// ==UserScript==
// @name         爱国者 · 华医网 AI 助手
// @namespace    https://github.com/jsk789456
// @version      3.3
// @description  【爱国者 · 华医网 AI 助手】进入答题页即由 AI直接读取题目自动作答并提交，无需遮罩；考试通过后自动连播下一个视频/课程。UI 为「主控 / AI 设置 / 工具 / 日志」分页签布局（页签记忆），同屏只显示一组功能，面板高度大幅缩短不遮挡页面。核心能力：hdbl SPA 答题页单选/多选题支持（多选由 AI 一次返回多个字母）、findHdblSubmit 强查找提交/下一题按钮（含 div 按钮与确认弹窗）、遮罩框选扫描优先直读页面文字（免 OCR、不受 CSP 限制）、视频自动静音、OCR 云端双引擎、强制获取、批量选课、面板拖动+位置记忆、首次教程、AI 连接测试、复制诊断日志、一键 DOM 探针。作者：爱国者。反馈交流 QQ 群：https://qm.qq.com/q/HmejDdd0Ec
// @author       爱国者
// @homepage     https://github.com/jsk789456
// @supportURL   https://qm.qq.com/q/HmejDdd0Ec
// @copyright    爱国者
// @match        *://*.91huayi.com/course_ware/course_ware_polyv.aspx?*
// @match        *://*.91huayi.com/course_ware/course_ware_cc.aspx?*
// @match        *://*.91huayi.com/pages/exam.aspx?*
// @match        *://*.91huayi.com/pages/exam_result.aspx?*
// @match        *://*.91huayi.com/cme/index*
// @match        *://*.91huayi.com/cme/*
// @match        *://*.91huayi.com/*
// @grant        GM_xmlhttpRequest
// @connect      *
// @connect      api.siliconflow.cn
// @connect      api.deepseek.com
// @connect      api.groq.com
// @connect      openrouter.ai
// @connect      api.moonshot.cn
// @connect      dashscope.aliyuncs.com
// @require      https://cdnjs.cloudflare.com/ajax/libs/html2canvas/1.4.1/html2canvas.min.js
// @icon         data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2064%2064'%3E%3Cdefs%3E%3ClinearGradient%20id='g'%20x1='0'%20y1='0'%20x2='1'%20y2='1'%3E%3Cstop%20offset='0'%20stop-color='%23FFD88A'/%3E%3Cstop%20offset='1'%20stop-color='%23F2994A'/%3E%3C/linearGradient%3E%3C/defs%3E%3Crect%20width='64'%20height='64'%20rx='14'%20fill='%230b1f4d'/%3E%3Ctext%20x='32'%20y='45'%20font-size='36'%20font-family='Microsoft%20YaHei,sans-serif'%20font-weight='bold'%20text-anchor='middle'%20fill='url(%23g)'%3E%E7%88%B1%3C/text%3E%3C/svg%3E
// @license All Rights Reserved
// ==/UserScript==

(function () {
    'use strict';

    // 仅顶层窗口渲染面板，避免 iframe 内重复创建
    var isTop = (window.self === window.top);

    // ===================== 诊断捕获设施（日志复制 / F12 分析） =====================
    var capLog = [];
    var CAP_MAX = 300;
    function pushCap(level, msg) {
        try {
            capLog.push("[" + new Date().toLocaleTimeString('zh-CN', { hour12: false }) + "][" + level + "] " + msg);
            if (capLog.length > CAP_MAX) capLog.shift();
        } catch (e) {}
    }
    // 捕获浏览器控制台输出（F12 内容）
    ['log', 'info', 'warn', 'error', 'debug'].forEach(function (level) {
        var orig = console[level] ? console[level].bind(console) : function () {};
        console[level] = function () {
            try {
                var s = Array.prototype.map.call(arguments, function (a) {
                    try { return (typeof a === 'object' && a !== null) ? JSON.stringify(a) : String(a); }
                    catch (e) { return String(a); }
                }).join(' ');
                pushCap(level, s);
            } catch (e) {}
            return orig.apply(null, arguments);
        };
    });
    // 捕获页面 JS 错误
    window.addEventListener('error', function (e) {
        pushCap('error', (e.message || '') + ' @ ' + (e.filename || '') + ':' + (e.lineno || ''));
    });
    window.addEventListener('unhandledrejection', function (e) {
        var r = e.reason;
        pushCap('error', 'UnhandledRejection: ' + (r && r.message ? r.message : String(r)));
    });
    // 捕获网络请求
    (function () {
        try {
            var origOpen = XMLHttpRequest.prototype.open;
            XMLHttpRequest.prototype.open = function (m, u) { this.__capM = m; this.__capU = u; return origOpen.apply(this, arguments); };
            var origSend = XMLHttpRequest.prototype.send;
            XMLHttpRequest.prototype.send = function () {
                var self = this;
                this.addEventListener('loadend', function () { pushCap('net', (self.__capM || '?') + ' ' + (self.__capU || '?') + ' -> ' + self.status); });
                return origSend.apply(this, arguments);
            };
        } catch (e) {}
        try {
            if (window.fetch) {
                var of = window.fetch;
                window.fetch = function () {
                    var a = arguments, u = (a[0] && (a[0].url || a[0])) || '';
                    return of.apply(this, a).then(function (r) { pushCap('net', 'fetch ' + u + ' -> ' + (r && r.status)); return r; },
                        function (err) { pushCap('net', 'fetch ERR ' + u); throw err; });
                };
            }
        } catch (e) {}
    })();
    function getDiagReport() {
        var L = [];
        L.push("===== 华医网刷课脚本 诊断报告 =====");
        L.push("时间: " + new Date().toLocaleString('zh-CN'));
        L.push("URL: " + window.location.href);
        L.push("UA: " + navigator.userAgent);
        L.push("脚本版本: V3.3");
        L.push("--- 视频/播放器 ---");
        var v = document.querySelector("video");
        L.push("video 存在: " + (!!v));
        if (v) {
            L.push("  src: " + (v.src ? v.src.slice(0, 90) : 'none'));
            L.push("  playbackRate: " + v.playbackRate + "  paused: " + v.paused);
            L.push("  currentTime: " + (v.currentTime | 0) + "  duration: " + (v.duration ? (v.duration | 0) : '?'));
            L.push("  muted: " + v.muted);
        }
        L.push("player: " + (typeof window.player) + "  polyvPlayer: " + (typeof window.polyvPlayer) + "  cc_js_Player: " + (typeof window.cc_js_Player));
        L.push("--- 脚本状态 ---");
        L.push("AI 智能答题(华医AION): " + (localStorage.getItem("华医AION") !== "0" ? "开" : "关"));
        L.push("AI Key 已配置: " + (!!localStorage.getItem("华医AIKey")));
        try { var all = JSON.parse(localStorage.getItem(keyAllAnswer) || "{}"); L.push("已记录答案课程数: " + Object.keys(all).length); }
        catch (e) { L.push("已记录答案: 解析失败"); }
        try { var wh = JSON.parse(localStorage.getItem(keyWrongHistory) || "{}"); L.push("错题排除记录: " + Object.keys(wh).length + " 题"); }
        catch (e) { L.push("错题排除记录: 解析失败"); }
        L.push("--- 脚本运行日志(debug-box) ---");
        var box = document.getElementById('debug-box');
        L.push(box ? box.value : "(无面板/iframe 内)");
        L.push("--- 捕获的 console / error / network ---");
        L.push(capLog.length ? capLog.join("\n") : "(无)");
        L.push("===== 报告结束 =====");
        return L.join("\n");
    }
    function diagToast(msg) {
        var t = document.getElementById("diag-toast");
        if (!t) {
            t = document.createElement("div");
            t.id = "diag-toast";
            t.style.cssText = "position:fixed;bottom:30px;left:50%;transform:translateX(-50%);z-index:99999999;padding:10px 18px;background:rgba(0,0,0,0.82);color:#fff;border-radius:12px;font-size:13px;font-family:-apple-system,'PingFang SC',sans-serif;transition:opacity .3s;pointer-events:none;";
            (document.body || document.documentElement).appendChild(t);
        }
        t.innerText = msg; t.style.opacity = "1";
        clearTimeout(t.__t); t.__t = setTimeout(function () { t.style.opacity = "0"; }, 2200);
    }
    function copyDiag() {
        var text = getDiagReport();
        var ok = function () { window.debugLog("📋 诊断日志已复制，可粘贴发给「爱国者」分析"); diagToast("✅ 诊断日志已复制"); };
        try {
            if (navigator.clipboard && navigator.clipboard.writeText) {
                navigator.clipboard.writeText(text).then(ok, function () { copyDiagFallback(text, ok); });
            } else { copyDiagFallback(text, ok); }
        } catch (e) { copyDiagFallback(text, ok); }
    }
    function copyDiagFallback(text, cb) {
        try {
            var ta = document.createElement("textarea");
            ta.value = text; ta.style.position = "fixed"; ta.style.top = "-9999px"; ta.style.opacity = "0";
            (document.body || document.documentElement).appendChild(ta); ta.focus(); ta.select();
            var r = document.execCommand("copy");
            (document.body || document.documentElement).removeChild(ta);
            if (r) { window.debugLog("📋 诊断日志已复制(兼容模式)"); diagToast("✅ 诊断日志已复制"); }
            else diagToast("⚠️ 复制失败，请手动选择");
        } catch (e) { diagToast("⚠️ 复制失败"); }
        if (cb) cb();
    }

    // ===================== 调试窗口 =====================
    window.debugLog = function (msg) {
        pushCap('script', msg);
        var box = document.getElementById('debug-box');
        if (!box) { console.log('[华医] ' + msg); return; }
        var time = new Date().toLocaleTimeString('zh-CN', { hour12: false });
        box.value = '[' + time + '] ' + msg + '\n' + box.value;
    };

    // ===================== 样式注入（玻璃拟态 + 深蓝/金橙设计语言） =====================
    function injectStyle() {
        if (document.getElementById("jj-style")) return;
        var s = document.createElement("style");
        s.id = "jj-style";
        s.textContent = [
            "#jj-panel{position:fixed;top:18px;right:18px;z-index:9999999;width:300px;max-width:calc(100vw - 24px);max-height:calc(100vh - 24px);",
            "font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;color:#1d1d1f;",
            "background:rgba(255,255,255,0.66);backdrop-filter:blur(22px) saturate(180%);-webkit-backdrop-filter:blur(22px) saturate(180%);",
            "border:0.5px solid rgba(255,255,255,0.6);border-radius:22px;box-shadow:0 12px 40px rgba(11,31,77,0.18);overflow:hidden;user-select:none;transition:box-shadow .2s;",
            "animation:jjPop .4s cubic-bezier(0.34,1.56,0.64,1);}",
            "#jj-panel.jj-dragging{transition:none!important;box-shadow:0 18px 60px rgba(11,31,77,0.32);}",
            "@keyframes jjPop{from{opacity:0;transform:translateY(-12px) scale(.96)}to{opacity:1;transform:none}}",
            ".jj-collapsed #jj-body{display:none}",
            "#jj-panel .jj-head{display:flex;align-items:center;gap:10px;padding:13px 15px;background:linear-gradient(135deg,#0b1f4d,#163a8a);color:#fff;cursor:move;}",
            ".jj-brand{width:34px;height:34px;border-radius:10px;flex:0 0 auto;background:linear-gradient(135deg,#0b1f4d,#123a8a);",
            "border:1px solid rgba(255,179,71,0.5);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;color:#ffb347;box-shadow:0 2px 8px rgba(0,0,0,0.3);}",
            ".jj-headtext{margin-right:auto;line-height:1.2;}",
            ".jj-title{font-size:15px;font-weight:700;letter-spacing:-0.3px;}",
            ".jj-sub{font-size:10px;opacity:.72;margin-top:2px;}",
            ".jj-ico{width:24px;height:24px;border-radius:7px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-size:13px;cursor:pointer;background:rgba(255,255,255,0.14);transition:all .15s;}",
            ".jj-ico:hover{background:rgba(255,255,255,0.28);transform:scale(1.06);}",
            "#jj-body{padding:12px 14px 14px;max-height:calc(100vh - 78px);overflow-y:auto;overscroll-behavior:contain;}",
            ".jj-status{display:flex;align-items:center;gap:8px;background:rgba(11,31,77,0.05);border-radius:11px;padding:8px 11px;font-size:12px;font-weight:500;margin-bottom:10px;}",
            "#tixing{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}",
            ".jj-dot{width:8px;height:8px;border-radius:50%;background:#34c759;box-shadow:0 0 0 3px rgba(52,199,89,.18);flex:0 0 auto;animation:jjPulse 2s infinite;}",
            "@keyframes jjPulse{0%,100%{opacity:1}50%{opacity:.4}}",
            ".jj-tabs{display:flex;gap:4px;background:rgba(11,31,77,0.06);border-radius:11px;padding:3px;margin-bottom:10px;}",
            ".jj-tab{flex:1;text-align:center;padding:7px 0;border-radius:9px;font-size:12px;font-weight:600;color:#51515a;cursor:pointer;transition:all .18s;user-select:none;}",
            ".jj-tab:hover{color:#0b1f4d;}",
            ".jj-tab.active{background:#fff;color:#0b1f4d;box-shadow:0 2px 8px rgba(11,31,77,.14);}",
            ".jj-pane.jj-hidden{display:none;}",
            ".jj-section{margin-bottom:10px;}",
            ".jj-card{background:rgba(255,255,255,0.58);border:1px solid rgba(255,255,255,0.75);border-radius:14px;padding:11px 12px;margin-bottom:10px;box-shadow:0 4px 14px rgba(11,31,77,0.09);}",
            ".jj-card.jj-hidden{display:none;}",
            ".jj-card-title{font-size:12.5px;font-weight:700;color:#0b1f4d;display:flex;align-items:center;gap:6px;margin-bottom:9px;}",
            ".jj-card-title.jj-foldable{cursor:pointer;user-select:none;}",
            ".jj-card-title.jj-foldable:hover{opacity:.78;}",
            ".jj-arrow{margin-left:auto;font-size:10px;opacity:.55;transition:transform .18s;}",
            ".jj-card.jj-folded .jj-card-body{display:none;}",
            ".jj-card.jj-folded .jj-card-title{margin-bottom:0;}",
            ".jj-footlinks{display:flex;gap:12px;justify-content:center;margin-top:10px;padding-top:9px;border-top:1px solid rgba(11,31,77,.08);}",
            ".jj-fl{font-size:11px;color:#86868b;cursor:pointer;text-decoration:none;}",
            ".jj-fl:hover{color:#0b1f4d;}",
            ".jj-card .jj-section{margin-bottom:0;}",
            ".jj-card .jj-ai-cfg{margin-top:9px;}",
            ".jj-card .jj-note{margin-bottom:0;}",
            ".jj-row{display:flex;align-items:center;justify-content:space-between;}",
            ".jj-label{font-size:11px;font-weight:700;color:#86868b;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;}",
            ".jj-row .jj-label{margin-bottom:0;}",
            ".jj-seg{display:flex;background:rgba(11,31,77,0.06);border-radius:12px;padding:4px;gap:4px;}",
            ".jj-seg button{flex:1;border:none;background:transparent;padding:9px 0;border-radius:9px;font-size:13px;font-weight:600;color:#1d1d1f;cursor:pointer;transition:all .2s;font-family:inherit;}",
            ".jj-seg button.active{background:#fff;color:#0b1f4d;box-shadow:0 2px 8px rgba(11,31,77,.12);}",
            ".jj-switch{width:48px;height:28px;border-radius:999px;background:rgba(120,120,128,.22);position:relative;cursor:pointer;transition:all .25s;flex:0 0 auto;}",
            ".jj-switch.on{background:linear-gradient(135deg,#34c759,#28a745);}",
            ".jj-knob{position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:0 2px 5px rgba(0,0,0,.2);transition:all .25s cubic-bezier(0.34,1.56,0.64,1);}",
            ".jj-switch.on .jj-knob{left:23px;}",
            ".jj-note{font-size:12px;line-height:1.6;color:#51515a;background:rgba(255,138,0,0.08);border-left:3px solid #ff8a00;border-radius:10px;padding:10px 12px;margin-bottom:14px;}",
            ".jj-note b{color:#ff8a00;}",
            "#debug-box{width:100%;height:120px;background:rgba(11,31,77,0.05);border:none;border-radius:12px;padding:10px;box-sizing:border-box;resize:none;outline:none;font-family:'SF Mono',Menlo,monospace;font-size:11px;line-height:1.5;color:#1d1d1f;}",
            ".jj-btns{margin-top:4px;}",
            ".jj-btn{border:none;border-radius:12px;padding:12px;font-size:13px;font-weight:600;cursor:pointer;transition:all .15s;font-family:inherit;text-align:center;display:block;text-decoration:none;}",
            ".jj-btn:active{transform:scale(.97);}",
            ".jj-btn-soft{background:rgba(11,31,77,0.06);color:#1d1d1f;margin-top:4px;}",
            ".jj-btn-soft:hover{background:rgba(11,31,77,0.1);}",
            ".jj-btn-force{background:linear-gradient(135deg,#ff5a5f,#ff8a00);color:#fff;margin-top:4px;box-shadow:0 6px 16px rgba(255,90,95,.3);}",
            ".jj-btn-force:hover{filter:brightness(1.05);transform:translateY(-1px);}",
            ".jj-footer{display:flex;gap:8px;margin-top:12px;}",
            ".jj-btn-gold{flex:1;background:linear-gradient(135deg,#ff8a00,#ffb347);color:#fff;box-shadow:0 6px 16px rgba(255,138,0,.32);}",
            ".jj-btn-gold:hover{filter:brightness(1.05);transform:translateY(-1px);}",
            ".jj-btn-line{flex:1;background:rgba(11,31,77,0.06);color:#0b1f4d;}",
            ".jj-btn-line:hover{background:rgba(11,31,77,0.12);}",
            ".jj-help{margin-top:10px;text-align:center;font-size:12px;color:#86868b;cursor:pointer;}",
            ".jj-help:hover{color:#0b1f4d;}",
            "#jj-mask{position:fixed;inset:0;z-index:10000000;background:rgba(11,31,77,0.5);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:20px;animation:jjFade .25s ease;}",
            "@keyframes jjFade{from{opacity:0}to{opacity:1}}",
            ".jj-modal{width:380px;max-width:100%;max-height:90vh;overflow:auto;background:rgba(255,255,255,0.92);backdrop-filter:blur(30px) saturate(180%);-webkit-backdrop-filter:blur(30px) saturate(180%);",
            "border:0.5px solid rgba(255,255,255,0.7);border-radius:22px;box-shadow:0 24px 70px rgba(11,31,77,0.4);color:#1d1d1f;font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;animation:jjPop .35s cubic-bezier(0.34,1.56,0.64,1);}",
            ".jj-modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;background:linear-gradient(135deg,#0b1f4d,#163a8a);color:#fff;border-radius:22px 22px 0 0;}",
            ".jj-modal-title{font-size:17px;font-weight:700;}",
            ".jj-modal-close{width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;background:rgba(255,255,255,0.15);font-size:13px;}",
            ".jj-modal-close:hover{background:rgba(255,255,255,0.3);}",
            ".jj-modal-body{padding:20px;}",
            ".jj-step{display:flex;gap:12px;margin-bottom:16px;}",
            ".jj-num{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:linear-gradient(135deg,#ff8a00,#ffb347);color:#fff;font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center;box-shadow:0 3px 8px rgba(255,138,0,.3);}",
            ".jj-step b{font-size:14px;color:#0b1f4d;}",
            ".jj-step p{font-size:13px;color:#51515a;margin:3px 0 0;line-height:1.5;}",
            ".jj-reward-copy{font-size:14px;line-height:1.7;color:#1d1d1f;text-align:center;margin:0 0 18px;}",
            ".jj-qr{display:flex;gap:14px;justify-content:center;}",
            ".jj-qr-item{flex:1;text-align:center;}",
            ".jj-qr-img{width:100%;aspect-ratio:1/1;background:rgba(11,31,77,0.05);border-radius:14px;overflow:hidden;display:flex;align-items:center;justify-content:center;}",
            ".jj-qr-img img{width:100%;height:100%;object-fit:cover;}",
            ".jj-qr-fallback{display:none;font-size:12px;color:#86868b;padding:10px;}",
            ".jj-qr-cap{margin-top:8px;font-size:13px;font-weight:600;color:#0b1f4d;}",
            ".jj-qq-line{display:block;margin-top:18px;text-align:center;padding:12px;background:linear-gradient(135deg,#0b1f4d,#163a8a);color:#fff;text-decoration:none;border-radius:12px;font-size:13px;font-weight:600;transition:all .15s;}",
            ".jj-qq-line:hover{transform:translateY(-1px);filter:brightness(1.1);}",
            ".jj-modal-foot{padding:0 20px 20px;}",
            ".jj-batch{margin-bottom:14px;}",
            ".jj-batch .jj-label{display:flex;justify-content:space-between;align-items:center;}",
            ".jj-disc-wrap{max-height:170px;overflow:auto;background:rgba(11,31,77,0.04);border-radius:12px;padding:6px 4px;margin-bottom:10px;}",
            ".jj-disc{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:8px;cursor:pointer;font-size:13px;color:#1d1d1f;}",
            ".jj-disc:hover{background:rgba(11,31,77,0.06);}",
            ".jj-disc input{accent-color:#ff8a00;width:15px;height:15px;flex:0 0 auto;cursor:pointer;}",
            ".jj-queue{max-height:130px;overflow:auto;background:rgba(11,31,77,0.04);border-radius:12px;padding:6px 4px;margin:8px 0;font-size:12px;}",
            ".jj-queue-empty{padding:6px;color:#86868b;}",
            ".jj-queue-item{display:flex;gap:6px;padding:5px 7px;border-radius:7px;line-height:1.4;color:#1d1d1f;}",
            ".jj-queue-item.done{color:#34c759;}",
            ".jj-queue-item.cur{background:rgba(255,138,0,0.12);font-weight:600;}",
            ".jj-queue-item .qidx{color:#86868b;flex:0 0 auto;}",
            ".jj-batch-btns{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px;}",
            ".jj-batch-btns .jj-btn{flex:1;min-width:84px;padding:10px;}",
            ".jj-input{width:100%;box-sizing:border-box;margin:6px 0;padding:8px 10px;border:1px solid rgba(11,31,77,0.18);border-radius:10px;font-size:12px;font-family:inherit;color:#1d1d1f;background:rgba(255,255,255,0.7);outline:none;}",
            ".jj-input:focus{border-color:#ff8a00;box-shadow:0 0 0 3px rgba(255,138,0,0.15);}",
            ".jj-ai-cfg{background:rgba(11,31,77,0.04);border-radius:12px;padding:10px 12px;margin-bottom:12px;}",
            ".jj-hint{font-size:11px;line-height:1.5;color:#86868b;margin-top:6px;}",
            ".jj-hint b{color:#ff8a00;}",
            "#jj-ai.on{background:linear-gradient(135deg,#ff8a00,#ffb347);}",
            ".jj-hidden{display:none!important;}"
        ].join("\n");
        (document.head || document.documentElement).appendChild(s);
    }

