diff --git a/ruoyi-ui/src/views/childRoom/SixStepsOverlay.vue b/ruoyi-ui/src/views/childRoom/SixStepsOverlay.vue
index df7953f..cd49062 100644
--- a/ruoyi-ui/src/views/childRoom/SixStepsOverlay.vue
+++ b/ruoyi-ui/src/views/childRoom/SixStepsOverlay.vue
@@ -16,6 +16,7 @@
             class="header-sub-title"
             :class="{ active: activeUnderstandingSubIndex === idx }"
             @click="activeUnderstandingSubIndex = idx"
+            @contextmenu.prevent="onSubTitleContextMenu('understanding', idx, $event)"
           >
             {{ sub }}
           </div>
@@ -24,9 +25,15 @@
               <i class="el-icon-plus"></i> 插入
             </el-button>
             <el-dropdown-menu slot="dropdown">
+              <el-dropdown-item command="subTitle">
+                <i class="el-icon-menu"></i> 小标题
+              </el-dropdown-item>
               <el-dropdown-item command="background">
                 <i class="el-icon-picture-outline"></i> 背景
               </el-dropdown-item>
+              <el-dropdown-item command="removeBackground" :disabled="!sixStepsSharedBackground">
+                <i class="el-icon-delete"></i> 删除背景
+              </el-dropdown-item>
               <el-dropdown-item command="icon">
                 <i class="el-icon-s-opportunity"></i> 图标
               </el-dropdown-item>
@@ -36,15 +43,32 @@
             </el-dropdown-menu>
           </el-dropdown>
         </template>
-        <!-- 任务页：插入按钮 -->
-        <el-dropdown v-else-if="overrideTitle === '任务'" trigger="click" @command="handleInsertCommand" class="header-insert">
+        <!-- 后五步（判断、规划、准备、执行、评估）：小标题 + 插入按钮 -->
+        <template v-else-if="currentStepIndex >= 1 && currentStepIndex <= 5">
+          <div
+            v-for="(sub, idx) in getStepContent(currentStepIndex).subTitles"
+            :key="idx"
+            class="header-sub-title"
+            :class="{ active: activeStepSubIndex === idx }"
+            @click="activeStepSubIndex = idx"
+            @contextmenu.prevent="onSubTitleContextMenu('step', idx, $event)"
+          >
+            {{ sub }}
+          </div>
+          <el-dropdown trigger="click" @command="handleStepInsertCommand" class="header-insert">
           <el-button size="small" type="primary" plain>
             <i class="el-icon-plus"></i> 插入
           </el-button>
           <el-dropdown-menu slot="dropdown">
+            <el-dropdown-item command="subTitle">
+              <i class="el-icon-menu"></i> 小标题
+            </el-dropdown-item>
             <el-dropdown-item command="background">
               <i class="el-icon-picture-outline"></i> 背景
             </el-dropdown-item>
+            <el-dropdown-item command="removeBackground" :disabled="!sixStepsSharedBackground">
+              <i class="el-icon-delete"></i> 删除背景
+            </el-dropdown-item>
             <el-dropdown-item command="icon">
               <i class="el-icon-s-opportunity"></i> 图标
             </el-dropdown-item>
@@ -53,17 +77,59 @@
             </el-dropdown-item>
           </el-dropdown-menu>
         </el-dropdown>
+        </template>
+        <!-- 任务页：小标题 + 插入按钮 -->
+        <template v-else-if="overrideTitle === '任务'">
+          <div
+            v-for="(sub, idx) in taskSubTitles"
+            :key="idx"
+            class="header-sub-title"
+            :class="{ active: activeTaskSubIndex === idx }"
+            @click="activeTaskSubIndex = idx"
+            @contextmenu.prevent="onSubTitleContextMenu('task', idx, $event)"
+          >
+            {{ sub }}
+          </div>
+          <el-dropdown trigger="click" @command="handleInsertCommand" class="header-insert">
+          <el-button size="small" type="primary" plain>
+            <i class="el-icon-plus"></i> 插入
+          </el-button>
+          <el-dropdown-menu slot="dropdown">
+            <el-dropdown-item command="subTitle">
+              <i class="el-icon-menu"></i> 小标题
+            </el-dropdown-item>
+            <el-dropdown-item command="background">
+              <i class="el-icon-picture-outline"></i> 背景
+            </el-dropdown-item>
+            <el-dropdown-item command="removeBackground" :disabled="!taskPageBackground">
+              <i class="el-icon-delete"></i> 删除背景
+            </el-dropdown-item>
+            <el-dropdown-item command="icon">
+              <i class="el-icon-s-opportunity"></i> 图标
+            </el-dropdown-item>
+            <el-dropdown-item command="textbox">
+              <i class="el-icon-edit-outline"></i> 文本框
+            </el-dropdown-item>
+          </el-dropdown-menu>
+        </el-dropdown>
+        </template>
       </div>
     </div>
     <div class="overlay-body" :style="overlayBodyStyle">
-      <div class="overlay-content" :class="{ 'task-page': overrideTitle === '任务', 'understanding-page': currentStepIndex === 0 && !overrideTitle }">
+      <div class="overlay-content" :class="{
+        'task-page': overrideTitle === '任务',
+        'understanding-page': currentStepIndex === 0 && !overrideTitle,
+        'step-page': currentStepIndex >= 1 && currentStepIndex <= 5
+      }">
         <!-- 任务页：插入工具栏 + 可编辑画布 -->
         <task-page-content
           v-if="overrideTitle === '任务'"
           ref="taskPage"
           :room-id="roomId"
           :background-image="taskPageBackground"
+          :task-sub-titles="taskSubTitles"
           @background-change="taskPageBackground = $event"
+          @task-sub-titles-change="taskSubTitles = $event"
           class="task-page-body"
         />
         <!-- 理解步骤：4 子标题 + 可编辑画布 -->
@@ -72,10 +138,21 @@
           ref="understandingStep"
           :background-image="sixStepsSharedBackground"
           :active-sub-index="activeUnderstandingSubIndex"
+          :sub-titles="understandingSubTitles"
           @background-change="sixStepsSharedBackground = $event"
           class="understanding-page-body"
         />
-        <!-- 判断、规划、准备、执行、评估：使用共享背景 -->
+        <!-- 判断、规划、准备、执行、评估：可编辑画布，六步共享背景 -->
