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/layout/Header.tsx

@@ -72,7 +72,7 @@ export function Header({ navLinks }: HeaderProps) {
         className={`fixed top-0 left-0 right-0 z-50 flex justify-center transition-all duration-700 ease-[cubic-bezier(0.16,1,0.3,1)] ${
           isStandard 
             ? 'bg-[#050B14]/95 backdrop-blur-xl border-b border-white/10' 
-            : (isSolidMode ? 'pt-4 px-4' : 'pt-0 px-0')
+            : (isSolidMode ? 'pt-4 px-4 sm:px-6' : 'pt-0 px-0')
         }`}
       >
         <div
@@ -80,7 +80,7 @@ export function Header({ navLinks }: HeaderProps) {
             isStandard
               ? 'py-4 px-6 md:px-8'
               : isSolidMode
-                ? 'rounded-full bg-white/50 backdrop-blur-xl shadow-[0_8px_32px_rgba(0,0,0,0.08)] border border-white/40 py-2.5 px-6 md:px-8'
+                ? 'rounded-full bg-white/50 backdrop-blur-xl shadow-[0_8px_32px_rgba(0,0,0,0.08)] border border-white/40 py-2.5 px-8 md:px-10'
                 : 'rounded-none bg-transparent py-6 px-4 md:px-8 border border-transparent'
           }`}
         >