diff --git a/FreePEP 📚 人教社中小学电子教材批量下载器.md b/FreePEP 📚 人教社中小学电子教材批量下载器.md
new file mode 100644
index 0000000..909486b
--- /dev/null
+++ b/FreePEP 📚 人教社中小学电子教材批量下载器.md	
@@ -0,0 +1,209 @@
+# FreePEP 📚 人教社中小学电子教材批量下载器
+
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+
+**FreePEP** 是一款专为[人民教育出版社中小学电子教材平台](https://jc.pep.com.cn/)开发的自动化教材解析、批量抓取与高清 PDF 合成工具。
+
+提供**WebUI 界面**与**交互式命令行**，内置全量 780+ 本教材目录（数据截止到2026年08月31日）自动解密引擎与阿里云 WAF 滑块验证码自动破解机制，支持一键下载指定学段、学科、年级的全套教材并自动生成高清 PDF 文件。
+
+**更新内容：**
+
+2026.09.04 FreePEP v1.1 命令行加入了批量下载功能，详情见**启动办法三** 
+
+
+---
+
+## ✨ 核心特性
+
+- 🎯 **双操作模式**：
+  - **现代化 WebUI 界面**：全响应式布局，还原官网层级筛选体验，支持复选框一键批量下载、实时进度条展示与本地保存目录快捷打开。
+  - **交互式 CLI 终端**：支持数字菜单导航选择与命令行参数直达（脚本集成与服务器环境友好）。
+  - 📦 **高清单页下载与 PDF 合成**：自动探测各教材实际总页数，批量下载高分辨率原始 JPG，并通过 Pillow 库自动合成为标准 PDF 文件。
+
+
+---
+
+## 📸 界面预览
+
+### WebUI 网页端
+
+![](https://img.wemd.app/1788139668274_4n5d28.png)
+
+---
+
+### CLI 网页端
+
+![](https://img.wemd.app/1788139734008_2tmuak.png)
+
+
+# 🚀 使用方式
+
+## 🖥️ 方式一：（推荐，适合小白）
+
+直接下载发行包，解压缩后运行FreePEP.exe，在弹出的Web页面里面自行操作下载。
+
+## 方式二：从源码启动
+
+### 克隆仓库与安装依赖
+
+```bash
+# 克隆仓库
+git clone https://github.com/siknet/FreePEP.git
+cd FreePEP
+
+# 安装 Python 依赖
+pip install -r requirements.txt
+
+# 安装 Playwright 所需的 Chromium 浏览器内核
+playwright install chromium
+```
+
+### 启动办法一：Webui
+
+在终端中执行以下命令，系统将自动启动本地服务并在默认浏览器中打开管理页面：
+
+```bash
+python webui.py
+```
+
+- **访问地址**：`http://127.0.0.1:8000`
+- **默认下载目录**：项目根目录下的 `./downloads` 文件夹（可在 Web 界面点击「📁 打开保存目录」直达）。
+
+---
+
+### 启动办法二：使用 CLI 命令行
+
+#### 1. 交互式菜单模式
+
+直接运行 `cli.py`，根据控制台提示逐步选择学段、学科与年级：
+
+```bash
+python cli.py
+```
+
+#### 2. 参数直达模式（适合自动化与脚本调用）
+
+通过命令行参数直接指定条件过滤并自动开始下载：
+
+```bash
+# 1. 下载小学一年级的所有学科教材
+python cli.py --xd "小学" --nj "一年级" -y
+
+# 2. 下载高中数学的所有必修/选修教材
+python cli.py --xd "高中" --xk "数学" -y
+
+# 3. 下载初中全部教材
+python cli.py --xd "初中" -y
+
+# 4. 全局关键词搜索并下载（如包含"物理"的所有教材）
+python cli.py --search "物理"
+
+# 5. 清理本地临时图片缓存
+python cli.py --clear-cache
+
+# 6. 自定义 PDF 输出路径
+python cli.py --xd "小学（六三学制）" --xk "语文" --nj "一年级" -o "D:/Textbooks" -y
+```
+
+**参数说明**：
+
+| 参数 | 说明 | 示例 |
+| :--- | :--- | :--- |
+| `--xd` | 指定学段 | `小学（六三学制）`、`初中（六三学制）`、`小学（五四学制）`、`初中（五·四学制）`、`高中`、`培智学校`、`聋校`、`盲校（盲文版）`、`盲校（低视力版）` |
+| `--xk` | 指定学科 | `语文`、`数学`、`英语`、`物理`、`化学`、`历史`、`道德与法治` 等 |
+| `--nj` | 指定年级/册次 | `一年级`、`二年级` ... `九年级`、`专项`、`必修` 等 |
+| `--search`, `-s` | 关键词全局搜索 | `必修`、`高一`、`地理` |
+| `--clear-cache`, `-c` | 清理本地下载临时图片缓存 (`temp_pages`) | 无需参数 |
+| `--refresh`, `-r` | 强制重新从官方服务器拉取解密最新目录 | 无需参数 |
+| `--output`, `-o` | 指定 PDF 保存目录 | 默认: `./downloads` |
+| `--yes`, `-y` | 跳过确认提示直接开始下载 | 开启免交互 |
+
+### 启动办法三：按「学段 ➔ 年级」层级批量多线程下载 (download_all.py)
+
+如果您希望将教材按照 **`学段/年级/`** 两层规范文件夹分类归档下载，直接运行专属的高速批量多线程下载脚本：
+
+```bash
+# 1. 一键下载全网全量教材（默认 3 线程并发，按「学段/年级」两层子目录自动归档）
+python download_all.py
+
+# 2. 启用多线程并发加速（例如 10 线程并行高速下载）
+python download_all.py -w 10
+
+# 3. 下载多个指定学段（支持逗号分隔，如：义务教育六三学制、五四学制与高中）并自定义保存路径
+python download_all.py --xd "义务教育（六三学制）,义务教育（五四学制）,高中" -w 10 -o "D:/人教社教材"
+
+# 4. 仅下载单个学段（如高中全部教材）
+python download_all.py --xd "高中"
+
+# 5. 仅下载某个指定年级教材
+python download_all.py --nj "一年级"
+```
+
+**功能特性**：
+
+- 🚀 **多线程并发提速**：默认 **3 线程**并发同时下载，支持通过 `-w / --workers` 自定义并发线程数（如 5~10 线程），下载效率大幅提升。
+- 🎯 **支持多学段组合**：`--xd` 支持传入多个学段（逗号分隔），精准下载普通义务教育或高中学段，自动跳过特教教材。
+- 🌲 **两层层级目录**：自动分类保存为 `downloads/<学段>/<年级>/<教材名>.pdf`，告别成百上千文件堆在单目录。
+- ⚡ **智能断点续传**：已完整下载的教材**自动秒跳过**，中途随时中断无缝继续，绝不重复下载。
+- 🧹 **切片自动清理**：每本教材合成 PDF 后自动清理临时图片分片，极大保护硬盘空间。
+- 💬 **清爽紧凑输出**：不打印繁琐单页过程，仅在教材下载合并完成或跳过时输出进度与提示。
+
+---
+
+## 📦 一键打包为 Windows 独立 EXE 发行版
+
+如果您想将本项目打包成 **脱离 Python 环境** 的独立绿色软件包发布给普通用户，只需执行工作区自带的一键打包脚本：
+
+```bash
+python build_exe.py
+```
+
+### 打包脚本会自动完成以下操作：
+
+1. 自动检查并安装 `PyInstaller` 编译工具。
+2. 将 WebUI 及所有 Python 依赖打包为独立可执行文件 `FreePEP.exe`。
+3. **自动提取并内嵌绿色便携版 Chromium 浏览器内核**至 `browsers/` 目录。
+4. 自动在 `dist/` 目录下生成 `FreePEP-Windows-x64.zip` 发行压缩包。
+
+> **分发给用户使用**：用户下载压缩包后解压，**双击 `FreePEP.exe` 即可直接使用**（会自动弹出系统默认浏览器打开 WebUI，无需安装 Python、无需配置环境变量、无需额外下载浏览器内核）。
+
+---
+
+## 📁 项目目录结构
+
+```text
+FreePEP/
+├── pep_core.py          # 核心底层库（AES 解密、Playwright 爬取、PDF 合成）
+├── webui.py             # FastAPI WebUI 服务器与一体化前端界面
+├── cli.py               # 交互式与参数化 CLI 终端下载器
+├── download_all.py      # 按「学段/年级」层级全量下载脚本（支持断点续传与缓存清理）
+├── build_exe.py         # 一键打包发布 Windows EXE 独立便携包脚本
+├── pep_crawler.py       # 命令行测试与示例下载脚本
+├── pep_catalog.json     # 全量教材元数据本地缓存（自动生成）
+├── requirements.txt     # 项目 Python 依赖清单
+├── README.md            # 项目使用说明文档
+├── temp_pages/          # 图片下载临时缓存目录（下载后自动清理/保留）
+└── downloads/           # 生成的高清 PDF 默认存放目录
+```
+
+---
+
+## 🔍 技术原理解析
+
+1. 略。我是不明白为什么免费教材免费提供阅读不提供免费下载。
+
+---
+
+## ⚠️ 免责声明 (Disclaimer)
+
+1. 本项目仅供 Python 爬虫技术交流、逆向工程学习与个人学习研究使用，严禁用于任何商业用途或盈利活动。
+2. 本项目下载的所有教材版权均归**人民教育出版社（PEP）**及相关版权所有方所有。
+3. 使用本项目时请控制请求频率，严禁进行任何可能对官方服务器造成过大负载的行为。请于下载后 24 小时内自行删除，如需长期使用请购买或支持官方正版出版物。
+4. 使用者因违反版权或不当使用造成的一切法律纠纷与责任，均由使用者个人自行承担，与本项目作者无关。
+
+---
+
+## 📄 开源许可
+
+本项目基于 [MIT License](LICENSE) 协议开源。欢迎提交 Issue 与 Pull Request！
+
diff --git a/cli.py b/cli.py
index 2b5bedf..0a981ed 100644
--- a/cli.py
+++ b/cli.py
@@ -54,12 +54,16 @@ def interactive_mode():
     print("\n请选择检索模式：")
     print("  [1] 分类层级筛选（学段 ➔ 学科 ➔ 年级）")
     print("  [2] 关键词全局搜索（如输入：'必修一'、'高一数学'、'生物'）")
+    print("  [3] 一键按「学段 ➔ 年级」两层目录全量下载全部教材")
     
