diff --git a/frontend-web/src/components/page-sidebar-dark.tsx b/frontend-web/src/components/page-sidebar-dark.tsx
index 2670f137..4d409edf 100644
--- a/frontend-web/src/components/page-sidebar-dark.tsx
+++ b/frontend-web/src/components/page-sidebar-dark.tsx
@@ -1,5 +1,6 @@
 import { useEffect, useRef, useState } from "react";
 import { useNavigate, useLocation } from "react-router-dom";
+import { PanelLeftOpen, PanelLeftClose } from "lucide-react";
 
 import { getStoredAuth } from "@/core/auth";
 import { isWujieEnv } from "@/core/embed/wujie";
@@ -12,7 +13,13 @@ import {
 import { useSidebarMenuItems } from "@/core/page-layout/use-sidebar-menu";
 import './page-sdebar.css'
 
-export function PageSidebarDark() {
+type PageSidebarDarkProps = {
+  /** 是否收起（true 时只渲染左下角浮动入口，sidebar 主体隐藏） */
+  collapsed: boolean;
+  onToggleCollapsed: () => void;
+};
+
+export function PageSidebarDark({ collapsed, onToggleCollapsed }: PageSidebarDarkProps) {
   const isAdmin = getStoredAuth()?.system_role === "admin";
   const visibleMenuItems = useSidebarMenuItems(!!isAdmin);
   const inWujieEnv = isWujieEnv();
@@ -189,6 +196,22 @@ export function PageSidebarDark() {
     </div>
   );
 
+  // 收起时主侧栏不占宽度，保留左下角入口以便随时恢复。
+  if (collapsed) {
+    return (
+      <button
+        type="button"
+        title="展开侧边栏"
+        aria-label="展开侧边栏"
+        className="sidebar-collapse-btn sidebar-collapse-btn--floating"
+        onClick={onToggleCollapsed}
+      >
+        <PanelLeftOpen className="sidebar-collapse-btn__icon" aria-hidden="true" />
+        <span className="sidebar-collapse-btn__label">展开面板</span>
+      </button>
+    );
+  }
+
   return (
     <aside className={`sidebar-contnet ${inWujieEnv ? "" : "sidebar-contnet--top-submenu"}`}>
       <div className="sidebar-contents">
@@ -220,6 +243,17 @@ export function PageSidebarDark() {
             </div>
           </div>
         ))}
+
+        <button
+          type="button"
+          title="收起侧边栏"
+          aria-label="收起侧边栏"
+          className="sidebar-collapse-btn sidebar-collapse-btn--inline"
+          onClick={onToggleCollapsed}
+        >
+          <PanelLeftClose className="sidebar-collapse-btn__icon" aria-hidden="true" />
+          <span className="sidebar-collapse-btn__label">收起面板</span>
+        </button>
       </div>
     </aside>
   );
diff --git a/frontend-web/src/pages/PageRoutes.tsx b/frontend-web/src/pages/PageRoutes.tsx
index 54b98a5c..f76e80ad 100644
--- a/frontend-web/src/pages/PageRoutes.tsx
+++ b/frontend-web/src/pages/PageRoutes.tsx
@@ -31,8 +31,6 @@ function PageLayout() {
   const location = useLocation();
   const { theme } = useTheme();
   const isDark = theme === "dark";
-  // 深色导航侧栏不提供收起入口，始终保持展开，避免切换主题后沿用浅色模式的收起状态。
-  const sidebarCollapsed = isDark ? false : collapsed;
   // 浅色非嵌入：侧边栏为新版「二级导航图标卡片」窄栏(96px)；wujie 嵌入仍走旧版手风琴(64/256px)。
   const inWujie = useMemo(() => isWujieEnv(), []);
   const lightNarrowSidebar = !isDark && !inWujie;
@@ -76,14 +74,17 @@ function PageLayout() {
   return (
     <RoundtableJobNotifier>
     <div className="h-full flex flex-col bg-muted/20">
-      {pageSidebarAllowed && <Header collapsed={sidebarCollapsed} />}
+      {pageSidebarAllowed && <Header collapsed={collapsed} />}
       <div className="flex flex-1 overflow-hidden">
         {pageSidebarAllowed && (
           isDark ? (
-            <PageSidebarDark />
+            <PageSidebarDark
+              collapsed={collapsed}
+              onToggleCollapsed={() => setCollapsed((prev) => !prev)}
+            />
           ) : (
             <PageSidebar
-              collapsed={sidebarCollapsed}
+              collapsed={collapsed}
               onToggleCollapsed={() => setCollapsed((prev) => !prev)}
             />
           )
@@ -93,8 +94,8 @@ function PageLayout() {
             !pageSidebarAllowed
               ? ""
               : isDark
-                // 深色 sidebar 固定展开 118px（10 + 98 + 10 gap）。
-                ? "pl-[118px]"
+                // 深色 sidebar：展开 118px（10 + 98 + 10 gap），收起时主内容不留左内边距。
+                ? (collapsed ? "pl-0" : "pl-[118px]")
                 : lightNarrowSidebar
                   // 浅色新版窄栏：展开三级列时 96→236px，主内容左内边距随之过渡
                   ? `transition-[padding] duration-300 ${lightExpanded ? "pl-[236px]" : "pl-[96px]"}`
@@ -108,7 +109,7 @@ function PageLayout() {
               path="workspace/*"
               element={
                 <WorkspaceRoutes
-                  pageSidebarCollapsed={sidebarCollapsed}
+                  pageSidebarCollapsed={collapsed}
                   pageSidebarHidden={!pageSidebarAllowed}
                   headerHidden={!pageSidebarAllowed}
                   compactWorkspaceSidebar={pageSidebarAllowed}
diff --git a/frontend-web/src/roundtable-planning/pages/RoundtablePlanningPage.tsx b/frontend-web/src/roundtable-planning/pages/RoundtablePlanningPage.tsx
index 7dcfa251..c42ba663 100644
--- a/frontend-web/src/roundtable-planning/pages/RoundtablePlanningPage.tsx
+++ b/frontend-web/src/roundtable-planning/pages/RoundtablePlanningPage.tsx
@@ -4240,7 +4240,7 @@ function RightSidebar({
             {timelineEntries.map((entry) => (
               <div
                 key={entry.id}
-                className="relative rounded-lg px-1.5 py-1 transition-colors hover:bg-slate-50/80"
+                className="roundtable-clarification-entry relative rounded-lg px-1.5 py-1 transition-colors hover:bg-slate-50/80"
               >
                 <div className="absolute -left-[20.5px] top-2 h-3 w-3 rounded-full bg-primary border-2 border-white ring-2 ring-[var(--brand-200)]" />
                 <div className="grid grid-cols-[68px_minmax(0,1fr)] gap-x-2">
diff --git a/frontend-web/src/roundtable-planning/styles/roundtable-planning.css b/frontend-web/src/roundtable-planning/styles/roundtable-planning.css
index bf583d12..1584742a 100644
--- a/frontend-web/src/roundtable-planning/styles/roundtable-planning.css
+++ b/frontend-web/src/roundtable-planning/styles/roundtable-planning.css
@@ -343,6 +343,17 @@
   color: var(--muted-foreground) !important;
 }
 
