// ==UserScript==
// @name         安徽专业技术人员继续教育在线学习助手
// @namespace    https://oa.wlxy.top/
// @version      2.0
// @author       柠檬真酸
// @icon         https://huaweicloudobs.ahjxjy.cn/895789f9086469785b846d30c0ed95f9.png
// @description  支持安徽专业技术人员继续教育在线，自动完成未完成课程和考试，一键完成当前培训计划内学时，支持快刷和1:1时长慢刷模式自由切换，安全稳定
// @antifeature  payment  免费体验章节有限，升级Pro不限
// @antifeature  membership  需云端授权
// @connect      oa2.ahzsksw.cn
// @connect      juheapi.zjzx.ah.cn
// @connect      huaweicloudobs.ahjxjy.cn
// @connect      fa.ahsxks.com
// @match        https://www.zjzx.ah.cn/*
// @grant        GM_xmlhttpRequest
// @grant        GM_info
// @grant        GM_openInTab
// @run-at       document-start
// @license      All Rights Reserved
// ==/UserScript==

(function () {
  "use strict";

  const STORAGE_KEY = "zjzx_auto_study_enabled";
  const MULTIPLIER_KEY = "zjzx_study_time_multiplier";
  const ADVANCE_KEY = "zjzx_advance_multiplier";
  const SAVE_INTERVAL_KEY = "zjzx_save_interval_sec";
  const HEARTBEAT_BASE = 300;
  const MODE_KEY = "zjzx_run_mode";
  const STUDY_MODE_KEY = "zjzx_study_mode";
  const BG_STATE_KEY = "zjzx_bg_learn_state";
  const QUEUE_KEY = "zjzx_course_queue";
  const QUEUE_TOUCHED_KEY = "zjzx_queue_touched";
  const PLAN_TP_KEY = "zjzx_selected_tp_id";
  const AUTO_EXAM_KEY = "zjzx_auto_exam";
  const SCRIPT_VERSION = (() => {
    try {
      if (typeof GM_info !== "undefined" && GM_info?.script?.version) {
        return String(GM_info.script.version);
      }
    } catch (_) {}
    return "unknown";
  })();
  const PRO_BUY_URL = "https://fa.ahsxks.com/ahzj/";
  const PRO_BUY_OPEN_MS = new Date("2026-06-06T00:00:00+08:00").getTime();
  const CLOUD_API_BASE_KEY = "zjzx_cloud_api_base";
  const CLOUD_TOKEN_KEY = "zjzx_cloud_token_v1";
  const CLOUD_LEASE_CACHE_KEY = "zjzx_cloud_lease_cache_v1";
  const CLOUD_PRO_EXPIRE_CACHE_KEY = "zjzx_cloud_pro_expire_cache_v1";
  const CLOUD_LAST_STATE_KEY = "zjzx_cloud_last_state_v1";
  const PANEL_POS_KEY = "zjzx_panel_pos_v1";
  const PANEL_COLLAPSED_KEY = "zjzx_auto_panel_collapsed_v1";
  const PANEL_LOGO_URL = "https://huaweicloudobs.ahjxjy.cn/895789f9086469785b846d30c0ed95f9.png";
  const QQ_GROUP_NUMBER = "903117129";
  const QQ_GROUP_LINK =
    "https://qun.qq.com/universal-share/share?ac=1&authKey=rxdL6YIJ0%2FxOEemjLqTGULvl5aAfJIVQcIvkvnwvmL%2FAmpFZnSafajYHgSXMUXvx&busi_data=eyJncm91cENvZGUiOiI5MDMxMTcxMjkiLCJ0b2tlbiI6IlB2dkFGSm5XRXBrSEhtQVFTUGQzdVNZakhNWDNMbW1kODA2enpoMi9obDh4SWp0YzBDODNFaGtwRU44Z0hyU0siLCJ1aW4iOiIxMjU0MzE1MTQifQ%3D%3D&data=9oyJixSPcigCQW-saV5eXlcMwV9C6J36XySx-rDHwVwNlofvRmd2ze5sLwFtHTbYbG4nAWIUrI0qftC6aTX9xg&svctype=4&tempid=h5_group_info";
  const DEFAULT_CLOUD_API_BASE = "https://oa2.ahzsksw.cn";
  const PANEL_NOTICE_FALLBACK = "\u5b89\u5fbd\u4e13\u6280\u5728\u7ebf\u52a9\u624b";
  const NAV_GUARD_KEY = "zjzx_auto_nav_guard";
  const TICK_MS = 3000;
  const NAV_COOLDOWN_MS = 60000;
  const CHAPTER_CLICK_COOLDOWN_MS = 20000;
  const VIDEO_WAIT_MS = 45000;
  const SITE_ID = "c95b90cef9a640b1aed870c0b8c3a935";
  const API_BASE = "https://juheapi.zjzx.ah.cn";
  const MAX_ADVANCE_SEC = 3600;

  function injectPageKeepAlive() {
    const code = function () {
      if (window.__zjzxKeepAlivePatched) return;
      window.__zjzxKeepAlivePatched = true;
      window.requestKeepAlive = function () {
        const xhr = new XMLHttpRequest();
        xhr.open("GET", "/keepAlive.html", true);
        xhr.withCredentials = true;
        xhr.onreadystatechange = function () {
          if (xhr.readyState === 4) setTimeout(window.requestKeepAlive, 30000);
        };
        xhr.send();
      };
    };
    const el = document.createElement("script");
    el.textContent = "(" + code.toString() + ")();";
    (document.documentElement || document.head).appendChild(el);
    el.remove();
  }

  injectPageKeepAlive();

  let keepAliveTimer = null;
  function syncKeepAlive() {
    if (keepAliveTimer) {
      clearInterval(keepAliveTimer);
      keepAliveTimer = null;
    }
    if (!state.enabled || getMode() !== "background") return;
    keepAliveTimer = setInterval(() => {
      try {
        const xhr = new XMLHttpRequest();
        xhr.open("GET", location.origin + "/keepAlive.html", true);
        xhr.withCredentials = true;
        xhr.send();
      } catch (_) {}
    }, 30000);
  }

  const state = {
    enabled: false,
    studyMode: "",
    lastAction: "",
    lastTick: 0,
    bgTickBusy: false,
    faceWaiting: false,
    courseplayWaitSince: 0,
    trainApiTriedAt: 0,
    panelCourses: [],
    teachPlans: [],
    selectedTpId: "",
    chapterPreview: [],
    queueVideoTotal: 0,
    queueVideoDone: 0,
    queueExamTotal: 0,
    queueExamDone: 0,
    coursesDoneSession: 0,
    panelRefreshing: false,
    previewRefreshTimer: null,
    cloudApiBase: DEFAULT_CLOUD_API_BASE,
    cloudToken: String(localStorage.getItem(CLOUD_TOKEN_KEY) || "").trim(),
    cloudTier: String(localStorage.getItem(CLOUD_TOKEN_KEY) || "").trim() ? "unknown" : "free",
    cloudLease: "",
    cloudLeaseExp: 0,
    cloudProExpireAt: 0,
    cloudRevoked: false,
    freeVideoLimit: 1,
    freeUsedVideos: 0,
    panelNoticePath: "/api/zjzx/panel-notice",
    remotePanelNotice: "",
    proBuyUrl: PRO_BUY_URL,
    logLines: [],
    panelHint: "",
    platformHeartbeatSec: 0,
    studyModeHintTimer: null,
  };

  function loadQueue() {
    try {
      const raw = JSON.parse(localStorage.getItem(QUEUE_KEY) || "[]");
      return Array.isArray(raw) ? raw : [];
    } catch (_) {
      return [];
    }
  }

  function saveQueue(csIds) {
    localStorage.setItem(QUEUE_KEY, JSON.stringify(csIds));
  }

  function loadSelectedTpId() {
    return String(localStorage.getItem(PLAN_TP_KEY) || "").trim();
  }

  function saveSelectedTpId(tpId) {
    const id = String(tpId || "").trim();
    localStorage.setItem(PLAN_TP_KEY, id);
    state.selectedTpId = id;
  }

  function getAutoExam() {
    return localStorage.getItem(AUTO_EXAM_KEY) !== "0";
  }

  function setAutoExam(v) {
    localStorage.setItem(AUTO_EXAM_KEY, v ? "1" : "0");
    return v;
  }

  function isTruthyFlag(v) {
    return v === true || v === 1 || v === "1";
  }

  function isFalsyFlag(v) {
    return v === false || v === 0 || v === "0";
  }

  function escHtml(s) {
    return String(s || "")
      .replace(/&/g, "&")
      .replace(/</g, "&lt;")
      .replace(/>/g, "&gt;")
      .replace(/"/g, "&quot;");
  }

  function getMultiplier() {
    const v = parseFloat(localStorage.getItem(MULTIPLIER_KEY) || "2");
    if (!Number.isFinite(v)) return 2;
    return Math.min(5, Math.max(1, v));
  }

  function setMultiplier(v) {
    const n = Math.min(5, Math.max(1, parseFloat(v) || 1));
    localStorage.setItem(MULTIPLIER_KEY, String(n));
    return n;
  }

  function getAdvanceMult() {
    const v = parseFloat(localStorage.getItem(ADVANCE_KEY) || "6");
    if (!Number.isFinite(v)) return 6;
    return Math.min(18, Math.max(1, v));
  }

  function setAdvanceMult(v) {
    const n = Math.min(18, Math.max(1, parseFloat(v) || 1));
    localStorage.setItem(ADVANCE_KEY, String(n));
    return n;
  }

  function getSaveInterval() {
    if (isRealtimeStudyMode()) return getRealtimeChunkSec();
    const v = parseInt(localStorage.getItem(SAVE_INTERVAL_KEY) || "5", 10);
    if (!Number.isFinite(v)) return 300;
    return Math.min(300, Math.max(3, v));
  }

  function setSaveInterval(v) {
    const n = Math.min(300, Math.max(3, parseInt(v, 10) || 300));
    localStorage.setItem(SAVE_INTERVAL_KEY, String(n));
    return n;
  }

  function getAdvanceChunkSec() {
    return Math.min(Math.round(HEARTBEAT_BASE * getAdvanceMult()), MAX_ADVANCE_SEC);
  }

  function readStudyModeSelect() {
    const sel = document.getElementById("zjzx-study-mode");
    const v = String(sel?.value || "").toLowerCase();
    return v === "realtime" || v === "efficiency" ? v : "";
  }

  function hasStudyModeSelected() {
    const ui = readStudyModeSelect();
    if (ui) {
      state.studyMode = ui;
      return true;
    }
    if (state.enabled && (state.studyMode === "realtime" || state.studyMode === "efficiency")) {
      return true;
    }
    state.studyMode = "";
    return false;
  }

  function isRealtimeStudyMode() {
    return getStudyMode() === "realtime";
  }

  function getStudyMode() {
    const ui = readStudyModeSelect();
    if (ui) return ui;
    const m = String(state.studyMode || "");
    if (m === "realtime" || m === "efficiency") return m;
    return "";
  }

  function setStudyMode(mode) {
    const raw = String(mode || "").toLowerCase();
    if (raw !== "realtime" && raw !== "efficiency") {
      state.studyMode = "";
      syncStudyModeUi("");
      return "";
    }
    state.studyMode = raw;
    syncStudyModeUi(raw);
    return raw;
  }

  function clearStudyModeSelection() {
    state.studyMode = "";
    hideStudyModeHint();
    if (state.studyModeHintTimer) {
      clearTimeout(state.studyModeHintTimer);
      state.studyModeHintTimer = null;
    }
    syncStudyModeUi("");
  }

  function resetSessionOnPageLoad() {
    state.enabled = false;
    clearStudyModeSelection();
    localStorage.setItem(STORAGE_KEY, "0");
    localStorage.removeItem(STUDY_MODE_KEY);
  }

  function formatIntervalCn(sec) {
    const s = Math.max(1, Math.round(Number(sec) || HEARTBEAT_BASE));
    if (s >= 60 && s % 60 === 0) return `${s / 60}\u5206\u949f`;
    return `${s}\u79d2`;
  }

  function formatDurationMinutesCn(sec) {
    const s = Math.max(0, Math.round(Number(sec) || 0));
    if (s >= 60 && s % 60 === 0) return `${s / 60}\u5206\u949f`;
    if (s >= 60) {
      const m = (s / 60).toFixed(1).replace(/\.0$/, "");
      return `${m}\u5206\u949f`;
    }
    return `${s}\u79d2`;
  }

  async function ensurePlatformHeartbeatSec(force) {
    if (!force && state.platformHeartbeatSec > 0) return state.platformHeartbeatSec;
    const sec = await fetchHeartbeatSec();
    state.platformHeartbeatSec = Math.min(300, Math.max(30, Math.round(sec) || HEARTBEAT_BASE));
    syncStudyModeHintContent();
    return state.platformHeartbeatSec;
  }

  function getRealtimeChunkSec() {
    return state.platformHeartbeatSec > 0 ? state.platformHeartbeatSec : HEARTBEAT_BASE;
  }

  function formatRealtimeEngineLog(text) {
    const s = String(text || "").trim();
    if (!s.includes("[1:1]")) return s;

    const submitRaw = s.match(/📤\s*\[1:1\]\s*(\d+)s→(\d+)s\s*\(([\d.]+)%\)(?:\s*\[[^\]]+\])?/);
    if (submitRaw) {
      const pct = submitRaw[3];
      return `📤 [1:1] \u5df2\u5b66\u4e60${formatDurationMinutesCn(submitRaw[2])}\uff08${pct}%\uff09`;
    }

    const submitOld = s.match(/📤\s*\[1:1\]\s*\u4e0a\u62a5\u5b66\u4e60\u8fdb\u5ea6\s*(\d+)s→(\d+)s[\uff08(]([\d.]+)%[\uff09)]/);
    if (submitOld) {
      return `📤 [1:1] \u5df2\u5b66\u4e60${formatDurationMinutesCn(submitOld[2])}\uff08${submitOld[3]}%\uff09`;
    }

    const firstWait = s.match(/⏳\s*\[1:1\]\s*\u9996\u6b21\u8fdb\u5165\u7b49\u5f85(\d+)s\u540e\u66f4\u65b0\u8fdb\u5ea6(?:\s*\((\d+)\/(\d+)s\))?/);
    if (firstWait) {
      return `⏳ [1:1] \u9996\u6b21\u8fdb\u5165\u7b49\u5f85${formatIntervalCn(firstWait[1])}\u540e\u66f4\u65b0\u8fdb\u5ea6`;
    }

    const waitRaw = s.match(/⏳\s*\[1:1\]\s*\u7b49\u5f85(\d+)s\u540e\u7ee7\u7eed\s*\((\d+)\/(\d+)s\s*[·•]\s*([\d.]+)%\)/);
    if (waitRaw) {
      const [, waitSec, pos, total, pct] = waitRaw;
      return `⏳ [1:1] ${formatIntervalCn(waitSec)}\u66f4\u65b0\u4e00\u6b21\u8fdb\u5ea6 · \u5df2\u5b8c\u6210 ${formatDurationMinutesCn(pos)}/${formatDurationMinutesCn(total)}\uff08${pct}%\uff09`;
    }

    const waitPartial = s.match(
      /⏳\s*\[1:1\]\s*(?:\u7b49\u5f85)?(\d+\u5206\u949f|\d+\u79d2)?\u66f4\u65b0\u4e00\u6b21\u8fdb\u5ea6\s*·\s*\u5df2\u5b8c\u6210\s*(\d+)\/(\d+)s[\uff08(]([\d.]+)%[\uff09)]/
    );
    if (waitPartial) {
      const waitLabel = waitPartial[1] || formatIntervalCn(getRealtimeChunkSec());
      return `⏳ [1:1] ${waitLabel}\u66f4\u65b0\u4e00\u6b21\u8fdb\u5ea6 · \u5df2\u5b8c\u6210 ${formatDurationMinutesCn(waitPartial[2])}/${formatDurationMinutesCn(waitPartial[3])}\uff08${waitPartial[4]}%\uff09`;
    }

    if (/\u5df2\u5b66\u4e60\d|\u5df2\u5b8c\u6210\s*\d+\u5206\u949f\/\d+\u5206\u949f/.test(s)) return s;

    return s
      .replace(/\u7b49\u5f85(\d+)s\u540e\u7ee7\u7eed/g, (_, n) => `${formatIntervalCn(n)}\u66f4\u65b0\u4e00\u6b21\u8fdb\u5ea6`)
      .replace(/\u6bcf(\d+)s\u4e0a\u62a5/g, (_, n) => `\u6bcf${formatIntervalCn(n)}\u66f4\u65b0\u8fdb\u5ea6`);
  }

  function studyModeLabel(mode) {
    const m = mode !== undefined ? String(mode) : getStudyMode();
    if (m === "realtime") return "1:1\u65f6\u957f\u6162\u5237\u6a21\u5f0f";
    if (m === "efficiency") return "\u6548\u7387\u6a21\u5f0f";
    return "\u672a\u9009\u62e9";
  }

  function getMode() {
    const m = localStorage.getItem(MODE_KEY) || "background";
    return ["background", "autoplay", "manual"].includes(m) ? m : "background";
  }

  function setMode(m) {
    localStorage.setItem(MODE_KEY, m);
    return m;
  }

  function applyLockedPanelDefaults() {
    setMode("background");
    if (getStudyMode() === "efficiency") {
      setSaveInterval(60);
      setMultiplier(2);
    }
    setAutoExam(true);
  }

  function shouldPatchPageLearnSave() {
    return getMode() === "manual" || getMode() === "autoplay";
  }

  function loadBgState() {
    try {
      return JSON.parse(localStorage.getItem(BG_STATE_KEY) || "null") || {};
    } catch (_) {
      return {};
    }
  }

  function saveBgState(bg) {
    localStorage.setItem(BG_STATE_KEY, JSON.stringify(bg));
  }

  function flattenChapters(nodes, out) {
    out = out || [];
    for (const n of nodes || []) {
      if (n.cptId) out.push(n);
      if (n.childs?.length) flattenChapters(n.childs, out);
    }
    return out;
  }

  function patchLearnSaveBody(body) {
    if (!shouldPatchPageLearnSave()) return body;
    const mult = getMultiplier();
    if (mult <= 1 || body == null) return body;

    const raw = typeof body === "string" ? body : body instanceof URLSearchParams ? body.toString() : null;
    if (!raw || raw[0] !== "{") return body;

    try {
      const data = JSON.parse(raw);
      const p = data.payload;
      if (!p || !p.studyTime || p.studyTime < 1) return body;

      const start = Number(p.startTime) || 0;
      const end = Number(p.endTime);
      if (!Number.isFinite(end) || end <= start) return body;

