diff --git a/src/app/background/index.ts b/src/app/background/index.ts
index 0b4fe5d..9f6dd27 100644
--- a/src/app/background/index.ts
+++ b/src/app/background/index.ts
@@ -167,7 +167,7 @@ async function handleRequest(request: ExtensionRequest, sender: Browser.runtime.
     case 'authorization.yakit.open':
       return ok(await engineBridge.requestEngine(
         'yakit.browser_authorization.open',
-        { workspaceId: request.payload.workspaceId },
+        request.payload,
       ));
     case 'context.capture': {
       const { tabId, frameId, documentId, ...options } = request.payload;
diff --git a/src/entrypoints/options/App.css b/src/entrypoints/options/App.css
index 44eca0d..bad30c2 100644
--- a/src/entrypoints/options/App.css
+++ b/src/entrypoints/options/App.css
@@ -75,6 +75,7 @@ input[type='checkbox'] { width: 15px; height: 15px; flex: 0 0 auto; padding: 0;
 .sidebar-brand .product-brand { width: 100%; color: var(--foreground); }
 .sidebar nav { min-height: 0; padding: 10px 10px 16px; overflow-y: auto; display: grid; gap: 10px; scrollbar-width: thin; }
 .sidebar-group { display: grid; gap: 2px; }
+.sidebar-group.is-primary { padding-bottom: 8px; border-bottom: 1px solid var(--border); }
 .sidebar-group__label { min-height: 24px; padding: 0 10px; display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: var(--text-xs); font-weight: 650; letter-spacing: .04em; }
 .sidebar-group__label svg { color: var(--primary); }
 .sidebar nav button { width: 100%; height: 40px; padding: 0 10px; display: grid; grid-template-columns: 20px 1fr 14px; align-items: center; gap: 8px; border: 0; border-radius: var(--radius-md); background: transparent; color: var(--muted-strong); font-size: var(--text-md); font-weight: 500; text-align: left; cursor: pointer; transition: background-color .14s ease, color .14s ease; }
diff --git a/src/entrypoints/options/App.tsx b/src/entrypoints/options/App.tsx
index a440525..24619fb 100644
--- a/src/entrypoints/options/App.tsx
+++ b/src/entrypoints/options/App.tsx
@@ -2,8 +2,8 @@ import { useCallback, useEffect, useMemo, useState, type ReactNode } from 'react
 import { browser, type Browser } from 'wxt/browser';
 import {
   Activity, AlertTriangle, Bot, Braces, Check, ChevronRight, CircleGauge, CloudDownload, Cookie, Copy,
-  Database, Download, Eye, Fingerprint, History, KeyRound, MousePointer2, Network, Play, Power, Radio,
-  RefreshCw, Route, Save, Search, Send, Server, ShieldCheck, Square, Trash2, Upload, UserRoundCog, Wrench, X,
+  Database, Download, Eye, FileKey2, Fingerprint, History, KeyRound, MousePointer2, Network, Play, Power, Radio,
+  RefreshCw, Route, Save, Search, Send, Server, ShieldCheck, Square, Trash2, Upload, UserRoundCog, X,
 } from 'lucide-react';
 import { ProductBrand, YakitMark } from '@/components/brand/Brand';
 import { Button } from '@/components/ui/button';
@@ -30,37 +30,43 @@ import { errorMessage, request } from '@/platform/messaging/runtime';
 import { APPEARANCE_STORAGE_KEY, getAppearance, setThemePreference, type ThemePreference } from '@/platform/storage/appearance';
 import './App.css';
 
-type Section = 'overview' | 'authorization' | 'proxies' | 'rules' | 'sources' | 'cookies' | 'user-agent' | 'network' | 'context' | 'engine' | 'activity';
+type Section = 'overview' | 'authorization' | 'network' | 'gateway' | 'proxies' | 'rules' | 'sources' | 'cookies' | 'user-agent' | 'context' | 'engine' | 'activity';
 const FIREFOX_AMO_BUILD = import.meta.env.FIREFOX && import.meta.env.MODE === 'store';
 
-const NAVIGATION: Array<{ label: string; icon?: ReactNode; items: Array<{ id: Section; label: string; icon: ReactNode }> }> = [
+const NAVIGATION: Array<{ label?: string; items: Array<{ id: Section; label: string; icon: ReactNode }> }> = [
   {
-    label: '工作区',
+    items: [{ id: 'overview', label: '概览', icon: <CircleGauge size={17} /> }],
+  },
+  {
+    label: '安全测试',
+    items: [{ id: 'authorization', label: '越权测试', icon: <Fingerprint size={17} /> }],
+  },
