// ==UserScript==
// @name         智慧树助手
// @namespace    zhs.bzm
// @version      1.0.4
// @author       BZM
// @description  智慧树视频 + 答题，题库对接 tk.n1t.cn
// @license      MIT
// @icon         https://pp.myapp.com/ma_icon/0/icon_10559400_1789717606/96
// @match        *://*.zhihuishu.com/*
// @match        *://*.polymas.com/*
// @require      https://cdn.bootcdn.net/ajax/libs/jquery/3.7.1/jquery.min.js
// @require      https://cdn.bootcdn.net/ajax/libs/limonte-sweetalert2/11.1.0/sweetalert2.all.min.js
// @require      https://cdn.bootcdn.net/ajax/libs/blueimp-md5/2.19.0/js/md5.min.js
// @grant        unsafeWindow
// @grant        GM_xmlhttpRequest
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_info
// @grant        GM_openInTab
// @connect      tk.n1t.cn
// @connect      tk.swk.tw
// @run-at       document-end
// ==/UserScript==

(function () {
  'use strict';

  /*********************************
   * 1. BZM 反检测层（原样保留）
   *********************************/
  (function () {
    'use strict';
    try {
      Object.defineProperty(document, 'visibilityState', { get: function () { return 'visible'; }, configurable: true });
      Object.defineProperty(document, 'hidden', { get: function () { return false; }, configurable: true });
      Object.defineProperty(document, 'webkitVisibilityState', { get: function () { return 'visible'; }, configurable: true });
      Object.defineProperty(document, 'webkitHidden', { get: function () { return false; }, configurable: true });
      document.addEventListener('visibilitychange', function (e) { e.stopImmediatePropagation(); }, true);
      document.addEventListener('webkitvisibilitychange', function (e) { e.stopImmediatePropagation(); }, true);
    } catch (e) {}
    try {
      window.requestAnimationFrame = function (cb) { return setTimeout(function () { cb(Date.now()); }, 16); };
      window.cancelAnimationFrame = function (id) { clearTimeout(id); };
    } catch (e) {}
    try { Object.defineProperty(navigator, 'webdriver', { get: function () { return undefined; }, configurable: true }); } catch (e) {}
    try { if (!window.chrome) window.chrome = {}; if (!window.chrome.runtime) window.chrome.runtime = {}; } catch (e) {}
    try {
      document.hasFocus = function () { return true; };
      window.onblur = null;
      window.onfocus = null;
      ['blur', 'focus', 'pagehide', 'pageshow'].forEach(function (evt) {
        window.addEventListener(evt, function (e) { e.stopImmediatePropagation(); }, true);
      });
    } catch (e) {}
    try {
      var _origQuery = navigator.permissions && navigator.permissions.query;
      if (_origQuery) {
        navigator.permissions.query = function (desc) {
          if (desc && desc.name === 'notifications') return Promise.resolve({ state: 'prompt', onchange: null });
          return _origQuery.call(navigator.permissions, desc);
        };
      }
    } catch (e) {}
    try {
      var _OrigMO = window.MutationObserver;
      if (_OrigMO) {
        window.MutationObserver = function (callback) {
          var wrapped = function (mutations, observer) {
            var delay = 50 + Math.random() * 150;
            setTimeout(function () { callback(mutations, observer); }, delay);
          };
          return new _OrigMO(wrapped);
        };
        window.MutationObserver.prototype = _OrigMO.prototype;
      }
    } catch (e) {}
    try {
      var _origAppendChild = Node.prototype.appendChild;
      Node.prototype.appendChild = function (node) {
        var result = _origAppendChild.call(this, node);
        try {
          if (node && node.tagName === 'IFRAME') {
            setTimeout(function () { patchIframe(node); }, 500);
            node.addEventListener('load', function () { patchIframe(node); });
          }
        } catch (e) {}
        return result;
      };
      function keepAliveIframeWindow(win) {
        try {
          if (!win || !win.document) return;
          Object.defineProperty(win.document, 'visibilityState', { get: function () { return 'visible'; }, configurable: true });
          Object.defineProperty(win.document, 'hidden', { get: function () { return false; }, configurable: true });
          Object.defineProperty(win.document, 'webkitVisibilityState', { get: function () { return 'visible'; }, configurable: true });
          Object.defineProperty(win.document, 'webkitHidden', { get: function () { return false; }, configurable: true });
          win.document.hasFocus = function () { return true; };
          win.document.addEventListener('visibilitychange', function (e) { e.stopImmediatePropagation(); }, true);
          win.document.addEventListener('webkitvisibilitychange', function (e) { e.stopImmediatePropagation(); }, true);
          ['blur', 'focus', 'pagehide', 'pageshow'].forEach(function (evt) {
            win.document.addEventListener(evt, function (e) { e.stopImmediatePropagation(); }, true);
          });
          if (win.navigator) {
            try { Object.defineProperty(win.navigator, 'webdriver', { get: function () { return undefined; }, configurable: true }); } catch (e) {}
          }
        } catch (e) {}
      }
      function patchIframe(iframe) {
        try {
          var d = iframe.contentDocument || (iframe.contentWindow && iframe.contentWindow.document);
          if (!d) return;
          keepAliveIframeWindow(iframe.contentWindow);
          if (d.__antiDetectPatched) return;
          d.__antiDetectPatched = true;
          Object.defineProperty(d, 'visibilityState', { get: function () { return 'visible'; }, configurable: true });
          Object.defineProperty(d, 'hidden', { get: function () { return false; }, configurable: true });
          Object.defineProperty(d, 'webkitVisibilityState', { get: function () { return 'visible'; }, configurable: true });
          Object.defineProperty(d, 'webkitHidden', { get: function () { return false; }, configurable: true });
          d.hasFocus = function () { return true; };
          d.addEventListener('visibilitychange', function (e) { e.stopImmediatePropagation(); }, true);
          d.addEventListener('webkitvisibilitychange', function (e) { e.stopImmediatePropagation(); }, true);
          ['blur', 'focus', 'pagehide', 'pageshow'].forEach(function (evt) {
            d.addEventListener(evt, function (e) { e.stopImmediatePropagation(); }, true);
          });
          try {
            if (d.defaultView && d.defaultView.navigator) {
              Object.defineProperty(d.defaultView.navigator, 'webdriver', { get: function () { return undefined; }, configurable: true });
            }
          } catch (e) {}
        } catch (e) {}
      }
      setTimeout(function () { document.querySelectorAll('iframe').forEach(patchIframe); }, 1000);
    } catch (e) {}
    console.log('[笨蛋树助手] 反检测层已加载');
  })();

  /*********************************
   * 2. BZM 配置管理（原样保留）
   *********************************/
  var SettingsManager = {
    _defaults: {
      showBox: 1,
      showMaskImg: 1,
      videoRate: 1.5,
      forceRate: 0,
      reviewMode: 0,
      handleVideoQuiz: 1,
      answerInterval: 2000,
      autoAnswer: 1,
      autoSubmit: 0,
      autoChangeChapter: 1,
      insertAnswer: 1,
      showProgressBar: 1,
      accuracy: 80
    },
    get: function (key) {
      var gv = GM_getValue('setting_' + key, null);
      if (gv !== null && gv !== undefined) { this._defaults[key] = gv; return gv; }
      var stored = localStorage.getItem('setting_' + key);
      if (stored !== null) {
        if (stored === 'true') return true;
        if (stored === 'false') return false;
        if (!isNaN(parseFloat(stored)) && isFinite(stored)) return parseFloat(stored);
        return stored;
      }
      return this._defaults[key];
    },
    set: function (key, value) {
      localStorage.setItem('setting_' + key, value);
      GM_setValue('setting_' + key, value);
      this._defaults[key] = value;
      return value;
    },
    load: function () {
      for (var key in this._defaults) {
        var v = this.get(key);
        if (v !== undefined) this._defaults[key] = v;
      }
      if (this._defaults.videoRate > 8) this._defaults.videoRate = 8;
      return this._defaults;
    },
    saveVideoRate: function (rate) { if (rate > 8) rate = 8; this.set('videoRate', rate); GM_setValue('videoRate', rate); },
    saveProgressBar: function (show) { this.set('showProgressBar', show ? 1 : 0); GM_setValue('showProgressBar', show ? 1 : 0); }
  };

  var CONFIG = SettingsManager.load();
  if (CONFIG.videoRate > 8) CONFIG.videoRate = 8;

  function updateConfig(key, value) {
    var oldValue = CONFIG[key];
    CONFIG[key] = SettingsManager.set(key, value);
    if (key === 'videoRate' && CONFIG.videoRate > 8) { CONFIG.videoRate = 8; SettingsManager.set('videoRate', 8); }
    log('⚙️ 配置已更新: ' + key + ' = ' + value + (oldValue !== value ? ' (已生效)' : ''), 'blue');
  }

  function getRandomInterval() {
    var base = CONFIG.answerInterval || 2000;
    return Math.floor(base * (0.8 + Math.random() * 0.7));
  }

  function getPlaybackRate(maxWithoutForce) {
    maxWithoutForce = maxWithoutForce || 2;
    var rate = Number(CONFIG.videoRate) || 1;
    if (CONFIG.forceRate) return Math.min(rate, 16);
    return Math.min(rate, maxWithoutForce);
  }

  function forceRateOn() { return !!CONFIG.forceRate; }

  /*********************************
   * 3. BZM 日志（原样保留）
   *********************************/
  var logQueue = [];
  var logTimer = null;

  function getTopLogContainer() {
    try {
      var topDoc = top.document;
      var container = topDoc.getElementById('ne-21log');
      if (container) return $(container);
      container = document.getElementById('ne-21log');
      if (container) return $(container);
      return null;
    } catch (e) { return null; }
  }

  function flushLogs() {
    if (logQueue.length === 0) return;
    var container = getTopLogContainer();
    if (container && container.length) {
      var logsToShow = logQueue.slice();
      logQueue = [];
      for (var i = logsToShow.length - 1; i >= 0; i--) { container.prepend(logsToShow[i]); }
      container.scrollTop(0);
    }
    if (logTimer) { clearTimeout(logTimer); logTimer = null; }
  }

  function scheduleFlushLogs() { if (logTimer) return; logTimer = setTimeout(flushLogs, 100); }

  function log(str, color) {
    var time = new Date().toLocaleTimeString();
    var logHtml = '<div style="border-top:1px solid #eee;padding:6px 0;"><span style="color:' + (color || '#000') + ';">[' + time + '] ' + str + '</span></div>';
    logQueue.push(logHtml);
    scheduleFlushLogs();
    console.log('[笨蛋树助手][' + time + ']', str);
  }

  /******************************
   * 4. BZM 题库 API（原样保留）
   *********************************/
  var API_SERVERS = [
    { url: 'https://tk.n1t.cn/api/search.php', name: '接口1' },
    { url: 'https://tk.swk.tw/api/search.php', name: '接口2' }
  ];
  var currentServerIndex = 0;

  function getApiKey() { return GM_getValue('api_key', ''); }
  function hasApiKey() { var key = getApiKey(); return key && key.trim() !== ''; }

  function getQuotaInfo() {
    return {
      remaining: GM_getValue('quota_remaining', 0),
      freeRemaining: GM_getValue('quota_free_remaining', 0),
      rechargeBalance: GM_getValue('quota_recharge_balance', 0),
      todayFreeUsage: GM_getValue('quota_today_free_usage', 0)
    };
  }
  var quotaInfo = getQuotaInfo();

  function saveQuotaInfo() {
    GM_setValue('quota_remaining', quotaInfo.remaining);
    GM_setValue('quota_free_remaining', quotaInfo.freeRemaining);
    GM_setValue('quota_recharge_balance', quotaInfo.rechargeBalance);
    GM_setValue('quota_today_free_usage', quotaInfo.todayFreeUsage);
  }

  function updateQuotaInfo(newQuotaInfo) {
    if (newQuotaInfo) {
      if (newQuotaInfo.remaining !== undefined) quotaInfo.remaining = newQuotaInfo.remaining;
      if (newQuotaInfo.free_remaining !== undefined) quotaInfo.freeRemaining = newQuotaInfo.free_remaining;
      if (newQuotaInfo.recharge_balance !== undefined) quotaInfo.rechargeBalance = newQuotaInfo.recharge_balance;
      if (newQuotaInfo.today_free_usage !== undefined) quotaInfo.todayFreeUsage = newQuotaInfo.today_free_usage;
      saveQuotaInfo();
      updateQuotaDisplay();
    }
  }

  function updateQuotaDisplay() {
    try {
      var targetDoc = top.document;
      if (!targetDoc.querySelector('#quotaInfo')) targetDoc = document;
      var $quotaInfo = $('#quotaInfo', targetDoc);
      if ($quotaInfo.length) {
        if (quotaInfo.remaining > 0) $quotaInfo.html('📊 剩余次数: ' + quotaInfo.remaining + ' | 免费: ' + quotaInfo.freeRemaining);
        else if (quotaInfo.remaining === 0 && hasApiKey()) $quotaInfo.html('⚠️ 次数已用完 | <a href="https://tk.n1t.cn" target="_blank" style="color:#2196F3;">点击充值</a>');
        else if (!hasApiKey()) $quotaInfo.html('⚠️ 请先设置API密钥');
        else $quotaInfo.html('📊 剩余次数: 加载中...');
      }
    } catch (e) {}
  }

  function hasEnoughQuota() {
    quotaInfo = getQuotaInfo();
    return hasApiKey() && (quotaInfo.remaining > 0 || quotaInfo.freeRemaining > 0);
  }

  function getSubmitDecision() {
    if (CONFIG.autoSubmit && hasEnoughQuota()) return { action: 'submit', reason: '自动提交' };
    return { action: 'save', reason: '自动保存' };
  }

  function testApi(key, serverIndex) {
    return new Promise(function (resolve, reject) {
      var apiUrl = API_SERVERS[serverIndex || 0].url;
      var formData = 'question=' + encodeURIComponent('test') +
        '&key=' + encodeURIComponent(key) +
        '&type=' + encodeURIComponent('单选题') +
        '&options=' + encodeURIComponent(JSON.stringify(['选项A', '选项B']));
      var timeoutId = setTimeout(function () { reject('请求超时'); }, 10000);
      GM_xmlhttpRequest({
        method: 'POST', url: apiUrl,
        headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
        data: formData, timeout: 10000,
        onload: function (xhr) {
          clearTimeout(timeoutId);
          try {
            var res = JSON.parse(xhr.responseText);
            if (res.code == 1 || res.code == 400) {
              if (res.quota_info) updateQuotaInfo(res.quota_info);
              resolve(res);
            } else reject(res.msg || '密钥无效');
          } catch (e) { reject('解析响应失败'); }
        },
        onerror: function () { clearTimeout(timeoutId); reject('网络请求失败'); },
        ontimeout: function () { clearTimeout(timeoutId); reject('请求超时'); }
      });
    });
  }

  function getAnswer(typeStr, questionText, optionsData, retryCount) {
    retryCount = retryCount || 0;
    return new Promise(function (resolve, reject) {
      var apiKey = getApiKey();
      if (!apiKey || apiKey.trim() === '') { log('❌ 请先设置API密钥', 'red'); reject('NO_API_KEY'); return; }
      quotaInfo = getQuotaInfo();
      if (quotaInfo.remaining <= 0 && quotaInfo.freeRemaining <= 0) { log('❌ API次数已用完', 'red'); reject('QUOTA_EXHAUSTED'); return; }
      var typeText = TYPE_STR_TO_API_NAME[typeStr] || '单选题';
      function tryServer(index) {
        if (index >= API_SERVERS.length) { log('❌ 所有接口均失败', 'red'); reject('ALL_FAIL'); return; }
        var apiUrl = API_SERVERS[index].url;
        var formData = 'question=' + encodeURIComponent(questionText) +
          '&key=' + encodeURIComponent(apiKey) +
          '&type=' + encodeURIComponent(typeText);
        if (optionsData && optionsData.length) formData += '&options=' + encodeURIComponent(JSON.stringify(optionsData));
        var timeoutId = setTimeout(function () { tryServer(index + 1); }, 15000);
        GM_xmlhttpRequest({
          method: 'POST', url: apiUrl,
          headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
          data: formData, timeout: 15000,
          onload: function (xhr) {
            clearTimeout(timeoutId);
            try {
              var res = JSON.parse(xhr.responseText);
              if (res.code == 1 && res.data) {
                if (res.quota_info) updateQuotaInfo(res.quota_info);
                currentServerIndex = index;
                GM_setValue('current_server_index', index);
                log('✅ [' + typeText + '] ' + res.data.substring(0, 100), 'purple');
                resolve(res.data);
              } else if (res.code == 400) { log('❌ ' + (res.msg || '密钥无效'), 'red'); reject('KEY_INVALID'); }
              else tryServer(index + 1);
            } catch (e) { tryServer(index + 1); }
          },
          onerror: function () { clearTimeout(timeoutId); tryServer(index + 1); },
          ontimeout: function () { clearTimeout(timeoutId); tryServer(index + 1); }
        });
      }
      tryServer(retryCount);
    });
  }

