diff --git a/Html/apps/static/css/lesson_setting.css b/Html/apps/static/css/lesson_setting.css
new file mode 100644
index 0000000..fe36c45
--- /dev/null
+++ b/Html/apps/static/css/lesson_setting.css
@@ -0,0 +1,26 @@
+/* 开启排序模式时的卡片态与反馈 */
+#outline-tree.reorder-mode li.lvl2,
+#outline-tree.reorder-mode li.lvl3 {
+  border: 2px solid #ddd;
+  border-radius: 10px;
+  background: #fff;
+  padding: 6px 10px;
+  margin: 6px 0;
+  cursor: grab;
+  transition: box-shadow .2s, border-color .2s;
+}
+#outline-tree.reorder-mode li.lvl2:hover,
+#outline-tree.reorder-mode li.lvl3:hover {
+  border-color: #4CAF50;
+  box-shadow: 0 2px 6px rgba(0,0,0,.08);
+}
+#outline-tree.reorder-mode li.lvl2:active,
+#outline-tree.reorder-mode li.lvl3:active {
+  cursor: grabbing;
+}
+
+#outline-tree li.dragging { opacity: .6; }
+
+/* 放置提示线：在目标元素顶部/底部出现内阴影 */
+#outline-tree li.drop-indicator-top    { box-shadow: inset 0 3px 0 0 #4CAF50; }
+#outline-tree li.drop-indicator-bottom { box-shadow: inset 0 -3px 0 0 #4CAF50; }
diff --git a/Html/apps/static/js/lesson.js b/Html/apps/static/js/lesson.js
index e0e839b..9a75150 100644
--- a/Html/apps/static/js/lesson.js
+++ b/Html/apps/static/js/lesson.js
@@ -609,4 +609,446 @@ function loadStepToEditors(phaseText, stepText) {
   - 维度B：...
   `
   };
-  
\ No newline at end of file
+  
+
+
+
+
+
+
+
+
+
+
+// 假设已存在 parseHeadings(md) => {lines, tokens([{level,text,start,end}])}
+
+function sliceByRange(lines, start, end) {
+  return lines.slice(start, end + 1).join('\n');
+}
+
+// 取整个文档的“主题(#)”区块与其后所有 ## 阶段 token
+function splitDoc(md) {
+  const parsed = parseHeadings(md);
+  const { lines, tokens } = parsed;
+  const h1 = tokens.find(t => t.level === 1);
+  // 文首到第一个##之前（含 # 与其正文）保留为 prelude
+  const firstPhase = tokens.find(t => t.level === 2);
+  const preludeEnd = firstPhase ? firstPhase.start - 1 : lines.length - 1;
+  const prelude = sliceByRange(lines, 0, Math.max(0, preludeEnd));
+  const phases = tokens.filter(t => t.level === 2);
+  return { lines, tokens, prelude, phases };
+}
+
+// 取某个“## 阶段”的完整文本（到下一个 ## 之前）
+function getPhaseBlock(lines, phaseToken) {
+  return sliceByRange(lines, phaseToken.start, phaseToken.end);
+}
+
+// 解析阶段块内的 ### 步骤；返回 {intro, steps: [{name, start,end,text}], order}
+function analyzePhaseBlock(phaseBlock) {
+  const p = parseHeadings(phaseBlock);
+  const { lines, tokens } = p;
+  const h2 = tokens.find(t => t.level === 2); // 本块第一行
+  const steps = tokens.filter(t => t.level === 3);
+  // intro: 从 h2 之后到第一个 ### 之前的正文
+  const introStart = (h2 ? h2.start + 1 : 0);
+  const introEnd = steps.length ? steps[0].start - 1 : lines.length - 1;
+  const intro = introStart <= introEnd ? sliceByRange(lines, introStart, introEnd) : '';
+
+  const stepObjs = steps.map(st => ({
+    name: st.text,
+    start: st.start,
+    end: st.end,
+    text: sliceByRange(lines, st.start, st.end)
+  }));
+  return { intro, steps: stepObjs };
+}
+
+// 针对“整篇文档”建立一个全局的 step 索引（phaseName::stepName -> text）
+function buildGlobalStepIndex(lines, tokens) {
+  const res = new Map();
+  const phases = tokens.filter(t => t.level === 2);
+  for (let i = 0; i < phases.length; i++) {
+    const ph = phases[i];
+    const phNextStart = (i + 1 < phases.length) ? phases[i+1].start : lines.length;