-    mode_choice = input("请输入模式编号 (1/2, 默认 1): ").strip()
+    mode_choice = input("请输入模式编号 (1/2/3, 默认 1): ").strip()
     
     matched_books = []
     
-    if mode_choice == "2":
+    if mode_choice == "3":
+        matched_books = PepCatalog.fetch_and_decrypt_all()
+        print(f"\n[+] 已加载全网全部教材，共 {len(matched_books)} 本。")
+    elif mode_choice == "2":
         kw = input("\n🔍 请输入搜索关键词: ").strip()
         if not kw:
             print("[-] 关键词不能为空！")
@@ -93,13 +97,15 @@ def interactive_mode():
 
     print(f"\n✅ 共检索到 {len(matched_books)} 本教材：")
     print("-" * 65)
-    for idx, b in enumerate(matched_books, 1):
+    for idx, b in enumerate(matched_books[:15], 1):
         xd = b.get("xd", "")
         xk = b.get("xk", "")
         nj = b.get("nj", "")
         cc = b.get("cc", "")
         title = b.get("title", "")
         print(f"  [{idx:2d}] [{xd}|{xk}|{nj}{cc}] 《{title}》 (ID: {b['id']})")
+    if len(matched_books) > 15:
+        print(f"  ... 以及其余 {len(matched_books) - 15} 本教材（已折叠显示）")
     print("-" * 65)
 
     print("\n请选择下载范围：")
@@ -139,14 +145,28 @@ def interactive_mode():
         return
 
     out_dir = os.path.abspath("./downloads")
-    print(f"\n🚀 即将开始下载 {len(to_download)} 本教材，保存目录: {out_dir}")
+    print(f"\n🚀 即将开始下载 {len(to_download)} 本教材，基础保存目录: {out_dir}")
+    print(f"🌲 采用「学段 ➔ 年级」两层子目录分类保存 (已存在 PDF 自动跳过)")
     downloader = PepDownloader(headless=True, output_dir=out_dir)
 
     for idx, b in enumerate(to_download, 1):
+        xd = b.get("xd", "其他学段")
+        nj = b.get("nj", "通用").strip() or "通用"
+        import re
+        safe_xd = re.sub(r'[\/:*?"<>|]', '_', xd).strip()
+        safe_nj = re.sub(r'[\/:*?"<>|]', '_', nj).strip()
+        sub_dir = os.path.join(safe_xd, safe_nj)
+
         print(f"\n==================================================")
-        print(f"[{idx}/{len(to_download)}] 开始下载: 《{b.get('title')}》")
+        print(f"[{idx}/{len(to_download)}] [{safe_xd}/{safe_nj}] 《{b.get('title')}》")
         print(f"==================================================")
-        downloader.download_book(book_id=b["id"], custom_title=b.get("title"))
+        downloader.download_book(
+            book_id=b["id"],
+            custom_title=b.get("title"),
+            sub_dir=sub_dir,
+            skip_if_exists=True,
+            clean_temp=True
+        )
 
     print("\n🎉 全部选定任务执行完毕！")
 