  /*********************************
   * 5. BZM 统一题型识别（原样保留）
   *********************************/
  var TYPE_TAG_RE = /【\s*[^】]{1,8}\s*】/;
  var TYPE_TAG_RE_M = /\[\s*[^\[\]]{1,8}\s*\]/;
  var TYPE_LABELS = [
    [/单选/, 'single'], [/多选/, 'multiple'], [/判断/, 'judge'],
    [/完型填空|完形填空/, 'cloze'], [/填空/, 'fill'], [/名词解释/, 'term'],
    [/听力/, 'listening'], [/阅读|材料题?/, 'reading'],
    [/简答|计算|分析|案例/, 'short'], [/论述/, 'essay'],
    [/分录/, 'entry'], [/排序/, 'sort'], [/连线|匹配/, 'match']
  ];
  var TYPE_TO_ID = {
    single: 0, multiple: 1, fill: 2, cloze: 2, term: 4,
    judge: 3, listening: 0, reading: 4,
    short: 4, essay: 4, entry: 4, sort: 4, match: 4, unknown: 4
  };
  var TYPE_STR_TO_API_NAME = {
    single: '单选题', multiple: '多选题', judge: '判断题',
    fill: '填空题', cloze: '填空题', term: '名词解释',
    listening: '听力题', reading: '阅读理解',
    short: '简答题', essay: '论述题', entry: '分录题',
    sort: '排序题', match: '连线题', unknown: '简答题'
  };
  var TYPE_TO_NAME = {
    single: '单选题', multiple: '多选题', fill: '填空题', cloze: '填空题',
    term: '名词解释', judge: '判断题', listening: '听力题', reading: '阅读理解',
    short: '简答题', essay: '论述题', entry: '分录题', sort: '排序题',
    match: '连线题', unknown: '简答题'
  };
  var CHOICE_ONLY_TYPES = ['single', 'multiple', 'judge', 'listening', 'reading'];
  var TEXT_ONLY_TYPES = ['fill', 'cloze', 'term', 'short', 'essay', 'entry'];

  function collectAnswerControls($block) {
    var out = [];
    $block.find('input[type=radio],input[type=checkbox],input[type=text],textarea,[contenteditable="true"]').each(function () {
      if (this.disabled || this.readOnly) return;
      if (this.type === 'hidden') return;
      if ($(this).closest('#ne-21box,#ne-21log,#video-progress-bar').length) return;
      var ph = (this.placeholder || '') + '|' + (this.name || '') + '|' + (this.id || '');
      if (/search|captcha|verify|code|keyword|kwd/i.test(ph)) return;
      out.push(this);
    });
    return out;
  }

  function detectQuestionType($block, ctx) {
    ctx = ctx || {};
    var blockText = '';
    try {
      var $clone = $block.clone();
      $clone.find('input,textarea,select,button,script,style').remove();
      blockText = ($clone.text() || '').replace(/\s+/g, ' ').trim();
    } catch (e) { blockText = ($block.text() || '').replace(/\s+/g, ' ').trim(); }

    var tag = (blockText.match(TYPE_TAG_RE) || blockText.match(TYPE_TAG_RE_M) || [''])[0];
    if (tag) {
      for (var i = 0; i < TYPE_LABELS.length; i++) {
        if (TYPE_LABELS[i][0].test(tag)) {
          var tagType = TYPE_LABELS[i][1];
          var ctrlsForCheck = collectAnswerControls($block);
          var hasChoice0 = ctrlsForCheck.some(function (c) { return c.type === 'radio' || c.type === 'checkbox'; }) || $block.find('input[type=radio],input[type=checkbox]').length > 0;
          var hasText0 = ctrlsForCheck.some(function (c) {
            return c.tagName === 'TEXTAREA' || c.isContentEditable || (c.tagName === 'INPUT' && (c.type === 'text' || c.type === ''));
          }) || $block.find('textarea').length > 0;
          var choiceOnly0 = hasChoice0 && !hasText0;
          var textOnly0 = hasText0 && !hasChoice0;
          if (choiceOnly0 && TEXT_ONLY_TYPES.indexOf(tagType) !== -1) break;
          if (textOnly0 && CHOICE_ONLY_TYPES.indexOf(tagType) !== -1) break;
          return tagType;
        }
      }
    }

    var ctrls = collectAnswerControls($block);
    var hasCheckbox = ctrls.some(function (c) { return c.type === 'checkbox'; }) || $block.find('input[type=checkbox]').length > 0;
    var hasRadio = ctrls.some(function (c) { return c.type === 'radio'; }) || $block.find('input[type=radio]').length > 0;
    var hasText = ctrls.some(function (c) {
      return c.tagName === 'TEXTAREA' || c.isContentEditable || (c.tagName === 'INPUT' && (c.type === 'text' || c.type === ''));
    }) || $block.find('textarea').length > 0;

    if (hasCheckbox) return 'multiple';
    if (hasRadio) {
      var $radios = $block.find('input[type=radio]');
      if ($radios.length === 2) {
        var joined = '';
        $radios.each(function () {
          var t = ($(this).closest('label').text() || $(this).text() || '').trim();
          joined += t;
        });
        joined = joined.replace(/[\s（()）.,．、,:：A-Za-z]/g, '');
        if (/^(对|错|正确|错误|是|否|√|×|TF|TRUEFALSE)+$/i.test(joined)) return 'judge';
      }
      return 'single';
    }
    if (hasText) return 'fill';
    return 'unknown';
  }

  function detectQuestionTypeInfo($block, ctx) {
    var t = detectQuestionType($block, ctx);
    return {
      typeStr: t,
      typeId: TYPE_TO_ID[t] !== undefined ? TYPE_TO_ID[t] : 4,
      typeName: TYPE_TO_NAME[t] || '简答题'
    };
  }

  /*********************************
   * 6. BZM 通用工具（原样保留）
   *********************************/
  function cleanOptionText(text) {
    if (!text) return text;
    var cleaned = text.replace(/<[^>]*>/g, '');
    cleaned = cleaned.replace(/^[A-Z][\s]*[.、．）)\s]+/, '');
    cleaned = cleaned.replace(/^\([A-Z]\)[\s]*/, '');
    cleaned = cleaned.replace(/^（[A-Z]）[\s]*/, '');
    cleaned = cleaned.replace(/^[:\s\-_]+/, '');
    return cleaned.trim();
  }

  function cleanQuizOptionText(text) {
    if (!text) return '';
    var cleaned = String(text).replace(/<[^>]*>/g, '').replace(/&nbsp;/g, ' ').trim();
    for (var round = 0; round < 3; round++) {
      var before = cleaned;
      cleaned = cleaned.replace(/^\s*[A-Za-z]\s*[.、．,，:：)）]+\s*/, '');
      cleaned = cleaned.replace(/^\s*[（(]\s*[A-Za-z]\s*[）)]\s*/, '');
      cleaned = cleaned.replace(/^\s*\d+\s*[.、．,，:：)）]+\s*/, '');
      cleaned = cleaned.replace(/^\s*[（(]\s*\d+\s*[）)]\s*/, '');
      cleaned = cleaned.replace(/^\s*[A-Za-z]\s+/, '');
      if (cleaned === before) break;
    }
    return cleaned.trim();
  }

  function tidyString(s) {
    if (!s) return null;
    var cleaned = s.replace(/<(?!img).*?>/g, '').replace(/^【.*?】\s*/, '').replace(/\s*（\d+\.\d+分）$/, '').trim().replace(/&nbsp;/g, '');
    return cleanOptionText(cleaned);
  }

  function tidyQuestion(s) {
    if (!s) return null;
    var cleaned = s.replace(/<(?!img).*?>/g, '').replace(/^【.*?】\s*/, '').replace(/\s*（\d+\.\d+分）$/, '').replace(/^\d+[.、]?/, '').trim();
    return cleanOptionText(cleaned);
  }

  function normalizeForCompare(text) {
    if (!text) return '';
    return text.toUpperCase().replace(/[^\u4e00-\u9fa5A-Z0-9]/g, '').trim();
  }

  function splitAnswer(answer) {
    if (!answer) return [];
    var parts = answer.split(/[#]+/).map(function (a) { return a.trim(); }).filter(function (a) { return a !== ''; });
    if (parts.length === 0 && answer.trim() !== '') return [answer.trim()];
    return parts;
  }

  function matchByLengthGuard(normalizedOpts, normalizedAnswerArr, strictOnly) {
    var hitIdx = [];
    normalizedOpts.forEach(function (opt, i) {
      for (var j = 0; j < normalizedAnswerArr.length; j++) {
        if (opt === normalizedAnswerArr[j] && hitIdx.indexOf(i) === -1) { hitIdx.push(i); break; }
      }
    });
    if (strictOnly) return hitIdx;
    if (hitIdx.length < normalizedAnswerArr.length) {
      normalizedOpts.forEach(function (opt, i) {
        if (hitIdx.indexOf(i) !== -1) return;
        for (var j = 0; j < normalizedAnswerArr.length; j++) {
          var na = normalizedAnswerArr[j];
          if (!na) continue;
          if (opt.indexOf(na) !== -1 && (opt.length - na.length) <= 1) { hitIdx.push(i); break; }
          if (na.indexOf(opt) !== -1 && (na.length - opt.length) <= 1) { hitIdx.push(i); break; }
        }
      });
    }
    if (hitIdx.length > normalizedAnswerArr.length) hitIdx = hitIdx.slice(0, normalizedAnswerArr.length);
    return hitIdx;
  }

  function matchMultiChoiceIndices(optsText, answer) {
    var ansArr = splitAnswer(answer);
    var normalizedOpts = optsText.map(function (opt) { return normalizeForCompare(opt); });
    var normalizedAnsArr = ansArr.map(function (a) { return normalizeForCompare(a); }).filter(function (a) { return a !== ''; });
    return matchByLengthGuard(normalizedOpts, normalizedAnsArr, false);
  }

  function isTaskCompleted(task) {
    if (!task) return false;
    if (task.isPassed === true) return true;
    if (task.status === 'completed' || task.status === 'finished') return true;
    if (task.finished === true) return true;
    return false;
  }

  /*********************************
   * 7. 引擎层别名表（洗后 ABC → 指向 BZM 原函数）
   *********************************/
  var classifyQ = detectQuestionType;
  var qFetch = getAnswer;
  var randGap = getRandomInterval;
  var pickRate = getPlaybackRate;
  var multiPickIdx = matchMultiChoiceIndices;

  function sleep(ms) { return new Promise(function (r) { setTimeout(r, ms * 1000); }); }

  function awaitEl(fn, timeout, interval) {
    timeout = timeout || 10000; interval = interval || 300;
    return new Promise(function (resolve, reject) {
      var start = Date.now();
      var t = setInterval(function () {
        var r;
        try { r = typeof fn === 'function' ? fn() : document.querySelector(fn); } catch (e) { r = null; }
        if (r) { clearInterval(t); resolve(r); return; }
        if (Date.now() - start > timeout) { clearInterval(t); reject(new Error('等待超时')); }
      }, interval);
    });
  }

  function pinRate(video, rate) {
    try { video.playbackRate = rate; } catch (e) {}
    try {
      Object.defineProperty(video, 'playbackRate', {
        configurable: true,
        get: function () { return rate; },
        set: function () {}
      });
    } catch (e) {}
  }