    // ===================== 使用教程（仅首次自动弹出） =====================
    function openTutorial(force) {
        if (!force) { try { if (localStorage.getItem("华医TutorialDone") === "1") return; } catch (e) {} }
        var html =
            '<div class="jj-modal-head"><div class="jj-modal-title">🎓 使用教程</div><div class="jj-modal-close">✕</div></div>' +
            '<div class="jj-modal-body">' +
            '<div class="jj-step"><span class="jj-num">1</span><div><b>自动刷课</b><p>打开课程视频即可自动静音播放，无需任何手动操作。</p></div></div>' +
            '<div class="jj-step"><span class="jj-num">2</span><div><b>AI 智能答题（直答）</b><p>已默认开启并预填 Key，答题页会<b>直接用 AI 扫描题目、选择正确答案并自动提交</b>；AI 未配置时回落已记录答案/排除错项兜底，仍错则自动重考直到通过。</p></div></div>' +
            '<div class="jj-step"><span class="jj-num">3</span><div><b>循环答题直到通过</b><p>若考试未通过，会自动重新作答、更换答案，<b>直到考试通过为止</b>，无需手动干预。</p></div></div>' +
            '<div class="jj-step"><span class="jj-num">4</span><div><b>强制获取</b><p>若答题页 AI 未自动作答，点面板「🔓 强制获取/作答」或在 F12 控制台输入 <b>forceGetAnswers()</b> 立即扫描题目、填答并提交，并导出每题明细。</p></div></div>' +
            '<div class="jj-step"><span class="jj-num">5</span><div><b>诊断日志</b><p>遇到异常点「复制诊断日志」发给开发者快速定位。</p></div></div>' +
            '<div class="jj-step"><span class="jj-num">6</span><div><b>打赏支持</b><p>用得顺手？欢迎打赏，让脚本持续更新得更好。</p></div></div>' +
            '<div class="jj-step"><span class="jj-num">7</span><div><b>📷 遮罩扫描图片题</b><p>遇到题干/选项是图片、AI 读不到文字的题：点面板「📷 遮罩框选扫描题目」，在页面上<b>拖拽框选该题区域</b>，脚本自动截图 → OCR → AI 选答案 → 在页面勾选对应选项（自动按框选位置定位题号）。填 OCR.space 免费 Key 更准，未填自动用本地 Tesseract 兜底；也可选图/粘贴截图作补充。</p></div></div>' +
            '</div>' +
            '<div class="jj-modal-foot"><div class="jj-btn jj-btn-gold jj-modal-ok">开始使用 🚀</div></div>';
        var mask = document.createElement("div");
        mask.id = "jj-mask";
        mask.innerHTML = '<div class="jj-modal">' + html + '</div>';
        document.body.appendChild(mask);
        mask.addEventListener("click", function (e) { if (e.target === mask) closeTut(); });
        function closeTut() { try { localStorage.setItem("华医TutorialDone", "1"); } catch (e) {} mask.remove(); }
        mask.querySelector(".jj-modal-close").onclick = closeTut;
        mask.querySelector(".jj-modal-ok").onclick = closeTut;
    }

    // ===================== 打赏弹窗 =====================
    function openReward() {
        var zfb = "https://a1.boltp.com/2026/08/31/6a950ca30913e.jpg";
        var wx = "https://a1.boltp.com/2026/08/31/6a950ca33c5d1.png";
        var qq = "https://qm.qq.com/q/HmejDdd0Ec";
        var qrImg = function (src, cap) {
            return '<div class="jj-qr-item">' +
                '<div class="jj-qr-img"><img src="' + src + '" alt="' + cap + '" onerror="this.style.display=\'none\';this.parentNode.querySelector(\'.jj-qr-fallback\').style.display=\'block\';">' +
                '<span class="jj-qr-fallback">' + cap + '二维码<br>(图片加载失败)</span></div>' +
                '<div class="jj-qr-cap">' + cap + '</div></div>';
        };
        var html =
            '<div class="jj-modal-head"><div class="jj-modal-title">❤ 打赏支持</div><div class="jj-modal-close">✕</div></div>' +
            '<div class="jj-modal-body">' +
            '<p class="jj-reward-copy">如果这款脚本帮您省下了宝贵的时间，<br>欢迎请开发者喝杯咖啡 ☕<br><span style="color:#86868b;font-size:12px;">您的每一份支持，都是我持续维护、更新功能的动力！</span></p>' +
            '<div class="jj-qr">' + qrImg(zfb, "支付宝") + qrImg(wx, "微信") + '</div>' +
            '<a class="jj-qq-line" href="' + qq + '" target="_blank" rel="noopener">💬 使用遇到问题？点击加入 QQ 群反馈</a>' +
            '</div>' +
            '<div class="jj-modal-foot"><div class="jj-btn jj-btn-gold jj-modal-ok">已打赏 / 稍后再说</div></div>';
        var mask = document.createElement("div");
        mask.id = "jj-mask";
        mask.innerHTML = '<div class="jj-modal">' + html + '</div>';
        document.body.appendChild(mask);
        mask.addEventListener("click", function (e) { if (e.target === mask) mask.remove(); });
        mask.querySelector(".jj-modal-close").onclick = function () { mask.remove(); };
        mask.querySelector(".jj-modal-ok").onclick = function () { mask.remove(); };
    }

    function createDebugWindow() {
        if (!isTop) return;
        if (document.getElementById('jj-panel')) return;
        if (!document.body) { document.addEventListener('DOMContentLoaded', createDebugWindow); return; }
        injectStyle();
        var panel = document.createElement('div');
        panel.id = 'jj-panel';
        panel.innerHTML =
            '<div class="jj-head">' +
            '  <div class="jj-brand">华</div>' +
            '  <div class="jj-headtext"><div class="jj-title">爱国者 · 华医网助手</div><div class="jj-sub">v3.3 · AI 直答</div></div>' +
            '  <div id="jj-help" class="jj-ico" title="使用教程">?</div>' +
            '  <div id="jj-min" class="jj-ico" title="收起/展开">—</div>' +
            '  <div id="jj-close" class="jj-ico" title="关闭">✕</div>' +
            '</div>' +
            '<div id="jj-body">' +
            '  <div class="jj-status"><span class="jj-dot"></span><span id="tixing">加载中...</span></div>' +
            '  <div class="jj-tabs">' +
            '    <div class="jj-tab active" data-pane="main">主控</div>' +
            '    <div class="jj-tab" data-pane="ai">AI 设置</div>' +
            '    <div class="jj-tab" data-pane="tool">工具</div>' +
            '    <div class="jj-tab" data-pane="log">日志</div>' +
            '  </div>' +
            '  <div class="jj-pane" id="jj-pane-main">' +
            '    <div class="jj-card">' +
            '      <div class="jj-card-title">🤖 AI 智能答题</div>' +
            '      <div class="jj-row"><div class="jj-label">自动读题 · AI 作答 · 提交</div><div id="jj-ai" class="jj-switch"><span class="jj-knob"></span></div></div>' +
            '      <div class="jj-hint">进入答题页自动读题交 AI 选答案并提交，未通过自动重考；接口配置见「AI 设置」。</div>' +
            '    </div>' +
            '    <div class="jj-card">' +
            '      <div class="jj-card-title">🎬 视频控制</div>' +
            '      <div class="jj-row"><div class="jj-label">🔊 自动静音</div><div id="jj-mute" class="jj-switch"><span class="jj-knob"></span></div></div>' +
            '    </div>' +
            '    <div class="jj-card jj-batch jj-hidden" id="jj-batch">' +
            '      <div class="jj-card-title">📚 批量学习</div>' +
            '      <div class="jj-label" style="display:flex;justify-content:space-between;align-items:center;margin-bottom:6px">按学科选课<span id="jj-batch-refresh" title="刷新学科与队列" style="cursor:pointer">↻ 刷新</span></div>' +
            '      <div id="jj-disc-wrap" class="jj-disc-wrap"></div>' +
            '      <div class="jj-batch-btns">' +
            '        <div id="jj-grab" class="jj-btn jj-btn-soft">抓取本页项目</div>' +
            '        <div id="jj-grab-disc" class="jj-btn jj-btn-soft">按勾选学科抓取</div>' +
            '      </div>' +
            '      <div id="jj-queue" class="jj-queue"></div>' +
            '      <div class="jj-batch-btns">' +
            '        <div id="jj-batch-start" class="jj-btn jj-btn-gold">▶ 开始学习</div>' +
            '        <div id="jj-batch-next" class="jj-btn jj-btn-line">下一项目 ⏭</div>' +
            '      </div>' +
            '      <div class="jj-batch-btns">' +
            '        <div id="jj-batch-stop" class="jj-btn jj-btn-soft">⏹ 暂停</div>' +
            '        <div id="jj-batch-clear" class="jj-btn jj-btn-soft">清空队列</div>' +
            '      </div>' +
            '    </div>' +
            '    <div class="jj-btns"><div id="jj-force" class="jj-btn jj-btn-force">🔓 强制获取/作答</div></div>' +
            '  </div>' +
            '  <div class="jj-pane jj-hidden" id="jj-pane-ai">' +
            '    <div class="jj-card">' +
            '      <div class="jj-card-title">🔑 AI 接口配置</div>' +
            '      <div id="jj-ai-cfg" class="jj-ai-cfg">' +
            '        <input id="jj-ai-key" class="jj-input" type="password" placeholder="API Key" autocomplete="off">' +
            '        <input id="jj-ai-base" class="jj-input" placeholder="API Base URL" value="https://open.bigmodel.cn/api/paas/v4">' +
            '        <select id="jj-ai-model" class="jj-input">' +
            '          <option value="deepseek-chat">DeepSeek 官方 · deepseek-chat（国内直连，推荐）</option>' +
            '          <option value="qwen-plus">阿里云百炼 · qwen-plus（国内直连）</option>' +
            '          <option value="qwen-turbo">阿里云百炼 · qwen-turbo（国内直连，更省）</option>' +
            '          <option value="glm-4-flash">智谱 GLM · glm-4-flash（国内直连，免费）</option>' +
            '          <option value="Qwen/Qwen2.5-7B-Instruct">SiliconFlow · Qwen2.5-7B（需充值）</option>' +
            '          <option value="deepseek-ai/DeepSeek-V3">SiliconFlow · DeepSeek-V3（需充值）</option>' +
            '          <option value="llama-3.3-70b-versatile">Groq · Llama-3.3-70B（⚠️ 国内常被 403）</option>' +
            '          <option value="moonshot-v1-8k">Moonshot · Kimi（免费额度）</option>' +
            '          <option value="openai/gpt-4o-mini">OpenRouter · gpt-4o-mini</option>' +
            '        </select>' +
            '        <div class="jj-btns"><div id="jj-ai-test" class="jj-btn jj-btn-soft">🧪 测试 AI 连接</div></div>' +
            '      </div>' +
            '      <div class="jj-hint">默认「智谱 GLM · glm-4-flash」国内直连免费，Key 已预填，可点测试验证。⚠️ Groq 国内常被 403；SiliconFlow 需充值。</div>' +
            '    </div>' +
            '  </div>' +
            '  <div class="jj-pane jj-hidden" id="jj-pane-tool">' +
            '    <div class="jj-card">' +
            '      <div class="jj-card-title">📷 OCR 扫描（图片题）</div>' +
            '      <div class="jj-ocr-cfg">' +
            '        <div class="jj-btns"><div id="jj-ocr-mask" class="jj-btn jj-btn-gold">📷 遮罩框选扫描题目</div></div>' +
            '        <div class="jj-btns">' +
            '          <label class="jj-filebtn" style="display:inline-block;padding:6px 10px;background:rgba(255,255,255,.12);border-radius:8px;cursor:pointer">📂 选择题目图片<input id="jj-ocr-file" type="file" accept="image/*" style="display:none"></label>' +
            '          <span class="jj-hint" style="display:inline">或 Ctrl+V 粘贴截图</span>' +
            '        </div>' +
            '        <input id="jj-ocr-key" class="jj-input" type="password" placeholder="OCR.space Key（填了用云端，更准）" autocomplete="off">' +
            '        <select id="jj-ocr-engine" class="jj-input">' +
            '          <option value="ocrspace">OCR.space 云端（需 Key）</option>' +
            '          <option value="tesseract">Tesseract 本地（免 Key，中文一般）</option>' +
            '        </select>' +
            '        <div class="jj-row2" style="display:flex;gap:8px;align-items:center;flex-wrap:wrap">' +
            '          <span style="opacity:.85">题号</span><input id="jj-ocr-qidx" class="jj-input" style="width:56px" value="1">' +
            '          <label style="display:flex;gap:4px;align-items:center;cursor:pointer"><input id="jj-ocr-autosub" type="checkbox">识别后自动提交</label>' +
            '        </div>' +
            '        <div class="jj-btns"><div id="jj-ocr-scan" class="jj-btn jj-btn-gold">📷 扫描并作答</div></div>' +
            '        <div id="jj-ocr-preview" class="jj-ocr-preview jj-hidden" style="margin-top:6px;padding:8px;border-radius:8px;background:rgba(0,0,0,.25);max-height:160px;overflow:auto;font-size:12px;line-height:1.5"></div>' +
            '      </div>' +
            '      <div class="jj-hint">文字题无需此功能。<b>框选后优先直读该区域文字</b>（免 OCR）；确为纯图片题才走 OCR（云端需 Key，本地可能被站点 CSP 拦截）。</div>' +
            '    </div>' +
            '    <div class="jj-card">' +
            '      <div class="jj-card-title">🔍 适配探针</div>' +
            '      <div class="jj-btns"><div id="jj-probe" class="jj-btn jj-btn-soft" style="margin-top:0">🔍 导出题目 DOM</div></div>' +
            '      <div class="jj-hint">新页面识别失败时，导出<b>题目区 HTML</b> 发给开发者校准。</div>' +
            '    </div>' +
            '  </div>' +
            '  <div class="jj-pane jj-hidden" id="jj-pane-log">' +
            '    <div class="jj-card">' +
            '      <div class="jj-card-title">📜 运行日志</div>' +
            '      <textarea id="debug-box" readonly></textarea>' +
            '    </div>' +
            '    <div class="jj-btns"><div id="jj-copy" class="jj-btn jj-btn-soft">📋 复制诊断日志</div></div>' +
            '  </div>' +
            '  <div class="jj-footlinks">' +
            '    <span id="jj-reward" class="jj-fl">❤ 打赏</span>' +
            '    <a id="jj-qq" class="jj-fl" href="https://qm.qq.com/q/HmejDdd0Ec" target="_blank" rel="noopener">💬 反馈</a>' +
            '    <span id="jj-help2" class="jj-fl">📖 教程</span>' +
            '  </div>' +
            '</div>';
        document.body.appendChild(panel);

