diff --git a/src/App.tsx b/src/App.tsx
index fe09a81..ee936e4 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -3,6 +3,7 @@ import { auth } from './auth'
 import { api } from './api'
 import { LoginPage, ChangePasswordGate } from './components/LoginPage'
 import { AdminUsersModal, ChangePasswordModal } from './components/AdminUsersModal'
+import { Icon } from './icons'
 import { store, useStore } from './store'
 import { TaskSidebar } from './components/TaskSidebar'
 import { Conversation } from './components/Conversation'
@@ -111,12 +112,12 @@ export function App() {
       ) : (
         <div className="left-nav collapsed" style={{ width: 52 }}>
           <div className="icon-only">
-            <button title="展开侧栏（⌘B）" onClick={store.toggleLeft}>☰</button>
-            <button title="新建任务（⌘N）" onClick={() => store.createTask()}>✚</button>
-            <button title="收件箱" onClick={() => store.openInbox()}>◍
+            <button title="展开侧栏（⌘B）" onClick={store.toggleLeft}><Icon name="panel-left" /></button>
+            <button title="新建任务（⌘N）" onClick={() => store.createTask()}><Icon name="plus" /></button>
+            <button title="收件箱" onClick={() => store.openInbox()}><Icon name="inbox" />
               {pendingBadge > 0 && <span className="rail-badge" data-testid="rail-badge">{pendingBadge}</span>}
             </button>
-            <button title="设置" onClick={() => store.openSettings(true)}>⚙</button>
+            <button title="设置" onClick={() => store.openSettings(true)}><Icon name="settings" /></button>
           </div>
         </div>
       )}
diff --git a/src/components/AdminUsersModal.tsx b/src/components/AdminUsersModal.tsx
index a176a48..3064fa2 100644
--- a/src/components/AdminUsersModal.tsx
+++ b/src/components/AdminUsersModal.tsx
@@ -4,6 +4,7 @@
 import { useEffect, useState } from 'react'
 import { api } from '../api'
 import { store, useStore } from '../store'
+import { Icon } from '../icons'
 import { randomPassword } from '../passwords'
 
 interface AdminUserRow { owner: string; name: string; isAdmin: boolean; mustChangePassword: boolean; hasPassword: boolean; passwordSetAt?: string; createdAt: string }
@@ -15,7 +16,7 @@ function Shell({ title, onClose, children }: { title: string; onClose: () => voi
         <div className="modal-header">
           <b>{title}</b>
           <span className="spacer" />
-          <button className="ad-mini" onClick={onClose} aria-label="关闭">✕</button>
+          <button className="ad-mini" onClick={onClose} aria-label="关闭"><Icon name="x" size={13} /></button>
         </div>
         <div className="ad-body">{children}</div>
       </div>
@@ -83,8 +84,8 @@ export function AdminUsersModal({ onClose }: { onClose: () => void }) {
           <p className="ad-hint">创建后该用户首次登录必须修改此初始密码。</p>
         </div>
       )}
-      {notice && <div className="ad-notice">{notice}</div>}
-      {err && <div className="lg-err">{err}</div>}
+      {notice && <div className="ad-notice"><Icon name="check" size={14} />{notice}</div>}
+      {err && <div className="lg-err"><Icon name="alert" size={14} />{err}</div>}
       {resetFor ? (
         <div className="ad-reset">
           <span>重置 <b>{resetFor}</b> 的密码：</span>
@@ -152,7 +153,7 @@ export function ChangePasswordModal({ onClose }: { onClose: () => void }) {
           <input className="lg-input" type="password" value={next} onChange={e => setNext(e.target.value)} />
           <label className="lg-label">确认新密码</label>
           <input className="lg-input" type="password" value={confirm} onChange={e => setConfirm(e.target.value)} />
-          {err && <div className="lg-err">{err}</div>}
+          {err && <div className="lg-err"><Icon name="alert" size={14} />{err}</div>}
           <button className="lg-submit" disabled={busy || !current || !next || !confirm} onClick={submit}>{busy ? '提交中…' : '更新密码'}</button>
         </div>
       )}
diff --git a/src/components/Conversation.tsx b/src/components/Conversation.tsx
index 8b25a26..ec356dd 100644
--- a/src/components/Conversation.tsx
+++ b/src/components/Conversation.tsx
@@ -1,4 +1,5 @@
 // 中栏：消息流（Part 渲染器注册表）+ 流式渲染 + 过程折叠 + HITL 卡片 + 输入区（4.4）。
+import { Icon } from '../icons'
 import { useEffect, useMemo, useRef, useState } from 'react'
 import { marked } from 'marked'
 import { api } from '../api'
@@ -38,7 +39,7 @@ function PartView({ part, live }: { part: Part; live?: boolean | null }) {
         if (art) store.viewArtifact(art)
       }}>📄 {part.artifact?.name}</span>
     case 'hitl':
-      return <div className="tool-chip">❓ {part.hitl?.question} → {part.hitl?.answer || '…'}</div>
+      return <div className="tool-chip"><Icon name="message" size={12} /> {part.hitl?.question} → {part.hitl?.answer || '…'}</div>
     case 'plan':
       return null // 计划在右栏 Plan 标签呈现
     case 'card': {
@@ -71,7 +72,7 @@ function ProcessCollapse({ parts }: { parts: Part[] }) {
   return (
     <details className="process-collapse">
       <summary>
-        <span>⚙ 处程输出</span>
+        <span>过程输出</span>
         <span>{hasThinking ? '含思考' : ''}{toolCount > 0 ? ` · ${toolCount} 次工具调用` : ''}（点击展开）</span>
       </summary>
       <div className="body">
@@ -167,7 +168,7 @@ function HITLCardView({ card }: { card: HITLCard }) {
   }
   return (
     <div className="hitl-card">
-      <div className="hitl-q">❓ {card.question}</div>
+      <div className="hitl-q"><Icon name="check" size={15} />{card.question}</div>
       {card.choices && (
         <div className="hitl-choices">
           {card.choices.map(c => (
@@ -270,7 +271,7 @@ export function Conversation() {
           {profiles.map(p => <option key={p.id} value={p.id}>{p.name}</option>)}
         </select>
         <span title={connected ? '事件流已连接' : '事件流重连中'} className={`conn-dot ${connected ? 'on' : 'off'}`} />
-        {active && <button className="btn ghost" onClick={() => store.cancelActive()}>■ 停止</button>}
+        {active && <button className="btn ghost" onClick={() => store.cancelActive()}>停止</button>}
       </div>
 
       <div className="chat-body" ref={bodyRef}
@@ -306,7 +307,8 @@ export function Conversation() {
           <AssistantMessage key={`live-${live.runId}`} msg={liveToMessage(live)} live={live} />}
         {activeHitl.map(c => <HITLCardView key={c.id} card={c} />)}
         {messages.length === 0 && <div className="empty-state">
-          <div>发送消息开始对话</div>
+          <span className="es-mark"><Icon name="sparkles" size={22} /></span>
+        <div>发送消息开始对话</div>
           <div style={{ fontSize: 12, color: 'var(--text-faint)' }}>mock 模式演示指令：#hitl · #agents · #doc · #error　·　命令：/help</div>
         </div>}
       </div>
@@ -314,15 +316,15 @@ export function Conversation() {
       <div className="input-bar">
         {attachmentNames.length > 0 && (
           <div className="attachments">
-            {attachmentNames.map((n, i) => <span className="attach-chip" key={i}>📎 {n}
-              <span style={{ cursor: 'pointer' }} onClick={() => { setAttachmentIds(a => a.filter((_, j) => j !== i)); setAttachmentNames(a => a.filter((_, j) => j !== i)) }}>✕</span>
+            {attachmentNames.map((n, i) => <span className="attach-chip" key={i}><Icon name='paperclip' size={12} /> {n}
+              <span style={{ cursor: 'pointer', display: 'inline-flex' }} onClick={() => { setAttachmentIds(a => a.filter((_, j) => j !== i)); setAttachmentNames(a => a.filter((_, j) => j !== i)) }}><Icon name="x" size={11} /></span>
             </span>)}
           </div>
         )}
         {text.startsWith('/') && <CommandMenu text={text} onPick={c => setText(c)} />}
         <div className="input-row">
           <label className="icon-btn" title="上传附件（文档解析后注入上下文）">
-            📎<input type="file" multiple style={{ display: 'none' }} onChange={async e => {
+            <Icon name="paperclip" size={16} /><input type="file" multiple style={{ display: 'none' }} onChange={async e => {
               for (const f of Array.from(e.target.files ?? [])) {
                 const id = await store.uploadAttachment(f)
                 if (id) { setAttachmentIds(a => [...a, id]); setAttachmentNames(a => [...a, f.name]) }
diff --git a/src/components/LoginPage.tsx b/src/components/LoginPage.tsx
index d60902b..acc5450 100644
--- a/src/components/LoginPage.tsx
+++ b/src/components/LoginPage.tsx
@@ -4,10 +4,28 @@
 import { useState } from 'react'
 import { auth } from '../auth'
 import { api } from '../api'
+import { Icon, BrandMark } from '../icons'
 
 function Err({ msg }: { msg: string }) {
   if (!msg) return null
-  return <div className="lg-err" role="alert">{msg}</div>
+  return <div className="lg-err" role="alert"><Icon name="alert" size={14} />{msg}</div>
+}
+
+/** 宽屏右侧品牌面板（叙事 + 特性清单）；窄屏隐藏。 */
+function BrandPanel() {
+  return (
+    <aside className="lg-panel">
+      <h2>把研发记忆，<br />变成组织的第二大脑</h2>
+      <p>文档、决策与知识的沉淀、检索与生成——面向团队的自托管智能体工作台。</p>
+      <ul>
+        <li><Icon name="message" size={15} />项目化多任务工作区，收件箱驱动待办</li>
+        <li><Icon name="shield" size={15} />管理员发放账号，密码策略与密钥分级</li>
+        <li><Icon name="search" size={15} />知识库混合检索（全文 + 向量）</li>
+        <li><Icon name="package" size={15} />文档生成流水线与工件管理</li>
+      </ul>
+      <div className="lg-foot"><span>自托管 · 多租户</span><span>数据不出域</span></div>
+    </aside>
+  )
 }
 