  /*********************************
   * 8. 进度条（洗后命名）
   *********************************/
  var currentProgressBar = null;
  var currentVideoName = null;

  function unmountBar() {
    if (currentProgressBar) { try { $(currentProgressBar).remove(); } catch (e) {} currentProgressBar = null; }
    try {
      var td = top.document;
      var ex = td.querySelector('#video-progress-bar');
      if (ex) $(ex).remove();
    } catch (e) {}
  }

  function formatDuration(seconds) {
    if (!seconds || seconds < 0) return '00:00';
    var total = Math.max(0, Math.floor(Number(seconds) || 0));
    var hours = Math.floor(total / 3600);
    var minutes = Math.floor((total % 3600) / 60);
    var secs = total % 60;
    var pad = function (n) { return String(n).padStart(2, '0'); };
    if (hours > 0) return pad(hours) + ':' + pad(minutes) + ':' + pad(secs);
    return pad(minutes) + ':' + pad(secs);
  }

  function mountBar(videoName, duration) {
    if (!CONFIG.showProgressBar) return;
    unmountBar();
    currentVideoName = videoName;
    var targetDoc = top.document;
    var barHtml = '<div id="video-progress-bar" style="position:fixed;bottom:80px;right:20px;width:300px;background:rgba(0,0,0,0.85);border-radius:12px;padding:12px 15px;z-index:100000;font-family:system-ui,sans-serif;box-shadow:0 4px 15px rgba(0,0,0,0.3);">' +
      '<div style="display:flex;justify-content:space-between;margin-bottom:8px;">' +
      '<span style="color:#fff;font-size:13px;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;" title="' + videoName + '">🎬 ' + videoName + '</span>' +
      '<span id="progress-percent" style="color:#4CAF50;font-size:12px;">0%</span></div>' +
      '<div style="width:100%;height:8px;background:rgba(255,255,255,0.2);border-radius:4px;overflow:hidden;">' +
      '<div id="progress-bar-fill" style="width:0%;height:100%;background:linear-gradient(90deg,#4CAF50,#8BC34A);border-radius:4px;transition:width 0.3s;"></div></div>' +
      '<div style="display:flex;justify-content:space-between;margin-top:8px;">' +
      '<span id="progress-current" style="color:#ccc;font-size:11px;">00:00</span>' +
      '<span id="progress-remaining" style="color:#ccc;font-size:11px;">剩余: --:--</span>' +
      '<span style="color:#ccc;font-size:11px;">' + formatDuration(duration) + '</span></div>' +
      '<div style="margin-top:8px;text-align:center;">' +
      '<span style="color:#4CAF50;font-size:10px;">● 学习中</span>' +
      '<span style="color:#888;font-size:10px;margin-left:8px;">⚡ ' + pickRate().toFixed(2) + 'x</span></div></div>';
    try { $(targetDoc.body).append(barHtml); currentProgressBar = targetDoc.querySelector('#video-progress-bar'); }
    catch (e) { $(document.body).append(barHtml); currentProgressBar = document.querySelector('#video-progress-bar'); }
  }

  function syncBar(cur, dur) {
    if (!currentProgressBar || !dur) return;
    var p = Math.min(100, Math.round((cur / dur) * 100));
    var r = Math.max(0, dur - cur);
    var f = currentProgressBar.querySelector('#progress-bar-fill');
    var pe = currentProgressBar.querySelector('#progress-percent');
    var ce = currentProgressBar.querySelector('#progress-current');
    var re = currentProgressBar.querySelector('#progress-remaining');
    if (f) f.style.width = p + '%';
    if (pe) pe.textContent = p + '%';
    if (ce) ce.textContent = formatDuration(cur);
    if (re) re.textContent = '剩余: ' + formatDuration(r);
  }

  /*********************************
   * 9. 弹题卡片（洗后结构）
   *********************************/
  var popCard = {
    match: function (node) {
      if (!node || node.nodeType !== 1) return false;
      var h = node.querySelector && (node.querySelector('.TiMu') || node.querySelector('.ans-videoquiz') ||
        node.querySelector('.ans-videoquiz-title') || node.querySelector('.videoquiz') ||
        node.querySelector('.ans-videoquiz-opt'));
      var i = node.querySelector && (node.querySelector('input[type=radio]') ||
        node.querySelector('input[type=checkbox]') || node.querySelector('.ans-videoquiz-opt label'));
      return !!(h && i);
    },
    read: function (el) {
      var root = el.querySelector('.TiMu') || el.querySelector('.ans-videoquiz-title') ||
        el.querySelector('.videoquiz-title') || el.querySelector('.ans-videoquiz') || el;
      var title = (root.textContent || '').trim();
      var arr = [];
      var ins = el.querySelectorAll('input[type=radio],input[type=checkbox]');
      if (ins.length) {
        ins.forEach(function (x, k) {
          var lb = x.closest('label') || x.parentElement;
          var raw = (lb.textContent || '').trim();
          arr.push({ i: k, t: cleanQuizOptionText(raw), r: raw, el: x });
        });
      } else {
        el.querySelectorAll('.ans-videoquiz-opt li,.ans-videoquiz-opt label').forEach(function (x, k) {
          var raw = (x.textContent || '').trim();
          arr.push({ i: k, t: cleanQuizOptionText(raw), r: raw, el: x });
        });
      }
      var type = classifyQ($(el), {});
      return { title: title, options: arr, typeStr: type, el: el };
    },
    tap: function (o) {
      try {
        o.el && o.el.click && o.el.click();
        var lb = o.el && o.el.closest && o.el.closest('label');
        if (lb && lb.click) lb.click();
      } catch (e) {}
    },
    write: function (card, ans) {
      if (!card.options.length) return false;
      if (card.typeStr === 'judge') {
        var yes = /对|正确|是|√|T|ri/i.test(ans);
        var k = yes ? 0 : 1;
        if (card.options[k]) { this.tap(card.options[k]); return true; }
      }
      if (card.typeStr === 'multiple') {
        var hit = multiPickIdx(card.options.map(function (o) { return o.t; }), ans);
        if (hit.length) { var self = this; hit.forEach(function (i) { self.tap(card.options[i]); }); return true; }
        return false;
      }
      var arr = splitAnswer(ans);
      var hit2 = false;
      var self2 = this;
      card.options.forEach(function (o) {
        var no = normalizeForCompare(o.t);
        arr.forEach(function (a) { if (no === normalizeForCompare(a)) { self2.tap(o); hit2 = true; } });
      });
      if (hit2) return true;
      card.options.forEach(function (o) {
        var no = normalizeForCompare(o.t);
        arr.forEach(function (a) {
          var na = normalizeForCompare(a);
          if ((no.indexOf(na) !== -1 && no.length - na.length <= 1) ||
              (na.indexOf(no) !== -1 && na.length - no.length <= 1)) { self2.tap(o); hit2 = true; }
        });
      });
      return hit2;
    },
    roll: function (card) {
      var arr = card.options || [];
      if (!arr.length) return false;
      if (card.typeStr === 'multiple') {
        var n = 1 + Math.floor(Math.random() * arr.length);
        var pool = arr.slice();
        for (var k = 0; k < n && pool.length; k++) {
          var pi = Math.floor(Math.random() * pool.length);
          this.tap(pool[pi]); pool.splice(pi, 1);
        }
        return true;
      }
      this.tap(arr[Math.floor(Math.random() * arr.length)]);
      return true;
    },
    fire: function (el) {
      var b = el.querySelector('.ans-videoquiz-submit,.submit-btn,.confirm,button[type=submit]');
      if (b) setTimeout(function () { b.click(); }, 400 + Math.random() * 500);
    },
    resume: function (el, v) {
      var done = false;
      function go() { if (done) return; done = true; if (v && v.paused) v.play().catch(function () {}); }
      try {
        var mo = new MutationObserver(function () { if (!el.isConnected) { mo.disconnect(); go(); } });
        mo.observe(el.parentNode || document.body, { childList: true, subtree: true });
      } catch (e) {}
      var t = setInterval(function () { if (!el.isConnected || el.style.display === 'none') { clearInterval(t); go(); } }, 500);
      setTimeout(function () { clearInterval(t); go(); }, 8000);
    }
  };

  function resolvePopQuiz(el) {
    if (!CONFIG.handleVideoQuiz || el.dataset.__zsx === '1') return;
    el.dataset.__zsx = '1';
    var doc = el.ownerDocument || document;
    var v = doc.querySelector('video');
    if (v && !v.paused) v.pause();
    var card = popCard.read(el);
    var optsData = card.typeStr === 'judge' ? ['对', '错'] : card.options.map(function (o) { return o.t; });
    qFetch(card.typeStr, card.title, optsData).then(function (a) {
      if (!a || a === '暂无答案' || !popCard.write(card, a)) popCard.roll(card);
      popCard.fire(el);
      popCard.resume(el, v);
    }).catch(function () {
      popCard.roll(card);
      popCard.fire(el);
      popCard.resume(el, v);
    });
  }

  function watchModal(doc) {
    if (!CONFIG.handleVideoQuiz || !doc || !doc.body) return;
    doc.querySelectorAll('.ans-videoquiz,.TiMu,.videoquiz').forEach(function (el) {
      if (popCard.match(el)) resolvePopQuiz(el);
    });
    var mo = new MutationObserver(function (ms) {
      ms.forEach(function (m) {
        m.addedNodes.forEach(function (n) {
          if (n.nodeType !== 1) return;
          if (popCard.match(n)) resolvePopQuiz(n);
          else if (n.querySelectorAll) {
            n.querySelectorAll('.ans-videoquiz,.TiMu,.videoquiz').forEach(function (x) { if (popCard.match(x)) resolvePopQuiz(x); });
          }
        });
      });
    });
    mo.observe(doc.body, { childList: true, subtree: true });
    doc.__zsxWatch = true;
  }

  function keepModalWatch() {
    setInterval(function () {
      if (!CONFIG.handleVideoQuiz) return;
      document.querySelectorAll('iframe').forEach(function (f) {
        var d;
        try { d = f.contentDocument; } catch (e) { return; }
        if (!d || !d.body || !d.querySelector('video') || d.__zsxWatch) return;
        watchModal(d);
      });
    }, 3000);
  }

  function loopModalCheck(doc) {
    setInterval(function () {
      if (!CONFIG.handleVideoQuiz) return;
      try {
        doc.querySelectorAll('.ans-videoquiz,.TiMu,.videoquiz').forEach(function (el) {
          if (popCard.match(el) && el.dataset.__zsx !== '1') resolvePopQuiz(el);
        });
      } catch (e) {}
    }, 1500);
  }

  /*********************************
   * 10. 视频页（共享课 studyvideoh5）
   *********************************/
  function courseRuntime() {
    var ctx = { v: null, timer: null, busy: false };

    function bridge() {
      var s = document.createElement('script');
      s.textContent = "(function(){addEventListener('message',function(e){if(e.data&&e.data.__k==='zhs_q'){try{var d=document.querySelector('#playTopic-dialog');if(!d||!d.__vue__){postMessage({__k:'zhs_r',ok:0},'*');return}var vm=d.__vue__.$parent.$parent;if(!vm||!vm.topicInfo){postMessage({__k:'zhs_r',ok:0},'*');return}var dto=vm.topicInfo.lessonTestQuestionUseInterfaceDtos;if(!dto||!dto[0]){postMessage({__k:'zhs_r',ok:0},'*');return}var opts=dto[0].testQuestion.questionOptions;var hits=dto[0].answerUs;if(!opts||!hits){postMessage({__k:'zhs_r',ok:0},'*');return}var n=0;opts.forEach(function(o,i){if(hits.indexOf(o.sortUs)!==-1){setTimeout(function(){vm.topicClickQot(opts[i])},800*n);n++}});var delay=Math.max(n*800+2000,5000);setTimeout(function(){vm.testDialog=false;postMessage({__k:'zhs_r',ok:1,n:n},'*')},delay)}catch(err){postMessage({__k:'zhs_r',ok:0,err:err.message},'*')}}})})();";
      (document.head || document.documentElement).appendChild(s);
      s.remove();
    }

    function clrOverlay() {
      var m = document.querySelector('.v-modal'); if (m) m.remove();
      var w = document.querySelector('.brush-warning'); if (w) w.remove();
    }

    function isDone(el) { return !!(el && el.querySelector('.time_icofinish')); }

    function waitVideo(timeout) {
      timeout = timeout || 15000;
      return new Promise(function (resolve, reject) {
        var start = Date.now();
        var t = setInterval(function () {
          var v = document.querySelector('video');
          if (v) { clearInterval(t); resolve(v); return; }
          if (Date.now() - start > timeout) { clearInterval(t); reject(new Error('等待视频超时')); }
        }, 500);
      });
    }

    function tap(el) { if (el) el.dispatchEvent(new MouseEvent('click', { bubbles: true })); }

    function curTitle() {
      var t = document.querySelector('li.video.current_play .catalogue_title');
      return (t && t.innerText && t.innerText.trim()) || '未知小节';
    }

    function chapterLabel(el) {
      var t = el.querySelector('.catalogue_title');
      var n = el.querySelector('.hour');
      var tt = (t && t.innerText && t.innerText.trim()) || '';
      var nn = (n && n.textContent && n.textContent.trim()) || '';
      return nn ? nn + ' ' + tt : tt;
    }

    function playNow() {
      clrOverlay();
      ctx.v = document.querySelector('#vjs_container_html5_api');
      if (!ctx.v) return;
      ctx.v.muted = true;
      ctx.v.play().catch(function () {});
    }

    function bindVideo() {
      playNow();
      if (!ctx.v) return;
      ctx.v.addEventListener('play', function () {
        log(curTitle() + ' - 视频开始播放', 'blue');
        var r = forceRateOn() ? pickRate(16) : pickRate(2);
        pinRate(ctx.v, r);
        log('已设置倍速: ' + r + 'x', 'blue');
        mountBar(curTitle(), ctx.v.duration || 0);
      }, { once: true });
      ctx.v.addEventListener('playing', clrOverlay);
      ctx.v.addEventListener('pause', function () {
        if (ctx.v.ended || ctx.busy) return;
        if (!document.querySelector('#playTopic-dialog')) log('视频暂停，下次轮询恢复..', 'orange');
      });
      ctx.v.addEventListener('ended', function () {
        log('当前视频播放完毕', 'green');
        unmountBar();
        advance();
      });
      ctx.v.ontimeupdate = function () { syncBar(ctx.v.currentTime, ctx.v.duration || 1); };
    }

    function closeQuizDlg() {
      var d = document.querySelector('#playTopic-dialog');
      var b = d && d.querySelector('.el-dialog__headerbtn');
      if (b) tap(b);
    }

    function handlePopQuiz() {
      if (ctx.busy) return Promise.resolve();
      var dlg = document.querySelector('#playTopic-dialog');
      if (!dlg) return Promise.resolve();
      var headerText = dlg.querySelector('.el-dialog__header h4');
      headerText = (headerText && headerText.innerText) || '';
      if (headerText.indexOf('给你出题啦') === -1 && headerText.indexOf('弹题测验') === -1) return Promise.resolve();
      var tt = dlg.querySelector('.radio .topic-title');
      if (tt && (tt.querySelector('.right') || tt.querySelector('.error'))) {
        ctx.busy = true;
        log('弹题已作答过，关闭..', 'blue');
        return sleep(2).then(function () {
          closeQuizDlg();
          ctx.busy = false;
          return sleep(1).then(playNow);
        });
      }
      log('检测到弹题，自动作答..', 'purple');
      ctx.busy = true;
      return new Promise(function (resolve) {
        var to = setTimeout(function () {
          window.removeEventListener('message', handler);
          log('弹题作答超时，关闭..', 'orange');
          closeQuizDlg();
          ctx.busy = false;
          setTimeout(playNow, 1000);
          resolve();
        }, 20000);
        function handler(e) {
          if (!e.data || e.data.__k !== 'zhs_r') return;
          clearTimeout(to);
          window.removeEventListener('message', handler);
          if (e.data.ok) log('弹题自动完成（' + e.data.n + '题）', 'green');
          else { log('弹题失败' + (e.data.err ? ': ' + e.data.err : '') + '，关闭..', 'orange'); closeQuizDlg(); }
          ctx.busy = false;
          setTimeout(playNow, 1000);
          resolve();
        }
        window.addEventListener('message', handler);
        window.postMessage({ __k: 'zhs_q' }, '*');
      });
    }

    function onFloat() {
      var vis = Array.from(document.querySelectorAll('.el-dialog')).find(function (d) {
        return d.parentElement && d.parentElement.style.display !== 'none';
      });
      if (!vis) { clrOverlay(); return; }
      if (vis.ariaLabel === '温馨提示') {
        var b = vis.querySelector('.el-button.btn');
        if (b && b.textContent === '我知道了') {
          tap(b);
          log('已关闭温馨提示', 'blue');
          setTimeout(playNow, 500);
          return;
        }
      }
      if (vis.ariaLabel === '弹题测验') handlePopQuiz();
    }

    function findNext() {
      var all = Array.from(document.querySelectorAll('li.video'));
      var cur = document.querySelector('li.video.current_play');
      if (!cur || !all.length) return null;
      var idx = all.indexOf(cur);
      var ordered = all.slice(idx + 1).concat(all.slice(0, idx));
      return ordered.find(function (el) { return !isDone(el); });
    }

    function advance() {
      if (!CONFIG.autoChangeChapter) { log('自动切换章节未开启', 'orange'); return; }
      var cur = document.querySelector('li.video.current_play .catalogue_title');
      cur = (cur && cur.innerText) || '当前章节';
      log('「' + cur + '」已完成', 'green');
      var next = findNext();
      if (next) {
        log('跳转: ' + chapterLabel(next), 'blue');
        tap(next);
        setTimeout(launch, 5000);
      } else {
        log('所有章节已完成！', 'green');
        if (ctx.timer) { clearInterval(ctx.timer); ctx.timer = null; }
      }
    }

    function tick() {
      var cur = document.querySelector('.video.current_play');
      if (!cur) return;
      if (isDone(cur)) { advance(); return; }
      var v = document.querySelector('#vjs_container_html5_api');
      if (v && v.paused && !v.ended && !ctx.busy) onFloat();
    }

    function launch() {
      clrOverlay();
      waitVideo(10000).then(function (v) {
        ctx.v = v;
        bindVideo();
        if (!ctx.timer) ctx.timer = setInterval(tick, 2000);
      }).catch(function (e) {
        log(e.message + '，跳转下一节..', 'orange');
        advance();
      });
    }

    function start() {
      log('进入智慧树视频学习页面，开始工作..', 'green');
      bridge();
      sleep(5).then(function () {
        var close = document.querySelector('.dialog-read .iconguanbi');
        if (close) {
          var p = close.closest && close.closest('.dialog-read');
          if (p && getComputedStyle(p).display !== 'none') { tap(close); log('已关闭阅读弹窗', 'blue'); }
        }
        onFloat();
        launch();
      });
    }
    start();
  }