+        <step-canvas-content
+          v-else-if="currentStepIndex >= 1 && currentStepIndex <= 5"
+          ref="stepCanvas"
+          :key="currentStepIndex"
+          :content="getStepContent(currentStepIndex)"
+          :active-sub-index="activeStepSubIndex"
+          :background-image="sixStepsSharedBackground"
+          @background-change="sixStepsSharedBackground = $event"
+          class="step-canvas-body"
+        />
         <div v-else class="blank-placeholder">
           <i class="el-icon-document"></i>
           <p>{{ currentStepTitle }} - 内容区域</p>
@@ -84,6 +161,27 @@
       </div>
     </div>
     </div>
+    <!-- 小标题右键菜单 -->
+    <div
+      v-if="subTitleContextMenu.visible"
+      ref="subTitleContextMenuRef"
+      class="sub-title-context-menu"
+      :style="{ left: subTitleContextMenu.x + 'px', top: subTitleContextMenu.y + 'px' }"
+      @click.stop
+    >
+      <div class="context-menu-item" @click="editSubTitle">
+        <i class="el-icon-edit"></i>
+        <span>编辑</span>
+      </div>
+      <div class="context-menu-item" @click="insertNewPage">
+        <i class="el-icon-document-add"></i>
+        <span>插入新的一页</span>
+      </div>
+      <div class="context-menu-item context-menu-item-danger" @click="deleteSubTitle">
+        <i class="el-icon-delete"></i>
+        <span>删除</span>
+      </div>
+    </div>
     <!-- 右侧栏：任务 + 1-6 步，垂直排列 -->
     <div class="overlay-sidebar">
       <div class="sidebar-steps">
@@ -112,10 +210,21 @@
 <script>
 import TaskPageContent from './TaskPageContent.vue'
 import UnderstandingStepContent from './UnderstandingStepContent.vue'
+import StepCanvasContent from './StepCanvasContent.vue'
+import {
+  createRollCallTextBoxes,
+  createSubTitleTemplate,
+  createIntentBriefingTemplate,
+  createTaskPlanningTemplate,
+  createSimpleTitleTemplate,
+  SUB_TITLE_TEMPLATE_NAMES,
+  SIMPLE_TITLE_NAMES
+} from './rollCallTemplate'
+import { ensurePagesStructure, createEmptySubContent } from './subContentPages'
 
 export default {
   name: 'SixStepsOverlay',
-  components: { TaskPageContent, UnderstandingStepContent },
+  components: { TaskPageContent, UnderstandingStepContent, StepCanvasContent },
   props: {
     roomId: {
       type: [Number, String],
@@ -155,10 +264,35 @@ export default {
     return {
       taskPageBackground: null,
       sixStepsSharedBackground: null,
-      understandingSubTitles: ['点名', '接收解析任务', 'XXXX', 'XXXX'],
-      activeUnderstandingSubIndex: 0
+      understandingSubTitles: ['点名', '任务目标', '自身任务', '对接任务'],
+      activeUnderstandingSubIndex: 0,
+      taskSubTitles: [],
+      activeTaskSubIndex: 0,
+      activeStepSubIndex: 0,
+      stepContents: {},
+      subTitleContextMenu: {
+        visible: false,
+        x: 0,
+        y: 0,
+        target: null,
+        index: -1
+      }
     }
   },
+  watch: {
+    currentStepIndex() {
+      this.activeStepSubIndex = 0
+    },
+    overrideTitle() {
+      this.activeTaskSubIndex = 0
+    }
+  },
+  mounted() {
+    document.addEventListener('click', this.onDocumentClickForSubTitleMenu)
+  },
+  beforeDestroy() {
+    document.removeEventListener('click', this.onDocumentClickForSubTitleMenu)
+  },
   computed: {
     currentStepTitle() {
       if (this.overrideTitle) return this.overrideTitle
@@ -166,14 +300,7 @@ export default {
     },
     overlayBodyStyle() {
       if (this.overrideTitle === '任务') return {}
-      if (this.currentStepIndex >= 1 && this.sixStepsSharedBackground) {
-        return {
-          backgroundImage: `url(${this.sixStepsSharedBackground})`,
-          backgroundSize: '100% 100%',
-          backgroundPosition: 'center',
-          backgroundRepeat: 'no-repeat'
-        }
-      }
+      if (this.currentStepIndex >= 1 && this.currentStepIndex <= 5) return {}
       return {}
     }
   },
@@ -181,15 +308,209 @@ export default {
     close() {
       this.$emit('close')
     },
+    getStepContent(stepIndex) {
+      let step = this.stepContents[stepIndex]
+      if (step) {
+        if (!step.subContents && step.subTitles) {
+          step.subContents = step.subTitles.map(() => createEmptySubContent())
+          if (step.icons?.length || step.textBoxes?.length) {
+            step.subContents[0] = createEmptySubContent()
+            step.subContents[0].pages[0] = { icons: step.icons || [], textBoxes: step.textBoxes || [] }
+          }
+        }
+        return step
+      }
+      {
+        const defaultSubTitles = stepIndex === 1
+          ? ['相关规定', '敌情', '意图通报', '威胁判断']
+          : stepIndex === 2
+            ? ['任务规划', '职责分工', '点名', '第一次进度检查', '点名', '第二次进度检查', '点名', '产品生成']
+            : stepIndex === 3
+              ? ['点名', '集体协同']
+              : stepIndex === 4
+                ? ['任务执行']
+                : stepIndex === 5
+                  ? ['评估']
+                  : []
+        this.$set(this.stepContents, stepIndex, {
+          subTitles: defaultSubTitles,
+          subContents: defaultSubTitles.map(() => createEmptySubContent())
+        })
+        return this.stepContents[stepIndex]
+      }
+    },
+    async addSubTitle(target) {
+      try {
+        const { value } = await this.$prompt('请输入小标题名称', '插入小标题', {
+          confirmButtonText: '确定',
+          cancelButtonText: '取消',
+          inputValue: '新标题',
+          inputPattern: /\S+/,
+          inputErrorMessage: '请输入小标题名称'
+        })
+        if (value && value.trim()) {
+          if (target === 'understanding') {
+            this.understandingSubTitles.push(value.trim())
+          } else if (target === 'task') {
+            this.taskSubTitles.push(value.trim())
+          } else if (target === 'step') {
+            const step = this.getStepContent(this.currentStepIndex)
+            step.subTitles.push(value.trim())
+            step.subContents.push(createEmptySubContent())
+          }
+        }
+      } catch (_) {}
+    },
     handleInsertCommand(cmd) {
