Polish overview panel hierarchy

frontend/src/styles/app.css

@@ -359,7 +359,10 @@ section {
 
 .workbench-status-strip {
   margin: 1rem 0;
-  box-shadow: var(--shadow);
+  border-color: #bdd0c5;
+  padding: 0.9rem;
+  background: linear-gradient(180deg, #ffffff, #f7fbf8);
+  box-shadow: 0 8px 22px rgba(33, 48, 41, 0.05);
 }
 
 .status-strip-header {
@@ -367,11 +370,13 @@ section {
   gap: 1rem;
   align-items: flex-start;
   justify-content: space-between;
-  margin-bottom: 0.8rem;
+  margin-bottom: 0.72rem;
 }
 
 .status-strip-header h2 {
   margin-bottom: 0;
+  font-size: 1.32rem;
+  line-height: 1.15;
 }
 
 .status-next-action {
@@ -382,26 +387,31 @@ section {
 }
 
 .status-strip-grid {
-  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
+  grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
+  gap: 0.58rem;
 }
 
 .status-tile {
-  min-height: 6.7rem;
+  display: grid;
+  align-content: start;
+  min-height: 5.85rem;
   border-left: 4px solid #64748b;
-  padding: 0.7rem;
+  padding: 0.62rem 0.68rem;
+  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.74);
 }
 
 .status-tile strong {
   display: block;
-  margin-top: 0.48rem;
-  font-size: 1.02rem;
+  margin-top: 0.36rem;
+  font-size: 0.98rem;
   line-height: 1.22;
 }
 
 .status-tile p {
-  margin: 0.32rem 0 0;
+  margin: 0.24rem 0 0;
   color: var(--muted);
-  font-size: 0.86rem;
+  font-size: 0.82rem;
+  line-height: 1.34;
 }
 
 .status-tile-ready {
@@ -830,11 +840,20 @@ section li strong + div {
   grid-template-columns: minmax(0, 1fr) minmax(16rem, 24rem);
   gap: 1rem;
   align-items: center;
+  border-left: 4px solid var(--accent);
+  background: linear-gradient(135deg, rgba(15, 118, 110, 0.08), rgba(255, 255, 255, 0.82));
+  box-shadow: 0 8px 20px rgba(33, 48, 41, 0.045);
+}
+
+.overview-action-copy {
+  max-width: 46rem;
 }
 
 .overview-actions h2 {
   max-width: 42rem;
   margin-bottom: 0.5rem;
+  font-size: 1.22rem;
+  line-height: 1.22;
 }
 
 .quick-action-grid {
@@ -843,8 +862,16 @@ section li strong + div {
   gap: 0.65rem;
 }
 
+.overview-quick-actions {
+  align-self: stretch;
+}
+
+.quick-action-button,
 .quick-action-grid button {
+  display: grid;
+  align-content: center;
   min-height: 4.25rem;
+  text-align: center;
 }
 
 section form,