diff --git a/.memory/worklog.json b/.memory/worklog.json
index aa21d92..1147318 100644
--- a/.memory/worklog.json
+++ b/.memory/worklog.json
@@ -2215,6 +2215,19 @@
       "type": "session-heartbeat",
       "message": "Codex 会话活跃 · 最近命令：codex · 1 项未提交变更 · 最近提交：auto-save 2026-05-13 19:28 (~4)",
       "files_changed": 1
+    },
+    {
+      "ts": "2026-05-13T19:34:17+08:00",
+      "type": "commit",
+      "message": "auto-save 2026-05-13 19:34 (~4)",
+      "hash": "1ea6f0d",
+      "files_changed": 4
+    },
+    {
+      "ts": "2026-05-13T11:39:29Z",
+      "type": "session-heartbeat",
+      "message": "Codex 会话活跃 · 最近命令：codex · 3 项未提交变更 · 最近提交：auto-save 2026-05-13 19:34 (~4)",
+      "files_changed": 3
     }
   ]
 }
diff --git a/docs/source-analysis.html b/docs/source-analysis.html
index 2502d62..82d9599 100644
--- a/docs/source-analysis.html
+++ b/docs/source-analysis.html
@@ -830,6 +830,17 @@ api/main.py
         <h2>变更记录</h2>
         <p>这个记录不是 git log 的替代品。它记录“产品理解发生了什么变化、影响了哪些源码、你以后描述需求时该怎么说”。后续每次改功能都要补一条。</p>
         <div class="changelog">
+          <article class="change">
+            <header>
+              <h3>2026-05-13 · 钉住关键帧详情不再触发尺寸跳变</h3>
+              <span class="tag orange">KeyframePanelNode</span>
+            </header>
+            <div class="body">
+              <p><strong>问题：</strong>钉住时面板从 ReactFlow 画布节点切到浏览器上层浮层，原本被画布 zoom 缩放过的视觉尺寸会丢失，表现为突然放大或缩小。</p>
+              <p><strong>改动：</strong>钉住瞬间只冻结当前屏幕缩放比例，不改面板自身 <code>framePanelScale</code>；右下角拖拽缩放也按冻结比例换算。</p>
+              <p><strong>影响：</strong><code>web/components/nodes/index.tsx</code>；钉住只改变“是否跟随画布”，不再顺手改变面板大小。</p>
+            </div>
+          </article>
           <article class="change">
             <header>
               <h3>2026-05-13 · 关键帧详情支持右下角拖拽缩放和上层钉住</h3>
diff --git a/web/components/nodes/index.tsx b/web/components/nodes/index.tsx
index 5b223cf..b634cca 100644
--- a/web/components/nodes/index.tsx
+++ b/web/components/nodes/index.tsx
@@ -517,6 +517,7 @@ export function KeyframePanelNode({ data }: any) {
   const { getZoom } = useReactFlow()
   const panelRef = useRef<HTMLDivElement>(null)
   const [pinRect, setPinRect] = useState<{ left: number; top: number }>({ left: 24, top: 72 })
+  const [pinScreenScale, setPinScreenScale] = useState(1)
   if (!d.job || d.expandedFrame === null) return null
   const active = d.job.frames.find((f) => f.index === d.expandedFrame)
   const scale = d.framePanelScale ?? 1
@@ -533,6 +534,7 @@ export function KeyframePanelNode({ data }: any) {
     if (!pinned) {
       const rect = panelRef.current?.getBoundingClientRect()
       if (rect) {
+        setPinScreenScale(rect.width > 0 ? rect.width / panelWidth : 1)
         setPinRect({
           left: Math.max(12, Math.min(window.innerWidth - Math.min(rect.width, window.innerWidth - 24), rect.left)),
           top: Math.max(12, Math.min(window.innerHeight - 80, rect.top)),
@@ -548,7 +550,7 @@ export function KeyframePanelNode({ data }: any) {
     const startX = e.clientX
     const startY = e.clientY
     const startScale = scale
-    const zoom = pinned ? 1 : getZoom()
+    const zoom = pinned ? pinScreenScale : getZoom()
     const onMove = (ev: PointerEvent) => {
       const dx = (ev.clientX - startX) / zoom
       const dy = (ev.clientY - startY) / zoom
@@ -656,7 +658,12 @@ export function KeyframePanelNode({ data }: any) {
     return createPortal(
       <div
         className="fixed z-[240]"
-        style={{ left: pinRect.left, top: pinRect.top }}
+        style={{
+          left: pinRect.left,
+          top: pinRect.top,
+          transform: `scale(${pinScreenScale})`,
+          transformOrigin: "top left",
+        }}
       >
         {panel}
       </div>,