        // AI 智能答题开关 + 配置（默认开启；未配置 Key 时预填内置 SiliconFlow Key）
        var aiSw = panel.querySelector("#jj-ai");
        var aiCfg = panel.querySelector("#jj-ai-cfg");
        var aiKey = panel.querySelector("#jj-ai-key");
        var aiBase = panel.querySelector("#jj-ai-base");
        var aiModel = panel.querySelector("#jj-ai-model");
        var AI_DEFAULT_KEY = "fef551208fc14e6bb511fa56898cdae3.jPY2YI5eVbwqB5Mv";
        function aiOn() { return localStorage.getItem("华医AION") !== "0"; }
        function syncAI() {
            aiSw.classList.toggle("on", aiOn());
            aiCfg.classList.toggle("jj-hidden", !aiOn());
            // 迁移：若仍存着旧的 SiliconFlow 默认 Key（已余额不足 402），且用户明示改用 Zhipu，则替换为新默认
            var OLD_SF = "sk-znowkugiqqlpwysdwfyqcculzinwvbxqnqffbwertebxjvlz";
            if (localStorage.getItem("华医AIKey") === OLD_SF) {
                localStorage.setItem("华医AIKey", AI_DEFAULT_KEY);
                localStorage.setItem("华医AIBase", "https://open.bigmodel.cn/api/paas/v4");
                localStorage.setItem("华医AIModel", "glm-4-flash");
            }
            // 首次使用（且开启）预填内置 Key：自用脚本可直接用；若分享给他人请先清空
            if (!localStorage.getItem("华医AIKey") && aiOn()) {
                localStorage.setItem("华医AIKey", AI_DEFAULT_KEY);
            }
            aiKey.value = localStorage.getItem("华医AIKey") || "";
            aiBase.value = localStorage.getItem("华医AIBase") || "https://open.bigmodel.cn/api/paas/v4";
            var m = localStorage.getItem("华医AIModel");
            if (m) aiModel.value = m;
            else aiModel.value = "glm-4-flash";
        }
        aiSw.onclick = function () {
            localStorage.setItem("华医AION", (aiOn() ? "0" : "1"));
            syncAI();
            window.debugLog("🤖 AI 智能答题：" + (aiOn() ? "已开启（答题页将自动用 AI 作答并提交）" : "已关闭（答题页将停手，可手动或点强制获取）"));
        };
        aiKey.onchange = function () { localStorage.setItem("华医AIKey", aiKey.value.trim()); window.debugLog("🔑 已保存 AI API Key"); };
        aiBase.onchange = function () { localStorage.setItem("华医AIBase", aiBase.value.trim()); };
        aiModel.onchange = function () {
            localStorage.setItem("华医AIModel", aiModel.value);
            var v = aiModel.value;
            var map = {
                "deepseek-chat": "https://api.deepseek.com/v1",
                "qwen-plus": "https://dashscope.aliyuncs.com/compatible-mode/v1",
                "qwen-turbo": "https://dashscope.aliyuncs.com/compatible-mode/v1",
                "glm-4-flash": "https://open.bigmodel.cn/api/paas/v4",
                "Qwen/Qwen2.5-7B-Instruct": "https://api.siliconflow.cn/v1",
                "deepseek-ai/DeepSeek-V3": "https://api.siliconflow.cn/v1",
                "llama-3.3-70b-versatile": "https://api.groq.com/openai/v1"
            };
            if (map[v]) {
                aiBase.value = map[v];
                localStorage.setItem("华医AIBase", aiBase.value);
                var note = (v === "llama-3.3-70b-versatile") ? "（⚠️ Groq 国内常被 403 地域限制，如遇 Forbidden 请换 DeepSeek/阿里云/智谱）" : "";
                window.debugLog("🔄 已切换模型：" + aiModel.options[aiModel.selectedIndex].text + "，Base 已改为 " + aiBase.value + note);
            }
        };
        // AI 连接测试：用内置示例题验证 Key / Base / 模型是否可用
        panel.querySelector("#jj-ai-test").onclick = function () {
            if (!aiReady()) { window.debugLog("⚠️ 请先开启 AI 并填入 API Key"); return; }
            window.debugLog("🧪 正在测试 AI 连接…");
            var demo = [
                { letter: "A", text: "H₂O" },
                { letter: "B", text: "CO₂" },
                { letter: "C", text: "O₂" },
                { letter: "D", text: "N₂" }
            ];
            aiAnswer("水的化学式是什么？", demo).then(function (res) {
                if (res.letter) {
                    window.debugLog("✅ AI 测试通过，返回：" + res.letter + (res.letter === "A" ? "（与预期一致 ✓）" : "（注意：预期为 A，模型给了 " + res.letter + "，请确认模型是否适配单选）"));
                } else {
                    window.debugLog("❌ AI 测试失败：" + (res.message || "未返回有效字母") + (res.status ? "（HTTP " + res.status + "）" : "") + (res.status === 402 ? " → 余额不足，请充值或更换免费 Key" : (res.status === 401 ? " → Key 无效" : (res.status === 404 ? " → 模型名不存在" : ""))));
                }
            });
        };
        syncAI();

        // ===== 视频自动静音 =====
        var muteSw = panel.querySelector("#jj-mute");
        function syncMute() { muteSw.classList.toggle("on", localStorage.getItem("华医Mute") !== "0"); }
        muteSw.onclick = function () {
            localStorage.setItem("华医Mute", (localStorage.getItem("华医Mute") === "0" ? "1" : "0"));
            syncMute();
            muteAllVideos();
            window.debugLog("🔊 视频静音：" + (localStorage.getItem("华医Mute") === "0" ? "已关闭（恢复声音）" : "已开启（自动静音）"));
        };
        syncMute();

        // ===== OCR 扫描答题：事件绑定 =====
        var ocrFile = panel.querySelector("#jj-ocr-file");
        var ocrKey = panel.querySelector("#jj-ocr-key");
        var ocrEngine = panel.querySelector("#jj-ocr-engine");
        var ocrQidx = panel.querySelector("#jj-ocr-qidx");
        var ocrAutosub = panel.querySelector("#jj-ocr-autosub");
        ocrKey.value = localStorage.getItem("华医OCRKey") || "";
        ocrEngine.value = localStorage.getItem("华医OCREngine") || "ocrspace";
        ocrQidx.value = localStorage.getItem("华医OCRQIndex") || "1";
        ocrAutosub.checked = localStorage.getItem("华医OCRAutoSubmit") === "1";
        ocrKey.onchange = function () { localStorage.setItem("华医OCRKey", ocrKey.value.trim()); };
        ocrEngine.onchange = function () { localStorage.setItem("华医OCREngine", ocrEngine.value); };
        ocrQidx.onchange = function () { localStorage.setItem("华医OCRQIndex", ocrQidx.value); };
        ocrAutosub.onchange = function () { localStorage.setItem("华医OCRAutoSubmit", ocrAutosub.checked ? "1" : "0"); };
        ocrFile.onchange = function () {
            var f = ocrFile.files && ocrFile.files[0];
            if (f) fileToDataUrl(f, function (d) { pendingOcrImage = d; window.debugLog("🖼️ 已载入图片，点「扫描并作答」"); });
        };
        panel.querySelector("#jj-ocr-scan").onclick = function () { doOcrAnswer(); };
        var ocrMaskBtn = panel.querySelector("#jj-ocr-mask");
        if (ocrMaskBtn) ocrMaskBtn.onclick = function () { startMaskScan(); };
        // 粘贴截图（Ctrl+V）
        document.addEventListener("paste", function (e) {
            var items = e.clipboardData && e.clipboardData.items;
            if (!items) return;
            for (var i = 0; i < items.length; i++) {
                if (items[i].type && items[i].type.indexOf("image") === 0) {
                    var blob = items[i].getAsFile();
                    if (blob) fileToDataUrl(blob, function (d) {
                        pendingOcrImage = d;
                        window.debugLog("🖼️ 已从剪贴板载入截图，点「扫描并作答」");
                    });
                }
            }
        });

        // 复制诊断日志
        panel.querySelector("#jj-copy").onclick = function () { copyDiag(); };

        // 强制获取/作答（无视开关，立即扫描题目、填答并提交）
        panel.querySelector("#jj-force").onclick = function () { forceAnswer(); };

        // 适配探针：导出当前题目区 DOM 供校准
        panel.querySelector("#jj-probe").onclick = function () { dumpHdblDom(); };

        // 打赏 / 反馈 / 教程
        panel.querySelector("#jj-reward").onclick = function () { openReward(); };
        panel.querySelector("#jj-help").onclick = function () { openTutorial(true); };
        panel.querySelector("#jj-help2").onclick = function () { openTutorial(true); };

        // 批量学习（按学科选课）UI
        initBatchUI();

        // 收起 / 关闭
        panel.querySelector("#jj-min").onclick = function () { panel.classList.toggle("jj-collapsed"); };
        panel.querySelector("#jj-close").onclick = function () { panel.remove(); };

        // 面板拖动 + 位置记忆
        initPanelDrag(panel);
        initTabs(panel);
        initCardCollapse(panel);

        // 首次使用自动弹出教程（仅一次）
        showTutorialIfNeeded();
    }

    // 分页签：同一时间只显示一个面板，避免 UI 过长遮挡页面
    function initTabs(panel) {
        var tabs = panel.querySelectorAll(".jj-tab");
        if (!tabs.length) return;
        function activate(name) {
            for (var i = 0; i < tabs.length; i++) {
                tabs[i].classList.toggle("active", tabs[i].getAttribute("data-pane") === name);
            }
            var panes = panel.querySelectorAll(".jj-pane");
            for (var j = 0; j < panes.length; j++) {
                panes[j].classList.toggle("jj-hidden", panes[j].id !== ("jj-pane-" + name));
            }
            try { localStorage.setItem("华医Tab", name); } catch (e) {}
        }
        for (var k = 0; k < tabs.length; k++) {
            (function (t) {
                t.onclick = function () { activate(t.getAttribute("data-pane")); };
            })(tabs[k]);
        }
        var last = null;
        try { last = localStorage.getItem("华医Tab"); } catch (e) {}
        if (last && panel.querySelector("#jj-pane-" + last)) activate(last);
    }

    // 卡片折叠：把每张卡片标题之后的兄弟节点包进 .jj-card-body，点击标题折叠/展开（状态记忆）
    var CARD_FOLD_PREFIX = "华医CardFold_";
    function cardFoldKey(titleEl) {
        return CARD_FOLD_PREFIX + (titleEl.getAttribute("data-key") || titleEl.getAttribute("data-idx") || "0");
    }
    // 分页后每页内容都很短，默认全部展开（仍可点标题手动折叠）
    function cardDefaultFolded(name) {
        return "0";
    }
    function initCardCollapse(panel) {
        // v3.1 起改为分页布局：清掉旧的默认折叠记忆，避免卡片莫名收起
        try {
            if (localStorage.getItem("华医FoldReset31") !== "1") {
                var del = [];
                for (var d = 0; d < localStorage.length; d++) {
                    var kk = localStorage.key(d);
                    if (kk && kk.indexOf(CARD_FOLD_PREFIX) === 0) del.push(kk);
                }
                for (var dd = 0; dd < del.length; dd++) localStorage.removeItem(del[dd]);
                localStorage.setItem("华医FoldReset31", "1");
            }
        } catch (e) {}
        var cards = panel.querySelectorAll(".jj-card");
        for (var i = 0; i < cards.length; i++) {
            (function (card) {
                var title = card.querySelector(".jj-card-title");
                if (!title) return;
                if (!card.querySelector(".jj-card-body")) {
                    var body = document.createElement("div");
                    body.className = "jj-card-body";
                    var n = title.nextSibling;
                    while (n) { var nx = n.nextSibling; body.appendChild(n); n = nx; }
                    card.appendChild(body);
                }
                var key = cardFoldKey(title);
                if (localStorage.getItem(key) === null) {
                    localStorage.setItem(key, cardDefaultFolded((title.innerText || "")));
                }
                title.setAttribute("data-idx", String(i));
                var arrow = title.querySelector(".jj-arrow");
                if (!arrow) {
                    arrow = document.createElement("span");
                    arrow.className = "jj-arrow";
                    title.appendChild(arrow);
                    title.classList.add("jj-foldable");
                }
                function apply() {
                    var folded = localStorage.getItem(key) === "1";
                    card.classList.toggle("jj-folded", folded);
                    arrow.textContent = folded ? "▶" : "▼";
                }
                title.onclick = function () {
                    localStorage.setItem(key, localStorage.getItem(key) === "1" ? "0" : "1");
                    apply();
                };
                apply();
            })(cards[i]);
        }
        var fa = panel.querySelector("#jj-foldall");
        if (fa) fa.onclick = function () {
            var anyOpen = false;
            var list = panel.querySelectorAll(".jj-card .jj-card-title.jj-foldable");
            for (var i = 0; i < list.length; i++) {
                if (localStorage.getItem(cardFoldKey(list[i])) !== "1") { anyOpen = true; break; }
            }
            for (var j = 0; j < list.length; j++) localStorage.setItem(cardFoldKey(list[j]), anyOpen ? "1" : "0");
            initCardCollapse(panel);
            try { window.debugLog(anyOpen ? "🗂 已收起全部卡片" : "🗂 已展开全部卡片"); } catch (e) {}
        };
    }

    function initPanelDrag(panel) {
        try {
            var pos = (localStorage.getItem("华医PanelPos") || "").split(",");
            if (pos.length === 2 && pos[0] && pos[1]) {
                var x = parseInt(pos[0], 10), y = parseInt(pos[1], 10);
                if (!isNaN(x) && !isNaN(y)) {
                    panel.style.left = x + "px";
                    panel.style.top = y + "px";
                    panel.style.right = "auto";
                    panel.style.bottom = "auto";
                }
            }
        } catch (e) {}
        var head = panel.querySelector(".jj-head");
        if (!head) head = panel;
        var dragging = false, sx = 0, sy = 0, ox = 0, oy = 0;
        function onDown(e) {
            if (e.target.closest && e.target.closest(".jj-ico")) return; // 点按钮不触发拖动
            dragging = true;
            panel.classList.add("jj-dragging");
            var r = panel.getBoundingClientRect();
            panel.style.left = r.left + "px";
            panel.style.top = r.top + "px";
            panel.style.right = "auto";
            panel.style.bottom = "auto";
            sx = (e.touches ? e.touches[0].clientX : e.clientX);
            sy = (e.touches ? e.touches[0].clientY : e.clientY);
            ox = r.left; oy = r.top;
            if (e.cancelable) e.preventDefault();
        }
        function onMove(e) {
            if (!dragging) return;
            var cx = (e.touches ? e.touches[0].clientX : e.clientX);
            var cy = (e.touches ? e.touches[0].clientY : e.clientY);
            var nx = ox + (cx - sx), ny = oy + (cy - sy);
            nx = Math.max(4, Math.min(nx, window.innerWidth - panel.offsetWidth - 4));
            ny = Math.max(4, Math.min(ny, window.innerHeight - panel.offsetHeight - 4));
            panel.style.left = nx + "px";
            panel.style.top = ny + "px";
        }
        function onUp() {
            if (!dragging) return;
            dragging = false;
            panel.classList.remove("jj-dragging");
            try { localStorage.setItem("华医PanelPos", panel.offsetLeft + "," + panel.offsetTop); } catch (e) {}
        }
        head.addEventListener("mousedown", onDown);
        document.addEventListener("mousemove", onMove);
        document.addEventListener("mouseup", onUp);
        head.addEventListener("touchstart", onDown, { passive: false });
        document.addEventListener("touchmove", onMove, { passive: false });
        document.addEventListener("touchend", onUp);
    }

    function showTutorialIfNeeded() {
        try { openTutorial(false); } catch (e) {}
    }