@@ -154,14 +174,20 @@ def interactive_mode():
 def cli_args_mode(args):
     """命令行参数直接执行模式"""
     print_banner()
-    matched = PepCatalog.filter_books(xd=args.xd, xk=args.xk, nj=args.nj, keyword=args.search)
+    if args.all:
+        matched = PepCatalog.fetch_and_decrypt_all()
+    else:
+        matched = PepCatalog.filter_books(xd=args.xd, xk=args.xk, nj=args.nj, keyword=args.search)
+
     if not matched:
         print("[-] 未查找到符合条件的教材！")
         return
 
     print(f"[+] 符合条件的教材共 {len(matched)} 本：")
-    for idx, b in enumerate(matched, 1):
-        print(f"  [{idx}] 《{b.get('title')}》 (ID: {b['id']})")
+    for idx, b in enumerate(matched[:15], 1):
+        print(f"  [{idx}] [{b.get('xd')}|{b.get('nj')}] 《{b.get('title')}》 (ID: {b['id']})")
+    if len(matched) > 15:
+        print(f"  ... 以及其余 {len(matched) - 15} 本教材（已折叠）")
 
     if not args.yes:
         confirm = input(f"\n确认下载以上 {len(matched)} 本教材吗？(y/n, 默认 y): ").strip().lower()
@@ -171,20 +197,40 @@ def cli_args_mode(args):
 
     out_dir = os.path.abspath(args.output)
     downloader = PepDownloader(headless=True, output_dir=out_dir)
+    use_tree = not args.flat
+
+    print(f"\n📂 保存根目录: {out_dir}")
+    print(f"🌲 目录结构: {'按「学段/年级」两层子目录' if use_tree else '全部平铺在根目录'}")
+
     for idx, b in enumerate(matched, 1):
+        sub_dir = None
+        if use_tree:
+            import re
+            safe_xd = re.sub(r'[\/:*?"<>|]', '_', b.get("xd", "其他学段")).strip()
+            safe_nj = re.sub(r'[\/:*?"<>|]', '_', b.get("nj", "通用") or "通用").strip()
+            sub_dir = os.path.join(safe_xd, safe_nj)
+
         print(f"\n[{idx}/{len(matched)}] 正在下载: 《{b.get('title')}》...")
-        downloader.download_book(book_id=b["id"], custom_title=b.get("title"))
+        downloader.download_book(
+            book_id=b["id"],
+            custom_title=b.get("title"),
+            sub_dir=sub_dir,
+            skip_if_exists=True,
+            clean_temp=True
+        )
 
     print(f"\n🎉 下载完成！文件已保存至: {out_dir}")
 
 
 def main():
     parser = argparse.ArgumentParser(description="人民教育出版社电子教材 CLI 下载器")
+    parser.add_argument("--all", "-a", action="store_true", help="下载全网全部 780+ 本教材")
     parser.add_argument("--xd", help="指定学段（如：小学（六三学制）、初中（六三学制）、高中等）")
     parser.add_argument("--xk", help="指定学科（如：语文、数学、英语、物理等）")
     parser.add_argument("--nj", help="指定年级（如：一年级、七年级、必修等）")
     parser.add_argument("--search", "-s", help="全局搜索关键词")
     parser.add_argument("--output", "-o", default="./downloads", help="PDF 文件保存目录 (默认: ./downloads)")
+    parser.add_argument("--flat", action="store_true", help="平铺存放在根目录下（默认自动按「学段/年级」两层子目录分类）")
     parser.add_argument("--yes", "-y", action="store_true", help="免确认直接开始下载")
     parser.add_argument("--refresh", "-r", action="store_true", help="强制从官方服务器重新拉取并解密最新教材目录")
     parser.add_argument("--clear-cache", "-c", action="store_true", help="清理本地临时下载缓存 (temp_pages)")
@@ -204,7 +250,7 @@ def main():
         print(f"[+] 目录同步成功！共获取到 {len(books)} 本教材。")
         return
 
