feat: initial commit — Webflow to Next.js conversion

QuantumLab template converted to Next.js 16 + React 19 + TypeScript:
- 8 page routes (home, about, blog, contact, careers, team-members, coming-soon, 404)
- Dynamic routes for blog posts, career positions, and team members
- GSAP animations (marquee, counters, button hovers)
- IntersectionObserver-based scroll reveal (blur-to-clear transitions)
- Dark mode with next-themes
- React Hook Form + Zod contact form
- Framer Motion page transitions
- Lottie animations via lottie-web

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

components/blog/PostsGridSection.tsx

@@ -0,0 +1,46 @@
+"use client"
+
+import { useState } from "react"
+import { BLOG_POSTS, BLOG_CATEGORIES } from "@/lib/blog-data"
+import BlogCard from "@/components/BlogCard"
+
+export default function PostsGridSection() {
+  const [activeCategory, setActiveCategory] = useState("All")
+
+  const filtered = activeCategory === "All"
+    ? BLOG_POSTS
+    : BLOG_POSTS.filter((p) => p.category === activeCategory)
+
+  return (
+    <section className="section">
+      <div className="w-layout-blockcontainer container-default w-container">
+        <div data-w-id="41a231e8-d013-bd0a-0639-c179719a51f6" style={{ opacity: "0", filter: "blur(8px)" }} className="title-left-content-right align-center">
+          <h2>All articles</h2>
+          <div className="category-list-wrapper">
+            <div role="list" className="category-list">
+              {BLOG_CATEGORIES.map((cat) => (
+                <button
+                  key={cat}
+                  className={`category-link${activeCategory === cat ? " w--current" : ""}`}
+                  onClick={() => setActiveCategory(cat)}
+                  type="button"
+                >
+                  {cat}
+                </button>
+              ))}
+            </div>
+          </div>
+        </div>
+        <div className="mg-top-regular">
+          <div data-w-id="e99a5296-8389-ce52-d99c-66f9d94e1815" style={{ opacity: "0", filter: "blur(8px)" }} className="w-dyn-list">
+            <div role="list" className="blog-v1-grid w-dyn-items">
+              {filtered.map((post) => (
+                <BlogCard key={post.slug} post={post} variant="grid" />
+              ))}
+            </div>
+          </div>
+        </div>
+      </div>
+    </section>
+  )
+}