 /** 登录页：认证开启（PG 档/–-auth on）时的唯一入口。 */
@@ -49,8 +67,10 @@ export function LoginPage({ onAuthed, onMustChange }: { onAuthed: () => void; on
 
   return (
     <div className="lg-wrap">
+      <BrandPanel />
+      <div className="lg-formside">
       <form className="lg-card" onSubmit={e => { e.preventDefault(); tab === 'password' ? submitPassword() : submitKey() }}>
-        <div className="lg-brand"><span className="lg-logo">A</span>Agent-System</div>
+        <div className="lg-brand"><BrandMark size={26} />Agent-System</div>
         <h2 className="lg-title">登录</h2>
         <p className="lg-sub">账号由管理员发放；首次登录需修改初始密码</p>
         <div className="lg-tabs" role="tablist">
@@ -76,6 +96,7 @@ export function LoginPage({ onAuthed, onMustChange }: { onAuthed: () => void; on
           </>
         )}
       </form>
+      </div>
     </div>
   )
 }
@@ -103,8 +124,10 @@ export function ChangePasswordGate({ owner, onDone, onCancel }: { owner: string;
 
   return (
     <div className="lg-wrap">
+      <BrandPanel />
+      <div className="lg-formside">
       <form className="lg-card" onSubmit={e => { e.preventDefault(); submit() }}>
-        <div className="lg-brand"><span className="lg-logo">A</span>Agent-System</div>
+        <div className="lg-brand"><BrandMark size={26} />Agent-System</div>
         <h2 className="lg-title">修改密码</h2>
         <p className="lg-sub">账号 <b>{owner}</b> 使用初始/重置密码首次登录，须设置新密码后继续</p>
         <label className="lg-label">当前密码（初始/重置密码）</label>
@@ -117,6 +140,7 @@ export function ChangePasswordGate({ owner, onDone, onCancel }: { owner: string;
         <button className="lg-submit" type="submit" disabled={busy || !current || !next || !confirm}>{busy ? '提交中…' : '设置新密码并进入'}</button>
         {onCancel && <button type="button" className="lg-cancel" onClick={onCancel}>返回登录</button>}
       </form>
+      </div>
     </div>
   )
 }
diff --git a/src/components/TaskSidebar.tsx b/src/components/TaskSidebar.tsx
index df74292..bc61809 100644
--- a/src/components/TaskSidebar.tsx
+++ b/src/components/TaskSidebar.tsx
@@ -5,6 +5,7 @@ import { useEffect, useRef, useState } from 'react'
 import { store, useStore } from '../store'
 import { auth } from '../auth'
 import { api } from '../api'
+import { Icon, BrandMark, workspaceIcon } from '../icons'
 import type { Conversation } from '../contracts'
 import { workspaceEntries } from './Workspaces'
 import { groupByProject, groupByTimeline, relativeTime, filterTasks, type TaskOrg } from '../tasklist'
@@ -35,8 +36,10 @@ function Menu({ anchor, onClose, children }: { anchor: HTMLElement | null; onClo
   return <div ref={ref} className="tsb-menu" onClick={e => e.stopPropagation()}>{children}</div>
 }
 
-function MenuItem({ onClick, danger, children }: { onClick: () => void; danger?: boolean; children: React.ReactNode }) {
-  return <button className={`tsb-mi ${danger ? 'danger' : ''}`} onClick={onClick}>{children}</button>
+function MenuItem({ onClick, danger, icon, children }: { onClick: () => void; danger?: boolean; icon?: Parameters<typeof Icon>[0]['name']; children: React.ReactNode }) {
+  return <button className={`tsb-mi ${danger ? 'danger' : ''}`} onClick={onClick}>
+    {icon && <Icon name={icon} size={15} />}{children}
+  </button>
 }
 
 export function TaskSidebar() {
@@ -86,9 +89,9 @@ export function TaskSidebar() {
 
   const rowActions = (t: Conversation) => (
     <span className="tsb-row-acts">
-      <button className="tsb-row-act" title="置顶 / 取消置顶" onClick={e => { e.stopPropagation(); store.pinTask(t.id, !t.pinned) }}>📌</button>
+      <button className="tsb-row-act" title="置顶 / 取消置顶" onClick={e => { e.stopPropagation(); store.pinTask(t.id, !t.pinned) }}><Icon name="pin" size={13} /></button>
       <button className="tsb-row-act" title={t.archived ? '恢复' : '归档'} onClick={e => { e.stopPropagation(); store.archiveTask(t.id, !t.archived) }}>
-        {t.archived ? '↩' : '🗄'}
+        <Icon name={t.archived ? 'undo' : 'archive'} size={13} />
       </button>
     </span>
   )
@@ -107,22 +110,25 @@ export function TaskSidebar() {
   return (
     <>
       <div className="tsb-brand">
-        <span className="tsb-logo">A</span>
+        <BrandMark size={24} />
         <span className="tsb-name">Agent-System</span>
         <span style={{ flex: 1 }} />
-        <button className="tsb-iconbtn" title="收起侧栏（⌘B）" onClick={store.toggleLeft}>⇤</button>
+        <button className="tsb-iconbtn" title="收起侧栏（⌘B）" onClick={store.toggleLeft}><Icon name="panel-left" /></button>
       </div>
 
       {/* 单一主创建入口（P6）：新建任务 + 次级菜单（新建项目/指定项目新建） */}
       <div className="tsb-actions">
         <div className="tsb-newtask">
           <button className="tsb-newtask-main" title="在当前项目新建任务（⌘N）" onClick={() => store.createTask()}>
-            ＋ 新建任务{currentProject ? <span className="tsb-newtask-proj">{currentProject.name}</span> : null}
+            <Icon name="plus" size={15} />新建任务{currentProject ? <span className="tsb-newtask-proj">{currentProject.name}</span> : null}
           </button>
           <button className="tsb-newtask-caret" title="更多创建选项"
-            onClick={e => { const el = e.currentTarget; setMenu(m => m?.kind === 'new' ? null : { kind: 'new', anchor: el }) }}>▾</button>
+            onClick={e => { const el = e.currentTarget; setMenu(m => m?.kind === 'new' ? null : { kind: 'new', anchor: el }) }}><Icon name="chevron-down" size={14} /></button>
+        </div>
+        <div className="tsb-search">
+          <Icon name="search" size={14} />
+          <input placeholder="搜索任务…" value={q} onChange={e => setQ(e.target.value)} />
         </div>
-        <input className="tsb-search" placeholder="搜索任务…" value={q} onChange={e => setQ(e.target.value)} />
       </div>
 
       {/* 组织视图切换（P8）+ 过滤 */}
@@ -132,7 +138,7 @@ export function TaskSidebar() {
           <button className={`tsb-pill ${org === 'timeline' ? 'on' : ''}`} onClick={() => setOrg('timeline')}>时间线</button>
         </div>
         <button className={`tsb-iconbtn ${showArchived ? 'active' : ''}`} title={showArchived ? '隐藏归档' : '查看归档'}
-          onClick={() => { store.setUI({ showArchived: !showArchived }); store.refreshTasks(!showArchived) }}>🗄</button>
+          onClick={() => { store.setUI({ showArchived: !showArchived }); store.refreshTasks(!showArchived) }}><Icon name="archive" size={15} /></button>
       </div>
 
       <div className="tsb-scroll">
@@ -166,11 +172,11 @@ export function TaskSidebar() {
           <div key={g.key} className={`tsb-group ${collapsed[g.key] ? 'closed' : ''}`}>
             {org === 'project' ? (
               <div className="tsb-group-head" onClick={() => tglGroup(g.key)}>
-                <span className="tsb-chev">▶</span>
+                <span className="tsb-chev"><Icon name="chevron-right" size={13} /></span>
                 <span className="tsb-group-name" title={g.label}>{g.label}</span>
                 <span className="tsb-group-cnt">{g.tasks.length}</span>
                 <span style={{ flex: 1 }} />
-                <button className="tsb-group-add" title="在此项目新建任务" onClick={e => { e.stopPropagation(); store.createTask(g.projectId) }}>＋</button>
+                <button className="tsb-group-add" title="在此项目新建任务" onClick={e => { e.stopPropagation(); store.createTask(g.projectId) }}><Icon name="plus" size={13} /></button>
               </div>
             ) : (
               <div className="tsb-seclabel">{g.label}</div>
@@ -183,10 +189,10 @@ export function TaskSidebar() {
       {/* 工作区快捷图标条（D25：与 ⌘1–9 同一清单） */}
       <div className="tsb-wsstrip">
         {workspaceEntries().map(e => (
-          <button key={e.key} title={`${e.title}（${e.shortcut}）`} onClick={() => store.openWorkspace(e.key)}>{e.icon}</button>
+          <button key={e.key} title={`${e.title}（${e.shortcut}）`} onClick={() => store.openWorkspace(e.key)}><Icon name={workspaceIcon(e.icon)} size={15} /></button>
         ))}
         <span style={{ flex: 1 }} />
-        <button title={theme === 'dark' ? '切换浅色' : '切换深色'} onClick={() => store.setUI({ theme: theme === 'dark' ? 'light' : 'dark' })}>{theme === 'dark' ? '☀' : '☾'}</button>
+        <button title={theme === 'dark' ? '切换浅色' : '切换深色'} onClick={() => store.setUI({ theme: theme === 'dark' ? 'light' : 'dark' })}><Icon name={theme === 'dark' ? 'sun' : 'moon'} size={15} /></button>
       </div>
 
       {/* 账户区（P7）：身份常驻；阶段 1 = API key 即身份（user 即租户 owner） */}
@@ -197,17 +203,17 @@ export function TaskSidebar() {
             <span className="tsb-user-name">{me?.name || me?.owner || '未连接'}</span>
             <span className="tsb-user-sub">{me ? (me.auth ? (me.isAdmin ? '管理员 · 已认证' : '已认证') : '本地模式 · 默认租户') : '…'}</span>
           </span>
-          <span className="tsb-user-chev">▿</span>
+          <span className="tsb-user-chev"><Icon name="chevron-down" size={13} /></span>
         </button>
-        <button className="tsb-iconbtn" title="设置" onClick={() => store.openSettings(true)}>⚙</button>
-        {pendingBadge > 0 && <button className="tsb-iconbtn active" title={`待办 ${pendingBadge}`} onClick={() => store.openInbox()}>◍ {pendingBadge}</button>}
+        <button className="tsb-iconbtn" title="设置" onClick={() => store.openSettings(true)}><Icon name="settings" size={15} /></button>
+        {pendingBadge > 0 && <button className="tsb-iconbtn active" title={`待办 ${pendingBadge}`} onClick={() => store.openInbox()}><Icon name="inbox" size={15} />{pendingBadge}</button>}
       </div>
 
       {/* 弹出菜单们 */}
       <Menu anchor={menu?.kind === 'new' ? menu.anchor : null} onClose={() => setMenu(null)}>
-        <MenuItem onClick={() => { store.createTask(); setMenu(null) }}>新建任务 · 当前项目<kbd>⌘N</kbd></MenuItem>
+        <MenuItem icon="plus" onClick={() => { store.createTask(); setMenu(null) }}>新建任务 · 当前项目<kbd>⌘N</kbd></MenuItem>
         <div className="tsb-menu-div" />
-        <MenuItem onClick={() => { setCreatingProject(true); setMenu(null) }}>新建项目…</MenuItem>
+        <MenuItem icon="folder" onClick={() => { setCreatingProject(true); setMenu(null) }}>新建项目…</MenuItem>
         {projects.filter(p => p.id !== currentProjectId).slice(0, 6).map(p => (
           <MenuItem key={p.id} onClick={() => { store.createTask(p.id); setMenu(null) }}>在「{p.name}」新建任务</MenuItem>
         ))}
@@ -215,10 +221,10 @@ export function TaskSidebar() {
 
       <Menu anchor={rowMenuAnchor} onClose={() => setMenu(null)}>
         {rowTask && <>
-          <MenuItem onClick={() => { store.pinTask(rowTask.id, !rowTask.pinned); setMenu(null) }}>{rowTask.pinned ? '取消置顶' : '置顶'}</MenuItem>
-          <MenuItem onClick={() => { store.archiveTask(rowTask.id, !rowTask.archived); setMenu(null) }}>{rowTask.archived ? '恢复（移出归档）' : '归档'}</MenuItem>
+          <MenuItem icon="pin" onClick={() => { store.pinTask(rowTask.id, !rowTask.pinned); setMenu(null) }}>{rowTask.pinned ? '取消置顶' : '置顶'}</MenuItem>
+          <MenuItem icon={rowTask.archived ? 'undo' : 'archive'} onClick={() => { store.archiveTask(rowTask.id, !rowTask.archived); setMenu(null) }}>{rowTask.archived ? '恢复（移出归档）' : '归档'}</MenuItem>
           <div className="tsb-menu-div" />
-          <MenuItem onClick={() => { store.setUI({ taskOrg: 'timeline' }); setMenu(null) }}>按时间线查看</MenuItem>
+          <MenuItem icon="clock" onClick={() => { store.setUI({ taskOrg: 'timeline' }); setMenu(null) }}>按时间线查看</MenuItem>
         </>}
       </Menu>
 
