style(sidebar): refine action buttons

src/app/sidebar/components/voice-package-card.module.css

@@ -74,22 +74,20 @@
 }
 
 .buyBtn {
-  display: flex;
+  display: inline-flex;
   align-items: center;
   justify-content: center;
   padding: var(--spacing-md, 12px) var(--spacing-lg, 16px);
-  border-radius: var(--radius-full, 999px);
-  background: linear-gradient(
-    90deg,
-    var(--color-button-gradient-start, #ff67e0),
-    var(--color-button-gradient-end, #ff52a2)
-  );
+  border-radius: 22px;
+  background-image:
+    linear-gradient(91deg, #f67382 0%, #f66690 44%, #f657a0 100%),
+    linear-gradient(#f69757, #f69757);
+  background-blend-mode: normal, normal;
   color: var(--color-text-primary, #ffffff);
   font-size: var(--font-size-md, 14px);
   font-weight: 600;
   border: 0;
   cursor: pointer;
-  width: 100%;
   box-sizing: border-box;
 }