Align forum shop and user page shells

assets/css/frontend/forum/topic.css

@@ -3,12 +3,71 @@
  * ============================================================ */
 
 .aksrt-forum-topic {
+    display: grid;
+    grid-template-columns: minmax(0, 1fr) 280px;
+    gap: 24px;
     padding-top: 24px;
     padding-bottom: 48px;
-    max-width: 800px;
-    margin: 0 auto;
 }
 
+.aksrt-forum-topic__shell {
+    min-width: 0;
+}
+
+.aksrt-forum-topic__sidebar {
+    display: flex;
+    flex-direction: column;
+    gap: 16px;
+}
+
+.aksrt-forum-topic__sidebar-card {
+    padding: 18px;
+    background: var(--surface-1, #fff);
+    border: 1px solid var(--color-line-soft, rgba(0,0,0,0.06));
+    border-radius: 14px;
+    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
+}
+
+.aksrt-forum-topic__sidebar-card h2 {
+    margin: 0 0 12px;
+    font-size: 15px;
+}
+
+.aksrt-forum-topic__sidebar-link {
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+    color: inherit;
+    text-decoration: none;
+}
+
+.aksrt-forum-topic__sidebar-link span {
+    font-size: 13px;
+    color: var(--color-ink-3, #8a909c);
+}
+
+.aksrt-forum-topic__sidebar-author {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+}
+
+.aksrt-forum-topic__sidebar-author img {
+    border-radius: 50%;
+}
+
+.aksrt-forum-topic__sidebar-author strong,
+.aksrt-forum-topic__board-link {
+    color: var(--color-ink);
+}
+
+.aksrt-forum-topic__board-link-wrap {
+    display: inline-flex;
+    align-items: center;
+    gap: 6px;
+}
+
+
 .aksrt-forum-topic__breadcrumb {
     font-size: 13px;
     color: var(--color-ink-4, #8a909c);
@@ -325,6 +384,12 @@
     font-size: 14px;
 }
 
+@media (max-width: 960px) {
+    .aksrt-forum-topic {
+        grid-template-columns: minmax(0, 1fr);
+    }
+}
+
 .aksrt-forum-topic__login-notice a {
     color: var(--color-primary);
 }