refactor: update homepage layout and enhance feature card styling with improved shadows

src/pages/home/CallToAction.tsx

@@ -0,0 +1,40 @@
+import { CircleBackground } from '../../components/CircleBackground'
+import { Container } from '../../components/Container'
+import { Button } from '../../components/Button'
+
+export function CallToAction() {
+  return (
+    <section
+      id="get-started"
+      className="relative overflow-hidden bg-gray-900 py-32"
+    >
+      <div className="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2">
+        <CircleBackground color="#06b6d4" className="animate-spin-slower" />
+      </div>
+      <Container className="relative">
+        <div className="mx-auto max-w-2xl text-center">
+          <h2 className="text-3xl lg:text-4xl font-medium tracking-tight text-white sm:text-4xl">
+            Build the Future, Today
+          </h2>
+          <p className="mt-6 text-lg text-gray-300">
+            Ready to reclaim your digital freedom? Start building on a cloud that’s autonomous, efficient, and truly yours. Explore the documentation or join our community to get started.
+          </p>
+          <div className="mt-10 flex flex-wrap justify-center gap-x-6 gap-y-4">
+                        <Button to="/cloud" variant="solid" color="white">
+              Start Building
+            </Button>
+            <Button
+              to="https://threefold.info/mycelium_network/docs/"
+              as="a"
+              target="_blank"
+              variant="outline"
+              color="white"
+            >
+              Read Docs
+            </Button>
+          </div>
+        </div>
+      </Container>
+    </section>
+  )
+}