      const origStudy = p.studyTime;
      const span = end - start;
      const newStudy = Math.min(Math.round(origStudy * mult), Math.round(span * mult), 900);

      if (newStudy <= origStudy) return body;

      p.studyTime = newStudy;
      console.log(
        `[\u4e13\u6280\u770b\u8bfe] learnSave \u5b66\u65f6 ${origStudy}s → ${newStudy}s\uff08${mult}x\uff0c\u4ecd\u7ea65\u5206\u949f\u89e6\u53d1\u4e00\u6b21\uff09`
      );
      return JSON.stringify(data);
    } catch (_) {
      return body;
    }
  }

  function isLearnSaveUrl(url) {
    return url && String(url).includes("stdCustLearnRecord/learnSave/v1.lyai");
  }

  const xhrOpen = XMLHttpRequest.prototype.open;
  XMLHttpRequest.prototype.open = function (method, url) {
    this._zjzxUrl = url;
    return xhrOpen.apply(this, arguments);
  };

  const xhrSend = XMLHttpRequest.prototype.send;
  XMLHttpRequest.prototype.send = function (body) {
    if (body && isLearnSaveUrl(this._zjzxUrl)) {
      body = patchLearnSaveBody(body);
    }
    return xhrSend.call(this, body);
  };

  const nativeFetch = window.fetch;
  if (nativeFetch) {
    window.fetch = function (input, init) {
      const url = typeof input === "string" ? input : input?.url || "";
      if (isLearnSaveUrl(url) && init?.body) {
        init = Object.assign({}, init, { body: patchLearnSaveBody(init.body) });
      }
      return nativeFetch.call(this, input, init);
    };
  }

  function log(msg) {
    let text = String(msg || "");
    if (isRealtimeStudyMode() && text.includes("[1:1]")) {
      text = formatRealtimeEngineLog(text);
    }
    const line = `[\u4e13\u6280\u770b\u8bfe] ${text}`;
    console.log(line);
    state.lastAction = text;
    const ts = new Date().toLocaleTimeString("zh-CN", { hour12: false });
    state.logLines.push(`${ts} ${text}`);
    if (state.logLines.length > 80) state.logLines.shift();
    appendLogLine(`${ts} ${text}`);
    updatePanel();
  }

  function courseDisplayName(nameOrCourse) {
    const raw =
      typeof nameOrCourse === "string"
        ? nameOrCourse
        : nameOrCourse?.csName || nameOrCourse?.csId || "\u8bfe\u7a0b";
    return String(raw).trim() || "\u8bfe\u7a0b";
  }

  function setPanelHint(msg) {
    state.panelHint = String(msg || "").trim();
    updatePanel();
  }

  function clearPanelHint() {
    if (!state.panelHint) return;
    state.panelHint = "";
    updatePanel();
  }

  function appendLogLine(text) {
    const box = document.getElementById("zjzx-run-log");
    if (!box) return;
    const div = document.createElement("div");
    div.className = "zjzx-log-row";
    div.textContent = text;
    box.appendChild(div);
    box.scrollTop = box.scrollHeight;
  }

  function clearRunLog() {
    state.logLines = [];
    const box = document.getElementById("zjzx-run-log");
    if (box) box.innerHTML = "";
  }

  function getCloudApiBase() {
    return DEFAULT_CLOUD_API_BASE;
  }

  function setCloudApiBase() {
    state.cloudApiBase = DEFAULT_CLOUD_API_BASE;
  }

  function getLearningUserId() {
    return String(getUserData()?.custId || "").trim();
  }

  function formatLeaseExpireText(expSec) {
    const ex = Number(expSec || 0);
    if (!Number.isFinite(ex) || ex <= 0) return "—";
    const d = new Date(ex * 1000);
    if (Number.isNaN(d.getTime())) return "—";
    return d.toLocaleString("zh-CN", { hour12: false });
  }

  function resolveLeaseExpireSec(data) {
    const raw = data?.exp ?? data?.expire_at ?? data?.expires_at ?? data?.lease_exp ?? 0;
    const n = Number(raw || 0);
    if (Number.isFinite(n) && n > 1e12) return Math.floor(n / 1000);
    return Number.isFinite(n) ? Math.floor(n) : 0;
  }

  function resolveProExpireSec(data) {
    const raw = data?.pro_expires_at ?? data?.proExpiresAt ?? data?.pro_expire_at ?? 0;
    const n = Number(raw || 0);
    if (Number.isFinite(n) && n > 1e12) return Math.floor(n / 1000);
    return Number.isFinite(n) ? Math.floor(n) : 0;
  }

  function readCloudLeaseCache() {
    try {
      const raw = localStorage.getItem(CLOUD_LEASE_CACHE_KEY);
      if (!raw) return null;
      const parsed = JSON.parse(raw);
      if (!parsed || typeof parsed !== "object") return null;
      const lease = String(parsed.lease || "").trim();
      const exp = Number(parsed.exp || 0);
      if (!lease || !Number.isFinite(exp) || exp <= 0) return null;
      return {
        lease,
        exp,
        tier: String(parsed.tier || "").trim(),
        freeVideoLimit: Number(parsed.freeVideoLimit ?? parsed.free_video_limit ?? parsed.freeChapterLimit ?? 1),
        freeUsedVideos: Number(parsed.freeUsedVideos ?? parsed.free_used_videos ?? parsed.freeUsedChapters ?? 0),
        proExpireAt: Number(parsed.proExpireAt ?? parsed.pro_expire_at ?? 0),
      };
    } catch (_) {
      return null;
    }
  }

  function writeCloudLeaseCache(lease, exp, extra) {
    if (!lease || !exp) {
      localStorage.removeItem(CLOUD_LEASE_CACHE_KEY);
      return;
    }
    localStorage.setItem(CLOUD_LEASE_CACHE_KEY, JSON.stringify(Object.assign({ lease, exp }, extra || {})));
  }

  function readCloudLastState() {
    try {
      const raw = localStorage.getItem(CLOUD_LAST_STATE_KEY);
      if (!raw) return null;
      const p = JSON.parse(raw);
      if (!p || typeof p !== "object") return null;
      return {
        tier: String(p.tier || "").trim(),
        freeVideoLimit: Number(p.freeVideoLimit ?? p.free_video_limit ?? 1),
        freeUsedVideos: Number(p.freeUsedVideos ?? p.free_used_videos ?? 0),
      };
    } catch (_) {
      return null;
    }
  }

  function writeCloudLastState(partial) {
    try {
      const prev = readCloudLastState() || {};
      localStorage.setItem(CLOUD_LAST_STATE_KEY, JSON.stringify(Object.assign({}, prev, partial || {}, { ts: Date.now() })));
    } catch (_) {}
  }

  function writeCloudProExpireCache(token, exp) {
    try {
      const tk = String(token || "").trim();
      if (!tk || !exp) {
        localStorage.removeItem(CLOUD_PRO_EXPIRE_CACHE_KEY);
        return;
      }
      localStorage.setItem(CLOUD_PRO_EXPIRE_CACHE_KEY, JSON.stringify({ token: tk, exp: Math.floor(exp) }));
    } catch (_) {}
  }

  function readCloudProExpireCache() {
    try {
      const raw = localStorage.getItem(CLOUD_PRO_EXPIRE_CACHE_KEY);
      if (!raw) return null;
      const p = JSON.parse(raw);
      if (!p?.token || !p?.exp) return null;
      return { token: String(p.token), exp: Number(p.exp) };
    } catch (_) {
      return null;
    }
  }

  function gmRequestWithStatus(url, method, headers, data) {
    return new Promise((resolve, reject) => {
      const req = {
        method: method || "GET",
        url,
        headers: headers || {},
        timeout: 30000,
        withCredentials: false,
        responseType: "text",
        onload: (res) => resolve({ status: res.status, text: res.responseText || "" }),
        onerror: () => reject(new Error("\u7f51\u7edc\u9519\u8bef " + url)),
        ontimeout: () => reject(new Error("\u8bf7\u6c42\u8d85\u65f6 " + url)),
      };
      if (data != null) req.data = data;
      if (typeof GM_xmlhttpRequest === "function") {
        GM_xmlhttpRequest(req);
        return;
      }
      const xhr = new XMLHttpRequest();
      xhr.open(req.method, url, true);
      xhr.timeout = req.timeout;
      Object.keys(req.headers).forEach((k) => xhr.setRequestHeader(k, req.headers[k]));
      xhr.onload = () => resolve({ status: xhr.status, text: xhr.responseText || "" });
      xhr.onerror = () => reject(new Error("\u7f51\u7edc\u9519\u8bef " + url));
      xhr.ontimeout = () => reject(new Error("\u8bf7\u6c42\u8d85\u65f6 " + url));
      xhr.send(data);
    });
  }

  async function _rq(path, method, payload) {
    const base = getCloudApiBase();
    const url = `${base}${path.startsWith("/") ? path : `/${path}`}`;
    const headers = { Accept: "application/json", "Content-Type": "application/json" };
    const luid = getLearningUserId();
    if (luid) headers["x-learning-user-id"] = luid;
    if (state.cloudToken) headers.Authorization = `Bearer ${state.cloudToken}`;
    let reqPayload = payload;
    if (reqPayload && typeof reqPayload === "object") {
      reqPayload = Object.assign({}, reqPayload);
      if (path !== "/api/zjzx/lease" && state.cloudLease && reqPayload.lease == null) {
        reqPayload.lease = state.cloudLease;
      }
    }
    const body = reqPayload == null ? null : JSON.stringify(reqPayload);
    const res = await gmRequestWithStatus(url, method || "POST", headers, body);
    const text = String(res.text || "").trim();
    let data = {};
    if (text) data = JSON.parse(text);
    if (res.status < 200 || res.status >= 300) {
      const errCode = String(data.detail || data.message || data.code || `http_${res.status}`);
      throw new Error(errCode);
    }
    return data;
  }

  async function _el(forceRefresh) {
    const now = Math.floor(Date.now() / 1000);
    if (!forceRefresh && state.cloudLease && state.cloudLeaseExp - now > 60) return true;
    if (!forceRefresh) {
      const cached = readCloudLeaseCache();
      if (cached && cached.exp - now > 60) {
        state.cloudLease = cached.lease;
        state.cloudLeaseExp = cached.exp;
        state.cloudProExpireAt = Number(cached.proExpireAt || 0);
        if (cached.tier) state.cloudTier = cached.tier;
        if (cached.freeVideoLimit > 0) state.freeVideoLimit = cached.freeVideoLimit;
        if (cached.freeUsedVideos >= 0) state.freeUsedVideos = cached.freeUsedVideos;
        updateCloudPanelUI();
        return true;
      }
    }
    const luid = getLearningUserId();
    if (!luid) throw new Error("\u672a\u767b\u5f55\uff0c\u65e0\u6cd5\u83b7\u53d6\u4e91\u7aef\u6388\u6743");
    let data;
    try {
      const leaseBody = { learning_user_id: luid };
      data = await _rq("/api/zjzx/lease", "POST", leaseBody);
      state.cloudRevoked = false;
    } catch (e) {
      const em = String(e?.message || e);
      if (/(revoked|invalid token|expired)/i.test(em)) {
        state.cloudRevoked = true;
        state.cloudTier = "revoked";
        state.cloudLease = "";
        state.cloudLeaseExp = 0;
        writeCloudLeaseCache("", 0);
        updateCloudPanelUI();
      }
      throw e;
    }
    const lease = String(data.lease || "");
    const exp = resolveLeaseExpireSec(data);
    let tier = String(data.tier || "").trim() || (state.cloudToken ? "pro" : "free");
    const proExpireAt = resolveProExpireSec(data);
    state.cloudLease = lease;
    state.cloudLeaseExp = exp;
    state.cloudProExpireAt = proExpireAt > 0 ? proExpireAt : 0;
    state.cloudTier = tier;
    state.freeVideoLimit = Number(
      data.free_video_limit ?? data.free_chapter_limit ?? data.freeVideoLimit ?? state.freeVideoLimit ?? 1
    );
    state.freeUsedVideos = Number(
      data.free_used_videos ?? data.free_used_chapters ?? data.freeUsedVideos ?? 0
    );
    writeCloudLeaseCache(lease, exp, {
      tier: state.cloudTier,
      freeVideoLimit: state.freeVideoLimit,
      freeUsedVideos: state.freeUsedVideos,
      proExpireAt: state.cloudProExpireAt,
    });
    writeCloudLastState({
      tier: state.cloudTier,
      freeVideoLimit: state.freeVideoLimit,
      freeUsedVideos: state.freeUsedVideos,
    });
    if (tier === "pro" && state.cloudProExpireAt > 0) {
      writeCloudProExpireCache(state.cloudToken, state.cloudProExpireAt);
    }
    updateCloudPanelUI();
    return !!lease;
  }

  async function cloudVerifyToken() {
    if (!state.cloudToken) return true;
    const base = getCloudApiBase();
    const url = `${base}/api/license/verify`;
    const headers = { Accept: "application/json", Authorization: `Bearer ${state.cloudToken}` };
    const luid = getLearningUserId();
    if (luid) headers["x-learning-user-id"] = luid;
    const res = await gmRequestWithStatus(url, "GET", headers, null);
    const text = String(res.text || "").trim();
    let data = {};
    if (text) data = JSON.parse(text);
    if (res.status < 200 || res.status >= 300 || !data.ok) {
      throw new Error(String(data.message || data.detail || "Token \u6821\u9a8c\u5931\u8d25"));
    }
    return true;
  }

  function syncCloudQuotaFromResponse(data) {
    if (!data || typeof data !== "object") return;
    if (data.tier) state.cloudTier = String(data.tier);
    const lim = data.free_video_limit ?? data.free_chapter_limit ?? data.limit;
    const used = data.free_used_videos ?? data.free_used_chapters ?? data.used;
    if (lim != null) state.freeVideoLimit = Number(lim);
    if (used != null) state.freeUsedVideos = Number(used);
    writeCloudLastState({
      tier: state.cloudTier,
      freeVideoLimit: state.freeVideoLimit,
      freeUsedVideos: state.freeUsedVideos,
    });
    updateCloudPanelUI();
  }

  async function zjzxEngineStart(kind, context, cfg) {
    await _el(false);
    const data = await _rq("/api/zjzx/study/engine/start", "POST", {
      kind: String(kind || ""),
      context: context || {},
      config: cfg || {},
    });
    syncCloudQuotaFromResponse(data);
    return data;
  }

  async function zjzxEngineStep(sessionId, event, lastResult, contextPatch) {
    await _el(false);
    const data = await _rq("/api/zjzx/study/engine/step", "POST", {
      session_id: String(sessionId || ""),
      event: String(event || "tick"),
      last_result: lastResult == null ? null : lastResult,
      context_patch: contextPatch == null ? null : contextPatch,
    });
    syncCloudQuotaFromResponse(data);
    return data;
  }

  async function executeZjzxCommand(cmd) {
    const c = cmd || {};
    const t = String(c.type || "");
    if (t === "platform_post") {
      const res = await apiPost(c.path, c.payload || {});
      return { event: "submit_result", lastResult: { data: res, http_status: 200 } };
    }
    if (t === "wait") {
      await sleep(Math.max(500, Number(c.ms || 1000)));
      return { event: "tick", lastResult: null };
    }
    if (t === "done") {
      return {
        terminal: true,
        ok: !!c.success,
        skipped: !!c.skipped,
        score: c.score,
        msg: c.message || "\u5b8c\u6210",
      };
    }
    if (t === "failed") {
      return { terminal: true, ok: false, msg: c.message || "failed" };
    }
    return { event: "tick", lastResult: null };
  }

  function shouldLogEngineLine(logText, options) {
    const s = String(logText || "");
    if (!s) return false;
    if (options && options.realtime) return /\[1:1\]|learnSave \u672a\u6210\u529f|\u9996\u6b21\u8fdb\u5165\u7b49\u5f85/.test(s);
    return true;
  }

  async function runZjzxEngineLoop(startRes, options) {
    const quiet = !!(options && options.quiet);
    const realtime = !!(options && options.realtime);
    let sessionId = String(startRes.session_id || "");
    let cmd = startRes.command;
    if (!quiet && shouldLogEngineLine(startRes.log, options)) {
      log(realtime ? formatRealtimeEngineLog(startRes.log) : startRes.log);
    }
    const maxSteps = Number(options && options.maxSteps) || (realtime ? 320 : 24);
    for (let i = 0; i < maxSteps && cmd; i++) {
      const out = await executeZjzxCommand(cmd);
      if (out.terminal !== undefined) return out;
      const next = await zjzxEngineStep(sessionId, out.event, out.lastResult, null);
      sessionId = String(next.session_id || sessionId);
      if (!quiet && shouldLogEngineLine(next.log, options)) {
        log(realtime ? formatRealtimeEngineLog(next.log) : next.log);
      }
      cmd = next.command;
    }
    return { terminal: true, ok: false, msg: "\u4e91\u7aef\u5f15\u64ce\u6b65\u6570\u8d85\u9650" };
  }

  async function runZjzxExamLoop(startRes, courseName) {
    let sessionId = String(startRes.session_id || "");
    let cmd = startRes.command;
    let questionCount = 0;
    let submitAnnounced = false;
    const maxSteps = 24;
    for (let i = 0; i < maxSteps && cmd; i++) {
      const out = await executeZjzxCommand(cmd);
      if (out.terminal !== undefined) {
        if (out.ok) {
          const score = out.score != null && out.score !== "" ? out.score : "—";
          log(`\u8bfe\u7a0b${courseName}\u8003\u8bd5\u5b8c\u6210\uff0c\u5f97\u5206\uff1a${score}\u5206`);
        }
        return out;
      }
      const next = await zjzxEngineStep(sessionId, out.event, out.lastResult, null);
      sessionId = String(next.session_id || sessionId);
      const slog = String(next.log || "");
      const batchM = slog.match(/\u6279\u91cf\u4fdd\u5b58\s*(\d+)/);
      if (batchM) {
        questionCount = Number(batchM[1]) || questionCount;
        if (!submitAnnounced && questionCount > 0) {
          submitAnnounced = true;
          log(`\u8bfe\u7a0b${courseName}\u8003\u8bd5\u5f00\u59cb\uff0c\u5171${questionCount}\u9053\u9898\uff0c\u5df2\u63d0\u4ea4\u7b54\u6848`);
        }
      }
      if (/\u8003\u8bd5\u4f5c\u7b54\u4e2d/.test(slog)) {
        log(`\u8bfe\u7a0b${courseName}\uff1a${slog}`);
      }
      if (/^\u4ea4\u5377/.test(slog)) {
        log(`\u8bfe\u7a0b${courseName}\u5f00\u59cb\u4ea4\u5377`);
      }
      cmd = next.command;
    }
    return { terminal: true, ok: false, msg: "\u4e91\u7aef\u5f15\u64ce\u6b65\u6570\u8d85\u9650" };
  }

