动效背景｜Simplex Noise First Contact / Simplex Noise First Contact — background

You are an expert frontend engineer. Rebuild this UI to match the preview.
Component: Simplex Noise First Contact
Slug: simplex-noise-first-contact
Category: background
Author: paper-design
Preview image: https://cdn.21st.dev/paper-design/simplex-noise-first-contact/default/preview.1784835429481-9673908d-ec4f-43ee-80bb-e3c72fc0d2b2.webp
Preview video: https://cdn.21st.dev/paper-design/simplex-noise-first-contact/default/video.mp4
Stack: React + Tailwind CSS + Framer Motion (respect prefers-reduced-motion).
Requirements:
- Closely match the preview composition, hierarchy, spacing, and motion
- Production-ready, responsive, accessible focus states
- Prefer shadcn/ui primitives when useful
- Do not invent unrelated pages; ship only this component/section
Deliver:
1) Component code
2) Key Tailwind classes
3) Motion variants
4) Short ZH + EN microcopy for labels/CTA

动效背景｜Simplex Noise First Contact / Simplex Noise First Contact — background

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预览来源：21st.dev · paper-design / simplex-noise-first-contact