Fix animated hero background position and update Header menu

1. Fixed animated hero background - now inside the hero section with proper class structure
2. Changed อุปกรณ์ดับเพลิง to ตู้ดับเพลิง in Header main menu

src/pages/ตู้ดับเพลิง.astro

@@ -344,7 +344,7 @@ import StickyBottomCTA from '@/components/common/StickyBottomCTA.astro';
     </section>
 
     <!-- CTA Section -->
-    <section class="py-16 bg-gradient-to-br from-primary-700 to-primary-600 text-white text-center">
+    <section class="py-16 bg-gradient-to-br from-primary-700 to-primary-600 text-white text-center  relative overflow-hidden">>
       
     <!-- Animated Background -->
     <div class="absolute inset-0 overflow-hidden pointer-events-none">