style(mobile): optimize mobile layout and component spacing

- Hide CorporateBackground on mobile to prevent content overlap
- Increase Header padding on mobile for better logo spacing
- Reduce top spacing in HeroSection on mobile
- Change SubCompanyTiles to horizontally scrollable row on mobile
- Add bottom padding to Footer to clear MobileBottomNav
- Reduce Footer Bento card padding for compact mobile view

components/blocks/SubCompanyTiles.tsx

@@ -79,7 +79,7 @@ export function SubCompanyTiles(props: SubCompanyTilesProps) {
         )}
         
         <motion.div 
-          className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6"
+          className="flex overflow-x-auto snap-x snap-mandatory pb-6 md:pb-0 md:grid md:grid-cols-2 lg:grid-cols-4 gap-4 md:gap-6 hide-scrollbar -mx-4 px-4 md:mx-0 md:px-0"
           variants={containerVariants}
           initial="hidden"
           whileInView="visible"
@@ -236,7 +236,7 @@ export function SubCompanyTiles(props: SubCompanyTilesProps) {
               <motion.div 
                 key={index}
                 variants={itemVariants}
-                className="h-full"
+                className="h-full flex-shrink-0 snap-center w-[85%] sm:w-[70%] md:w-full"
               >
                 {hasUrl ? (
                   isExternal ? (