+  {
+    label: '请求与改写',
     items: [
-      { id: 'overview', label: '运行概览', icon: <CircleGauge size={17} /> },
-      { id: 'authorization', label: '授权测试', icon: <Fingerprint size={17} /> },
+      { id: 'network', label: '请求捕获', icon: <Activity size={17} /> },
+      { id: 'gateway', label: '明文网关', icon: <FileKey2 size={17} /> },
     ],
   },
   {
-    label: '网络与流量',
+    label: '代理',
     items: [
-      { id: 'proxies', label: '代理出口', icon: <Network size={17} /> },
-      { id: 'rules', label: '自动切换', icon: <Route size={17} /> },
+      { id: 'proxies', label: '代理设置', icon: <Network size={17} /> },
+      { id: 'rules', label: '分流规则', icon: <Route size={17} /> },
       { id: 'sources', label: '规则订阅', icon: <CloudDownload size={17} /> },
-      { id: 'network', label: '网络活动', icon: <Activity size={17} /> },
     ],
   },
   {
-    label: '常用工具', icon: <Wrench size={13} />,
+    label: '浏览器工具',
     items: [
-      { id: 'cookies', label: 'Cookie Editor', icon: <Cookie size={17} /> },
-      { id: 'user-agent', label: 'UA 快速切换', icon: <UserRoundCog size={17} /> },
+      { id: 'context', label: '页面上下文', icon: <KeyRound size={17} /> },
+      { id: 'cookies', label: 'Cookie 管理', icon: <Cookie size={17} /> },
+      { id: 'user-agent', label: 'User-Agent', icon: <UserRoundCog size={17} /> },
     ],
   },
   {
-    label: 'Agent 与系统',
+    label: '系统',
     items: [
-      { id: 'context', label: '登录态工作区', icon: <KeyRound size={17} /> },
       { id: 'engine', label: '引擎连接', icon: <Server size={17} /> },
       { id: 'activity', label: '操作记录', icon: <History size={17} /> },
     ],
@@ -204,7 +210,7 @@ function App() {
     <div className="app-shell">
       <aside className="sidebar">
         <div className="sidebar-brand"><ProductBrand /></div>
-        <nav>{NAVIGATION.map((group) => <div className="sidebar-group" key={group.label}><span className="sidebar-group__label">{group.icon}{group.label}</span>{group.items.map((item) => <button key={item.id} className={section === item.id ? 'active' : ''} onClick={() => navigate(item.id)}>{item.icon}<span>{item.label}</span><ChevronRight size={14} /></button>)}</div>)}</nav>
+        <nav>{NAVIGATION.map((group, index) => <div className={`sidebar-group ${index === 0 ? 'is-primary' : ''}`} key={group.label || 'overview'}>{group.label && <span className="sidebar-group__label">{group.label}</span>}{group.items.map((item) => <button key={item.id} className={section === item.id ? 'active' : ''} onClick={() => navigate(item.id)}>{item.icon}<span>{item.label}</span><ChevronRight size={14} /></button>)}</div>)}</nav>
         <div className="sidebar-theme">
           <span>外观</span>
           <select aria-label="界面主题" value={theme} onChange={(event) => { const next = event.target.value as ThemePreference; setTheme(next); void setThemePreference(next); }}>
@@ -239,6 +245,7 @@ function App() {
           {section === 'cookies' && <CookieEditor key={tab?.id || 0} tab={tab} run={run} busy={busy} />}
           {section === 'user-agent' && <UserAgents state={state} setState={setState} tab={tab} run={run} busy={busy} />}
           {section === 'network' && <NetworkActivity key={tab?.id || 0} tab={tab} bridge={bridge} run={run} busy={busy} />}
+          {section === 'gateway' && <GatewayWorkspace key={tab?.id || 0} tab={tab} bridge={bridge} run={run} busy={busy} />}
           {section === 'context' && <ContextTool key={tab?.id || 0} tab={tab} run={run} busy={busy} />}
           {section === 'engine' && <EngineSettings state={state} setState={setState} bridge={bridge} setBridge={setBridge} tabs={tabs} run={run} busy={busy} />}
           {section === 'activity' && <ActivityLog run={run} busy={busy} />}
@@ -537,13 +544,6 @@ function NetworkActivity({
   const [captureHeaders, setCaptureHeaders] = useState(false);
   const [captureBody, setCaptureBody] = useState(false);
   const [query, setQuery] = useState('');
-  const transformShared = bridge.state === 'connected';
-