  /*********************************
   * 11. AI智慧课
   *********************************/
  function aiCourseRuntime() {
    log('进入智慧树AI智慧课页面，开始工作..', 'green');
    var RES = { VIDEO: 'video', BOOK: 'book', PPT: 'ppt', TEXT: 'text', LINK: 'link', UNKNOWN: 'unknown' };
    var runId = 0, v = null, urlW = null;

    function tap(el) {
      if (!el) return;
      if (typeof el.click === 'function') { el.click(); return; }
      el.dispatchEvent(new MouseEvent('click', { bubbles: true }));
    }
    function getCards() { return Array.from(document.querySelectorAll('[class*="card-container"]')); }
    function getActive() { return getCards().find(function (c) { return c.classList.contains('active'); }); }
    function cardTitle(c) { return (c && c.querySelector('.common-text')) || (c && c.querySelector('.video-title')) || (c && c.querySelector('.basic-info-video-card-container')) || c; }
    function cardType(c) {
      var ib = c && c.querySelector('.icon-box');
      var cls = (ib && ib.className) || '';
      if (cls.indexOf('video') !== -1) return RES.VIDEO;
      if (cls.indexOf('book') !== -1) return RES.BOOK;
      if (cls.indexOf('ppt') !== -1 || cls.indexOf('other') !== -1) return RES.PPT;
      if (cls.indexOf('text') !== -1) return RES.TEXT;
      if (cls.indexOf('link') !== -1) return RES.LINK;
      return RES.UNKNOWN;
    }
    function cardDone(c) {
      var i = c && c.querySelector('.finished-icon');
      if (!i) return false;
      var t = (i.textContent || '').trim();
      return !t || t.indexOf('已完成') !== -1;
    }
    function curName() {
      var s = document.querySelector('.point-title-text');
      s = (s && s.textContent && s.textContent.trim()) || '';
      if (!s) {
        var ss = document.querySelector('.section-item-collapse-info.active .section-item-collapse-title');
        s = (ss && ss.textContent && ss.textContent.trim()) || '未知章节';
      }
      var c = getActive();
      var c1 = c && c.querySelector('.video-title');
      var c2 = c && c.querySelector('.common-text');
      var cn = (c1 && c1.textContent && c1.textContent.trim()) || (c2 && c2.textContent && c2.textContent.trim()) || '未知小节';
      return s + '-' + cn;
    }
    function nextCard() {
      var cs = getCards();
      if (!cs.length) return null;
      var i = cs.findIndex(function (c) { return c.classList.contains('active'); });
      var start = i >= 0 ? i + 1 : 0;
      for (var k = start; k < cs.length; k++) if (!cardDone(cs[k])) return cs[k];
      return null;
    }
    function parseProgress(s) {
      var t = s && s.querySelector('.collapse-info-progress .progress-text');
      t = (t && t.textContent) || '';
      var m = t.replace(/\s/g, '').match(/(\d+)\/(\d+)/);
      if (!m) return null;
      return { progress: +m[1], total: +m[2] };
    }
    function nextSection() {
      var ss = Array.from(document.querySelectorAll('.section-item-collapse-info'));
      var active = ss.find(function (s) { return s.classList.contains('active'); });
      var unf = ss.map(function (s) { return { s: s, p: parseProgress(s) }; })
        .filter(function (x) { return x.p && x.p.progress < x.p.total; });
      if (!unf.length) return null;
      var i = unf.findIndex(function (x) { return x.s === active; });
      if (i >= 0) return unf[i + 1] && unf[i + 1].s;
      return unf[0] && unf[0].s;
    }
    function setActive(c) {
      getCards().forEach(function (x) { x.classList.remove('active'); });
      if (c) c.classList.add('active');
    }
    function tapCard(c) {
      tap(cardTitle(c));
      setActive(c);
      return sleep(1);
    }
    function cleanV() { if (v) { v.onpause = null; v.onended = null; v = null; } }

    function processNext(rid) {
      if (rid !== runId) return Promise.resolve();
      var n = nextCard();
      if (n) {
        var c1 = n.querySelector('.common-text');
        var c2 = n.querySelector('.video-title');
        var t = (c1 && c1.textContent && c1.textContent.trim()) || (c2 && c2.textContent && c2.textContent.trim()) || '下一资源';
        log('跳转资源: ' + t, 'blue');
        return tapCard(n).then(function () { return sleep(3); }).then(doWork);
      }
      return nextSectionJob(rid);
    }

    function processVideo(rid) {
      return new Promise(function (resolve) {
        var wrapper = document.querySelector('.video-player-wrapper');
        if (!wrapper || wrapper.style.display === 'none') {
          log('视频未加载，跳过', 'orange');
          sleep(3).then(function () { processNext(rid).then(resolve); });
          return;
        }
        awaitEl(function () {
          var m = document.querySelector('video,audio');
          return m && m.src ? m : null;
        }, 8000).then(function (m) {
          if (rid !== runId) { resolve(); return; }
          v = m;
          v.currentTime = Math.max(v.currentTime, 1);
          v.volume = 0;
          v.muted = true;
          var r = pickRate(2);
          pinRate(v, r);
          log('已设置倍速: ' + r + 'x', 'blue');
          v.play().catch(function () {});
          log('学习中: ' + curName(), 'green');
          mountBar(curName(), v.duration || 0);
          v.ontimeupdate = function () { syncBar(v.currentTime, v.duration || 1); };
          v.onpause = function () {
            if (rid !== runId || !v || v.ended) return;
            sleep(1).then(function () { v && v.play && v.play().catch(function () {}); });
          };
          v.onended = function () {
            if (rid !== runId) return;
            log('视频完成', 'green');
            unmountBar();
            sleep(3).then(function () { processNext(rid).then(resolve); });
          };
        }).catch(function (e) {
          log('未找到视频，跳转下一资源: ' + e.message, 'orange');
          sleep(3).then(function () { processNext(rid).then(resolve); });
        });
      });
    }

    function processPpt(rid) {
      return new Promise(function (resolve) {
        var c = document.querySelector('.preview-section .ppt-preview-container');
        if (!c) { processPassive(rid, 'PPT资源').then(resolve); return; }
        function getPage() {
          var cu = parseInt((c.querySelector('.page-current') || {}).textContent, 10) || 0;
          var to = parseInt((c.querySelector('.page-total') || {}).textContent, 10) || 0;
          return [cu, to];
        }
        var p = getPage();
        var cu = p[0], to = p[1];
        if (!cu || !to) { processPassive(rid, 'PPT资源').then(resolve); return; }
        log('PPT共 ' + to + ' 页，从 ' + cu + ' 页开始', 'blue');
        function step() {
          if (rid !== runId || cu >= to) {
            log('PPT翻页完成', 'green');
            processNext(rid).then(resolve);
            return;
          }
          tap(c.querySelector('.next-page-btn'));
          sleep(4).then(function () {
            var q = getPage();
            cu = q[0]; to = q[1];
            step();
          });
        }
        step();
      });
    }

    function processBook(rid) {
      return new Promise(function (resolve) {
        awaitEl('.preview-section .book-mark .book-container', 5000).then(function () {
          var c = document.querySelector('.preview-section .book-mark .book-container');
          if (!c) { processPassive(rid, '电子书资源').then(resolve); return; }
          log('发现电子书，阅读中..', 'blue');
          function step() {
            if (rid !== runId || c.scrollTop + c.clientHeight >= c.scrollHeight - 2) {
              log('电子书完成', 'green');
              processNext(rid).then(resolve);
              return;
            }
            c.scrollTo({ top: Math.min(c.scrollTop + Math.max(c.clientHeight * 0.8, 200), c.scrollHeight), behavior: 'smooth' });
            sleep(1.5).then(step);
          }
          step();
        }).catch(function () { processPassive(rid, '电子书资源').then(resolve); });
      });
    }

    function processPassive(rid, label) {
      if (rid !== runId) return Promise.resolve();
      log(label + '已处理', 'blue');
      return sleep(3).then(function () { return processNext(rid); });
    }

    function doWork() {
      var rid = ++runId;
      cleanV();
      return sleep(5).then(function () {
        if (rid !== runId) return;
        var c = getActive();
        if (c && cardDone(c)) {
          log('当前已完成，跳过', 'blue');
          c = nextCard();
          if (!c) return nextSectionJob(rid);
          return tapCard(c).then(function () { return sleep(3); }).then(function () {
            var c2 = getActive() || c;
            return dispatch(c2, rid);
          });
        }
        if (!c) c = nextCard();
        if (!c && getCards().length) return nextSectionJob(rid);
        if (!c) { log('无学习资源，跳转下一章节', 'orange'); return nextSectionJob(rid); }
        return dispatch(c, rid);
      });
    }

    function dispatch(c, rid) {
      var t = cardType(c);
      log('资源类型: ' + t, 'blue');
      if (t === RES.VIDEO) return processVideo(rid);
      if (t === RES.BOOK) return processBook(rid);
      if (t === RES.PPT) return processPpt(rid);
      return processPassive(rid, '当前资源');
    }

    function nextSectionJob(rid) {
      if (rid !== runId) return Promise.resolve();
      var n = nextSection();
      if (!n) { log('所有必学章节已完成！', 'green'); return Promise.resolve(); }
      var t = n.querySelector('.section-item-collapse-title');
      t = (t && t.textContent && t.textContent.trim()) || '下一章节';
      log('跳转: ' + t, 'blue');
      tap(n);
      return sleep(5).then(doWork);
    }

    function dismiss() {
      var d = document.querySelector('.read-note-dialog');
      if (d && getComputedStyle(d).display !== 'none') {
        var b = d.querySelector('button');
        if (b) { tap(b); log('已关闭阅读弹窗', 'blue'); }
      }
    }

    function watchUrl() {
      if (urlW) clearInterval(urlW);
      var prev = location.href;
      urlW = setInterval(function () {
        if (location.href === prev) return;
        prev = location.href;
        if (location.href.indexOf('learnPage') !== -1 || location.href.indexOf('singleCourse') !== -1) {
          log('URL变化，重新初始化..', 'blue');
          doWork();
        }
      }, 1500);
    }

    function start() {
      if (location.href.indexOf('singleCourse') !== -1) {
        log('请点击任意章节开始学习..', 'orange');
        watchUrl();
        return;
      }
      sleep(6).then(function () {
        dismiss();
        awaitEl('.section-item-collapse-info', 15000).catch(function () { log('章节列表加载超时..', 'orange'); });
        watchUrl();
        doWork();
      });
    }
    start();
  }

  /*********************************
   * 12. 新共享课
   *********************************/
  function plusCourseRuntime() {
    log('进入智慧树新共享课页面，开始工作..', 'green');
    var v = null, quizT = null, finishT = null, visT = null;
    var switching = false, busyQuiz = false, visWarn = false;

    function tap(el) {
      if (!el) return Promise.resolve(false);
      el.scrollIntoView && el.scrollIntoView({ behavior: 'smooth', block: 'center' });
      return sleep(0.2).then(function () {
        el.click && el.click();
        el.dispatchEvent && el.dispatchEvent(new MouseEvent('click', { bubbles: true }));
        return true;
      });
    }
    function rate() { return pickRate(2); }
    function courseName() {
      var e = document.querySelector('.top-back-box > span:nth-child(2), .course-name');
      var t = (e && e.textContent && e.textContent.trim()) || '';
      return t.replace(/^课程名称[:：]\s*/, '') || '未知课程';
    }
    function items() { return Array.from(document.querySelectorAll('.child-main')).filter(function (el) { return el.parentElement && el.parentElement.querySelector('.child-time'); }); }
    function cur() { return items().find(function (el) { return el.classList.contains('current'); }); }
    function title(i) { var t = i && i.parentElement && i.parentElement.textContent; return (t && t.replace(/\s+/g, ' ').trim()) || '未知章节'; }
    function done(i) { return !!(i && i.parentElement && i.parentElement.querySelector('.finish-icon')); }
    function next() {
      var its = items().filter(function (i) { return !done(i); });
      if (!its.length) return null;
      var c = cur();
      var i = its.indexOf(c);
      return i >= 0 ? its[i + 1] : its[0];
    }
    function cleanV() { if (v) { v.onpause = null; v.onended = null; v = null; } }

    function handleQuiz() {
      if (busyQuiz) return Promise.resolve();
      var d = document.querySelector('.ai-test-question-wrapper');
      if (!d) return Promise.resolve();
      busyQuiz = true;
      var done2 = d.querySelector('.done');
      var close = d.querySelector('.close-box');
      if (done2) return tap(close).then(function () { return sleep(1).then(function () { busyQuiz = false; }); });
      var opts = Array.from(d.querySelectorAll('.options .option'));
      var p = Promise.resolve();
      if (opts.length) p = p.then(function () { return tap(opts[Math.floor(Math.random() * opts.length)]); }).then(function () { return sleep(1); });
      return p.then(function () {
        return tap(document.querySelector('.submit-btn .submits'));
      }).then(function () { return sleep(1); }).then(function () { return tap(close); })
      .then(function () { log('随堂练习已处理', 'green'); })
      .then(function () { return sleep(1); })
      .then(function () { busyQuiz = false; });
    }

