Bold Poster Product Detail

Act like a frontend developer with 15 years of experience. I want the exact same UI with 95-99% similarity.

Platform: This is a RESPONSIVE design — it should work on both mobile and desktop. Use mobile layout patterns (bottom nav, stacked content) for mobile, and desktop layout patterns (sidebar/nav bar, wider content areas) for web.

Design a product detail screen with a large image area, product title and price, a star rating row, size selector chips, a short description, and a sticky add-to-cart bar at the bottom.

Visual style — Bold Poster:
Oversized display type is the dominant visual element — headlines span the full width and overlap other elements confidently. Flat solid color blocks with zero shadow, sharp 0px or 4px radius, and a high-contrast two-color palette per screen. Graphic, confident, gig-poster energy.

Color palette — Blue White:
Background #FFFFFF. Type block blue #1D3AE8. Text #101018.

Typography — use these exact font families:
- Headings / display: "Arial Black", "Impact", sans-serif
- Body / labels: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif

Commit fully to this style — it should be unmistakable at a glance. Use realistic content, not placeholder text. Keep animations smooth (200ms ease-out).