fix: restore hero section with simplified video positioning

- Removed CSS contain properties that were preventing video from extending into safe area
- Implemented Vue 3 Teleport to bypass DOM containment for iOS video extension
- Video now renders at body level to properly utilize safe area insets
- Kept Safari fallbacks for env() bug workaround

🤖 Generated with Claude Code

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

apps/website/assets/css/voyage-layout.css

@@ -443,7 +443,7 @@ html {
     overscroll-behavior-y: none;
     -webkit-overflow-scrolling: touch;
     max-width: 100vw !important;
-    contain: layout;
+    /* Removed contain: layout to allow video to extend into safe area */
     /* NO padding here - let container fill entire viewport */
     /* Safe areas will be applied to content only */
 }