+      if (cmd === 'subTitle') {
+        this.addSubTitle('task')
+        return
+      }
       if (this.$refs.taskPage) {
         this.$refs.taskPage.handleInsertCommand(cmd)
       }
     },
     handleUnderstandingInsertCommand(cmd) {
+      if (cmd === 'subTitle') {
+        this.addSubTitle('understanding')
+        return
+      }
       if (this.$refs.understandingStep) {
         this.$refs.understandingStep.handleInsertCommand(cmd)
       }
+    },
+    handleStepInsertCommand(cmd) {
+      if (cmd === 'subTitle') {
+        this.addSubTitle('step')
+        return
+      }
+      if (this.$refs.stepCanvas) {
+        this.$refs.stepCanvas.handleInsertCommand(cmd)
+      }
+    },
+    onSubTitleContextMenu(target, index, event) {
+      const arr = target === 'understanding' ? this.understandingSubTitles
+        : target === 'task' ? this.taskSubTitles
+        : this.getStepContent(this.currentStepIndex).subTitles
+      const sourceName = arr && arr[index] ? arr[index] : ''
+      this.subTitleContextMenu = {
+        visible: true,
+        x: event.clientX,
+        y: event.clientY,
+        target,
+        index,
+        sourceName
+      }
+    },
+    closeSubTitleContextMenu() {
+      this.subTitleContextMenu.visible = false
+    },
+    onDocumentClickForSubTitleMenu(e) {
+      if (!this.subTitleContextMenu.visible) return
+      const el = this.$refs.subTitleContextMenuRef
+      if (el && el.contains(e.target)) return
+      this.closeSubTitleContextMenu()
+    },
+    getSubTitleArray(target) {
+      const t = target ?? this.subTitleContextMenu?.target
+      if (t === 'understanding') return this.understandingSubTitles
+      if (t === 'task') return this.taskSubTitles
+      if (t === 'step') return this.getStepContent(this.currentStepIndex).subTitles
+      return []
+    },
+    async editSubTitle() {
+      const { target, index } = this.subTitleContextMenu
+      const arr = this.getSubTitleArray(target)
+      this.closeSubTitleContextMenu()
+      if (index < 0 || index >= arr.length) return
+      try {
+        const { value } = await this.$prompt('请输入小标题名称', '编辑小标题', {
+          confirmButtonText: '确定',
+          cancelButtonText: '取消',
+          inputValue: arr[index],
+          inputPattern: /\S+/,
+          inputErrorMessage: '请输入小标题名称'
+        })
+        if (value && value.trim()) {
+          this.$set(arr, index, value.trim())
+        }
+      } catch (_) {}
+    },
+    getTemplateBoxes(sourceName, newName, canvas) {
+      const w = canvas ? canvas.offsetWidth : 800
+      const h = canvas ? canvas.offsetHeight : 500
+      if (sourceName === '点名') return createRollCallTextBoxes(w, h)
+      if (sourceName === '意图通报') return createIntentBriefingTemplate(w, h)
+      if (sourceName === '任务规划') return createTaskPlanningTemplate(w, h)
+      if (SIMPLE_TITLE_NAMES.includes(sourceName)) return createSimpleTitleTemplate(newName, w, h)
+      if (SUB_TITLE_TEMPLATE_NAMES.includes(sourceName)) return createSubTitleTemplate(newName, w, h)
+      return []
+    },
+    async insertNewPage() {
+      const { target, index, sourceName } = this.subTitleContextMenu
+      this.closeSubTitleContextMenu()
+      if (!sourceName) return
+      const subIdx = index
+      if (target === 'task') {
+        this.$message.info('任务页暂不支持多页')
+        return
+      }
+      if (target === 'understanding') {
+        this.$nextTick(() => {
+          const canvas = this.$refs.understandingStep?.$refs?.canvas
+          const boxes = this.getTemplateBoxes(sourceName, sourceName, canvas)
+          if (this.$refs.understandingStep) {
+            this.$refs.understandingStep.addPageToSubIndex(subIdx, boxes)
+          }
+        })
+      } else if (target === 'step') {
+        const step = this.getStepContent(this.currentStepIndex)
+        const sub = step.subContents[subIdx]
+        if (!sub) return
+        ensurePagesStructure(sub)
+        const canvas = this.$refs.stepCanvas?.$refs?.canvas
+        const boxes = this.getTemplateBoxes(sourceName, sourceName, canvas)
+        sub.pages.push({ icons: [], textBoxes: [...boxes] })
+        sub.currentPageIndex = sub.pages.length - 1
+      }
+    },
+    deleteSubTitle() {
+      const { target, index } = { ...this.subTitleContextMenu }
+      this.closeSubTitleContextMenu()
+      const arr = this.getSubTitleArray(target)
+      if (index < 0 || index >= arr.length) return
+      arr.splice(index, 1)
+      if (target === 'step') {
+        const step = this.getStepContent(this.currentStepIndex)
+        if (step.subContents && step.subContents.length > index) {
+          step.subContents.splice(index, 1)
+        }
+      }
+      if (target === 'understanding') {
+        if (this.activeUnderstandingSubIndex >= arr.length && arr.length > 0) {
+          this.activeUnderstandingSubIndex = arr.length - 1
+        } else if (arr.length === 0) {
+          this.activeUnderstandingSubIndex = 0
+        } else if (this.activeUnderstandingSubIndex > index) {
+          this.activeUnderstandingSubIndex--
+        }
+      } else if (target === 'task') {
+        if (this.activeTaskSubIndex >= arr.length && arr.length > 0) {
+          this.activeTaskSubIndex = arr.length - 1
+        } else if (arr.length === 0) {
+          this.activeTaskSubIndex = 0
+        } else if (this.activeTaskSubIndex > index) {
+          this.activeTaskSubIndex--
+        }
+      } else if (target === 'step') {
+        if (this.activeStepSubIndex >= arr.length && arr.length > 0) {
+          this.activeStepSubIndex = arr.length - 1
+        } else if (arr.length === 0) {
+          this.activeStepSubIndex = 0
+        } else if (this.activeStepSubIndex > index) {
+          this.activeStepSubIndex--
+        }
+      }
     }
   }
 }
@@ -401,13 +722,15 @@ export default {
   height: 100%;
 }
 
-.overlay-content.understanding-page {
+.overlay-content.understanding-page,
+.overlay-content.step-page {
