chore(website): bump astro to 6.3.5 and update styles

public/styles/global.css

@@ -181,15 +181,16 @@ a {
 }
 
 .nav-download {
+  margin-left: auto;
   color: var(--color-bg) !important;
   background: var(--color-accent);
-  padding: 0.5rem 1.5rem;
-  border: 2px solid var(--color-accent);
-  font-weight: 800 !important;
-  letter-spacing: 0.12em;
-  position: relative;
-  overflow: hidden;
-  transition: all 0.3s ease !important;
+  padding: 0.65rem 1.75rem;
+  font-family: var(--font-mono);
+  font-weight: 700 !important;
+  font-size: 0.85rem !important;
+  text-transform: uppercase !important;
+  letter-spacing: 0.08em !important;
+  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease !important;
 }
 
 .nav-download::after {
@@ -197,11 +198,10 @@ a {
 }
 
 .nav-download:hover {
+  background: #00ff88;
   color: var(--color-bg) !important;
-  background: var(--color-text);
-  border-color: var(--color-text);
-  box-shadow: 0 0 20px rgba(0, 221, 119, 0.4);
-  transform: scale(1.05);
+  transform: translateY(-1px);
+  box-shadow: 0 2px 12px rgba(0, 221, 119, 0.3);
 }
 
 /* ===== Hero Section ===== */
@@ -1392,6 +1392,12 @@ section {
     gap: var(--space-md);
     font-size: 0.8rem;
   }
+
+  .nav-download {
+    padding: 0.5rem 1rem;
+    font-size: 0.75rem !important;
+    letter-spacing: 0.06em !important;
+  }
   
   .hero {
     min-height: auto;