  async function ensureCloudReady() {
    if (!isLoggedIn()) {
      log("\u8bf7\u5148\u767b\u5f55\u4e13\u6280\u5e73\u53f0");
      return false;
    }
    try {
      if (state.cloudToken) await cloudVerifyToken();
      await _el(false);
    } catch (err) {
      log("\u4e91\u7aef\u6388\u6743\u5931\u8d25\uff1a" + (err.message || err));
      return false;
    }
    const tier = String(state.cloudTier || "").toLowerCase();
    if (tier === "pro") return true;
    if (tier === "free") {
      if (Number(state.freeUsedVideos) >= Number(state.freeVideoLimit)) {
        log(`\u514d\u8d39\u989d\u5ea6\u5df2\u7528\u5b8c\uff08${state.freeUsedVideos}/${state.freeVideoLimit}\uff09\uff0c\u8bf7\u5347\u7ea7 Pro`);
        switchPanelTab("settings");
        openProModal();
        return false;
      }
      return true;
    }
    log("\u4e91\u7aef\u6388\u6743\u72b6\u6001\u5f02\u5e38\uff0c\u8bf7\u68c0\u67e5 Token \u6216\u4e91\u7aef\u5730\u5740");
    return false;
  }

  function cloudServiceOrigin() {
    try {
      return new URL(getCloudApiBase()).origin;
    } catch (_) {
      return "";
    }
  }

  async function fetchPanelNotice() {
    const origin = cloudServiceOrigin();
    if (!origin) return;
    const path = String(state.panelNoticePath || "/api/zjzx/panel-notice");
    const url = `${origin}${path.startsWith("/") ? path : `/${path}`}`;
    try {
      const res = await gmRequestWithStatus(url, "GET", {}, null);
      if (res.status >= 200 && res.status < 300) {
        state.remotePanelNotice = String(res.text || "").trim() || PANEL_NOTICE_FALLBACK;
        const el = document.querySelector("#zjzx-ann-text");
        if (el) el.textContent = state.remotePanelNotice;
      }
    } catch (_) {}
  }

  async function fetchClientConfig() {
    try {
      const data = await gmRequestWithStatus(
        `${getCloudApiBase()}/api/zjzx/client-config`,
        "GET",
        { Accept: "application/json" },
        null
      );
      if (data.status >= 200 && data.status < 300 && data.text) {
        const j = JSON.parse(data.text);
        if (j?.panelNoticePath) state.panelNoticePath = String(j.panelNoticePath);
        if (j?.freeVideoLimit != null) state.freeVideoLimit = Number(j.freeVideoLimit) || 1;
        if (j?.proBuyUrl) state.proBuyUrl = String(j.proBuyUrl).trim() || PRO_BUY_URL;
      }
    } catch (_) {}
    await fetchPanelNotice();
  }

  function getProBuyUrl() {
    return String(state.proBuyUrl || PRO_BUY_URL).trim() || PRO_BUY_URL;
  }

  function isProBuyOpen() {
    return Date.now() >= PRO_BUY_OPEN_MS;
  }

  function syncProBuyButtonUi() {
    const btn = document.getElementById("zjzx-pro-buy-link");
    if (!btn) return;
    const open = isProBuyOpen();
    btn.disabled = !open;
    btn.textContent = open ? "\u524d\u5f80\u8d2d\u4e70\u9875\u5f00\u901a Pro" : "6\u67086\u65e50\u70b9\u5f00\u653e\u8d2d\u4e70";
    btn.title = open ? "\u6253\u5f00\u8d2d\u4e70\u9875\u83b7\u53d6 Token" : "6\u67085\u65e5\u516c\u6d4b\u8bf7\u4eceQQ\u7fa4\u83b7\u53d6Token";
  }

  function openProBuyPage() {
    if (!isProBuyOpen()) {
      log("\u8d2d\u4e70\u9875\u5c06\u4e8e6\u67086\u65e50\u70b9\u5f00\u653e\uff0c\u516c\u6d4b\u8bf7\u52a0\u5165QQ\u7fa4\u83b7\u53d6Token");
      return;
    }
    const url = getProBuyUrl();
    try {
      GM_openInTab(url, { active: true, insert: true, setParent: true });
    } catch (_) {
      window.open(url, "_blank", "noopener,noreferrer");
    }
  }

  function openProModal() {
    syncProBuyButtonUi();
    const vm = document.getElementById("zjzx-pro-modal");
    if (vm) vm.style.display = "flex";
  }

  function closeProModal() {
    const vm = document.getElementById("zjzx-pro-modal");
    if (vm) vm.style.display = "none";
  }

  function createProModal() {
    const old = document.getElementById("zjzx-pro-modal");
    if (old) old.remove();
    const modal = document.createElement("div");
    modal.id = "zjzx-pro-modal";
    modal.innerHTML = `
      <div class="zjzx-pro-card">
        <div class="zjzx-pro-title">\u5f00\u901a Pro</div>
        <div class="zjzx-pro-sub">Pro \u7528\u6237\u53ef\u65e0\u9650\u5236\u89c6\u9891\u5b66\u4e60\uff0c\u5e76\u81ea\u52a8\u5b8c\u6210\u8bfe\u7a0b\u8003\u8bd5</div>
        <div class="zjzx-pro-sec">
          <h4>Pro \u6743\u76ca</h4>
          <ul>
            <li>\u89e3\u9664\u514d\u8d39\u4f53\u9a8c\u89c6\u9891\u6b21\u6570\u9650\u5236\uff0c\u5df2\u9009\u8bfe\u7a0b\u53ef\u6301\u7eed\u5b66\u4e60</li>
            <li>\u652f\u6301\u5b66\u5b8c\u540e\u81ea\u52a8\u8003\u8bd5\u4ea4\u5377</li>
            <li>Pro \u6709\u6548\u671f 10 \u5929\uff08\u7ed1\u5b9a\u4e13\u6280\u8d26\u53f7\uff0c\u5207\u6362\u8d26\u53f7\u5931\u6548\uff09</li>
          </ul>
          <div class="zjzx-pro-tip zjzx-pro-tip-info">\u63d0\u793a\uff1aPro \u6743\u9650\u7ed1\u5b9a\u5f53\u524d\u767b\u5f55\u7684\u4e13\u6280\u8d26\u53f7\uff0c\u8bf7\u52ff\u4e0e\u4ed6\u4eba\u5171\u7528 Token\u3002</div>
        </div>
        <div class="zjzx-pro-sec">
          <h4>\u5f00\u901a\u65b9\u5f0f</h4>
          <p>1) \u52a0\u5165 QQ \u7fa4 ${QQ_GROUP_NUMBER}\uff0c\u8054\u7cfb\u7ba1\u7406\u5458\u83b7\u53d6 Token\uff08\u516c\u6d4b\u671f\u95f4\u622a\u6b626\u67085\u65e5\uff0c\u53cd\u9988Bug\u53ef\u4f18\u5148\u4f53\u9a8c\uff09</p>
          <div class="zjzx-pro-buy">
            <div>
              <p style="margin:0 0 6px 0;">2) \u524d\u5f80\u8d2d\u4e70\u9875\u83b7\u53d6 Token\uff0c24 \u5c0f\u65f6\u81ea\u52a9\u53d1\u8d27</p>
              <div class="zjzx-pro-muted">\u8d2d\u5f97 Token \u540e\uff1a\u5728\u8bbe\u7f6e\u9875 Token \u8f93\u5165\u6846\u7c98\u8d34\uff0c\u70b9\u51fb\u300c\u4fdd\u5b58\u5e76\u6821\u9a8c\u300d\u3002</div>
            </div>
            <button id="zjzx-pro-buy-link" class="zjzx-pro-buy-btn" type="button">\u524d\u5f80\u8d2d\u4e70\u9875\u5f00\u901a Pro</button>
          </div>
          <div class="zjzx-pro-tip">\u91cd\u8981\uff1a\u8bf7\u52ff\u968f\u610f\u6cc4\u9732 Token\uff0c\u907f\u514d\u8d26\u53f7\u88ab\u591a\u4eba\u5171\u7528\u5bfc\u81f4\u5931\u6548\u3002</div>
        </div>
        <div class="zjzx-pro-actions">
          <button id="zjzx-pro-close" class="zjzx-pro-close" type="button">\u6211\u77e5\u9053\u4e86</button>
        </div>
      </div>
    `;
    document.body.appendChild(modal);
    modal.addEventListener("click", (e) => {
      if (e.target === modal) closeProModal();
    });
    modal.querySelector("#zjzx-pro-close")?.addEventListener("click", closeProModal);
    modal.querySelector("#zjzx-pro-buy-link")?.addEventListener("click", openProBuyPage);
    syncProBuyButtonUi();
  }

  function switchPanelTab(name) {
    document.querySelectorAll(".zjzx-tab-btn").forEach((el) => {
      el.classList.toggle("active", el.dataset.tab === name);
    });
    document.querySelectorAll(".zjzx-pane").forEach((el) => {
      el.classList.toggle("active", el.dataset.pane === name);
    });
  }

  function formatCloudTierText(tier) {
    if (state.cloudRevoked) return "\u5df2\u7981\u7528";
    const t = String(tier || "").trim().toLowerCase();
    if (t === "pro") return "Pro \u4f1a\u5458";
    if (t === "free") return "\u514d\u8d39\u4f53\u9a8c";
    if (t === "revoked") return "\u5df2\u7981\u7528";
    if (t === "unknown") return "\u672a\u6821\u9a8c";
    return tier ? String(tier) : "\u672a\u6821\u9a8c";
  }

  function updateCloudPanelUI() {
    const tierEl = document.querySelector("#zjzx-cloud-tier");
    const freeEl = document.querySelector("#zjzx-cloud-free");
    const freeLabelEl = document.querySelector("#zjzx-cloud-free-label");
    const tokenInput = document.querySelector("#zjzx-cloud-token");
    if (tierEl) {
      tierEl.textContent = formatCloudTierText(state.cloudTier);
      tierEl.style.color = state.cloudRevoked || String(state.cloudTier || "").toLowerCase() === "revoked" ? "#dc2626" : "#0f172a";
    }
    if (state.cloudRevoked) {
      if (freeLabelEl) freeLabelEl.textContent = "\u6388\u6743\u72b6\u6001";
      if (freeEl) freeEl.textContent = "Token \u5df2\u7981\u7528";
    } else if (String(state.cloudTier || "").toLowerCase() === "pro") {
      if (freeLabelEl) freeLabelEl.textContent = "Pro \u5230\u671f";
      if (freeEl) freeEl.textContent = formatLeaseExpireText(state.cloudProExpireAt || state.cloudLeaseExp);
    } else {
      if (freeLabelEl) freeLabelEl.textContent = "\u514d\u8d39\u4f53\u9a8c\u89c6\u9891";
      if (freeEl) freeEl.textContent = `${state.freeUsedVideos}/${state.freeVideoLimit}`;
    }
    if (tokenInput && tokenInput !== document.activeElement) tokenInput.value = state.cloudToken || "";
  }

  function sleep(ms) {
    return new Promise((resolve) => setTimeout(resolve, ms));
  }

  function getCookie(name) {
    const m = document.cookie.match(new RegExp("(?:^|; )" + name + "=([^;]*)"));
    return m ? decodeURIComponent(m[1]) : "";
  }

  function getUserData() {
    try {
      const raw = getCookie("userData_lenye");
      if (raw) return JSON.parse(raw);
    } catch (_) {}
    try {
      const raw = localStorage.getItem("userData_lenye");
      if (raw) return JSON.parse(raw);
    } catch (_) {}
    return null;
  }

  function isLoggedIn() {
    return !!(getCookie("SESSION_TOKEN") || getUserData()?.SESSION_TOKEN);
  }

  function pageType() {
    const path = location.pathname;
    const qs = new URLSearchParams(location.search);
    if (path.includes("courseplay")) return "courseplay";
    if (path.includes("personcenter") && qs.get("type") === "train") return "train";
    if (path.includes("personcenter")) return "personcenter";
    if (path === "/" || path === "/index.html") return "home";
    return "other";
  }

  function getCourseParams() {
    const qs = new URLSearchParams(location.search);
    return { csId: qs.get("id") || "", tpId: qs.get("tpId") || "" };
  }

  function courseplayPath(csId, tpId) {
    return `/courseplay?id=${csId}&tpId=${tpId}`;
  }

  function readNavGuard() {
    try {
      return JSON.parse(sessionStorage.getItem(NAV_GUARD_KEY) || "{}");
    } catch (_) {
      return {};
    }
  }

  function writeNavGuard(url) {
    sessionStorage.setItem(
      NAV_GUARD_KEY,
      JSON.stringify({ url, time: Date.now() })
    );
  }

  function isSameCoursePage(csId) {
    return pageType() === "courseplay" && getCourseParams().csId === csId;
  }

  function canNavigate(url) {
    const target = new URL(url, location.origin).pathname + new URL(url, location.origin).search;
    const current = location.pathname + location.search;
    if (target === current) return false;

    const guard = readNavGuard();
    if (guard.url === target && Date.now() - (guard.time || 0) < NAV_COOLDOWN_MS) {
      return false;
    }
    return true;
  }

  function safeNavigate(url) {
    if (!canNavigate(url)) return false;
    writeNavGuard(url);
    log("\u8df3\u8f6c\uff1a" + url);
    location.href = url;
    return true;
  }

  function canClickChapter(chapterId) {
    if (!chapterId) return false;
    const guard = readNavGuard();
    if (guard.chapterId === chapterId && Date.now() - (guard.chapterClickAt || 0) < CHAPTER_CLICK_COOLDOWN_MS) {
      return false;
    }
    return true;
  }

  function markChapterClick(chapterId) {
    const guard = readNavGuard();
    guard.chapterId = chapterId;
    guard.chapterClickAt = Date.now();
    sessionStorage.setItem(NAV_GUARD_KEY, JSON.stringify(guard));
  }

  function visible(el) {
    if (!el) return false;
    const st = getComputedStyle(el);
    if (st.display === "none" || st.visibility === "hidden" || st.opacity === "0") return false;
    return el.offsetWidth > 0 || el.offsetHeight > 0;
  }

  function clickEl(el) {
    if (!el) return false;
    el.dispatchEvent(new MouseEvent("click", { bubbles: true, cancelable: true, view: window }));
    return true;
  }

  function findVisibleButton(root, pattern) {
    return Array.from(root.querySelectorAll("button, .el-button, a")).find((el) =>
      pattern.test((el.textContent || "").replace(/\s+/g, ""))
    );
  }

  function dismissDialogs() {
    const onCoursePlay = pageType() === "courseplay";
    document.querySelectorAll(".el-message-box__wrapper, .el-dialog__wrapper").forEach((wrapper) => {
      if (!visible(wrapper)) return;
      const btn = onCoursePlay
        ? findVisibleButton(wrapper, /^(\u786e\u5b9a|\u77e5\u9053\u4e86|\u7ee7\u7eed|\u786e\u8ba4)$/) ||
          findVisibleButton(wrapper, /(\u786e\u5b9a|\u77e5\u9053\u4e86)/)
        : findVisibleButton(wrapper, /^(\u53bb\u5b66\u4e60|\u786e\u5b9a|\u77e5\u9053\u4e86|\u7ee7\u7eed|\u786e\u8ba4)$/) ||
          findVisibleButton(wrapper, /(\u53bb\u5b66\u4e60|\u786e\u5b9a)/);
      if (btn) clickEl(btn);
    });
  }

  function isFaceDialogVisible() {
    const qr = document.getElementById("qrCode");
    if (qr && visible(qr.closest(".el-dialog__wrapper") || qr)) return true;
    return Array.from(document.querySelectorAll(".el-dialog__wrapper")).some((w) => {
      if (!visible(w)) return false;
      const t = w.textContent || "";
      return /\u4eba\u8138|\u8bc6\u522b|\u626b\u7801|\u4e0a\u4f20\u5934\u50cf/.test(t);
    });
  }

  function getVideoEl() {
    const box = document.getElementById("player_video");
    if (box) {
      const v = box.querySelector("video");
      if (v) return v;
    }
    return document.querySelector("#player_video video, .playboxin video, video");
  }

  function getPlayButton() {
    return (
      document.querySelector(".e3cplay-play, .vjs-play-control, .xgplayer-play, .play-btn") ||
      document.querySelector("#player_video .vjs-big-play-button")
    );
  }

  async function ensurePlaying() {
    if (isFaceDialogVisible()) {
      if (!state.faceWaiting) {
        state.faceWaiting = true;
        log("\u68c0\u6d4b\u5230\u4eba\u8138\u8bc6\u522b\uff0c\u8bf7\u624b\u673a\u626b\u7801\u540e\u7ee7\u7eed");
      }
      return;
    }
    state.faceWaiting = false;

    const video = getVideoEl();
    if (!video) return;

    if (video.ended) return;

    if (video.paused) {
      try {
        video.muted = true;
        await video.play();
        log("\u5df2\u81ea\u52a8\u64ad\u653e\u89c6\u9891");
        return;
      } catch (_) {
        const btn = getPlayButton();
        if (btn) {
          clickEl(btn);
          log("\u5df2\u70b9\u51fb\u64ad\u653e\u6309\u94ae");
        }
      }
    }
  }

  function chapterDone(link) {
    const img = link.querySelector("img.course_play_percent");
    if (!img || !img.src) return false;
    return /play100|100/.test(img.src) || /play100/.test(img.getAttribute("src") || "");
  }

  function getChapterLinks() {
    return Array.from(document.querySelectorAll("a.cptresult_a"));
  }

  function getCurrentChapterId() {
    const active = document.querySelector("li.active a.cptresult_a");
    return active?.dataset?.name || active?.id || "";
  }

  function findNextIncompleteChapter(skipCurrent) {
    const links = getChapterLinks();
    if (!links.length) return null;

    const currentId = getCurrentChapterId();
    let passedCurrent = !currentId || !skipCurrent;

    for (const link of links) {
      const id = link.dataset.name || link.id;
      if (!passedCurrent) {
        if (id === currentId) passedCurrent = true;
        continue;
      }
      if (!chapterDone(link)) return link;
    }

    if (skipCurrent) return null;
    return links.find((link) => !chapterDone(link)) || null;
  }