   padding: 0;
   height: 100%;
 }
 
 .task-page-body,
-.understanding-page-body {
+.understanding-page-body,
+.step-canvas-body {
   height: 100%;
 }
 
@@ -436,4 +759,36 @@ export default {
   font-size: 12px;
   color: #cbd5e1;
 }
+
+.sub-title-context-menu {
+  position: fixed;
+  z-index: 10000;
+  min-width: 120px;
+  padding: 4px 0;
+  background: #fff;
+  border-radius: 8px;
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
+  border: 1px solid rgba(0, 0, 0, 0.08);
+}
+
+.sub-title-context-menu .context-menu-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 8px 16px;
+  font-size: 14px;
+  color: #1e293b;
+  cursor: pointer;
+  transition: background 0.2s;
+}
+
+.sub-title-context-menu .context-menu-item:hover {
+  background: rgba(0, 138, 255, 0.08);
+  color: #008aff;
+}
+
+.sub-title-context-menu .context-menu-item-danger:hover {
+  background: rgba(239, 68, 68, 0.08);
+  color: #ef4444;
+}
 </style>
diff --git a/ruoyi-ui/src/views/childRoom/TaskPageContent.vue b/ruoyi-ui/src/views/childRoom/TaskPageContent.vue
index 1ff4f5b..dfaa104 100644
--- a/ruoyi-ui/src/views/childRoom/TaskPageContent.vue
+++ b/ruoyi-ui/src/views/childRoom/TaskPageContent.vue
@@ -64,23 +64,23 @@
         @mousedown="onTextBoxMouseDown(box, $event)"
       >
         <div class="textbox-drag-bar" @mousedown.stop="selectElement(box.id, $event)"></div>
-        <!-- Office 风格格式工具栏：选中时显示在文本框上方 -->
-        <div v-if="selectedId === box.id" class="textbox-format-toolbar" @mousedown.stop>
-          <el-select v-model="box.fontFamily" size="mini" placeholder="字体" class="format-font" @change="debouncedSave">
-            <el-option v-for="f in fontOptions" :key="f" :label="f" :value="f" />
-          </el-select>
-          <el-select v-model="box.fontSize" size="mini" placeholder="字号" class="format-size" @change="debouncedSave">
-            <el-option v-for="s in fontSizeOptions" :key="s" :label="String(s)" :value="s" />
-          </el-select>
-          <el-color-picker v-model="box.color" class="format-color" @change="debouncedSave" />
+        <div class="textbox-input-wrapper">
+          <div
+            v-if="box.placeholder && !box.text && focusedBoxId !== box.id"
+            class="textbox-placeholder"
+            :style="getTextBoxPlaceholderStyle(box)"
+            @mousedown="focusTextBox(box, $event)"
+          >{{ box.placeholder }}</div>
+          <div
+            class="textbox-input"
+            contenteditable="true"
+            :style="getTextBoxInputStyle(box)"
+            @focus="onTextBoxFocus(box)"
+            @blur="onTextBoxBlur(box, $event)"
+            @mousedown.stop="selectedId = box.id"
+            @contextmenu="onTextBoxContextMenu(box, $event)"
+          ></div>
         </div>
-        <div
-          class="textbox-input"
-          contenteditable="true"
-          :style="getTextBoxInputStyle(box)"
-          @blur="box.text = $event.target.innerText"
-          @mousedown.stop="selectedId = box.id"
-        ></div>
         <div class="textbox-resize-handle" v-if="selectedId === box.id">
           <div
             v-for="pos in resizeHandles"
@@ -103,6 +103,21 @@
         :style="drawingTextBoxStyle"
       ></div>
     </div>
+    <!-- 格式工具栏：仅选中文字后右键时显示，固定定位在右键位置 -->
+    <div
+      v-if="formatToolbarBox"
+      class="textbox-format-toolbar-fixed"
+      :style="{ left: formatToolbarPosition.x + 'px', top: formatToolbarPosition.y + 'px' }"
+      @mousedown.stop
+    >
+      <el-select v-model="formatToolbarBox.fontFamily" size="mini" placeholder="字体" class="format-font" @change="debouncedSave">
+        <el-option v-for="f in fontOptions" :key="f" :label="f" :value="f" />
+      </el-select>
+      <el-select v-model="formatToolbarBox.fontSize" size="mini" placeholder="字号" class="format-size" @change="debouncedSave">
+        <el-option v-for="s in fontSizeOptions" :key="s" :label="String(s)" :value="s" />
+      </el-select>
+      <el-color-picker v-model="formatToolbarBox.color" class="format-color" @change="debouncedSave" />
+    </div>
   </div>
 </template>
 
@@ -117,6 +132,8 @@ function genId() {
 const FONT_OPTIONS = ['宋体', '黑体', '微软雅黑', '楷体', '仿宋', 'Arial', 'Times New Roman', 'Verdana', 'Georgia']
 const FONT_SIZE_OPTIONS = [8, 9, 10, 11, 12, 14, 16, 18, 20, 22, 24, 26, 28, 36, 48, 72]
 const DEFAULT_FONT = { fontSize: 14, fontFamily: '微软雅黑', color: '#333333' }
+const MAIN_TITLE_ID = 'task_default_main_title'
+const SUB_TITLE_ID = 'task_default_sub_title'
 
 export default {
   name: 'TaskPageContent',
@@ -128,6 +145,10 @@ export default {
     backgroundImage: {
       type: String,
       default: null
+    },
+    taskSubTitles: {
+      type: Array,
+      default: () => []
     }
   },
   data() {
@@ -147,25 +168,40 @@ export default {
       drawStartX: 0,
       drawStartY: 0,
       drawCurrentX: 0,
-      drawCurrentY: 0
+      drawCurrentY: 0,
+      formatToolbarBoxId: null,
+      formatToolbarPosition: { x: 0, y: 0 },
+      focusedBoxId: null
     }
   },
   watch: {
     backgroundImage: { handler() { this.debouncedSave() }, immediate: false },
     icons: { handler() { this.debouncedSave() }, deep: true },
-    textBoxes: { handler() { this.debouncedSave() }, deep: true }
+    textBoxes: { handler() { this.debouncedSave() }, deep: true },
+    taskSubTitles: { handler() { this.debouncedSave() }, deep: true }
   },
   mounted() {
     this._keydownHandler = (e) => this.onKeydown(e)
+    this._clickHandler = (e) => {
+      if (this.formatToolbarBoxId && !e.target.closest('.textbox-format-toolbar-fixed')) {
+        this.formatToolbarBoxId = null
+      }
+    }
     document.addEventListener('keydown', this._keydownHandler)
-    this.loadFromRedis()
-    this.$nextTick(() => this.syncTextBoxContent())
+    document.addEventListener('click', this._clickHandler)
+    this.loadFromRedis().then(() => {
+      this.$nextTick(() => {
+        this.ensureDefaultTitleBoxes()
+        this.syncTextBoxContent()