-    if args.xd or args.xk or args.nj or args.search:
+    if args.all or args.xd or args.xk or args.nj or args.search:
         cli_args_mode(args)
     else:
         interactive_mode()
diff --git a/download_all.py b/download_all.py
new file mode 100644
index 0000000..02eab9e
--- /dev/null
+++ b/download_all.py
@@ -0,0 +1,233 @@
+"""
+人教社电子教材全量多线程下载器 (download_all.py)
+功能：
+按「学段 ➔ 年级」两层层级目录结构，多线程并发下载全网人教社电子教材并自动合成为高清 PDF。
+
+默认目录结构示例：
+downloads/
+  ├── 小学（六三学制）/
+  │     ├── 一年级/
+  │     │     ├── 义务教育教科书 语文 一年级 上册.pdf
+  │     │     └── 义务教育教科书 数学 一年级 上册.pdf
+  │     └── 二年级/
+  ├── 初中（六三学制）/
+  └── 高中/
+        └── 必修/
+
+特性：
+- 默认 3 线程并发加速下载（支持 --workers 自定义）
+- 自动按「学段/年级」两层文件夹分类存放
+- 紧凑输出：不显示单页下载细节，下载并合成完毕时直接提示
+- 支持断点续传：已下载完成的教材自动秒跳过，无缝继续
+- 自动清理单页切片图片缓存，极大节省磁盘空间
+"""
+
+import os
+import sys
+import re
+import time
+import random
+import argparse
+import threading
+from concurrent.futures import ThreadPoolExecutor, as_completed
+from pep_core import PepCatalog, PepDownloader, normalize_xd, get_base_dir
+
+if hasattr(sys.stdout, "reconfigure"):
+    sys.stdout.reconfigure(encoding="utf-8")
+
+
+def sanitize_filename(name: str) -> str:
+    """过滤文件名中的非法字符"""
+    return re.sub(r'[\/:*?"<>|]', '_', name).strip()
+
+
+def run_download_all(output_dir: str = "./downloads",
+                     target_xd: str = None,
+                     target_nj: str = None,
+                     max_workers: int = 3,
+                     delay: float = 1.0,
+                     clean_temp: bool = True):
+    print("=" * 70)
+    print("      📚 人民教育出版社 (PEP) 全量教材多线程层级下载器")
+    print("=" * 70)
+
+    # 1. 获取全量教材目录数据
+    print("[*] 正在加载教材全量目录数据...")
+    all_books = PepCatalog.fetch_and_decrypt_all()
+    print(f"[+] 成功获取全量教材数据库，共 {len(all_books)} 本。")
+
+    # 2. 条件过滤（支持多个学段，逗号分隔，如："义务教育（六三学制）,义务教育（五四学制）,高中"）
+    target_xds = []
+    if target_xd and target_xd != "全部":
+        target_xds = [x.strip() for x in re.split(r'[,，|/]', target_xd) if x.strip()]
+
+    def is_match_xd(b_xd, b_xdtype):
+        if not target_xds:
+            return True
+        for t in target_xds:
+            # 精确匹配或关键词包含匹配（如匹配 六三、五四、高中）
+            if t == b_xd or t == b_xdtype:
+                return True
+            if ("六三" in t and "六三" in b_xdtype) or ("六三" in t and "六三" in b_xd):
+                return True
+            if ("五四" in t or "五·四" in t) and ("五四" in b_xdtype or "五·四" in b_xdtype or "五四" in b_xd or "五·四" in b_xd):
+                return True
+            if ("高中" in t) and ("高中" in b_xd or "高中" in b_xdtype):
+                return True
+        return False
+
+    books_to_download = []
+    for b in all_books:
+        xd = normalize_xd(b.get("xd", "其他学段"))
+        xdtype = b.get("xdtype", "").strip()
+        nj = b.get("nj", "通用").strip() or "通用"
+        
+        if not is_match_xd(xd, xdtype):
+            continue
+        if target_nj and target_nj != "全部" and nj != target_nj:
+            continue
+        books_to_download.append(b)
+
+    total_count = len(books_to_download)
+    if total_count == 0:
+        print("[-] 未查找到符合条件的教材！请检查学段或年级名称是否正确。")
+        return
+
+    base_out = os.path.abspath(output_dir) if output_dir else os.path.join(get_base_dir(), "downloads")
+    print(f"\n📂 基础保存目录: {base_out}")
+    print(f"📦 待处理教材数量: {total_count} 本")
+    print(f"🚀 并发下载线程数: {max_workers} 个线程")
+    print(f"🌲 归档目录结构: {base_out}/<学段>/<年级>/<教材名>.pdf")
+    print(f"⚡ 断点续传机制: 开启 (已存在 PDF 自动秒跳过)")
+    print(f"🧹 切片缓存清理: {'开启 (每本合成后自动删除临时图片)' if clean_temp else '关闭'}")
+    print("-" * 70 + "\n")
+
+    downloader = PepDownloader(headless=True, output_dir=base_out)
+
+    # 统计锁
+    lock = threading.Lock()
+    processed_count = 0
+    success_count = 0
+    skipped_count = 0
+    failed_count = 0
+    start_time = time.time()
+
+    def process_single_book(item):
+        nonlocal processed_count, success_count, skipped_count, failed_count
+        idx, b = item
+        book_id = b.get("id")
+        raw_title = b.get("title", f"book_{book_id}")
+        
+        # 优先采用用户习惯的学段规范大类
+        xdtype = b.get("xdtype", "").strip()
+        xd = normalize_xd(b.get("xd", "其他学段"))
+        if "六三" in xdtype:
+            stage_dir_name = "义务教育（六三学制）"
+        elif "五四" in xdtype or "五·四" in xdtype:
+            stage_dir_name = "义务教育（五四学制）"
+        elif "高中" in xdtype or "高中" in xd:
+            stage_dir_name = "高中"
+        else:
+            stage_dir_name = xd
+
+        nj = b.get("nj", "通用").strip() or "通用"
+
+        safe_xd = sanitize_filename(stage_dir_name)
+        safe_nj = sanitize_filename(nj)
+        sub_dir = os.path.join(safe_xd, safe_nj)
+        safe_title = sanitize_filename(raw_title)
+
+        target_dir = os.path.join(base_out, sub_dir)
+        expected_pdf = os.path.join(target_dir, f"{safe_title}.pdf")
+
+        # 检查是否已存在完整 PDF
+        if os.path.exists(expected_pdf) and os.path.getsize(expected_pdf) > 50000:
+            with lock:
+                processed_count += 1
+                skipped_count += 1
+                percent = (processed_count / total_count) * 100
+                size_kb = os.path.getsize(expected_pdf) // 1024
+                print(f"[{processed_count}/{total_count}] ({percent:5.1f}%) [✔ 已存在跳过] [{safe_xd}/{safe_nj}] 《{safe_title}》 ({size_kb} KB)")
+            return True
+
+        # 开始下载
+        try:
+            # 错峰启动微延时
+            time.sleep(random.uniform(0.1, 0.8))
+            
+            pdf_path = downloader.download_book(
+                book_id=book_id,
+                custom_title=raw_title,
+                sub_dir=sub_dir,
+                skip_if_exists=True,
+                clean_temp=clean_temp,
+                quiet=True
+            )
+
+            with lock:
+                processed_count += 1
+                percent = (processed_count / total_count) * 100
+                if pdf_path and os.path.exists(pdf_path):
+                    success_count += 1
+                    pdf_size_mb = round(os.path.getsize(pdf_path) / (1024 * 1024), 2)
+                    print(f"[{processed_count}/{total_count}] ({percent:5.1f}%) [🎉 下载合成完成] [{safe_xd}/{safe_nj}] 《{safe_title}》 ({pdf_size_mb} MB)")
+                else:
+                    failed_count += 1
+                    print(f"[{processed_count}/{total_count}] ({percent:5.1f}%) [❌ 下载失败] [{safe_xd}/{safe_nj}] 《{safe_title}》")
+
+            if delay > 0:
+                time.sleep(random.uniform(delay * 0.7, delay * 1.3))
+            return True
+        except Exception as e:
+            with lock:
+                processed_count += 1
+                failed_count += 1
+                percent = (processed_count / total_count) * 100
+                print(f"[{processed_count}/{total_count}] ({percent:5.1f}%) [❌ 下载异常: {e}] [{safe_xd}/{safe_nj}] 《{safe_title}》")
+            return False
+
+    indexed_books = list(enumerate(books_to_download, 1))
+
+    # 使用线程池并发下载
+    with ThreadPoolExecutor(max_workers=max_workers) as executor:
+        futures = [executor.submit(process_single_book, item) for item in indexed_books]
+        for f in as_completed(futures):
+            try:
+                f.result()
+            except Exception:
+                pass
+
+    elapsed = time.time() - start_time
+    elapsed_min = round(elapsed / 60, 1)
+
+    print("\n" + "=" * 70)
+    print("🎉 批量下载任务执行完毕！")
+    print(f"📊 统计汇总: 总计 {total_count} 本 | 新下载完成 {success_count} 本 | 已存在跳过 {skipped_count} 本 | 失败 {failed_count} 本")
+    print(f"⏱️ 总耗时: {elapsed_min} 分钟")
+    print(f"📁 教材归档存放于: {base_out}")
+    print("=" * 70)
+
+
+def main():
+    parser = argparse.ArgumentParser(description="人教社电子教材按「学段/年级」层级目录多线程全量下载工具")
+    parser.add_argument("--workers", "-w", type=int, default=3, help="同时下载的并发线程数 (默认: 3)")
+    parser.add_argument("--output", "-o", default="./downloads", help="PDF 根输出目录 (默认: ./downloads)")
+    parser.add_argument("--xd", help="只下载指定学段（如：小学（六三学制）、初中（六三学制）、高中 等）")
+    parser.add_argument("--nj", help="只下载指定年级（如：一年级、七年级 等）")
+    parser.add_argument("--delay", "-d", type=float, default=0.5, help="单线程任务间休眠秒数 (默认: 0.5 秒)")
+    parser.add_argument("--keep-temp", action="store_true", help="保留单页切片图片缓存（默认会自动删除以节约空间）")
+
+    args = parser.parse_args()
+
+    run_download_all(
+        output_dir=args.output,
+        target_xd=args.xd,
+        target_nj=args.nj,
+        max_workers=args.workers,
+        delay=args.delay,
+        clean_temp=not args.keep_temp
+    )
+
+
+if __name__ == "__main__":
+    main()
diff --git a/pep_catalog.json b/pep_catalog.json
index aec966b..21de047 100644
--- a/pep_catalog.json
+++ b/pep_catalog.json
@@ -48,7 +48,7 @@
     "pdfurl": "https://book.pep.com.cn/1313001301261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "俄语",
     "nj": "九年级",
     "cc": "上册",
@@ -62,7 +62,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001603261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "六年级",
     "cc": "全一册",
@@ -76,7 +76,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001503261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "五年级",
     "cc": "全一册",
@@ -90,7 +90,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001403261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "四年级",
     "cc": "全一册",
@@ -104,7 +104,7 @@
     "pdfurl": "https://book.pep.com.cn/1312001301261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "英语",
     "nj": "九年级",
     "cc": "上册",
@@ -118,7 +118,7 @@
     "pdfurl": "https://book.pep.com.cn/1384001101262/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中（五·四学制）",
+    "xd": "小学（五四学制）",
     "xk": "道德与法治",
     "nj": "七年级",
     "cc": "上册",
@@ -132,7 +132,7 @@
     "pdfurl": "https://book.pep.com.cn/1212001502255/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "英语",
     "nj": "五年级",
     "cc": "下册",
@@ -146,7 +146,7 @@
     "pdfurl": "https://book.pep.com.cn/1212001501255/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "英语",
     "nj": "五年级",
     "cc": "上册",
@@ -174,7 +174,7 @@
     "pdfurl": "https://book.pep.com.cn/1313001202251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "俄语",
     "nj": "八年级",
     "cc": "下册",
@@ -188,7 +188,7 @@
     "pdfurl": "https://book.pep.com.cn/1361001302251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "影视",
     "nj": "九年级",
     "cc": "下册",
@@ -202,7 +202,7 @@
     "pdfurl": "https://book.pep.com.cn/1361001302256/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "戏剧",
     "nj": "九年级",
     "cc": "下册",
@@ -216,7 +216,7 @@
     "pdfurl": "https://book.pep.com.cn/1361001302252/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "舞蹈",
     "nj": "九年级",
     "cc": "下册",
@@ -230,7 +230,7 @@
     "pdfurl": "https://book.pep.com.cn/1384001602252/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中（五·四学制）",
+    "xd": "小学（五四学制）",
     "xk": "道德与法治",
     "nj": "六年级",
     "cc": "下册",
@@ -244,7 +244,7 @@
     "pdfurl": "https://book.pep.com.cn/021284001602191/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "聋校",
     "xk": "道德与法治",
     "nj": "六年级",
     "cc": "下册",
@@ -258,7 +258,7 @@
     "pdfurl": "https://book.pep.com.cn/021311001302181/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "聋校",
     "xk": "语文",
     "nj": "九年级",
     "cc": "下册",
@@ -272,7 +272,7 @@
     "pdfurl": "https://book.pep.com.cn/021343001102241/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "聋校",
     "xk": "生物学",
     "nj": "七年级",
     "cc": "下册",
@@ -286,7 +286,7 @@
     "pdfurl": "https://book.pep.com.cn/021363001302141/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "聋校",
     "xk": "美术",
     "nj": "九年级",
     "cc": "下册",
@@ -300,7 +300,7 @@
     "pdfurl": "https://book.pep.com.cn/021363001301141/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "聋校",
     "xk": "美术",
     "nj": "九年级",
     "cc": "上册",
@@ -314,7 +314,7 @@
     "pdfurl": "https://book.pep.com.cn/021363001202131/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "聋校",
     "xk": "美术",
     "nj": "八年级",
     "cc": "下册",
@@ -538,7 +538,7 @@
     "pdfurl": "https://book.pep.com.cn/021311001301181/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "聋校",
     "xk": "语文",
     "nj": "九年级",
     "cc": "上册",
@@ -552,7 +552,7 @@
     "pdfurl": "https://book.pep.com.cn/021343001101121/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "聋校",
     "xk": "生物学",
     "nj": "七年级",
     "cc": "上册",
@@ -566,7 +566,7 @@
     "pdfurl": "https://book.pep.com.cn/021363001201131/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "聋校",
     "xk": "美术",
     "nj": "八年级",
     "cc": "上册",
@@ -580,7 +580,7 @@
     "pdfurl": "https://book.pep.com.cn/1384001601252/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中（五·四学制）",
+    "xd": "小学（五四学制）",
     "xk": "道德与法治",
     "nj": "六年级",
     "cc": "上册",
@@ -594,7 +594,7 @@
     "pdfurl": "https://book.pep.com.cn/1313001203221/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "俄语",
     "nj": "八年级",
     "cc": "上册",
@@ -608,7 +608,7 @@
     "pdfurl": "https://book.pep.com.cn/1361001301252/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "影视",
     "nj": "九年级",
     "cc": "上册",
@@ -622,7 +622,7 @@
     "pdfurl": "https://book.pep.com.cn/1361001301256/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "戏剧",
     "nj": "九年级",
     "cc": "上册",
@@ -636,7 +636,7 @@
     "pdfurl": "https://book.pep.com.cn/1361001301251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "舞蹈",
     "nj": "九年级",
     "cc": "上册",
@@ -650,7 +650,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001303251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "三年级",
     "cc": "全一册",
@@ -664,7 +664,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001203251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "二年级",
     "cc": "全一册",
@@ -678,7 +678,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001203231/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "专项",
     "cc": "全一册",
@@ -692,7 +692,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001203232/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "专项",
     "cc": "全一册",
@@ -706,7 +706,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001203233/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "专项",
     "cc": "全一册",
@@ -720,7 +720,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001203234/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "专项",
     "cc": "全一册",
@@ -734,7 +734,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001103231/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "专项",
     "cc": "全一册",
@@ -748,7 +748,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001103232/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "专项",
     "cc": "全一册",
@@ -762,7 +762,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001103233/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "专项",
     "cc": "全一册",
@@ -776,7 +776,7 @@
     "pdfurl": "https://book.pep.com.cn/1272001103234/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "体育与健康",
     "nj": "专项",
     "cc": "全一册",
@@ -790,7 +790,7 @@
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   {
     "id": "1321001301261",
     "title": "义务教育教科书数学九年级上册",
@@ -10646,7 +10520,7 @@
     "pdfurl": "https://book.pep.com.cn/1321001301261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "数学",
     "nj": "九年级",
     "cc": "上册",
@@ -10660,7 +10534,7 @@
     "pdfurl": "https://book.pep.com.cn/1321001201251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "数学",
     "nj": "八年级",
     "cc": "上册",
@@ -10674,7 +10548,7 @@
     "pdfurl": "https://book.pep.com.cn/1321001101241/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "数学",
     "nj": "七年级",
     "cc": "上册",
@@ -10688,7 +10562,7 @@
     "pdfurl": "https://book.pep.com.cn/1221001601261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "数学",
     "nj": "六年级",
     "cc": "上册",
@@ -10702,7 +10576,7 @@
     "pdfurl": "https://book.pep.com.cn/1221001501261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "数学",
     "nj": "五年级",
     "cc": "上册",
@@ -10716,7 +10590,7 @@
     "pdfurl": "https://book.pep.com.cn/1221001401261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "数学",
     "nj": "四年级",
     "cc": "上册",
@@ -10730,7 +10604,7 @@
     "pdfurl": "https://book.pep.com.cn/1221001301251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "数学",
     "nj": "三年级",
     "cc": "上册",
@@ -10744,7 +10618,7 @@
     "pdfurl": "https://book.pep.com.cn/1221001201251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "数学",
     "nj": "二年级",
     "cc": "上册",
@@ -10758,7 +10632,7 @@
     "pdfurl": "https://book.pep.com.cn/1221001101241/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "数学",
     "nj": "一年级",
     "cc": "上册",
@@ -10772,7 +10646,7 @@
     "pdfurl": "https://book.pep.com.cn/1311001301261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "语文",
     "nj": "九年级",
     "cc": "上册",
@@ -10786,7 +10660,7 @@
     "pdfurl": "https://book.pep.com.cn/1311001201241/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "语文",
     "nj": "八年级",
     "cc": "上册",
@@ -10800,7 +10674,7 @@
     "pdfurl": "https://book.pep.com.cn/1311001101241/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "语文",
     "nj": "七年级",
     "cc": "上册",
@@ -10814,7 +10688,7 @@
     "pdfurl": "https://book.pep.com.cn/1211001601261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "语文",
     "nj": "六年级",
     "cc": "上册",
@@ -10828,7 +10702,7 @@
     "pdfurl": "https://book.pep.com.cn/1211001501261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "语文",
     "nj": "五年级",
     "cc": "上册",
@@ -10842,7 +10716,7 @@
     "pdfurl": "https://book.pep.com.cn/1211001401261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "语文",
     "nj": "四年级",
     "cc": "上册",
@@ -10856,7 +10730,7 @@
     "pdfurl": "https://book.pep.com.cn/1211001301241/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "语文",
     "nj": "三年级",
     "cc": "上册",
@@ -10870,7 +10744,7 @@
     "pdfurl": "https://book.pep.com.cn/1211001201241/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "语文",
     "nj": "二年级",
     "cc": "上册",
@@ -10884,7 +10758,7 @@
     "pdfurl": "https://book.pep.com.cn/1211001101241/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "语文",
     "nj": "一年级",
     "cc": "上册",
@@ -10898,7 +10772,7 @@
     "pdfurl": "https://book.pep.com.cn/1291001403221/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "习近平新时代中国特色社会主义思想学生读本",
     "nj": "五年级",
     "cc": "上册",
@@ -10912,7 +10786,7 @@
     "pdfurl": "https://book.pep.com.cn/1291001103221/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "习近平新时代中国特色社会主义思想学生读本",
     "nj": "三年级",
     "cc": "上册",
@@ -10920,13 +10794,13 @@
     "ptzy": ""
   },
   {
-    "id": "1384001301212",
+    "id": "1384001301261",
     "title": "义务教育教科书道德与法治九年级上册",
     "thumb": "https://jc.pep.com.cn/xsys/df/202209/W020260824544330133726.jpg",
-    "pdfurl": "https://book.pep.com.cn/1384001301212/",
+    "pdfurl": "https://book.pep.com.cn/1384001301261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "道德与法治",
     "nj": "九年级",
     "cc": "上册",
@@ -10940,7 +10814,7 @@
     "pdfurl": "https://book.pep.com.cn/1384001201251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "道德与法治",
     "nj": "八年级",
     "cc": "上册",
@@ -10954,7 +10828,7 @@
     "pdfurl": "https://book.pep.com.cn/1384001101241/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "初中",
+    "xd": "初中（六三学制）",
     "xk": "道德与法治",
     "nj": "七年级",
     "cc": "上册",
@@ -10968,7 +10842,7 @@
     "pdfurl": "https://book.pep.com.cn/1284001601261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "道德与法治",
     "nj": "六年级",
     "cc": "上册",
@@ -10982,7 +10856,7 @@
     "pdfurl": "https://book.pep.com.cn/1284001501261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "道德与法治",
     "nj": "五年级",
     "cc": "上册",
@@ -10996,7 +10870,7 @@
     "pdfurl": "https://book.pep.com.cn/1284001401261/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "道德与法治",
     "nj": "四年级",
     "cc": "上册",
@@ -11010,7 +10884,7 @@
     "pdfurl": "https://book.pep.com.cn/1284001301251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "道德与法治",
     "nj": "三年级",
     "cc": "上册",
@@ -11024,7 +10898,7 @@
     "pdfurl": "https://book.pep.com.cn/1284001201251/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "道德与法治",
     "nj": "二年级",
     "cc": "上册",
@@ -11038,7 +10912,7 @@
     "pdfurl": "https://book.pep.com.cn/1284001101241/",
     "dzjcurl": "",
     "sydx": "学生",
-    "xd": "小学",
+    "xd": "小学（六三学制）",
     "xk": "道德与法治",
     "nj": "一年级",
     "cc": "上册",
diff --git a/pep_core.py b/pep_core.py
index f9cc907..ff62c16 100644
--- a/pep_core.py
+++ b/pep_core.py
@@ -109,6 +109,36 @@ def sort_nj_key(nj: str) -> Tuple[int, int, str]:
     return (1, 0, nj)
 