@@ -231,13 +237,13 @@ export function TaskSidebar() {
           </span>
         </div>
         <div className="tsb-menu-div" />
-        <MenuItem onClick={() => { store.openSettings(true); setMenu(null) }}>偏好设置</MenuItem>
-        <MenuItem onClick={() => { store.openInbox(); setMenu(null) }}>收件箱{pendingBadge > 0 ? `（待办 ${pendingBadge}）` : ''}</MenuItem>
-        <MenuItem onClick={() => { store.setUI({ changePwOpen: true }); setMenu(null) }}>修改密码…</MenuItem>
-        {me?.isAdmin && <MenuItem onClick={() => { store.setUI({ adminUsersOpen: true }); setMenu(null) }}>用户管理…</MenuItem>}
+        <MenuItem icon="settings" onClick={() => { store.openSettings(true); setMenu(null) }}>偏好设置</MenuItem>
+        <MenuItem icon="inbox" onClick={() => { store.openInbox(); setMenu(null) }}>收件箱{pendingBadge > 0 ? `（待办 ${pendingBadge}）` : ''}</MenuItem>
+        <MenuItem icon="key" onClick={() => { store.setUI({ changePwOpen: true }); setMenu(null) }}>修改密码…</MenuItem>
+        {me?.isAdmin && <MenuItem icon="users" onClick={() => { store.setUI({ adminUsersOpen: true }); setMenu(null) }}>用户管理…</MenuItem>}
         {me?.auth && <>
           <div className="tsb-menu-div" />
-          <MenuItem danger onClick={() => { api.logout().catch(() => undefined); auth.logout() }}>退出登录</MenuItem>
+          <MenuItem danger icon="logout" onClick={() => { api.logout().catch(() => undefined); auth.logout() }}>退出登录</MenuItem>
         </>}
       </Menu>
     </>
diff --git a/src/components/Workbench.tsx b/src/components/Workbench.tsx
index 10257f1..cffbf9b 100644
--- a/src/components/Workbench.tsx
+++ b/src/components/Workbench.tsx
@@ -3,6 +3,7 @@
 import { store, useStore } from '../store'
 import type { Run } from '../contracts'
 import { InboxList, pendingCount, type ActivityCard, type DocBridge } from '@ui'
+import { Icon } from '../icons'
 
 // 工件解析/打开注入：渲染器纯展示，doc-ref 词汇经此桥接本仓状态（D29）。
 export const docBridge: DocBridge = {
@@ -23,8 +24,8 @@ export function Workbench() {
     <>
       <div className="tabs">
         <span className="tab active">收件箱{pending > 0 ? ` ${pending}` : ''}</span>
-        <button className="tab tab-action" title="收纳已完成卡（done→关闭；已确认卡留痕不动）" onClick={() => store.tidyCards()}>🧹 收纳</button>
-        <button className="tab" title="收起收件箱" onClick={store.toggleRight}>»</button>
+        <button className="tab tab-action" title="收纳已完成卡（done→关闭；已确认卡留痕不动）" onClick={() => store.tidyCards()}><Icon name="check" size={13} /> 收纳</button>
+        <button className="tab" title="收起收件箱" onClick={store.toggleRight}><Icon name="chevron-right" size={14} /></button>
       </div>
       <div className="tab-body">
         <CurrentTaskCard plan={plan} todos={todos} />
diff --git a/src/icons.tsx b/src/icons.tsx
new file mode 100644
index 0000000..070d027
--- /dev/null
+++ b/src/icons.tsx
@@ -0,0 +1,91 @@
+// 线性图标集（R4 视觉收敛；Lucide 风格：16px 画布、1.6 描边、圆角端点）。
+// 统一替换此前散落各处的 emoji/字符图标（emoji 跨平台渲染不一致且观感廉价）。
+import type { ButtonHTMLAttributes, ReactNode, SVGProps } from 'react'
+
+export type IconName =
+  | 'plus' | 'search' | 'panel-left' | 'inbox' | 'settings' | 'sun' | 'moon'
+  | 'pin' | 'archive' | 'undo' | 'chevron-right' | 'chevron-down'
+  | 'folder' | 'message' | 'package' | 'bot' | 'puzzle' | 'grid'
+  | 'arrow-up' | 'paperclip' | 'more' | 'logout' | 'key' | 'user' | 'users'
+  | 'shield' | 'x' | 'check' | 'alert' | 'send' | 'sparkles' | 'clock' | 'list'
+
+const PATHS: Record<IconName, ReactNode> = {
+  plus: <path d="M8 3.5v9M3.5 8h9" />,
+  search: <><circle cx="7" cy="7" r="4.2" /><path d="m13.2 13.2-2.9-2.9" /></>,
+  'panel-left': <><rect x="1.8" y="2.8" width="12.4" height="10.4" rx="2" /><path d="M6 2.8v10.4" /></>,
+  inbox: <><path d="M1.8 9.4 3.6 3.6a1.6 1.6 0 0 1 1.5-1h5.8a1.6 1.6 0 0 1 1.5 1l1.8 5.8" /><path d="M1.8 9.4h3.3l.9 1.8h4l.9-1.8h3.3v2.9a1.5 1.5 0 0 1-1.5 1.5H3.3a1.5 1.5 0 0 1-1.5-1.5Z" /></>,
+  settings: <><circle cx="8" cy="8" r="2.1" /><path d="M12.9 6.9a1 1 0 0 0 .2 1.1l.1.1a1.2 1.2 0 1 1-1.7 1.7l-.1-.1a1 1 0 0 0-1.7.7v.1a1.2 1.2 0 1 1-2.4 0v-.1a1 1 0 0 0-1.7-.7l-.1.1a1.2 1.2 0 1 1-1.7-1.7l.1-.1a1 1 0 0 0 .2-1.1 1 1 0 0 0-.6-.6H3.5a1.2 1.2 0 1 1 0-2.4h.1a1 1 0 0 0 .7-1.7l-.1-.1a1.2 1.2 0 1 1 1.7-1.7l.1.1a1 1 0 0 0 1.1.2h.1a1 1 0 0 0 .6-.6V1.9a1.2 1.2 0 1 1 2.4 0v.1a1 1 0 0 0 1.7.7l.1-.1a1.2 1.2 0 1 1 1.7 1.7l-.1.1a1 1 0 0 0-.2 1.1v.1a1 1 0 0 0 .6.6h.1a1.2 1.2 0 1 1 0 2.4h-.1a1 1 0 0 0-.6.6Z" /></>,
+  sun: <><circle cx="8" cy="8" r="3" /><path d="M8 1.3v1.4M8 13.3v1.4M1.3 8h1.4M13.3 8h1.4M3.3 3.3l1 1M11.7 11.7l1 1M12.7 3.3l-1 1M4.3 11.7l-1 1" /></>,
+  moon: <path d="M13.4 9.6A6 6 0 0 1 6.4 2.6a6 6 0 1 0 7 7Z" />,
+  pin: <path d="M9.3 1.9 14.1 6.7l-1.4 1.4-.7-.2-2.9 2.9.3 1.6-1.2 1.2L6 10.9l-3.3 3.4-1-1L5 9.9 2.4 7.4l1.2-1.2 1.6.3L8.1 3.6l-.2-.7Z" />,
+  archive: <><rect x="1.8" y="2.5" width="12.4" height="3" rx="1" /><path d="M3 5.5v7a1.5 1.5 0 0 0 1.5 1.5h7a1.5 1.5 0 0 0 1.5-1.5v-7M6.5 8.8h3" /></>,
+  undo: <><path d="M2.7 6.8h6.5a3.6 3.6 0 1 1 0 7.2H6" /><path d="m5.4 4-2.7 2.8 2.7 2.8" /></>,
+  'chevron-right': <path d="m6 3.5 4.5 4.5L6 12.5" />,
+  'chevron-down': <path d="m3.5 6 4.5 4.5L12.5 6" />,
+  folder: <path d="M1.8 4.8a1.5 1.5 0 0 1 1.5-1.5h3l1.5 1.7h4.9a1.5 1.5 0 0 1 1.5 1.5v5.7a1.5 1.5 0 0 1-1.5 1.5H3.3a1.5 1.5 0 0 1-1.5-1.5Z" />,
+  message: <path d="M14 8.7c0 2.6-2.7 4.7-6 4.7a7 7 0 0 1-2-.3L2.3 14.3l.9-2.8A4.4 4.4 0 0 1 2 8.7c0-2.6 2.7-4.7 6-4.7s6 2.1 6 4.7Z" />,
+  package: <><path d="m8 1.7 5.8 3.1v6.4L8 14.3l-5.8-3.1V4.8Z" /><path d="m2.2 4.8 5.8 3.1 5.8-3.1M8 7.9v6.4" /></>,
+  bot: <><rect x="3.2" y="5.4" width="9.6" height="7" rx="2" /><path d="M8 5.4V3.2M1.7 8.8v1.6M14.3 8.8v1.6" /><path d="M6 8.5v.1M10 8.5v.1" /></>,
+  puzzle: <path d="M9.8 2a1.5 1.5 0 0 1 1.5 1.5v.6h.7A1.5 1.5 0 0 1 13.5 5.6v1.9h-.6a1.5 1.5 0 0 0 0 3h.6v1.9a1.5 1.5 0 0 1-1.5 1.5h-1.9v-.6a1.5 1.5 0 0 0-3 0v.6H5.2a1.5 1.5 0 0 1-1.5-1.5v-1.9H3a1.5 1.5 0 0 1 0-3h.7V5.6A1.5 1.5 0 0 1 5.2 4.1h3.1v-.6A1.5 1.5 0 0 1 9.8 2Z" />,
+  grid: <><rect x="2" y="2" width="5" height="5" rx="1" /><rect x="9" y="2" width="5" height="5" rx="1" /><rect x="2" y="9" width="5" height="5" rx="1" /><rect x="9" y="9" width="5" height="5" rx="1" /></>,
+  'arrow-up': <path d="M8 13V3M3.5 7.5 8 3l4.5 4.5" />,
+  paperclip: <path d="m13.1 7.7-5 5a3.7 3.7 0 0 1-5.2-5.2l5.4-5.4a2.4 2.4 0 0 1 3.4 3.4L6.3 10.9a1.2 1.2 0 0 1-1.7-1.7l4.9-4.9" />,
+  more: <><circle cx="3.2" cy="8" r="1.1" fill="currentColor" stroke="none" /><circle cx="8" cy="8" r="1.1" fill="currentColor" stroke="none" /><circle cx="12.8" cy="8" r="1.1" fill="currentColor" stroke="none" /></>,
+  logout: <><path d="M6.2 13.5H3.5a1.5 1.5 0 0 1-1.5-1.5V4a1.5 1.5 0 0 1 1.5-1.5h2.7" /><path d="m9.8 10.7 2.7-2.7-2.7-2.7M12.5 8H6" /></>,
+  key: <><circle cx="5.6" cy="10.4" r="3" /><path d="m7.8 8.2 5-5M11 5l1.6 1.6M9.4 6.6 11 8.2" /></>,
+  user: <><circle cx="8" cy="5.4" r="2.9" /><path d="M2.7 13.8a5.5 5.5 0 0 1 10.6 0" /></>,
+  users: <><circle cx="6.5" cy="5.4" r="2.7" /><path d="M1.8 13.6a4.8 4.8 0 0 1 9.4 0M11 3a2.7 2.7 0 0 1 0 5.2M12.4 10.1a4.8 4.8 0 0 1 1.9 3.5" /></>,
+  shield: <path d="M8 1.8 13 3.6v4.2c0 3.2-2.2 5.4-5 6.4-2.8-1-5-3.2-5-6.4V3.6Z" />,
+  x: <path d="m4 4 8 8M12 4l-8 8" />,
+  check: <path d="m3.2 8.4 3.2 3.2 6.4-6.4" />,
+  alert: <><path d="M8 2 14.3 13.3H1.7Z" /><path d="M8 6.4v3M8 11.4v.1" /></>,
+  send: <path d="M14.3 1.8 1.8 7.1l4.9 1.8 1.8 4.9Z M14.3 1.8 6.7 8.9" />,
+  sparkles: <><path d="m11.3 1.8.9 2.3 2.3.9-2.3.9-.9 2.3-.9-2.3-2.3-.9 2.3-.9Z" /><path d="M5 6.5 5.7 8.3 7.5 9 5.7 9.7 5 11.5 4.3 9.7 2.5 9 4.3 8.3ZM8.4 10.8l.5 1.3 1.3.5-1.3.5-.5 1.3-.5-1.3L6.6 12.6l1.3-.5Z" /></>,
+  clock: <><circle cx="8" cy="8" r="6" /><path d="M8 4.7V8l2.3 1.4" /></>,
+  list: <path d="M5.5 4h8M5.5 8h8M5.5 12h8M2.6 4v.1M2.6 8v.1M2.6 12v.1" />,
+}
+
+export function Icon({ name, size = 16, ...rest }: { name: IconName; size?: number } & SVGProps<SVGSVGElement>) {
+  return (
+    <svg
+      width={size} height={size} viewBox="0 0 16 16" fill="none"
+      stroke="currentColor" strokeWidth="1.6" strokeLinecap="round" strokeLinejoin="round"
+      aria-hidden="true" {...rest}
+    >
+      {PATHS[name]}
+    </svg>
+  )
+}
+
+type IconButtonProps = {
+  name: IconName; size?: number; label: string
+} & Omit<ButtonHTMLAttributes<HTMLButtonElement>, 'title'>
+
+/** 通用图标按钮：尺寸/圆角/悬停统一走 .icon-btn 样式。 */
+export function IconButton({ name, size = 16, label, className = '', ...rest }: IconButtonProps) {
+  return (
+    <button className={`icon-btn ${className}`} type="button" aria-label={label} title={label} {...rest}>
+      <Icon name={name} size={size} />
+    </button>
+  )
+}
+
+/** 品牌标（侧栏/登录页共用）：星芒 + 渐变底。 */
+export function BrandMark({ size = 22 }: { size?: number }) {
+  return (
+    <span className="brand-mark" style={{ width: size, height: size, borderRadius: Math.round(size * 0.3) }}>
+      <Icon name="sparkles" size={Math.round(size * 0.62)} />
+    </span>
+  )
+}
+
+/** 工作区条目历史 emoji 字符串 → 线性图标。 */
+export function workspaceIcon(char: string | undefined): IconName {
+  switch (char) {
+    case '📦': return 'package'
+    case '🤖': return 'bot'
+    case '🧩': return 'puzzle'
+    case '🗂': return 'grid'
+    default: return 'grid'
+  }
+}
diff --git a/src/styles.css b/src/styles.css
index b465556..a81f5c6 100644
--- a/src/styles.css
+++ b/src/styles.css
@@ -1,71 +1,112 @@
-/* 设计令牌与 UI 组件样式已迁入 Agent-System-UI（@ui/tokens.css、@ui/ui.css，main.tsx 引入）。 */
+/* 设计令牌与 UI 组件样式已迁入 Agent-System-UI（@ui/tokens.css、@ui/ui.css，main.tsx 引入）。
+   R4 视觉收敛（2026-09-30）：三级表面阶梯 + 发丝边框 + 圆角标尺 + 克制阴影 + 统一线性图标。 */
 