+      })
+    })
   },
   updated() {
     this.$nextTick(() => this.syncTextBoxContent())
   },
   beforeDestroy() {
     document.removeEventListener('keydown', this._keydownHandler)
+    document.removeEventListener('click', this._clickHandler)
     if (this._saveTimer) {
       clearTimeout(this._saveTimer)
       this._saveTimer = null
@@ -173,6 +209,10 @@ export default {
     this.saveToRedis()
   },
   computed: {
+    formatToolbarBox() {
+      if (!this.formatToolbarBoxId) return null
+      return this.textBoxes.find(t => t.id === this.formatToolbarBoxId) || null
+    },
     canvasStyle() {
       const style = {}
       if (this.backgroundImage) {
@@ -198,6 +238,10 @@ export default {
   },
   methods: {
     handleInsertCommand(cmd) {
+      if (cmd === 'removeBackground') {
+        this.$emit('background-change', null)
+        return
+      }
       this.insertMode = cmd
       if (cmd === 'background') {
         this.$refs.bgInput.value = ''
@@ -301,6 +345,32 @@ export default {
       if (e.target.closest('.textbox-input')) return
       this.selectElement(box.id, e)
     },
+    focusTextBox(box, e) {
+      e.preventDefault()
+      e.stopPropagation()
+      this.focusedBoxId = box.id
+      this.selectedId = box.id
+      this.$nextTick(() => {
+        const wrapper = e.target.closest('.textbox-input-wrapper')
+        const input = wrapper && wrapper.querySelector('.textbox-input')
+        if (input) input.focus()
+      })
+    },
+    onTextBoxFocus(box) {
+      this.focusedBoxId = box.id
+    },
+    onTextBoxBlur(box, e) {
+      box.text = (e.target.innerText || '').trim()
+      this.focusedBoxId = null
+    },
+    onTextBoxContextMenu(box, e) {
+      const sel = window.getSelection()
+      const hasSelection = sel && sel.toString().trim().length > 0
+      if (!hasSelection) return
+      e.preventDefault()
+      this.formatToolbarBoxId = box.id
+      this.formatToolbarPosition = { x: e.clientX, y: e.clientY }
+    },
     selectElement(id, e) {
       this.selectedId = id
       const icon = this.icons.find(i => i.id === id)
@@ -467,6 +537,13 @@ export default {
         color: box.color || DEFAULT_FONT.color
       }
     },
+    getTextBoxPlaceholderStyle(box) {
+      return {
+        fontSize: (box.fontSize || DEFAULT_FONT.fontSize) + 'px',
+        fontFamily: box.fontFamily || DEFAULT_FONT.fontFamily,
+        color: '#999'
+      }
+    },
     deleteIcon(id) {
       const idx = this.icons.findIndex(i => i.id === id)
       if (idx >= 0) this.icons.splice(idx, 1)
@@ -482,6 +559,45 @@ export default {
         }
       })
     },
+    ensureDefaultTitleBoxes() {
+      const canvas = this.$refs.canvas
+      const w = canvas ? canvas.offsetWidth : 800
+      const h = canvas ? canvas.offsetHeight : 500
+      const hasMain = this.textBoxes.some(t => t.id === MAIN_TITLE_ID)
+      const hasSub = this.textBoxes.some(t => t.id === SUB_TITLE_ID)
+      if (!hasMain) {
+        this.textBoxes.unshift({
+          id: MAIN_TITLE_ID,
+          x: Math.max(0, (w - 600) / 2),
+          y: Math.max(0, (h - 180) / 2 - 55),
+          width: 600,
+          height: 90,
+          text: '',
+          placeholder: '在此输入大标题',
+          rotation: 0,
+          fontSize: 56,
+          fontFamily: DEFAULT_FONT.fontFamily,
+          color: DEFAULT_FONT.color
+        })
+      }
+      if (!hasSub) {
+        const insertIdx = this.textBoxes.findIndex(t => t.id === MAIN_TITLE_ID)
+        const at = insertIdx >= 0 ? insertIdx + 1 : 0
+        this.textBoxes.splice(at, 0, {
+          id: SUB_TITLE_ID,
+          x: Math.max(0, (w - 500) / 2),
+          y: Math.max(0, (h - 180) / 2 + 55),
+          width: 500,
+          height: 52,
+          text: '',
+          placeholder: '在此输入副标题',
+          rotation: 0,
+          fontSize: 20,
+          fontFamily: DEFAULT_FONT.fontFamily,
+          color: DEFAULT_FONT.color
+        })
+      }
+    },
     async loadFromRedis() {
       if (this.roomId == null) return
       try {
@@ -508,22 +624,31 @@ export default {
           }))
         }
         if (raw.textBoxes && Array.isArray(raw.textBoxes)) {
-          this.textBoxes = raw.textBoxes.map(t => ({
-            id: t.id || genId(),
-            x: Number(t.x) || 0,
-            y: Number(t.y) || 0,
-            width: Number(t.width) || 100,
-            height: Number(t.height) || 60,
-            text: String(t.text || ''),
-            rotation: Number(t.rotation) || 0,
-            fontSize: Number(t.fontSize) || DEFAULT_FONT.fontSize,
-            fontFamily: t.fontFamily || DEFAULT_FONT.fontFamily,
-            color: t.color || DEFAULT_FONT.color
-          }))
+          this.textBoxes = raw.textBoxes.map(t => {
+            const id = t.id || genId()
+            const isMain = id === MAIN_TITLE_ID
+            const isSub = id === SUB_TITLE_ID
+            return {
+              id,
+              x: Number(t.x) || 0,
+              y: Number(t.y) || 0,
+              width: Number(t.width) || (isMain ? 600 : isSub ? 500 : 100),
+              height: Number(t.height) || (isMain ? 90 : isSub ? 52 : 60),
+              text: String(t.text || ''),
+              placeholder: isMain ? '在此输入大标题' : isSub ? '在此输入副标题' : undefined,
+              rotation: Number(t.rotation) || 0,
+              fontSize: Number(t.fontSize) || (isMain ? 56 : isSub ? 20 : DEFAULT_FONT.fontSize),
+              fontFamily: t.fontFamily || DEFAULT_FONT.fontFamily,
+              color: t.color || DEFAULT_FONT.color
+            }
+          })
         }
         if (raw.background) {
           this.$emit('background-change', raw.background)
         }
+        if (raw.taskSubTitles && Array.isArray(raw.taskSubTitles)) {
+          this.$emit('task-sub-titles-change', raw.taskSubTitles)
+        }
       } catch (e) {
         console.warn('TaskPage loadFromRedis failed:', e)
       }
@@ -548,11 +673,13 @@ export default {