-  const shareTransform = async () => {
-    if (!tab) throw new Error('请先选择需要使用的页面');
-    if (bridge.state !== 'connected') await request('bridge.connect');
-  };
-
   const load = useCallback(async () => {
     if (!tab) return;
     try {
@@ -655,12 +655,33 @@ function NetworkActivity({
       </aside>
     </div>}
 
+  </div>;
+}
+
+function GatewayWorkspace({
+  tab,
+  bridge,
+  run,
+  busy,
+}: {
+  tab?: ActiveTabInfo;
+  bridge: BridgeStatus;
+  run: (task: () => Promise<void>, success?: string) => Promise<void>;
+  busy: boolean;
+}) {
+  const shareTransform = async () => {
+    if (!tab) throw new Error('请先选择需要使用的页面');
+    if (bridge.state !== 'connected') await request('bridge.connect');
+  };
+
+  return <div className="section-view gateway-view">
     <RecordingWorkspace
       tab={tab}
       busy={busy}
       run={run}
-      gatewayShared={transformShared}
+      gatewayShared={bridge.state === 'connected'}
       onShareGateway={shareTransform}
+      initialMode="gateway"
     />
   </div>;
 }
diff --git a/src/features/authorization-testing/ui/AuthorizationTestingWorkspace.tsx b/src/features/authorization-testing/ui/AuthorizationTestingWorkspace.tsx
index a884422..755ef61 100644
--- a/src/features/authorization-testing/ui/AuthorizationTestingWorkspace.tsx
+++ b/src/features/authorization-testing/ui/AuthorizationTestingWorkspace.tsx
@@ -445,6 +445,14 @@ export function AuthorizationTestingWorkspace({
     }
   }, 'A/B 身份已验证，双方请求捕获已开始');
 
+  const openCrossBrowserWorkspace = () => run(async () => {
+    if (!activeTab) throw new Error('请先选择需要测试的页面');
+    if (!bridge.capabilities?.includes('yakit.browser_authorization.open')) {
+      throw new Error('当前 Yak 引擎不支持打开跨浏览器工作区');
+    }
+    await request('authorization.yakit.open', { tabId: activeTab.id, mode });
+  }, '已在 Yakit 打开跨浏览器越权测试，并带入当前页面');
+
   const refreshWorkspaceDocuments = async (): Promise<BrowserAuthorizationWorkspace> => {
     if (!workspace || !leftTab || !rightTab) throw new Error('请先建立 A/B 工作区');
     const nextState = await request('grant.refresh');
@@ -722,6 +730,21 @@ export function AuthorizationTestingWorkspace({
       </div>)}
     </div>
 
+    {!workspace && <section className="authorization-cross-browser">
+      <span><UserRoundPlus size={18} /></span>
+      <div>
+        <strong>使用 YTray 的多个浏览器实例</strong>
+        <small>把当前页面作为资源身份带入 Yakit，再选择在线的浏览器 A、B 或 C 作为独立对照账号。</small>
+      </div>
+      <Button
+        variant="ghost"
+        disabled={busy || !activeTab || !bridge.capabilities?.includes('yakit.browser_authorization.open')}
+        onClick={() => void openCrossBrowserWorkspace()}
+      >
+        <ExternalLink size={15} />在 Yakit 选择实例
+      </Button>
+    </section>}
+
     {!workspace ? <section className="authorization-identity-stage">
       <div className="authorization-mode">
         <span>测试类型</span>
diff --git a/src/features/authorization-testing/ui/authorization-testing-workspace.css b/src/features/authorization-testing/ui/authorization-testing-workspace.css
index a4c4c60..0eb08aa 100644
--- a/src/features/authorization-testing/ui/authorization-testing-workspace.css
+++ b/src/features/authorization-testing/ui/authorization-testing-workspace.css
@@ -116,6 +116,44 @@
   color: var(--success);
 }
 
+.authorization-cross-browser {
+  min-height: 64px;
+  padding: 10px 14px;
+  display: grid;
+  grid-template-columns: 34px minmax(0, 1fr) auto;
+  align-items: center;
+  gap: 11px;
+  border: 1px solid color-mix(in srgb, var(--authorization-accent) 24%, var(--border));
+  border-radius: var(--radius-lg);
+  background: color-mix(in srgb, var(--authorization-accent) 5%, var(--surface));
+}
+
+.authorization-cross-browser > span {
+  width: 34px;
+  height: 34px;
+  display: grid;
+  place-items: center;
+  border-radius: var(--radius-md);
+  background: color-mix(in srgb, var(--authorization-accent) 12%, var(--surface));
+  color: var(--authorization-accent);
+}
+
+.authorization-cross-browser strong,