 * { box-sizing: border-box; }
 html, body, #root { height: 100%; margin: 0; }
-body { font-family: var(--font); background: var(--bg); color: var(--text); font-size: 14px; }
-button { font-family: inherit; }
+body {
+  font-family: var(--font); background: var(--bg); color: var(--text);
+  font-size: 13.5px; line-height: 1.55;
+  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
+}
+button { font-family: inherit; font-size: inherit; color: inherit; }
+::selection { background: var(--accent-soft-2); }
+:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-radius: 2px; }
 
 .app { display: flex; height: 100vh; overflow: hidden; }
 
-/* ---- 三栏布局 ---- */
-.left-nav { background: var(--bg-panel); border-right: 1px solid var(--border); display: flex; flex-direction: column; min-width: 0; flex-shrink: 0; transition: width .08s ease; }
+/* ---- 三栏布局：层次靠背景阶梯（bg-panel 侧栏 / bg 主区），边框只发丝勾边 ---- */
+.left-nav { background: var(--bg-panel); border-right: 1px solid var(--border); display: flex; flex-direction: column; min-width: 0; flex-shrink: 0; transition: width .15s var(--ease); }
 .left-nav.collapsed { width: 52px !important; }
 .divider { width: 4px; cursor: col-resize; background: transparent; flex-shrink: 0; position: relative; }
-.divider:hover, .divider.dragging { background: var(--accent); }
+.divider::before { content: ''; position: absolute; left: 1.5px; top: 0; bottom: 0; width: 1px; background: transparent; transition: background .12s; }
+.divider:hover::before, .divider.dragging::before { background: var(--accent); }
 .divider::after { content: ''; position: absolute; inset: 0 -3px; } /* 拖拽热区加宽 */
 .main { flex: 1; min-width: 0; display: flex; flex-direction: column; background: var(--bg); }
 .right-panel { background: var(--bg-panel); border-left: 1px solid var(--border); display: flex; flex-direction: column; flex-shrink: 0; min-width: 0; }
 .right-panel.collapsed { width: 44px !important; }
 
-/* ---- 左栏：任务中心（方案 A）见文末 tsb-* ---- */
+/* ---- 通用控件 ---- */
+.btn {
+  background: var(--accent); color: var(--text-on-accent); border: none;
+  border-radius: var(--radius); padding: 8px 16px; cursor: pointer;
+  font-size: 13px; font-weight: 550; white-space: nowrap;
+  box-shadow: inset 0 1px 0 rgba(255,255,255,.14), 0 1px 2px rgba(8,9,12,.3);
+  transition: filter .12s var(--ease), transform .12s var(--ease);
+}
+.btn:hover:not(:disabled) { filter: brightness(1.09); }
+.btn:active:not(:disabled) { transform: translateY(1px); }
+.btn:disabled { opacity: .42; cursor: not-allowed; box-shadow: none; }
+.btn.ghost { background: var(--bg-raised); border: 1px solid var(--border-strong); color: var(--text-dim); box-shadow: none; }
+.btn.ghost:hover:not(:disabled) { color: var(--text); border-color: var(--text-faint); filter: none; }
+.btn.danger { background: var(--err); }
+.icon-btn {
+  background: none; border: none; color: var(--text-faint);
+  border-radius: var(--radius-sm); padding: 0; width: 28px; height: 28px;
+  display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
+  transition: background .12s, color .12s;
+}
+.icon-btn:hover { background: var(--bg-hover); color: var(--text); }
+.search-input, .cmd-menu input {
+  background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius);
+  color: var(--text); padding: 7px 11px; font-family: inherit; font-size: 13px; width: 100%;
+  transition: border-color .12s, box-shadow .12s;
+}
+.search-input:focus { border-color: var(--accent); box-shadow: var(--ring); outline: none; }
+
 /* ---- 中栏对话 ---- */
 /* min-height:0 须随列向 flex 链下传（.main→.chat→.chat-body）：flex 项的自动最小
    高度是内容高度，缺失时消息会撑破 .chat——chat-body 永不滚动、输入栏被顶出视口。 */
 .chat { flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
-.chat-header { padding: 10px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; background: var(--bg-raised); }
-.chat-title { font-weight: 600; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-.chat-body { flex: 1; overflow-y: auto; min-height: 0; padding: 18px max(18px, 12%); }
-.empty-state { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text-faint); gap: 8px; }
-.msg { margin-bottom: 18px; }
-.msg-role { font-size: 12px; color: var(--text-faint); margin-bottom: 4px; display: flex; gap: 8px; align-items: center; }
-.msg.user .bubble { background: var(--accent-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px; white-space: pre-wrap; }
+.chat-header { padding: 12px 22px; border-bottom: 1px solid var(--border-soft); display: flex; align-items: center; gap: 10px; background: var(--bg); }
+.chat-title { font-weight: 600; font-size: 14.5px; letter-spacing: -0.01em; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.chat-body { flex: 1; overflow-y: auto; min-height: 0; padding: 22px max(22px, 13%); }
+.empty-state { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text-faint); gap: 10px; font-size: 13.5px; }
+.empty-state .es-mark { width: 44px; height: 44px; border-radius: 12px; background: var(--bg-raised); border: 1px solid var(--border-soft); display: flex; align-items: center; justify-content: center; color: var(--text-faint); margin-bottom: 4px; }
+.empty-state svg { opacity: .5; }
+.msg { margin-bottom: 20px; }
+.msg-role { font-size: 12px; color: var(--text-faint); margin-bottom: 6px; display: flex; gap: 8px; align-items: center; }
+.msg-role .role-mark { width: 18px; height: 18px; border-radius: 5px; display: inline-flex; align-items: center; justify-content: center; color: var(--text-dim); background: var(--bg-raised); border: 1px solid var(--border); }
+.msg.user .bubble {
+  background: var(--accent-soft); border: 1px solid transparent;
+  border-radius: var(--radius-lg); padding: 11px 16px; white-space: pre-wrap;
+}
 .part { margin: 4px 0; }
 .part-thinking { color: var(--text-dim); font-size: 12.5px; border-left: 2px solid var(--border); padding-left: 10px; margin: 4px 0; }
 .part-thinking summary { cursor: pointer; color: var(--text-faint); user-select: none; }
 .part-thinking .part-thinking-body { white-space: pre-wrap; margin-top: 4px; }
 .part-tool { font-size: 12.5px; }
-.tool-chip { display: inline-flex; gap: 6px; align-items: center; background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 4px 8px; margin: 2px 4px 2px 0; font-family: var(--mono); }
+.tool-chip { display: inline-flex; gap: 6px; align-items: center; background: var(--bg-inset); border: 1px solid var(--border-soft); border-radius: var(--radius-sm); padding: 4px 9px; margin: 2px 4px 2px 0; font-family: var(--mono); }
 .tool-chip .status-ok { color: var(--ok); }
 .tool-chip .status-error { color: var(--err); }
-.part-text { line-height: 1.65; overflow-wrap: break-word; }
+.part-text { line-height: 1.7; overflow-wrap: break-word; }
 /* 块级间距只由标签自身控制：禁用 pre-wrap（marked 输出的块间换行会被渲染成空行，
    叠加出"列表逐项空一行"的松散排版）；行内换行语义交给 Markdown 段落。 */
 .part-text > *:first-child { margin-top: 0; }
 .part-text > *:last-child { margin-bottom: 0; }
 .part-text p { margin: 0.5em 0; }
-.part-text :is(h1,h2,h3,h4) { margin: 0.8em 0 0.35em; line-height: 1.35; font-weight: 600; }
+.part-text :is(h1,h2,h3,h4) { margin: 0.8em 0 0.35em; line-height: 1.35; font-weight: 600; letter-spacing: -0.01em; }
 .part-text h1 { font-size: 1.3em; }
 .part-text h2 { font-size: 1.18em; }
 .part-text h3 { font-size: 1.06em; }
 .part-text :is(ul,ol) { margin: 0.4em 0; padding-left: 1.6em; }
 .part-text li { margin: 0.15em 0; }
 .part-text li > p { margin: 0.2em 0; }
-.part-text pre { background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px; overflow-x: auto; font-family: var(--mono); font-size: 12.5px; }
-.part-text code { font-family: var(--mono); background: var(--bg-raised); border-radius: 4px; padding: 1px 5px; font-size: 12.5px; }
+.part-text pre { background: var(--bg-inset); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 11px 13px; overflow-x: auto; font-family: var(--mono); font-size: 12.5px; }
+.part-text code { font-family: var(--mono); background: var(--bg-raised); border-radius: var(--radius-xs); padding: 1px 5px; font-size: 12.5px; }
 .part-text pre code { background: none; padding: 0; }
-.part-text blockquote { margin: 0.5em 0; padding: 0.1em 0 0.1em 10px; border-left: 3px solid var(--border); color: var(--text-dim); }
+.part-text blockquote { margin: 0.5em 0; padding: 0.1em 0 0.1em 10px; border-left: 3px solid var(--border-strong); color: var(--text-dim); }
 .part-text table { border-collapse: collapse; margin: 0.6em 0; font-size: 0.95em; display: block; max-width: 100%; overflow-x: auto; }
 .part-text th, .part-text td { border: 1px solid var(--border); padding: 4px 10px; text-align: left; }
 .part-text th { background: var(--bg-raised); font-weight: 600; }
 .part-text hr { border: none; border-top: 1px solid var(--border); margin: 0.8em 0; }
 .part-text a { color: var(--accent); }
-.part-error { color: var(--err); background: color-mix(in srgb, var(--err) 8%, transparent); border: 1px solid var(--err); border-radius: var(--radius-sm); padding: 8px 12px; }
-.artifact-chip { display: inline-flex; align-items: center; gap: 6px; color: var(--accent); background: var(--accent-soft); border-radius: var(--radius-sm); padding: 4px 10px; cursor: pointer; font-size: 13px; }
-.artifact-chip:hover { filter: brightness(1.15); }
+.part-error { color: var(--err); background: var(--err-soft); border: 1px solid var(--err); border-radius: var(--radius-sm); padding: 8px 12px; }
+.artifact-chip { display: inline-flex; align-items: center; gap: 6px; color: var(--accent); background: var(--accent-soft); border: 1px solid transparent; border-radius: var(--radius-sm); padding: 5px 10px; cursor: pointer; font-size: 13px; transition: background .12s; }
+.artifact-chip:hover { background: var(--accent-soft-2); }
 