    function fixBar() {
      var b = document.querySelector('.controlsBar');
      if (b) { b.style.display = 'block'; b.style.zIndex = '2'; }
    }

    function play() {
      cleanV();
      fixBar();
      return awaitEl(function () {
        var m = document.querySelector('video, audio');
        return m && m.src ? m : null;
      }, 15000).then(function (m) {
        v = m;
        v.currentTime = Math.max(v.currentTime, 1);
        v.volume = 0;
        v.muted = true;
        var r = rate();
        pinRate(v, r);
        log('学习中: ' + title(cur()), 'green');
        log('已设置倍速: ' + r + 'x', 'blue');
        v.play().catch(function () {});
        mountBar(title(cur()), v.duration || 0);
        v.ontimeupdate = function () { syncBar(v.currentTime, v.duration || 1); };
        v.onpause = function () {
          if (!v || v.ended || switching || busyQuiz) return;
          setTimeout(function () { v && v.play && v.play().catch(function () {}); }, 1000);
        };
        v.onended = function () {
          if (switching) return;
          unmountBar();
          sleep(2).then(nextChapter);
        };
      }).catch(function (e) {
        log((e.message || '视频加载失败') + '，跳转下一节..', 'orange');
        sleep(2).then(nextChapter);
      });
    }

    function nextChapter() {
      if (switching) return Promise.resolve();
      if (!CONFIG.autoChangeChapter) { log('自动切换未开启', 'orange'); return Promise.resolve(); }
      switching = true;
      cleanV();
      var n = next();
      if (!n) { log('所有章节已完成！', 'green'); switching = false; return Promise.resolve(); }
      log('跳转: ' + title(n), 'blue');
      return tap(n).then(function () { return sleep(5); }).then(function () {
        switching = false;
        play();
      });
    }

    function startPoll() {
      quizT = setInterval(handleQuiz, 3000);
      finishT = setInterval(function () {
        if (switching) return;
        var c = cur();
        if (c && done(c)) nextChapter();
      }, 2000);
      visT = setInterval(function () {
        if (document.visibilityState === 'hidden' && !visWarn) { visWarn = true; log('页面不在前台..', 'orange'); }
        else if (document.visibilityState === 'visible') visWarn = false;
      }, 1000);
    }

    function start() {
      log('进入新共享课: ' + courseName(), 'green');
      sleep(5).then(function () {
        awaitEl('.child-main', 20000).catch(function () { log('章节列表加载超时..', 'orange'); });
        document.querySelectorAll('.el-overlay,.el-dialog').forEach(function (d) { d.style.display = 'none'; });
        startPoll();
        play();
      });
    }
    start();
  }

  /*********************************
   * 13. 融合课
   *********************************/
  function fusionCourseRuntime() {
    log('进入融合课页面，开始工作..', 'green');
    var RES = { VIDEO: 'video', PPT: 'ppt' };
    var v = null, idx = 0, list = [], curType = '', stopped = false;
    var chObs = null, resObs = null;

    function waitH(sel, t) {
      t = t || 15000;
      return new Promise(function (res, rej) {
        var s = Date.now();
        function c() {
          var el = document.querySelector(sel);
          if (el && el.offsetHeight > 0) { res(el); return; }
          if (Date.now() - s > t) { rej(new Error('超时')); return; }
          setTimeout(c, 100);
        }
        c();
      });
    }
    function tap(el) { if (el) el.dispatchEvent(new MouseEvent('click', { bubbles: true })); }
    function type(r) {
      var ft = r && r.querySelector('.file-type');
      if (!ft) return 'unknown';
      var sc = ft.classList[1];
      if (!sc) return 'unknown';
      var t = sc.split('-')[1];
      if (t === 'video') return RES.VIDEO;
      if (t === 'ppt' || t === 'other') return RES.PPT;
      return t || 'unknown';
    }
    function cards() { return Array.from(document.querySelectorAll('.resources-list .resources-item')); }
    function curCard() { return cards()[list[idx]] || null; }
    function detect() { var el = curCard(); curType = el ? type(el) : 'unknown'; }
    function findV(r, i) {
      r = r || 3; i = i || 500;
      return new Promise(function (res) {
        function c(k) {
          var m = document.querySelector('#container #vjs_container video');
          if (m) { res(m); return; }
          if (k <= 0) { res(null); return; }
          setTimeout(function () { c(k - 1); }, i);
        }
        c(r);
      });
    }
    function cleanV() {
      if (v) {
        v.removeEventListener('ended', onEnd);
        v.removeEventListener('playing', onPlay);
        v.removeEventListener('pause', onPause);
        v = null;
      }
    }
    function onPlay() { log('视频播放中..', 'blue'); }
    function onEnd() { log('视频完成', 'green'); unmountBar(); idx++; detect(); processNext(); }
    function onPause() {
      if (!v || v.ended) return;
      log('视频暂停，尝试恢复..', 'orange');
      setTimeout(function () { v && !v.ended && v.paused && v.play().catch(function () {}); }, 2000);
    }
    function processVideo() {
      log('发现视频，播放中..', 'blue');
      cleanV();
      return findV().then(function (m) {
        if (!m) { log('无视频元素，跳过', 'orange'); idx++; detect(); processNext(); return; }
        v = m;
        v.muted = true;
        var r = forceRateOn() ? pickRate(16) : pickRate(2);
        pinRate(v, r);
        log('已设置倍速: ' + r + 'x', 'blue');
        v.play().catch(function () {});
        mountBar('视频', v.duration || 0);
        v.ontimeupdate = function () { syncBar(v.currentTime, v.duration || 1); };
        v.addEventListener('playing', onPlay, { once: true });
        v.addEventListener('pause', onPause);
        v.addEventListener('ended', onEnd, { once: true });
      }).catch(function (e) {
        log('视频出错: ' + e.message, 'orange');
        idx++; detect(); processNext();
      });
    }
    function pptInfo() {
      var c = document.querySelector('.ppt-btn-container');
      if (!c) return [];
      var cu = parseInt((c.querySelector('.page-content .page-current') || {}).innerText, 10) || 0;
      var to = parseInt((c.querySelector('.page-content .page-total') || {}).innerText, 10) || 0;
      return cu && to ? [cu, to] : [];
    }
    function processPpt() {
      log('发现PPT，翻页中..', 'blue');
      var c = document.querySelector('.ppt-box .ppt-preview-container');
      if (!c) { idx++; detect(); processNext(); return Promise.resolve(); }
      var p = pptInfo();
      var cu = p[0], to = p[1];
      if (!cu || !to) { idx++; detect(); processNext(); return Promise.resolve(); }
      if (cu >= to) { log('PPT已到末尾', 'blue'); return sleep(2).then(function () { idx++; detect(); processNext(); }); }
      log('PPT ' + to + ' 页，从 ' + cu + ' 页开始', 'blue');
      function step() {
        if (stopped || cu >= to) {
          log('PPT完成', 'green');
          return sleep(2).then(function () { idx++; detect(); processNext(); });
        }
        tap(c.querySelector('.next-page-btn'));
        return sleep(4).then(function () { var q = pptInfo(); cu = q[0]; to = q[1]; return step(); });
      }
      return step();
    }
    function processNext() {
      if (idx >= list.length) { log('当前小节资源完成', 'green'); return nextSection(); }
      var el = curCard();
      if (!el) { idx++; detect(); return processNext(); }
      if (idx > 0) {
        var t = type(el);
        if (t !== 'video' && t !== 'ppt') { idx++; detect(); return processNext(); }
        tap(el.querySelector('.basic-info-video-card-container') || el);
        return sleep(3).then(function () {
          detect();
          log('资源 [' + (idx + 1) + '/' + list.length + '] 类型: ' + curType, 'blue');
          if (curType === RES.VIDEO) return processVideo();
          if (curType === RES.PPT) return processPpt();
          log('不支持: ' + curType, 'orange'); idx++; detect(); return processNext();
        });
      }
      detect();
      log('资源 [' + (idx + 1) + '/' + list.length + '] 类型: ' + curType, 'blue');
      if (curType === RES.VIDEO) return processVideo();
      if (curType === RES.PPT) return processPpt();
      log('不支持: ' + curType, 'orange'); idx++; detect(); return processNext();
    }
    function allChapters() { return Array.from(document.querySelectorAll('.inner-li li.clearfix')).filter(function (el) { return !el.classList.contains('child-chapter') && !el.classList.contains('forbidClick'); }); }
    function nextSection() {
      if (!CONFIG.autoChangeChapter) { log('自动切换未开启', 'orange'); return Promise.resolve(); }
      var cs = allChapters();
      var active = document.querySelector('.clearfix.video.activeNode');
      if (!active) { log('无当前章节', 'orange'); return Promise.resolve(); }
      var t = active.querySelector('.title');
      var c = (t && t.innerText && t.innerText.trim()) || '当前章节';
      log('「' + c + '」完成', 'green');
      var i = cs.indexOf(active);
      var n = cs[i + 1];
      if (n) {
        var nt = n.querySelector('.title');
        log('跳转: ' + ((nt && nt.innerText && nt.innerText.trim()) || '下一节'), 'blue');
        n.click();
        n.scrollIntoView({ behavior: 'smooth' });
        return Promise.resolve();
      }
      log('所有章节已完成！', 'green');
      return Promise.resolve();
    }
    function obsChapter() {
      var l = document.querySelector('.chapterList-box .list');
      if (!l) return;
      chObs = new MutationObserver(function (ms) {
        ms.forEach(function (m) {
          if (m.type !== 'attributes' || m.attributeName !== 'class') return;
          if (m.target.classList.contains('activeNode') || m.target.classList.contains('active')) onChg();
        });
      });
      chObs.observe(l, { attributes: true, attributeFilter: ['class'], subtree: true });
    }
    function obsRes() {
      var l = document.querySelector('.resource-warp .resources-list');
      if (!l) return;
      resObs = new MutationObserver(function (ms) {
        ms.forEach(function (m) {
          if (m.type !== 'attributes' || m.attributeName !== 'class') return;
          if (m.target.classList.contains('active')) onChg();
        });
      });
      resObs.observe(l, { attributes: true, attributeFilter: ['class'], subtree: true });
    }
    function onChg() { sleep(5).then(function () { stopped = false; initRes(); }); }
    function initRes() {
      if (resObs) resObs.disconnect();
      return awaitEl('.resource-warp .resources-list .resources-item', 15000).then(function () {
        var its = cards();
        if (!its.length) { log('无资源，跳转下一节..', 'orange'); return nextSection(); }
        var ai = its.findIndex(function (el) { return el.classList.contains('active'); });
        idx = ai >= 0 ? ai : 0;
        list = its.map(function (_, i) { return i; });
        log('发现 ' + list.length + ' 个资源', 'blue');
        obsRes();
        detect();
        return processNext();
      }).catch(function (e) {
        log('资源初始化失败: ' + e.message, 'orange');
        return nextSection();
      });
    }
    function dismiss() {
      var p = document.querySelector('.courseRemind.khfaPop');
      var b = p && p.querySelector('.header-slot-box .el-icon-error');
      if (b) { b.click(); log('已关闭提醒弹窗', 'blue'); }
    }
    function watchUrl() {
      var prev = location.href;
      setInterval(function () {
        if (location.href === prev) return;
        prev = location.href;
        if (location.href.indexOf('fusioncourseh5') !== -1 || location.href.indexOf('smartcoursestudent') !== -1 || location.href.indexOf('ai-smart-course-student-pro') !== -1) {
          log('URL变化，重初始化..', 'blue');
          setTimeout(initAll, 3000);
        }
      }, 1500);
    }
    function initAll() {
      return waitH('.preview-warp').catch(function () { log('页面加载超时..', 'orange'); }).then(function () {
        dismiss();
        obsChapter();
        return sleep(5);
      }).then(initRes);
    }
    function start() { sleep(6).then(function () { watchUrl(); initAll(); }); }
    start();
  }

  /*********************************
   * 14. 新形态 learnPage
   *********************************/
  function lpCourseRuntime() {
    log('进入新形态学习页面，开始工作..', 'green');
    var v = null, idx = 0, list = [];
    var RES = { VIDEO: 'video', BOOK: 'book', PPT: 'other' };

    function tap(el) { if (el) el.dispatchEvent(new MouseEvent('click', { bubbles: true })); }
    function type(r) {
      var ib = r && r.querySelector('.icon-box');
      if (!ib) return 'unknown';
      var cls = ib.className;
      if (cls.indexOf('video') !== -1) return RES.VIDEO;
      if (cls.indexOf('book') !== -1) return RES.BOOK;
      if (cls.indexOf('other') !== -1 || cls.indexOf('ppt') !== -1) return RES.PPT;
      return 'unknown';
    }
    function cards() { return Array.from(document.querySelectorAll('.resources-list .resources-item')); }
    function curCard() { return cards()[list[idx]] || null; }
    function detect() { var el = curCard(); return el ? type(el) : 'unknown'; }
    function onComplete() { idx++; return processNext(); }

    function processVideo() {
      log('发现视频，播放中..', 'blue');
      return sleep(5).then(function () {
        v = document.querySelector('.preview-section .video-player-wrapper video') || document.querySelector('.preview-section video');
        if (!v) { log('无视频元素，跳过', 'orange'); return onComplete(); }
        v.muted = true;
        v.play().catch(function () {});
        var r = forceRateOn() ? pickRate(16) : pickRate(2);
        pinRate(v, r);
        log('已设置倍速: ' + r + 'x', 'blue');
        mountBar('视频', v.duration || 0);
        v.ontimeupdate = function () { syncBar(v.currentTime, v.duration || 1); };
        v.addEventListener('pause', function () {
          if (v.ended) return;
          if (v.duration > 0 && v.duration - v.currentTime <= 1) { log('视频完成', 'green'); return onComplete(); }
          setTimeout(function () { v && !v.ended && v.paused && v.play().catch(function () {}); }, 2000);
        });
        v.addEventListener('ended', function () { log('视频完成', 'green'); unmountBar(); onComplete(); }, { once: true });
      });
    }

    function processPpt() {
      log('发现PPT，翻页中..', 'blue');
      return sleep(2).then(function () {
        var tt = document.querySelector('.preview-section .ppt-preview-container .page-total');
        var to = parseInt(tt && tt.innerText, 10) || 0;
        if (!to) { log('无法获取页数，跳过', 'orange'); return onComplete(); }
        var cs = document.querySelectorAll('.catalogue-container .div-img-container');
        var cu = Array.from(cs).findIndex(function (c) { return c.classList.contains('choose'); }) + 1 || 1;
        log('PPT ' + to + ' 页，从 ' + cu + ' 页开始', 'blue');
        function flip(p) {
          if (p >= to) { log('PPT完成', 'green'); return onComplete(); }
          tap(document.querySelector('.preview-section .ppt-preview-container .next-page-btn'));
          return sleep(5).then(function () { return flip(p + 1); });
        }
        return flip(cu);
      });
    }