  function ensureInStudyTab() {
    const inStudyTab = Array.from(document.querySelectorAll(".tab-ul li, .zaixue-course-tit li")).find((li) =>
      /\u5728\u5b66/.test(li.textContent || "")
    );
    if (inStudyTab && !inStudyTab.classList.contains("on") && !inStudyTab.classList.contains("active")) {
      clickEl(inStudyTab.querySelector("a") || inStudyTab);
      return true;
    }
    return false;
  }

  function buildApiBody(payload) {
    const user = getUserData();
    const sessionToken = getCookie("SESSION_TOKEN") || user?.SESSION_TOKEN || "";
    let uuid = getCookie("UUID") || user?.UUID || "";
    if (!uuid) {
      try {
        const headerRaw = getCookie("header_name_lenye");
        if (headerRaw) {
          const h = JSON.parse(headerRaw);
          uuid = h.UUID || uuid;
        }
      } catch (_) {}
    }
    if (!uuid && crypto.randomUUID) uuid = crypto.randomUUID();

    return JSON.stringify({
      header: {
        SESSION_TOKEN: sessionToken,
        CLIENT_OS: "O",
        UUID: uuid,
        REQ_TIME: String(Date.now()),
        SITE_ID: SITE_ID,
      },
      payload,
    });
  }

  function apiPost(path, payload) {
    return new Promise((resolve, reject) => {
      const xhr = new XMLHttpRequest();
      xhr.open("POST", API_BASE + path, true);
      xhr.withCredentials = false;
      xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
      xhr.onload = function () {
        try {
          resolve(JSON.parse(xhr.responseText || "{}"));
        } catch (err) {
          reject(new Error("\u54cd\u5e94\u89e3\u6790\u5931\u8d25"));
        }
      };
      xhr.onerror = function () {
        reject(new Error("\u7f51\u7edc\u8bf7\u6c42\u5931\u8d25"));
      };
      xhr.send(buildApiBody(payload));
    });
  }

  async function fetchHeartbeatSec() {
    try {
      const res = await apiPost("/resource-service/stdCustLearnRecord/getHeartBeatInterval/v1.lyai", {});
      if (res.success === "1" && res.data?.interval) {
        return Number(res.data.interval) || 300;
      }
    } catch (_) {}
    return 300;
  }

  function isCourseUnfinished(c) {
    if (!c) return false;
    if (isFalsyFlag(c.lcsFinished)) return true;
    if (isFalsyFlag(c.lcsStudyFinished)) return true;
    if (isFalsyFlag(c.lcsExameFinished) && (c.courseTestList || []).length) return true;
    const p = parseFloat(c.lcsProcess);
    return !Number.isNaN(p) && p < 100;
  }

  function isCourseFullyFinished(c) {
    if (!c) return false;
    if (isTruthyFlag(c.lcsFinished)) return true;
    const hasExam = (c.courseTestList || []).length > 0;
    if (hasExam) return isStudyFinished(c) && isTruthyFlag(c.lcsExameFinished);
    return isStudyFinished(c);
  }

  function isStudyFinished(course) {
    if (!course) return false;
    if (isTruthyFlag(course.lcsStudyFinished)) return true;
    return parseFloat(course.lcsProcess || 0) >= 100;
  }

  function courseNeedsExam(course) {
    if (!getAutoExam() || !course) return false;
    if (isTruthyFlag(course.lcsExameFinished)) return false;
    const test = (course.courseTestList || [])[0];
    if (!test?.tsId) return false;
    return isStudyFinished(course);
  }

  async function fetchCourseFromPlans(csId) {
    const user = getUserData();
    if (!user?.custId || !csId) return null;
    const plans = await listTeachPlans(user.custId);
    for (const plan of plans) {
      const courses = await listPlanCourses(plan.tpId, user.custId);
      const course = courses.find((c) => c.csId === csId);
      if (course) return { ...course, tpId: plan.tpId, tpName: plan.tpName || plan.tpTitle || "" };
    }
    return null;
  }

  async function listTeachPlans(studentUserId) {
    const res = await apiPost("/trainpronew-service/TPClazzStudentRel/queryStudentTeachPlanPage/v1.lyai", {
      page: 1,
      rows: "50",
      sorts: "singupDate=0",
      studentUserId,
      tpName: "",
      year: "",
    });
    if (res.success !== "1" || !res.data?.length) return [];
    return res.data;
  }

  async function listPlanCourses(tpId, custId) {
    const res = await apiPost("/trainpronew-service/login/cgUserPlanClazzCourse/queryUserPlanCoursePage/v1.lyai", {
      tpId,
      page: 1,
      rows: 999,
      custId,
      sorts: "lcsFinished=1&updateDate=0",
      needTeacherInfo: 0,
    });
    if (res.success !== "1" || !res.data?.length) return [];
    return res.data;
  }

  async function listAllCoursesForPlan(plan) {
    const user = getUserData();
    if (!plan?.tpId || !user?.custId) return [];
    const courses = await listPlanCourses(plan.tpId, user.custId);
    const tpName = plan.tpName || plan.tpTitle || "";
    const planYear = plan.year || "";
    return courses.map((c) => ({ ...c, tpId: plan.tpId, tpName, planYear }));
  }

  async function listAllUnfinishedCourses() {
    const user = getUserData();
    if (!user?.custId) {
      log("\u672a\u8bfb\u53d6\u5230 custId\uff0c\u8bf7\u786e\u8ba4\u5df2\u767b\u5f55");
      return [];
    }

    const plans = await listTeachPlans(user.custId);
    if (!plans.length) {
      log("\u672a\u627e\u5230\u57f9\u8bad\u8ba1\u5212\uff0c\u8bf7\u5148\u5728\u5b66\u4e60\u4e2d\u5fc3\u9009\u8bfe");
      return [];
    }
    const out = [];

    for (const plan of plans) {
      const tpId = plan.tpId;
      if (!tpId) continue;
      const courses = await listPlanCourses(tpId, user.custId);
      for (const course of courses) {
        if (!isCourseUnfinished(course)) continue;
        out.push({ ...course, tpId, tpName: plan.tpName || plan.tpTitle || "" });
      }
    }

    out.sort((a, b) => parseFloat(b.lcsProcess || 0) - parseFloat(a.lcsProcess || 0));
    return out;
  }

  async function findUnfinishedCourse() {
    const list = await listAllUnfinishedCourses();
    if (!list.length) {
      log("\u5df2\u68c0\u67e5\u5168\u90e8\u8ba1\u5212\uff0c\u8bfe\u7a0b\u5747\u663e\u793a\u5df2\u5b8c\u6210");
      return null;
    }
    return list[0];
  }

  async function findNextWorkInQueue(options) {
    const silent = !!(options && options.silent);
    const queue = loadQueue();
    if (!queue.length) {
      if (!silent) log("\u8bf7\u52fe\u9009\u8981\u5b66\u4e60\u7684\u8bfe\u7a0b\u540e\u518d\u70b9\u5f00\u59cb");
      return null;
    }

    const allCourses = await listAllUnfinishedCourses();
    const courseMap = new Map(allCourses.map((c) => [c.csId, c]));

    for (const csId of queue) {
      let course = courseMap.get(csId);
      if (!course) course = await fetchCourseFromPlans(csId);
      if (!course) continue;

      const allVideos = await loadCourseVideos(csId);
      const videos = allVideos.filter(isVideoUnfinished);
      if (videos.length) {
        const done = allVideos.length - videos.length;
        return {
          phase: "study",
          course,
          videos,
          videoTotal: allVideos.length,
          videoDone: done,
        };
      }

      if (courseNeedsExam(course)) {
        const test = course.courseTestList[0];
        return { phase: "exam", course, test };
      }
    }

    return null;
  }

  function collectCorrectAnswers(paper) {
    const answers = [];
    for (const cat of paper.questionCats || []) {
      const itemType = cat.itemType;
      for (const q of cat.questions || []) {
        const correct = (q.options || []).filter((o) => isTruthyFlag(o.answer));
        if (!correct.length) continue;
        let answerIdValue;
        if (itemType === "ms") {
          answerIdValue = correct.map((o) => o.itemId).join(",");
        } else {
          answerIdValue = correct[0].itemId;
        }
        answers.push({
          questionId: q.questionId,
          answerIdValue,
          answerContentValue: "",
        });
      }
    }
    return answers;
  }

  async function submitCourseExam(course, testInfo) {
    const user = getUserData();
    if (!user?.custId) return { ok: false, msg: "\u672a\u767b\u5f55" };
    const tsId = testInfo.tsId;
    const spcId = testInfo.tsSpcId || testInfo.spcId;
    if (!tsId || !spcId) return { ok: false, msg: "\u7f3a\u5c11 tsId/spcId" };

    try {
      const startRes = await zjzxEngineStart("exam", {
        study_user_id: user.custId,
        test: { tsId, tsSpcId: spcId, spcId },
        course: { csId: course.csId, csName: course.csName },
      }, {});
      const loop = await runZjzxExamLoop(startRes, courseDisplayName(course));
      if (loop.ok) {
        return { ok: true, score: loop.score ?? "", msg: loop.msg || "\u4ea4\u5377\u6210\u529f" };
      }
      return { ok: false, msg: loop.msg || "\u4e91\u7aef\u8003\u8bd5\u5931\u8d25" };
    } catch (err) {
      return { ok: false, msg: err.message || String(err) };
    }
  }

  function applyBgProgressEstimate(bg) {
    const total = Number(bg.videoTotal) || 0;
    if (!total) return;
    const completed = Number(bg.videoDone || 0) + Number(bg.videoIndex || 0);
    const est = (completed / total) * 100;
    bg.lcsProcess = Math.max(Number(bg.lcsProcess || 0), est);
  }

  async function afterVideoLearnSuccess(bg, idx, waitSec) {
    bg.videoIndex = idx + 1;
    bg.lastSaveAt = Date.now();
    bg.saveCount = (bg.saveCount || 0) + 1;

    const prog = await fetchCourseProgress(bg.csId);
    if (prog) {
      bg.lcsProcess = prog.lcsProcess;
      bg.csName = prog.csName || bg.csName;
    }
    applyBgProgressEstimate(bg);

    const allVideosDone = bg.videoIndex >= bg.videos.length;
    saveBgState(bg);
    updateCourseProgressInPanel(bg.csId, bg.lcsProcess);
    updatePanel();
    void refreshChapterPreview();

    if (allVideosDone) {
      await finishCourseAndAdvance(bg);
    } else {
      const waitText = isRealtimeStudyMode() ? formatIntervalCn(waitSec) : `${waitSec}\u79d2`;
      log(`\u89c6\u9891${idx + 1}\u5df2\u5b8c\u6210\uff0c\u7b49\u5f85${waitText}\u8fdb\u884c\u4e0b\u4e00\u4e2a\u5b66\u4e60`);
    }
  }

  function stopAutoStudy(reason) {
    if (!state.enabled) return;
    state.enabled = false;
    localStorage.setItem(STORAGE_KEY, "0");
    clearStudyModeSelection();
    syncStartStopButtons();
    syncKeepAlive();
    stopPreviewAutoRefresh();
    log(reason || "\u6240\u6709\u5df2\u9009\u8bfe\u7a0b\u5747\u5df2\u5b8c\u6210\uff0c\u7a0b\u5e8f\u81ea\u52a8\u505c\u6b62");
    updatePanel();
  }

  function buildBgStateFromWork(hit) {
    const { course, phase } = hit;
    const base = {
      csId: course.csId,
      tpId: course.tpId,
      csName: course.csName,
      lcsProcess: parseFloat(course.lcsProcess || 0),
      phase,
      lastSaveAt: 0,
      saveCount: 0,
    };
    if (phase === "study") {
      return {
        ...base,
        videos: hit.videos,
        videoIndex: 0,
        videoTotal: hit.videoTotal ?? hit.videos.length,
        videoDone: hit.videoDone ?? 0,
      };
    }
    return { ...base, videos: [], videoIndex: 0, test: hit.test };
  }

  function isVideoUnfinished(v) {
    if (!v) return false;
    if (v.studyFinished === "1") return false;
    if (Number(v.process) >= 100) return false;
    return true;
  }

  async function loadCourseVideos(csId) {
    const treeRes = await apiPost("/course-service/crsChapter/treeList/v1.lyai", { csId });
    const chapters = flattenChapters(treeRes.data || []);
    const cptIds = chapters.map((c) => c.cptId).filter(Boolean);
    if (!cptIds.length) return [];

    const relRes = await apiPost("/course-service/crsChapterResourceRel/queryListByCptIds/v1.lyai", {
      cptId: cptIds.join(",") + ",",
      csId,
      sorts: "1",
    });
    if (relRes.success !== "1" || !relRes.data?.length) return [];

    return relRes.data
      .map((r) => ({
        resId: r.resId,
        cptId: r.cptId,
        fileTimeLen: Number(r.fileTimeLen) || 0,
        studyTime: Number(r.studyTime) || 0,
        process: Number(r.process) || 0,
        studyFinished: r.studyFinished,
        resName: r.resName || "",
      }))
      .filter((v) => v.resId && v.fileTimeLen > 0);
  }

  async function fetchVideoBreakpoint(csId, resId) {
    const user = getUserData();
    if (!user?.custId || !resId) return 0;

    let bp = 0;
    const progRes = await apiPost("/resource-service/stdCustLearnResource/queryResources/v1.lyai", {
      studyUserId: user.custId,
      resinfo: "1",
      resId,
      needRepeatLearn: "1",
      csId,
    });
    if (progRes.success === "1" && progRes.data?.[0]) {
      const p0 = progRes.data[0];
      bp = Number(p0.studyBreakpoint || p0.endTime || 0);
    }

    const procRes = await apiPost("/resource-service/stdCustLearnProcessRecord/queryPage/v1.lyai", {
      studyUserId: user.custId,
      resId,
      siteId: SITE_ID,
      source: "1",
    });
    if (procRes.success === "1" && procRes.data?.[0]?.endTime != null) {
      bp = Math.max(bp, Number(procRes.data[0].endTime) || 0);
    }

    return Math.max(0, Math.floor(bp));
  }

  async function learnSaveFullVideo(csId, video, mult) {
    const user = getUserData();
    const breakpoint = await fetchVideoBreakpoint(csId, video.resId);
    const realtime = isRealtimeStudyMode();
    const chunkSec = realtime ? await ensurePlatformHeartbeatSec() : 0;
    const cfg = {
      study_mode: realtime ? "realtime" : "efficiency",
      multiplier: realtime ? 1 : mult,
      chunk_sec: realtime ? chunkSec : 0,
      free_video_limit: state.freeVideoLimit,
    };
    const startRes = await zjzxEngineStart(
      "video",
      {
        cs_id: csId,
        study_user_id: user.custId,
        video: {
          resId: video.resId,
          cptId: video.cptId,
          fileTimeLen: video.fileTimeLen,
          resName: video.resName || "",
        },
        multiplier: cfg.multiplier,
        breakpoint,
      },
      cfg
    );
    const loop = await runZjzxEngineLoop(startRes, {
      quiet: !realtime,
      realtime,
      maxSteps: realtime ? 320 : 24,
    });
    if (loop.skipped) return { success: "1", skipped: true };
    if (loop.ok) return { success: "1" };
    throw new Error(loop.msg || "\u4e91\u7aef learnSave \u5931\u8d25");
  }

  async function resolveResourceForCourse(csId, cptIdHint) {
    const user = getUserData();
    let cptId = cptIdHint || "";

    const treeRes = await apiPost("/course-service/crsChapter/treeList/v1.lyai", { csId });
    const chapters = flattenChapters(treeRes.data || []);
    if (!chapters.length) return null;

    if (!cptId) cptId = chapters[0].cptId;

    const relRes = await apiPost("/course-service/crsChapterResourceRel/queryListByCptIds/v1.lyai", {
      cptId,
      csId,
      sorts: "1",
    });
    const relList = relRes.data || [];
    const rel = Array.isArray(relList) ? relList[0] : relList;
    const resId = rel?.resId || rel?.resArr?.resId;
    if (!resId) return null;

    const detailRes = await apiPost("/resource-service/resResource/queryById/v1.lyai", { resId });
    const detail = detailRes.data || {};
    const duration = Number(detail.fileTimeLen || detail.resDuration || detail.playTime || 0);

    let studyBreakpoint = 0;
    const progRes = await apiPost("/resource-service/stdCustLearnResource/queryResources/v1.lyai", {
      studyUserId: user.custId,
      resinfo: "1",
      resId,
      needRepeatLearn: "1",
      csId,
    });
    if (progRes.success === "1" && progRes.data?.[0]) {
      const p0 = progRes.data[0];
      studyBreakpoint = Number(p0.studyBreakpoint || p0.endTime || 0);
    }

    const procRes = await apiPost("/resource-service/stdCustLearnProcessRecord/queryPage/v1.lyai", {
      studyUserId: user.custId,
      resId,
      siteId: SITE_ID,
      source: "1",
    });
    if (procRes.success === "1" && procRes.data?.[0]?.endTime != null) {
      studyBreakpoint = Math.max(studyBreakpoint, Number(procRes.data[0].endTime) || 0);
    }

    return {
      csId,
      cptId,
      resId,
      duration: duration > 0 ? duration : 7200,
      studyBreakpoint,
      csName: detail.resName || "",
    };
  }

  async function initBackgroundTarget() {
    const queue = loadQueue();
    const saved = loadBgState();

    if (queue.length && saved.csId && queue.includes(saved.csId)) {
      if (saved.phase === "exam" && saved.test?.tsId) {
        return { ...saved, lastSaveAt: 0 };
      }
      if (saved.videos?.length) {
        const idx = saved.videoIndex || 0;
        if (idx < saved.videos.length) {
          const allVideos = await loadCourseVideos(saved.csId);
          const pending = allVideos.filter(isVideoUnfinished);
          if (pending.length) {
            let videoIndex = idx;
            const cur = saved.videos[idx];
            if (cur?.resId) {
              const at = pending.findIndex((v) => v.resId === cur.resId);
              if (at >= 0) videoIndex = at;
              else videoIndex = 0;
            }
            const prog = await fetchCourseProgress(saved.csId);
            return {
              ...saved,
              phase: "study",
              videos: pending,
              videoIndex,
              lastSaveAt: 0,
              videoTotal: allVideos.length,
              videoDone: allVideos.length - pending.length,
              lcsProcess: prog?.lcsProcess ?? saved.lcsProcess,
              csName: prog?.csName || saved.csName,
            };
          }
        }
      }
    } else if (saved.csId && queue.length && !queue.includes(saved.csId)) {
      saveBgState({});
    }

    const hit = await findNextWorkInQueue({ silent: true });
    if (!hit) return null;