 /* 过程折叠（run 终态后） */
-.process-collapse { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-raised); margin: 6px 0; }
-.process-collapse summary { list-style: none; cursor: pointer; padding: 6px 12px; color: var(--text-faint); font-size: 12.5px; display: flex; align-items: center; gap: 8px; user-select: none; }
+.process-collapse { border: 1px solid var(--border-soft); border-radius: var(--radius); background: var(--bg-panel); margin: 6px 0; }
+.process-collapse summary { list-style: none; cursor: pointer; padding: 7px 12px; color: var(--text-faint); font-size: 12.5px; display: flex; align-items: center; gap: 8px; user-select: none; }
 .process-collapse summary::before { content: '▸'; transition: transform .12s; font-size: 10px; }
 .process-collapse[open] summary::before { transform: rotate(90deg); }
 .process-collapse .body { padding: 4px 12px 10px; }
@@ -76,41 +117,37 @@ button { font-family: inherit; }
 @keyframes pulse { 0%,100% { opacity: .4 } 50% { opacity: 1 } }
 .cursor-blink::after { content: '▍'; animation: pulse 1s infinite; color: var(--accent); }
 
-/* HITL 卡片 */
-.hitl-card { border: 1px solid var(--accent); background: var(--bg-raised); border-radius: var(--radius); padding: 14px; margin: 10px 0; }
-.hitl-q { font-weight: 600; margin-bottom: 10px; }
+/* HITL 卡片（确认类交互统一绿色语言） */
+.hitl-card { border: 1px solid var(--ok-border); background: var(--ok-soft); border-radius: var(--radius-lg); padding: 14px; margin: 10px 0; }
+.hitl-q { font-weight: 600; margin-bottom: 10px; display: flex; gap: 8px; align-items: flex-start; }
+.hitl-q svg { color: var(--ok); flex: none; margin-top: 1px; }
 .hitl-choices { display: flex; flex-direction: column; gap: 8px; }
-.hitl-choice { text-align: left; border: 1px solid var(--border); background: var(--bg); color: var(--text); border-radius: var(--radius-sm); padding: 10px 12px; cursor: pointer; }
+.hitl-choice { text-align: left; border: 1px solid var(--border); background: var(--bg-raised); color: var(--text); border-radius: var(--radius); padding: 10px 12px; cursor: pointer; transition: border-color .12s, background .12s; }
 .hitl-choice:hover { border-color: var(--accent); background: var(--accent-soft); }
 .hitl-choice .label { font-weight: 600; display: flex; gap: 8px; align-items: center; }
 .hitl-choice .desc { color: var(--text-dim); font-size: 12.5px; margin-top: 3px; }
 .hitl-choice .impact { color: var(--warn); font-size: 12px; margin-top: 3px; }
-.hitl-choice .rec { font-size: 10.5px; color: var(--accent); border: 1px solid var(--accent); padding: 0 5px; border-radius: 8px; }
+.hitl-choice .rec { font-size: 10.5px; color: var(--accent); border: 1px solid var(--accent); padding: 0 5px; border-radius: var(--radius-full); }
 .hitl-free { display: flex; gap: 8px; margin-top: 10px; }
 
-/* 输入区 */
-.input-bar { border-top: 1px solid var(--border); padding: 12px 18px; background: var(--bg-raised); }
+/* 输入区：悬浮卡片式输入壳（外圆角大、聚焦发光） */
+.input-bar { padding: 8px max(16px, 6%) 16px; background: var(--bg); }
 .attachments { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
-.attach-chip { display: inline-flex; gap: 6px; align-items: center; background: var(--bg-hover); border-radius: var(--radius-sm); padding: 3px 8px; font-size: 12px; }
-.input-row { display: flex; gap: 8px; align-items: flex-end; }
-.input-row textarea { flex: 1; resize: none; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); padding: 10px 12px; font-family: inherit; font-size: 14px; max-height: 160px; outline: none; }
-.input-row textarea:focus { border-color: var(--accent); }
-.btn { background: var(--accent); color: #fff; border: none; border-radius: var(--radius-sm); padding: 9px 16px; cursor: pointer; font-size: 13px; white-space: nowrap; }
-.btn:disabled { opacity: .45; cursor: not-allowed; }
-.btn.ghost { background: none; border: 1px solid var(--border); color: var(--text-dim); }
-.btn.ghost:hover { color: var(--text); border-color: var(--text-faint); }
-.btn.danger { background: var(--err); }
-.icon-btn { background: none; border: 1px solid var(--border); color: var(--text-dim); border-radius: var(--radius-sm); padding: 8px 10px; cursor: pointer; font-size: 14px; }
-.icon-btn:hover { color: var(--text); border-color: var(--text-faint); }
-.cmd-menu { border: 1px solid var(--border); background: var(--bg-raised); border-radius: var(--radius-sm); margin-bottom: 6px; max-height: 180px; overflow-y: auto; }
+.attach-chip { display: inline-flex; gap: 6px; align-items: center; background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 3px 8px; font-size: 12px; }
+.input-row { display: flex; gap: 8px; align-items: flex-end; background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 8px 8px 8px 14px; box-shadow: var(--shadow-md); transition: border-color .12s, box-shadow .12s; }
+.input-row:focus-within { border-color: var(--accent); box-shadow: var(--shadow-md), var(--ring); }
+.input-row textarea { flex: 1; resize: none; background: transparent; border: none; color: var(--text); padding: 6px 0; font-family: inherit; font-size: 13.5px; max-height: 160px; outline: none; }
+.input-row textarea::placeholder { color: var(--text-faint); }
+.cmd-menu { border: 1px solid var(--border); background: var(--bg-raised); border-radius: var(--radius); margin-bottom: 6px; max-height: 180px; overflow-y: auto; box-shadow: var(--shadow-md); }
 .cmd-item { padding: 7px 12px; cursor: pointer; display: flex; gap: 10px; font-size: 13px; }
-.cmd-item:hover, .cmd-item.active { background: var(--accent-soft); }
+.cmd-item:hover, .cmd-item.active { background: var(--bg-hover); }
 .cmd-item .name { color: var(--accent); font-family: var(--mono); }
 
 /* ---- 右栏 ---- */
-.tabs { display: flex; border-bottom: 1px solid var(--border); overflow-x: auto; }
-.tab { background: none; border: none; color: var(--text-dim); padding: 9px 12px; cursor: pointer; font-size: 12.5px; border-bottom: 2px solid transparent; white-space: nowrap; }
-.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
+.tabs { display: flex; border-bottom: 1px solid var(--border-soft); overflow-x: auto; padding: 0 8px; }
+.tab { background: none; border: none; color: var(--text-faint); padding: 10px 10px; cursor: pointer; font-size: 12.5px; font-weight: 550; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
+.tab:hover { color: var(--text-dim); }
+.tab.active { color: var(--text); border-bottom-color: var(--accent); }
 .tab-body { flex: 1; overflow-y: auto; padding: 12px; }
 .step { display: flex; gap: 8px; align-items: flex-start; padding: 6px 4px; font-size: 13px; }
 .step-icon { width: 16px; text-align: center; flex-shrink: 0; }
@@ -131,193 +168,195 @@ button { font-family: inherit; }
 .status-pending, .status-waiting_hitl { background: var(--warn); }
 
 /* ---- 弹窗 / 模态 ---- */
-.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.55); display: flex; align-items: center; justify-content: center; z-index: 50; }
-.modal { background: var(--bg-raised); border: 1px solid var(--border); border-radius: 12px; width: min(860px, 92vw); max-height: 86vh; display: flex; flex-direction: column; box-shadow: 0 18px 60px rgba(0,0,0,.4); }
-.modal-header { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; font-weight: 600; }
+.overlay { position: fixed; inset: 0; background: rgba(8, 9, 12, .6); backdrop-filter: blur(8px); display: flex; align-items: center; justify-content: center; z-index: 50; animation: overlay-in .14s var(--ease); }
+@keyframes overlay-in { from { opacity: 0 } }
+.modal { background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius-xl); width: min(860px, 92vw); max-height: 86vh; display: flex; flex-direction: column; box-shadow: var(--shadow-lg); animation: modal-in .16s var(--ease); }
+@keyframes modal-in { from { opacity: 0; transform: translateY(6px) scale(.99) } }
+.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--border-soft); display: flex; align-items: center; font-weight: 600; font-size: 14.5px; letter-spacing: -0.01em; }
 .modal-header .spacer { flex: 1; }
-.modal-body { flex: 1; overflow-y: auto; padding: 16px 18px; }
+.modal-body { flex: 1; overflow-y: auto; padding: 18px 20px; }
 .subagent-tree { font-size: 13px; }
-.subagent-node { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px; margin-bottom: 8px; }
+.subagent-node { border: 1px solid var(--border); border-radius: var(--radius); padding: 10px; margin-bottom: 8px; background: var(--bg-panel); }
 .subagent-node .head { display: flex; gap: 8px; align-items: center; margin-bottom: 6px; }
 
