Create a React artifact that reproduces this brand's design language.
Page intent: landing.
Material language: flat.
Voice: Tone: friendly · Headings: Title Case · CTA verbs: [object Object].
Colors to use: #000000, #3139fb, #fffcec, #ffffff, #fffadd, #2702c2, #696969.
Fonts: [object Object], [object Object], [object Object], [object Object].
Radius vocabulary: 4, 8, 22.
Sections:
- testimonial — heading: "Arc is the Chrome  replacement I've been  waiting for."
- sidebar
- testimonial
- testimonial
- footer
- sidebar
Use Tailwind via CDN, lucide-react for icons, and keep the material language consistent across sections. Do not add extra decorative elements outside this vocabulary.