           width: t.width,
           height: t.height,
           text: t.text || '',
+          placeholder: t.placeholder || undefined,
           rotation: t.rotation || 0,
           fontSize: t.fontSize || DEFAULT_FONT.fontSize,
           fontFamily: t.fontFamily || DEFAULT_FONT.fontFamily,
           color: t.color || DEFAULT_FONT.color
-        }))
+        })),
+        taskSubTitles: this.taskSubTitles || []
       }
       saveTaskPageData({
         roomId: this.roomId,
@@ -793,32 +920,24 @@ export default {
 }
 
 
-/* Office 风格格式工具栏：选中文本框时显示在上方 */
-.textbox-format-toolbar {
-  position: absolute;
-  bottom: 100%;
-  left: 0;
-  margin-bottom: 4px;
+/* Office 风格格式工具栏：仅选中文字右键时显示，固定定位在右键位置 */
+.textbox-format-toolbar-fixed {
+  position: fixed;
   display: flex;
   align-items: center;
   gap: 6px;
-  padding: 4px 8px;
+  padding: 6px 10px;
   background: #fff;
   border: 1px solid #ddd;
   border-radius: 6px;
-  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
-  z-index: 20;
-}
-.format-font {
-  width: 120px;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+  z-index: 10000;
+  margin-top: 4px;
 }
-.format-size {
-  width: 70px;
-}
-.format-color {
-  vertical-align: middle;
-}
-.format-color ::v-deep .el-color-picker__trigger {
+.textbox-format-toolbar-fixed .format-font { width: 120px; }
+.textbox-format-toolbar-fixed .format-size { width: 70px; }
+.textbox-format-toolbar-fixed .format-color { vertical-align: middle; }
+.textbox-format-toolbar-fixed .format-color ::v-deep .el-color-picker__trigger {
   width: 24px;
   height: 24px;
   padding: 2px;
@@ -834,12 +953,35 @@ export default {
   background: transparent;
 }
 
-.textbox-input {
+.textbox-input-wrapper {
   position: absolute;
   top: 8px;
   left: 0;
   right: 0;
   bottom: 0;
+}
+
+.textbox-placeholder {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  padding: 8px;
+  outline: none;
+  overflow: hidden;
+  background: transparent;
+  color: #999;
+  cursor: text;
+  pointer-events: auto;
+}
+
+.textbox-input {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
   padding: 8px;
   font-size: 14px;
   outline: none;
@@ -847,6 +989,10 @@ export default {
   background: transparent;
   color: #333;
 }
+.textbox-input::selection {
+  background: #c8c8c8;
+  color: inherit;
+}
 
 .drawing-textbox {
   position: absolute;
diff --git a/ruoyi-ui/src/views/childRoom/UnderstandingStepContent.vue b/ruoyi-ui/src/views/childRoom/UnderstandingStepContent.vue
index d46454c..930d6ca 100644
--- a/ruoyi-ui/src/views/childRoom/UnderstandingStepContent.vue
+++ b/ruoyi-ui/src/views/childRoom/UnderstandingStepContent.vue
@@ -1,5 +1,15 @@
 <template>
   <div class="understanding-step-content">
+    <!-- 翻页控件：多页时显示 -->
+    <div v-if="currentPageCount > 1" class="pagination-bar">
+      <el-button size="mini" :disabled="!canPrevPage" @click="prevPage">
+        <i class="el-icon-arrow-left"></i> 上一页
+      </el-button>
+      <span class="page-indicator">{{ currentPageIndex + 1 }} / {{ currentPageCount }}</span>
+      <el-button size="mini" :disabled="!canNextPage" @click="nextPage">
+        下一页 <i class="el-icon-arrow-right"></i>
+      </el-button>
+    </div>
     <input
       ref="bgInput"
       type="file"
@@ -64,23 +74,23 @@
         @mousedown="onTextBoxMouseDown(box, $event)"
       >
         <div class="textbox-drag-bar" @mousedown.stop="selectElement(box.id, $event)"></div>
-        <!-- Office 风格格式工具栏 -->
-        <div v-if="selectedId === box.id" class="textbox-format-toolbar" @mousedown.stop>
-          <el-select v-model="box.fontFamily" size="mini" placeholder="字体" class="format-font">
-            <el-option v-for="f in fontOptions" :key="f" :label="f" :value="f" />
-          </el-select>
-          <el-select v-model="box.fontSize" size="mini" placeholder="字号" class="format-size">
-            <el-option v-for="s in fontSizeOptions" :key="s" :label="String(s)" :value="s" />
-          </el-select>
-          <el-color-picker v-model="box.color" class="format-color" />
+        <div class="textbox-input-wrapper">
+          <div
+            v-if="box.placeholder && !box.text && focusedBoxId !== box.id"
+            class="textbox-placeholder"
+            :style="getTextBoxPlaceholderStyle(box)"
+            @mousedown="focusTextBox(box, $event)"
+          >{{ box.placeholder }}</div>
+          <div
+            class="textbox-input"
+            contenteditable="true"
+            :style="getTextBoxInputStyle(box)"
+            @focus="onTextBoxFocus(box)"
+            @blur="onTextBoxBlur(box, $event)"
+            @mousedown.stop="selectedId = box.id"
+            @contextmenu="onTextBoxContextMenu(box, $event)"
+          ></div>
         </div>
-        <div
-          class="textbox-input"
-          contenteditable="true"
-          :style="getTextBoxInputStyle(box)"
-          @blur="box.text = $event.target.innerText"
-          @mousedown.stop="selectedId = box.id"
-        ></div>
         <div class="textbox-resize-handle" v-if="selectedId === box.id">
           <div
             v-for="pos in resizeHandles"
@@ -103,10 +113,28 @@
         :style="drawingTextBoxStyle"
       ></div>
     </div>
+    <!-- 格式工具栏：仅选中文字右键时显示 -->
+    <div
+      v-if="formatToolbarBox"
+      class="textbox-format-toolbar-fixed"
+      :style="{ left: formatToolbarPosition.x + 'px', top: formatToolbarPosition.y + 'px' }"
+      @mousedown.stop
+    >
+      <el-select v-model="formatToolbarBox.fontFamily" size="mini" placeholder="字体" class="format-font">
+        <el-option v-for="f in fontOptions" :key="f" :label="f" :value="f" />
+      </el-select>
+      <el-select v-model="formatToolbarBox.fontSize" size="mini" placeholder="字号" class="format-size">
+        <el-option v-for="s in fontSizeOptions" :key="s" :label="String(s)" :value="s" />
+      </el-select>
+      <el-color-picker v-model="formatToolbarBox.color" class="format-color" />
+    </div>
   </div>
