Polish vendor stockout home mobile layout

web/static/css/page-vendor-index.css

@@ -290,15 +290,119 @@
 }
 
 @media (max-width: 720px) {
+  .vendor-v2-stack {
+    gap: 16px;
+  }
+
   .vendor-hero,
-  .vendor-kpi-grid,
-  .vendor-flow-grid,
   .vendor-summary-grid {
     grid-template-columns: 1fr;
   }
+
+  .vendor-hero-panel {
+    min-height: auto;
+    padding: 16px;
+  }
+
+  .vendor-actions {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 8px;
+    margin-top: 16px;
+  }
+
+  .vendor-action {
+    justify-content: center;
+    min-height: 36px;
+    padding: 8px 10px;
+  }
+
+  .vendor-action:nth-child(3) {
+    grid-column: 1 / -1;
+  }
+
+  .vendor-pulse {
+    padding: 14px 16px;
+  }
+
+  .vendor-pulse-value {
+    margin-top: 6px;
+    font-size: 26px;
+  }
+
+  .vendor-pulse-meta {
+    margin-top: 8px;
+    line-height: 1.55;
+  }
+
+  .vendor-kpi-grid,
+  .vendor-flow-grid {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 8px;
+  }
+
+  .vendor-card {
+    min-width: 0;
+    padding: 12px;
+  }
+
+  .vendor-kpi-value {
+    margin-top: 6px;
+    font-size: 22px;
+  }
+
+  .vendor-kpi-sub {
+    margin-top: 6px;
+    font-size: 10px;
+  }
+
+  .vendor-flow-card {
+    min-height: 108px;
+    padding: 12px;
+  }
+
+  .vendor-flow-card:last-child {
+    grid-column: 1 / -1;
+  }
+
+  .vendor-flow-icon {
+    width: 30px;
+    height: 30px;
+  }
+
+  .vendor-flow-title {
+    margin-top: 10px;
+    font-size: 13px;
+  }
+
+  .vendor-table-head {
+    flex-direction: column;
+    align-items: stretch;
+    padding: 12px;
+  }
+
   .vendor-title { font-size: 28px; }
+
   .vendor-summary-item {
+    min-height: auto;
+    padding: 14px;
     border-right: 0;
     border-bottom: 1px solid var(--momo-border-light);
   }
 }
+
+@media (max-width: 420px) {
+  .vendor-title {
+    font-size: 26px;
+  }
+
+  .vendor-subtitle {
+    font-size: 13px;
+    line-height: 1.65;
+  }
+
+  .vendor-card,
+  .vendor-flow-card {
+    padding: 10px;
+  }
+}