diff --git a/.memory/worklog.json b/.memory/worklog.json
index fdae515..16c42f6 100644
--- a/.memory/worklog.json
+++ b/.memory/worklog.json
@@ -2102,6 +2102,13 @@
       "type": "session-heartbeat",
       "message": "Codex 会话活跃 · 最近命令：codex · 2 项未提交变更 · 最近提交：auto-save 2026-05-13 18:24 (~3)",
       "files_changed": 2
+    },
+    {
+      "ts": "2026-05-13T18:29:59+08:00",
+      "type": "commit",
+      "message": "auto-save 2026-05-13 18:29 (~2)",
+      "hash": "bc458b6",
+      "files_changed": 2
     }
   ]
 }
diff --git a/web/components/nodes/index.tsx b/web/components/nodes/index.tsx
index 222252c..f0665fb 100644
--- a/web/components/nodes/index.tsx
+++ b/web/components/nodes/index.tsx
@@ -599,9 +599,17 @@ const IMAGEGEN_WIDTH = 360
 export function StoryboardNode({ data, selected }: any) {
   const d: NodeData = data
   const job = d?.job
+  const [hover, setHover] = useState<{
+    rect: DOMRect
+    name: string
+    elementSrc: string
+    frameSrc: string
+    frameIdx: number
+    timestamp: number
+  } | null>(null)
 
   // 上方浮条 = 所有 frame 的 elements 已提取图（"分镜头编排"的输入素材）
-  type ElPreview = { frameIdx: number; elementId: string; name: string; src: string; cid: string }
+  type ElPreview = { frameIdx: number; elementId: string; name: string; src: string; cid: string; frameSrc: string; timestamp: number }
   const elementCrops: ElPreview[] = job
     ? job.frames.flatMap((f) =>
         (f.elements ?? [])
@@ -611,7 +619,15 @@ export function StoryboardNode({ data, selected }: any) {
             const cid = (e.cutouts && e.cutouts.length > 0)
               ? e.cutouts[e.cutouts.length - 1]
               : (e.cutout_id ?? "")
-            return { frameIdx: f.index, elementId: e.id, name: e.name_zh, src, cid }
+            return {
+              frameIdx: f.index,
+              elementId: e.id,
+              name: e.name_zh,
+              src,
+              cid,
+              frameSrc: effectiveFrameUrl(job.id, f),
+              timestamp: f.timestamp,
+            }
           })
           .filter((p) => p.src),
       )
@@ -637,6 +653,17 @@ export function StoryboardNode({ data, selected }: any) {
                 key={key}
                 className="group relative rounded-md border border-violet-300/50 transition shadow-lg hover:-translate-y-0.5 bg-white overflow-hidden"
                 style={{ aspectRatio: aspect }}
+                onMouseEnter={(e) => {
+                  setHover({
+                    rect: e.currentTarget.getBoundingClientRect(),
+                    name: p.name,
+                    elementSrc: p.src,
+                    frameSrc: p.frameSrc,
+                    frameIdx: p.frameIdx,
+                    timestamp: p.timestamp,
+                  })
+                }}
+                onMouseLeave={() => setHover(null)}
               >
                 <button
                   onClick={(e) => {
@@ -675,32 +702,56 @@ export function StoryboardNode({ data, selected }: any) {
                     📋
                   </button>
                 )}
-                {/* hover 预览 — absolute 浮在缩略图上方 */}
-                <div
-                  className="pointer-events-none absolute opacity-0 group-hover:opacity-100 scale-95 group-hover:scale-100 transition-all duration-150 z-[60]"
-                  style={{
-                    bottom: "calc(100% + 10px)",
-                    left: "50%",
-                    transform: "translateX(-50%)",
-                    transformOrigin: "bottom center",
-                  }}
-                >
-                  <div className="rounded-lg overflow-hidden border-2 border-violet-300/50 bg-white shadow-2xl" style={{ width: 280 }}>
-                    <div style={{ aspectRatio: aspect }}>
-                      <img src={p.src} alt="" className="w-full h-full object-contain" />
-                    </div>
-                    <div className="px-2 py-1 bg-black/80 text-white text-[10.5px] flex items-center justify-between">
-                      <span className="truncate">{p.name}</span>
-                      <span className="text-white/60 font-mono shrink-0 ml-2">分镜 {p.frameIdx + 1}</span>
-                    </div>
-                  </div>
-                </div>
               </div>
             )
           })}
         </div>
       )}
 
+      {job && hover && (() => {
+        const w = 420
+        const h = 300
+        const gap = 12
+        const centerX = hover.rect.left + hover.rect.width / 2
+        const left = Math.max(12, Math.min(window.innerWidth - w - 12, centerX - w / 2))
+        const top = hover.rect.top > h + gap
+          ? hover.rect.top - h - gap
+          : Math.min(window.innerHeight - h - 12, hover.rect.bottom + gap)
+        return createPortal(
+          <div
+            className="fixed z-[180] pointer-events-none"
+            style={{
+              left,
+              top,
+              width: w,
+              animation: "drawer-in 0.18s cubic-bezier(0.32, 0.72, 0, 1)",
+            }}
+          >
+            <div className="overflow-hidden rounded-xl border-2 border-violet-300/60 bg-black shadow-2xl">
+              <div className="grid grid-cols-[1fr_128px] gap-0">
+                <div className="bg-black">
+                  <div className="px-2 py-1 text-[10px] text-white/65">来源原帧</div>
+                  <div style={{ aspectRatio: aspect }}>
+                    <img src={hover.frameSrc} alt="" className="h-full w-full object-cover" />
+                  </div>
+                </div>
+                <div className="border-l border-white/10 bg-white">
+                  <div className="bg-black px-2 py-1 text-[10px] text-white/65">提取元素</div>
+                  <div className="flex h-[calc(100%-22px)] items-center justify-center p-2">
+                    <img src={hover.elementSrc} alt="" className="max-h-full max-w-full object-contain" />
+                  </div>
+                </div>
+              </div>
+              <div className="flex items-center justify-between gap-2 bg-black/90 px-2 py-1.5 text-[10.5px] text-white">
+                <span className="truncate">{hover.name}</span>
+                <span className="shrink-0 font-mono text-white/55">分镜 {hover.frameIdx + 1} · {hover.timestamp.toFixed(2)}s</span>
+              </div>
+            </div>
+          </div>,
+          document.body,
+        )
+      })()}
+
       <NodeShell
         type="ai" status={status}
         icon={<LayoutGrid className="h-4 w-4" />}