    const bg = buildBgStateFromWork(hit);
    if (hit.phase === "study") {
      const prog = await fetchCourseProgress(hit.course.csId);
      if (prog) {
        bg.lcsProcess = prog.lcsProcess;
        bg.csName = prog.csName || bg.csName;
      }
    }
    return bg;
  }

  async function finishCourseAndAdvance(bg) {
    const course = (await fetchCourseFromPlans(bg.csId)) || { csId: bg.csId, csName: bg.csName, tpId: bg.tpId };
    if (courseNeedsExam(course)) {
      bg.phase = "exam";
      bg.videos = [];
      bg.videoIndex = 0;
      bg.test = course.courseTestList[0];
      bg.lastSaveAt = 0;
      saveBgState(bg);
      const proc = Number(bg.lcsProcess ?? 0).toFixed(1);
      log(`\u8bfe\u7a0b${courseDisplayName(bg)}\u6240\u6709\u89c6\u9891\u5df2\u5b8c\u6210\u5b66\u4e60\uff0c\u5f53\u524d\u8fdb\u5ea6${proc}%\uff0c\u4e0b\u4e00\u6b65\u8fdb\u5165\u8003\u8bd5\u9636\u6bb5`);
      renderCourseList();
      void refreshChapterPreview();
      return;
    }
    saveBgState({});
    state.coursesDoneSession += 1;
    log(`\u8bfe\u7a0b${courseDisplayName(bg)}\u5df2\u5b8c\u6210\uff08\u65e0\u8003\u8bd5\uff09`);
    void refreshChapterPreview();
    refreshPanelCourses();
  }

  async function fetchCourseProgress(csId) {
    const user = getUserData();
    if (!user?.custId || !csId) return null;
    const res = await apiPost("/course-service/crsCustLearnCourse/queryUserCoursePage/v1.lyai", {
      csId,
      studyUserId: user.custId,
      orderType: "1",
    });
    if (res.success !== "1" || !res.data?.[0]) return null;
    const row = res.data[0];
    return {
      lcsProcess: parseFloat(row.lcsProcess || 0),
      lcsStudyTime: row.lcsStudyTime,
      csName: row.csName,
    };
  }

  function formatBgPanelExtra(bg) {
    if (!bg?.csId) return "";
    const name = (bg.csName || "\u8bfe\u7a0b").slice(0, 12);
    if (bg.phase === "exam") return `\u3010${name} · \u8003\u8bd5\u4e2d\u3011`;
    const idx = (bg.videoIndex || 0) + 1;
    const total = bg.videos?.length || 0;
    const cur = bg.videos?.[bg.videoIndex || 0];
    const proc = bg.lcsProcess != null ? ` · ${bg.lcsProcess}%` : "";
    const vid = cur ? ` · ${cur.fileTimeLen}s` : "";
    return `\u3010${name} \u89c6\u9891${idx}/${total}${vid}${proc}\u3011`;
  }

  function hasActiveBgTask(bg) {
    if (!bg?.csId) return false;
    if (bg.phase === "exam" && bg.test?.tsId) return true;
    return !!(bg.videos && bg.videos.length);
  }

  async function backgroundLearnTick() {
    if (state.bgTickBusy) return;
    state.bgTickBusy = true;
    try {
    if (pageType() === "courseplay") {
      log("\u540e\u53f0\u6a21\u5f0f\uff1a\u8bf7\u5173\u95ed\u64ad\u653e\u9875\uff0c\u907f\u514d\u4e0e\u9875\u9762\u81ea\u5e26\u4e0a\u62a5\u51b2\u7a81");
      return;
    }

    let bg = loadBgState();
    if (!hasActiveBgTask(bg)) {
      bg = await initBackgroundTarget();
      if (!bg) {
        if (state.enabled) {
          stopAutoStudy("\u6240\u6709\u5df2\u9009\u8bfe\u7a0b\u5747\u5df2\u5b8c\u6210\uff0c\u7a0b\u5e8f\u81ea\u52a8\u505c\u6b62");
        }
        return;
      }
      saveBgState(bg);
      renderCourseList();
      const cname = courseDisplayName(bg);
      const proc = Number(bg.lcsProcess || 0).toFixed(1);
      if (bg.phase === "exam") {
        log(`\u8bfe\u7a0b${cname}\u6240\u6709\u89c6\u9891\u5df2\u5b8c\u6210\u5b66\u4e60\uff0c\u5f53\u524d\u8fdb\u5ea6${proc}%\uff0c\u4e0b\u4e00\u6b65\u8fdb\u5165\u8003\u8bd5\u9636\u6bb5`);
      } else {
        const total = bg.videoTotal ?? bg.videos?.length ?? 0;
        const pending = bg.videos?.length ?? 0;
        const done = bg.videoDone ?? Math.max(0, total - pending);
        log(
          `\u5f00\u59cb\u5b66\u4e60\u8bfe\u7a0b${cname} \u8fdb\u5ea6${proc}% \u89c6\u9891\u6570${total} \u5df2\u5b8c\u6210${done}\u4e2a\u89c6\u9891\uff0c\u5f85\u5b66\u4e60${pending}\u4e2a\u89c6\u9891`
        );
      }
    }

    const waitSec = getSaveInterval();
    const elapsed = Date.now() - (bg.lastSaveAt || 0);
    if (bg.lastSaveAt && elapsed < waitSec * 1000) {
      const remain = Math.ceil((waitSec * 1000 - elapsed) / 1000);
      state.lastAction = `\u7b49\u5f85 ${remain}s ${formatBgPanelExtra(bg)}`;
      updatePanel();
      return;
    }

    if (bg.phase === "exam") {
      const course = (await fetchCourseFromPlans(bg.csId)) || {
        csId: bg.csId,
        csName: bg.csName,
        tpId: bg.tpId,
        courseTestList: [bg.test],
      };
      const examRes = await submitCourseExam(course, bg.test);
      bg.lastSaveAt = Date.now();
      if (examRes.ok) {
        saveBgState({});
        state.coursesDoneSession += 1;
        refreshPanelCourses();
      } else {
        saveBgState(bg);
        log(`\u8003\u8bd5\u5931\u8d25\uff1a${examRes.msg}`);
      }
      return;
    }

    const idx = bg.videoIndex || 0;
    const video = bg.videos[idx];
    if (!video) {
      await finishCourseAndAdvance(bg);
      return;
    }

    const mult = getMultiplier();
    const realtime = isRealtimeStudyMode();
    let modeTag = "\uff08\u6548\u7387\uff09";
    if (realtime) {
      const chunkSec = await ensurePlatformHeartbeatSec();
      modeTag = `\uff081:1·\u6bcf${formatIntervalCn(chunkSec)}\u66f4\u65b0\u8fdb\u5ea6\uff09`;
    }
    log(`\u6b63\u5728\u5b66\u4e60\u89c6\u9891${idx + 1}${modeTag}`);
    let res;
    try {
      res = await learnSaveFullVideo(bg.csId, video, mult);
    } catch (err) {
      const em = String(err.message || err);
      log("\u4e91\u7aef\u89c6\u9891\u5f15\u64ce\uff1a" + em);
      if (/free_quota|\u914d\u989d/.test(em)) {
        state.enabled = false;
        localStorage.setItem(STORAGE_KEY, "0");
        clearStudyModeSelection();
        syncStartStopButtons();
        syncKeepAlive();
        updatePanel();
      }
      return;
    }

    if (res.skipped || res.success === "1") {
      await afterVideoLearnSuccess(bg, idx, waitSec);
      return;
    }

    if (String(res.success).includes("drag")) {
      saveBgState({});
      log(`\u4e0a\u62a5\u88ab\u62d2\uff08${video.resName}\uff09\uff0c\u5df2\u91cd\u7f6e`);
      return;
    }

    log("\u4e0a\u62a5\u5931\u8d25\uff1a" + (res.message || res.success) + " · " + (video.resName || ""));
    } finally {
      state.bgTickBusy = false;
    }
  }

  async function openFirstUnfinishedCourseByApi() {
    const course = await findUnfinishedCourse();
    if (!course) return false;

    if (isSameCoursePage(course.csId)) {
      log("\u5df2\u5728\u5f53\u524d\u8bfe\u7a0b\u9875\uff0c\u7b49\u5f85\u64ad\u653e");
      return false;
    }

    const target = courseplayPath(course.csId, course.tpId);
    if (!canNavigate(target)) {
      log("\u521a\u8fdb\u5165\u8bfe\u7a0b\uff0c\u7b49\u5f85\u9875\u9762\u7a33\u5b9a");
      return false;
    }

    log(`\u8fdb\u5165\u8bfe\u7a0b\uff1a${course.csName || course.csId}\uff08${course.lcsProcess || 0}%\uff09`);
    safeNavigate(target);
    return true;
  }

  async function handleTrainPage() {
    dismissDialogs();
    if (ensureInStudyTab()) {
      log("\u5df2\u5207\u6362\u5230\u300c\u5728\u5b66\u8bfe\u7a0b\u300d");
      return;
    }

    const now = Date.now();
    if (now - state.trainApiTriedAt < NAV_COOLDOWN_MS) {
      log("\u5b66\u4e60\u4e2d\u5fc3\u7b49\u5f85\u4e2d\uff0c\u907f\u514d\u91cd\u590d\u6253\u5f00\u8bfe\u7a0b");
      return;
    }
    state.trainApiTriedAt = now;
    await openFirstUnfinishedCourseByApi();
  }

  async function handleCoursePlayPage() {
    dismissDialogs();

    const video = getVideoEl();
    const links = getChapterLinks();
    const activeId = getCurrentChapterId();

    if (!video) {
      if (activeId) {
        if (!state.courseplayWaitSince) state.courseplayWaitSince = Date.now();
        if (Date.now() - state.courseplayWaitSince < VIDEO_WAIT_MS) {
          log("\u7b49\u5f85\u64ad\u653e\u5668\u52a0\u8f7d...");
          return;
        }
        state.courseplayWaitSince = 0;
      }

      const next = findNextIncompleteChapter(true);
      if (next) {
        const chapterId = next.dataset.name || next.id;
        if (!canClickChapter(chapterId)) {
          log("\u7ae0\u8282\u5207\u6362\u51b7\u5374\u4e2d");
          return;
        }
        markChapterClick(chapterId);
        clickEl(next);
        log("\u5df2\u5207\u6362\u7ae0\u8282\uff1a" + (next.title || next.textContent || "").trim());
        state.courseplayWaitSince = Date.now();
        return;
      }

      if (links.length && !links.some((link) => !chapterDone(link))) {
        log("\u5f53\u524d\u8bfe\u7a0b\u7ae0\u8282\u5df2\u5168\u90e8\u5b8c\u6210\uff0c\u8fd4\u56de\u5b66\u4e60\u4e2d\u5fc3");
        safeNavigate("/personcenter?type=train");
      }
      return;
    }

    state.courseplayWaitSince = 0;

    if (video.ended) {
      const next = findNextIncompleteChapter(true);
      if (!next) {
        log("\u5f53\u524d\u8bfe\u7a0b\u5df2\u5168\u90e8\u5b8c\u6210\uff0c\u8fd4\u56de\u5b66\u4e60\u4e2d\u5fc3");
        safeNavigate("/personcenter?type=train");
      }
      return;
    }

    await ensurePlaying();
  }

  async function handleHomePage() {
    if (!isLoggedIn()) {
      log("\u8bf7\u5148\u767b\u5f55");
      return;
    }
    if (location.pathname.includes("personcenter")) return;
    safeNavigate("/personcenter?type=train");
  }

  async function tick() {
    if (!state.enabled) return;
    if (state.bgTickBusy) return;

    const now = Date.now();
    if (now - state.lastTick < TICK_MS) return;
    state.lastTick = now;

    if (!isLoggedIn()) {
      log("\u672a\u767b\u5f55\uff0c\u8bf7\u5148\u767b\u5f55\u8d26\u53f7");
      return;
    }

    if (!(await ensureCloudReady())) {
      state.enabled = false;
      localStorage.setItem(STORAGE_KEY, "0");
      clearStudyModeSelection();
      syncStartStopButtons();
      syncKeepAlive();
      updatePanel();
      return;
    }

    dismissDialogs();

    const mode = getMode();
    const type = pageType();

    try {
      if (mode === "background") {
        await backgroundLearnTick();
        return;
      }

      if (mode === "manual") {
        if (type === "courseplay") {
          dismissDialogs();
          return;
        }
        log("\u624b\u52a8\u6a21\u5f0f\uff1a\u8bf7\u81ea\u884c\u6253\u5f00\u64ad\u653e\u9875\u770b\u8bfe");
        return;
      }

      if (type === "home" || type === "personcenter") {
        await handleHomePage();
      } else if (type === "train") {
        await handleTrainPage();
      } else if (type === "courseplay") {
        await handleCoursePlayPage();
      }
    } catch (err) {
      log("\u8fd0\u884c\u5f02\u5e38\uff1a" + (err.message || err));
    }
  }

  async function fetchPanelCourses() {
    const user = getUserData();
    if (!user?.custId) {
      state.panelCourses = [];
      state.teachPlans = [];
      return [];
    }

    const plans = await listTeachPlans(user.custId);
    state.teachPlans = plans;

    let tpId = loadSelectedTpId();
    if (!tpId || !plans.some((p) => p.tpId === tpId)) {
      tpId = plans[0]?.tpId || "";
      if (tpId) saveSelectedTpId(tpId);
    } else {
      state.selectedTpId = tpId;
    }

    const plan = plans.find((p) => p.tpId === tpId);
    const list = plan ? await listAllCoursesForPlan(plan) : [];

    state.panelCourses = list.map((c) => ({
      csId: c.csId,
      tpId: c.tpId,
      csName: c.csName || c.courseName || "\u672a\u547d\u540d\u8bfe\u7a0b",
      lcsProcess: parseFloat(c.lcsProcess || 0),
      tpName: c.tpName || "",
      planYear: c.planYear || "",
      lcsStudyFinished: c.lcsStudyFinished,
      lcsExameFinished: c.lcsExameFinished,
      lcsFinished: c.lcsFinished,
      courseTestList: c.courseTestList || [],
    }));
    state.panelCourses.sort((a, b) => {
      const au = isCourseUnfinished(a) ? 1 : 0;
      const bu = isCourseUnfinished(b) ? 1 : 0;
      if (au !== bu) return bu - au;
      return b.lcsProcess - a.lcsProcess;
    });

    let q = loadQueue();
    const touched = localStorage.getItem(QUEUE_TOUCHED_KEY) === "1";
    if (!touched && !q.length && state.panelCourses.length) {
      q = state.panelCourses.filter(isCourseUnfinished).map((c) => c.csId);
    }
    saveQueue(q);
    return state.panelCourses;
  }

  async function refreshPanelCourses() {
    if (!isLoggedIn()) return;
    state.panelRefreshing = true;
    updatePanel();
    try {
      await fetchPanelCourses();
      renderPlanSelect();
      renderCourseList();
      await refreshChapterPreview();
    } catch (err) {
      log("\u5237\u65b0\u8bfe\u7a0b\u5931\u8d25\uff1a" + (err.message || err));
    } finally {
      state.panelRefreshing = false;
      updatePanel();
    }
  }

  function updateCourseProgressInPanel(csId, lcsProcess) {
    const c = state.panelCourses.find((x) => x.csId === csId);
    if (c && lcsProcess != null) c.lcsProcess = lcsProcess;
    renderCourseList();
    void refreshChapterPreview();
  }

  function startPreviewAutoRefresh() {
    stopPreviewAutoRefresh();
    state.previewRefreshTimer = setInterval(() => {
      if (!state.enabled) return;
      refreshChapterPreview().catch(() => {});
    }, 12000);
  }

  function stopPreviewAutoRefresh() {
    if (state.previewRefreshTimer) {
      clearInterval(state.previewRefreshTimer);
      state.previewRefreshTimer = null;
    }
  }

  function courseExamLabel(c) {
    if (isCourseFullyFinished(c)) return " · \u5df2\u5b8c\u6210";
    if (!(c.courseTestList || []).length) return "";
    if (isTruthyFlag(c.lcsExameFinished)) return " · \u8003✓";
    if (isStudyFinished(c)) return " · \u5f85\u8003\u8bd5";
    return " · \u542b\u8003\u8bd5";
  }

  function renderPlanSelect() {
    const sel = document.getElementById("zjzx-plan-select");
    if (!sel) return;
    const plans = state.teachPlans || [];
    if (!plans.length) {
      sel.innerHTML = "<option value=\"\">\u6682\u65e0\u57f9\u8bad\u8ba1\u5212</option>";
      sel.disabled = true;
      return;
    }
    sel.disabled = false;
    sel.innerHTML = plans
      .map((p) => {
        const label = p.tpName || (p.year ? `${p.year}\u5e74\u5ea6` : p.tpId);
        const selected = p.tpId === state.selectedTpId ? " selected" : "";
        return `<option value="${escHtml(p.tpId)}"${selected}>${escHtml(label)}</option>`;
      })
      .join("");
  }

  function renderCourseList() {
    const box = document.getElementById("zjzx-course-list");
    if (!box) return;

    const bg = loadBgState();
    const activeCsId = bg.csId || "";
    const selectedSet = new Set(loadQueue());

    if (!state.panelCourses.length) {
      box.innerHTML =
        "<div class='zjzx-empty-state'>\u5f53\u524d\u5e74\u5ea6\u8ba1\u5212\u6682\u65e0\u8bfe\u7a0b<br><span style='font-size:11px;font-weight:700;'>\u53ef\u5207\u6362\u4e0a\u65b9\u57f9\u8bad\u8ba1\u5212\u67e5\u770b\u5176\u4ed6\u5e74\u5ea6</span></div>";
      return;
    }

    box.innerHTML = state.panelCourses
      .map((c) => {
        const pct = Math.min(100, Math.max(0, c.lcsProcess || 0));
        const isActive = c.csId === activeCsId;
        const finished = isCourseFullyFinished(c);
        const checked = selectedSet.has(c.csId) ? "checked" : "";
        const border = isActive ? "#16a34a" : finished ? "#e2e8f0" : "#e2e8f0";
        const bgColor = isActive ? "#f0fdf4" : finished ? "#f1f5f9" : "#f8fafc";
        const titleColor = finished ? "#64748b" : "#0f172a";
        return `
      <label style="display:flex;gap:7px;align-items:flex-start;background:${bgColor};border:1px solid ${border};border-radius:8px;padding:7px;margin-bottom:6px;cursor:pointer;${finished ? "opacity:.92;" : ""}">
        <input type="checkbox" data-csid="${escHtml(c.csId)}" ${checked} style="margin-top:2px;"/>
        <span style="flex:1;min-width:0;">
          <span style="display:block;font-size:12px;color:${titleColor};line-height:1.38;">${escHtml(c.csName)}</span>
          <span style="display:block;font-size:11px;color:#64748b;margin-top:2px;">${escHtml(c.tpName || "\u57f9\u8bad\u8ba1\u5212")} · \u5b66${pct}%${courseExamLabel(c)}</span>
          <span style="display:block;height:4px;background:#e2e8f0;border-radius:2px;margin-top:5px;overflow:hidden;">
            <span style="display:block;height:100%;width:${pct}%;background:${pct >= 100 ? "#16a34a" : "#2563eb"};border-radius:2px;"></span>
          </span>
        </span>
      </label>`;
      })
      .join("");