+.authorization-cross-browser small {
+  display: block;
+}
+
+.authorization-cross-browser strong {
+  font-size: var(--text-sm);
+}
+
+.authorization-cross-browser small {
+  margin-top: 3px;
+  color: var(--muted);
+  font-size: var(--text-xs);
+  line-height: 1.45;
+}
+
 .authorization-identity-stage,
 .authorization-baseline-stage,
 .authorization-plan-stage {
@@ -1458,6 +1496,15 @@
 }
 
 @media (max-width: 820px) {
+  .authorization-cross-browser {
+    grid-template-columns: 34px minmax(0, 1fr);
+  }
+
+  .authorization-cross-browser > .ui-button {
+    grid-column: 2;
+    justify-self: start;
+  }
+
   .authorization-heading,
   .authorization-prepare-bar,
   .authorization-section-heading {
diff --git a/src/features/browser-recording/RecordingWorkspace.tsx b/src/features/browser-recording/RecordingWorkspace.tsx
index 82c6223..742e4e7 100644
--- a/src/features/browser-recording/RecordingWorkspace.tsx
+++ b/src/features/browser-recording/RecordingWorkspace.tsx
@@ -30,6 +30,7 @@ interface RecordingWorkspaceProps {
   run: RunTask;
   gatewayShared: boolean;
   onShareGateway: () => Promise<void>;
+  initialMode?: 'gateway' | 'recording' | 'deep';
 }
 
 const KIND_LABELS: Record<BrowserRecordingEvent['kind'], string> = {
@@ -182,8 +183,9 @@ export function RecordingWorkspace({
   run,
   gatewayShared,
   onShareGateway,
+  initialMode = 'recording',
 }: RecordingWorkspaceProps) {
-  const [workspaceMode, setWorkspaceMode] = useState<'gateway' | 'recording' | 'deep'>('recording');
+  const [workspaceMode, setWorkspaceMode] = useState<'gateway' | 'recording' | 'deep'>(initialMode);
   const [autoArmRequest, setAutoArmRequest] = useState(0);
   const [autoRecoveryRequest, setAutoRecoveryRequest] = useState(0);
   const [recoveryProfileId, setRecoveryProfileId] = useState('');
diff --git a/src/features/browser-transform/TransformDataFlowView.tsx b/src/features/browser-transform/TransformDataFlowView.tsx
index 1ab9dd2..3ac1be4 100644
--- a/src/features/browser-transform/TransformDataFlowView.tsx
+++ b/src/features/browser-transform/TransformDataFlowView.tsx
@@ -1,8 +1,9 @@
-import type { ComponentType } from 'react';
+import { useEffect, useMemo, useState, type ComponentType } from 'react';
 import {
   ArrowDownToLine,
   Braces,
   CheckCircle2,
+  ChevronDown,
   Code2,
   FileInput,
   KeyRound,
@@ -20,6 +21,12 @@ import type {
   BrowserTransformValueSummary,
 } from '@/types/models';
 
+interface FlowStageItem {
+  id: string;
+  stage: BrowserTransformExplanationStage;
+  members: BrowserTransformExplanationStage[];
+}
+
 const OWNER_LABELS: Record<BrowserTransformExplanationOwner, string> = {
   webfuzzer: 'Web Fuzzer',
   extension: '浏览器扩展',
@@ -69,6 +76,44 @@ function operationLabel(operation: BrowserTransformExplanationStage['operations'
   return details.join(' · ');
 }
 
+function displayStages(
+  stages: BrowserTransformExplanationStage[],
+  direction: BrowserTransformDirectionName,
+): FlowStageItem[] {
+  const items: FlowStageItem[] = [];
+  for (const stage of stages) {
+    const assembly = stage.owner === 'extension' && (stage.kind === 'builtin' || stage.kind === 'output');
+    const previous = items[items.length - 1];
+    if (assembly && previous?.members.every((item) => (
+      item.owner === 'extension' && (item.kind === 'builtin' || item.kind === 'output')
+    ))) {
+      previous.members.push(stage);
+      continue;
+    }
+    items.push({ id: stage.id, stage, members: [stage] });
+  }
+  return items.map((item) => {
+    if (item.members.length === 1) return item;
+    const first = item.members[0];
+    const last = item.members[item.members.length - 1];
+    return {
+      ...item,
+      id: `${first.id}:assembly`,
+      stage: {
+        ...first,
+        id: `${first.id}:assembly`,
+        title: direction === 'request' ? '浏览器扩展组装线上请求' : '浏览器扩展还原逻辑响应',
+        summary: `${item.members.length} 个受限步骤，将中间结果写入最终报文`,
+        nodeIds: item.members.flatMap((member) => member.nodeIds),
