merge: resolve conflicts between feat/responsive-layout and master

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/styles/pages/profile.css

@@ -1,5 +1,21 @@
 /* Profile page rules move here as they are retired from legacy-pages.css. */
 
+/* ── 代表作滚动容器：固定3列，刚好显示9个（3行），超出可滚动，隐藏滚动条 ── */
+.profile-page__works-scroll {
+  max-height: 390px;
+  overflow-y: auto;
+  scrollbar-width: none;
+  -ms-overflow-style: none;
+}
+
+.profile-page__works-scroll::-webkit-scrollbar {
+  display: none;
+}
+
+.profile-page__works-scroll .profile-page__list-grid {
+  grid-template-columns: repeat(3, 1fr);
+}
+
 @media (max-width: 900px) {
   .profile-page,
   .auth-page,