fix(visual): 1:1 banner/hero/modal + strip non-zibll card chrome

Align banner s-desc caption/scale-height, hero search pill and -40px cards, modal colorful header/spring scale; remove white/pink card borders and hover lifts across mainline surfaces.

assets/css/routes/user-home.css

@@ -13,7 +13,7 @@
   overflow: hidden;
   border-radius: var(--radius-2xl, 16px);
   background: var(--surface-1);
-  border: 1px solid rgba(255, 255, 255, 0.55);
+  border: none;
   box-shadow: var(--shadow-sm);
   margin-bottom: 20px;
 }
@@ -295,7 +295,7 @@
   border-radius: var(--radius-2xl, 16px);
   padding: 24px;
   box-shadow: var(--shadow-sm);
-  border: 1px solid rgba(255, 255, 255, 0.55);
+  border: none;
 }
 
 /* Tab 栏增强 */