+        inputPaths: first.inputPaths,
+        outputPaths: last.outputPaths,
+        operations: item.members.flatMap((member) => member.operations),
+        evidence: item.members.flatMap((member) => member.evidence),
+      },
+    };
+  });
+}
+
 export function TransformDataFlowView({
   profile,
   direction,
@@ -85,6 +130,13 @@ export function TransformDataFlowView({
   const explained = profile.explanation?.directions.find((item) => item.direction === direction);
   const currentExecution = execution?.direction === direction ? execution : undefined;
   const availableDirections = profile.explanation?.directions.map((item) => item.direction) || [];
+  const stages = useMemo(() => displayStages(explained?.stages || [], direction), [direction, explained?.stages]);
+  const defaultOpenStageId = stages.find((item) => item.members.some((member) => member.kind === 'page-call'))?.id || '';
+  const [openStageId, setOpenStageId] = useState('');
+
+  useEffect(() => {
+    setOpenStageId(defaultOpenStageId);
+  }, [defaultOpenStageId, direction, profile.id]);
 
   if (!explained) return <div className="transform-flow-empty">
     <Code2 size={22} />
@@ -97,7 +149,9 @@ export function TransformDataFlowView({
       <div>
         <span className="transform-data-flow__eyebrow">明文网关 · {direction === 'request' ? '请求方向' : '响应方向'}</span>
         <strong>{direction === 'request' ? '明文如何成为线上请求' : '线上响应如何还原为明文'}</strong>
-        <p>{explained.summary}</p>
+        <p>{stages.length === explained.stages.length
+          ? explained.summary
+          : `${explained.stages.length} 个处理步骤已收拢为 ${stages.length} 个主要阶段`}</p>
       </div>
       {availableDirections.length > 1 && <div className="transform-flow-directions" role="tablist" aria-label="数据流方向">
         {availableDirections.map((item) => <button
@@ -119,17 +173,24 @@ export function TransformDataFlowView({
     </div>
 
     <div className="transform-flow-timeline">
-      {explained.stages.map((stage, index) => {
+      {stages.map((item, index) => {
+        const { stage } = item;
         const Icon = STAGE_ICONS[stage.kind];
         const traces = currentExecution?.nodeTrace.filter((trace) => stage.nodeIds.includes(trace.nodeId)) || [];
         const stageDuration = traces.reduce((total, trace) => total + trace.durationMs, 0);
         const hasDetails = Boolean(stage.inputPaths.length || stage.outputPaths.length || stage.operations.length
           || stage.evidence.length || stage.network || stage.source || traces.length);
-        return <details className={`transform-flow-stage is-${stage.owner}`} key={stage.id} open={stage.kind === 'page-call'}>
-          <summary>
+        return <details className={`transform-flow-stage is-${stage.owner}`} key={item.id} open={openStageId === item.id}>
+          <summary
+            aria-expanded={openStageId === item.id}
+            onClick={(event) => {
+              event.preventDefault();
+              if (hasDetails) setOpenStageId((current) => current === item.id ? '' : item.id);
+            }}
+          >
             <span className="transform-flow-stage__rail">
               <i><Icon size={15} /></i>
-              {index < explained.stages.length - 1 && <b />}
+              {index < stages.length - 1 && <b />}
             </span>
             <span className="transform-flow-stage__main">
               <span className="transform-flow-stage__meta"><em>{OWNER_LABELS[stage.owner]}</em><i className={`is-${stage.proof}`}>{proofLabel(stage)}</i></span>
@@ -137,16 +198,25 @@ export function TransformDataFlowView({
               <small>{stage.summary}</small>
             </span>
             <span className="transform-flow-stage__status">
-              {traces.length ? <><CheckCircle2 size={14} /><time>{stageDuration.toFixed(1)} ms</time></> : hasDetails ? <span>详情</span> : null}
+              {traces.length ? <><CheckCircle2 size={14} /><time>{stageDuration.toFixed(1)} ms</time></> : null}
