总览增加实时汇总：在线/离线、仓位、浮盈、权利金、余额，并按 sim/live 分列。

Co-authored-by: Cursor <cursoragent@cursor.com>

static/hub.css

@@ -327,6 +327,74 @@ button, .btn {
 .overview-table .status-off { color: var(--bad); }
 .overview-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
 .overview-actions .btn { margin-top: 0; }
+
+.overview-summary {
+  display: grid;
+  gap: 12px;
+  margin: 0 0 14px;
+}
+.overview-kpi-split {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 12px;
+}
+.overview-kpi-block {
+  padding: 12px 14px;
+  border-radius: var(--radius);
+  border: 1px solid var(--line);
+  background: var(--panel);
+  box-shadow: var(--shadow);
+  backdrop-filter: blur(10px);
+}
+.overview-kpi-block--sim {
+  border-color: rgba(56, 189, 248, 0.28);
+}
+.overview-kpi-block--live {
+  border-color: rgba(52, 211, 153, 0.28);
+}
+.overview-kpi-head {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: 8px;
+  margin-bottom: 10px;
+}
+.overview-kpi-head strong {
+  font-size: 0.92rem;
+  letter-spacing: 0.02em;
+}
+.overview-kpi-grid {
+  display: grid;
+  grid-template-columns: repeat(6, minmax(0, 1fr));
+  gap: 8px;
+}
+.overview-kpi-card {
+  padding: 8px 10px;
+  border-radius: 10px;
+  border: 1px solid rgba(56, 189, 248, 0.12);
+  background: rgba(5, 12, 22, 0.5);
+  min-width: 0;
+}
+.overview-kpi-label {
+  font-size: 0.72rem;
+  color: var(--muted);
+  margin-bottom: 4px;
+}
+.overview-kpi-value {
+  font-size: 0.95rem;
+  font-weight: 700;
+  font-variant-numeric: tabular-nums;
+  word-break: break-word;
+}
+.overview-kpi-value.status-on { color: var(--ok); }
+.overview-kpi-value.status-off { color: var(--bad); }
+@media (max-width: 1100px) {
+  .overview-kpi-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
+}
+@media (max-width: 800px) {
+  .overview-kpi-split { grid-template-columns: 1fr; }
+  .overview-kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
+}
 .pos-brief {
   margin: 0;
   padding-left: 0;