diff --git a/web/app.js b/web/app.js
index 095b75a..a8eb85c 100644
--- a/web/app.js
+++ b/web/app.js
@@ -1152,7 +1152,7 @@ function chevronSvg(expanded) {
   return '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.7" style="width:12px;height:12px;display:inline-block;vertical-align:-1px;margin-right:6px;"><path d="m9 18 6-6-6-6"/></svg>';
 }
 
-function renderDashDetail(payload, { expandFirst = true } = {}) {
+function renderDashDetail(payload, { expandFirst = false } = {}) {
   const tbody = $("#dashDetailRows");
   const title = $("#dashDetailTitle");
   if (!tbody) return;
@@ -1204,15 +1204,28 @@ function renderDashDetail(payload, { expandFirst = true } = {}) {
   tbody.replaceChildren(...rows);
 }
 
+async function resolveDashStartDate() {
+  if (state.dashFrom) return state.dashFrom;
+  const response = await fetch("/api/admin/settings").catch(() => null);
+  if (response?.ok) {
+    const result = await response.json().catch(() => null);
+    const startDate = result?.settings?.start_date;
+    if (startDate) {
+      state.dashFrom = startDate;
+      return startDate;
+    }
+  }
+  return "2026-01-01";
+}
+
 async function loadDashCompanyDetail(companyId) {
   if (!companyId) return;
   state.dashSelectedId = companyId;
   renderDashCompanyRows(state.dashCompanies || [], companyId);
   const tbody = $("#dashDetailRows");
   if (tbody) tbody.innerHTML = '<tr class="loading-row"><td colspan="6">加载中…</td></tr>';
-  const from = state.dashFrom || "2026-01-01";
-  const cutoff = state.dashCutoff || "2026-08-20";
-  const response = await fetch(`/api/admin/dashboard/companies/${companyId}?from=${encodeURIComponent(from)}&cutoff=${encodeURIComponent(cutoff)}`).catch(() => null);
+  const from = await resolveDashStartDate();
+  const response = await fetch(`/api/admin/dashboard/companies/${companyId}?from=${encodeURIComponent(from)}`).catch(() => null);
   if (!response?.ok) {
     if (tbody) tbody.innerHTML = '<tr><td colspan="6" class="muted">明细加载失败</td></tr>';
     return;
@@ -1223,7 +1236,8 @@ async function loadDashCompanyDetail(companyId) {
 
 async function loadAdminDashboard() {
   if (!$("#dashCompanyRows")) return;
-  const response = await fetch("/api/admin/dashboard?from=2026-01-01&cutoff=2026-08-20").catch(() => null);
+  const from = await resolveDashStartDate();
+  const response = await fetch(`/api/admin/dashboard?from=${encodeURIComponent(from)}`).catch(() => null);
   if (!response?.ok) {
     $("#dashCompanyRows").innerHTML = '<tr><td colspan="4" class="muted">总览加载失败</td></tr>';
     return;
@@ -1239,10 +1253,7 @@ async function loadAdminDashboard() {
   updateDashAuditCard(data.audit);
   state.dashAuditFromApi = true;
   const statusHead = $("#dashStatusHead");
-  if (statusHead) {
-    // Align with the static「7 月账期」cards on the same page until monthly-close exists.
-    statusHead.textContent = "7月状态";
-  }
+  if (statusHead && data.period_month) statusHead.textContent = `${data.period_month}月状态`;
   const listSub = $("#dashListSub");
   if (listSub) listSub.textContent = `${data.from_date} 至 ${data.cutoff} · 单位：万元`;
   renderBarChart(state.dashCompanies);