 /* ---- 设置（schema 驱动）---- */
 .settings-group { margin-bottom: 18px; }
-.settings-group h4 { margin: 0 0 8px; font-size: 13px; color: var(--text-dim); text-transform: uppercase; letter-spacing: .04em; }
-.setting-row { display: grid; grid-template-columns: 200px 1fr auto; gap: 10px; align-items: center; padding: 7px 0; border-bottom: 1px dashed var(--border); font-size: 13px; }
+.settings-group h4 { margin: 0 0 8px; font-size: 11.5px; color: var(--text-faint); text-transform: uppercase; letter-spacing: .07em; font-weight: 600; }
+.setting-row { display: grid; grid-template-columns: 200px 1fr auto; gap: 10px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border-soft); font-size: 13px; }
 .setting-row label { color: var(--text-dim); }
 .setting-row input, .setting-row select { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); padding: 7px 10px; font-family: inherit; }
-.effect-badge { font-size: 10.5px; padding: 2px 7px; border-radius: 8px; border: 1px solid var(--border); color: var(--text-faint); white-space: nowrap; }
+.setting-row input:focus, .setting-row select:focus { border-color: var(--accent); box-shadow: var(--ring); outline: none; }
+.effect-badge { font-size: 10.5px; padding: 2px 7px; border-radius: var(--radius-full); border: 1px solid var(--border); color: var(--text-faint); white-space: nowrap; }
 .effect-hot { color: var(--ok); border-color: var(--ok); }
 .effect-new-run { color: var(--warn); border-color: var(--warn); }
 
-/* UI schema 渲染器样式（.ui-*）与 .doc-viewer 已迁入 @ui/ui.css。 */
-
 /* ---- 杂项 ---- */
-.toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: var(--bg-raised); border: 1px solid var(--border); color: var(--text); padding: 9px 16px; border-radius: 20px; box-shadow: 0 8px 30px rgba(0,0,0,.35); z-index: 90; font-size: 13px; }
+.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--bg-raised); border: 1px solid var(--border); color: var(--text); padding: 9px 16px; border-radius: var(--radius-full); box-shadow: var(--shadow-lg); z-index: 90; font-size: 13px; }
 .conn-dot { width: 8px; height: 8px; border-radius: 50%; }
 .conn-dot.on { background: var(--ok); }
 .conn-dot.off { background: var(--err); }
 .doc-toolbar { display: flex; gap: 8px; margin-bottom: 10px; align-items: center; }
-.search-input { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); padding: 6px 10px; font-family: inherit; width: 100%; }
-::-webkit-scrollbar { width: 9px; height: 9px; }
-::-webkit-scrollbar-thumb { background: var(--bg-active); border-radius: 5px; }
+::-webkit-scrollbar { width: 10px; height: 10px; }
+::-webkit-scrollbar-thumb { background: var(--bg-active); border-radius: 6px; border: 3px solid transparent; background-clip: content-box; }
+::-webkit-scrollbar-thumb:hover { background: var(--border-strong); background-clip: content-box; border: 3px solid transparent; }
 ::-webkit-scrollbar-track { background: transparent; }
 
-/* ---- 登录门（API key 认证，PG 档默认开启） ---- */
-.login-gate {
-  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
-  background: var(--bg, #14161a); z-index: 1000;
-}
-.login-card {
-  width: 360px; padding: 28px; border-radius: 12px; text-align: center;
-  background: #1d2026; border: 1px solid #2c313a; box-shadow: 0 8px 32px rgba(0,0,0,.45);
-}
-.login-card h2 { margin: 0 0 8px; }
-.login-hint { font-size: 12px; color: #9aa3b2; margin-bottom: 16px; line-height: 1.6; }
-.login-card input {
-  width: 100%; box-sizing: border-box; padding: 9px 12px; border-radius: 8px;
-  border: 1px solid #2c313a; background: #14161a; color: inherit; font-size: 14px;
-}
-.login-card button {
-  margin-top: 12px; width: 100%; padding: 9px 0; border: none; border-radius: 8px;
-  background: #3b82f6; color: #fff; font-size: 14px; cursor: pointer;
-}
-.login-err { margin-top: 10px; font-size: 12px; color: #f87171; }
+/* ---- 品牌标（侧栏 / 登录页 / 头像共用的星芒渐变底） ---- */
+.brand-mark { background: linear-gradient(135deg, #6d8dff, #9d7bff); color: #fff; display: inline-flex; align-items: center; justify-content: center; flex: none; box-shadow: inset 0 1px 0 rgba(255,255,255,.22); }
 
-/* 工作区快捷区（T4/D26 左栏）与当前任务常驻卡（D25 R4） */
-.current-task{border:1px solid var(--border);border-radius:8px;padding:8px 10px;margin-bottom:8px;background:rgba(120,160,255,.05)}
-.ct-head{display:flex;align-items:center;gap:8px;font-weight:600;margin-bottom:6px}
-.ct-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
-.ct-progress{font-size:11px;color:var(--text-faint)}
-.project-badge{font-size:11px;padding:1px 8px;border-radius:8px;background:rgba(120,160,255,.15);color:var(--accent);white-space:nowrap}
-.tab-hint{font-size:10px;color:var(--text-faint);align-self:center}
-.empty-note{color:var(--text-faint);font-size:12px;padding:12px 4px}
-
-/* 收纳策略（T5）：收起态角标 + 收纳按钮 */
-.rail-badge{position:absolute;top:-4px;right:-6px;font-size:10px;background:var(--warn,#d29922);color:#fff;border-radius:8px;padding:0 5px;min-width:14px}
-.right-panel.collapsed .icon-only button{position:relative}
-.tab-action{font-size:11px;color:var(--text-faint)}
-
-/* ---- 左栏：任务中心（方案 A，提案 2026-09-30） ---- */
-.tsb-brand { display: flex; align-items: center; gap: 8px; padding: 12px 12px 6px; }
-.tsb-logo { width: 22px; height: 22px; border-radius: 6px; background: var(--accent); color: #fff; font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex: none; }
-.tsb-name { font-weight: 600; font-size: 13.5px; }
+/* ---- 左栏：任务中心（方案 A；R4 重造型） ---- */
+.tsb-brand { display: flex; align-items: center; gap: 9px; padding: 14px 14px 8px; }
+.tsb-logo { width: 24px; height: 24px; border-radius: 8px; background: linear-gradient(135deg, #6d8dff, #9d7bff); color: #fff; font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex: none; }
+.tsb-name { font-weight: 650; font-size: 13.5px; letter-spacing: -0.01em; }
 .tsb-iconbtn { width: 26px; height: 26px; border-radius: var(--radius-sm); background: none; border: none; color: var(--text-faint); cursor: pointer; font-size: 13px; display: inline-flex; align-items: center; justify-content: center; position: relative; }
 .tsb-iconbtn:hover { background: var(--bg-hover); color: var(--text); }
 .tsb-iconbtn.active { color: var(--accent); background: var(--accent-soft); }
 
-.tsb-actions { padding: 4px 10px 8px; display: flex; flex-direction: column; gap: 6px; }
-.tsb-newtask { display: flex; height: 34px; border-radius: var(--radius-sm); border: 1px solid var(--accent); background: var(--accent-soft); overflow: hidden; }
-.tsb-newtask-main { flex: 1; display: flex; align-items: center; gap: 6px; padding: 0 10px; background: none; border: none; color: var(--accent); font-weight: 600; font-size: 13px; cursor: pointer; min-width: 0; }
-.tsb-newtask-main:hover { filter: brightness(1.08); }
-.tsb-newtask-proj { font-weight: 400; font-size: 11.5px; opacity: .8; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-.tsb-newtask-caret { width: 28px; border: none; border-left: 1px solid var(--accent); background: none; color: var(--accent); cursor: pointer; font-size: 10px; }
-.tsb-newtask-caret:hover { background: var(--accent-soft); }
-.tsb-search { height: 30px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--bg-raised); color: var(--text); padding: 0 10px; font-size: 12.5px; width: 100%; }
-.tsb-search:focus { border-color: var(--accent); outline: none; }
-.tsb-search::placeholder { color: var(--text-faint); }
+.tsb-actions { padding: 6px 12px 8px; display: flex; flex-direction: column; gap: 7px; }
+.tsb-newtask { display: flex; height: 36px; border-radius: var(--radius); background: var(--accent); color: var(--text-on-accent); overflow: hidden; box-shadow: inset 0 1px 0 rgba(255,255,255,.16), 0 2px 6px rgba(8,9,12,.28); transition: filter .12s; }
+.tsb-newtask:hover { filter: brightness(1.08); }
+.tsb-newtask-main { flex: 1; display: flex; align-items: center; gap: 7px; padding: 0 11px; background: none; border: none; color: inherit; font-weight: 600; font-size: 13px; cursor: pointer; min-width: 0; }
+.tsb-newtask-main svg { flex: none; }
+.tsb-newtask-proj { font-weight: 450; font-size: 11.5px; opacity: .75; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.tsb-newtask-caret { width: 30px; border: none; border-left: 1px solid rgba(255,255,255,.18); background: none; color: inherit; cursor: pointer; display: flex; align-items: center; justify-content: center; }
+.tsb-newtask-caret:hover { background: rgba(255,255,255,.08); }
+.tsb-search { display: flex; align-items: center; gap: 7px; height: 32px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg-raised); color: var(--text-faint); padding: 0 10px; transition: border-color .12s, box-shadow .12s; }
+.tsb-search:focus-within { border-color: var(--accent); box-shadow: var(--ring); }
+.tsb-search svg { flex: none; }
+.tsb-search input { flex: 1; border: none; background: none; color: var(--text); font-size: 12.5px; outline: none; min-width: 0; }
+.tsb-search input::placeholder { color: var(--text-faint); }
 
-.tsb-orgrow { display: flex; align-items: center; gap: 6px; padding: 0 10px 8px; }
-.tsb-pills { flex: 1; display: flex; background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 2px; gap: 2px; }
-.tsb-pill { flex: 1; height: 22px; border: none; border-radius: 4px; background: none; color: var(--text-faint); font-size: 12px; cursor: pointer; }
+.tsb-orgrow { display: flex; align-items: center; gap: 6px; padding: 0 12px 8px; }
+.tsb-pills { flex: 1; display: flex; background: var(--bg-inset); border: 1px solid var(--border-soft); border-radius: var(--radius-sm); padding: 2px; gap: 2px; }
+.tsb-pill { flex: 1; height: 22px; border: none; border-radius: var(--radius-xs); background: none; color: var(--text-faint); font-size: 12px; cursor: pointer; transition: all .12s; }
 .tsb-pill:hover { color: var(--text-dim); }
-.tsb-pill.on { background: var(--bg-active); color: var(--text); font-weight: 500; }
+.tsb-pill.on { background: var(--bg-raised); color: var(--text); font-weight: 550; box-shadow: 0 1px 2px rgba(8,9,12,.25); }
 
