- Add desktop.webp (2732x1535) for desktop devices and mobile.webp (556x1535) for mobile
- Create adaptive-background.css with media queries (max-width: 736px for mobile)
- Update config.toml to use desktop.webp as default background
- Modify htmlhead.html to include adaptive-background.css
- Update preload-images.html for responsive image preloading
- Optimize background loading based on device screen width
Both images include overlay.png and gradient overlay for consistent design.
Mobile version (124 KB) is 5.8x lighter than desktop version (716 KB).
Kirik