+              {hasDetails && <ChevronDown className="transform-flow-stage__chevron" size={14} />}
             </span>
           </summary>
           {hasDetails && <div className="transform-flow-stage__details">
+            {item.members.length > 1 && <div className="transform-flow-steps">
+              <span>阶段内操作</span>
+              <ol>{item.members.map((member, memberIndex) => <li key={member.id}>
+                <i>{memberIndex + 1}</i>
+                <span><strong>{member.title}</strong><small>{member.operations.map(operationLabel).join(' · ') || member.summary}</small></span>
+                <code>{[member.inputPaths.join('、'), member.outputPaths.join('、')].filter(Boolean).join(' → ')}</code>
+              </li>)}</ol>
+            </div>}
             {stage.network && <dl className="transform-flow-network">
               <div><dt>网络边界</dt><dd><code>{stage.network.method}</code> {stage.network.route}</dd></div>
               {stage.network.statusCode && <div><dt>录制响应</dt><dd>{stage.network.statusCode}</dd></div>}
             </dl>}
-            {stage.operations.length > 0 && <div className="transform-flow-facts"><span>处理</span><ul>{stage.operations.map((operation, operationIndex) => <li key={`${operation.operation}:${operationIndex}`}><strong>{operationLabel(operation)}</strong>{operation.destination && <code>→ {operation.destination}</code>}</li>)}</ul></div>}
-            {(stage.inputPaths.length > 0 || stage.outputPaths.length > 0) && <div className="transform-flow-paths">
+            {item.members.length === 1 && stage.operations.length > 0 && <div className="transform-flow-facts"><span>处理逻辑</span><ul>{stage.operations.map((operation, operationIndex) => <li key={`${operation.operation}:${operationIndex}`}><strong>{operationLabel(operation)}</strong>{operation.destination && <code>→ {operation.destination}</code>}</li>)}</ul></div>}
+            {item.members.length === 1 && (stage.inputPaths.length > 0 || stage.outputPaths.length > 0) && <div className="transform-flow-paths">
               {stage.inputPaths.length > 0 && <div><span>输入</span><p>{stage.inputPaths.map((path) => <code key={path}>{path}</code>)}</p></div>}
               {stage.outputPaths.length > 0 && <div><span>输出</span><p>{stage.outputPaths.map((path) => <code key={path}>{path}</code>)}</p></div>}
             </div>}
diff --git a/src/features/browser-transform/browser-transform-workspace.css b/src/features/browser-transform/browser-transform-workspace.css
index 4088b9c..d3bb33a 100644
--- a/src/features/browser-transform/browser-transform-workspace.css
+++ b/src/features/browser-transform/browser-transform-workspace.css
@@ -255,24 +255,28 @@
 .transform-flow-stage.is-extension { --owner-color: var(--primary); }
 .transform-flow-stage.is-page { --owner-color: #2563eb; }
 .transform-flow-stage.is-yak { --owner-color: #6b7280; }
-.transform-flow-stage > summary { min-width: 0; min-height: 92px; display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 11px; list-style: none; cursor: pointer; }
+.transform-flow-stage > summary { min-width: 0; min-height: 78px; display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 11px; border-radius: var(--radius-md); list-style: none; cursor: pointer; transition: background-color .14s ease, box-shadow .14s ease; }
 .transform-flow-stage > summary::-webkit-details-marker { display: none; }
-.transform-flow-stage__rail { min-height: 92px; display: grid; grid-template-rows: 30px minmax(0, 1fr); justify-items: center; padding-top: 16px; }
+.transform-flow-stage > summary:hover { background: color-mix(in srgb, var(--owner-color) 4%, transparent); }
+.transform-flow-stage[open] > summary { background: color-mix(in srgb, var(--owner-color) 7%, var(--surface)); box-shadow: inset 3px 0 0 var(--owner-color); }
+.transform-flow-stage__rail { min-height: 78px; display: grid; grid-template-rows: 30px minmax(0, 1fr); justify-items: center; padding-top: 13px; }