    box.querySelectorAll("input[type='checkbox']").forEach((el) => {
      el.addEventListener("change", () => {
        const selected = [];
        box.querySelectorAll("label").forEach((label) => {
          const cb = label.querySelector("input[type='checkbox']");
          if (cb?.checked && cb.dataset.csid) selected.push(cb.dataset.csid);
        });
        localStorage.setItem(QUEUE_TOUCHED_KEY, "1");
        saveQueue(selected);
        if (selected.length) clearPanelHint();
        void refreshChapterPreview();
        const bg = loadBgState();
        if (bg.csId && selected.length && !selected.includes(bg.csId)) {
          saveBgState({});
          log("\u5f53\u524d\u8fdb\u884c\u4e2d\u7684\u8bfe\u7a0b\u5df2\u53d6\u6d88\u52fe\u9009\uff0c\u5df2\u91cd\u7f6e\u540e\u53f0\u4efb\u52a1");
        }
      });
    });
  }

  async function resolveQueueCourse(csId) {
    let course = state.panelCourses.find((c) => c.csId === csId);
    if (course) return course;
    try {
      course = await fetchCourseFromPlans(csId);
    } catch (_) {}
    return course || null;
  }

  async function refreshChapterPreview() {
    const selected = loadQueue();
    if (!selected.length) {
      state.chapterPreview = [];
      state.queueVideoTotal = 0;
      state.queueVideoDone = 0;
      state.queueExamTotal = 0;
      state.queueExamDone = 0;
      renderChapterPreview();
      updateQueueSummary();
      return;
    }
    const list = [];
    let examTotal = 0;
    let examDone = 0;
    for (const csId of selected) {
      const course = await resolveQueueCourse(csId);
      if (!course) continue;
      if ((course.courseTestList || []).length) {
        examTotal += 1;
        if (isTruthyFlag(course.lcsExameFinished)) examDone += 1;
      }
      try {
        const videos = await loadCourseVideos(csId);
        list.push({
          csId,
          courseTitle: course.csName || "\u672a\u547d\u540d\u8bfe\u7a0b",
          videos: videos.map((v) => ({
            resId: v.resId,
            title: v.resName || v.resId,
            process: Number(v.process) || 0,
            studyFinished: v.studyFinished,
            active: false,
          })),
        });
      } catch (_) {}
    }
    const bg = loadBgState();
    const activeResId =
      bg.csId && bg.videos?.length ? String(bg.videos[bg.videoIndex || 0]?.resId || "") : "";
    list.forEach((c) => {
      if (c.csId === bg.csId) {
        c.videos.forEach((v) => {
          if (String(v.resId) === activeResId) v.active = true;
        });
      }
    });
    state.chapterPreview = list;
    state.queueVideoTotal = list.reduce((s, c) => s + (c.videos?.length || 0), 0);
    state.queueVideoDone = list.reduce((s, c) => {
      const arr = c.videos || [];
      return s + arr.filter((v) => v.studyFinished === "1" || Number(v.process) >= 100).length;
    }, 0);
    state.queueExamTotal = examTotal;
    state.queueExamDone = examDone;
    renderChapterPreview();
    updateQueueSummary();
  }

  function renderChapterPreview() {
    const box = document.getElementById("zjzx-chapter-preview");
    if (!box) return;
    if (!state.chapterPreview.length) {
      box.innerHTML = "<div class='zjzx-empty-state'>\u8bf7\u9009\u62e9\u8bfe\u7a0b</div>";
      return;
    }
    box.innerHTML = state.chapterPreview
      .map((course) => {
        const items = (course.videos || [])
          .map((v) => {
            const done = v.studyFinished === "1" || Number(v.process) >= 100;
            const color = v.active ? "#16a34a" : done ? "#64748b" : "#334155";
            const mark = v.active ? "▶" : done ? "✓" : "•";
            const pct = Math.round(Number(v.process) || 0);
            return `<div class="zjzx-chapter-item" style="color:${color};"><span><span class="zjzx-dot">${mark}</span> ${escHtml(v.title)}</span><span>${pct}%</span></div>`;
          })
          .join("");
        return `<div class="zjzx-chapter-course"><div class="zjzx-chapter-title">${escHtml(course.courseTitle)}</div><div>${items || "<div class='zjzx-empty-state'>\u65e0\u89c6\u9891</div>"}</div></div>`;
      })
      .join("");
  }

  function updateQueueSummary() {
    const doneEl = document.getElementById("zjzx-queue-done");
    const totalEl = document.getElementById("zjzx-queue-total");
    const pctEl = document.getElementById("zjzx-queue-percent");
    const barEl = document.getElementById("zjzx-queue-progress");
    const examEl = document.getElementById("zjzx-queue-exam");
    const textEl = document.getElementById("zjzx-queue-text");
    const q = loadQueue();
    const total = Math.max(0, Number(state.queueVideoTotal || 0));
    const done = Math.max(0, Math.min(total, Number(state.queueVideoDone || 0)));
    const examTotal = Math.max(0, Number(state.queueExamTotal || 0));
    const examDone = Math.max(0, Math.min(examTotal, Number(state.queueExamDone || 0)));
    if (doneEl) doneEl.textContent = String(done);
    if (totalEl) totalEl.textContent = String(total);
    const pct = total > 0 ? Math.max(0, Math.min(100, Math.round((done / total) * 100))) : 0;
    if (pctEl) pctEl.textContent = `${pct}%`;
    if (barEl) barEl.style.width = `${pct}%`;
    if (examEl) {
      examEl.textContent = examTotal > 0 ? `${examDone} / ${examTotal}` : "—";
    }
    if (textEl) {
      if (!q.length) {
        textEl.textContent = "\u672a\u9009\u62e9";
      } else if (total > 0) {
        const examPart = examTotal > 0 ? ` · \u8003\u8bd5 ${examDone}/${examTotal}` : "";
        textEl.textContent = `\u89c6\u9891\u5df2\u5b66\u4e60 ${done}/${total}${examPart}\uff08\u5df2\u9009 ${q.length} \u95e8\uff09`;
      } else {
        textEl.textContent = `\u5df2\u9009 ${q.length} \u95e8\uff0c\u6b63\u5728\u7edf\u8ba1…`;
      }
    }
  }

  function updateCurrentMetaPanel() {
    const courseEl = document.getElementById("zjzx-current-course");
    const chapterEl = document.getElementById("zjzx-current-chapter");
    const taskEl = document.getElementById("zjzx-current-task");
    const bg = loadBgState();
    if (courseEl) {
      const courseText = bg.csName || "\u65e0";
      courseEl.textContent = courseText;
      courseEl.title = courseText;
    }
    if (chapterEl) {
      let chapterText = "\u65e0";
      if (bg.phase === "exam") chapterText = "\u8003\u8bd5\u4e2d";
      else if (bg.videos?.length) {
        const cur = bg.videos[bg.videoIndex || 0];
        chapterText = cur?.resName || cur?.resId || `\u89c6\u9891 ${(bg.videoIndex || 0) + 1}/${bg.videos.length}`;
      }
      chapterEl.textContent = chapterText;
      chapterEl.title = chapterText;
    }
    if (taskEl) {
      if (!state.enabled) {
        const taskText = state.panelHint || "\u70b9\u5f00\u59cb\u540e\u81ea\u52a8\u63d0\u4ea4";
        taskEl.textContent = taskText;
        taskEl.title = taskText;
      } else if (bg.phase === "exam") {
        taskEl.textContent = "\u6b63\u5728\u4ea4\u5377";
        taskEl.title = "\u6b63\u5728\u4ea4\u5377";
      } else if (bg.csId && bg.videos?.length) {
        const cur = Math.min(
          Number(bg.videoTotal || bg.videos.length),
          Number(bg.videoDone || 0) + Number(bg.videoIndex || 0) + 1
        );
        const total = Number(bg.videoTotal || bg.videos.length);
        const pct = Number(bg.lcsProcess ?? 0).toFixed(1);
        const taskText = `\u89c6\u9891 ${cur}/${total} · \u8bfe\u7a0b ${pct}%`;
        taskEl.textContent = taskText;
        taskEl.title = taskText;
      } else {
        const taskText = state.lastAction || "\u6b63\u5728\u5206\u914d\u4e0b\u4e00\u95e8\u8bfe…";
        taskEl.textContent = taskText;
        taskEl.title = taskText;
      }
    }
  }

  function readPanelCollapsed() {
    const v = localStorage.getItem(PANEL_COLLAPSED_KEY);
    return v == null ? true : v === "1";
  }

  function writePanelCollapsed(collapsed) {
    localStorage.setItem(PANEL_COLLAPSED_KEY, collapsed ? "1" : "0");
  }

  function readPanelPos() {
    try {
      return JSON.parse(localStorage.getItem(PANEL_POS_KEY) || "{}");
    } catch (_) {
      return null;
    }
  }

  function writePanelPos(left, top) {
    localStorage.setItem(PANEL_POS_KEY, JSON.stringify({ left, top }));
  }

  function clampPanelInViewport(panel) {
    if (!panel) return;
    const rect = panel.getBoundingClientRect();
    const maxLeft = Math.max(0, window.innerWidth - panel.offsetWidth);
    const maxTop = Math.max(0, window.innerHeight - panel.offsetHeight);
    const left = Math.max(0, Math.min(maxLeft, rect.left));
    const top = Math.max(0, Math.min(maxTop, rect.top));
    panel.style.right = "auto";
    panel.style.bottom = "auto";
    panel.style.left = `${left}px`;
    panel.style.top = `${top}px`;
    writePanelPos(left, top);
  }

  function applyPanelCollapsed(panel, collapsed) {
    const btnMin = panel.querySelector("#zjzx-btn-min");
    const btnMax = panel.querySelector("#zjzx-btn-max");
    panel.classList.toggle("zjzx-panel-min", !!collapsed);
    panel.classList.toggle("zjzx-panel-max", !collapsed);
    if (btnMin) btnMin.style.display = collapsed ? "none" : "";
    if (btnMax) btnMax.style.display = collapsed ? "" : "none";
    const footerExtra = panel.querySelector(".zjzx-footer-extra");
    if (footerExtra) footerExtra.style.display = collapsed ? "none" : "";
    clampPanelInViewport(panel);
  }

  function enablePanelDrag(panel) {
    const header = panel.querySelector("#zjzx-panel-header");
    if (!header) return;
    let dragging = false;
    let startX = 0;
    let startY = 0;
    let startLeft = 0;
    let startTop = 0;
    header.addEventListener("mousedown", (e) => {
      if (e.target?.closest("#zjzx-panel-controls, .zjzx-panel-ctl")) return;
      dragging = true;
      startX = e.clientX;
      startY = e.clientY;
      const rect = panel.getBoundingClientRect();
      startLeft = rect.left;
      startTop = rect.top;
      panel.style.right = "auto";
      panel.style.bottom = "auto";
      e.preventDefault();
    });
    document.addEventListener("mousemove", (e) => {
      if (!dragging) return;
      const left = Math.max(0, Math.min(window.innerWidth - panel.offsetWidth, startLeft + (e.clientX - startX)));
      const top = Math.max(0, Math.min(window.innerHeight - panel.offsetHeight, startTop + (e.clientY - startY)));
      panel.style.left = `${left}px`;
      panel.style.top = `${top}px`;
    });
    document.addEventListener("mouseup", () => {
      if (!dragging) return;
      dragging = false;
      const rect = panel.getBoundingClientRect();
      writePanelPos(rect.left, rect.top);
    });
  }

