diff --git a/.memory/worklog.json b/.memory/worklog.json
index bdbaa91..c8383fd 100644
--- a/.memory/worklog.json
+++ b/.memory/worklog.json
@@ -237,6 +237,13 @@
       "message": "auto-save 2026-05-12 19:14 (~3)",
       "hash": "30a4c46",
       "files_changed": 3
+    },
+    {
+      "ts": "2026-05-12T19:20:15+08:00",
+      "type": "commit",
+      "message": "auto-save 2026-05-12 19:20 (~3)",
+      "hash": "5a86328",
+      "files_changed": 3
     }
   ]
 }
diff --git a/web/app/page.tsx b/web/app/page.tsx
index 9bf7dfc..6add56d 100644
--- a/web/app/page.tsx
+++ b/web/app/page.tsx
@@ -240,10 +240,10 @@ export default function Home() {
           <ThemeToggle />
         </header>
 
-        {/* 左侧：竖向 tile 看板（窄版） */}
+        {/* 左侧：竖向 tile 看板（极窄） */}
         <aside
           className="relative z-10 flex-shrink-0 border-r border-white/5 bg-black/20 backdrop-blur-xl overflow-y-auto"
-          style={{ width: 144 }}
+          style={{ width: 108 }}
         >
           <Dashboard data={nodeData} />
         </aside>
diff --git a/web/components/dashboard.tsx b/web/components/dashboard.tsx
index f53d7ea..2dc7de0 100644
--- a/web/components/dashboard.tsx
+++ b/web/components/dashboard.tsx
@@ -1,5 +1,6 @@
 "use client"
-import { useRef, useState, type ReactNode } from "react"
+import { useEffect, useRef, useState, type ReactNode } from "react"
+import { createPortal } from "react-dom"
 import {
   Link2, Upload, Download, Scissors, Image as ImageIcon,
   Mic, Languages, FileEdit, Sparkles, Film, FileVideo, Loader2, Plus, Check,
@@ -80,6 +81,8 @@ export function Dashboard({ data }: Props) {
   const [videoT, setVideoT] = useState(0)
   const [addingFrame, setAddingFrame] = useState(false)
   const [expanded, setExpanded] = useState<Set<string>>(new Set())
+  const [mounted, setMounted] = useState(false)
+  useEffect(() => setMounted(true), [])
   const tileRefs = useRef<Record<string, HTMLButtonElement | null>>({})
   const fileRef = useRef<HTMLInputElement>(null)
   const videoRef = useRef<HTMLVideoElement>(null)
@@ -149,40 +152,35 @@ export function Dashboard({ data }: Props) {
         ref={(el) => { tileRefs.current[t.key] = el }}
         type="button"
         onClick={() => toggleTile(t.key)}
-        title={colSummary[t.key]}
-        className={`group w-full rounded-md overflow-hidden border flex items-stretch transition ${
+        title={`${t.title} · ${colSummary[t.key]}`}
+        className={`group w-full rounded-md overflow-hidden border flex items-center transition relative ${
           isOpen ? "border-violet-400/70 ring-2 ring-violet-400/40 shadow-lg shadow-violet-500/20" : "border-white/10 hover:border-white/20"
         }`}
-        style={{ height: 30 }}
+        style={{ height: 28 }}
       >
-        <div className="px-1.5 flex items-center gap-1.5 flex-1 min-w-0" style={{ background: TYPE_GRAD[t.type] }}>
+        <div className="px-1.5 flex items-center gap-1 flex-1 min-w-0" style={{ background: TYPE_GRAD[t.type] }}>
           <span className="text-white shrink-0">{t.icon}</span>
-          <span className="text-white text-[11.5px] font-medium truncate">{t.title}</span>
-        </div>
-        <div className="px-1.5 flex items-center bg-black/40 shrink-0">
-          <span className={`h-1.5 w-1.5 rounded-full ${STATE_DOT[state]}`} />
+          <span className="text-white text-[11px] font-medium truncate">{t.title}</span>
         </div>
+        <span className={`absolute right-1.5 h-1.5 w-1.5 rounded-full ${STATE_DOT[state]} ring-2 ring-black/40`} />
       </button>
     )
   }
 