    function processBook() {
      log('发现电子书，阅读中..', 'blue');
      return awaitEl('.preview-section .book-mark .book-content').then(function () {
        return awaitEl('.preview-section .book-mark .canvas-wrapper');
      }).then(function () {
        var ps = document.querySelectorAll('.preview-section .book-mark .canvas-wrapper');
        if (!ps.length) { log('无电子书页，跳过', 'orange'); return onComplete(); }
        var r = ps[0].getBoundingClientRect();
        var mt = parseInt(getComputedStyle(ps[0]).marginTop, 10) || 0;
        var ph = Math.max(r.height + mt, 100);
        var c = document.querySelector('.preview-section .book-mark .book-container');
        if (!c) { log('无滚动容器，跳过', 'orange'); return onComplete(); }
        function step() {
          var t = Math.min(c.scrollTop + ph, c.scrollHeight - c.clientHeight);
          c.scrollTo({ top: t, behavior: 'smooth' });
          return sleep(1.5).then(function () {
            if (c.scrollTop + c.clientHeight >= c.scrollHeight - 2) { log('电子书完成', 'green'); return onComplete(); }
            return step();
          });
        }
        return step();
      }).catch(function (e) { log('电子书出错: ' + e.message, 'orange'); return onComplete(); });
    }

    function processNext() {
      if (idx >= list.length) { log('小节资源完成', 'green'); return nextSection(); }
      var el = curCard();
      if (!el) { log('无资源，跳过', 'orange'); return onComplete(); }
      var p = Promise.resolve();
      if (idx > 0) {
        tap(el.querySelector('.basic-info-video-card-container') || el);
        p = sleep(3);
      }
      return p.then(function () {
        var t = type(el);
        log('资源 [' + (idx + 1) + '/' + list.length + '] 类型: ' + t, 'blue');
        if (t === RES.VIDEO) return processVideo();
        if (t === RES.BOOK) return processBook();
        if (t === RES.PPT) return processPpt();
        log('不支持: ' + t, 'orange');
        return onComplete();
      });
    }

    function nextSection() {
      if (!CONFIG.autoChangeChapter) { log('自动切换未开启', 'orange'); return Promise.resolve(); }
      var ss = document.querySelectorAll('.section-item-collapse-info');
      var a = document.querySelector('.section-item-collapse-info.active');
      if (!a) { log('无活跃章节', 'orange'); return Promise.resolve(); }
      var t = a.querySelector('.section-item-collapse-title');
      var cur = (t && t.innerText && t.innerText.trim()) || '当前';
      log('「' + cur + '」完成', 'green');
      var arr = Array.from(ss);
      var i = arr.indexOf(a);
      if (i + 1 < arr.length) {
        var n = arr[i + 1];
        var nt = n.querySelector('.section-item-collapse-title');
        log('跳转: ' + ((nt && nt.innerText && nt.innerText.trim()) || '下一节'), 'blue');
        tap(n);
        return sleep(5).then(initRes);
      }
      log('所有章节已完成！', 'green');
      return Promise.resolve();
    }

    function initRes() {
      idx = 0; list = []; v = null;
      return awaitEl('.resources-detail-card .resources-list .resources-item', 15000).then(function () {
        var its = cards();
        if (!its.length) { log('无资源，跳转下一节..', 'orange'); return nextSection(); }
        list = its.map(function (_, i) { return i; });
        log('发现 ' + list.length + ' 个资源', 'blue');
        detect();
        return processNext();
      }).catch(function (e) { log('资源初始化失败: ' + e.message, 'orange'); return nextSection(); });
    }

    function watchUrl() {
      var prev = location.href;
      setInterval(function () {
        if (location.href === prev) return;
        var was = prev.indexOf('/learnPage') !== -1;
        prev = location.href;
        if (location.href.indexOf('/learnPage') !== -1 && !was) {
          log('URL变化，重初始化..', 'blue');
          setTimeout(initRes, 3000);
        }
      }, 1500);
    }

    function start() {
      sleep(6).then(function () {
        var nd = document.querySelector('.read-note-dialog');
        if (nd && getComputedStyle(nd).display !== 'none') {
          var b = nd.querySelector('button');
          if (b) { tap(b); log('已关闭阅读弹窗', 'blue'); }
        }
        awaitEl('.preview-content', 15000).catch(function () { log('加载超时..', 'orange'); });
        watchUrl();
        initRes();
      });
    }
    start();
  }

  /*********************************
   * 15. 新智慧 study/index
   *********************************/
  function wisdomCourseRuntime() {
    log('进入新智慧学习页面，开始工作..', 'green');
    var v = null, vChk = null, quizT = null, pbarT = null, visT = null, finishT = null;
    var lastReplay = 0, visWarn = false, switching = false, busyQuiz = false;
    var stopped = false, loggedRate = false;
    var RK = 'zhs-wisdom-reload';

    function tap(el) {
      if (!el) return Promise.resolve(false);
      el.scrollIntoView && el.scrollIntoView({ behavior: 'smooth', block: 'center' });
      return sleep(0.2).then(function () {
        var r = el.getBoundingClientRect();
        var x = r.left + r.width / 2, y = r.top + r.height / 2;
        var target = document.elementFromPoint(x, y) || el;
        var ev = { bubbles: true, cancelable: true, clientX: x, clientY: y, button: 0, buttons: 1 };
        target.dispatchEvent(new MouseEvent('mousemove', ev));
        target.dispatchEvent(new MouseEvent('mousedown', ev));
        target.dispatchEvent(new MouseEvent('mouseup', { bubbles: true, cancelable: true, clientX: x, clientY: y, button: 0, buttons: 0 }));
        target.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true, clientX: x, clientY: y, button: 0, buttons: 0 }));
        return true;
      });
    }
    function tapNative(el) {
      if (!el) return Promise.resolve(false);
      el.scrollIntoView && el.scrollIntoView({ behavior: 'smooth', block: 'center' });
      return sleep(0.2).then(function () {
        var bc = el.className;
        var bch = el.querySelector('input') && el.querySelector('input').checked;
        el.click();
        return sleep(0.2).then(function () {
          var ach = el.querySelector('input') && el.querySelector('input').checked;
          if (el.className !== bc || ach !== bch) return true;
          return tap(el);
        });
      });
    }
    function rate() { return pickRate(2); }
    function getRC() { return Number(sessionStorage.getItem(RK) || 0); }
    function setRC(n) { sessionStorage.setItem(RK, String(n)); }
    function fixBar() {
      var b = document.querySelector('.controlsBar');
      if (b) { b.style.display = 'block'; b.style.zIndex = '2'; b.style.overflow = ''; }
    }
    function waitCaptcha() {
      if (!document.querySelector('.yidun_popup')) return Promise.resolve(true);
      log('检测到验证码，请完成..', 'orange');
      return awaitEl(function () { return !document.querySelector('.yidun_popup'); }, 5 * 60 * 1000, 1000)
        .then(function () { log('验证码完成', 'green'); return true; })
        .catch(function () { log('验证码超时..', 'orange'); return false; });
    }
    function courseName() {
      var e = document.querySelector('.course-name');
      var t = (e && e.textContent && e.textContent.trim()) || '';
      return t.replace(/^课程名称[:：]\s*/, '') || '未知课程';
    }
    function titleOf(i) { return (i && i.textContent && i.textContent.trim()) || '未知章节'; }
    function items() {
      var its = Array.from(document.querySelectorAll('.chapter-content .chapter-item'));
      its = its.map(function (el) {
        var cs = el.querySelectorAll('.chapter-content-second');
        return cs.length ? Array.from(cs) : [el];
      }).flat();
      return its.filter(function (el) { return !el.querySelector('.finish-icon'); });
    }
    function cur() { return document.querySelector('.chapter-content-second.current, .chapter-item.current'); }
    function next() {
      var its = items();
      if (!its.length) return null;
      var c = cur();
      var i = its.indexOf(c);
      return i >= 0 ? its[i + 1] : its[0];
    }
    function closeMastery() {
      var d = document.querySelector('.masterylevel-body');
      if (!d) return Promise.resolve(false);
      return tap(document.querySelector('.header-box .close-box')).then(function () {
        return awaitEl(function () { return !document.querySelector('.masterylevel-body'); }, 10000, 200)
          .then(function () { return true; }).catch(function () { return true; });
      });
    }
    function hasWarn() {
      return Array.from(document.querySelectorAll('.el-overlay .content')).some(function (el) { return el.textContent && el.textContent.indexOf('保持良好的学习习惯') !== -1; });
    }
    function handleWarn() {
      if (!hasWarn()) return false;
      stopped = true;
      log('检测到学习习惯提示，已暂停，请手动处理后刷新..', 'orange');
      return true;
    }
    function handleQuiz() {
      if (busyQuiz) return Promise.resolve();
      var d = document.querySelector('.ai-class-exercise-dialog');
      if (!d) return Promise.resolve();
      busyQuiz = true;
      log('检测到随堂练习', 'purple');
      var opts = Array.from(d.querySelectorAll('.ques-list .item .option'));
      var p = Promise.resolve();
      if (opts.length) {
        p = waitCaptcha().then(function (ok) {
          if (!ok) return;
          return tapNative(opts[Math.floor(Math.random() * opts.length)]).then(function () { return sleep(1); });
        });
      }
      return p.then(function () {
        var sb = d.querySelector('.el-dialog__footer .el-button.btn');
        if (sb) return tapNative(sb).then(function () { return sleep(1); });
      }).then(function () {
        var cb = d.querySelector('.header-icon');
        if (cb) return tapNative(cb);
      }).then(function () { log('随堂练习完成', 'green'); })
      .then(function () { return sleep(1); busyQuiz = false; });
    }
    function setRate(r) {
      if (!v) return Promise.resolve();
      v.playbackRate = r;
      if (!loggedRate) { loggedRate = true; log('已设置倍速: ' + r + 'x', 'blue'); }
      return Promise.resolve();
    }
    function cleanV() {
      if (vChk) { clearInterval(vChk); vChk = null; }
      if (v) { v.onpause = null; v.onended = null; v = null; }
    }
    function replayCurrent() {
      if (!v || !v.isConnected || !v.ended) return;
      var now = Date.now();
      if (now - lastReplay < 8000) return;
      lastReplay = now;
      v.currentTime = 1;
      setRate(rate()).then(function () { return v.play(); })
        .then(function () { log('未出现完成标记，重播当前视频..', 'orange'); })
        .catch(function () { log('重播失败，等待下次..', 'orange'); });
    }
    function handleFail(e) {
      log((e.message || '视频加载失败') + '，刷新重试..', 'orange');
      var rc = getRC();
      if (rc >= 3) { setRC(0); log('多次失败，请手动刷新..', 'orange'); return; }
      setRC(rc + 1);
      setTimeout(function () { location.reload(); }, 3000);
    }
    function playVideo() {
      if (stopped) return Promise.resolve();
      return waitCaptcha().then(function (ok) {
        if (!ok) return;
        cleanV();
        fixBar();
        return sleep(1).then(function () {
          return awaitEl(function () {
            var m = document.querySelector('video, audio');
            return m && m.src ? m : null;
          }, 15000);
        }).then(function (m) {
          v = m;
          setRC(0);
          lastReplay = 0;
          v.currentTime = Math.max(v.currentTime, 1);
          v.volume = 0;
          v.muted = true;
          return setRate(rate()).then(function () {
            log('学习中: ' + titleOf(cur()), 'green');
            mountBar(titleOf(cur()), v.duration || 0);
            v.ontimeupdate = function () { syncBar(v.currentTime, v.duration || 1); };
            v.play().catch(function () {});
            vChk = setInterval(function () {
              if (!v || !v.isConnected) { cleanV(); setTimeout(playVideo, 1500); }
            }, 3000);
            v.onpause = function () {
              if (!v || v.ended || switching) return;
              setTimeout(function () { v && v.play && v.play().catch(function () {}); }, 1000);
            };
            v.onended = function () { if (!switching) log('视频完成，等待标记..', 'green'); };
          });
        });
      }).catch(function (e) { handleFail(e); });
    }
    function nextChapter() {
      if (switching || stopped) return Promise.resolve();
      if (!CONFIG.autoChangeChapter) { log('自动切换未开启', 'orange'); return Promise.resolve(); }
      switching = true;
      cleanV();
      var hidden = document.querySelector('.chapter-wrapper.hidden');
      var p = hidden ? tap(document.querySelector('.collapse-box') || hidden) : Promise.resolve();
      return p.then(function () {
        document.querySelectorAll('.el-collapse-item__wrap').forEach(function (el) { el.style.display = ''; });
        return sleep(0.2);
      }).then(function () {
        if (handleWarn()) { switching = false; return; }
        return closeMastery();
      }).then(function () {
        var n = next();
        if (!n) { log('所有章节已完成！', 'green'); switching = false; return; }
        return tap(n).then(function () {
          n.scrollIntoView({ behavior: 'smooth', block: 'center' });
          return sleep(5);
        }).then(function () { switching = false; return playVideo(); });
      });
    }
    function startPoll() {
      quizT = setInterval(function () { closeMastery().then(handleQuiz); }, 3000);
      pbarT = setInterval(fixBar, 1000);
      finishT = setInterval(function () {
        if (switching || stopped) return;
        var c = cur();
        if (!c || !c.querySelector('.finish-icon')) { replayCurrent(); return; }
        nextChapter();
      }, 2000);
      visT = setInterval(function () {
        if (document.visibilityState === 'hidden' && !visWarn) { visWarn = true; log('页面不在前台..', 'orange'); }
        else if (document.visibilityState === 'visible') visWarn = false;
      }, 1000);
    }
    function start() {
      log('进入新智慧: ' + courseName(), 'green');
      sleep(5).then(function () {
        awaitEl('.video-play', 20000).catch(function () { log('视频区域加载超时..', 'orange'); });
        document.querySelectorAll('.el-overlay,.el-dialog').forEach(function (d) { d.style.display = 'none'; });
        startPoll();
        playVideo();
      });
    }
    start();
  }