    // ===================== 核心变量 =====================
    var submitTime = 6800;
    var reTryTime = 3500;
    var examTime = 7000;
    var randomX = 5000;
    var autoSkip = false;
    var keyTest = "JJ_Test";
    var keyResult = "JJ_Result";
    var keyThisTitle = "JJ_ThisTitle";
    var keyTestAnswer = "JJ_TestAnswer";
    var keyRightAnswer = "JJ_RightAnswer";
    var keyAllAnswer = "JJ_AllAnswer";
    var keyWrongHistory = "JJ_WrongHistory"; // 每道题已排除的错误选项字母
    var keyChoiceMap = "JJ_ChoiceMap";       // 每道题的选项字母->文本映射
    var keyGuessMode = "JJ_GuessMode";       // （v2.4 起不再使用：原盲猜轮换模式标记）
    var keyRoundMap = "JJ_RoundMap";         // （v2.4 起仅用于清理：原盲猜轮换轮次）
    // === 批量学习（按学科选课）===
    var keyBatchQueue = "华医BatchQueue";     // [{cid,title,done}]
    var keyExamFrom = "华医ExamFrom";          // 进入考试前记录的课件视频页 URL，考完后跳回正确播放器类型
    var keyBatchRunning = "华医BatchRunning"; // "1"/"0"
    var keyBatchIndex = "华医BatchIndex";     // 当前处理索引
    var btstyleA = "font-size: 16px;font-weight: 300;text-decoration: none;text-align: center;line-height: 40px;height: 40px;padding: 0 40px;display: inline-block;appearance: none;cursor: pointer;border: none;box-sizing: border-box;transition-property: all;transition-duration: .3s;background-color: #4cb0f9;border-color: #4cb0f9;border-radius: 4px;margin: 5px;color: #FFF;";
    var btstyleB = "font-size: 12px;font-weight: 300;text-decoration: none;text-align: center;line-height: 20px;height: 20px;padding: 0 5px;display: inline-block;appearance: none;cursor: pointer;border: none;box-sizing: border-box;transition-property: all;transition-duration: .3s;background-color: #4cb0f9;border-color: #4cb0f9;border-radius: 4px;margin: 5px;color: #FFF;";
    var btstyleC = "font-size: 12px;font-weight: 300;text-decoration: none;text-align: center;line-height: 20px;height: 20px;padding: 0 5px;display: inline-block;appearance: none;cursor: pointer;border: none;box-sizing: border-box;transition-property: all;transition-duration: .3s;background-color: f15854;border-color: #f15854;border-radius: 4px;margin: 5px;color: #FFF;";
    var huayi = getHuayi();
    var clock = null;
    var examClicked = false; // 防止重复点击「进入考试」

    function hasJQ() {
        return (typeof window.jQuery !== 'undefined') || (typeof window.$ !== 'undefined');
    }
    // （v2.4）自动答题门控已移除：答题页 / 视频播完 / cme 列表页均直接进入 AI 答题，不再有「自动答题」开关

    // ===================== 路由判断（修复：基于 pathname 模糊匹配，识别 /cme/index） =====================
    function pathHas(p) { return window.location.pathname.indexOf(p) !== -1; }
    function hashHas(p) { return (window.location.hash || "").indexOf(p) !== -1; }
    function inHdbl() { return /hdbl\.91huayi\.com/i.test(window.location.host); }
    function routeHdbl() {
        if (inHdbl() && hashHas("/problem/question")) {
            huayi.doHdblQuestion();
            return true;
        }
        return false;
    }

    function boot() {
        createDebugWindow();
        debugLog("🚀 爱国者 · 华医网 AI 助手 启动成功，版本：V3.3");

        var matched = true;
        if (pathHas("course_ware_polyv")) {
            huayi.seeVideo(1);
        } else if (pathHas("course_ware_cc")) {
            huayi.seeVideo(2);
        } else if (pathHas("exam_result")) {
            huayi.doResult();
        } else if (pathHas("exam.aspx") || pathHas("/pages/exam")) {
            huayi.doTest();
        } else if (pathHas("course.aspx") && !pathHas("course_ware")) {
            // /pages/course.aspx?cid= 项目详情页：自动进入课件学习（批量选课模式）
            debugLog("📂 项目详情页：尝试自动进入课件学习");
            setTimeout(handleProjectDetail, 2500);
            setTimeout(handleProjectDetail, 6000);
        } else if (pathHas("/cme/") || pathHas("cme.aspx")) {
            // /cme/index、/cme/ 等课程总览页 → 课程列表逻辑
            huayi.courseList();
        } else {
            matched = false;
        }

        // SPA 页面（如 hdbl 答题页）不在 pathname 中，改用 hash 路由判断
        if (!matched) {
            if (routeHdbl()) matched = true;
        }

        // 批量学习区：仅在有学科/项目列表的页面显示
        try {
            var batchSec = document.getElementById("jj-batch");
            if (batchSec) {
                var showBatch = !!document.querySelector(".sut_lis, .jet_lis") || pathHas("course.aspx");
                batchSec.classList.toggle("jj-hidden", !showBatch);
            }
        } catch (e) {}

        try {
            var tixing = document.querySelector("span[id='tixing']");
            if (tixing) {
                tixing.innerHTML = matched ? "当前网址已适配 ✅" : "此页面非视频、考试或未适配<br>";
            }
        } catch (e) {}

        if (matched) {
            debugLog("✅ 当前页面已识别，准备执行任务");
        } else {
            debugLog("ℹ️ 此页不在自动处理范围（如课程总览可手动操作）");
        }
    }

    function ready(cb) {
        if (document.body) cb();
        else window.addEventListener('DOMContentLoaded', cb);
    }
    ready(boot);
    // SPA 路由：hdbl 等页面不刷新，靠 hash 变化触发答题流程
    window.addEventListener("hashchange", function () {
        try { if (inHdbl()) setTimeout(routeHdbl, 700); } catch (e) {}
    });
    // 视频自动静音：全局轮询（视频可能是动态加载 / SPA 路由切换后出现），仅在开关开启时执行
    setInterval(function () {
        try { if (localStorage.getItem("华医Mute") !== "0") muteAllVideos(); } catch (e) {}
    }, 1500);

    function getHuayi() {
        return {
            courseList: function () {
                var main = document.getElementById("main_div");
                if (!main) {
                    debugLog("ℹ️ 未找到 main_div，本课程页无需注入答案按钮");
                    return;
                }
                addAnwserCopybtn();
                DelAllAnwser();
            },
            doHdblQuestion: function () {
                var self = this;
                self.__hdblTimer && clearTimeout(self.__hdblTimer);
                debugLog("🤖 适配 hdbl 答题页，自动识别题目…");
                var attempt = 0;
                function tryOnce() {
                    var qs = extractHdblQuestions();
                    if (qs.length === 0) {
                        attempt++;
                        if (attempt <= 40) {
                            if (attempt === 1) debugLog("⏳ 题目尚未渲染，等待 SPA 加载…");
                            self.__hdblTimer = setTimeout(tryOnce, 1200);
                        } else {
                            debugLog("⚠️ 未识别到题目结构，已导出 DOM 供校准（也可点面板「🔍 适配探针」）");
                            dumpHdblDom();
                        }
                        return;
                    }
                    debugLog("✅ 识别到 " + qs.length + " 道题目，调用 AI 作答…");
                    (async function () {
                        var answered = 0;
                        for (var k = 0; k < qs.length; k++) {
                            var q = qs[k];
                            var isMulti = /多选/.test(q.badge || "");
                            if (isMulti) {
                                var mr = await aiAnswerMulti(q.text, q.choices);
                                if (mr.letters && mr.letters.length) {
                                    mr.letters.forEach(function (L) {
                                        var c = q.choices.filter(function (x) { return x.letter === L; })[0];
                                        if (c) { try { (c.label || c.el).click(); } catch (e) {} }
                                    });
                                    answered++;
                                    debugLog("🤖 第" + (k + 1) + "题 [多选·AI] 选 " + mr.letters.join("、"));
                                } else {
                                    debugLog("⚠️ 第" + (k + 1) + "题（多选）AI 未给答案：" + (mr.message || "未知"));
                                }
                            } else {
                                var res = await jjPickAnswer(q.text, q.text, q.choices, { qRightAnswer: {}, qWrongHistory: {} });
                                if (res.pick) {
                                    try { (res.pick.label || res.pick.el).click(); } catch (e) {}
                                    answered++;
                                    var tag = res.src === "AI 智能" ? "🤖" : (res.src.indexOf("兜底") !== -1 ? "🛟" : "📝");
                                    debugLog(tag + " 第" + (k + 1) + "题 [" + res.src + "] 选 " + res.pick.letter);
                                } else {
                                    debugLog("⚠️ 第" + (k + 1) + "题 AI 未给答案（" + (res.message || "") + "）");
                                }
                            }
                        }
                        debugLog("✅ 已作答 " + answered + " 题");
                        setTimeout(function () {
                            var btn = findHdblSubmit() || findButtonByText(/提交|下一题|下一页|确定|交卷|next|submit|save/i);
                            if (btn) {
                                try { btn.click(); } catch (e) {}
                                debugLog("📤 已点击「" + (ownText(btn) || "").slice(0, 12) + "」");
                                setTimeout(function () {
                                    var cf = findHdblConfirm();
                                    if (cf) { try { cf.click(); } catch (e) {} debugLog("📤 已确认弹窗「" + ownText(cf).slice(0, 10) + "」"); }
                                }, 900);
                            } else {
                                debugLog("ℹ️ 未找到提交/下一题按钮，已导出按钮结构（发开发者即可精准校准）");
                                dumpHdblButtons();
                            }
                        }, 1500);
                    })();
                }
                tryOnce();
            },
            seeVideo: function (e) {
                localStorage.setItem(keyExamFrom, location.href);
                cleanKeyStorage();
                asynckillsendQuestion();
                killsendQuestion2();
                killsendQuestion3();
                addinfo();

                var onReady = function () {
                    localStorage.setItem(keyThisTitle, JSON.stringify(window.document.title));
                    if (autoSkip == true) {
                        setTimeout(function () { skipVideo(); }, (submitTime + Math.ceil(Math.random() * randomX)));
                    }
                    clock = setInterval(examherftest, 3000);
                    switch (e) {
                        case 1:
                            // 修复：原代码写成 window.s2j_onPlayerInitOver(){}（当成函数调用，运行时抛错）
                            window.s2j_onPlayerInitOver = function () {
                                if (typeof player !== 'undefined' && player) player.j2s_setVolume(0);
                                var v = document.querySelector("video");
                                if (v) v.defaultMuted = true;
                                setTimeout(function () {
                                    try {
                                        if (typeof player !== 'undefined' && player) player.j2s_resumeVideo();
                                        examherftest();
                                        debugLog("▶️ 视频已自动播放，已静音");
                                    } catch (error) { }
                                }, 8000);
                            };
                            break;
                        case 2:
                            window.on_CCH5player_ready = function () {
                                if (typeof cc_js_Player !== 'undefined' && cc_js_Player) cc_js_Player.setVolume(0);
                                var v = document.querySelector("video");
                                if (v) v.defaultMuted = true;
                                setTimeout(function () {
                                    try {
                                        if (typeof cc_js_Player !== 'undefined' && cc_js_Player) cc_js_Player.play();
                                        examherftest();
                                        debugLog("▶️ 视频已自动播放，已静音");
                                    } catch (error) { }
                                }, 8000);
                            };
                            break;
                    }
                };

                if (document.readyState === 'complete') { onReady(); }
                else { window.addEventListener('load', onReady, { once: true }); }
            },

            doTest: function () {
                var self = this;
                if (self.__testTimer) { clearTimeout(self.__testTimer); self.__testTimer = null; }
                var attempt = 0;
                var MAX = 25;
                function tryOnce() {
                    var qs = document.querySelectorAll("table[class='tablestyle']");
                    if (qs.length === 0) {
                        attempt++;
                        if (attempt <= MAX) {
                            debugLog("⏳ 考试题目尚未渲染，重试 (" + attempt + "/" + MAX + ")");
                            self.__testTimer = setTimeout(tryOnce, 1500);
                        } else {
                            debugLog("⚠️ 未找到考试题目(table.tablestyle)，可能页面异常或非标准考试页");
                        }
                        return;
                    }
                    self.__doAnswer();
                }
                debugLog("🤖 自动 AI 答题中（直接读题，无需遮罩）");
                tryOnce();
            },

            __doAnswer: async function () {
                var questions = JSON.parse(localStorage.getItem(keyTest)) || {};
                var qRightAnswer = JSON.parse(localStorage.getItem(keyRightAnswer)) || {};
                if (JSON.stringify(qRightAnswer) == "{}") {
                    qRightAnswer = LoadRightAnwser();
                }
                var qTestAnswer = {};
                var qChoiceMap = JSON.parse(localStorage.getItem(keyChoiceMap)) || {};
                var qWrongHistory = JSON.parse(localStorage.getItem(keyWrongHistory)) || {};
                // ctx 持有对象引用，jjPickAnswer 内部对 wrong 的修改会直接写回
                var ctx = { qRightAnswer: qRightAnswer, qWrongHistory: qWrongHistory };
                var index = 0;
                var answered = 0;

                while (true) {
                    var question = document.querySelectorAll("table[class='tablestyle']")[index];
                    if (question == null) break;
                    var qEl = question.querySelector(".q_name");
                    if (!qEl) { index++; continue; }
                    var qRaw = qEl.innerText || "";
                    var q = normalizeQuestion(qRaw);
                    if (!q) { index++; continue; }

                    var tbody = question.querySelector("tbody");
                    if (!tbody) tbody = question;
                    var choices = parseChoices(tbody);
                    if (choices.length === 0) { index++; continue; }

                    // 更新选项映射（用于结果页把文本转回字母）
                    var choiceMap = {};
                    choices.forEach(function (c) { choiceMap[c.letter] = c.text; });
                    qChoiceMap[q] = choiceMap;

                    // 优先 AI 作答，失败/未配置回落记录答案，仍错则由结果页重考并排除错项
                    var res = await jjPickAnswer(qRaw, q, choices, ctx);
                    var pick = res.pick;
                    var pickLetter = pick ? pick.letter : null;
                    var pickText = pick ? pick.text : null;

                    if (pick) {
                        pick.el.click();
                        questions[q] = pickLetter;
                        qTestAnswer[q] = pickText || choiceMap[pickLetter];
                        answered++;
                        var tag = res.src === "AI 智能" ? "🤖" : (res.src === "记录答案" ? "✅" : (res.src.indexOf("兜底") !== -1 ? "🛟" : "📝"));
                        debugLog(tag + " 第" + (index + 1) + "题 [" + res.src + "] 选 " + pickLetter + "：" + (pickText || "").slice(0, 30));
                    }
                    index++;
                }

                localStorage.setItem(keyTest, JSON.stringify(questions));
                localStorage.setItem(keyTestAnswer, JSON.stringify(qTestAnswer));
                localStorage.setItem(keyChoiceMap, JSON.stringify(qChoiceMap));
                localStorage.setItem(keyWrongHistory, JSON.stringify(qWrongHistory));
                debugLog("✅ 已作答 " + answered + " 题，准备提交");

                setTimeout(function () {
                    var sb = document.querySelector("#btn_submit");
                    if (sb) { sb.click(); debugLog("📤 已自动提交试卷"); }
                    else debugLog("⚠️ 未找到提交按钮 #btn_submit");
                }, (submitTime + Math.ceil(Math.random() * randomX)));
            },

            doResult: function () {
                var tipsEl = document.querySelector(".tips_text");
                var res = tipsEl ? tipsEl.innerText : "";
                var dds = document.querySelectorAll(".state_cour_lis");
                localStorage.removeItem(keyResult);

                var qTestAnswer = JSON.parse(localStorage.getItem(keyTestAnswer)) || {};
                var qChoiceMap = JSON.parse(localStorage.getItem(keyChoiceMap)) || {};
                var qWrongHistory = JSON.parse(localStorage.getItem(keyWrongHistory)) || {};
                var qRightAnswer = JSON.parse(localStorage.getItem(keyRightAnswer)) || {};
                var resultInfo = parseResultPage();

                if (jjIsPass(res)) {
                    saveRightAnwser();
                    SaveAllAnwser();
                    // 通过的题目从错误历史中释放
                    Object.keys(qTestAnswer).forEach(function (q) {
                        delete qWrongHistory[q];
                    });
                    localStorage.setItem(keyWrongHistory, JSON.stringify(qWrongHistory));
                    cleanKeyStorage();
                    setTimeout(function () {
                        var from = localStorage.getItem(keyExamFrom);
                        if (from) { window.location.href = from; return; }
                        var cwid = new URLSearchParams(window.location.search).get("cwid");
                        if (cwid) {
                            var player = (location.host + location.pathname).indexOf("course_ware_cc") !== -1 ? "course_ware_cc" : "course_ware_polyv";
                            window.location.href = location.origin + "/" + player + ".aspx?cwid=" + cwid + "&ff=0&ft=0";
                        } else {
                            window.history.back();
                        }
                    }, 2000);
                    return;
                }

                // 未通过：解析结果页，精准拉黑错题的本次选项
                if (tipsEl) tipsEl.innerText = "本次未通过，正在尝试更换答案\r\n（此为正常现象，脚本几秒后刷新，请勿操作）";
                var qWrong = {};

                function recordWrong(q, letter) {
                    qWrong[q] = true;
                    if (!letter) return;
                    if (!qWrongHistory[q]) qWrongHistory[q] = [];
                    if (qWrongHistory[q].indexOf(letter) === -1) {
                        qWrongHistory[q].push(letter);
                    }
                }
                function recordRight(q, text) {
                    if (text) qRightAnswer[q] = text;
                }

                // 优先使用解析到的结构化结果
                resultInfo.items.forEach(function (item) {
                    var q = normalizeQuestion(item.question);
                    if (!q) return;
                    if (item.rightText) {
                        recordRight(q, item.rightText);
                    }
                    if (item.isWrong) {
                        var letter = item.userLetter || getLetterByText(q, qTestAnswer[q], qChoiceMap);
                        recordWrong(q, letter);
                    } else {
                        // 非错题：本次答案就是正确答案
                        if (qTestAnswer[q]) recordRight(q, qTestAnswer[q]);
                    }
                });

