Draggable Sticker Stack Hero

Build a "Draggable Sticker Stack Hero" React component.

CONCEPT: A studio landing hero with a bold two-line headline and four sticker-like badges that visitors can drag, throw and stack. The stickers make the page feel touched by hand.

LAYOUT & CONTENT:
- Headline: 'We design / with our hands.' in a heavy grotesk, centered.
- Four stickers: a cobalt circle 'Since 2014', a terracotta rounded rectangle 'Open for Q1', a cream rectangle with charcoal border 'Two-week sprints', a small charcoal pill 'Tel Aviv / Berlin'.
- Each sticker has a slight initial rotation (-8° to 10°) and a hard 3px offset charcoal shadow.

INTERACTIONS & MOTION:
- drag with dragConstraints set to the hero container ref, dragElastic 0.2, dragTransition bounceStiffness 400 bounceDamping 18.
- whileDrag: scale 1.08, rotate 0, cursor grabbing; the dragged sticker comes to the top (raise zIndex on drag start).
- whileHover: scale 1.04 with spring.

DESIGN SYSTEM (non-negotiable):
- Palette: paper background #FAF9F6, deep charcoal #121212 for text and 1px borders, ONE warm accent: cobalt #1D4ED8 or terracotta #D9534F. Secondary surface #F2EFE8.
- Typography: Swiss / editorial. A tight grotesk for UI (Instrument Sans, Inter Tight or similar) with negative tracking on display sizes; an italic serif (Instrument Serif) used sparingly for one emphasized word.
- NO dark-mode neon, NO glow, NO glassmorphism, NO backdrop blur, NO purple-to-blue gradients, NO emoji icons. Solid fills, hairline rules, honest shadows (hard offset or none).
- Motion: Framer Motion with spring physics (type: "spring", stiffness 300-500, damping 20-35). Animate transform and opacity only. Respect prefers-reduced-motion via useReducedMotion().
- Icons: lucide-react, 1.5px stroke.
- Accessibility: real <button>/<a>/<label> elements, visible focus ring (2px cobalt, 3px offset), keyboard operable, aria attributes where state changes.

OUTPUT: one self-contained React component file (Tailwind CSS v4 utility classes, framer-motion, lucide-react), no external images, default export, ready to paste into a Next.js App Router page with "use client".