 </template>
 
 <script>
+import { createRollCallTextBoxes, createSubTitleTemplate, SUB_TITLE_TEMPLATE_NAMES } from './rollCallTemplate'
+import { getPageContent, createEmptySubContent, ensurePagesStructure } from './subContentPages'
+
 let idCounter = 0
 function genId() {
   return 'el_' + (++idCounter) + '_' + Date.now()
@@ -126,6 +154,10 @@ export default {
     activeSubIndex: {
       type: Number,
       default: 0
+    },
+    subTitles: {
+      type: Array,
+      default: () => ['点名', '任务目标', '自身任务', '对接任务']
     }
   },
   data() {
@@ -133,10 +165,10 @@ export default {
       fontOptions: FONT_OPTIONS,
       fontSizeOptions: FONT_SIZE_OPTIONS,
       subContents: [
-        { icons: [], textBoxes: [] },
-        { icons: [], textBoxes: [] },
-        { icons: [], textBoxes: [] },
-        { icons: [], textBoxes: [] }
+        createEmptySubContent(),
+        createEmptySubContent(),
+        createEmptySubContent(),
+        createEmptySubContent()
       ],
       insertMode: null,
       pendingIconImage: null,
@@ -147,15 +179,47 @@ export default {
       drawStartX: 0,
       drawStartY: 0,
       drawCurrentX: 0,
-      drawCurrentY: 0
+      drawCurrentY: 0,
+      formatToolbarBoxId: null,
+      formatToolbarPosition: { x: 0, y: 0 },
+      focusedBoxId: null
     }
   },
   computed: {
+    formatToolbarBox() {
+      if (!this.formatToolbarBoxId) return null
+      const boxes = this.currentTextBoxes
+      return boxes.find(t => t.id === this.formatToolbarBoxId) || null
+    },
+    currentSubContent() {
+      return this.subContents[this.activeSubIndex]
+    },
+    currentPage() {
+      return getPageContent(this.currentSubContent)
+    },
     currentIcons() {
-      return this.subContents[this.activeSubIndex]?.icons || []
+      return this.currentPage?.icons || []
     },
     currentTextBoxes() {
-      return this.subContents[this.activeSubIndex]?.textBoxes || []
+      return this.currentPage?.textBoxes || []
+    },
+    currentPageCount() {
+      const sc = this.currentSubContent
+      if (!sc) return 0
+      ensurePagesStructure(sc)
+      return sc.pages?.length || 0
+    },
+    currentPageIndex() {
+      const sc = this.currentSubContent
+      if (!sc) return 0
+      ensurePagesStructure(sc)
+      return sc.currentPageIndex || 0
+    },
+    canPrevPage() {
+      return this.currentPageIndex > 0
+    },
+    canNextPage() {
+      return this.currentPageIndex < this.currentPageCount - 1
     },
     canvasStyle() {
       const style = {}
@@ -183,21 +247,51 @@ export default {
   watch: {
     activeSubIndex() {
       this.selectedId = null
+      this.$nextTick(() => {
+        this.ensureRollCallTextBoxes()
+        this.ensureSubTitleTemplate()
+      })
+    },
+    subTitles: {
+      handler(titles) {
+        while (this.subContents.length < (titles?.length || 0)) {
+          this.subContents.push(createEmptySubContent())
+        }
+        while (this.subContents.length > (titles?.length || 0)) {
+          this.subContents.pop()
+        }
+      },
+      immediate: true
     }
   },
   mounted() {
     this._keydownHandler = (e) => this.onKeydown(e)
+    this._clickHandler = (e) => {
+      if (this.formatToolbarBoxId && !e.target.closest('.textbox-format-toolbar-fixed')) {
+        this.formatToolbarBoxId = null
+      }
+    }
     document.addEventListener('keydown', this._keydownHandler)
-    this.$nextTick(() => this.syncTextBoxContent())
+    document.addEventListener('click', this._clickHandler)
+    this.$nextTick(() => {
+      this.ensureRollCallTextBoxes()
+      this.ensureSubTitleTemplate()
+      this.syncTextBoxContent()
+    })
   },
   updated() {
     this.$nextTick(() => this.syncTextBoxContent())
   },
   beforeDestroy() {
     document.removeEventListener('keydown', this._keydownHandler)
+    document.removeEventListener('click', this._clickHandler)
   },
   methods: {
     handleInsertCommand(cmd) {
+      if (cmd === 'removeBackground') {
+        this.$emit('background-change', null)
+        return
+      }
       this.insertMode = cmd
       if (cmd === 'background') {
         this.$refs.bgInput.value = ''
@@ -234,8 +328,8 @@ export default {
         const rect = this.$refs.canvas.getBoundingClientRect()
         const x = e.clientX - rect.left
         const y = e.clientY - rect.top
-        const sub = this.subContents[this.activeSubIndex]
-        sub.icons.push({
+        const page = this.currentPage
+        if (page) page.icons.push({
           id: genId(),
           x,
           y,
@@ -280,8 +374,8 @@ export default {
         const y = Math.min(this.drawStartY, this.drawCurrentY)
         const w = Math.max(Math.abs(this.drawCurrentX - this.drawStartX), 20)
         const h = Math.max(Math.abs(this.drawCurrentY - this.drawStartY), 20)
-        const sub = this.subContents[this.activeSubIndex]
-        sub.textBoxes.push({
+        const page = this.currentPage
+        if (page) page.textBoxes.push({
           id: genId(),
           x,
           y,
@@ -303,6 +397,14 @@ export default {
       if (e.target.closest('.textbox-input')) return
       this.selectElement(box.id, e)
     },
+    onTextBoxContextMenu(box, e) {
+      const sel = window.getSelection()
+      const hasSelection = sel && sel.toString().trim().length > 0
+      if (!hasSelection) return
+      e.preventDefault()
+      this.formatToolbarBoxId = box.id
+      this.formatToolbarPosition = { x: e.clientX, y: e.clientY }
+    },
     selectElement(id, e) {
       this.selectedId = id
       const icon = this.currentIcons.find(i => i.id === id)
@@ -463,16 +565,87 @@ export default {
       }
     },
     getTextBoxInputStyle(box) {
-      return {
+      const style = {
         fontSize: (box.fontSize || DEFAULT_FONT.fontSize) + 'px',
         fontFamily: box.fontFamily || DEFAULT_FONT.fontFamily,
         color: box.color || DEFAULT_FONT.color
       }