 
+def map_book_xd(b: dict) -> str:
+    """根据教材元数据中的 xd 与 xdtype 精确解析标准化学段"""
+    xd = b.get("xd", "").strip()
+    xdtype = b.get("xdtype", "").strip()
+
+    if "盲文" in xdtype:
+        return "盲校（盲文版）"
+    if "低视力" in xdtype:
+        return "盲校（低视力版）"
+    if "聋校" in xdtype:
+        return "聋校"
+    if "培智" in xdtype:
+        return "培智学校"
+    if "六三" in xdtype:
+        if xd == "初中":
+            return "初中（六三学制）"
+        return "小学（六三学制）"
+    if "五四" in xdtype:
+        if xd == "初中":
+            return "初中（五·四学制）"
+        return "小学（五四学制）"
+    if xd == "高中":
+        return "高中"
+    if xd == "小学":
+        return "小学（六三学制）"
+    if xd == "初中":
+        return "初中（六三学制）"
+    return normalize_xd(xd)
+
+
 class PepCatalog:
     """人教社教材目录管理器"""
     BASE_URL = "https://jc.pep.com.cn/"
@@ -124,9 +154,8 @@ class PepCatalog:
                 with open(cls.LOCAL_CACHE, "r", encoding="utf-8") as f:
                     data = json.load(f)
                     if isinstance(data, list) and len(data) > 0:
-                        # 确保每条记录都包含标准化的学段
                         for b in data:
-                            b["xd"] = normalize_xd(b.get("xd", ""))
+                            b["xd"] = map_book_xd(b)
                         return data
             except Exception:
                 pass
@@ -136,23 +165,22 @@ class PepCatalog:
             "Referer": cls.BASE_URL
         }
 