 .transform-flow-stage__rail > i { width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid color-mix(in srgb, var(--owner-color) 30%, var(--border)); border-radius: 50%; background: color-mix(in srgb, var(--owner-color) 8%, var(--surface)); color: var(--owner-color); font-style: normal; }
 .transform-flow-stage__rail > b { width: 1px; min-height: 38px; background: color-mix(in srgb, var(--owner-color) 28%, var(--border)); }
-.transform-flow-stage__main { min-width: 0; padding: 15px 0 13px; border-bottom: 1px solid var(--border); }
+.transform-flow-stage__main { min-width: 0; padding: 12px 0 11px; border-bottom: 1px solid var(--border); }
 .transform-flow-stage__meta { display: flex; align-items: center; gap: 7px; }
-.transform-flow-stage__meta > em { color: var(--owner-color); font-size: 10px; font-style: normal; font-weight: 700; }
-.transform-flow-stage__meta > i { padding: 1px 5px; border-radius: 999px; background: var(--surface-subtle); color: var(--muted); font-size: 9px; font-style: normal; }
+.transform-flow-stage__meta > em { color: var(--owner-color); font-size: var(--text-xs); font-style: normal; font-weight: 700; }
+.transform-flow-stage__meta > i { padding: 1px 5px; border-radius: 999px; background: var(--surface-subtle); color: var(--muted); font-size: var(--text-xs); font-style: normal; }
 .transform-flow-stage__meta > i.is-observed { background: var(--success-soft); color: var(--success); }
 .transform-flow-stage__meta > i.is-supported { background: var(--warning-soft); color: var(--warning); }
 .transform-flow-stage__main > strong { display: block; margin-top: 5px; font-size: var(--text-sm); }
 .transform-flow-stage__main > small { display: block; margin-top: 3px; color: var(--muted); font-size: var(--text-xs); line-height: 1.45; }
-.transform-flow-stage__status { min-width: 54px; padding: 15px 0 0 8px; display: flex; align-items: flex-start; justify-content: flex-end; gap: 4px; color: var(--muted); font-size: 10px; }
+.transform-flow-stage__status { min-width: 70px; padding: 13px 10px 0 8px; display: flex; align-items: center; justify-content: flex-end; gap: 5px; color: var(--muted); font-size: var(--text-xs); }
 .transform-flow-stage__status > svg { color: var(--success); }
 .transform-flow-stage__status time { font-variant-numeric: tabular-nums; }
 .transform-flow-stage[open] .transform-flow-stage__status > span { color: var(--foreground); }
-.transform-flow-stage__details { margin: -6px 0 10px 45px; padding: 0 0 14px; display: grid; gap: 10px; border-bottom: 1px solid var(--border); }
+.transform-flow-stage__status > .transform-flow-stage__chevron { color: var(--muted); transition: transform .16s ease; }
+.transform-flow-stage[open] .transform-flow-stage__chevron { transform: rotate(180deg); }
+.transform-flow-stage__details { margin: 4px 10px 14px 45px; padding: 13px 14px; display: grid; gap: 11px; border: 1px solid color-mix(in srgb, var(--owner-color) 16%, var(--border)); border-radius: var(--radius-md); background: var(--surface); box-shadow: 0 4px 14px rgb(15 23 42 / 4%); }
 .transform-flow-network { margin: 0; padding: 8px 10px; display: grid; gap: 5px; background: var(--surface-subtle); }
 .transform-flow-network > div { min-width: 0; display: grid; grid-template-columns: 78px minmax(0, 1fr); gap: 8px; font-size: var(--text-xs); }
 .transform-flow-network dt { color: var(--muted); }
@@ -305,6 +309,18 @@
 .transform-flow-runtime li strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .transform-flow-runtime li code { color: var(--muted); }
 .transform-flow-runtime li time { color: var(--success); text-align: right; font-variant-numeric: tabular-nums; }
+.transform-flow-steps { min-width: 0; display: grid; grid-template-columns: 78px minmax(0, 1fr); gap: 8px; }
+.transform-flow-steps > span { color: var(--muted); font-size: var(--text-xs); font-weight: 650; }
+.transform-flow-steps ol { min-width: 0; margin: 0; padding: 0; display: grid; gap: 2px; list-style: none; }