+      if (box.fontWeight) style.fontWeight = box.fontWeight
+      return style
+    },
+    getTextBoxPlaceholderStyle(box) {
+      const style = {
+        fontSize: (box.fontSize || DEFAULT_FONT.fontSize) + 'px',
+        fontFamily: box.fontFamily || DEFAULT_FONT.fontFamily,
+        color: '#999'
+      }
+      if (box.fontWeight) style.fontWeight = box.fontWeight
+      return style
+    },
+    focusTextBox(box, e) {
+      e.preventDefault()
+      e.stopPropagation()
+      this.focusedBoxId = box.id
+      this.selectedId = box.id
+      this.$nextTick(() => {
+        const wrapper = e.target.closest('.textbox-input-wrapper')
+        const input = wrapper && wrapper.querySelector('.textbox-input')
+        if (input) input.focus()
+      })
+    },
+    onTextBoxFocus(box) {
+      this.focusedBoxId = box.id
+    },
+    onTextBoxBlur(box, e) {
+      box.text = (e.target.innerText || '').trim()
+      this.focusedBoxId = null
+    },
+    ensureRollCallTextBoxes() {
+      const subTitle = this.subTitles[this.activeSubIndex]
+      if (subTitle !== '点名') return
+      const page = this.currentPage
+      if (!page || !page.textBoxes || page.textBoxes.length > 0) return
+      const canvas = this.$refs.canvas
+      const w = canvas ? canvas.offsetWidth : 800
+      const h = canvas ? canvas.offsetHeight : 500
+      page.textBoxes.push(...createRollCallTextBoxes(w, h))
+    },
+    ensureSubTitleTemplate() {
+      const subTitle = this.subTitles[this.activeSubIndex]
+      if (!subTitle || subTitle === '点名' || !SUB_TITLE_TEMPLATE_NAMES.includes(subTitle)) return
+      const page = this.currentPage
+      if (!page || !page.textBoxes || page.textBoxes.length > 0) return
+      const canvas = this.$refs.canvas
+      const w = canvas ? canvas.offsetWidth : 800
+      const h = canvas ? canvas.offsetHeight : 500
+      page.textBoxes.push(...createSubTitleTemplate(subTitle, w, h))
+    },
+    addPageToSubIndex(index, boxes) {
+      const sub = this.subContents[index]
+      if (!sub) return
+      ensurePagesStructure(sub)
+      sub.pages.push({ icons: [], textBoxes: boxes || [] })
+      sub.currentPageIndex = sub.pages.length - 1
+    },
+    prevPage() {
+      const sub = this.currentSubContent
+      if (!sub || !this.canPrevPage) return
+      ensurePagesStructure(sub)
+      sub.currentPageIndex = Math.max(0, (sub.currentPageIndex || 0) - 1)
+      this.selectedId = null
+    },
+    nextPage() {
+      const sub = this.currentSubContent
+      if (!sub || !this.canNextPage) return
+      ensurePagesStructure(sub)
+      sub.currentPageIndex = Math.min((sub.pages?.length || 1) - 1, (sub.currentPageIndex || 0) + 1)
+      this.selectedId = null
     },
     deleteIcon(id) {
-      const sub = this.subContents[this.activeSubIndex]
-      const idx = sub.icons.findIndex(i => i.id === id)
-      if (idx >= 0) sub.icons.splice(idx, 1)
+      const page = this.currentPage
+      if (!page) return
+      const idx = page.icons.findIndex(i => i.id === id)
+      if (idx >= 0) page.icons.splice(idx, 1)
       if (this.selectedId === id) this.selectedId = null
     },
     syncTextBoxContent() {
@@ -487,9 +660,10 @@ export default {
       })
     },
     deleteTextBox(id) {
-      const sub = this.subContents[this.activeSubIndex]
-      const idx = sub.textBoxes.findIndex(t => t.id === id)
-      if (idx >= 0) sub.textBoxes.splice(idx, 1)
+      const page = this.currentPage
+      if (!page) return
+      const idx = page.textBoxes.findIndex(t => t.id === id)
+      if (idx >= 0) page.textBoxes.splice(idx, 1)
       if (this.selectedId === id) this.selectedId = null
     },
     onKeydown(e) {
@@ -527,6 +701,22 @@ export default {
 </script>
 
 <style scoped>
+.pagination-bar {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 16px;
+  padding: 8px 0;
+  background: rgba(0, 138, 255, 0.06);
+  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
+  flex-shrink: 0;
+}
+.pagination-bar .page-indicator {
+  font-size: 13px;
+  color: #64748b;
+  min-width: 60px;
+  text-align: center;
+}
 .understanding-step-content {
   display: flex;
   flex-direction: column;
@@ -709,26 +899,24 @@ export default {
   pointer-events: auto;
 }
 
-/* Office 风格格式工具栏 */
-.textbox-format-toolbar {
-  position: absolute;
-  bottom: 100%;
-  left: 0;
-  margin-bottom: 4px;
+/* 格式工具栏：仅选中文字右键时显示 */
+.textbox-format-toolbar-fixed {
+  position: fixed;
   display: flex;
   align-items: center;
   gap: 6px;
-  padding: 4px 8px;
+  padding: 6px 10px;
   background: #fff;
   border: 1px solid #ddd;
   border-radius: 6px;
-  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
-  z-index: 20;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+  z-index: 10000;
+  margin-top: 4px;
 }
-.format-font { width: 120px; }
-.format-size { width: 70px; }
-.format-color { vertical-align: middle; }
-.format-color ::v-deep .el-color-picker__trigger {
+.textbox-format-toolbar-fixed .format-font { width: 120px; }
+.textbox-format-toolbar-fixed .format-size { width: 70px; }
+.textbox-format-toolbar-fixed .format-color { vertical-align: middle; }
+.textbox-format-toolbar-fixed .format-color ::v-deep .el-color-picker__trigger {
   width: 24px;
   height: 24px;
   padding: 2px;
@@ -744,12 +932,35 @@ export default {
   background: transparent;
 }
 
-.textbox-input {
+.textbox-input-wrapper {
   position: absolute;
   top: 8px;
   left: 0;
   right: 0;
   bottom: 0;
+}
+
+.textbox-placeholder {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  padding: 8px;
+  outline: none;
+  overflow: hidden;
+  background: transparent;
+  color: #999;
+  cursor: text;
+  pointer-events: auto;
+}
+
+.textbox-input {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
   padding: 8px;
   font-size: 14px;
   outline: none;
@@ -757,6 +968,10 @@ export default {
   background: transparent;
   color: #333;
 }
+.textbox-input::selection {
+  background: #c8c8c8;
+  color: inherit;
+}
 
 .drawing-textbox {
   position: absolute;