                // 兜底：原逻辑扫描 .state_cour_lis（直接从「您的答案：X、」提取错选项字母，更稳）
                if (Object.keys(qWrong).length === 0 && dds.length > 0) {
                    for (var i = 0; i < dds.length; ++i) {
                        var img = dds[i].querySelector("img");
                        var isWrong = img && !img.src.includes("bar_img");
                        var psAll = dds[i].querySelectorAll("p");
                        var qp = psAll[0];
                        var ap = psAll[1];
                        var q = qp ? normalizeQuestion(qp.title || qp.innerText) : "";
                        if (!q) continue;
                        if (isWrong) {
                            var letter = null;
                            if (ap) {
                                var am = (ap.title || ap.innerText || "").match(/您的答案[：:]\s*([A-Za-z])[、.\s]/);
                                if (am) letter = am[1].toUpperCase();
                            }
                            if (!letter) letter = getLetterByText(q, qTestAnswer[q], qChoiceMap);
                            recordWrong(q, letter);
                        } else {
                            if (qTestAnswer[q]) recordRight(q, qTestAnswer[q]);
                        }
                    }
                }

                var parsedWrong = Object.keys(qWrong).length;
                if (parsedWrong > 0) {
                    // 精确识别到对错：将错题的本次选项加入排除列表，重考时 AI 自动避开
                    localStorage.removeItem(keyRoundMap);
                    localStorage.setItem(keyWrongHistory, JSON.stringify(qWrongHistory));
                    localStorage.setItem(keyRightAnswer, JSON.stringify(qRightAnswer));
                    localStorage.setItem(keyResult, JSON.stringify(qWrong));
                    saveRightAnwser();
                    debugLog("❌ 本次错题 " + parsedWrong + " 道，已加入排除列表，重考将避开");
                } else {
                    // 结果页无法识别对错：保持现状，重考时由 AI 重新扫描作答
                    localStorage.setItem(keyWrongHistory, JSON.stringify(qWrongHistory));
                    localStorage.setItem(keyRightAnswer, JSON.stringify(qRightAnswer));
                    debugLog("⚠️ 结果页无法识别对错，将重新用 AI 扫描作答");
                }
                setTimeout(function () {
                    var retryBtn = findRetryExamButton();
                    if (retryBtn) { retryBtn.click(); debugLog("🔄 点击重新考试"); }
                    else debugLog("⚠️ 未找到「重新考试」按钮");
                }, (reTryTime + Math.ceil(Math.random() * randomX)));
            }
        };
    }

    // ===================== 强制获取（F12 控制台 / 面板按钮，v2.2 新增） =====================
    // 无视开关，立即扫描题目、填答并打印每题明细，再自动提交。
    // 用法：面板点「🔓 强制获取/作答」，或 F12 控制台输入 forceGetAnswers() / 强制获取答案()。
    function jjExtractQuestionText(el) {
        var sels = [".q_name", ".question-title", ".topic-title", "dt", "p[title]", ".tit", ".exam-q", ".q-title", "h3", "h4"];
        for (var i = 0; i < sels.length; i++) {
            var q = el.querySelector(sels[i]);
            if (q) {
                var t = (q.getAttribute("title") || q.innerText || "").trim();
                if (t) return t;
            }
        }
        // 兜底：第一个较长文本节点
        var ps = el.querySelectorAll("p, div, span, h3, h4, h5");
        for (var j = 0; j < ps.length; j++) {
            var tt = (ps[j].innerText || "").trim();
            if (tt.length > 8) return tt;
        }
        return "";
    }
    function jjGetInputLabel(input) {
        // 尝试 label[for]、父级 label、相邻文本、内部文本
        try {
            if (input.id) {
                var l = document.querySelector("label[for='" + input.id + "']");
                if (l) return l.innerText.trim();
            }
            var p = input.parentNode;
            if (p && p.tagName === "LABEL") return p.innerText.trim();
            var txt = "";
            var n = input.nextSibling;
            while (n) { if (n.nodeType === 3) txt += n.textContent; n = n.nextSibling; }
            if (txt.trim()) return txt.trim();
            if (p) {
                var cl = p.querySelector("label, span, font");
                if (cl) return cl.innerText.trim();
            }
        } catch (e) {}
        return "";
    }
    function jjExtractChoices(el) {
        var labels = el.querySelectorAll("label");
        var arr = [];
        if (labels.length) {
            for (var i = 0; i < labels.length; i++) {
                var txt = labels[i].innerText || "";
                var m = txt.match(/^([A-Za-z])[、.\s）)）]+(.*)/) || txt.match(/^([A-Za-z])[\.、\s]*(.*)/);
                if (m) {
                    arr.push({ letter: m[1].toUpperCase(), text: m[2].trim(), el: labels[i] });
                } else {
                    var letter = String.fromCharCode("A".charCodeAt(0) + i);
                    arr.push({ letter: letter, text: txt.trim(), el: labels[i] });
                }
            }
            if (arr.length) return arr;
        }
        // 兜底：radio/checkbox + 文本
        var inputs = el.querySelectorAll("input[type=radio], input[type=checkbox]");
        for (var k = 0; k < inputs.length; k++) {
            var t = jjGetInputLabel(inputs[k]);
            if (!t) continue;
            var lm = t.match(/^([A-Za-z])[、.\s）)）]+(.*)/) || t.match(/^([A-Za-z])[\.、\s]*(.*)/);
            var letter, text;
            if (lm) { letter = lm[1].toUpperCase(); text = lm[2].trim(); }
            else { letter = String.fromCharCode("A".charCodeAt(0) + k); text = t; }
            arr.push({ letter: letter, text: text, el: inputs[k] });
        }
        return arr;
    }
    function jjCollectQuestions() {
        var containers = [];
        // 策略1：原始结构
        var t1 = document.querySelectorAll("table[class='tablestyle']");
        Array.prototype.forEach.call(t1, function (e) { containers.push(e); });
        // 策略2：常见题块选择器
        if (!containers.length) {
            var sels = [".question", ".exam-question", ".topic", ".q_item", ".question-item",
                ".test_table", ".exam_table", "form table", ".topic-list li", ".question-list li", ".cour-list li"];
            sels.forEach(function (s) {
                var els = document.querySelectorAll(s);
                Array.prototype.forEach.call(els, function (e) { containers.push(e); });
            });
        }
        var out = [];
        containers.forEach(function (c) {
            var qRaw = jjExtractQuestionText(c);
            if (!qRaw) return;
            var choices = jjExtractChoices(c);
            if (!choices.length) return;
            out.push({ el: c, raw: qRaw, question: normalizeQuestion(qRaw), choices: choices });
        });
        return out;
    }
    function jjDumpCandidateHTML() {
        var sels = ["form", ".exam_box", ".test_box", ".question_box", "#main_div", ".content", "table"];
        console.warn("[华医][强制获取] 未识别到题目，候选区域 HTML（前 1500 字符，最多 3 个）：");
        sels.forEach(function (s) {
            var els = document.querySelectorAll(s);
            Array.prototype.slice.call(els, 0, 3).forEach(function (e) {
                console.log("--- 候选 " + s + " ---\n" + e.outerHTML.slice(0, 1500));
            });
        });
    }
    async function forceAnswer(opts) {
        opts = opts || {};
        var doSubmit = opts.submit !== false; // 默认提交（两者都要：先导出日志再提交）
        window.debugLog("🔓 强制获取启动…");
        var questions = jjCollectQuestions();
        if (!questions.length) {
            window.debugLog("⚠️ 未识别到题目结构，已打印候选 HTML 到 F12 控制台");
            console.warn("[华医][强制获取] 当前页面未识别到题目。请按以下方式排查：");
            console.warn("1) 确认已进入答题页（exam.aspx）且题目已渲染；");
            console.warn("2) 在 F12 控制台查看上方「候选区域 HTML」，把题目块的 class 发给我，我可加选择器；");
            console.warn("3) 若题目在 iframe 内，脚本默认不处理 iframe，需单独处理。");
            jjDumpCandidateHTML();
            return;
        }

        var qRightAnswer = JSON.parse(localStorage.getItem(keyRightAnswer) || "{}");
        if (JSON.stringify(qRightAnswer) == "{}") qRightAnswer = LoadRightAnwser();
        var qWrongHistory = JSON.parse(localStorage.getItem(keyWrongHistory) || "{}");
        var qChoiceMap = JSON.parse(localStorage.getItem(keyChoiceMap) || "{}");
        var ctx = { qRightAnswer: qRightAnswer, qWrongHistory: qWrongHistory };

        var cnt = { "AI 智能": 0, "记录答案": 0, "排除兜底": 0, "首答兜底": 0 };
        var summary = [];
        for (var i = 0; i < questions.length; i++) {
            var item = questions[i];
            var q = item.question;
            if (!q) continue;
            var choices = item.choices;
            var choiceMap = {};
            choices.forEach(function (c) { choiceMap[c.letter] = c.text; });
            qChoiceMap[q] = choiceMap;

            var res = await jjPickAnswer(item.raw, q, choices, ctx);
            var pick = res.pick;
            if (pick) {
                pick.el.click();
                cnt[res.src] = (cnt[res.src] || 0) + 1;
                var line = "第" + (i + 1) + "题 [" + res.src + "] " + pick.letter + "：" + pick.text.slice(0, 40) + " | 题干：" + item.raw.slice(0, 50);
                summary.push(line);
                console.log("[华医][强制获取] " + line);
                window.debugLog("🔓 " + line);
            }
        }

        localStorage.setItem(keyChoiceMap, JSON.stringify(qChoiceMap));
        localStorage.setItem(keyWrongHistory, JSON.stringify(qWrongHistory));

        // 导出可复制的汇总到控制台
        console.log("[华医][强制获取] ===== 本题识别/作答汇总（共 " + questions.length + " 题）=====");
        console.log("AI 智能 " + cnt["AI 智能"] + " / 记录答案 " + cnt["记录答案"] + " / 兜底 " + (cnt["排除兜底"] + cnt["首答兜底"]));
        console.table(summary);
        window.debugLog("✅ 强制获取完成：共 " + questions.length + " 题（AI " + cnt["AI 智能"] + "，记录 " + cnt["记录答案"] + "，兜底 " + (cnt["排除兜底"] + cnt["首答兜底"]) + "）" + (doSubmit ? "，即将提交" : "，未提交"));

        if (doSubmit) {
            setTimeout(function () {
                var sb = document.querySelector("#btn_submit");
                if (sb) { sb.click(); window.debugLog("📤 已强制提交试卷"); }
                else {
                    window.debugLog("⚠️ 未找到提交按钮 #btn_submit，请手动提交");
                    console.warn("[华医][强制获取] 未找到 #btn_submit，请手动点击页面上的提交/交卷按钮。");
                }
            }, (submitTime + Math.ceil(Math.random() * randomX)));
        }
    }
    // 暴露到全局，方便 F12 控制台直接调用
    window.forceGetAnswers = forceAnswer;
    window.强制获取答案 = forceAnswer;
    window.forceAnswer = forceAnswer;

    // ===================== OCR 扫描答题（图片题） =====================
    var pendingOcrImage = null;          // 待识别的题目截图（dataURL）
    function escapeHtml(s) { return String(s).replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;"); }
    function fileToDataUrl(file, cb) {
        var reader = new FileReader();
        reader.onload = function () { cb(reader.result); };
        reader.onerror = function () { window.debugLog("❌ 图片读取失败"); };
        reader.readAsDataURL(file);
    }
    // OCR.space 云端识别（需免费 Key，中文/医学词最稳）
    function ocrSpace(imgDataUrl) {
        return new Promise(function (resolve) {
            var key = (localStorage.getItem("华医OCRKey") || "").trim();
            if (!key) { resolve({ ok: false, text: "", err: "未配置 OCR.space Key" }); return; }
            var url = "https://api.ocr.space/parse/image";
            var form = "apikey=" + encodeURIComponent(key) +
                "&base64image=" + encodeURIComponent(imgDataUrl) +
                "&language=chs&isOverlayRequired=false&OCREngine=2&scale=true&detectOrientation=true";
            try {
                GM_xmlhttpRequest({
                    method: "POST", url: url,
                    headers: { "Content-Type": "application/x-www-form-urlencoded" },
                    data: form, timeout: 30000,
                    onload: function (r) {
                        try {
                            var j = JSON.parse(r.responseText);
                            if (j.IsErroredOnProcessing) { resolve({ ok: false, text: "", err: ((j.ErrorMessage || []).join(";") || "OCR.space 处理失败") }); return; }
                            var txt = (j.ParsedResults && j.ParsedResults[0] && j.ParsedResults[0].ParsedText) || "";
                            resolve({ ok: true, text: txt });
                        } catch (e) { resolve({ ok: false, text: "", err: "OCR.space 响应解析失败" }); }
                    },
                    onerror: function () { resolve({ ok: false, text: "", err: "OCR.space 网络错误（检查 @connect）" }); },
                    ontimeout: function () { resolve({ ok: false, text: "", err: "OCR.space 超时" }); }
                });
            } catch (e) { resolve({ ok: false, text: "", err: "OCR.space 请求异常：" + e }); }
        });
    }
    // Tesseract.js 本地识别（免 Key 兜底，中文/医学词一般）
    var tessLoading = null;
    function loadTesseract() {
        if (window.Tesseract) return Promise.resolve(window.Tesseract);
        if (tessLoading) return tessLoading;
        tessLoading = new Promise(function (res) {
            var s = document.createElement("script");
            s.src = "https://cdn.jsdelivr.net/npm/tesseract.js@5/dist/tesseract.min.js";
            s.onload = function () { res(window.Tesseract || null); };
            s.onerror = function () { res(null); };
            (document.head || document.documentElement).appendChild(s);
        });
        return tessLoading;
    }
    function ocrTesseract(imgDataUrl) {
        return loadTesseract().then(function (T) {
            if (!T) return { ok: false, text: "", err: "Tesseract.js 加载失败（可能因网络或页面 CSP 限制）" };
            return T.recognize(imgDataUrl, 'chi_sim', { logger: function () { } }).then(function (r) {
                return { ok: true, text: (r.data && r.data.text) || "" };
            }).catch(function (e) { return { ok: false, text: "", err: "Tesseract 识别失败：" + e }; });
        });
    }
    // 把 OCR 文本解析成 题干 + A/B/C/D 选项
    function parseQuestionOptions(text) {
        var lines = String(text).split(/\r?\n/).map(function (l) { return l.replace(/^\s+|\s+$/g, ""); }).filter(Boolean);
        var choices = [], qLines = [];
        var re = /^([A-Da-d])[\s、.．:：)）]+(.*)$/;
        for (var i = 0; i < lines.length; i++) {
            var m = lines[i].match(re);
            if (m) choices.push({ letter: m[1].toUpperCase(), text: m[2].trim() });
            else qLines.push(lines[i]);
        }
        if (!choices.length) {  // 退化：同行多选项 "A.xx B.xx C.xx D.xx"
            var inline = String(text).match(/([A-D])[\s、.．:：)）]?([^A-D]+?)(?=[A-D][\s、.．:：)）]|$)/g);
            if (inline) inline.forEach(function (seg) {
                var mm = seg.match(/^([A-D])[\s、.．:：)）]?(.*)$/);
                if (mm) choices.push({ letter: mm[1], text: mm[2].trim() });
            });
        }
        return { question: qLines.join(" ").trim(), choices: choices };
    }
    // 定位题目块（与 jjCollectQuestions 同策略）
    function jjGetQuestionContainers() {
        var containers = [];
        var t1 = document.querySelectorAll("table[class='tablestyle']");
        Array.prototype.forEach.call(t1, function (e) { containers.push(e); });
        if (!containers.length) {
            var sels = [".question", ".exam-question", ".topic", ".q_item", ".question-item", ".test_table", ".exam_table", "form table", ".topic-list li", ".question-list li", ".cour-list li"];
            sels.forEach(function (s) {
                var els = document.querySelectorAll(s);
                Array.prototype.forEach.call(els, function (e) { containers.push(e); });
            });
        }
        return containers;
    }
    // 扫描某题块内的可点选项（与 parseChoices 同逻辑）
    function jjScanChoicesIn(c) {
        var labels = c.getElementsByTagName("label");
        var arr = [];
        for (var i = 0; i < labels.length; i++) {
            var txt = labels[i].innerText || "";
            var m = txt.match(/^([A-Z])[、.\s]+(.*)/);
            var letter = m ? m[1] : String.fromCharCode("A".charCodeAt(0) + i);
            arr.push({ letter: letter, text: m ? m[2].trim() : txt.trim(), el: labels[i] });
        }
        if (!arr.length) {
            var inputs = c.querySelectorAll("input[type=radio],input[type=checkbox]");
            Array.prototype.forEach.call(inputs, function (inp, i) {
                var lab = inp.closest ? inp.closest("label") : null;
                var txt = lab ? (lab.innerText || "") : (inp.getAttribute("value") || "");
                arr.push({ letter: String.fromCharCode("A".charCodeAt(0) + i), text: txt.trim(), el: inp });
            });
        }
        return arr;
    }
    // 在指定题块勾选某字母对应的选项
    function applyAnswerToPage(qIndex, letter) {
        var containers = jjGetQuestionContainers();
        var c = containers[qIndex];
        if (!c) { window.debugLog("⚠️ 未找到第 " + (qIndex + 1) + " 题的题块，请核对题号"); return false; }
        var choices = jjScanChoicesIn(c);
        var target = choices.filter(function (x) { return x.letter === letter; })[0];
        if (!target && choices.length) target = choices[letter ? letter.charCodeAt(0) - 65 : 0];
        if (target && target.el) {
            try { target.el.click(); } catch (e) { window.debugLog("⚠️ 勾选失败：" + e); return false; }
            window.debugLog("✅ 已在第 " + (qIndex + 1) + " 题勾选 " + letter + "：" + (target.text || "").slice(0, 30));
            return true;
        }
        window.debugLog("⚠️ 第 " + (qIndex + 1) + " 题未找到选项 " + letter);
        return false;
    }
    function showOcrPreview(text, parsed) {
        var el = document.getElementById("jj-ocr-preview");
        if (!el) return;
        el.classList.remove("jj-hidden");
        var html = "<div style='font-weight:600;margin-bottom:4px'>识别题干：" + escapeHtml((parsed.question || "(空)").slice(0, 200)) + "</div>";
        html += (parsed.choices.length ? parsed.choices.map(function (c) { return c.letter + "、" + escapeHtml((c.text || "").slice(0, 60)); }).join("<br>") : "（未解析到选项，请检查截图清晰度）");
        el.innerHTML = html;
    }
    // 在元素祖先里找题块（与 jjGetQuestionContainers 同策略）
    function findQuestionContainer(el) {
        if (!el || !el.parentElement) return null;
        var cur = el, guard = 0;
        while (cur && guard++ < 10) {
            if (cur.matches && (cur.matches("table[class='tablestyle']") || cur.matches(".question,.exam-question,.topic,.q_item,.question-item,.test_table,.exam_table,.cour-list li,.question-list li"))) return cur;
            cur = cur.parentElement;
        }
        return null;
    }
    function containerIndex(c) {
        if (!c) return 0;
        var all = jjGetQuestionContainers();
        var i = all.indexOf(c);
        return i >= 0 ? i : 0;
    }