+    // 该阶段内的所有 ###：
+    const steps = tokens.filter(t => t.level === 3 && t.start > ph.start && t.start < phNextStart);
+    for (const st of steps) {
+      const key = `${ph.text}||${st.text}`;
+      res.set(key, sliceByRange(lines, st.start, st.end));
+    }
+  }
+  return res;
+}
+
+
+  // ===== 选择器与小工具 =====
+const treeEl = document.getElementById('outline-tree');
+const toggleOutlineBtn = document.getElementById('toggle-outline-reorder');
+
+const isLvl1 = el => el.classList?.contains('lvl1');
+const isLvl2 = el => el.classList?.contains('lvl2');
+const isLvl3 = el => el.classList?.contains('lvl3');
+const isBtn  = el => el.tagName === 'BUTTON'; // 新增阶段/步骤的按钮
+// 取一个阶段块（从 phaseLi 开始，到下一个 lvl2 之前的所有节点）
+function blockOfPhase(phaseLi) {
+  const block = [phaseLi];
+  let n = phaseLi.nextElementSibling;
+  while (n && !isLvl2(n)) {
+    block.push(n);
+    n = n.nextElementSibling;
+  }
+  return block;
+}
+
+// 取阶段块最后一个节点（可能是最后一个 lvl3；若无 lvl3 则是 phaseLi 自己）
+function lastNodeOfPhase(phaseLi) {
+  let last = phaseLi;
+  let n = phaseLi.nextElementSibling;
+  while (n && !isLvl2(n)) {
+    last = n;
+    n = n.nextElementSibling;
+  }
+  return last;
+}
+
+/**
+ * 把一组 nodes（一个完整阶段块）移动到 targetPhaseLi 的前/后
+ * place: 'before' | 'after'
+ * 用占位符避免 DOM 移动时锚点错位
+ */
+function movePhaseBlock(nodes, targetPhaseLi, place = 'before') {
+  const parent = targetPhaseLi.parentNode;
+  if (place === 'before') {
+    const marker = document.createComment('phase-insert-before');
+    parent.insertBefore(marker, targetPhaseLi);     // 在目标前放标记
+    nodes.forEach(node => parent.insertBefore(node, marker));
+    parent.removeChild(marker);
+  } else {
+    // after：要放在“目标阶段块最后一个节点”之后
+    const last = lastNodeOfPhase(targetPhaseLi);
+    const marker = document.createComment('phase-insert-after');
+    parent.insertBefore(marker, last.nextSibling);  // 在目标块之后放标记
+    nodes.forEach(node => parent.insertBefore(node, marker));
+    parent.removeChild(marker);
+  }
+}
+function getAllItems() {
+  // 只取直接子节点里的 LI（忽略按钮等）
+  return Array.from(treeEl.children).filter(el => el.tagName === 'LI');
+}
+
+function prevLvl2Of(el) {
+  // 从当前节点向上找前一个 lvl2（步骤所属的阶段）
+  let p = el.previousElementSibling;
+  while (p) {
+    if (isLvl2(p)) return p;
+    p = p.previousElementSibling;
+  }
+  return null;
+}
+
+function blockOfPhase(phaseLi) {
+  // 返回从 phaseLi 开始直到下一个 lvl2（不含）的所有“块内元素”
+  const block = [phaseLi];
+  let n = phaseLi.nextElementSibling;
+  while (n && !isLvl2(n)) {
+    // 包括 lvl3（步骤）以及紧跟其后的“新增步骤按钮”（若你也插在 ul 里）
+    block.push(n);
+    n = n.nextElementSibling;
+  }
+  return block;
+}
+
+function clearIndicators() {
+  treeEl.querySelectorAll('.drop-indicator-top, .drop-indicator-bottom')
+    .forEach(el => el.classList.remove('drop-indicator-top', 'drop-indicator-bottom'));
+}
+
+function removeDragging() {
+  treeEl.querySelectorAll('.dragging').forEach(el => el.classList.remove('dragging'));
+}
+
+// ===== 排序模式开关 =====
+toggleOutlineBtn.addEventListener('click', () => {
+  const active = toggleOutlineBtn.getAttribute('aria-pressed') === 'true';
+  active ? disableOutlineReorder() : enableOutlineReorder();
+});
+
+function enableOutlineReorder() {