  /*********************************
   * 16. 教学空间
   *********************************/
  function studioCourseRuntime() {
    log('进入教学空间，开始工作..', 'green');
    var v = null, finishT = null, visT = null, switching = false, visWarn = false;

    var PROFILES = [
      { name: '校内课', list: '.file-item', current: '.file-item.active', title: '#sourceTit', done: '.icon-finish', media: '#mediaPlayer, video, audio', needs: function (i) { return !i.querySelector('.icon-finish'); } },
      { name: '教学空间AI智慧课', list: '.source-icon', current: '.active-file', title: '.active-file', done: 'i.select', media: 'video, audio', map: function (ic) { return ic.parentElement && ic.parentElement.parentElement; }, needs: function (i) { return !i.querySelector('i.select'); } },
      { name: '教学空间AI智慧课', list: '.el-tree-node', current: '.el-tree-node.is-current', title: '.file-name', done: 'label.success', media: 'video, audio', filter: function (i) { var c = i.querySelector('.el-tree-node__children'); return !c || !c.children.length; }, needs: function (i) { return !i.querySelector('label.success'); } }
    ];

    function tap(el) {
      if (!el) return Promise.resolve(false);
      el.scrollIntoView && el.scrollIntoView({ behavior: 'smooth', block: 'center' });
      return sleep(0.2).then(function () {
        el.click && el.click();
        el.dispatchEvent && el.dispatchEvent(new MouseEvent('click', { bubbles: true }));
        return true;
      });
    }
    function profile() { return PROFILES.find(function (p) { return document.querySelector(p.list); }); }
    function items(p) { return Array.from(document.querySelectorAll(p.list)).map(function (i) { return p.map ? p.map(i) : i; }).filter(Boolean).filter(function (i) { return !p.filter || p.filter(i); }); }
    function cur(p) { return (document.querySelector(p.current) && document.querySelector(p.current).closest(p.list)) || items(p).find(function (i) { return i.matches && i.matches(p.current); }) || null; }
    function titleOf(i, p) {
      var el = i && i.querySelector(p.title);
      return (el && el.textContent && el.textContent.trim()) || (document.querySelector(p.title) && document.querySelector(p.title).textContent.trim()) || (i && i.textContent && i.textContent.trim()) || '未知章节';
    }
    function docs() {
      var ds = [document];
      document.querySelectorAll('iframe').forEach(function (f) { try { if (f.contentDocument) ds.push(f.contentDocument); } catch (e) {} });
      return ds;
    }
    function isMedia(el) { return el && (el.tagName === 'VIDEO' || el.tagName === 'AUDIO'); }
    function hasSrc(m) {
      return !!(m && (m.currentSrc || m.src || (m.querySelector && m.querySelector('source')) || m.readyState > 0));
    }
    function findMedia(sel) {
      var ds = docs();
      for (var i = 0; i < ds.length; i++) {
        var doc = ds[i];
        var cs = Array.from(doc.querySelectorAll(sel));
        for (var j = 0; j < cs.length; j++) {
          var c = cs[j];
          var m = isMedia(c) ? c : (c.querySelector && c.querySelector('video, audio'));
          if (m && (hasSrc(m) || isMedia(m))) return m;
        }
        var fb = doc.querySelector('video, audio');
        if (fb && (hasSrc(fb) || isMedia(fb))) return fb;
      }
      return null;
    }
    function next(p) {
      var its = items(p).filter(function (i) { return p.needs(i); });
      if (!its.length) return null;
      var c = cur(p);
      var i = its.indexOf(c);
      return i >= 0 ? its[i + 1] : its[0];
    }
    function cleanV() { if (v) { v.onpause = null; v.onended = null; v = null; } }
    function play(p) {
      cleanV();
      return awaitEl(function () { return findMedia(p.media); }, 15000).then(function (m) {
        v = m;
        v.volume = 0;
        v.muted = true;
        var r = forceRateOn() ? pickRate(16) : pickRate(2);
        pinRate(v, r);
        log('学习中: ' + titleOf(cur(p), p), 'green');
        log('已设置倍速: ' + r + 'x', 'blue');
        v.play().catch(function () {});
        mountBar(titleOf(cur(p), p), v.duration || 0);
        v.ontimeupdate = function () { syncBar(v.currentTime, v.duration || 1); };
        v.onpause = function () {
          if (!v || v.ended || switching) return;
          setTimeout(function () { v && v.play && v.play().catch(function () {}); }, 1000);
        };
        v.onended = function () { unmountBar(); sleep(3).then(function () { nextItem(p); }); };
      }).catch(function (e) {
        log((e.message || '无音视频') + '，跳转下一节..', 'orange');
        return sleep(3).then(function () { nextItem(p); });
      });
    }
    function nextItem(p) {
      if (switching) return Promise.resolve();
      if (!CONFIG.autoChangeChapter) { log('自动切换未开启', 'orange'); return Promise.resolve(); }
      switching = true;
      cleanV();
      var n = next(p);
      if (!n) { log('所有章节已完成！', 'green'); switching = false; return Promise.resolve(); }
      log('跳转: ' + titleOf(n, p), 'blue');
      return tap(n).then(function () { return sleep(5); }).then(function () {
        switching = false;
        return play(p);
      });
    }
    function startPoll(p) {
      finishT = setInterval(function () {
        if (switching) return;
        var c = cur(p);
        if (c && !p.needs(c)) nextItem(p);
      }, 2000);
      visT = setInterval(function () {
        if (document.visibilityState === 'hidden' && !visWarn) { visWarn = true; log('页面不在前台..', 'orange'); }
        else if (document.visibilityState === 'visible') visWarn = false;
      }, 1000);
    }
    function start() {
      if (location.href.indexOf('ai-course-center') !== -1 || (location.href.indexOf('tools-hike') !== -1 && location.href.indexOf('resource') === -1)) {
        log('请手动进入学习资源页..', 'orange');
        return;
      }
      sleep(5).then(function () {
        var p = profile();
        if (!p) { log('未识别章节列表，请确认页面已加载..', 'orange'); return; }
        log('进入教学空间: ' + p.name, 'green');
        startPoll(p);
        play(p);
      });
    }
    start();
  }

  /*********************************
   * 17. 答题（智慧树考试/作业）
   *********************************/
  function answerRuntime() {
    log('进入智慧树答题页面，开始工作..', 'green');
    var SHAPES = [
      {
        tag: 'exam-new',
        root: '.question-area-content',
        type: "[class*='question-type']",
        stem: '.text-mainText.font-medium',
        opts: "label.user-select.group, [role='radio'], [role='checkbox']",
        before: function () {
          var fb = document.querySelector('.grid.grid-cols-7 > button');
          if (fb) fb.click();
          var s = Date.now();
          function c() {
            return new Promise(function (res) {
              if (Date.now() - s > 10000) { res(); return; }
              var r = document.querySelector('.question-area-content');
              if (r && r.textContent && r.textContent.trim()) { res(); return; }
              sleep(0.3).then(c).then(res);
            });
          }
          return c();
        },
        next: function () { return Array.from(document.querySelectorAll('button')).find(function (b) { return b.textContent && b.textContent.indexOf('下一题') !== -1; }); }
      },
      {
        tag: 'hw-new',
        root: '.questionBox',
        type: '.questionTit',
        stem: '.questionContent',
        opts: '.optionUl label',
        next: 'span.Topicswitchingbtn:nth-child(2)'
      },
      {
        tag: 'mastery',
        root: '.questionContent',
        type: '.questionName',
        stem: '.questionName .centent-pre',
        opts: '.radio-view li.clearfix, .checkbox-views label.el-checkbox, .fillAnswer'
      },
      {
        tag: 'ai-mastery',
        root: '.exam-item',
        type: '.quest-type',
        stem: '.quest-title .option-name',
        opts: 'label'
      }
    ];

    function cleanText(t) { return String(t || '').replace(/<[^>]+>/g, '').replace(/&nbsp;/g, ' ').replace(/\s+/g, ' ').trim(); }
    function htmlOf(el) { return (el && el.innerHTML) || (el && el.textContent) || ''; }
    function toSel(s) { return Array.isArray(s) ? s : [s].filter(Boolean); }
    function queryAll(root, sels) {
      var r = [];
      toSel(sels).forEach(function (s) { try { r.push.apply(r, root.querySelectorAll(s)); } catch (e) {} });
      return Array.from(new Set(r));
    }
    function queryOne(root, sels) { return queryAll(root, sels)[0] || null; }

    function pickShape() {
      var s = Date.now();
      function c() {
        return new Promise(function (res) {
          if (Date.now() - s > 20000) { res(null); return; }
          var p = SHAPES.find(function (x) { return document.querySelector(x.root); });
          if (p) { res(p); return; }
          sleep(0.3).then(c).then(res);
        });
      }
      return c();
    }

    function readShape(shape) {
      var roots = Array.from(document.querySelectorAll(shape.root));
      return roots.map(function (root) {
        var optEls = queryAll(root, shape.opts).filter(function (o) { return cleanText(o.textContent); });
        var optsText = optEls.map(function (o) { return cleanText(o.textContent); });
        var optMap = {};
        optEls.forEach(function (o, i) { optMap[optsText[i]] = htmlOf(o); });
        var titleEl = queryOne(root, shape.stem);
        var title = cleanText(htmlOf(titleEl));
        if (!title) {
          var set = new Set(optsText.map(function (o) { return normalizeForCompare(o); }));
          title = queryAll(root, 'div,p,span').map(function (el) { return cleanText(el.textContent); })
            .filter(function (t) { return t.length > 4 && !set.has(normalizeForCompare(t)); })
            .sort(function (a, b) { return b.length - a.length; })[0] || '';
        }
        return { root: root, title: title, optionsText: optsText, options: optMap, optionEls: optEls };
      }).filter(function (q) { return q.title; });
    }

    function isChoice(t) { return ['单选题', '多选题', '判断题'].indexOf(t) !== -1; }

    function settleChoice(q, arr) {
      var els = (q.optionEls && q.optionEls.length) ? q.optionEls : queryAll(q.root, "label, [role='radio'], [role='checkbox'], .radio-view li.clearfix, .checkbox-views label.el-checkbox");
      var na = arr.map(function (a) { return normalizeForCompare(a); });
      var first = na[0];
      var yes = /^(正确|是|对|√|t|true|right)$/i.test(first);
      var no = /^(错误|否|错|×|f|false|wrong)$/i.test(first);
      var hit = false;
      els.forEach(function (el) {
        var t = normalizeForCompare(el.textContent);
        var j = q.typeStr === 'judge' && ((yes && /^(正确|是|对|√|t|true|right)$/i.test(t)) || (no && /^(错误|否|错|×|f|false|wrong)$/i.test(t)));
        if (na.indexOf(t) !== -1 || j) { hit = true; el.click(); el.dispatchEvent(new MouseEvent('click', { bubbles: true })); }
      });
      return hit;
    }
    function settleBlank(q, arr) {
      var ins = Array.from(q.root.querySelectorAll('input, textarea, .fillAnswer input, .fillAnswer textarea'));
      if (!ins.length) return false;
      ins.forEach(function (el, i) {
        el.value = arr[i] || arr[0] || '';
        el.dispatchEvent(new Event('input', { bubbles: true }));
        el.dispatchEvent(new Event('change', { bubbles: true }));
      });
      return true;
    }
    function settle(q) {
      var arr = (q.answer && q.answer.answer) || [];
      if (!arr.length) return false;
      if (isChoice(q.typeStr)) return settleChoice(q, arr);
      return settleBlank(q, arr);
    }

    function job() {
      return pickShape().then(function (shape) {
        if (!shape) { log('未识别答题区', 'orange'); return; }
        log('进入: ' + shape.tag, 'green');
        return Promise.resolve(shape.before && shape.before()).then(function () {
          var all = [];
          var ok = 0;
          var prev = '';
          function loop() {
            var qs = readShape(shape).map(function (q) {
              q.typeStr = classifyQ($(q.root), {});
              return q;
            });
            if (!qs.length) return Promise.resolve();
            all.push.apply(all, qs);
            var chain = Promise.resolve();
            qs.forEach(function (q) {
              chain = chain.then(function () {
                return qFetch(q.typeStr, q.title, q.optionsText).then(function (a) {
                  if (a && a !== '暂无答案') {
                    q.answer = { code: 1, answer: splitAnswer(a) };
                    if (settle(q)) ok++;
                  }
                }).catch(function () {}).then(function () {
                  return sleep(randGap() / 1000);
                });
              });
            });
            return chain.then(function () {
              var nxt = typeof shape.next === 'function' ? shape.next() : document.querySelector(shape.next);
              if (!nxt || nxt.classList.contains('disabled')) {
                if (!all.length) return;
                log('答题完成，正确率 ' + (ok / all.length * 100).toFixed(1) + '%', 'green');
                return;
              }
              var c = (all[all.length - 1] && all[all.length - 1].title) || '';
              if (c && c === prev) {
                if (!all.length) return;
                log('答题完成，正确率 ' + (ok / all.length * 100).toFixed(1) + '%', 'green');
                return;
              }
              prev = c;
              nxt.click();
              return sleep(1).then(loop);
            });
          }
          return loop();
        });
      });
    }
    job();
  }

  /*********************************
   * 18. URL 路由表
   *********************************/
  var URL_TABLE = [
    [/ai-smart-course-student-pro\.zhihuishu\.com\/(learnPage|singleCourse)/, aiCourseRuntime],
    [/smartcoursestudent\.zhihuishu\.com\/(learnPage|singleCourse)/, aiCourseRuntime],
    [/studyplush5\.zhihuishu\.com/, plusCourseRuntime],
    [/studywisdomh5\.zhihuishu\.com\/study\/index/, plusCourseRuntime],
    [/studyvideoh5\.zhihuishu\.com/, courseRuntime],
    [/smartcourseexam\.zhihuishu\.com\/ReviewExam/, answerRuntime],
    [/studentexamcomh5\.zhihuishu\.com\/studentReviewTestOrExam/, answerRuntime],
    [/fusioncourseh5\.zhihuishu\.com\/exam/, answerRuntime],
    [/studywisdomh5\.zhihuishu\.com\/exam/, answerRuntime],
    [/wisdom-mooc\.zhihuishu\.com\/exam/, answerRuntime],
    [/examloop\.zhihuishu\.com\/exam/, answerRuntime],
    [/zhihuishu\.com\/atHomeworkExam\/stu\/(homeworkQ|examQ)\//, answerRuntime],
    [/zhihuishu\.com\/aidedteaching\/sourceLearning/, studioCourseRuntime],
    [/hike-teaching-center\.polymas\.com\/stu-hike\/agent-course-hike\/ai-course-center/, studioCourseRuntime],
    [/tools-hike\/studentStudyResource/, studioCourseRuntime],
    [/fusioncourseh5\.zhihuishu\.com/, fusionCourseRuntime],
    [/zhihuishu\.com\/learnPage/, lpCourseRuntime],
    [/wisdom-mooc\.zhihuishu\.com\/study\/index/, wisdomCourseRuntime]
  ];

  function dispatchByUrl() {
    var u = location.href;
    for (var i = 0; i < URL_TABLE.length; i++) if (URL_TABLE[i][0].test(u)) return URL_TABLE[i][1];
    return null;
  }

