feat: refactor Product page to match prototype design

Redesigned ProductCard and Product page based on original prototype:

ProductCard Component:
- Added gradient background matching prototype style
- Copied all SVG icons from prototype (US flags, HK flag, etc.)
- Implemented proper icon display with white background container
- Added category color variants (blue, green, purple)
- Risk level indicators with accurate colors
- Styled progress bar matching prototype
- Proper spacing and typography from CSS

Visual Elements:
- Radial gradient backgrounds on cards
- Glass-morphism effect with transparency
- Shadow and border effects from prototype
- Icon container with white background and shadow ring
- Category badges with colored backgrounds

Assets Added:
- frame-9230.svg, frame-9231.svg (US flag icons)
- hk0.svg (HK flag icon)
- chart-square1.svg
- All component SVG files from prototype
- View toggle icons

Styling:
- Followed prototype's style.css specifications
- Maintained exact color values and gradients
- Proper border radius and spacing
- Typography matching prototype

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

public/icon8.svg

@@ -1,4 +0,0 @@
-<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M5.83333 5.8335H14.1667V14.1668" stroke="white" stroke-width="1.66667" stroke-linecap="round" stroke-linejoin="round"/>
-<path d="M5.83333 14.1668L14.1667 5.8335" stroke="white" stroke-width="1.66667" stroke-linecap="round" stroke-linejoin="round"/>
-</svg>