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/frontend/forum/topic.css

@@ -23,8 +23,8 @@
 .aksrt-forum-topic__sidebar-card {
     padding: 18px;
     background: var(--surface-1, #fff);
-    border: 1px solid rgba(255, 255, 255, 0.55);
-    border-radius: var(--radius-lg, 10px);
+    border: none;
+    border-radius: var(--main-radius, var(--radius, 8px));
     box-shadow: var(--shadow-sm);
 }
 
@@ -206,7 +206,7 @@
 .aksrt-forum-topic__content {
     padding: 22px;
     background: var(--surface-1, #fff);
-    border: 1px solid rgba(255, 255, 255, 0.55);
+    border: none;
     border-radius: var(--radius-2xl, 16px);
     box-shadow: var(--shadow-sm);
     margin-bottom: 24px;
@@ -224,7 +224,7 @@
     margin-bottom: 24px;
     padding: 20px;
     background: var(--surface-1, #fff);
-    border: 1px solid rgba(255, 255, 255, 0.55);
+    border: none;
     border-radius: var(--radius-2xl, 16px);
     box-shadow: var(--shadow-sm);
 }
@@ -340,7 +340,7 @@
 .aksrt-forum-topic__reply-form {
     padding: 20px;
     background: var(--surface-1, #fff);
-    border: 1px solid rgba(255, 255, 255, 0.55);
+    border: none;
     border-radius: var(--radius-2xl, 16px);
     box-shadow: var(--shadow-sm);
 }