feat(M08-B): 补联调执行阶段看板

admin/src/styles.css

@@ -569,6 +569,73 @@ textarea {
   font-size: 12px;
 }
 
+.handoff-stage-board {
+  display: grid;
+  gap: 10px;
+  padding: 12px;
+  border: 1px solid #d6e4dc;
+  border-radius: 8px;
+  background: #f8fcfa;
+}
+
+.handoff-stage-board header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.handoff-stage-board h3 {
+  margin: 0;
+  font-size: 14px;
+}
+
+.handoff-stage-board header span {
+  color: #60708a;
+  font-size: 12px;
+}
+
+.handoff-stage-grid {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+  gap: 10px;
+}
+
+.handoff-stage-card {
+  display: grid;
+  gap: 5px;
+  min-width: 0;
+  padding: 10px;
+  border: 1px solid #d6e4dc;
+  border-radius: 8px;
+  background: #ffffff;
+  color: #172033;
+  text-align: left;
+  cursor: pointer;
+}
+
+.handoff-stage-card.blocked {
+  border-color: #f0c7c7;
+  background: #fff7f7;
+}
+
+.handoff-stage-card.ready {
+  border-color: #b8dec4;
+  background: #f3fbf5;
+}
+
+.handoff-stage-card span,
+.handoff-stage-card em,
+.handoff-stage-card small {
+  color: #60708a;
+  font-size: 12px;
+  font-style: normal;
+}
+
+.handoff-stage-card strong {
+  font-size: 15px;
+}
+
 .handoff-owner-board {
   display: grid;
   gap: 10px;
@@ -803,6 +870,10 @@ textarea {
     grid-template-columns: repeat(2, minmax(0, 1fr));
   }
 
+  .handoff-stage-grid {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+
   .trend-row {
     grid-template-columns: 92px minmax(80px, 1fr);
   }
@@ -826,6 +897,10 @@ textarea {
     grid-template-columns: 1fr;
   }
 
+  .handoff-stage-grid {
+    grid-template-columns: 1fr;
+  }
+
   .action-board {
     grid-template-columns: 1fr;
   }