Align forum shop and user page shells

assets/css/frontend/forum/board.css

@@ -1,8 +1,58 @@
-/* ============================================================
- * Forum — 板块页、主题页、发帖页
- * ============================================================ */
+/* Forum home-shell refinement */
+.aksrt-forum-board__hero {
+    margin-bottom: 20px;
+    padding: 20px;
+    border-radius: 16px;
+    background: linear-gradient(180deg, rgba(59,130,246,0.06), rgba(255,255,255,0.96));
+    border: 1px solid var(--color-line-soft, rgba(0,0,0,0.06));
+}
+
+.aksrt-forum-board__summary {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 12px;
+    margin-top: 16px;
+}
+
+.aksrt-forum-board__summary-item {
+    min-width: 120px;
+    padding: 10px 14px;
+    border-radius: 999px;
+    background: var(--surface-1, #fff);
+    border: 1px solid var(--color-line-soft, rgba(0,0,0,0.06));
+}
+
+.aksrt-forum-board__summary-label {
+    display: block;
+    margin-bottom: 4px;
+    font-size: 12px;
+    color: var(--color-ink-4, #8a909c);
+}
+
+.aksrt-forum-board__layout {
+    align-items: start;
+}
+
+.aksrt-forum-board__governance--inline {
+    margin-bottom: 20px;
+}
+
+.aksrt-forum-board__sidebar {
+    display: flex;
+    flex-direction: column;
+    gap: 16px;
+}
+
+.aksrt-forum-board__governance-card--sidebar {
+    position: sticky;
+    top: calc(var(--nav-height, 64px) + 16px);
+}
+
+.aksrt-forum-board__moderators--stacked {
+    flex-direction: column;
+    align-items: stretch;
+}
 
-/* Board page */
 .aksrt-forum-board {
     padding-top: 24px;
     padding-bottom: 48px;