+  toggleOutlineBtn.setAttribute('aria-pressed', 'true');
+  treeEl.classList.add('reorder-mode');
+
+  // lvl2/lvl3 可拖拽；lvl1（主题）不可拖
+  getAllItems().forEach(li => {
+    if (isLvl1(li) || isBtn(li)) return;
+    li.draggable = true;
+    li.addEventListener('dragstart', onDragStart);
+    li.addEventListener('dragend', onDragEnd);
+    li.addEventListener('dragover', onDragOver);
+    li.addEventListener('dragleave', onDragLeave);
+    li.addEventListener('drop', onDrop);
+  });
+}
+
+function disableOutlineReorder() {
+  toggleOutlineBtn.setAttribute('aria-pressed', 'false');
+  treeEl.classList.remove('reorder-mode');
+
+  getAllItems().forEach(li => {
+    li.draggable = false;
+    li.removeEventListener('dragstart', onDragStart);
+    li.removeEventListener('dragend', onDragEnd);
+    li.removeEventListener('dragover', onDragOver);
+    li.removeEventListener('dragleave', onDragLeave);
+    li.removeEventListener('drop', onDrop);
+    li.classList.remove('dragging', 'drop-indicator-top', 'drop-indicator-bottom');
+  });
+
+  // （可选）退出时持久化顺序
+  // persistOutlineOrderFromDOM();
+}
+
+// ===== DnD 状态 =====
+let lessen_draggingEl = null;     // 实际被拖的 “单个 li”（lvl2 或 lvl3）
+let lessen_draggingType = null;   // 'phase' | 'step'
+let lessen_draggingBlock = null;  // 若拖的是 lvl2，这里是整个“阶段块”的节点数组
+
+function onDragStart(e) {
+  // 不让按钮参与拖拽
+  if (isBtn(e.target)) { e.preventDefault(); return; }
+
+  lessen_draggingEl = this;
+  lessen_draggingType = isLvl2(this) ? 'phase' : 'step';
+  this.classList.add('dragging');
+  e.dataTransfer.effectAllowed = 'move';
+  e.dataTransfer.setData('text/plain', this.textContent.trim());
+
+  if (lessen_draggingType === 'phase') {
+    lessen_draggingBlock = blockOfPhase(this); // 包含 phase + 其后的所有 lvl3/按钮
+  } else {
+    lessen_draggingBlock = null;
+  }
+}
+
+function onDragEnd() {
+  removeDragging();
+  clearIndicators();
+  lessen_draggingEl = null;
+  lessen_draggingType = null;
+  lessen_draggingBlock = null;
+}
+
+function onDragOver(e) {
+  e.preventDefault();
+  if (!lessen_draggingEl || this === lessen_draggingEl) return;
+
+  clearIndicators();
+
+  // 仅在合法组合时显示指示
+  if (lessen_draggingType === 'phase') {
+    if (!isLvl2(this)) return; // 关键：phase 只对 lvl2 生效
+  } else if (lessen_draggingType === 'step') {
+    if (!isLvl3(this)) return; // 关键：step 只对 lvl3 生效
+  } else {
+    return;
+  }
+
+  const rect = this.getBoundingClientRect();
+  const before = e.clientY < rect.top + rect.height / 2;
+  this.classList.add(before ? 'drop-indicator-top' : 'drop-indicator-bottom');
+}
+function onDragLeave() {
+  this.classList.remove('drop-indicator-top', 'drop-indicator-bottom');
+}
+
+function onDrop(e) {
+  e.preventDefault();
+  if (!lessen_draggingEl || this === lessen_draggingEl) return;
+
+  const rect = this.getBoundingClientRect();
+  const before = e.clientY < rect.top + rect.height / 2;
+
+  if (lessen_draggingType === 'phase') {
+    // ⭐ 仅允许丢在 lvl2 上；丢在 lvl3 直接忽略
+    if (!isLvl2(this)) return;
+    const nodes = lessen_draggingBlock || [lessen_draggingEl];
+
+    if (before) {
+      // 插到目标 lvl2 前
+      movePhaseBlock(nodes, this, 'before');
+    } else {
+      // 插到目标“阶段块的最后一个节点”之后
+      movePhaseBlock(nodes, this, 'after');