    // 主流程：OCR → 解析 → AI 选答案 → 勾选（→ 自动提交）。dataUrl 为题图，qIndex 为题块下标（0 起）
    function runOcrPipeline(dataUrl, qIndex) {
        if (!aiReady()) { window.debugLog("⚠️ 请先在上方「AI 设置」配置 AI Key（如 DeepSeek / 阿里云 / 智谱 Key，国内可直连），OCR 需要 AI 来选答案"); return; }
        var engine = localStorage.getItem("华医OCREngine") || "ocrspace";
        if (engine === "ocrspace" && !(localStorage.getItem("华医OCRKey") || "").trim()) {
            engine = "tesseract";
            window.debugLog("ℹ️ 未填 OCR.space Key，自动改用本地 Tesseract");
        }
        window.debugLog("🔍 正在 OCR 识别（" + (engine === "ocrspace" ? "OCR.space 云端" : "Tesseract 本地") + "）…");
        var p = engine === "ocrspace" ? ocrSpace(dataUrl) : ocrTesseract(dataUrl);
        p.then(function (o) {
            if (!o.ok) { window.debugLog("❌ OCR 失败：" + o.err); return; }
            var parsed = parseQuestionOptions(o.text);
            showOcrPreview(o.text, parsed);
            if (parsed.choices.length < 2) {
                window.debugLog("⚠️ 未从截图解析到足够选项（需 A/B/C/D），请检查图片清晰度；识别原文：\n" + o.text.slice(0, 300));
                return;
            }
            window.debugLog("🤖 OCR 得到 " + parsed.choices.length + " 个选项，调用 AI 选答案…");
            aiAnswer(parsed.question, parsed.choices).then(function (res) {
                if (!res.letter) { window.debugLog("❌ AI 未能给出答案：" + (res.message || "未知")); return; }
                var ch = parsed.choices.filter(function (c) { return c.letter === res.letter; })[0];
                window.debugLog("✅ AI 选择：" + res.letter + "（" + (ch ? ch.text : "").slice(0, 40) + "）");
                var ok = applyAnswerToPage(qIndex, res.letter);
                if (ok && localStorage.getItem("华医OCRAutoSubmit") === "1") {
                    setTimeout(function () {
                        var sb = document.querySelector("#btn_submit");
                        if (sb) { sb.click(); window.debugLog("📤 已自动提交试卷"); }
                        else window.debugLog("⚠️ 未找到提交按钮 #btn_submit，请手动提交");
                    }, 900);
                }
            });
        });
    }

    // 上传/粘贴图片方式：按手动「题号」定位
    function doOcrAnswer() {
        if (!pendingOcrImage) { window.debugLog("⚠️ 请先选择或 Ctrl+V 粘贴一张题目截图"); return; }
        var qIndex = Math.max(0, (parseInt(localStorage.getItem("华医OCRQIndex") || "1", 10) || 1) - 1);
        runOcrPipeline(pendingOcrImage, qIndex);
    }

    // 遮罩框选：在页面上拖拽框选题目区域 → 截图该区域 → OCR → AI 选答案 → 自动作答
    function startMaskScan() {
        if (!aiReady()) { window.debugLog("⚠️ 请先配置 AI Key（如 DeepSeek / 阿里云 / 智谱 Key，国内可直连），遮罩扫描需要 AI 选答案"); return; }
        var overlay = document.createElement("div");
        overlay.id = "jj-mask-layer";
        overlay.style.cssText = "position:fixed;inset:0;z-index:2147483600;cursor:crosshair;background:rgba(8,16,32,.32);user-select:none;";
        var box = document.createElement("div");
        box.style.cssText = "position:absolute;border:2px dashed #ffb347;background:rgba(255,179,71,.12);display:none;box-sizing:border-box;";
        overlay.appendChild(box);
        var tip = document.createElement("div");
        tip.textContent = "📷 拖拽框选题目区域（含选项），松开即扫描 · 按 Esc 取消";
        tip.style.cssText = "position:absolute;top:14px;left:50%;transform:translateX(-50%);padding:8px 14px;background:rgba(0,0,0,.72);color:#ffe;border-radius:10px;font-size:13px;white-space:nowrap;";
        overlay.appendChild(tip);
        document.body.appendChild(overlay);

        var sx = 0, sy = 0, dragging = false;
        function onDown(e) {
            dragging = true; sx = e.clientX; sy = e.clientY;
            box.style.display = "block";
            box.style.left = sx + "px"; box.style.top = sy + "px";
            box.style.width = "0px"; box.style.height = "0px";
            e.preventDefault();
        }
        function onMove(e) {
            if (!dragging) return;
            var x = Math.min(e.clientX, sx), y = Math.min(e.clientY, sy);
            var w = Math.abs(e.clientX - sx), h = Math.abs(e.clientY - sy);
            box.style.left = x + "px"; box.style.top = y + "px";
            box.style.width = w + "px"; box.style.height = h + "px";
        }
        function onUp(e) {
            if (!dragging) return;
            dragging = false;
            var rect = { x: parseInt(box.style.left, 10), y: parseInt(box.style.top, 10), w: parseInt(box.style.width, 10), h: parseInt(box.style.height, 10) };
            cleanup();
            if (rect.w < 12 || rect.h < 12) { if (overlay.parentNode) overlay.parentNode.removeChild(overlay); window.debugLog("⚠️ 框选区域太小，已取消"); return; }
            captureRegion(rect, overlay, tip);
        }
        function onKey(e) { if (e.key === "Escape") { cleanup(); if (overlay.parentNode) overlay.parentNode.removeChild(overlay); window.debugLog("ℹ️ 已取消遮罩扫描"); } }
        function cleanup() {
            document.removeEventListener("mousedown", onDown, true);
            document.removeEventListener("mousemove", onMove, true);
            document.removeEventListener("mouseup", onUp, true);
            document.removeEventListener("keydown", onKey, true);
        }
        document.addEventListener("mousedown", onDown, true);
        document.addEventListener("mousemove", onMove, true);
        document.addEventListener("mouseup", onUp, true);
        document.addEventListener("keydown", onKey, true);
    }

    // 直接从 DOM 读取框选区域的题干与选项（无需 OCR）
    function parseDomText(root) {
        if (!root) return null;
        var raw = (root.innerText || root.textContent || "").trim();
        if (!raw) return null;
        var q = "", ch = [];
        var qEl = root.querySelector(".question-text") || root.querySelector("[class*='stem']");
        if (qEl) q = (qEl.innerText || "").trim();
        var optEls = root.querySelectorAll(".option-item,[class*='option-item'],[class*='option-list'] > div");
        if (optEls.length >= 2) {
            for (var i = 0; i < optEls.length; i++) {
                var t = (optEls[i].innerText || "").trim();
                if (!t || t.length > 400) continue;
                var mm = t.match(/^([A-Za-z])[、.．)）\s：:]?/);
                var letter = mm ? mm[1].toUpperCase() : String(letterFromText(t, i) || "").toUpperCase();
                if (!letter) letter = String.fromCharCode(65 + i);
                ch.push({ letter: letter, text: stripLetter(t), el: optEls[i], label: optEls[i] });
            }
        }
        if (ch.length < 2) {
            var lines = raw.split(/\n+/).map(function (s) { return s.trim(); }).filter(Boolean);
            for (var j = 0; j < lines.length; j++) {
                var m2 = lines[j].match(/^([A-Za-z])[、.．)）\s：:](.+)$/);
                if (m2) ch.push({ letter: m2[1].toUpperCase(), text: m2[2].trim(), el: null, label: null });
                else if (!q && lines[j].length > 8) q = lines[j];
            }
            if (!q && lines.length) q = lines[0];
        }
        if (!q) q = raw.split(/\n+/)[0] || "";
        if (ch.length < 2) return null;
        return { question: q, choices: ch, raw: raw };
    }
    // 用解析结果问 AI 并勾选（优先点解析到的选项元素，否则按题号回落）
    function answerFromParsed(parsed, qIndex) {
        if (!aiReady()) { window.debugLog("⚠️ 请先配置 AI Key（DeepSeek / 阿里云 / 智谱，国内可直连）"); return; }
        aiAnswer(parsed.question, parsed.choices).then(function (res) {
            if (!res.letter) { window.debugLog("❌ AI 未能给出答案：" + (res.message || "未知")); return; }
            var ch = parsed.choices.filter(function (c) { return c.letter === res.letter; })[0];
            window.debugLog("✅ AI 选择：" + res.letter + "（" + (ch ? ch.text : "").slice(0, 40) + "）");
            var ok = false;
            if (ch && (ch.label || ch.el)) {
                try { (ch.label || ch.el).click(); ok = true; } catch (e) { ok = false; }
            }
            if (!ok) ok = applyAnswerToPage(qIndex, res.letter);
            if (ok && localStorage.getItem("华医OCRAutoSubmit") === "1") {
                setTimeout(function () {
                    var sb = document.querySelector("#btn_submit") || findHdblSubmit();
                    if (sb) { sb.click(); window.debugLog("📤 已自动提交"); }
                    else window.debugLog("⚠️ 未找到提交按钮，请手动提交");
                }, 900);
            }
        });
    }

    function captureRegion(rect, overlay, tip) {
        var cx = rect.x + rect.w / 2, cy = rect.y + rect.h / 2;
        var hit = document.elementFromPoint(cx, cy);
        var container = findQuestionContainer(hit);
        var target = container || hit;
        var qIndex = containerIndex(container);
        // 没找到题块时向上爬几层，确保能读到整道题
        if (!container) {
            var up = hit, g = 0;
            while (up && g++ < 6) {
                var lines0 = (up.innerText || "").split(/\n+/);
                var cnt0 = 0;
                for (var z = 0; z < lines0.length; z++) { if (/^[A-Za-z][、.．)）\s]/.test(lines0[z].trim())) cnt0++; }
                if (cnt0 >= 2) { target = up; break; }
                up = up.parentElement;
            }
        }
        // ✅ 首选：直接读取框选区域的页面文字（免 OCR，规避 CSP/跨域，文字题 100% 准确）
        var domParsed = parseDomText(target);
        if (domParsed && domParsed.choices.length >= 2) {
            if (overlay.parentNode) overlay.parentNode.removeChild(overlay);
            window.debugLog("📖 已直接读取框选区域文字（免 OCR），识别到 " + domParsed.choices.length + " 个选项，调用 AI 选答案…");
            showOcrPreview(domParsed.raw || "", domParsed);
            answerFromParsed(domParsed, qIndex);
            return;
        }
        if (typeof html2canvas !== "function") {
            if (overlay.parentNode) overlay.parentNode.removeChild(overlay);
            window.debugLog("ℹ️ 该区域未读到可识别文字（可能是纯图片题），但截图库 html2canvas 未加载（CDN 被拦截）。请改用「选择题目图片」上传，或填 OCR.space Key 后用云端识别。");
            return;
        }
        tip.textContent = "📷 正在截取选中区域…";
        html2canvas(target, { scale: 2, useCORS: true, allowTaint: false, backgroundColor: null, logging: false }).then(function (canvas) {
            if (overlay.parentNode) overlay.parentNode.removeChild(overlay);
            var dataUrl;
            try { dataUrl = canvas.toDataURL("image/png"); }
            catch (err) {
                window.debugLog("❌ 截图被跨域图片污染（tainted），无法读取像素。该题图片可能禁止跨域：建议改用「选择题目图片」上传该图，或用系统截图后 Ctrl+V 粘贴。");
                return;
            }
            window.debugLog("📸 已截取第 " + (qIndex + 1) + " 题区域，开始 OCR…");
            runOcrPipeline(dataUrl, qIndex);
        }).catch(function (err) {
            if (overlay.parentNode) overlay.parentNode.removeChild(overlay);
            window.debugLog("❌ 区域截图失败：" + (err && err.message ? err.message : err));
        });
    }

    // ===================== AI 智能答题（免费额度 OpenAI 兼容接口） =====================
    function aiReady() {
        return localStorage.getItem("华医AION") !== "0" && !!localStorage.getItem("华医AIKey");
    }
    // 调用免费大模型作答。返回 {letter, status, message}；letter 为 A/B/C/D 或 null，message 携带失败原因（含 HTTP 状态/平台报错），便于诊断
    var lastAIError = "";
    var lastAIWarnMsg = "";
    function aiAnswer(questionText, choices) {
        return new Promise(function (resolve) {
            if (!aiReady()) { resolve({ letter: null, status: -1, message: "AI 未启用或未填 Key" }); return; }
            var key = (localStorage.getItem("华医AIKey") || "").trim();
            var base = (localStorage.getItem("华医AIBase") || "https://open.bigmodel.cn/api/paas/v4").trim();
            var model = localStorage.getItem("华医AIModel") || "glm-4-flash";
            var opts = choices.map(function (c) { return c.letter + "、" + c.text; }).join("\n");
            var sys = "你是医学继续教育考试答题助手。下面是一道单选题，请直接给出正确选项的字母（A/B/C/D 之一），不要任何解释、标点或多余文字。";
            var user = "题目：" + questionText + "\n选项：\n" + opts + "\n请只输出正确选项字母：";
            var body = JSON.stringify({
                model: model,
                messages: [
                    { role: "system", content: sys },
                    { role: "user", content: user }
                ],
                temperature: 0.1,
                max_tokens: 4,
                stream: false
            });
            var url = base.replace(/\/+$/, "") + "/chat/completions";
            try {
                GM_xmlhttpRequest({
                    method: "POST",
                    url: url,
                    headers: { "Content-Type": "application/json", "Authorization": "Bearer " + key },
                    data: body,
                    timeout: 25000,
                    onload: function (r) {
                        try {
                            var j = JSON.parse(r.responseText);
                            if (r.status !== 200 || !j.choices || !j.choices[0]) {
                                var raw = (j && (j.message || (j.error && j.error.message))) || ("HTTP " + r.status);
                                var tip = "";
                                if (r.status === 403) tip = "（403 多为该服务对您所在地区/IP 限制，或 Key 无效；国内推荐换 DeepSeek 官方 / 阿里云百炼 / 智谱 GLM 等可直连服务，或给 SiliconFlow 充值）";
                                else if (r.status === 401) tip = "（401 多为 Key 无效，请检查 Key）";
                                else if (r.status === 402) tip = "（402 余额不足，请充值）";
                                else if (r.status === 404) tip = "（404 模型名不存在）";
                                var msg = raw + " " + tip;
                                lastAIError = msg;
                                resolve({ letter: null, status: r.status, message: msg });
                                return;
                            }
                            var txt = String(j.choices[0].message.content || "").trim();
                            // 优先匹配"答案/选"后的字母；退化时只在合法选项字母集合内取首个，避免命中单词首字母
                            var m = txt.match(/(?:答案|正确选项|选择|选)\s*[:：]?\s*([A-Za-z])/i) || txt.match(/\b([A-Za-z])\b/);
                            var letter = m ? m[1].toUpperCase() : null;
                            if (letter && choices.some(function (c) { return c.letter === letter; })) { resolve({ letter: letter, status: 200, message: "" }); return; }
                            var any = (txt.match(/[A-Za-z]/g) || []).map(function (x) { return x.toUpperCase(); })
                                .filter(function (x) { return choices.some(function (c) { return c.letter === x; }); });
                            if (any.length) { resolve({ letter: any[0], status: 200, message: "" }); return; }
                            lastAIError = "返回内容无有效选项字母：" + txt.slice(0, 50);
                            resolve({ letter: null, status: 200, message: lastAIError });
                        } catch (e) {
                            lastAIError = "响应解析失败：" + String(r.responseText || "").slice(0, 100);
                            resolve({ letter: null, status: r.status, message: lastAIError });
                        }
                    },
                    onerror: function () { lastAIError = "网络/跨域错误（onerror），请检查 @connect 或网络"; resolve({ letter: null, status: 0, message: lastAIError }); },
                    ontimeout: function () { lastAIError = "请求超时（25s）"; resolve({ letter: null, status: 0, message: lastAIError }); }
                });
            } catch (e) { lastAIError = "发起请求异常：" + e; resolve({ letter: null, status: 0, message: lastAIError }); }
        });
    }
    // 多选题：一次返回多个正确选项字母（如 "A,C,D"），返回 {letters:[...], message}
    function aiAnswerMulti(questionText, choices) {
        return new Promise(function (resolve) {
            if (!aiReady()) { resolve({ letters: [], message: "AI 未启用或未填 Key" }); return; }
            var key = (localStorage.getItem("华医AIKey") || "").trim();
            var base = (localStorage.getItem("华医AIBase") || "https://open.bigmodel.cn/api/paas/v4").trim();
            var model = localStorage.getItem("华医AIModel") || "glm-4-flash";
            var opts = choices.map(function (c) { return c.letter + "、" + c.text; }).join("\n");
            var sys = "你是医学继续教育考试答题助手。下面是一道多选题，请直接给出所有正确选项的字母，用英文逗号分隔（如 A,C,D），不要任何解释或多余文字。";
            var user = "题目：" + questionText + "\n选项：\n" + opts + "\n请只输出所有正确选项字母（逗号分隔）：";
            var body = JSON.stringify({
                model: model,
                messages: [{ role: "system", content: sys }, { role: "user", content: user }],
                temperature: 0.1, max_tokens: 16, stream: false
            });
            var url = base.replace(/\/+$/, "") + "/chat/completions";
            try {
                GM_xmlhttpRequest({
                    method: "POST", url: url,
                    headers: { "Content-Type": "application/json", "Authorization": "Bearer " + key },
                    data: body, timeout: 25000,
                    onload: function (r) {
                        try {
                            var j = JSON.parse(r.responseText);
                            if (r.status !== 200 || !j.choices || !j.choices[0]) {
                                var msg = (j && (j.message || (j.error && j.error.message))) || ("HTTP " + r.status);
                                resolve({ letters: [], message: msg }); return;
                            }
                            var txt = String(j.choices[0].message.content || "").trim().toUpperCase();
                            var all = (txt.match(/[A-Z]/g) || []);
                            var letters = [];
                            all.forEach(function (x) {
                                if (letters.indexOf(x) === -1 && choices.some(function (c) { return c.letter === x; })) letters.push(x);
                            });
                            if (letters.length) { resolve({ letters: letters, message: "" }); return; }
                            resolve({ letters: [], message: "多选返回无有效字母：" + txt.slice(0, 40) });
                        } catch (e) { resolve({ letters: [], message: "响应解析失败" }); }
                    },
                    onerror: function () { resolve({ letters: [], message: "网络/跨域错误" }); },
                    ontimeout: function () { resolve({ letters: [], message: "请求超时" }); }
                });
            } catch (e) { resolve({ letters: [], message: "发起请求异常：" + e }); }
        });
    }
    // 单题作答决策：优先 AI（已配置且推荐项不在排除列表），否则回落 记录答案 → 排除错项兜底
    // ctx = { qRightAnswer, qWrongHistory }（对象引用，内部对 wrong 的修改会写回）
    // 返回 {pick:{letter,text,el}|null, src:"AI 智能"|"记录答案"|"排除兜底"|"首答兜底"}
    async function jjPickAnswer(qRaw, q, choices, ctx) {
        var wrongs = ctx.qWrongHistory[q] || [];
        // 1) AI 优先（免费额度 OpenAI 兼容接口）；拒绝"已知错误项"，保证收敛
        if (aiReady()) {
            var aiRes = await aiAnswer(qRaw, choices);
            if (aiRes.letter) {
                var aiChoice = choices.filter(function (c) { return c.letter === aiRes.letter; })[0];
                if (aiChoice && wrongs.indexOf(aiChoice.letter) === -1) {
                    return { pick: aiChoice, src: "AI 智能" };
                }
            } else if (aiRes.message && aiRes.message !== lastAIWarnMsg) {
                lastAIWarnMsg = aiRes.message;
                debugLog("⚠️ AI 调用未成功：" + aiRes.message + "（将回落记录/排除作答）");
            }
        }
        // 2) 已记录正确答案
        if (ctx.qRightAnswer.hasOwnProperty(q)) {
            var rightText = ctx.qRightAnswer[q];
            var matched = choices.filter(function (c) { return c.text == rightText; })[0]
                || choices.filter(function (c) { return c.text.indexOf(rightText) !== -1 || rightText.indexOf(c.text) !== -1; })[0];
            if (matched) return { pick: matched, src: "记录答案" };
        }
        // 3) 兜底：排除已知错项后选第一个（仍错则由结果页重考并补充排除，直到通过）
        var cand = choices.filter(function (c) { return wrongs.indexOf(c.letter) === -1; })[0];
        if (!cand) { ctx.qWrongHistory[q] = []; cand = choices[0]; }
        return { pick: cand, src: (wrongs.length ? "排除兜底" : "首答兜底") };
    }

