fix: dark scrollbar for autocomplete dropdown

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

Co-Authored-By: Claude Opus 4.5 <[e-mail]>

src/templates/landing.html

···
             margin-top: 0.25rem;
             box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
             display: none;
+            scrollbar-width: thin;
+            scrollbar-color: rgba(255, 255, 255, 0.2) rgba(10, 10, 15, 0.5);
+        }
+
+        .autocomplete-results::-webkit-scrollbar {
+            width: 8px;
+        }
+
+        .autocomplete-results::-webkit-scrollbar-track {
+            background: rgba(10, 10, 15, 0.5);
+            border-radius: 4px;
+        }
+
+        .autocomplete-results::-webkit-scrollbar-thumb {
+            background: rgba(255, 255, 255, 0.2);
+            border-radius: 4px;
+        }
+
+        .autocomplete-results::-webkit-scrollbar-thumb:hover {
+            background: rgba(255, 255, 255, 0.3);
         }
 
         .autocomplete-results.show {