refactor: remove cta band section and add install section styles

Deleted the cta band section from the landing page to streamline content. Introduced new styles for an install section, enhancing the visual layout with a radial gradient background for improved user engagement.

Author: adarshaacharya

apps/landing/index.html

@@ -248,16 +248,6 @@ <h3>Linux</h3>
   </div>
 </section>
 
-<section class="cta-band">
-  <div class="wrap cta-band-inner">
-    <div>
-      <h2>Download Sajilo. It's free.</h2>
-      <p class="cta-band-copy">Open source under MIT. No account, no ads, no tracking.</p>
-    </div>
-    <a class="btn-primary btn-primary--large" href="#download">Get the app</a>
-  </div>
-</section>
-
 <footer class="site-footer">
   <div class="wrap site-footer-inner">
     <div class="footer-brand">

apps/landing/style.css

@@ -1052,6 +1052,29 @@ section {
   stroke-width: 1.6;
 }
 
+/* ---------- install section ---------- */
+
+.install-section {
+  position: relative;
+  isolation: isolate;
+  background: transparent;
+}
+
+.install-section::before {
+  content: "";
+  position: absolute;
+  z-index: -1;
+  top: 0;
+  bottom: 0;
+  left: 50%;
+  width: 100vw;
+  transform: translateX(-50%);
+  pointer-events: none;
+  background:
+    radial-gradient(ellipse 100% 90% at 50% 120%, color-mix(in srgb, var(--gold) 16%, transparent), transparent 62%),
+    var(--bg-1);
+}
+
 /* ---------- cta band ---------- */
 
 .cta-band {