Center search box and add help cursor to sidenotes

- Center the search/lookup section on homepage with subtle border
- Add cursor: help to sidenote numbers site-wide via base template

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

kjvstudy_org/templates/base.html

@@ -87,6 +87,7 @@
 
         label.sidenote-number {
             max-height: none !important;
+            cursor: help;
         }
 
         /* Verse tooltip styles */

kjvstudy_org/templates/index.html

@@ -51,17 +51,18 @@
 
 /* Verse Lookup */
 .verse-lookup {
-    max-width: 55%;
-    margin: 2rem 0;
-    padding: 1.5rem 0 1.5rem 1.5rem;
-    border-left: 3px solid var(--border-color-darker);
+    max-width: 32rem;
+    margin: 2rem auto;
+    padding: 1.5rem;
+    border: 1px solid var(--border-color);
 }
 
 .verse-lookup h2 {
     margin-top: 0;
-    font-size: 1.15rem;
+    font-size: 1.1rem;
     font-style: italic;
     font-weight: 600;
+    text-align: center;
 }
 
 .lookup-form {
@@ -100,10 +101,11 @@
 }
 
 .lookup-help {
-    font-size: 0.9rem;
+    font-size: 0.85rem;
     color: var(--text-tertiary);
     margin-top: 0.5rem;
     font-style: italic;
+    text-align: center;
 }
 
 /* Navigation Links */
@@ -210,7 +212,7 @@
 
     .verse-lookup {
         max-width: 100%;
-        padding: 1.25rem 0 1.25rem 1.25rem;
+        padding: 1.25rem;
     }
 
     .lookup-form {