Memphis Pattern 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 — Memphis Pattern:
Squiggles, confetti dots and zigzag lines scattered as decorative background motifs behind flat-color geometric shapes (triangles, half-circles, squiggly underlines). Thick black outlines on every card. Bold geometric sans headings. Asymmetric, loud, 80s-postmodern clash of color and shape.

Color palette — Mono Memphis:
Background #F2F2F2. Shapes black #111111 and single accent orange #FF5A1F.

Typography — use these exact font families:
- Headings / display: "Arial Black", "Helvetica Neue", 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).