diff --git a/web/static/css/style.css b/web/static/css/style.css
index 8531cdcb..73677e60 100644
--- a/web/static/css/style.css
+++ b/web/static/css/style.css
@@ -7226,16 +7226,15 @@ header {
 }
 
 .mcp-stats-timeline-dot {
-    fill: #fff;
-    stroke: #3b82f6;
-    stroke-width: 1.5;
+    fill: #3b82f6;
+    stroke: none;
     cursor: crosshair;
     opacity: 0;
-    transition: opacity 0.12s ease;
+    transition: opacity 0.12s ease, r 0.12s ease;
 }
 
 .mcp-stats-timeline-dot--peak {
-    opacity: 0.7;
+    opacity: 0.85;
 }
 
 .mcp-stats-timeline__chart-wrap:hover .mcp-stats-timeline-dot,
@@ -7244,9 +7243,7 @@ header {
 }
 
 .mcp-stats-timeline-dot.is-active {
-    fill: #2563eb;
-    stroke: #fff;
-    stroke-width: 2;
+    fill: #1d4ed8;
 }
 
 .mcp-stats-timeline-error {
diff --git a/web/static/js/chat.js b/web/static/js/chat.js
index ddfb60c0..2b3600cc 100644
--- a/web/static/js/chat.js
+++ b/web/static/js/chat.js
@@ -7468,8 +7468,11 @@ async function deleteSelectedConversations() {
         for (const id of ids) {
             await deleteConversation(id, true); // 跳过内部确认，因为批量删除时已经确认过了
         }
-        closeBatchManageModal();
-        loadConversationsWithGroups();
+        // 删除后保持弹窗打开，便于继续管理剩余对话
+        const selectAll = document.getElementById('batch-select-all');
+        if (selectAll) {
+            selectAll.checked = false;
+        }
     } catch (error) {
         console.error('删除失败:', error);
         const failedMsg = typeof window.t === 'function' ? window.t('batchManageModal.deleteFailed') : '删除失败';
diff --git a/web/static/js/monitor.js b/web/static/js/monitor.js
index ecabf5fd..ab4c296b 100644
--- a/web/static/js/monitor.js
+++ b/web/static/js/monitor.js
@@ -3887,7 +3887,7 @@ function buildMcpTimelineSvg(points, rangeKey) {
         const tipTime = formatMcpTimelineLabel(c.p.t, rangeKey, locale);
         const isPeak = c.i === peakIdx && (c.p.total || 0) > 0;
         const dotClass = 'mcp-stats-timeline-dot' + (isPeak ? ' mcp-stats-timeline-dot--peak' : '');
-        return `<circle class="${dotClass}" cx="${c.x.toFixed(2)}" cy="${c.y.toFixed(2)}" r="${isPeak ? 3 : 2.5}"
+        return `<circle class="${dotClass}" cx="${c.x.toFixed(2)}" cy="${c.y.toFixed(2)}" r="${isPeak ? 2 : 1.5}"
             data-time="${escapeHtml(tipTime)}"
             data-total="${c.p.total || 0}"
             data-failed="${c.p.failed || 0}" />`;
@@ -3895,7 +3895,7 @@ function buildMcpTimelineSvg(points, rangeKey) {
 
     const peakC = coords[peakIdx];
     const peakMarker = (peakC.p.total || 0) > 0
-        ? `<circle class="mcp-stats-timeline-peak-glow" cx="${peakC.x.toFixed(2)}" cy="${peakC.y.toFixed(2)}" r="7" />`
+        ? `<circle class="mcp-stats-timeline-peak-glow" cx="${peakC.x.toFixed(2)}" cy="${peakC.y.toFixed(2)}" r="5" />`
         : '';
 
     return `<svg class="mcp-stats-timeline__chart" viewBox="0 0 ${W} ${H}" preserveAspectRatio="none" aria-hidden="true">