+    }
+
+  } else if (lessen_draggingType === 'step') {
+    // ⭐ 仅允许丢在 lvl3 上；丢在 lvl2（阶段）不触发步骤重排
+    if (!isLvl3(this)) return;
+
+    const parent = treeEl;
+    if (before) parent.insertBefore(lessen_draggingEl, this);
+    else parent.insertBefore(lessen_draggingEl, this.nextSibling);
+  }
+  // ⭐ 确保 add-phase-btn 永远在最底部
+  const btn = treeEl.querySelector('.add-phase-btn');
+  if (btn) treeEl.appendChild(btn);
+  clearIndicators();
+  removeDragging();
+  syncOutlineFromDOM();
+}
+
+// ===== DOM → 内存：回写 CURRENT.outline =====
+function syncOutlineFromDOM() {
+  const lis = getAllItems();
+  const phases = [];
+  const stepsByPhase = {};
+
+  let currentPhase = null;
+
+  for (const el of lis) {
+    if (isLvl1(el)) continue;   // 忽略主题
+    if (isBtn(el))  continue;   // 忽略新增按钮（如果按钮是 li 以外的元素）
+
+    if (isLvl2(el)) {
+      currentPhase = el.textContent.trim();
+      phases.push({ text: currentPhase });
+      stepsByPhase[currentPhase] = [];
+    } else if (isLvl3(el)) {
+      if (!currentPhase) continue; // 安全防御
+      stepsByPhase[currentPhase].push(el.textContent.trim());
+    }
+  }
+
+  CURRENT.outline.phases = phases;
+  CURRENT.outline.stepsByPhase = stepsByPhase;
+
+  // （可选）立即保存结构到后端
+  persistOutlineOrderByRewriting();
+}
+// let CURRENT = {
+//   material_id: null, chapter_name: null, lesson_name: null,
+//   links: { lesson:'', prompt:'', score:'' },
+//   raw:   { lesson:'', prompt:'', score:'' },
+//   parsed:{ lesson:null, prompt:null, score:null },
+//   active:{ phase:null, step:null },
+//   outline:null
+// };
+async function persistOutlineOrderByRewriting() {
+  // 1) 按 outline 重写三份原文
+  const newLesson = rewriteMarkdownByOutline(CURRENT.raw.lesson, CURRENT.outline);
+  const newPrompt = rewriteMarkdownByOutline(CURRENT.raw.prompt, CURRENT.outline);
+  const newScore  = rewriteMarkdownByOutline(CURRENT.raw.score,  CURRENT.outline);
+
+  // 2) 更新本地内存（可选：重新解析 & 重绘）
+  CURRENT.raw.lesson = newLesson;
+  CURRENT.raw.prompt = newPrompt;
+  CURRENT.raw.score  = newScore;
+
+  CURRENT.parsed.lesson = parseHeadings(newLesson);
+  CURRENT.parsed.prompt = parseHeadings(newPrompt);
+  CURRENT.parsed.score  = parseHeadings(newScore);
+  // 可选：renderOutline(CURRENT.outline); // outline 顺序已是最新
+  console.log(CURRENT.outline);
+  console.log(CURRENT.raw.lesson);
+  await saveToOrigin({
+    lesson: { cdn_link: CURRENT.links.lesson, content: newLesson },
+    prompt: { cdn_link: CURRENT.links.prompt, content: newPrompt },
+    score:  { cdn_link: CURRENT.links.score,  content: newScore  },
+  });
+}
+/**
+ * 根据 outline 重排整篇 md：
+ * - phases: [{text}]
+ * - stepsByPhase: { [phaseName]: [stepName, ...] }
+ * 规则：
+ *  1) 一级标题/前导(prelude)保持不变；
+ *  2) 按 outline.phases 的顺序重排各“## 阶段块”；
+ *  3) 阶段块内部：保持原 intro 文本；按 stepsByPhase 顺序重排所有 ###；
+ *  4) 被移动到其它阶段的步骤会从原处“搬走”；未在新顺序中出现的旧步骤会作为“剩余”追加在末尾；
+ *  5) 缺少的步骤会生成占位骨架。
+ */
+function rewriteMarkdownByOutline(md, outline) {
+  const { lines, tokens, prelude, phases: oldPhaseTokens } = splitDoc(md);
+
+  // 索引：phaseName -> 原始阶段块文本 & 解析
+  const oldPhaseMap = new Map();
+  oldPhaseTokens.forEach(pt => {
+    oldPhaseMap.set(pt.text, {
+      token: pt,
+      block: getPhaseBlock(lines, pt)
+    });
+  });
+
