+    }, INTERVAL)
   }
 
   return (
@@ -89,7 +101,7 @@ export function WhyParents({ items, sideGallery: _sideGallery, title }: WhyParen
                   <button
                     key={i}
                     onClick={() => handleItemClick(i)}
-                    className="flex w-full flex-col gap-2.5 rounded-[10px] bg-[#f1fbeb] px-[50px] py-[20px] text-left shadow-[0_4px_60px_0_rgba(242,139,74,0.25)] transition-all duration-200 lg:w-[628px]"
+                    className="relative flex w-full flex-col gap-2.5 overflow-hidden rounded-[10px] bg-[#f1fbeb] px-[50px] py-[20px] text-left shadow-[0_4px_60px_0_rgba(242,139,74,0.25)] transition-all duration-200 lg:w-[628px]"
                     aria-expanded={isOpen}
                   >
                     <div className="flex items-center gap-5">
@@ -128,6 +140,18 @@ export function WhyParents({ items, sideGallery: _sideGallery, title }: WhyParen
                         </p>
                       </div>
                     </div>
+                    {/* Progress bar — CSS animation, keyed to reset on each advance */}
+                    {isOpen && (
+                      <div className="absolute bottom-0 left-0 h-[3px] w-full">
+                        <div
+                          key={progressKey}
+                          className="h-full bg-[#f28b4a]"
+                          style={{
+                            animation: `progress-fill ${INTERVAL}ms linear forwards`,
+                          }}
+                        />
+                      </div>
+                    )}
                   </button>
                 )
               })}