   return (
-    <div className="h-full flex flex-col gap-1.5 p-2.5">
-      <div className="text-[9.5px] uppercase tracking-[0.25em] text-[var(--text-faint)] px-1 pb-0.5">Pipeline</div>
+    <div className="h-full flex flex-col gap-1 p-1.5">
       {/* 主线：input / download / split */}
       <Tile tkey="input" />
       <Tile tkey="download" />
       <Tile tkey="split" />
       {/* 分叉：上路 关键帧/生图/生视频 */}
-      <div className="border-l-2 border-violet-400/30 pl-2 ml-2 space-y-1.5">
-        <div className="text-[9px] uppercase tracking-widest text-[var(--text-faint)]">视频路</div>
+      <div className="border-l-2 border-violet-400/30 pl-1.5 ml-1 space-y-1">
         <Tile tkey="keyframe" />
         <Tile tkey="imagegen" />
         <Tile tkey="videogen" />
       </div>
       {/* 分叉：下路 转录/翻译/改写 */}
-      <div className="border-l-2 border-pink-400/30 pl-2 ml-2 space-y-1.5">
-        <div className="text-[9px] uppercase tracking-widest text-[var(--text-faint)]">音频路</div>
+      <div className="border-l-2 border-pink-400/30 pl-1.5 ml-1 space-y-1">
         <Tile tkey="asr" />
         <Tile tkey="translate" />
         <Tile tkey="rewrite" />
@@ -190,11 +188,11 @@ export function Dashboard({ data }: Props) {
       {/* 合流 */}
       <Tile tkey="compose" />
 
-      {/* 展开面板 — 离 sidebar 一段距离，明显"飞出"悬浮 */}
-      {expanded.size > 0 && (
+      {/* 展开面板 — 用 portal 渲染到 body 避免 backdrop-filter 影响 fixed 定位 */}
+      {expanded.size > 0 && mounted && createPortal(
         <div
-          className="fixed z-40"
-          style={{ left: 168, top: 16, bottom: 16, width: 400 }}
+          className="fixed z-[100]"
+          style={{ left: 130, top: 16, bottom: 16, width: 400 }}
         >
           {TILES.filter((t) => expanded.has(t.key)).map((t) => (
             <section
@@ -225,7 +223,8 @@ export function Dashboard({ data }: Props) {
               </div>
             </section>
           ))}
-        </div>
+        </div>,
+        document.body
       )}
     </div>
   )
diff --git a/web/components/nodes/index.tsx b/web/components/nodes/index.tsx
index 26d1cf2..db58400 100644
--- a/web/components/nodes/index.tsx
+++ b/web/components/nodes/index.tsx
@@ -272,7 +272,7 @@ export function KeyframeNode({ data, selected }: any) {
                 key={f.index}
                 onClick={(e) => { e.stopPropagation(); d.onExpandFrame(f.index) }}
                 title={`第 ${f.index + 1} 张 · ${f.timestamp.toFixed(1)}s · 点击放大`}
-                className={`group relative overflow-hidden rounded-md border transition shadow-lg hover:scale-110 hover:-translate-y-1 ${
+                className={`group relative rounded-md border transition shadow-lg hover:-translate-y-0.5 ${
                   isSel
                     ? "border-emerald-400 ring-2 ring-emerald-400/60"
                     : "border-white/30 dark:border-white/20"
@@ -282,15 +282,39 @@ export function KeyframeNode({ data, selected }: any) {
                 <img
                   src={frameUrl(jobId, f.index)}
                   alt={`frame ${f.index}`}
-                  className="absolute inset-0 w-full h-full object-cover"
+                  className="absolute inset-0 w-full h-full object-cover rounded-md"
                 />
                 {isSel && (
-                  <div className="absolute inset-0 bg-emerald-400/15" />
+                  <div className="absolute inset-0 bg-emerald-400/15 rounded-md pointer-events-none" />
                 )}
                 {/* 时间戳 */}
-                <div className="absolute bottom-0 right-0 bg-black/70 text-white text-[8.5px] font-mono px-1 py-0.5 leading-none">
+                <div className="absolute bottom-0 right-0 bg-black/70 text-white text-[8.5px] font-mono px-1 py-0.5 leading-none rounded-bl rounded-br-md">
                   {f.timestamp.toFixed(1)}s
                 </div>
+
+                {/* Hover 大图预览 */}
+                <div
+                  className="pointer-events-none absolute opacity-0 group-hover:opacity-100 scale-90 group-hover:scale-100 transition-all duration-200 z-[60]"
+                  style={{
+                    bottom: "calc(100% + 8px)",
+                    left: "50%",
+                    transform: "translateX(-50%)",
+                    transformOrigin: "bottom center",
+                  }}
+                >
+                  <div className="rounded-xl overflow-hidden border border-white/20 shadow-2xl bg-black">
+                    <img
+                      src={frameUrl(jobId, f.index)}
+                      alt={`preview ${f.index}`}
+                      className="block"
+                      style={{ width: KEYFRAME_WIDTH, height: "auto", maxHeight: "70vh" }}
+                    />
+                    <div className="flex items-center justify-between px-2.5 py-1.5 bg-black/60 backdrop-blur-md">
+                      <span className="text-white text-[11px]">分镜 {f.index + 1}</span>
+                      <span className="text-white/60 text-[10px] font-mono">{f.timestamp.toFixed(2)}s</span>
+                    </div>
+                  </div>
+                </div>
               </button>
             )
           })}