Neubrutalism 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 — Neubrutalism:
Every card and button carries a solid 2px black border and a hard 4px offset black drop shadow with zero blur. Bold heavy sans-serif headings. Corner radius 12px. Flat color blocks, no gradients. High contrast, chunky, confident and playful.

Color palette — Yellow Teal:
Background #FDF6E3. Accent blocks #FFD23F yellow and #4ECDC4 teal. All borders and text pure black #000000.

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