    // ===================== 答题增强辅助函数 =====================
    function normalizeQuestion(text) {
        if (!text) return "";
        return String(text)
            .replace(/^\s*\d+[、.\s]+/, "")          // 去掉前导题号 "1、"
            .replace(/[（(].*?[）)]/g, "")           // 去掉括号及其内容
            .replace(/[【】\[\]\(\)（）]/g, "")      // 去掉各种括号符号
            .replace(/[\s\u00A0\u200B]/g, "")       // 去掉所有空白
            .trim();
    }
    // ===================== hdbl SPA 答题页适配（通用解析 + 探针） =====================
    function closestEl(el, sel) {
        while (el && el !== document) {
            if (el.matches && el.matches(sel)) return el;
            el = el.parentElement;
        }
        return null;
    }
    function letterFromText(t, i) {
        if (!t) return String.fromCharCode(65 + i);
        var m = t.match(/^[A-Za-z][、.．)）\s]/);
        if (m) return m[0][0].toUpperCase();
        return String.fromCharCode(65 + i);
    }
    function stripLetter(t) {
        if (!t) return "";
        return t.replace(/^[A-Za-z][、.．)）\s]+/, "").trim();
    }
    function findQuestionText(n) {
        // hdbl 实测：题干在 .question-text（span），优先取它；.question-title 是"问题1"这类小节标题需跳过
        var qt = n.querySelector(".question-text,[class*='stem'],[class*='question-text']");
        if (qt) {
            var t0 = (qt.innerText || qt.getAttribute("title") || "").trim();
            if (t0.length > 4) return t0;
        }
        var cand = n.querySelector(".q_name,.question-title,.topic-title,.title,.stem,[class*='title'],[class*='name']");
        if (cand) {
            var t = (cand.getAttribute("title") || cand.innerText || "").trim();
            // 跳过"问题1/问题2"这类小节标题，它不是题目
            if (t.length > 4 && !/^问题\s*\d+$/.test(t.trim())) return t;
        }
        var best = "";
        var all = n.querySelectorAll("div,p,span,li,dt,h3,h4,h5");
        if (all.forEach) all.forEach(function (e) {
            var t = (e.innerText || "").trim();
            if (t.length > best.length && t.length > 10) best = t;
        });
        return best;
    }
    function findChoices(n) {
        var ch = [];
        var inputs = n.querySelectorAll("input[type='radio'],input[type='checkbox']");
        if (inputs.length >= 2) {
            for (var i = 0; i < inputs.length; i++) {
                var inp = inputs[i];
                var label = (inp.id ? document.querySelector("label[for='" + inp.id + "']") : null) || closestEl(inp, "label") || inp.parentElement;
                var t = (label ? label.innerText : (inp.value || "")) || "";
                ch.push({ letter: letterFromText(t, i), text: stripLetter(t), el: inp, label: label });
            }
            return ch;
        }
        var labels = n.querySelectorAll("label");
        if (labels.length >= 2) {
            for (var j = 0; j < labels.length; j++) {
                var lt = labels[j].innerText || "";
                ch.push({ letter: letterFromText(lt, j), text: stripLetter(lt), el: labels[j], label: labels[j] });
            }
            return ch;
        }
        var items = n.querySelectorAll("li,div,span,p,button,a");
        if (items.forEach) items.forEach(function (it, k) {
            var tt = it.innerText || "";
            if (/^[A-Za-z][、.．)）\s]/.test(tt)) {
                ch.push({ letter: tt[0].toUpperCase(), text: stripLetter(tt), el: it, label: it });
            }
        });
        return ch;
    }
    // hdbl 选项专属解析：选项 DOM 未知（探针被截断），多套选择器兜底
    function findHdblChoices(n) {
        var ch = [];
        var inputs = n.querySelectorAll("input[type='radio'],input[type='checkbox']");
        if (inputs.length >= 2) {
            for (var i = 0; i < inputs.length; i++) {
                var inp = inputs[i];
                var label = (inp.id ? document.querySelector("label[for='" + inp.id + "']") : null) || closestEl(inp, "label") || inp.parentElement;
                var t = (label ? label.innerText : (inp.value || "")) || "";
                ch.push({ letter: letterFromText(t, i), text: stripLetter(t), el: inp, label: label });
            }
            return ch;
        }
        var items = n.querySelectorAll("[class*='option'],[class*='choice'],[class*='answer'],[class*='item'],[class*='opt']");
        if (items.length >= 2) {
            for (var j = 0; j < items.length; j++) {
                var tt = (items[j].innerText || "").trim();
                if (/^(解析|提交|上一题|下一题|确定|收起)$/.test(tt)) continue;
                ch.push({ letter: letterFromText(tt, j), text: stripLetter(tt), el: items[j], label: items[j] });
            }
            if (ch.length >= 2) return ch;
        }
        var any = n.querySelectorAll("li,div,span,p,button,a");
        if (any.forEach) any.forEach(function (it, k) {
            var tt2 = (it.innerText || "").trim();
            if (/^[A-Za-z][、.．)）\s]/.test(tt2)) ch.push({ letter: tt2[0].toUpperCase(), text: stripLetter(tt2), el: it, label: it });
        });
        return ch;
    }
    function extractHdblQuestions() {
        var useHdbl = !!document.querySelector(".question-container");
        var sels = useHdbl
            ? ".question-container"
            : "[class*='question'],[class*='problem'],[class*='topic'],[class*='exam'],[class*='paper'],[class*='quiz'],[class*='choice'],[class*='judge'],[class*='item'],[class*='subject'],[class*='option'],[id*='question']";
        var nodes = document.querySelectorAll(sels);
        var blocks = [], seen = (typeof Set !== "undefined") ? new Set() : {};
        for (var i = 0; i < nodes.length; i++) {
            var n = nodes[i];
            if (seen instanceof Set ? seen.has(n) : seen[n]) continue;
            if (seen instanceof Set) seen.add(n); else seen[n] = 1;
            var txt;
            if (useHdbl) {
                var q = n.querySelector(".question-text");
                txt = q ? (q.innerText || "").trim() : findQuestionText(n);
            } else {
                txt = findQuestionText(n);
            }
            var ch = useHdbl ? findHdblChoices(n) : findChoices(n);
            var badgeEl = n.querySelector(".question-type-badge,[class*='type-badge'],[class*='qtype']");
            var badge = badgeEl ? (badgeEl.innerText || "").trim() : "";
            if (txt && ch.length >= 2) blocks.push({ text: txt, choices: ch, el: n, badge: badge });
        }
        // 去除被包含（父子重复）的块
        blocks = blocks.filter(function (b) {
            return !blocks.some(function (o) { return o !== b && b.text.indexOf(o.text) >= 0 && o.text.length > b.text.length; });
        });
        return blocks;
    }
    function findButtonByText(re) {
        var els = document.querySelectorAll("button,a,input[type=button],input[type=submit],[role=button]");
        for (var i = 0; i < els.length; i++) {
            var t = (els[i].innerText || els[i].value || els[i].getAttribute("title") || "").trim();
            if (re.test(t)) return els[i];
        }
        return null;
    }
    // 取元素“自身”的文字（只看直接文本节点），避免把整个容器的长文本当成按钮名
    function ownText(el) {
        if (!el) return "";
        var s = "";
        for (var i = 0; i < el.childNodes.length; i++) {
            if (el.childNodes[i].nodeType === 3) s += el.childNodes[i].textContent;
        }
        s = (s || "").trim();
        if (!s) s = (el.innerText || el.value || el.getAttribute("title") || "").trim();
        return s;
    }
    // hdbl 等 SPA 的按钮常是 div/span（非 button/a），需强查找
    function findHdblSubmit() {
        var RE = /提交|交卷|下一题|下一页|下一问|下一节|确定|确认|保存答案|继续学习|下一步|完成/;
        var EX = /^(提交|交卷|确定|确认|下一题|下一页|下一步|保存|提交答案|完成学习|完成)$/;
        var cands = [];
        var els = document.querySelectorAll("button,a,input[type=button],input[type=submit],[role=button],div,span,li,p");
        for (var i = 0; i < els.length; i++) {
            var el = els[i];
            if (el.closest && el.closest("#jj-panel")) continue;
            var vis = el.offsetParent || el.offsetHeight || el.getClientRects().length;
            if (!vis) continue;
            var t = ownText(el);
            if (!t) continue;
            if (EX.test(t)) cands.push({ el: el, t: t, score: 0 });
            else if (t.length <= 10 && RE.test(t)) cands.push({ el: el, t: t, score: 1 });
        }
        if (!cands.length) return null;
        cands.sort(function (a, b) { return a.score - b.score || a.t.length - b.t.length; });
        return cands[0].el;
    }
    // 提交后可能弹确认框（确定/确认提交）
    function findHdblConfirm() {
        var els = document.querySelectorAll(".el-message-box__wrapper button,.el-dialog button,.van-dialog__confirm,[class*='modal'] button,[class*='dialog'] button,button,a,div,span");
        for (var i = 0; i < els.length; i++) {
            var el = els[i];
            if (el.closest && el.closest("#jj-panel")) continue;
            var t = ownText(el);
            if (/^(确定|确认|确认提交|是|OK|好的|继续)$/.test(t)) return el;
        }
        return null;
    }
    function dumpHdblButtons() {
        var out = [];
        var els = document.querySelectorAll("button,a,div,span,li");
        for (var i = 0; i < els.length && out.length < 120; i++) {
            var el = els[i];
            if (el.closest && el.closest("#jj-panel")) continue;
            if (!el.offsetParent && !el.offsetHeight) continue;
            var t = ownText(el);
            if (!t || t.length > 12) continue;
            if (el.children.length > 2) continue;
            out.push("<" + el.tagName.toLowerCase() + " class=\"" + (el.className || "") + "\">" + t);
        }
        var txt = "【hdbl 按钮探针】\n" + out.join("\n");
        debugLog(txt);
        try { if (navigator.clipboard && navigator.clipboard.writeText) navigator.clipboard.writeText(txt); } catch (e) {}
    }
    function dumpHdblDom() {
        var area = document.querySelector("[class*='question'],[class*='problem'],[class*='paper'],[class*='exam'],[class*='quiz'],[id*='question']") || document.body;
        var html = area.outerHTML || "";
        if (html.length > 30000) html = html.slice(0, 30000) + "\n...(已截断)";
        debugLog("🔍【hdbl 题目区 DOM 探针】\n" + html.replace(/></g, ">\n<"));
        try { console.log("【hdbl DOM probe】", area); } catch (e) {}
        try { if (navigator.clipboard && navigator.clipboard.writeText) navigator.clipboard.writeText(html); } catch (e) {}
        debugLog("📋 题目区 HTML 已尝试复制到剪贴板，可直接粘贴发给开发者校准");
    }
    function parseChoices(tbody) {
        var labels = tbody.getElementsByTagName("label");
        var arr = [];
        for (var i = 0; i < labels.length; i++) {
            var txt = labels[i].innerText || "";
            var m = txt.match(/^([A-Z])[、.\s]+(.*)/);
            if (m) {
                arr.push({ letter: m[1], text: m[2].trim(), index: i, el: labels[i] });
            } else {
                var letter = String.fromCharCode("A".charCodeAt(0) + i);
                arr.push({ letter: letter, text: txt.trim(), index: i, el: labels[i] });
            }
        }
        return arr;
    }
    function getLetterByText(q, text, map) {
        if (!q || !text) return null;
        var cm = (map && map[q]) || {};
        for (var letter in cm) {
            if (cm[letter] === text) return letter;
        }
        return null;
    }
    // 判分：必须排除「未通过/不通过/不及格」等否定表述，避免「考试未通过」被误判为通过
    function jjIsPass(res) {
        if (!res) return false;
        if (/未通过|不通过|未及格|不及格|失败|不合格|未合格/.test(res)) return false;
        return /考试通过|通过！|完成项目学习可以申请学分|成绩合格|合格/.test(res);
    }
    function parseResultPage() {
        var info = { pass: false, items: [] };
        var tipsEl = document.querySelector(".tips_text");
        var res = tipsEl ? tipsEl.innerText : "";
        info.pass = jjIsPass(res);

        // 多选择器兼容不同结果页结构
        var items = document.querySelectorAll(".state_cour_lis");
        if (items.length === 0) items = document.querySelectorAll(".exam-result-item, .question-result, .result-list li, .topic-list li, .cour-list");

        Array.prototype.forEach.call(items, function (item, idx) {
            var qEl = item.querySelector(".q_name, .question-title, .topic-title, p[title], dt, .tit, .exam-q");
            var question = "";
            if (qEl) question = qEl.getAttribute("title") || qEl.innerText;
            if (!question) {
                // 兜底：取第一个较长文本
                var ps = item.querySelectorAll("p, div");
                for (var i = 0; i < ps.length; i++) {
                    var t = ps[i].innerText || "";
                    if (t.length > 10) { question = t; break; }
                }
            }
            if (!question) return;

            var txt = item.innerText || "";
            var isWrong = false;

            // 通过图标判断对错
            var img = item.querySelector("img");
            if (img) {
                var src = (img.src || "").toLowerCase();
                isWrong = !/right|correct|bar_img|dui|yes|ok/.test(src);
            }
            // 通过文字再次确认
            if (/您的答案[：:]/.test(txt) && /错误|错|×|X/.test(txt)) isWrong = true;
            if (/正确答案[：:]/.test(txt) && !/您的答案/.test(txt)) isWrong = false;

            var userMatch = txt.match(/您的答案[：:]\s*([A-Z])[、.\s]+([^\n\r]+)/);
            var userLetter = userMatch ? userMatch[1] : null;
            var userText = userMatch ? userMatch[2].trim() : null;

            var rightMatch = txt.match(/正确答案[：:]\s*([A-Z])[、.\s]+([^\n\r]+)/);
            var rightLetter = rightMatch ? rightMatch[1] : null;
            var rightText = rightMatch ? rightMatch[2].trim() : null;

            info.items.push({
                index: idx,
                question: question,
                isWrong: isWrong,
                userLetter: userLetter,
                userText: userText,
                rightLetter: rightLetter,
                rightText: rightText
            });
        });

        return info;
    }
    function findRetryExamButton() {
        var keywords = ["重新考试", "再考一次", "重新答题", "重考", "再次考试", "再来一次"];
        // 优先精确匹配 input
        var btn = document.querySelector("input[type=button][value='重新考试']");
        if (btn) return btn;
        // 兜底：遍历 input/button/a 等可点击元素，按文本匹配
        var all = document.querySelectorAll("input, button, a, div[onclick], span[onclick]");
        for (var i = 0; i < all.length; i++) {
            var txt = (all[i].value || all[i].innerText || all[i].textContent || "").trim();
            for (var k = 0; k < keywords.length; k++) {
                if (txt.indexOf(keywords[k]) !== -1) return all[i];
            }
        }
        return null;
    }