+.transform-flow-steps li { min-width: 0; min-height: 42px; padding: 6px 8px; display: grid; grid-template-columns: 20px minmax(130px, .8fr) minmax(160px, 1fr); align-items: center; gap: 8px; border-bottom: 1px solid var(--border); }
+.transform-flow-steps li:last-child { border-bottom: 0; }
+.transform-flow-steps li > i { width: 20px; height: 20px; display: grid; place-items: center; border-radius: 50%; background: color-mix(in srgb, var(--owner-color) 9%, var(--surface)); color: var(--owner-color); font-size: var(--text-xs); font-style: normal; font-weight: 700; }
+.transform-flow-steps li > span { min-width: 0; }
+.transform-flow-steps li strong,
+.transform-flow-steps li small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.transform-flow-steps li strong { font-size: var(--text-xs); }
+.transform-flow-steps li small { margin-top: 2px; color: var(--muted); font-size: var(--text-xs); }
+.transform-flow-steps li > code { min-width: 0; overflow: hidden; color: var(--muted-strong); font-size: var(--text-xs); text-overflow: ellipsis; white-space: nowrap; }
 .transform-flow-changes { margin: 14px 0 0 45px; border-top: 2px solid var(--foreground); }
 .transform-flow-changes > header { min-height: 54px; display: flex; align-items: center; justify-content: space-between; gap: 10px; border-bottom: 1px solid var(--border); }
 .transform-flow-changes > header strong,
@@ -438,6 +454,9 @@
   .transform-data-flow { padding-inline: 12px; }
   .transform-data-flow__head { flex-direction: column; }
   .transform-flow-paths { grid-template-columns: minmax(0, 1fr); }
+  .transform-flow-steps { grid-template-columns: minmax(0, 1fr); }
+  .transform-flow-steps li { grid-template-columns: 20px minmax(0, 1fr); }
+  .transform-flow-steps li > code { grid-column: 2; }
   .transform-flow-stage__details,
   .transform-flow-changes { margin-left: 34px; }
   .transform-flow-empty { grid-template-columns: 30px minmax(0, 1fr); }
diff --git a/src/protocol/extension.test.ts b/src/protocol/extension.test.ts
index 1d287d6..24a6049 100644
--- a/src/protocol/extension.test.ts
+++ b/src/protocol/extension.test.ts
@@ -99,6 +99,10 @@ describe('extension request schemas', () => {
       action: 'authorization.yakit.open',
       payload: { workspaceId: 'authorization-workspace-1' },
     }).action).toBe('authorization.yakit.open');
+    expect(parseExtensionRequest({
+      action: 'authorization.yakit.open',
+      payload: { tabId: 12, mode: 'horizontal' },
+    }).payload).toEqual({ tabId: 12, mode: 'horizontal' });
     expect(parseExtensionRequest({
       action: 'network.capture.start',
       payload: {
diff --git a/src/protocol/extension.ts b/src/protocol/extension.ts
index 09152ee..b765abf 100644
--- a/src/protocol/extension.ts
+++ b/src/protocol/extension.ts
@@ -302,7 +302,13 @@ const payloadSchemas = {
     payload: v.record(v.string(), v.unknown()),
     timeoutMs: v.optional(v.pipe(v.number(), v.safeInteger(), v.minValue(5_000), v.maxValue(120_000))),
   }),
-  'authorization.yakit.open': v.strictObject({ workspaceId: id }),
+  'authorization.yakit.open': v.union([
+    v.strictObject({ workspaceId: id }),
+    v.strictObject({
+      tabId,
+      mode: v.optional(v.picklist(['horizontal', 'vertical'])),
+    }),
+  ]),
   'proxy.save': proxyProfile,
   'proxy.delete': v.strictObject({ id }),
   'proxy.switch': v.strictObject({ id }),
diff --git a/src/types/messages.ts b/src/types/messages.ts
index 62083e4..6ac1053 100644
--- a/src/types/messages.ts
+++ b/src/types/messages.ts
@@ -97,8 +97,8 @@ export interface ExtensionRequestMap {
     output: unknown;
   };
   'authorization.yakit.open': {
-    input: { workspaceId: string };
-    output: { workspaceId: string; opened: boolean };
+    input: { workspaceId: string } | { tabId: number; mode?: 'horizontal' | 'vertical' };
+    output: { workspaceId?: string; tabId?: number; opened: boolean };
   };
   'proxy.save': { input: ProxyProfile; output: ExtensionState };
   'proxy.delete': { input: { id: string }; output: ExtensionState };