+/* ---- Step1 右侧「澄清记录」：覆盖 hover:bg-slate-50/80，避免深色下泛灰白 ---- */
+:is(.dark .roundtable-planning, .roundtable-planning--dark)
+  .roundtable-clarification-entry:hover {
+  background-color: rgb(22 119 255 / 18%) !important;
+}
+
+:is(.dark .roundtable-planning, .roundtable-planning--dark)
+  .roundtable-clarification-entry:hover h4 {
+  color: #e8edf5 !important;
+}
+
 /* ---- focus ring：brand-200 → 主色淡环 ---- */
 :is(.dark .roundtable-planning, .roundtable-planning--dark)
   :is(
diff --git a/frontend-web/src/strategy-components/Header.tsx b/frontend-web/src/strategy-components/Header.tsx
index 3ebee2a5..3ca08ddc 100644
--- a/frontend-web/src/strategy-components/Header.tsx
+++ b/frontend-web/src/strategy-components/Header.tsx
@@ -59,7 +59,8 @@ const Header = ({ collapsed }: HeaderProps) => {
   const positionName = myPosition?.name?.trim() || "";
 
   const displayName = liveAccount.displayName;
-  const showTopNav = isDark && !collapsed && !isWujieEnv();
+  // 深色侧栏收起只影响左侧导航，不应让顶栏回退到浅色的图标布局。
+  const showTopNav = isDark && !isWujieEnv();
   // 浅色（红/蓝）顶栏：一级导航正常横排进顶栏，不做深色那种围绕基座的特殊处理。
   // 与 collapsed 解耦（折叠只影响侧边栏，一级导航始终可见）；wujie 嵌入下隐藏，
   // 此时一级导航回落到侧边栏（见 page-sidebar.tsx）。