feat(coins-rules): update coin rules text to English for better clarity

style(sidebar): enhance hero section with new padding, border, and background

src/app/sidebar/components/sidebar-screen.module.css

@@ -53,7 +53,14 @@
 }
 
 .hero {
-  padding: 12px 2px 6px;
+  padding: 18px;
+  border: 1px solid rgba(246, 87, 160, 0.12);
+  border-radius: 26px;
+  background:
+    linear-gradient(135deg, rgba(255, 255, 255, 0.76) 0%, rgba(255, 239, 246, 0.84) 100%),
+    #ffffff;
+  box-shadow: 0 14px 34px rgba(55, 36, 44, 0.07);
+  backdrop-filter: blur(16px);
 }
 
 .kicker {

src/app/sidebar/components/sidebar-wallet-card.tsx

@@ -38,7 +38,7 @@ export function SidebarWalletCard({
           className={styles.rulesButton}
           onClick={onRulesClick}
         >
-          Coins 消耗规则
+          Coin Usage Rules
         </button>
       </div>