    // ===================== 辅助函数 =====================
    function SaveAllAnwser() {
        var qAllAnswer = JSON.parse(localStorage.getItem(keyAllAnswer)) || {};
        var qRightAnswer = JSON.parse(localStorage.getItem(keyRightAnswer)) || {};
        var qTitle = JSON.parse(localStorage.getItem(keyThisTitle)) || "没有记录到章节名称";
        var qOldAnswer = qAllAnswer[qTitle] || {};
        for (var q in qRightAnswer) {
            qOldAnswer[q] = qRightAnswer[q];
        }
        qAllAnswer[qTitle] = qOldAnswer;
        if (qAllAnswer != null) {
            localStorage.setItem(keyAllAnswer, JSON.stringify(qAllAnswer));
        }
    }
    function LoadRightAnwser() {
        var qAllAnswer = JSON.parse(localStorage.getItem(keyAllAnswer)) || {};
        var qTitle = JSON.parse(localStorage.getItem(keyThisTitle)) || "没有记录到章节名称";
        if (qTitle == "没有记录到章节名称") return {};
        return qAllAnswer[qTitle] || {};
    }
    function saveRightAnwser() {
        var qRightAnswer = JSON.parse(localStorage.getItem(keyRightAnswer)) || {};
        var qTestAnswer = JSON.parse(localStorage.getItem(keyTestAnswer)) || {};
        var qWrongs = JSON.parse(localStorage.getItem(keyResult)) || {};
        for (var q in qTestAnswer) {
            if (!qWrongs.hasOwnProperty(q)) {
                qRightAnswer[q] = qTestAnswer[q];
            }
        }
        localStorage.removeItem(keyTestAnswer);
        if (qRightAnswer != null) {
            localStorage.setItem(keyRightAnswer, JSON.stringify(qRightAnswer));
        }
    }
    function addAnwserCopybtn() {
        var main = document.getElementById("main_div");
        if (!main) return;
        var alink = document.createElement("a");
        alink.innerHTML = '显示已记录答案';
        alink.style = btstyleB;
        alink.onclick = function (event) {
            var qAllAnswer = JSON.parse(localStorage.getItem(keyAllAnswer)) || {};
            var Aout = JSON.stringify(qAllAnswer, null, "\t");
            var out = document.getElementById("AnwserOut");
            if (out) {
                out.innerHTML = Aout;
            } else {
                var textout = document.createElement("textarea");
                textout.id = "AnwserOut";
                textout.innerHTML = Aout;
                textout.rows = 20; textout.cols = 30;
                main.parentNode.append(textout);
            }
        };
        main.parentNode.append(alink);
    }
    function DelAllAnwser() {
        var main = document.getElementById("main_div");
        if (!main) return;
        var alink = document.createElement("a");
        alink.innerHTML = '清除已记录答案';
        alink.style = btstyleB;
        alink.onclick = function (event) {
            var r = confirm("确定清除历史答案？!");
            if (r) localStorage.removeItem(keyAllAnswer);
        };
        main.parentNode.append(alink);
    }
    function skipVideo() {
        var oVideo = document.getElementsByTagName('video')[0];
        if (oVideo) oVideo.currentTime = oVideo.duration - 1;
    }
    // 视频自动静音：对所有 video 设 muted + 调播放器 API（polyv/cc），受「视频自动静音」开关控制
    function muteAllVideos() {
        if (localStorage.getItem("华医Mute") === "0") return;
        var vs = document.getElementsByTagName("video");
        for (var i = 0; i < vs.length; i++) {
            try { vs[i].muted = true; vs[i].volume = 0; } catch (e) { }
        }
        try { if (typeof player !== "undefined" && player && player.j2s_setVolume) player.j2s_setVolume(0); } catch (e) { }
        try { if (typeof cc_js_Player !== "undefined" && cc_js_Player && cc_js_Player.setVolume) cc_js_Player.setVolume(0); } catch (e) { }
    }
    // 原生查找「下一个未完成课程/课件」入口（不依赖 jQuery，单课程自动连播用，不受批量模式门控）
    function findNextCourseEntry() {
        var labels = ['未学习', '学习中', '待考试', '继续学习', '下一课程', '开始学习', '进入学习', '去学习'];
        var nodes = document.querySelectorAll('button, a, input[type="button"], .btn, span[onclick]');
        for (var i = 0; i < nodes.length; i++) {
            var t = (nodes[i].innerText || nodes[i].value || nodes[i].title || nodes[i].getAttribute('onclick') || '');
            for (var j = 0; j < labels.length; j++) {
                if (t.indexOf(labels[j]) !== -1) {
                    var row = nodes[i].closest ? nodes[i].closest('li, tr, .lis-inside-content, div[class*="lis"], td, .cour-list li') : nodes[i].parentNode;
                    if (row) {
                        var link = row.querySelector('a[href*="course_ware"], a[href*="cid="], a[href*="course.aspx"]');
                        if (link && link.href) return link;
                    }
                    if (nodes[i].href) return nodes[i];
                    return nodes[i];
                }
            }
        }
        // 兜底：页面上任何指向其他课件/项目的链接
        var links = document.querySelectorAll('a[href*="course_ware"], a[href*="cid="], a[href*="course.aspx"]');
        for (var k = 0; k < links.length; k++) {
            var href = links[k].href || '';
            if (href.indexOf('cwid=') !== -1 || href.indexOf('cid=') !== -1) return links[k];
        }
        return null;
    }
    function clickexam() {
        setTimeout(function () {
            var j = document.querySelector("#jrks");
            if (j) j.click();
        }, (Math.ceil(Math.random() * randomX)));
    }
    // ===================== 倍速功能已移除（v1.9） =====================
    function addinfo() {
        debugLog("ℹ️ 视频页面初始化完成，运行正常");
    }
    function cleanKeyStorage() {
        localStorage.removeItem(keyTest);
        localStorage.removeItem(keyResult);
        localStorage.removeItem(keyTestAnswer);
        localStorage.removeItem(keyRightAnswer);
    }
    function examherftest() {
        try {
            var jrks = document.getElementById("jrks");
            var hreftest = jrks ? jrks.attributes["disabled"] : undefined;
            var topPlay = document.querySelectorAll("i[id='top_play']")[0];
            if (!topPlay) return;
            var state = topPlay.parentNode.nextElementSibling.nextElementSibling.nextElementSibling.innerText;

            // 视频播完，考试入口已就绪
            if (state == "待考试") {
                if (!examClicked) {
                    examClicked = true;
                    debugLog("📌 视频播放完成，自动进入考试");
                    try { clickexam(); } catch (error) { }
                }
                return;
            }

            // 本章已完成或未锁考试入口 → 寻找下一个视频
            if (state == "已完成" || !hreftest) {
                debugLog("📌 本章已完成，寻找下一个视频");
                var lis = document.querySelectorAll("li[class='lis-inside-content']");
                var targetElements = document.querySelectorAll("i[id='top_play']");
                if (!targetElements[0]) return;
                var grandparentElement = targetElements[0].parentElement.parentElement;
                var index = Array.from(lis).findIndex(function (li) { return li === grandparentElement; });
                if (index + 2 <= lis.length) {
                    index += 2;
                    var h2 = document.querySelector("#top_body > div.video-container > div.page-container > div.page-content > ul > li:nth-child(" + index + ") > h2");
                    if (h2) h2.click();
                    setTimeout(function () {
                        try {
                            var b = document.evaluate("//button[contains(., '知道了')]", document, null, XPathResult.ANY_TYPE).iterateNext();
                            if (b) b.click();
                        } catch (e) { }
                    }, 2000);
                } else {
                    // 同课件无更多视频：自动进入下一个课程/课件（不依赖 jQuery）
                    var nextEl = findNextCourseEntry();
                    if (nextEl) {
                        try {
                            if (nextEl.href) { window.location.href = nextEl.href; }
                            else { nextEl.click(); }
                            debugLog("➡️ 自动进入下一课程/视频");
                        } catch (e) { debugLog("⚠️ 进入下一课程失败：" + (e && e.message)); }
                    } else {
                        debugLog("✅ 本课程全部视频已完成！");
                        clearInterval(clock);
                        onProjectComplete();
                    }
                }
            }
        } catch (e) {
            // 元素尚未就绪时静默重试
        }
    }
    function sleep(timeout) { return new Promise(function (resolve) { setTimeout(resolve, timeout); }); }
    function asynckillsendQuestion() {
        (async function () {
            var tries = 0;
            while ((!window.player || !window.player.sendQuestion) && tries < 600) {
                await sleep(20);
                tries++;
            }
            if (window.player && window.player.sendQuestion) {
                player.sendQuestion = function () { };
            }
        })();
    }
    function killsendQuestion2() { if (typeof (isInteraction) != "undefined") isInteraction = "off"; }
    function killsendQuestion3() {
        setInterval(async function () {
            try { if (hasJQ() && $('.pv-ask-head').length > 0) $(".pv-ask-skip").click(); } catch (err) { }
            try { if (hasJQ() && $('.signBtn').length > 0) $(".signBtn").click(); } catch (err) { }
            try { if (hasJQ() && $("button[onclick='closeProcessbarTip()']").length > 0) { $("button[onclick='closeBangZhu()']").click(); $("button[onclick='closeProcessbarTip()']").click(); } } catch (err) { }
            try { if (hasJQ() && $("button[class='btn_sign']").length > 0) $("button[class='btn_sign']").click(); } catch (err) { }
            try {
                var topPlay = document.querySelectorAll("i[id='top_play']")[0];
                if (!topPlay) return;
                var state = topPlay.parentNode.nextElementSibling.nextElementSibling.nextElementSibling.innerText;
                var v = document.querySelector('video');
                if (!v) return;
                if (v.paused && state != "已完成" && state != "待考试") {
                    if (hasJQ()) { $(v).get(0).play(); $(v).prop('muted', true); }
                    else { v.play().catch(function () { }); v.muted = true; }
                } else if (state == "已完成") {
                    try { v.pause(); } catch (e) { }
                }
            } catch (err) { }
        }, 10000);
    }

    // ===================== 批量学习（按学科选课 + 自动逐个学习答题） =====================
    function getDisciplines() {
        var out = [];
        var lis = document.querySelectorAll('.sut_lis');
        Array.prototype.forEach.call(lis, function (li) {
            var p = li.querySelector('.sut_p');
            if (!p) return;
            var name = p.innerText.trim();
            if (name) out.push(name);
        });
        return out;
    }
    function findDisciplineLi(name) {
        var lis = document.querySelectorAll('.sut_lis');
        for (var i = 0; i < lis.length; i++) {
            var p = lis[i].querySelector('.sut_p');
            if (p && p.innerText.trim() === name) return lis[i];
        }
        return null;
    }
    function scrapeProjects() {
        var out = [];
        var cards = document.querySelectorAll('.jet_lis');
        Array.prototype.forEach.call(cards, function (card) {
            var a = card.querySelector('a[href*="course.aspx?cid="]');
            if (!a) return;
            var href = a.getAttribute('href') || '';
            var m = href.match(/cid=([^&]+)/);
            if (!m) return;
            var t = card.querySelector('.test_tit');
            out.push({ cid: m[1], title: t ? t.innerText.trim() : m[1] });
        });
        return out;
    }
    function getQueue() { try { return JSON.parse(localStorage.getItem(keyBatchQueue)) || []; } catch (e) { return []; } }
    function setQueue(q) { try { localStorage.setItem(keyBatchQueue, JSON.stringify(q)); } catch (e) {} }
    function renderDisciplines() {
        var wrap = document.getElementById('jj-disc-wrap');
        if (!wrap) return;
        var discs = getDisciplines();
        if (!discs.length) { wrap.innerHTML = '<div class="jj-queue-empty">未检测到学科分类（请确认在「项目筛选」页面）</div>'; return; }
        wrap.innerHTML = '';
        discs.forEach(function (d) {
            var lbl = document.createElement('label');
            lbl.className = 'jj-disc';
            lbl.innerHTML = '<input type="checkbox" value="' + d + '"><span>' + d + '</span>';
            wrap.appendChild(lbl);
        });
    }
    function getCheckedDisciplines() {
        var arr = [];
        var boxes = document.querySelectorAll('#jj-disc-wrap input:checked');
        Array.prototype.forEach.call(boxes, function (b) { arr.push(b.value); });
        return arr;
    }
    function addToQueue(items) {
        var q = getQueue();
        var seen = {};
        q.forEach(function (i) { seen[i.cid] = true; });
        var added = 0;
        items.forEach(function (it) {
            if (it.cid && !seen[it.cid]) { q.push({ cid: it.cid, title: it.title, done: false }); seen[it.cid] = true; added++; }
        });
        setQueue(q); renderQueue();
        return added;
    }
    function renderQueue() {
        var box = document.getElementById('jj-queue');
        if (!box) return;
        var q = getQueue();
        var idx = parseInt(localStorage.getItem(keyBatchIndex) || '-1', 10);
        if (!q.length) { box.innerHTML = '<div class="jj-queue-empty">队列为空，先抓取项目</div>'; return; }
        box.innerHTML = '';
        q.forEach(function (it, i) {
            var d = document.createElement('div');
            d.className = 'jj-queue-item' + (it.done ? ' done' : '') + (i === idx ? ' cur' : '');
            d.innerHTML = '<span class="qidx">' + (i + 1) + '.</span><span>' + (it.done ? '✅ ' : '') + it.title + '</span>';
            box.appendChild(d);
        });
    }
    async function grabByDisciplines() {
        var names = getCheckedDisciplines();
        if (!names.length) { window.debugLog('⚠️ 请先勾选至少一个学科'); return; }
        window.debugLog('🔍 按 ' + names.length + ' 个学科抓取项目…');
        for (var i = 0; i < names.length; i++) {
            var li = findDisciplineLi(names[i]);
            if (!li) { window.debugLog('⚠️ 未找到学科：' + names[i]); continue; }
            try { li.click(); } catch (e) {}
            var child = li.querySelector('.child_p'); // 如「护理学全部」
            if (child) { try { child.click(); } catch (e) {} }
            await sleep(2200);
            var ps = scrapeProjects();
            var n = addToQueue(ps);
            window.debugLog('📥 [' + names[i] + '] 新增 ' + n + ' 个（本页共 ' + ps.length + '）');
        }
        window.debugLog('✅ 学科抓取完成，队列共 ' + getQueue().length + ' 个项目');
    }
    function clickByText(txts) {
        var all = document.querySelectorAll('a,button,input');
        for (var i = 0; i < all.length; i++) {
            var t = (all[i].innerText || all[i].value || '').trim();
            for (var j = 0; j < txts.length; j++) { if (t.indexOf(txts[j]) !== -1) return all[i]; }
        }
        return null;
    }
    function handleProjectDetail() {
        if (localStorage.getItem(keyBatchRunning) !== '1') return;
        if (!pathHas('course.aspx') || pathHas('course_ware')) return; // 仅项目详情页生效，防止跳转后误触发
        // 1) 直接点「立即学习 / 开始学习」等入口
        var btn = clickByText(['立即学习', '开始学习', '去学习', '进入学习', '参加学习']);
        if (btn) {
            try {
                if (btn.href) { navTo(btn.href); }
                else { btn.click(); }
                window.debugLog('📂 点击「' + (btn.innerText || btn.value || '学习') + '」进入学习');
                return;
            } catch (e) {}
        }
        // 2) 课件/课程列表：找第一个未完成项进入
        var items = document.querySelectorAll('li.lis-inside-content, .course, .jet_lis, .cour-list li');
        for (var i = 0; i < items.length; i++) {
            var it = items[i];
            var status = (it.innerText || '');
            if (status.indexOf('已完成') !== -1 || status.indexOf('待考试') !== -1) continue;
            if (status.indexOf('选修') !== -1 || status.indexOf('互动') !== -1) continue;
            var link = it.querySelector('a[href*="course_ware"], h2[onclick], a');
            if (link) {
                try {
                    if (link.href) { navTo(link.href); }
                    else if (typeof link.onclick === 'function') { link.onclick(); }
                    else { link.click(); }
                    window.debugLog('📂 进入课件学习');
                    return;
                } catch (e) {}
            }
        }
        window.debugLog('ℹ️ 项目详情页未找到自动学习入口（可点「下一项目」手动推进）');
    }
    function navTo(u) { window.location.href = u; }
    function startBatch() {
        var q = getQueue();
        if (!q.length) { window.debugLog('⚠️ 队列为空，请先抓取项目'); return; }
        if (q.every(function (i) { return i.done; })) { q.forEach(function (i) { i.done = false; }); setQueue(q); }
        localStorage.setItem(keyBatchRunning, '1');
        window.debugLog('🚀 开始批量学习，共 ' + q.length + ' 个项目');
        advanceBatch(false);
    }
    function stopBatch() { localStorage.setItem(keyBatchRunning, '0'); window.debugLog('⏹ 已暂停批量学习（当前项目继续，点开始学习可继续）'); renderQueue(); }
    function clearBatch() { setQueue([]); localStorage.setItem(keyBatchIndex, '-1'); renderQueue(); window.debugLog('🗑️ 队列已清空'); }
    function advanceBatch(force) {
        if (localStorage.getItem(keyBatchRunning) !== '1') return;
        var q = getQueue();
        var idx = -1;
        for (var i = 0; i < q.length; i++) { if (!q[i].done) { idx = i; break; } }
        if (idx === -1) {
            localStorage.setItem(keyBatchRunning, '0');
            window.debugLog('🎉 全部项目学习完成！');
            renderQueue();
            return;
        }
        localStorage.setItem(keyBatchIndex, String(idx));
        renderQueue();
        var item = q[idx];
        window.debugLog('➡️ 进入项目 ' + (idx + 1) + '/' + q.length + '：' + item.title);
        navTo(location.origin + '/pages/course.aspx?cid=' + item.cid);
    }
    function markCurrentProjectDone() {
        var q = getQueue();
        var idx = parseInt(localStorage.getItem(keyBatchIndex) || '-1', 10);
        if (idx >= 0 && q[idx]) { q[idx].done = true; setQueue(q); renderQueue(); }
    }
    function onProjectComplete() {
        if (localStorage.getItem(keyBatchRunning) !== '1') return;
        markCurrentProjectDone();
        setTimeout(function () { advanceBatch(false); }, 1500);
    }
    function initBatchUI() {
        var batchSec = document.getElementById('jj-batch');
        if (!batchSec) return;
        renderDisciplines();
        renderQueue();
        var refresh = document.getElementById('jj-batch-refresh');
        if (refresh) refresh.onclick = function () { renderDisciplines(); renderQueue(); window.debugLog('🔄 已刷新学科与队列'); };
        var grab = document.getElementById('jj-grab');
        if (grab) grab.onclick = function () { var ps = scrapeProjects(); var n = addToQueue(ps); window.debugLog('📥 本页抓取 ' + n + ' 个新项目（本页共 ' + ps.length + '）'); };
        var grabD = document.getElementById('jj-grab-disc');
        if (grabD) grabD.onclick = grabByDisciplines;
        var start = document.getElementById('jj-batch-start');
        if (start) start.onclick = startBatch;
        var next = document.getElementById('jj-batch-next');
        if (next) next.onclick = function () { markCurrentProjectDone(); advanceBatch(false); };
        var stop = document.getElementById('jj-batch-stop');
        if (stop) stop.onclick = stopBatch;
        var clear = document.getElementById('jj-batch-clear');
        if (clear) clear.onclick = clearBatch;
    }
})();