  function injectPanelStyles() {
    const id = "zjzx-panel-style-v4";
    document.getElementById("zjzx-panel-style-v2")?.remove();
    document.getElementById("zjzx-panel-style-v3")?.remove();
    if (document.getElementById(id) || !document.head) return;
    const st = document.createElement("style");
    st.id = id;
    st.textContent = `
      #zjzx-auto-panel{position:fixed;right:20px;top:80px;z-index:999999;width:412px;display:flex;flex-direction:column;background:#f4f7fb;border:1px solid #dbe4f0;border-radius:16px;box-shadow:0 16px 40px rgba(15,23,42,.17);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;font-size:12px;color:#0f172a;overflow:hidden;transition:max-height .22s ease,box-shadow .22s ease;}
      #zjzx-auto-panel.zjzx-panel-hidden{display:none !important;}
      #zjzx-auto-panel.zjzx-panel-max{max-height:min(92vh,780px);}
      #zjzx-auto-panel.zjzx-panel-min{max-height:none;box-shadow:0 10px 28px rgba(15,23,42,.14);}
      #zjzx-auto-panel.zjzx-panel-min #zjzx-panel-header{border-bottom:none;}
      #zjzx-auto-panel.zjzx-panel-min #zjzx-panel-body,#zjzx-auto-panel.zjzx-panel-min #zjzx-panel-footer,#zjzx-auto-panel.zjzx-panel-min .zjzx-footer-extra{display:none !important;}
      #zjzx-panel-header{flex:0 0 auto;}
      #zjzx-panel-body{flex:1 1 auto;min-height:0;overflow-y:auto;padding:8px;}
      .zjzx-footer-extra{flex:0 0 auto;}
      #zjzx-panel-footer{flex:0 0 auto;}
      #zjzx-panel-header{padding:8px 11px;background:linear-gradient(180deg,#f8ecd5,#f4e8cf);border-bottom:1px solid #e5dbc6;display:flex;justify-content:space-between;align-items:center;cursor:move;user-select:none;}
      #zjzx-panel-brand{display:flex;align-items:center;gap:9px;min-width:0;flex:1;}
      #zjzx-panel-logo{width:30px;height:30px;border-radius:9px;object-fit:cover;box-shadow:0 2px 9px rgba(15,23,42,.11);border:1px solid rgba(148,163,184,.45);background:#fff;flex:0 0 auto;}
      #zjzx-panel-title{font-size:13px;font-weight:900;color:#9a3412;line-height:1.26;display:flex;align-items:flex-start;gap:5px;flex-wrap:wrap;}
      .zjzx-panel-title-text{flex:1 1 12em;min-width:0;letter-spacing:-0.01em;}
      #zjzx-panel-sub{display:flex;flex-wrap:wrap;align-items:center;gap:3px 5px;margin-top:3px;line-height:1.32;}
      .zjzx-sub-chip{font-size:11px;color:#7c2d12;background:rgba(255,255,255,.62);padding:2px 7px;border-radius:999px;border:1px solid rgba(180,83,9,.18);font-weight:700;}
      .zjzx-sub-chip-em{color:#0f766e;background:rgba(236,253,245,.9);border-color:rgba(15,118,110,.28);}
      .zjzx-sub-dot{color:#d6d3d1;font-size:10px;font-weight:400;}
      .zjzx-panel-ctl .zjzx-ctl-ico{display:block;box-sizing:border-box;margin:0 auto;}
      .zjzx-ctl-min{width:10px;height:2px;background:#64748b;border-radius:1px;}
      .zjzx-ctl-plus{font-size:16px;line-height:1;font-weight:700;color:#64748b;}
      .zjzx-panel-version{font-size:11px;font-weight:900;color:#64748b;padding:2px 7px;border-radius:999px;background:#f1f5f9;border:1px solid #e2e8f0;}
      #zjzx-panel-controls{display:flex;align-items:center;gap:5px;flex:0 0 auto;}
      .zjzx-panel-ctl{border:none;background:#fff;color:#64748b;width:28px;height:28px;border-radius:999px;cursor:pointer;box-shadow:0 1px 2px rgba(15,23,42,.1);font-size:15px;line-height:1;font-weight:900;padding:0;}
      .zjzx-panel-ctl:hover{filter:brightness(1.03);}
      .zjzx-card{background:#fff;border:1px solid #d9e2ee;border-radius:12px;padding:7px 9px;margin-bottom:7px;}
      .zjzx-card-status{padding:6px 8px;margin-bottom:6px;}
      .zjzx-status-row{display:flex;justify-content:space-between;align-items:center;gap:7px;line-height:1.28;}
      .zjzx-status-label{font-size:11px;color:#64748b;font-weight:700;}
      .zjzx-status-badge{padding:2px 7px;border-radius:999px;font-weight:800;font-size:11px;background:#fff;border:1px solid #cbd5e1;color:#334155;}
      .zjzx-status-main{margin-top:3px;}
      .zjzx-status-metrics{display:flex;align-items:center;gap:5px;font-size:12px;color:#475569;min-width:0;flex:1;}
      .zjzx-status-metrics em{font-style:normal;font-weight:900;color:#0f172a;}
      .zjzx-metric-div{color:#cbd5e1;}
      .zjzx-progress-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:3px;font-size:11px;color:#334155;}
      .zjzx-progress-num{font-size:22px;font-weight:900;color:#0f172a;}
      .zjzx-progress-num small{font-size:13px;color:#64748b;}
      .zjzx-card-status .zjzx-progress-pct{font-size:14px;font-weight:900;color:#0369a1;flex:0 0 auto;}
      .zjzx-progress-pct{font-size:20px;font-weight:900;color:#0369a1;}
      .zjzx-card-status .zjzx-progress-bar{height:5px;margin-top:4px;margin-bottom:0;}
      .zjzx-progress-bar{height:9px;border-radius:999px;background:#e2e8f0;overflow:hidden;margin-top:5px;}
      .zjzx-progress-bar>span{display:block;height:100%;width:0;background:linear-gradient(90deg,#22d3ee,#2563eb);transition:width .2s ease;}
      .zjzx-list-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;}
      .zjzx-list-head-actions{display:flex;align-items:center;gap:5px;}
      .zjzx-log-clear-btn{border:1px solid #cbd5e1;background:#fff;color:#64748b;padding:1px 7px;border-radius:999px;font-size:10px;font-weight:700;cursor:pointer;line-height:1.4;}
      .zjzx-log-clear-btn:hover{background:#f8fafc;color:#0f172a;}
      .zjzx-plan-row{padding:0 2px 5px;}
      .zjzx-plan-row .zjzx-plan-select{padding:4px 8px;font-size:11px;line-height:1.25;border-radius:7px;}
      .zjzx-plan-select{width:100%;border:1px solid #cbd5e1;border-radius:8px;padding:6px 9px;font-size:12px;background:#fff;color:#0f172a;}
      .zjzx-list-title{font-size:12px;color:#64748b;font-weight:700;}
      .zjzx-list-tag{font-size:11px;color:#92400e;background:#ffedd5;border:1px solid #fdba74;border-radius:999px;padding:2px 7px;}
      .zjzx-settings-group{background:#f8fafc;border:1px solid #dbe4f0;border-radius:12px;padding:8px;margin-bottom:8px;}
      .zjzx-settings-title{font-size:12px;color:#64748b;font-weight:900;margin-bottom:7px;}
      .zjzx-hidden{display:none !important;}
      .zjzx-btn-row-nowrap{flex-wrap:nowrap;}
      .zjzx-btn-action{min-width:0 !important;flex:1 1 0 !important;}
      .zjzx-btn-ico{font-size:13px;line-height:1;display:inline-flex;align-items:center;margin-right:5px;}
      .zjzx-btn-label{white-space:nowrap;}
      .zjzx-toggle-on{background:linear-gradient(135deg,#1d4ed8,#0ea5e9) !important;border-color:transparent !important;color:#fff !important;}
      .zjzx-card-actions .zjzx-btn-row{margin-bottom:0;}
      .zjzx-study-mode-block{margin-bottom:5px;}
      .zjzx-study-mode-block .zjzx-study-mode-row{display:flex;align-items:center;gap:5px;margin-bottom:0;}
      .zjzx-study-mode-block .zjzx-meta-label{flex:0 0 auto;font-size:10px;white-space:nowrap;line-height:1.2;}
      .zjzx-study-mode-block .zjzx-plan-select{flex:1 1 auto;min-width:0;width:auto;padding:3px 22px 3px 7px;font-size:11px;line-height:1.25;border-radius:7px;}
      .zjzx-study-mode-block .zjzx-study-mode-hint{margin-top:0;}
      .zjzx-card-actions{padding:6px 8px;}
      .zjzx-empty-state{padding:12px 7px;text-align:center;color:#94a3b8;font-size:12px;font-weight:900;}
      #zjzx-course-list,#zjzx-chapter-preview,#zjzx-run-log{max-height:188px;overflow-y:auto;background:#f8fafc;border:1px solid #dbe4f0;border-radius:11px;padding:5px;}
      #zjzx-settings-pane{padding:2px 0;}
      .zjzx-chapter-course{margin-bottom:7px;border:1px solid #dbe4f0;border-radius:9px;background:#fff;}
      .zjzx-chapter-title{padding:6px 9px;background:#eaf1ff;border-bottom:1px solid #dbe4f0;color:#1d4ed8;font-size:12px;font-weight:700;}
      .zjzx-chapter-item{padding:5px 9px;font-size:12px;display:flex;justify-content:space-between;gap:7px;}
      .zjzx-dot{font-weight:700;}
      .zjzx-footer-extra{padding:6px 9px;background:#f8fafc;border-top:1px solid #e2e8f0;opacity:.95;}
      .zjzx-ann{position:relative;font-size:12px;color:#334155;line-height:1.42;background:linear-gradient(180deg,#fffdf5,#fff7e6);border:1px solid #fcd34d;border-radius:11px;padding:8px 9px 8px 11px;margin-bottom:0;}
      .zjzx-ann-title{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:900;color:#9a3412;margin-bottom:3px;}
      .zjzx-ann-text{display:block;word-break:break-word;}
      .zjzx-ann::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,#f59e0b,#ef4444);border-top-left-radius:11px;border-bottom-left-radius:11px;}
      .zjzx-qq-row{display:flex;align-items:center;justify-content:space-between;gap:9px;margin-top:5px;}
      .zjzx-qq-text{font-size:12px;color:#475569;}
      .zjzx-qq-title{font-size:13px;font-weight:800;color:#0f172a;}
      .zjzx-qq-btn{border:none;background:linear-gradient(135deg,#1d4ed8,#0ea5e9);color:#fff;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:800;cursor:pointer;}
      .zjzx-exam-hint{font-size:11px;color:#64748b;margin-top:5px;line-height:1.42;}
      .zjzx-study-mode-hint{margin-top:5px;padding:7px 9px;border-radius:9px;border:1px solid #e2e8f0;font-size:11px;line-height:1.42;}
      .zjzx-study-mode-hint-title{display:block;font-weight:800;margin-bottom:3px;}
      .zjzx-study-mode-hint-body{margin:0;color:#475569;}
      .zjzx-study-mode-hint-efficiency{background:linear-gradient(135deg,#eff6ff,#f0f9ff);border-color:#bfdbfe;color:#1e3a8a;}
      .zjzx-study-mode-hint-efficiency .zjzx-study-mode-hint-body{color:#334155;}
      .zjzx-study-mode-hint-realtime{background:linear-gradient(135deg,#fffbeb,#fef3c7);border-color:#f59e0b;color:#78350f;}
      .zjzx-study-mode-hint-realtime .zjzx-study-mode-hint-body{color:#92400e;}
      .zjzx-start-hint{font-size:11px;color:#b45309;background:#fffbeb;border:1px solid #fcd34d;border-radius:7px;padding:5px 7px;margin-bottom:5px;line-height:1.32;text-align:center;font-weight:600;}
      .zjzx-btn-pro{flex:0 0 auto;background:linear-gradient(135deg,#f59e0b,#ef4444);color:#fff;border:none;box-shadow:0 3px 10px rgba(239,68,68,.22);padding:4px 8px;font-size:12px;border-radius:10px;cursor:pointer;font-weight:800;}
      .zjzx-btn-pro:hover{filter:brightness(1.06);}
      #zjzx-pro-modal{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:1000001;display:none;align-items:center;justify-content:center;padding:20px;}
      .zjzx-pro-card{width:min(560px,92vw);max-height:88vh;overflow:auto;background:#fff;border-radius:18px;border:1px solid #dbe4f0;box-shadow:0 18px 46px rgba(15,23,42,.25);padding:16px;}
      .zjzx-pro-title{font-size:24px;font-weight:900;color:#0f172a;}
      .zjzx-pro-sub{font-size:13px;color:#64748b;margin-top:4px;line-height:1.45;}
      .zjzx-pro-sec{margin-top:12px;border:1px solid #dbe4f0;border-radius:12px;padding:12px;background:#f8fafc;}
      .zjzx-pro-sec h4{margin:0 0 8px;font-size:15px;color:#0f172a;}
      .zjzx-pro-sec p{margin:4px 0;font-size:13px;color:#334155;line-height:1.5;}
      .zjzx-pro-sec ul{margin:6px 0 0 18px;padding:0;}
      .zjzx-pro-sec li{margin:4px 0;font-size:13px;color:#334155;line-height:1.45;}
      .zjzx-pro-buy{display:flex;flex-direction:column;gap:10px;margin-top:8px;}
      .zjzx-pro-muted{color:#64748b;font-size:12px;line-height:1.5;}
      .zjzx-pro-buy-btn{display:inline-block;background:linear-gradient(135deg,#1d4ed8,#0ea5e9);color:#fff;padding:10px 16px;border-radius:12px;font-size:14px;font-weight:800;border:none;cursor:pointer;align-self:flex-start;}
      .zjzx-pro-buy-btn:hover{filter:brightness(1.05);}
      .zjzx-pro-buy-btn:disabled{background:#94a3b8;cursor:not-allowed;box-shadow:none;opacity:.92;}
      .zjzx-pro-buy-btn:disabled:hover{filter:none;}
      .zjzx-pro-tip{margin-top:8px;background:#fef3c7;border:1px solid #fcd34d;border-radius:10px;padding:8px 10px;font-size:13px;color:#92400e;font-weight:700;line-height:1.45;}
      .zjzx-pro-tip-info{background:#eff6ff;border-color:#93c5fd;color:#1d4ed8;font-weight:600;}
      .zjzx-pro-actions{margin-top:14px;display:flex;justify-content:flex-end;}
      .zjzx-pro-close{border:none;background:linear-gradient(135deg,#1d4ed8,#0ea5e9);color:#fff;padding:10px 18px;border-radius:12px;font-size:14px;font-weight:800;cursor:pointer;}
      .zjzx-tabbar{display:flex;gap:6px;margin-bottom:7px;}
      .zjzx-tab-btn{flex:1;border:1px solid #cbd5e1;background:#f8fafc;color:#475569;padding:4px 4px;border-radius:9px;cursor:pointer;font-weight:700;font-size:11px;}
      .zjzx-tab-btn.active{background:linear-gradient(135deg,#1d4ed8,#0ea5e9);color:#fff;border-color:transparent;}
      .zjzx-pane{display:none;}.zjzx-pane.active{display:block;}
      .zjzx-btn-row{display:flex;gap:7px;margin-bottom:6px;flex-wrap:wrap;}
      .zjzx-btn{flex:1;border:none;color:#fff;padding:7px 9px;border-radius:10px;cursor:pointer;font-weight:800;font-size:12px;min-width:68px;}
      .zjzx-btn-start{background:#16a34a;}.zjzx-btn-stop{background:#ef4444;}.zjzx-btn-refresh{background:#64748b;}
      .zjzx-btn-start.zjzx-btn-off,.zjzx-btn-start:disabled{background:#cbd5e1 !important;color:#64748b !important;cursor:not-allowed;box-shadow:none;pointer-events:none;}
      .zjzx-btn-stop.zjzx-btn-off,.zjzx-btn-stop:disabled{background:#e2e8f0 !important;color:#94a3b8 !important;cursor:not-allowed;box-shadow:none;pointer-events:none;}
      .zjzx-btn-ghost{border:1px solid #cbd5e1;background:#fff;color:#0f172a;flex:0 0 auto;}
      .zjzx-meta-row{display:flex;justify-content:space-between;gap:7px;font-size:12px;margin-bottom:5px;}
      .zjzx-meta-label{color:#64748b;}.zjzx-meta-value{font-weight:700;text-align:right;}
      .zjzx-card-current{padding:5px 8px;margin-bottom:6px;}
      .zjzx-card-current .zjzx-meta-row{font-size:11px;margin-bottom:2px;gap:5px;line-height:1.28;align-items:flex-start;}
      .zjzx-card-current .zjzx-meta-row:last-child{margin-bottom:0;}
      .zjzx-card-current .zjzx-meta-label{flex:0 0 auto;font-size:10px;white-space:nowrap;}
      .zjzx-card-current .zjzx-meta-value{flex:1 1 auto;min-width:0;font-size:11px;font-weight:600;text-align:right;word-break:break-all;line-height:1.28;}
      .zjzx-auth-badge{padding:2px 7px;border-radius:999px;border:1px solid #cbd5e1;font-size:11px;font-weight:900;}
      #zjzx-auto-status{padding:3px 9px;border-radius:999px;font-weight:900;font-size:12px;background:#fff;border:1px solid #cbd5e1;}
      .zjzx-card-status #zjzx-auto-status{padding:2px 7px;font-size:11px;}
      #zjzx-panel-footer{padding:7px 11px;background:#eef2f7;border-top:1px solid #dbe4f0;font-size:12px;}
      .zjzx-log-row{padding:4px 6px;border-bottom:1px dashed #d4deea;font-size:12px;line-height:1.42;}
    `;
    document.head.appendChild(st);
  }

  function hideStudyModeHint() {
    const box = document.getElementById("zjzx-study-mode-hint");
    if (box) box.style.display = "none";
  }

  function showStudyModeHintTemporary() {
    const box = document.getElementById("zjzx-study-mode-hint");
    if (!box) return;
    syncStudyModeHintContent();
    box.style.display = "";
    if (state.studyModeHintTimer) clearTimeout(state.studyModeHintTimer);
    state.studyModeHintTimer = setTimeout(() => {
      state.studyModeHintTimer = null;
      hideStudyModeHint();
    }, 5000);
  }

  function syncStudyModeHintContent() {
    const m = getStudyMode();
    if (!m) return;
    const box = document.getElementById("zjzx-study-mode-hint");
    if (!box) return;
    const title = box.querySelector(".zjzx-study-mode-hint-title");
    const body = box.querySelector(".zjzx-study-mode-hint-body");
    const rt = m === "realtime";
    box.classList.toggle("zjzx-study-mode-hint-efficiency", !rt);
    box.classList.toggle("zjzx-study-mode-hint-realtime", rt);
    if (title) title.textContent = rt ? "1:1 \u65f6\u957f\u6162\u5237\u6a21\u5f0f" : "\u6548\u7387\u6a21\u5f0f";
    if (body) {
      const chunk = getRealtimeChunkSec();
      body.textContent = rt
        ? `\u8bfb\u53d6\u5e73\u53f0\u89c4\u5219\uff08\u5f53\u524d ${formatIntervalCn(chunk)}\uff09\uff1a\u6bcf ${formatIntervalCn(chunk)} \u66f4\u65b0\u4e00\u6b21\u8fdb\u5ea6\uff0c\u5faa\u73af\u81f3\u5b66\u5b8c\uff1b\u6bd4\u6548\u7387\u6a21\u5f0f\u66f4\u6162\u3001\u66f4\u5b89\u5168\u3002`
        : "\u5feb\u8bfb\u5b8c\u6210\u89c6\u9891\u8fdb\u5ea6\uff0c\u8bfe\u4e0e\u8bfe\u95f4\u9694\u7ea6 60 \u79d2\uff0c\u901f\u5ea6\u6700\u5feb\u3002";
    }
  }

  function syncStudyModeUi(mode) {
    const sel = document.getElementById("zjzx-study-mode");
    const m = mode !== undefined && mode !== null ? String(mode) : getStudyMode();
    if (sel) sel.value = m || "";
    if (hasStudyModeSelected()) syncStudyModeHintContent();
  }

  function createPanel() {
    const old = document.getElementById("zjzx-auto-panel") || document.getElementById("zjzx-auto-study-panel");
    if (old) old.remove();
    injectPanelStyles();

