- New CSS: complete design system with CSS variables, modern color palette
- Homepage: full-viewport hero with centered search, logo, tagline
- Result cards: rounded, shadowed, with favicons via Google Favicon API
- Layout: sidebar + results grid, responsive
- Typography: proper font stack, variable weights
- Settings panel: polished popover with animations
- Autocomplete: modern dropdown with keyboard nav
- Dark mode: full color palette via data-theme attribute
- Favicon: clean search icon SVG
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