-        # 1. 下载首页定位 chunk-bfbdf2c4 JS
+        # 1. 下载首页定位 chunk-bfbdf2c4 JS (支持兼容压缩无引号属性)
         req = urllib.request.Request(cls.BASE_URL, headers=headers)
         with urllib.request.urlopen(req) as resp:
             html = resp.read().decode("utf-8", errors="ignore")
 
-        chunk_match = re.search(r'src="(/js/chunk-bfbdf2c4\.[a-f0-9]+\.js)"', html)
-        if not chunk_match:
-            chunk_match = re.search(r'href="(/js/chunk-bfbdf2c4\.[a-f0-9]+\.js)"', html)
-
-        chunk_path = chunk_match.group(1) if chunk_match else "/js/chunk-bfbdf2c4.3782cce3.js"
+        chunk_match = re.search(r'(/js/chunk-bfbdf2c4\.[a-f0-9]+\.js)', html)
+        chunk_path = chunk_match.group(1) if chunk_match else "/js/chunk-bfbdf2c4.b4dfb5d3.js"
         chunk_url = urllib.parse.urljoin(cls.BASE_URL, chunk_path)
 
         # 2. 获取 JS 内容并提取十六进制密文
         js_req = urllib.request.Request(chunk_url, headers=headers)
         raw_js = urllib.request.urlopen(js_req).read()
 
-        m = re.search(rb'var\s+o,\s*c\s*=\s*"([A-F0-9]+)"', raw_js)
+        m = re.search(rb'c\s*=\s*"([A-F0-9]+)"', raw_js)
+        if not m:
+            m = re.search(rb'var\s+o,\s*c\s*=\s*"([A-F0-9]+)"', raw_js)
         if not m:
             raise ValueError("未能从前端 JS 中匹配到教材数据密文！")
 
