Make landing page tagline bold

index.html

@@ -116,6 +116,7 @@
   .lead {
     margin: 0;
     font-size: clamp(15px, 1.6vw, 18px);
+    font-weight: 700;
     color: var(--fg-dim);
     max-width: 62ch;
     line-height: 1.65;