v26110257 首页孕妈广场卡堆首次露出时演示左右滑动（只演一次，等首页引导关闭后）

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

js/gch/v4.css

@@ -91,3 +91,10 @@
 @media (prefers-reduced-motion: reduce){
   #gcHome.gv4 .g4-card,#gcHome.gv4 .g4-cat button{transition:none!important}
 }
+
+/* 11-03 首次进首页的「可以左右滑」提示：小手 + 气泡，压在卡堆中间偏右 */
+#gcHome.gv4 .g4-hint{position:absolute;left:0;right:40px;top:50%;z-index:40;display:flex;flex-direction:column;align-items:center;gap:10px;pointer-events:none;transform:translateY(-50%);transition:opacity .25s}
+#gcHome.gv4 .g4-hint.off{opacity:0}
+#gcHome.gv4 .g4-hand{width:46px;height:46px;margin-left:70px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.92);box-shadow:0 6px 18px rgba(80,30,20,.28)}
+#gcHome.gv4 .g4-hand svg{width:26px;height:26px;fill:none;stroke:#E2694A;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
+#gcHome.gv4 .g4-hint b{padding:6px 12px;border-radius:99px;background:rgba(42,30,30,.72);color:#fff;font-size:12.5px;font-weight:700;letter-spacing:.5px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}