-.tsb-scroll { flex: 1; overflow-y: auto; padding: 0 8px 8px; min-height: 0; }
-.tsb-seclabel { font-size: 11px; color: var(--text-faint); padding: 10px 8px 4px; letter-spacing: .3px; }
-.tsb-empty { padding: 18px 12px; color: var(--text-faint); font-size: 12.5px; line-height: 1.8; text-align: center; }
+.tsb-scroll { flex: 1; overflow-y: auto; padding: 0 10px 8px; min-height: 0; }
+.tsb-seclabel { font-size: 11px; color: var(--text-faint); padding: 12px 8px 4px; letter-spacing: .05em; font-weight: 600; }
+.tsb-empty { padding: 20px 14px; color: var(--text-faint); font-size: 12.5px; line-height: 1.9; text-align: center; }
 .tsb-newproject { padding: 0 2px 8px; }
 
 .tsb-group { margin-bottom: 2px; }
-.tsb-group-head { display: flex; align-items: center; gap: 6px; height: 30px; padding: 0 6px 0 8px; border-radius: var(--radius-sm); color: var(--text-dim); font-weight: 500; font-size: 13px; cursor: pointer; user-select: none; }
+.tsb-group-head { display: flex; align-items: center; gap: 6px; height: 30px; padding: 0 6px 0 4px; border-radius: var(--radius-sm); color: var(--text-dim); font-weight: 550; font-size: 13px; cursor: pointer; user-select: none; }
 .tsb-group-head:hover { background: var(--bg-hover); }
-.tsb-group.closed .tsb-chev { transform: rotate(-90deg); }
-.tsb-chev { font-size: 9px; color: var(--text-faint); transition: transform .12s; }
+.tsb-group.closed .tsb-chev { transform: rotate(0deg); }
+.tsb-chev { display: inline-flex; color: var(--text-faint); transform: rotate(90deg); transition: transform .12s; }
 .tsb-group-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-.tsb-group-cnt { font-size: 11px; color: var(--text-faint); font-weight: 400; }
-.tsb-group-add { visibility: hidden; width: 20px; height: 20px; border: none; border-radius: 4px; background: none; color: var(--text-faint); font-size: 12px; cursor: pointer; }
+.tsb-group-cnt { font-size: 11px; color: var(--text-faint); font-weight: 400; font-variant-numeric: tabular-nums; }
+.tsb-group-add { visibility: hidden; width: 22px; height: 22px; border: none; border-radius: var(--radius-xs); background: none; color: var(--text-faint); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
 .tsb-group-head:hover .tsb-group-add { visibility: visible; }
 .tsb-group-add:hover { background: var(--bg-active); color: var(--text); }
 
-.tsb-task { display: flex; align-items: center; gap: 8px; height: 30px; padding: 0 8px; margin: 1px 0; border-radius: var(--radius-sm); color: var(--text-dim); cursor: pointer; }
+.tsb-task { display: flex; align-items: center; gap: 8px; height: 31px; padding: 0 8px; margin: 1px 0; border-radius: var(--radius-sm); color: var(--text-dim); cursor: pointer; position: relative; transition: background .1s, color .1s; }
 .tsb-task:hover { background: var(--bg-hover); color: var(--text); }
 .tsb-task.active { background: var(--bg-active); color: var(--text); }
+.tsb-task.active::before { content: ''; position: absolute; left: -2px; top: 6px; bottom: 6px; width: 2.5px; border-radius: 2px; background: var(--accent); }
 .tsb-task.archived .tsb-task-t { text-decoration: line-through; opacity: .6; }
 .tsb-task-t { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 13px; }
 .tsb-task-tm { font-size: 11px; color: var(--text-faint); font-variant-numeric: tabular-nums; }
-.tsb-pbadge { font-size: 10.5px; color: var(--text-faint); border: 1px solid var(--border); border-radius: 4px; padding: 0 5px; line-height: 1.5; white-space: nowrap; }
+.tsb-pbadge { font-size: 10.5px; color: var(--text-faint); border: 1px solid var(--border); border-radius: var(--radius-xs); padding: 0 5px; line-height: 1.5; white-space: nowrap; }
 .tsb-row-acts { display: none; gap: 2px; }
 .tsb-task:hover .tsb-row-acts { display: inline-flex; }
 .tsb-task:hover .tsb-task-tm { display: none; }
-.tsb-row-act { border: none; background: none; color: var(--text-faint); font-size: 11px; cursor: pointer; padding: 2px 3px; border-radius: 4px; }
+.tsb-row-act { border: none; background: none; color: var(--text-faint); cursor: pointer; padding: 3px; border-radius: var(--radius-xs); display: inline-flex; }
 .tsb-row-act:hover { background: var(--bg-active); color: var(--text); }
 
-.tsb-wsstrip { display: flex; align-items: center; gap: 2px; padding: 6px 10px; border-top: 1px solid var(--border); }
-.tsb-wsstrip button { border: none; background: none; color: var(--text-faint); font-size: 13px; cursor: pointer; padding: 4px 5px; border-radius: var(--radius-sm); }
+.tsb-wsstrip { display: flex; align-items: center; gap: 2px; padding: 6px 12px; border-top: 1px solid var(--border-soft); }
+.tsb-wsstrip button { border: none; background: none; color: var(--text-faint); cursor: pointer; padding: 5px; border-radius: var(--radius-sm); display: inline-flex; }
 .tsb-wsstrip button:hover { background: var(--bg-hover); color: var(--text); }
 
-.tsb-footer { display: flex; align-items: center; gap: 6px; padding: 8px 10px; border-top: 1px solid var(--border); }
-.tsb-user { flex: 1; display: flex; align-items: center; gap: 8px; min-width: 0; height: 38px; padding: 0 7px; border: none; border-radius: var(--radius-sm); background: none; cursor: pointer; text-align: left; }
+.tsb-footer { display: flex; align-items: center; gap: 4px; padding: 10px 12px; border-top: 1px solid var(--border-soft); }
+.tsb-user { flex: 1; display: flex; align-items: center; gap: 9px; min-width: 0; height: 40px; padding: 0 7px; border: none; border-radius: var(--radius); background: none; cursor: pointer; text-align: left; transition: background .12s; }
 .tsb-user:hover { background: var(--bg-hover); }
-.tsb-avatar { width: 26px; height: 26px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 12px; font-weight: 600; display: flex; align-items: center; justify-content: center; flex: none; }
+.tsb-avatar { width: 27px; height: 27px; border-radius: 50%; background: linear-gradient(135deg, #6d8dff, #9d7bff); color: #fff; font-size: 12px; font-weight: 600; display: flex; align-items: center; justify-content: center; flex: none; box-shadow: inset 0 1px 0 rgba(255,255,255,.2); }
 .tsb-user-info { flex: 1; min-width: 0; display: flex; flex-direction: column; }
 .tsb-user-name { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
 .tsb-user-sub { font-size: 11px; color: var(--text-faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-.tsb-user-chev { color: var(--text-faint); font-size: 10px; }
+.tsb-user-chev { color: var(--text-faint); display: inline-flex; }
 
-.tsb-menu { position: fixed; z-index: 300; min-width: 210px; background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: 0 12px 32px rgba(0,0,0,.35); padding: 5px; display: flex; flex-direction: column; }
-.tsb-mi { display: flex; align-items: center; gap: 8px; min-height: 30px; padding: 4px 9px; border: none; border-radius: var(--radius-sm); background: none; color: var(--text-dim); font-size: 13px; cursor: pointer; text-align: left; }
+.tsb-menu { position: fixed; z-index: 300; min-width: 216px; background: var(--bg-raised); border: 1px solid var(--border-strong); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 5px; display: flex; flex-direction: column; animation: modal-in .12s var(--ease); }
+.tsb-mi { display: flex; align-items: center; gap: 9px; min-height: 31px; padding: 4px 9px; border: none; border-radius: var(--radius-sm); background: none; color: var(--text-dim); font-size: 13px; cursor: pointer; text-align: left; }
+.tsb-mi svg { color: var(--text-faint); flex: none; }
 .tsb-mi:hover { background: var(--bg-hover); color: var(--text); }
+.tsb-mi:hover svg { color: var(--text-dim); }
 .tsb-mi.danger { color: var(--err); }
 .tsb-mi.danger:hover { background: var(--err); color: #fff; }
-.tsb-mi kbd { margin-left: auto; font-size: 10.5px; color: var(--text-faint); }
-.tsb-menu-div { height: 1px; background: var(--border); margin: 5px 4px; }
+.tsb-mi.danger:hover svg { color: #fff; }
+.tsb-mi kbd { margin-left: auto; font-size: 10.5px; font-family: var(--mono); color: var(--text-faint); }
+.tsb-menu-div { height: 1px; background: var(--border-soft); margin: 5px 4px; }
 .tsb-acc-head { display: flex; gap: 10px; align-items: center; padding: 8px 9px 6px; }
 .tsb-acc-name { font-size: 13.5px; font-weight: 600; }
 .tsb-acc-mail { font-size: 11.5px; color: var(--text-faint); }
 