@@ -170,9 +198,9 @@ class PepCatalog:
         data_json = json.loads(plaintext.decode("utf-8"))
         items = data_json.get("data", [])
 
-        # 标准化学段名称
+        # 精确标准化学段名称
         for b in items:
-            b["xd"] = normalize_xd(b.get("xd", ""))
+            b["xd"] = map_book_xd(b)
 
         # 缓存到本地
         with open(cls.LOCAL_CACHE, "w", encoding="utf-8") as f:
@@ -284,49 +312,70 @@ class PepDownloader:
         os.makedirs(self.output_dir, exist_ok=True)
 
     def _solve_slider(self, page, log_cb: Optional[Callable[[str], None]] = None) -> bool:
-        """检测并破解阿里云 WAF 滑块"""
-        try:
-            page.wait_for_selector(".btn_slide", timeout=3000)
-        except Exception:
-            pass
+        """检测并高可靠破解阿里云 WAF 滑块（支持自动重试与防伪装刷新）"""
+        for check_i in range(3):
+            try:
+                page.wait_for_selector(".btn_slide", timeout=2500)
+            except Exception:
+                pass
 
-        slider = page.query_selector(".btn_slide")
-        if not slider:
-            return True
+            slider = page.query_selector(".btn_slide")
+            if not slider:
+                # 若无滑块，直接返回通过
+                return True
 
-        msg = "[*] 检测到阿里云 WAF 滑块验证码，正在自动滑动破解..."
-        if log_cb: log_cb(msg)
-        else: print(msg)
+            msg = f"[*] 检测到阿里云 WAF 滑块验证码 (第 {check_i + 1} 次尝试)，正在自动滑动破解..."
+            if log_cb: log_cb(msg)
+            else: print(msg)
 
-        box = slider.bounding_box()
-        scale = page.query_selector(".nc_scale")
-        scale_box = scale.bounding_box() if scale else None
+            box = slider.bounding_box()
+            scale = page.query_selector(".nc_scale")
+            scale_box = scale.bounding_box() if scale else None
 
-        if not (box and scale_box):
-            return False
+            if not (box and scale_box):
+                time.sleep(1)
+                continue
 
-        start_x = box["x"] + box["width"] / 2
-        start_y = box["y"] + box["height"] / 2
-        distance = scale_box["width"] - box["width"] + 5
-        target_x = start_x + distance
+            start_x = box["x"] + box["width"] / 2
+            start_y = box["y"] + box["height"] / 2
+            distance = scale_box["width"] - box["width"] + 5
 
-        page.mouse.move(start_x, start_y)
-        time.sleep(random.uniform(0.15, 0.3))
-        page.mouse.down()
-        time.sleep(0.1)
+            page.mouse.move(start_x, start_y)
+            time.sleep(random.uniform(0.15, 0.25))
+            page.mouse.down()
+            time.sleep(0.05)
 
-        steps = random.randint(35, 45)
-        for i in range(1, steps + 1):
-            t = i / steps
-            progress = 1 - (1 - t) * (1 - t)
-            curr_x = start_x + distance * progress + random.uniform(-1, 1)
-            curr_y = start_y + math.sin(t * math.pi) * 2 + random.uniform(-1, 1)
-            page.mouse.move(curr_x, curr_y)
-            time.sleep(random.uniform(0.01, 0.025))
+            # 模拟高拟真人手轨迹：带初段加速与末端微晃动
+            steps = random.randint(28, 38)
+            for i in range(1, steps + 1):
+                t = i / steps
+                # 缓动函数
+                progress = math.sin(t * (math.pi / 2))
+                curr_x = start_x + distance * progress + random.uniform(-0.8, 0.8)
+                curr_y = start_y + random.uniform(-1.2, 1.2)
+                page.mouse.move(curr_x, curr_y)
+                time.sleep(random.uniform(0.012, 0.022))
 
-        time.sleep(0.1)
-        page.mouse.up()
-        time.sleep(2.5)
+            # 确保推到最右侧
+            page.mouse.move(start_x + distance + random.randint(2, 6), start_y)
+            time.sleep(0.08)
+            page.mouse.up()
+            time.sleep(2.5)
+
+            if page.query_selector(".btn_slide") is None:
+                res_msg = "[+] 滑块验证通过！"
+                if log_cb: log_cb(res_msg)
+                else: print(res_msg)
+                return True
+            else:
+                # 若滑块仍在，检查是否有“点击刷新”按钮
+                reload_btn = page.query_selector(".nc_iconfont.btn_refresh, .errloading a, .nc-lang-cnt a")
+                if reload_btn:
+                    try:
+                        reload_btn.click()
+                        time.sleep(2)
+                    except Exception:
+                        pass
 
         success = page.query_selector(".btn_slide") is None
         res_msg = "[+] 滑块验证通过！" if success else "[-] 滑块验证未通过。"
@@ -337,16 +386,38 @@ class PepDownloader:
     def download_book(self,
                       book_id: str,
                       custom_title: Optional[str] = None,
+                      sub_dir: Optional[str] = None,
                       progress_cb: Optional[Callable[[int, int, str], None]] = None,
-                      log_cb: Optional[Callable[[str], None]] = None) -> Optional[str]:
+                      log_cb: Optional[Callable[[str], None]] = None,
+                      skip_if_exists: bool = True,
+                      clean_temp: bool = True,
+                      quiet: bool = False) -> Optional[str]:
         """
         下载单本教材
         :param book_id: 教材 ID（如 1284001101241）
         :param custom_title: 自定义书名
+        :param sub_dir: 子目录（如 "小学（六三学制）/一年级"），实现层级分类保存
         :param progress_cb: 进度回调 (current_page, total_pages, status_text)
         :param log_cb: 日志回调 (log_text)
+        :param skip_if_exists: 若本地已存在完整 PDF 则自动跳过
+        :param clean_temp: 合成 PDF 后自动删除该书的切片图片以节约磁盘空间
+        :param quiet: 静默模式，不打印各页下载过程，仅在关键节点或报错时提示
         :return: 生成的 PDF 绝对路径
         """
+        target_dir = os.path.join(self.output_dir, sub_dir) if sub_dir else self.output_dir
+        os.makedirs(target_dir, exist_ok=True)
+
+        # 检查是否已存在完整 PDF（断点续传/跳过机制）
+        if custom_title and skip_if_exists:
+            safe_title = re.sub(r'[\/:*?"<>|]', '_', custom_title).strip()
+            target_pdf = os.path.join(target_dir, f"{safe_title}.pdf")
+            if os.path.exists(target_pdf) and os.path.getsize(target_pdf) > 50000:
+                skip_msg = f"[✔] 本地已存在 《{safe_title}》 ({os.path.getsize(target_pdf) // 1024} KB)，自动跳过。"
+                if log_cb: log_cb(skip_msg)
+                else: print(skip_msg)
+                if progress_cb: progress_cb(1, 1, "本地已存在，跳过")
+                return target_pdf
+
         book_url = f"https://book.pep.com.cn/{book_id}/"
         init_msg = f"[*] 准备加载教材: {book_url}"
         if log_cb: log_cb(init_msg)
@@ -411,6 +482,15 @@ class PepDownloader:
             safe_title = re.sub(r'[\/:*?"<>|]', '_', final_title).strip()
             total_pages = config_info.get("total", 0)
 