    const panel = document.createElement("div");
    panel.id = "zjzx-auto-panel";
    panel.innerHTML = `
      <div id="zjzx-panel-header">
        <div id="zjzx-panel-brand">
          <img id="zjzx-panel-logo" alt="logo" referrerpolicy="no-referrer" src="${PANEL_LOGO_URL}"/>
          <div>
            <div id="zjzx-panel-title"><span class="zjzx-panel-title-text">\u5b89\u5fbd\u4e13\u4e1a\u6280\u672f\u4eba\u5458\u7ee7\u7eed\u6559\u80b2\u5728\u7ebf\u5b66\u4e60\u52a9\u624b</span><span class="zjzx-panel-version">v${SCRIPT_VERSION}</span></div>
            <div id="zjzx-panel-sub"><span class="zjzx-sub-chip">\u4e00\u952e\u5b8c\u6210\u89c6\u9891\u5b66\u65f6</span><span class="zjzx-sub-dot">·</span><span class="zjzx-sub-chip">\u5b66\u5b8c\u81ea\u52a8\u8003\u8bd5</span><span class="zjzx-sub-dot">·</span><span class="zjzx-sub-chip zjzx-sub-chip-em">\u7701\u65f6\u7701\u5fc3</span></div>
          </div>
        </div>
        <div id="zjzx-panel-controls">
          <button id="zjzx-btn-min" class="zjzx-panel-ctl" type="button" title="\u6700\u5c0f\u5316" aria-label="\u6700\u5c0f\u5316"><span class="zjzx-ctl-ico zjzx-ctl-min" aria-hidden="true"></span></button>
          <button id="zjzx-btn-max" class="zjzx-panel-ctl" type="button" title="\u5c55\u5f00\u9762\u677f" aria-label="\u5c55\u5f00\u9762\u677f" style="display:none"><span class="zjzx-ctl-plus" aria-hidden="true">+</span></button>
        </div>
      </div>
      <div id="zjzx-panel-body">
        <div class="zjzx-card zjzx-card-status">
          <div class="zjzx-status-row">
            <span class="zjzx-status-label">\u8fd0\u884c\u72b6\u6001</span>
            <span id="zjzx-auto-status">\u5df2\u505c\u6b62</span>
          </div>
          <div class="zjzx-status-row zjzx-status-main">
            <div class="zjzx-status-metrics">
              <span class="zjzx-metric"><em id="zjzx-queue-done">0</em>/<span id="zjzx-queue-total">0</span> \u89c6\u9891\u5df2\u5b66\u4e60</span>
              <span class="zjzx-metric-div">·</span>
              <span class="zjzx-metric">\u8003\u8bd5 <em id="zjzx-queue-exam">—</em></span>
            </div>
            <span class="zjzx-progress-pct" id="zjzx-queue-percent">0%</span>
          </div>
          <div class="zjzx-progress-bar"><span id="zjzx-queue-progress"></span></div>
        </div>
        <div class="zjzx-card">
          <div class="zjzx-tabbar">
            <button class="zjzx-tab-btn active" data-tab="course" type="button">\u8bfe\u7a0b\u5217\u8868</button>
            <button class="zjzx-tab-btn" data-tab="chapter" type="button">\u7ae0\u8282\u9884\u89c8</button>
            <button class="zjzx-tab-btn" data-tab="log" type="button">\u8fd0\u884c\u65e5\u5fd7</button>
            <button class="zjzx-tab-btn" data-tab="settings" type="button">\u8bbe\u7f6e</button>
          </div>
          <div class="zjzx-pane active" data-pane="course">
            <div class="zjzx-list-head"><span class="zjzx-list-title">\u8bfe\u7a0b\u9009\u62e9</span><span class="zjzx-list-tag">\u8bfe\u7a0b\u5217\u8868</span></div>
            <div class="zjzx-plan-row">
              <select id="zjzx-plan-select" class="zjzx-plan-select" title="\u9009\u62e9\u57f9\u8bad\u8ba1\u5212\uff08\u5e74\u5ea6\uff09">
                <option value="">\u52a0\u8f7d\u4e2d…</option>
              </select>
            </div>
            <div id="zjzx-course-list"><div class="zjzx-empty-state">\u767b\u5f55\u540e\u5c06\u81ea\u52a8\u52a0\u8f7d\u8bfe\u7a0b</div></div>
          </div>
          <div class="zjzx-pane" data-pane="chapter">
            <div class="zjzx-list-head"><span class="zjzx-list-title">\u7ae0\u8282\u9884\u89c8</span><span class="zjzx-list-tag">\u5b9e\u65f6\u8fdb\u5ea6</span></div>
            <div id="zjzx-chapter-preview"><div class="zjzx-empty-state">\u8bf7\u9009\u62e9\u8bfe\u7a0b</div></div>
          </div>
          <div class="zjzx-pane" data-pane="log">
            <div class="zjzx-list-head">
              <span class="zjzx-list-title">\u8fd0\u884c\u65e5\u5fd7</span>
              <div class="zjzx-list-head-actions">
                <button id="zjzx-clear-log" class="zjzx-log-clear-btn" type="button" title="\u6e05\u7a7a\u8fd0\u884c\u65e5\u5fd7">\u6e05\u7a7a</button>
                <span class="zjzx-list-tag">\u5b9e\u65f6\u65e5\u5fd7</span>
              </div>
            </div>
            <div id="zjzx-run-log"></div>
          </div>
          <div class="zjzx-pane" data-pane="settings">
            <div class="zjzx-list-head"><span class="zjzx-list-title">\u6388\u6743\u4e0e\u9009\u9879</span><span class="zjzx-list-tag">\u8bbe\u7f6e</span></div>
            <div id="zjzx-settings-pane">
              <div class="zjzx-meta-row"><span class="zjzx-meta-label">\u7528\u6237\u7c7b\u578b</span><span class="zjzx-meta-value zjzx-auth-badge" id="zjzx-cloud-tier">\u672a\u6821\u9a8c</span></div>
              <div class="zjzx-meta-row"><span class="zjzx-meta-label" id="zjzx-cloud-free-label">\u514d\u8d39\u4f53\u9a8c\uff081\u4e2a\u89c6\u9891\uff09</span><span class="zjzx-meta-value" id="zjzx-cloud-free">0/1</span></div>
              <div class="zjzx-meta-row" style="align-items:center;flex-wrap:wrap;gap:6px">
                <span class="zjzx-meta-label">Token</span>
                <input id="zjzx-cloud-token" type="text" placeholder="\u5347\u7ea7Pro\u7c98\u8d34Token\uff08\u53ef\u9009\uff09" style="flex:1;min-width:100px;border:1px solid #cbd5e1;border-radius:8px;padding:4px 7px;font-size:12px"/>
                <button id="zjzx-cloud-save" class="zjzx-btn zjzx-btn-ghost" type="button" style="padding:4px 7px;font-size:12px;flex:0 0 auto">\u4fdd\u5b58\u5e76\u6821\u9a8c</button>
                <button id="zjzx-open-pro" class="zjzx-btn-pro" type="button">\u5347\u7ea7Pro</button>
              </div>
              <div class="zjzx-meta-row zjzx-hidden"><span class="zjzx-meta-label">\u4e91\u7aef\u670d\u52a1</span><span class="zjzx-meta-value" id="zjzx-cloud-base">${DEFAULT_CLOUD_API_BASE}</span></div>
              <div class="zjzx-meta-row zjzx-hidden">
                <span class="zjzx-meta-label">\u8fd0\u884c\u6a21\u5f0f</span>
                <select id="zjzx-mode" disabled style="flex:1;border:1px solid #cbd5e1;border-radius:8px;padding:4px 7px;font-size:12px">
                  <option value="background" selected>\u540e\u53f0\u5b66\u65f6</option>
                </select>
              </div>
              <div class="zjzx-meta-row zjzx-hidden"><span class="zjzx-meta-label">\u4e0a\u62a5\u95f4\u9694</span><input id="zjzx-interval" type="number" value="60" readonly style="width:56px"/> \u79d2</div>
              <div class="zjzx-meta-row zjzx-hidden"><span class="zjzx-meta-label">\u5b66\u65f6\u500d\u7387</span><input id="zjzx-multiplier" type="number" value="2" readonly style="width:56px"/> \u500d</div>
              <div class="zjzx-btn-row zjzx-btn-row-nowrap zjzx-hidden" style="margin-top:4px">
                <button id="zjzx-toggle-exam" class="zjzx-btn zjzx-btn-ghost zjzx-btn-action" type="button"><span class="zjzx-btn-label">\u5b66\u5b8c\u8003\u8bd5</span></button>
              </div>
              <div class="zjzx-exam-hint zjzx-hidden">\u5b66\u5b8c\u540e\u81ea\u52a8\u8003\u8bd5\uff08\u5df2\u9ed8\u8ba4\u5f00\u542f\uff09</div>
            </div>
          </div>
        </div>
        <div class="zjzx-card zjzx-card-current">
          <div class="zjzx-meta-row"><span class="zjzx-meta-label">\u5f53\u524d\u8bfe\u7a0b</span><span class="zjzx-meta-value" id="zjzx-current-course" title="">\u65e0</span></div>
          <div class="zjzx-meta-row"><span class="zjzx-meta-label">\u5f53\u524d\u7ae0\u8282</span><span class="zjzx-meta-value" id="zjzx-current-chapter" title="">\u65e0</span></div>
          <div class="zjzx-meta-row"><span class="zjzx-meta-label">\u5f53\u524d\u4efb\u52a1</span><span class="zjzx-meta-value" id="zjzx-current-task" title="">\u70b9\u5f00\u59cb\u540e\u81ea\u52a8\u63d0\u4ea4</span></div>
        </div>
        <div class="zjzx-card zjzx-card-actions">
          <div class="zjzx-study-mode-block">
            <div class="zjzx-meta-row zjzx-study-mode-row">
              <select id="zjzx-study-mode" class="zjzx-plan-select" title="\u8bf7\u5148\u9009\u62e9\u5b66\u4e60\u6a21\u5f0f\u540e\u518d\u5f00\u59cb">
                <option value="">\u8bf7\u9009\u62e9\u5b66\u4e60\u6a21\u5f0f</option>
                <option value="efficiency">\u6548\u7387\u6a21\u5f0f</option>
                <option value="realtime">1:1 \u65f6\u957f\u6162\u5237\u6a21\u5f0f</option>
              </select>
            </div>
            <div id="zjzx-study-mode-hint" class="zjzx-study-mode-hint zjzx-study-mode-hint-efficiency" style="display:none">
              <span class="zjzx-study-mode-hint-title">\u6548\u7387\u6a21\u5f0f</span>
              <p class="zjzx-study-mode-hint-body">\u5feb\u8bfb\u5b8c\u6210\u5bf9\u5e94\u8bfe\u65f6\uff0c\u8bfe\u4e0e\u8bfe\u95f4\u9694\u7ea6 60 \u79d2\uff0c\u901f\u5ea6\u6700\u5feb\u3002</p>
            </div>
          </div>
          <div id="zjzx-start-hint" class="zjzx-start-hint" style="display:none"></div>
          <div class="zjzx-btn-row zjzx-btn-row-nowrap">
            <button id="zjzx-start" class="zjzx-btn zjzx-btn-start zjzx-btn-action" type="button"><span class="zjzx-btn-ico">▶</span><span class="zjzx-btn-label">\u5f00\u59cb</span></button>
            <button id="zjzx-stop" class="zjzx-btn zjzx-btn-stop zjzx-btn-action zjzx-btn-off" type="button" disabled><span class="zjzx-btn-ico">⏹</span><span class="zjzx-btn-label">\u505c\u6b62</span></button>
          </div>
        </div>
      </div>
      <div class="zjzx-footer-extra">
        <div class="zjzx-ann">
          <span class="zjzx-ann-text" id="zjzx-ann-text">${PANEL_NOTICE_FALLBACK}</span>
        </div>
        <div class="zjzx-qq-row">
          <div>
            <div class="zjzx-qq-text">\u52a0\u5165QQ\u7fa4\uff1a${QQ_GROUP_NUMBER}</div>
            <div class="zjzx-qq-title">\u5b89\u5fbd\u4e13\u6280\u7ee7\u7eed\u6559\u80b2\u52a9\u624b · \u4ea4\u6d41\u7fa4</div>
          </div>
          <button id="zjzx-join-qq" class="zjzx-qq-btn" type="button">\u52a0\u5165</button>
        </div>
      </div>
      <div id="zjzx-panel-footer">\u961f\u5217\u72b6\u6001\uff1a<span id="zjzx-queue-text">\u672a\u9009\u62e9</span></div>
    `;
    document.body.appendChild(panel);
    createProModal();

    const savedPos = readPanelPos();
    if (savedPos && savedPos.left != null && savedPos.top != null) {
      panel.style.right = "auto";
      panel.style.left = `${savedPos.left}px`;
      panel.style.top = `${savedPos.top}px`;
    }
    applyPanelCollapsed(panel, readPanelCollapsed());
    enablePanelDrag(panel);
    const btnMin = document.getElementById("zjzx-btn-min");
    const btnMax = document.getElementById("zjzx-btn-max");
    if (btnMin) {
      btnMin.addEventListener("click", (e) => {
        e.stopPropagation();
        writePanelCollapsed(true);
        applyPanelCollapsed(panel, true);
      });
    }
    if (btnMax) {
      btnMax.addEventListener("click", (e) => {
        e.stopPropagation();
        writePanelCollapsed(false);
        applyPanelCollapsed(panel, false);
      });
    }

    panel.querySelectorAll(".zjzx-tab-btn").forEach((btn) => {
      btn.addEventListener("click", () => switchPanelTab(btn.dataset.tab));
    });

    document.getElementById("zjzx-clear-log")?.addEventListener("click", () => {
      clearRunLog();
    });

    const planSel = document.getElementById("zjzx-plan-select");
    if (planSel) {
      planSel.addEventListener("change", async () => {
        saveSelectedTpId(planSel.value);
        state.panelRefreshing = true;
        updatePanel();
        try {
          await fetchPanelCourses();
          renderPlanSelect();
          renderCourseList();
          await refreshChapterPreview();
        } catch (err) {
          log("\u5207\u6362\u57f9\u8bad\u8ba1\u5212\u5931\u8d25\uff1a" + (err.message || err));
        } finally {
          state.panelRefreshing = false;
          updatePanel();
        }
      });
    }

    document.getElementById("zjzx-start").addEventListener("click", async () => {
      if (state.enabled) return;
      const picked = readStudyModeSelect();
      if (!picked) {
        state.studyMode = "";
        log("\u8bf7\u5148\u9009\u62e9\u5b66\u4e60\u6a21\u5f0f");
        setPanelHint("\u8bf7\u5148\u9009\u62e9\u5b66\u4e60\u6a21\u5f0f\u518d\u70b9\u5f00\u59cb");
        syncStartStopButtons();
        updatePanel();
        return;
      }
      state.studyMode = picked;
      if (!(await ensureCloudReady())) {
        updatePanel();
        return;
      }
      const q = loadQueue();
      if (!q.length) {
        log("\u8bf7\u5148\u52fe\u9009\u81f3\u5c11\u4e00\u95e8\u8bfe\u7a0b");
        setPanelHint("\u8bf7\u5148\u52fe\u9009\u81f3\u5c11\u4e00\u95e8\u8bfe\u7a0b\u518d\u70b9\u5f00\u59cb");
        updatePanel();
        return;
      }
      clearPanelHint();
      const bg = loadBgState();
      if (bg.csId && !q.includes(bg.csId)) saveBgState({});
      state.enabled = true;
      localStorage.setItem(STORAGE_KEY, "1");
      state.lastTick = 0;
      syncStartStopButtons();
      syncKeepAlive();
      if (isRealtimeStudyMode()) await ensurePlatformHeartbeatSec(true);
      log(
        isRealtimeStudyMode()
          ? `\u81ea\u52a8\u770b\u8bfe\u5df2\u5f00\u542f\uff081:1\u65f6\u957f\u6162\u5237\u6a21\u5f0f·\u6bcf${formatIntervalCn(getRealtimeChunkSec())}\u66f4\u65b0\u8fdb\u5ea6\uff09`
          : `\u81ea\u52a8\u770b\u8bfe\u5df2\u5f00\u542f\uff08${studyModeLabel(getStudyMode())}\uff09`
      );
      startPreviewAutoRefresh();
      updatePanel();
      tick();
    });

    document.getElementById("zjzx-stop").addEventListener("click", () => {
      if (!state.enabled) return;
      state.enabled = false;
      localStorage.setItem(STORAGE_KEY, "0");
      clearStudyModeSelection();
      syncStartStopButtons();
      syncKeepAlive();
      stopPreviewAutoRefresh();
      log("\u81ea\u52a8\u770b\u8bfe\u5df2\u6682\u505c");
      updatePanel();
    });

    document.getElementById("zjzx-join-qq").addEventListener("click", () => {
      try {
        GM_openInTab(QQ_GROUP_LINK, { active: true, insert: true, setParent: true });
      } catch (_) {
        window.open(QQ_GROUP_LINK, "_blank");
      }
    });

    document.getElementById("zjzx-open-pro")?.addEventListener("click", () => {
      openProModal();
    });

    document.getElementById("zjzx-cloud-save").addEventListener("click", async () => {
      const input = document.getElementById("zjzx-cloud-token");
      state.cloudToken = String((input && input.value) || "").trim();
      state.cloudRevoked = false;
      localStorage.setItem(CLOUD_TOKEN_KEY, state.cloudToken);
      writeCloudLeaseCache("", 0);
      state.cloudLease = "";
      state.cloudLeaseExp = 0;
      try {
        if (state.cloudToken) await cloudVerifyToken();
        await _el(true);
        log("\u4e91\u7aef\u6388\u6743\u5df2\u66f4\u65b0");
      } catch (err) {
        log("\u4e91\u7aef\u6821\u9a8c\u5931\u8d25\uff1a" + (err.message || err));
      }
      updateCloudPanelUI();
    });

    applyLockedPanelDefaults();
    syncStudyModeUi();
    hideStudyModeHint();
    const studyModeSel = document.getElementById("zjzx-study-mode");
    if (studyModeSel) {
      studyModeSel.addEventListener("change", () => {
        if (state.enabled) {
          log("\u8bf7\u5148\u505c\u6b62\u540e\u518d\u5207\u6362\u5b66\u4e60\u6a21\u5f0f");
          studyModeSel.value = getStudyMode() || "";
          return;
        }
        const picked = String(studyModeSel.value || "");
        if (!picked) {
          clearStudyModeSelection();
          syncStartStopButtons();
          updatePanel();
          return;
        }
        setStudyMode(picked);
        clearPanelHint();
        applyLockedPanelDefaults();
        if (isRealtimeStudyMode()) void ensurePlatformHeartbeatSec(true);
        showStudyModeHintTemporary();
        syncStartStopButtons();
        const chunk = getRealtimeChunkSec();
        log(
          isRealtimeStudyMode()
            ? `\u5df2\u9009\u62e91:1\u65f6\u957f\u6162\u5237\u6a21\u5f0f\uff08\u6bcf${formatIntervalCn(chunk)}\u66f4\u65b0\u8fdb\u5ea6\uff09`
            : `\u5df2\u9009\u62e9${studyModeLabel(getStudyMode())}`
        );
        updatePanel();
      });
    }
    setCloudApiBase();

    state.cloudToken = String(localStorage.getItem(CLOUD_TOKEN_KEY) || "").trim();
    const tokenInput = document.getElementById("zjzx-cloud-token");
    if (tokenInput) tokenInput.value = state.cloudToken;
    updateCloudPanelUI();
    updatePanel();
    renderCourseList();
    updateQueueSummary();
    void fetchClientConfig();
    void fetchPanelNotice();
  }

  function shouldHidePanelOnPage() {
    return pageType() === "courseplay";
  }

  function syncPanelVisibility() {
    const hide = shouldHidePanelOnPage();
    const panel = document.getElementById("zjzx-auto-panel");
    if (panel) panel.classList.toggle("zjzx-panel-hidden", hide);
    if (hide) closeProModal();
  }

  function syncStartStopButtons() {
    const running = !!state.enabled;
    const needMode = !hasStudyModeSelected();
    const startBtn = document.getElementById("zjzx-start");
    const stopBtn = document.getElementById("zjzx-stop");
    if (startBtn) {
      const startOff = running || needMode;
      startBtn.disabled = startOff;
      startBtn.classList.toggle("zjzx-btn-off", startOff);
      startBtn.setAttribute("aria-disabled", startOff ? "true" : "false");
    }
    if (stopBtn) {
      stopBtn.disabled = !running;
      stopBtn.classList.toggle("zjzx-btn-off", !running);
      stopBtn.setAttribute("aria-disabled", !running ? "true" : "false");
    }
  }

  function updatePanel() {
    syncPanelVisibility();
    syncProBuyButtonUi();
    syncStartStopButtons();
    const statusEl = document.getElementById("zjzx-auto-status");
    if (!statusEl) return;
    if (shouldHidePanelOnPage()) return;

    if (state.panelRefreshing) {
      statusEl.textContent = "\u5237\u65b0\u4e2d…";
    } else if (!state.enabled) {
      statusEl.textContent = "\u5df2\u505c\u6b62";
    } else {
      const bg = loadBgState();
      if (bg.phase === "exam") statusEl.textContent = "\u8003\u8bd5\u4e2d";
      else if (bg.csId && bg.videos?.length) {
        statusEl.textContent = `\u8fd0\u884c ${(bg.videoIndex || 0) + 1}/${bg.videos.length}`;
      } else statusEl.textContent = "\u8fd0\u884c\u4e2d";
    }

    updateCloudPanelUI();
    updateCurrentMetaPanel();
    updateQueueSummary();

    const studyModeSel = document.getElementById("zjzx-study-mode");
    if (studyModeSel) studyModeSel.disabled = !!state.enabled;

    const hintEl = document.getElementById("zjzx-start-hint");
    if (hintEl && !state.enabled) {
      if (state.panelHint) {
        hintEl.textContent = state.panelHint;
        hintEl.style.display = "block";
      } else if (!hasStudyModeSelected()) {
        hintEl.textContent = "\u8bf7\u5148\u9009\u62e9\u5b66\u4e60\u6a21\u5f0f\u518d\u70b9\u5f00\u59cb";
        hintEl.style.display = "block";
      } else {
        hintEl.textContent = "";
        hintEl.style.display = "none";
      }
    } else if (hintEl) {
      hintEl.textContent = "";
      hintEl.style.display = "none";
    }
  }

  async function initPanelData() {
    if (!isLoggedIn()) return;
    try {
      await ensurePlatformHeartbeatSec(true);
    } catch (_) {}
    await refreshPanelCourses();
    try {
      await _el(false);
    } catch (_) {}
  }

  function init() {
    resetSessionOnPageLoad();
    createPanel();
    syncPanelVisibility();
    syncKeepAlive();

    initPanelData();

    setInterval(tick, TICK_MS);
    setInterval(updatePanel, 1000);
    setInterval(() => {
      if (isLoggedIn()) _el(false).catch(() => {});
    }, 10 * 60 * 1000);

    window.addEventListener("hashchange", () => {
      state.lastTick = 0;
      syncPanelVisibility();
    });
    window.addEventListener("popstate", () => {
      syncPanelVisibility();
    });
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", init);
  } else {
    init();
  }
})();