Refine voucher compare UI/layout and fix suggestion behavior

templates/annual_summary.html

@@ -41,10 +41,10 @@
         font-size: 13px;
         font-weight: 800;
         letter-spacing: -0.01em;
-        background: rgba(255,255,255,0.92);
-        border: 1px solid var(--line);
-        border-radius: 12px;
-        padding: 8px 12px;
+        background: transparent;
+        border: 0;
+        border-radius: 0;
+        padding: 0;
     }
 
     .legend-swatch {