+            # 再次检查目标 PDF 是否存在
+            target_pdf = os.path.join(target_dir, f"{safe_title}.pdf")
+            if skip_if_exists and os.path.exists(target_pdf) and os.path.getsize(target_pdf) > 50000:
+                skip_msg = f"[✔] 本地已存在 《{safe_title}》 ({os.path.getsize(target_pdf) // 1024} KB)，自动跳过。"
+                if log_cb: log_cb(skip_msg)
+                else: print(skip_msg)
+                browser.close()
+                return target_pdf
+
             if total_pages == 0:
                 err = f"[-] 无法读取教材总页数 (URL: {page.url})"
                 if log_cb: log_cb(err)
@@ -418,11 +498,12 @@ class PepDownloader:
                 browser.close()
                 return None
 
-            info_msg = f"[+] 教材: 《{safe_title}》 | 总页数: {total_pages} 页"
-            if log_cb: log_cb(info_msg)
-            else: print(info_msg)
+            if not quiet:
+                info_msg = f"[+] 教材: 《{safe_title}》 | 总页数: {total_pages} 页"
+                if log_cb: log_cb(info_msg)
+                else: print(info_msg)
 
-            temp_dir = os.path.join(".", "temp_pages", book_id)
+            temp_dir = os.path.join(get_base_dir(), "temp_pages", book_id)
             os.makedirs(temp_dir, exist_ok=True)
             image_files = []
 
@@ -439,7 +520,7 @@ class PepDownloader:
                             continue
 
                 download_success = False
-                for retry in range(3):
+                for retry in range(4):
                     res = page.evaluate("""async (url) => {
                         try {
                             const resp = await fetch(url);
@@ -467,38 +548,45 @@ class PepDownloader:
                                 f.write(raw_data)
                             image_files.append(img_path)
                             size_kb = len(raw_data) // 1024
-                            log_text = f"  -> [{page_num}/{total_pages}] 下载成功 ({size_kb} KB)"
-                            if log_cb: log_cb(log_text)
-                            else: print(log_text)
+                            if not quiet:
+                                log_text = f"  -> [{page_num}/{total_pages}] 下载成功 ({size_kb} KB)"
+                                if log_cb: log_cb(log_text)
+                                else: print(log_text)
                             if progress_cb: progress_cb(page_num, total_pages, f"正在下载: 第 {page_num}/{total_pages} 页")
                             download_success = True
                             break
 
-                    # 触发 WAF 验证码拦截
-                    warn_msg = f"  [!] 第 {page_num} 页触发验证码，自动刷新破解..."
+                    # 触发 WAF 验证码或网络抖动拦截
+                    warn_msg = f"  [!] 《{safe_title}》第 {page_num} 页触发验证码/拦截 (重试 {retry + 1}/4)，自动重新过盾..."
                     if log_cb: log_cb(warn_msg)
                     else: print(warn_msg)
-                    page.goto(book_url, referer="https://jc.pep.com.cn/", wait_until="networkidle")
-                    time.sleep(1.5)
-                    self._solve_slider(page, log_cb)
-                    time.sleep(3)
+
+                    # 重新刷新/导航并破解滑块
+                    try:
+                        page.goto(book_url, referer="https://jc.pep.com.cn/", wait_until="load")
+                        time.sleep(2)
+                        self._solve_slider(page, log_cb)
+                        time.sleep(2.5)
+                    except Exception:
+                        time.sleep(3)
 
                 if not download_success:
-                    fail_msg = f"  -> [{page_num}/{total_pages}] 下载失败！"
+                    fail_msg = f"  -> 《{safe_title}》[{page_num}/{total_pages}] 下载失败！"
                     if log_cb: log_cb(fail_msg)
                     else: print(fail_msg)
 
-                time.sleep(random.uniform(0.35, 0.65))
+                time.sleep(random.uniform(0.15, 0.35))
 
             browser.close()
 
             if not image_files:
                 return None
 
-            output_pdf = os.path.join(self.output_dir, f"{safe_title}.pdf")
-            merge_msg = f"[*] 正在合成 PDF: {os.path.basename(output_pdf)} ..."
-            if log_cb: log_cb(merge_msg)
-            else: print(merge_msg)
+            output_pdf = target_pdf
+            if not quiet:
+                merge_msg = f"[*] 正在合成 PDF: {os.path.basename(output_pdf)} ..."
+                if log_cb: log_cb(merge_msg)
+                else: print(merge_msg)
             if progress_cb: progress_cb(total_pages, total_pages, "正在合成 PDF 文件...")
 
             pil_images = []
@@ -518,6 +606,13 @@ class PepDownloader:
             rest_images = pil_images[1:]
             first_im.save(output_pdf, "PDF", resolution=100.0, save_all=True, append_images=rest_images)
 
+            # 下载合成完毕后，自动清理单页图片切片，释放磁盘空间
+            if clean_temp and os.path.exists(temp_dir):
+                try:
+                    shutil.rmtree(temp_dir)
+                except Exception:
+                    pass
+
             done_msg = f"[✔] PDF 生成成功: {output_pdf}"
             if log_cb: log_cb(done_msg)
             else: print(done_msg)
diff --git a/webui.py b/webui.py
index a92c2e5..9b278de 100644
--- a/webui.py
+++ b/webui.py
@@ -17,7 +17,7 @@ from fastapi import FastAPI, BackgroundTasks, WebSocket, WebSocketDisconnect
 from fastapi.responses import HTMLResponse, JSONResponse
 from fastapi.staticfiles import StaticFiles
 
-from pep_core import PepCatalog, PepDownloader, XD_ORDER, XK_ORDER_PREFIX, NJ_ORDER, get_base_dir
+from pep_core import PepCatalog, PepDownloader, XD_ORDER, XK_ORDER_PREFIX, NJ_ORDER, get_base_dir, normalize_xd
 
 if hasattr(sys.stdout, "reconfigure"):
     sys.stdout.reconfigure(encoding="utf-8")
@@ -104,13 +104,22 @@ class TaskManager:
                 self.log(txt)
 
             try:
+                xd = normalize_xd(book_to_download.get("xd", "其他学段"))
+                nj = book_to_download.get("nj", "通用").strip() or "通用"
+                safe_xd = re.sub(r'[\/:*?"<>|]', '_', xd).strip()
+                safe_nj = re.sub(r'[\/:*?"<>|]', '_', nj).strip()
+                sub_dir = os.path.join(safe_xd, safe_nj)
+
                 self.log(f"==================================================")
-                self.log(f"[*] 开始下载教材: 《{book_to_download.get('title')}》")
+                self.log(f"[*] 开始下载教材: [{safe_xd}/{safe_nj}] 《{book_to_download.get('title')}》")
                 downloader.download_book(
                     book_id=book_to_download["id"],
                     custom_title=book_to_download.get("title"),
+                    sub_dir=sub_dir,
                     progress_cb=progress_callback,
-                    log_cb=log_callback
+                    log_cb=log_callback,
+                    skip_if_exists=True,
+                    clean_temp=True
                 )
             except Exception as e:
                 self.log(f"[-] 下载异常: {e}")