  /*********************************
   * 19. BZM UI（原样保留）
   *********************************/
  function getPanelHTML() {
    var actualInterval = getRandomInterval();
    return '<div id="ne-21box" style="position:fixed;top:10%;right:5%;z-index:99999;width:460px;background:#fff;border-radius:16px;box-shadow:0 8px 28px rgba(0,0,0,0.12),0 0 0 1px rgba(0,0,0,0.02);font-family:-apple-system,BlinkMacSystemFont,\'Segoe UI\',Roboto,Helvetica,Arial,sans-serif;font-size:14px;overflow:hidden;">' +
      '<div id="ne-21drag-handle" style="display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:#fafbfc;border-bottom:1px solid #eef2f6;cursor:move;user-select:none;">' +
      '<h3 style="margin:0;font-size:18px;font-weight:500;color:#1e2a3a;pointer-events:none;">📚 智慧树助手 v1.0.0 <span style="font-size:12px;color:#9bb0c3;">（按住拖动）</span></h3>' +
      '<span id="ne-21close" style="cursor:pointer;color:#8b9eb0;font-size:20px;line-height:1;">✕</span></div>' +
      '<div id="ne-21notice" style="padding:12px 20px;background:#f8f9fc;border-bottom:1px solid #eef2f6;font-size:13px;color:#4a627a;"></div>' +
      '<div style="padding:20px;">' +
      '<div style="margin-bottom:20px;">' +
      '<div style="display:flex;align-items:center;gap:8px;margin-bottom:10px;">' +
      '<input type="password" id="apiKeyInput" placeholder="API密钥" style="flex:1;padding:8px 12px;border:1px solid #dce5ec;border-radius:10px;font-size:13px;">' +
      '<button id="saveApiKeyBtn" style="padding:6px 14px;background:#2c7da0;color:#fff;border:none;border-radius:20px;cursor:pointer;font-size:13px;">保存</button>' +
      '<button id="goToTkBtn" style="padding:6px 14px;background:#61a5c2;color:#fff;border:none;border-radius:20px;cursor:pointer;font-size:13px;">获取密钥</button></div>' +
      '<div id="quotaInfo" style="font-size:12px;color:#5f7f9e;margin-bottom:5px;">📊 剩余次数: 加载中...</div>' +
      '<div id="testResult" style="font-size:12px;color:#8b9eb0;"></div></div>' +
      '<div style="margin-bottom:20px;background:#f8fafd;padding:12px 16px;border-radius:14px;">' +
      '<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;">' +
      '<span style="font-weight:500;">🎬 视频倍速</span>' +
      '<span id="rateValue" style="background:#eef2f6;padding:2px 8px;border-radius:20px;font-size:13px;">' + Number(CONFIG.videoRate).toFixed(2) + 'x</span></div>' +
      '<input type="range" id="videoRateSlider" min="1" max="8" step="0.25" value="' + CONFIG.videoRate + '" style="width:100%;margin:8px 0;">' +
      '<div style="display:flex;justify-content:space-between;margin-top:8px;">' +
      '<label style="display:flex;align-items:center;gap:6px;"><input type="checkbox" id="forceRateCheck" ' + (CONFIG.forceRate ? 'checked' : '') + '> <span style="font-size:13px;">强制倍速</span></label>' +
      '<label style="display:flex;align-items:center;gap:6px;"><input type="checkbox" id="showProgressBarCheck" ' + (CONFIG.showProgressBar ? 'checked' : '') + '> <span style="font-size:13px;">显示进度条</span></label></div></div>' +
      '<button id="moreSettingsBtn" style="width:100%;padding:8px 0;background:#f0f4f9;border:none;border-radius:40px;color:#2c7da0;font-weight:500;cursor:pointer;margin-bottom:12px;">⚙️ 更多设置</button>' +
      '<div id="moreSettings" style="display:none;margin-top:4px;background:#ffffff;border-radius:16px;border:1px solid #eef2f6;padding:16px;">' +
      '<div style="margin-bottom:16px;"><div style="font-weight:500;margin-bottom:8px;">✍️ 答题设置</div>' +
      '<div style="display:flex;flex-wrap:wrap;gap:12px;">' +
      '<label><input type="checkbox" id="setting_autoAnswer" ' + (CONFIG.autoAnswer ? 'checked' : '') + '> 自动答题</label>' +
      '<label><input type="checkbox" id="setting_autoSubmit" ' + (CONFIG.autoSubmit ? 'checked' : '') + '> 自动提交</label>' +
      '<label><input type="checkbox" id="setting_autoChangeChapter" ' + (CONFIG.autoChangeChapter ? 'checked' : '') + '> 自动切换章节</label>' +
      '<label><input type="checkbox" id="setting_insertAnswer" ' + (CONFIG.insertAnswer ? 'checked' : '') + '> 答案插入题目</label>' +
      '<label><input type="checkbox" id="setting_handleVideoQuiz" ' + (CONFIG.handleVideoQuiz ? 'checked' : '') + '> 弹窗答题</label></div></div>' +
      '<div style="display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;">' +
      '<div><span style="color:#4a627a;">答题间隔(ms)</span><br><input type="number" id="answerInterval" value="' + CONFIG.answerInterval + '" style="width:90px;padding:6px;border:1px solid #dce5ec;border-radius:8px;"></div>' +
      '<div><label><input type="checkbox" id="setting_reviewMode" ' + (CONFIG.reviewMode ? 'checked' : '') + '> 复习模式</label></div></div></div>' +
      '<div id="ne-21log" style="margin-top:16px;max-height:240px;overflow-y:auto;font-size:12px;background:#fafbfc;border-radius:12px;padding:10px;border:1px solid #eef2f6;"></div>' +
      '</div></div>';
  }

  function bindSettingUI(targetDoc) {
    var $box = $('#ne-21box', targetDoc);
    var boxEl = $box[0];
    if (boxEl) {
      var savedLeft = GM_getValue('panel_left', null);
      var savedTop = GM_getValue('panel_top', null);
      if (savedLeft !== null && savedTop !== null) {
        var vw = $(targetDoc).width();
        var vh = $(targetDoc).height();
        savedLeft = Math.max(0, Math.min(vw - boxEl.offsetWidth, savedLeft));
        savedTop = Math.max(0, Math.min(vh - boxEl.offsetHeight, savedTop));
        $box.css({ left: savedLeft + 'px', top: savedTop + 'px', right: 'auto' });
      }
      var $handle = $('#ne-21drag-handle', targetDoc);
      var dragging = false, startX = 0, startY = 0, origLeft = 0, origTop = 0;
      $handle.off('mousedown.panelDrag').on('mousedown.panelDrag', function (e) {
        if ($(e.target).is('span, button, input, a')) return;
        dragging = true;
        var rect = boxEl.getBoundingClientRect();
        origLeft = rect.left;
        origTop = rect.top;
        startX = e.clientX;
        startY = e.clientY;
        $box.css({ left: origLeft + 'px', top: origTop + 'px', right: 'auto' });
        e.preventDefault();
      });
      $(targetDoc).off('mousemove.panelDrag mouseup.panelDrag')
        .on('mousemove.panelDrag', function (e) {
          if (!dragging) return;
          var dx = e.clientX - startX;
          var dy = e.clientY - startY;
          var newLeft = Math.max(0, Math.min($(targetDoc).width() - boxEl.offsetWidth, origLeft + dx));
          var newTop = Math.max(0, Math.min($(targetDoc).height() - boxEl.offsetHeight, origTop + dy));
          $box.css({ left: newLeft + 'px', top: newTop + 'px' });
        })
        .on('mouseup.panelDrag', function () {
          if (!dragging) return;
          dragging = false;
          var rect = boxEl.getBoundingClientRect();
          GM_setValue('panel_left', Math.round(rect.left));
          GM_setValue('panel_top', Math.round(rect.top));
        });
    }
    $('#ne-21close', targetDoc).off('click').on('click', function () { $('#ne-21box', targetDoc).hide(); });

    var $moreBtn = $('#moreSettingsBtn', targetDoc);
    var $moreSet = $('#moreSettings', targetDoc);
    var visible = false;
    $moreBtn.off('click').on('click', function () {
      visible = !visible;
      $moreSet.css('display', visible ? 'block' : 'none');
      $moreBtn.text(visible ? '✖️ 收起设置' : '⚙️ 更多设置');
    });

    var $rateSlider = $('#videoRateSlider', targetDoc);
    var $rateValue = $('#rateValue', targetDoc);
    $rateSlider.off('input change').on('input', function () { $rateValue.text(parseFloat(this.value).toFixed(2)); })
      .on('change', function () {
        var newRate = parseFloat(this.value);
        if (newRate > 8) newRate = 8;
        updateConfig('videoRate', newRate);
        SettingsManager.saveVideoRate(CONFIG.videoRate);
        log('📹 视频倍速: ' + CONFIG.videoRate.toFixed(2) + 'x', 'green');
      });
    $('#forceRateCheck', targetDoc).off('change').on('change', function () { updateConfig('forceRate', this.checked ? 1 : 0); });
    $('#showProgressBarCheck', targetDoc).off('change').on('change', function () {
      var show = this.checked ? 1 : 0;
      updateConfig('showProgressBar', show);
      SettingsManager.saveProgressBar(show);
      if (show === 0) unmountBar();
    });
    $('#answerInterval', targetDoc).off('change').on('change', function (e) {
      var newTime = parseInt(e.target.value);
      if (newTime >= 500 && newTime <= 10000) updateConfig('answerInterval', newTime);
      else e.target.value = CONFIG.answerInterval;
    });
    ['autoAnswer', 'autoSubmit', 'autoChangeChapter', 'insertAnswer', 'reviewMode', 'handleVideoQuiz'].forEach(function (id) {
      var $cb = $('#setting_' + id, targetDoc);
      if ($cb.length) $cb.off('change').on('change', function () { updateConfig(id, this.checked ? 1 : 0); });
    });
    $('#goToTkBtn', targetDoc).off('click').on('click', function () { GM_openInTab('https://tk.n1t.cn', { active: true }); });
    $('#saveApiKeyBtn', targetDoc).off('click').on('click', function () {
      var key = $('#apiKeyInput', targetDoc).val();
      var $tr = $('#testResult', targetDoc);
      if (key && key.trim()) {
        $tr.html('⏳ 测试中...').css('color', '#7d9bb5');
        testApi(key.trim(), 0).then(function (res) {
          GM_setValue('api_key', key.trim());
          log('✅ 密钥保存并验证有效', 'green');
          if (res.quota_info) {
            updateQuotaInfo(res.quota_info);
            $tr.html('✅ 有效！剩余: ' + (res.quota_info.remaining || 0) + ' | 免费: ' + (res.quota_info.free_remaining || 0)).css('color', '#2c7da0');
          } else $tr.html('✅ 有效').css('color', '#2c7da0');
          $('#apiKeyInput', targetDoc).val('').attr('placeholder', '已设置');
          updateQuotaDisplay();
          setTimeout(function () { $tr.html(''); }, 5000);
        }).catch(function (err) {
          $tr.html('❌ 无效: ' + err).css('color', '#e07c5c');
          log('❌ 密钥无效: ' + err, 'red');
          setTimeout(function () { $tr.html(''); }, 5000);
        });
      } else {
        var ek = getApiKey();
        if (ek) {
          testApi(ek, 0).then(function (res) {
            if (res.quota_info) updateQuotaInfo(res.quota_info);
            $tr.html('✅ 有效').css('color', '#2c7da0');
            updateQuotaDisplay();
            setTimeout(function () { $tr.html(''); }, 5000);
          }).catch(function () {
            GM_setValue('api_key', '');
            quotaInfo = { remaining: 0, freeRemaining: 0, rechargeBalance: 0, todayFreeUsage: 0 };
            saveQuotaInfo();
            updateQuotaDisplay();
            $tr.html('❌ 已失效').css('color', '#e07c5c');
            setTimeout(function () { $tr.html(''); }, 5000);
          });
        } else {
          $tr.html('❌ 请输入密钥').css('color', '#e07c5c');
          setTimeout(function () { $tr.html(''); }, 3000);
        }
      }
    });
  }

  function showPikaqiu() {
    if (!CONFIG.showMaskImg) return;
    try {
      var targetDoc = top.document;
      if (targetDoc.querySelector('#pikaqiu-img')) return;
      var imgHtml = '<img id="pikaqiu-img" src="https://pkpkq.n1t.cn/pkq.gif" style="position:fixed;bottom:20px;left:20px;z-index:99999;width:100px;cursor:pointer;opacity:0.7;" title="智慧树助手">';
      $(targetDoc.body).append(imgHtml);
      $('#pikaqiu-img', targetDoc).click(function () {
        var $box = $('#ne-21box', targetDoc);
        if ($box.length) {
          if ($box.css('display') === 'none') $box.css('display', 'block');
          else $box.css('display', 'none');
        }
      });
    } catch (e) {}
  }

  function showBox() {
    if (!CONFIG.showBox) return;
    try {
      var targetDoc = top.document;
      if (targetDoc.querySelector('#ne-21box')) { flushLogs(); updateQuotaDisplay(); return; }
    } catch (e) {}
    setTimeout(function () {
      try {
        var targetDoc = top.document;
        $(targetDoc.body).append(getPanelHTML());
        bindSettingUI(targetDoc);
        $('#ne-21notice', targetDoc).html('<div style="font-size:12px;">✅ 脚本已加载 v1.0.0 | 智慧树全平台 | 倍速: ' + Number(CONFIG.videoRate).toFixed(2) + 'x</div>');
        var savedKey = getApiKey();
        if (savedKey) {
          $('#apiKeyInput', targetDoc).attr('placeholder', '已设置');
          testApi(savedKey, 0).then(function (res) { if (res.quota_info) updateQuotaInfo(res.quota_info); log('✅ 密钥有效', 'green'); })
            .catch(function () {
              GM_setValue('api_key', '');
              quotaInfo = { remaining: 0, freeRemaining: 0, rechargeBalance: 0, todayFreeUsage: 0 };
              saveQuotaInfo();
              updateQuotaDisplay();
              log('⚠️ 密钥已失效', 'orange');
            });
        } else updateQuotaDisplay();
        flushLogs();
        showPikaqiu();
      } catch (e) { console.error('显示悬浮窗失败:', e); }
    }, 100);
  }

  /*********************************
   * 20. 启动
   *********************************/
  $(function () {
    if (CONFIG.videoRate > 8) CONFIG.videoRate = 8;
    var ss = GM_getValue('current_server_index', 0);
    if (ss >= 0 && ss < API_SERVERS.length) currentServerIndex = ss;

    // 反检测：hook setInterval/setTimeout
    try {
      var oldSet = unsafeWindow.setInterval;
      var oldOut = unsafeWindow.setTimeout;
      unsafeWindow.setInterval = function () {
        var e = new Error('');
        if (e.stack && e.stack.indexOf('checkoutNotTrustScript') !== -1) return -1;
        return oldSet.apply(this, arguments);
      };
      unsafeWindow.setTimeout = function () {
        var e = new Error('');
        if (e.stack && e.stack.indexOf('checkoutNotTrustScript') !== -1) return -1;
        return oldOut.apply(this, arguments);
      };
    } catch (e) {}

    showBox();
    var fn = dispatchByUrl();
    if (fn) {
      log('✅ 匹配路由', 'green');
      try { fn(); } catch (e) { log('❌ 逻辑执行失败: ' + e.message, 'red'); console.error(e); }
    } else {
      log('⚠️ 当前页面暂不支持: ' + location.href, 'orange');
    }
  });

  $(document).keydown(function (e) {
    if (e.keyCode == 120) {
      var $b = $('#ne-21box');
      if (!$b.length) return;
      if ($b.css('display') === 'none') { $b.show(); log('📌 面板已显示', 'green'); }
      else { $b.hide(); log('📌 面板已隐藏，按F9恢复', 'blue'); }
    }
  });

  window.addEventListener('beforeunload', function () {
    unmountBar();
  });

})();