-/* ---- 登录页与改密门（R2 管理员发放制） ---- */
-.lg-wrap { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; background: var(--bg); z-index: 500; }
-.lg-card { width: 380px; max-width: calc(100vw - 32px); background: var(--bg-panel); border: 1px solid var(--border); border-radius: 12px; padding: 28px 28px 22px; box-shadow: 0 12px 40px rgba(0,0,0,.25); }
-.lg-brand { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 15px; margin-bottom: 18px; }
-.lg-logo { width: 26px; height: 26px; border-radius: 8px; background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 13px; }
-.lg-title { margin: 0 0 4px; font-size: 19px; }
-.lg-sub { margin: 0 0 16px; font-size: 12.5px; color: var(--text-faint); line-height: 1.6; }
-.lg-tabs { display: flex; background: var(--bg-raised); border: 1px solid var(--border); border-radius: 8px; padding: 3px; gap: 3px; margin-bottom: 14px; }
-.lg-tab { flex: 1; height: 28px; border: none; border-radius: 6px; background: none; color: var(--text-faint); font-size: 12.5px; cursor: pointer; }
-.lg-tab.on { background: var(--bg-active); color: var(--text); font-weight: 500; }
-.lg-label { display: block; font-size: 12px; font-weight: 500; color: var(--text-dim); margin: 10px 0 5px; }
-.lg-input { width: 100%; height: 36px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-raised); color: var(--text); padding: 0 11px; font-size: 13.5px; }
-.lg-input:focus { border-color: var(--accent); outline: none; }
+/* ---- 登录页与改密门（R4 重造型：宽屏右侧品牌面板） ---- */
+.lg-wrap { position: fixed; inset: 0; display: flex; align-items: stretch; background: var(--bg); z-index: 500; }
+.lg-panel { flex: none; width: 46%; max-width: 620px; position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: center; padding: 64px; color: #dfe4f2; background: linear-gradient(160deg, #171e38 0%, #1d2145 55%, #251d4d 100%); }
+.lg-panel::before { content: ''; position: absolute; width: 560px; height: 560px; border-radius: 50%; background: radial-gradient(closest-side, rgba(109,141,255,.22), transparent 70%); top: -140px; right: -160px; }
+.lg-panel::after { content: ''; position: absolute; width: 440px; height: 440px; border-radius: 50%; background: radial-gradient(closest-side, rgba(157,123,255,.18), transparent 70%); bottom: -150px; left: -120px; }
+.lg-panel h2 { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.35; margin: 0 0 12px; position: relative; }
+.lg-panel p { font-size: 14px; opacity: .72; line-height: 1.75; margin: 0; position: relative; }
+.lg-panel ul { margin: 28px 0 0; list-style: none; display: flex; flex-direction: column; gap: 13px; position: relative; }
+.lg-panel li { display: flex; gap: 10px; align-items: flex-start; font-size: 13.5px; opacity: .88; }
+.lg-panel li svg { margin-top: 2px; color: #8fa8ff; flex: none; }
+.lg-panel .lg-foot { position: absolute; bottom: 28px; left: 64px; right: 64px; display: flex; justify-content: space-between; font-size: 11.5px; opacity: .45; }
+@media (max-width: 960px) { .lg-panel { display: none; } }
+.lg-formside { flex: 1; display: flex; align-items: center; justify-content: center; padding: 24px; min-width: 0; }
+.lg-card { width: 392px; max-width: 100%; }
+.lg-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 15.5px; letter-spacing: -0.01em; margin-bottom: 26px; }
+.lg-title { margin: 0 0 4px; font-size: 22px; font-weight: 700; letter-spacing: -0.02em; }
+.lg-sub { margin: 0 0 18px; font-size: 12.5px; color: var(--text-faint); line-height: 1.6; }
+.lg-tabs { display: flex; background: var(--bg-inset); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 3px; gap: 3px; margin-bottom: 16px; }
+.lg-tab { flex: 1; height: 30px; border: none; border-radius: var(--radius-xs); background: none; color: var(--text-faint); font-size: 12.5px; cursor: pointer; transition: all .12s; }
+.lg-tab:hover { color: var(--text-dim); }
+.lg-tab.on { background: var(--bg-raised); color: var(--text); font-weight: 550; box-shadow: 0 1px 2px rgba(8,9,12,.25); }
+.lg-label { display: block; font-size: 12px; font-weight: 550; color: var(--text-dim); margin: 12px 0 6px; }
+.lg-input { width: 100%; height: 38px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg-raised); color: var(--text); padding: 0 12px; font-size: 13.5px; transition: border-color .12s, box-shadow .12s; }
+.lg-input:focus { border-color: var(--accent); box-shadow: var(--ring); outline: none; }
 .lg-mono { font-family: var(--mono); font-size: 12.5px; }
-.lg-err { margin-top: 10px; font-size: 12.5px; color: var(--err); background: rgba(224,86,107,.08); border: 1px solid rgba(224,86,107,.3); border-radius: 8px; padding: 7px 10px; }
-.lg-submit { width: 100%; height: 36px; margin-top: 14px; border: none; border-radius: 8px; background: var(--accent); color: #fff; font-weight: 600; font-size: 13.5px; cursor: pointer; }
-.lg-submit:disabled { opacity: .55; cursor: default; }
-.lg-submit:not(:disabled):hover { filter: brightness(1.08); }
+.lg-err { margin-top: 12px; font-size: 12.5px; color: var(--err); background: var(--err-soft); border: 1px solid color-mix(in srgb, var(--err) 35%, transparent); border-radius: var(--radius); padding: 8px 11px; display: flex; gap: 7px; align-items: flex-start; }
+.lg-err svg { flex: none; margin-top: 1px; }
+.lg-submit {
+  width: 100%; height: 38px; margin-top: 16px; border: none; border-radius: var(--radius);
+  background: var(--accent); color: var(--text-on-accent); font-weight: 600; font-size: 13.5px; cursor: pointer;
+  box-shadow: inset 0 1px 0 rgba(255,255,255,.16), 0 2px 8px var(--accent-glow);
+  transition: filter .12s, transform .12s;
+}
+.lg-submit:disabled { opacity: .45; cursor: default; box-shadow: none; }
+.lg-submit:not(:disabled):hover { filter: brightness(1.09); }
+.lg-submit:not(:disabled):active { transform: translateY(1px); }
 .lg-cancel { width: 100%; margin-top: 8px; border: none; background: none; color: var(--text-faint); font-size: 12.5px; cursor: pointer; }
 .lg-cancel:hover { color: var(--text-dim); text-decoration: underline; }
-.lg-hint { margin: 12px 0 0; font-size: 11.5px; color: var(--text-faint); line-height: 1.7; }
-.lg-hint code { font-family: var(--mono); font-size: 10.5px; background: var(--bg-raised); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; }
+.lg-hint { margin: 14px 0 0; font-size: 11.5px; color: var(--text-faint); line-height: 1.7; }
+.lg-hint code { font-family: var(--mono); font-size: 10.5px; background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius-xs); padding: 1px 5px; }
 
 /* ---- 用户管理 / 改密弹层 ---- */
-.ad-body { padding: 14px 18px 18px; display: flex; flex-direction: column; gap: 12px; max-height: 70vh; overflow-y: auto; }
-.ad-create { border: 1px solid var(--border); border-radius: 10px; padding: 12px; display: flex; flex-direction: column; gap: 8px; background: var(--bg-raised); }
+.ad-body { padding: 16px 20px 20px; display: flex; flex-direction: column; gap: 12px; max-height: 70vh; overflow-y: auto; }
+.ad-create { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 14px; display: flex; flex-direction: column; gap: 8px; background: var(--bg-panel); }
 .ad-row { display: flex; gap: 8px; align-items: center; }
-.ad-row .lg-input { flex: 1; min-width: 0; height: 32px; }
+.ad-row .lg-input { flex: 1; min-width: 0; height: 34px; }
 .ad-check { display: flex; align-items: center; gap: 5px; font-size: 12.5px; color: var(--text-dim); white-space: nowrap; }
-.ad-create-btn { width: auto; padding: 0 14px; margin-top: 0; height: 32px; flex: none; }
-.ad-mini { border: 1px solid var(--border); background: var(--bg-raised); color: var(--text-dim); border-radius: 6px; padding: 4px 9px; font-size: 12px; cursor: pointer; white-space: nowrap; }
+.ad-create-btn { width: auto; padding: 0 14px; margin-top: 0; height: 34px; flex: none; box-shadow: inset 0 1px 0 rgba(255,255,255,.14); }
+.ad-mini { border: 1px solid var(--border); background: var(--bg-raised); color: var(--text-dim); border-radius: var(--radius-sm); padding: 4px 9px; font-size: 12px; cursor: pointer; white-space: nowrap; display: inline-flex; align-items: center; gap: 4px; }
 .ad-mini:hover { color: var(--text); border-color: var(--accent); }
 .ad-hint { margin: 0; font-size: 11.5px; color: var(--text-faint); }
-.ad-notice { font-size: 12.5px; color: var(--ok); background: rgba(65,178,110,.09); border: 1px solid rgba(65,178,110,.3); border-radius: 8px; padding: 8px 11px; }
+.ad-notice { font-size: 12.5px; color: var(--ok); background: var(--ok-soft); border: 1px solid var(--ok-border); border-radius: var(--radius); padding: 8px 11px; display: flex; gap: 7px; align-items: flex-start; }
+.ad-notice svg { flex: none; margin-top: 1px; }
 .ad-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
-.ad-table th { text-align: left; font-weight: 500; color: var(--text-faint); font-size: 11.5px; padding: 6px 8px; border-bottom: 1px solid var(--border); }
-.ad-table td { padding: 7px 8px; border-bottom: 1px solid var(--border); }
+.ad-table th { text-align: left; font-weight: 600; color: var(--text-faint); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; padding: 8px; border-bottom: 1px solid var(--border); }
+.ad-table td { padding: 9px 8px; border-bottom: 1px solid var(--border-soft); }
+.ad-table tr:last-child td { border-bottom: none; }
 .ad-mono { font-family: var(--mono); font-size: 12px; }
 .ad-dim { color: var(--text-faint); }
-.ad-chip { font-size: 10px; border-radius: 4px; padding: 1px 6px; font-weight: 700; letter-spacing: .4px; background: var(--bg-hover); color: var(--text-faint); }
+.ad-chip { font-size: 10px; border-radius: var(--radius-xs); padding: 2px 7px; font-weight: 700; letter-spacing: .5px; background: var(--bg-hover); color: var(--text-faint); }
 .ad-chip-admin { background: var(--accent-soft); color: var(--accent); }
-.ad-chip-warn { background: rgba(217,155,63,.15); color: var(--warn); }
-.ad-reset { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; border: 1px solid var(--warn); border-radius: 10px; padding: 12px; font-size: 12.5px; }
+.ad-chip-warn { background: var(--warn-soft); color: var(--warn); }
+.ad-reset { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent); background: var(--warn-soft); border-radius: var(--radius-lg); padding: 12px; font-size: 12.5px; }
 .ad-reset .lg-input { flex: 1; min-width: 160px; height: 32px; }
 .ad-changepw { display: flex; flex-direction: column; gap: 2px; max-width: 340px; }
+
+/* ---- 收起轨道（左栏收起态） ---- */
+.icon-only { display: flex; flex-direction: column; align-items: center; gap: 6px; padding-top: 12px; }
+.icon-only button { background: none; border: none; color: var(--text-faint); cursor: pointer; padding: 0; width: 34px; height: 34px; border-radius: var(--radius); display: inline-flex; align-items: center; justify-content: center; position: relative; }
+.icon-only button:hover { background: var(--bg-hover); color: var(--text); }
+.rail-badge { position: absolute; top: 3px; right: 3px; min-width: 14px; height: 14px; border-radius: 7px; background: var(--warn); color: #fff; font-size: 9.5px; font-weight: 700; display: flex; align-items: center; justify-content: center; padding: 0 4px; }
diff --git a/tsconfig.tsbuildinfo b/tsconfig.tsbuildinfo
index e4fba48..eb975a8 100644
--- a/tsconfig.tsbuildinfo
+++ b/tsconfig.tsbuildinfo
@@ -1 +1 @@
-{"root":["./src/App.tsx","./src/api.ts","./src/auth.ts","./src/contracts.ts","./src/main.tsx","./src/passwords.ts","./src/store.ts","./src/tasklist.ts","./src/components/AdminUsersModal.tsx","./src/components/AgentTracker.tsx","./src/components/Conversation.tsx","./src/components/DocViewer.tsx","./src/components/LoginPage.tsx","./src/components/SettingsModal.tsx","./src/components/TaskSidebar.tsx","./src/components/Workbench.tsx","./src/components/Workspaces.tsx","./test/auth.test.ts","./test/contracts.test.ts","./test/tasklist.test.ts"],"version":"5.9.3"}
\ No newline at end of file
+{"root":["./src/App.tsx","./src/api.ts","./src/auth.ts","./src/contracts.ts","./src/icons.tsx","./src/main.tsx","./src/passwords.ts","./src/store.ts","./src/tasklist.ts","./src/components/AdminUsersModal.tsx","./src/components/AgentTracker.tsx","./src/components/Conversation.tsx","./src/components/DocViewer.tsx","./src/components/LoginPage.tsx","./src/components/SettingsModal.tsx","./src/components/TaskSidebar.tsx","./src/components/Workbench.tsx","./src/components/Workspaces.tsx","./test/auth.test.ts","./test/contracts.test.ts","./test/tasklist.test.ts"],"version":"5.9.3"}
\ No newline at end of file