+  // 全局步骤索引（带原所属阶段前缀，避免重名冲突）
+  const globalStepIndex = buildGlobalStepIndex(lines, tokens);
+  const usedSteps = new Set();
+
+  function takeStepTextPreferAny(stepName) {
+    // 任意相同名（跨阶段搬运）
+    for (const [k, v] of globalStepIndex.entries()) {
+      const name = k.split('||')[1];
+      if (name === stepName && !usedSteps.has(k)) {
+        usedSteps.add(k);
+        return v;
+      }
+    }
+    // 不存在则返回骨架
+    return `### ${stepName}\n\n`;
+  }
+
+  // 按新顺序构建各阶段块
+  const newPhaseBlocks = [];
+  const desiredPhases = outline.phases.map(p => p.text);
+  for (const phName of desiredPhases) {
+    const old = oldPhaseMap.get(phName);
+    const h2Line = `## ${phName}`;
+    let intro = '';
+    let leftovers = [];  // 本阶段原有但未被使用/未在新顺序中列出的步骤
+
+    if (old) {
+      const analyzed = analyzePhaseBlock(old.block);
+      intro = analyzed.intro;
+      // 先标记本阶段原有的步骤（用于“剩余”）
+      const oldStepNames = analyzed.steps.map(s => s.name);
+
+      // 目标顺序
+      const wantSteps = outline.stepsByPhase[phName] || [];
+      const orderedParts = wantSteps.map(stepName => takeStepTextPreferAny(stepName));
+
+      // 追加旧阶段中未被“使用”的步骤（保持内容不丢）
+      for (const st of analyzed.steps) {
+        // 若相同名的某个实例已被 usedSteps 吃掉，说明已搬走或已按需放置
+        // 需要判断具体 key（本阶段::该名）
+        const key = `${phName}||${st.name}`;
+        if (!usedSteps.has(key) && !wantSteps.includes(st.name)) {
+          orderedParts.push(st.text);
+          usedSteps.add(key);
+        }
+      }
+
+      const body = [h2Line, '', intro].join('\n').trimEnd() + '\n\n'
+                 + orderedParts.join('\n\n').trimEnd() + '\n\n';
+      newPhaseBlocks.push(body);
+    } else {
+      // 新增的阶段（原文里不存在）：生成一个空阶段骨架 + 目标步骤骨架
+      const wantSteps = outline.stepsByPhase[phName] || [];
+      const orderedParts = wantSteps.map(st => `### ${st}\n\n`);
+      const body = [h2Line, '', /* intro */ ''].join('\n').trimEnd() + '\n\n'
+                 + orderedParts.join('\n\n').trimEnd() + '\n\n';
+      newPhaseBlocks.push(body);
+    }
+  }
+
+  // 把未列入 outline 的“遗留阶段”也接到末尾，避免内容丢失
+  for (const pt of oldPhaseTokens) {
+    if (!desiredPhases.includes(pt.text)) {
+      const blk = getPhaseBlock(lines, pt);
+      newPhaseBlocks.push(blk.trimEnd() + '\n\n');
+    }
+  }
+
+  // 组装全文
+  const rebuilt = (prelude.trimEnd() + '\n\n' + newPhaseBlocks.join('')).replace(/\n{3,}/g, '\n\n');
+  return rebuilt.trimEnd() + '\n';
+}
diff --git a/Html/apps/templates/lesson.html b/Html/apps/templates/lesson.html
index 95c1755..9f8d247 100644
--- a/Html/apps/templates/lesson.html
+++ b/Html/apps/templates/lesson.html
@@ -8,6 +8,7 @@
     <link rel="stylesheet" href="/static/css/dashboard.css">
     <link rel="stylesheet" href="/static/css/lesson.css">
     <link rel="stylesheet" href="/static/css/teacher_course_setting.css">
+    <link rel="stylesheet" href="/static/css/lesson_setting.css">
     
 
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
@@ -39,6 +40,10 @@
   <!-- 课时编辑页主体：左侧大纲 + 右侧编辑 -->
   <div class="lesson-editor">
     <aside class="outline">
+      <button id="toggle-outline-reorder" class="reorder-btn" title="排序模式" aria-pressed="false">
+        排序
+      </button>
+      
       <ul id="outline-tree"></ul>
     </aside>