// ==UserScript==
// @name         2026年5月广东省教师继续教育-自动学习答题
// @namespace    auto-study-gds
// @version      12.4
// @description  自动播放视频、自动切换下一节、自动答题、防挂机检测、AI考核
// @match        https://jsxx.gds.edu.cn/study/course/*
// @match        https://jsglpt.gds.edu.cn/study/course/*
// @match        https://jsxx.gds.edu.cn/*/study/course/*
// @match        https://jsglpt.gds.edu.cn/*/study/course/*
// @grant        GM_xmlhttpRequest
// @run-at       document-idle
// ==/UserScript==

(function () {
    'use strict';

    var CFG = {
        CHECK_MS: 5000,
        MOUSE_MS: 15000,
        SCROLL_MS: 25000,
        CLICK_MS: 45000,
        QUIZ_MS: 2000,
        COMPLETE_WAIT: 60000,
        INIT_MS: 3000,
        MAX_LOG: 200,
        DQ_TIMEOUT: 60000,
        DQ_INTERVAL: 1500,
    };

    var CID = (function () {
        var m = location.pathname.match(/c_([a-f0-9]{32})/i);
        return m ? 'c_' + m[1] : null;
    })();

    var STKEY = '_as9_' + (CID || 'unk');

    var _db = {};

    function loadDB() {
        try {
            var s = localStorage.getItem(STKEY);
            if (s) _db = JSON.parse(s);
            if (!_db || typeof _db !== 'object') _db = {};
        } catch (e) { _db = {}; }
        if (!_db.items) _db.items = {};
    }

    function saveDB() {
        try { localStorage.setItem(STKEY, JSON.stringify(_db)); } catch (e) { }
    }

    function setStatus(aid, wat, req, done, name) {
        if (!_db.items[aid]) _db.items[aid] = {};
        _db.items[aid].wat = wat;
        _db.items[aid].req = req;
        _db.items[aid].done = done;
        _db.items[aid].name = name || '';
        _db.items[aid].ts = Date.now();
        saveDB();
    }

    function getStatus(aid) {
        return _db.items[aid] || null;
    }

    function isKnownDone(aid) {
        var s = getStatus(aid);
        return s && s.done === true;
    }

    function allDBItems() {
        return _db.items || {};
    }

    function getProgress() {
        var items = _db.items || {};
        var keys = Object.keys(items);
        var total = 0, done = 0;
        for (var i = 0; i < keys.length; i++) {
            if (keys[i].indexOf('a_') !== 0) continue;
            total++;
            if (items[keys[i]].done) done++;
        }
        return { total: total, done: done };
    }

    var LOG = [];
    function log(msg, t) {
        t = t || 'info';
        var ts = new Date().toLocaleTimeString();
        var p = { info: 'INF', warn: 'WRN', error: 'ERR', quiz: 'Q', vid: 'V', exam: 'E' };
        var line = '[' + ts + '][' + (p[t] || 'INF') + '] ' + msg;
        console.log('[AS] ' + line);
        LOG.push(line);
        if (LOG.length > CFG.MAX_LOG) LOG.shift();
        refreshLogUI();
    }

    var _paused = false;
    var _panel = false;
    var _collapsed = false;

    function makePanel() {
        if (_panel || document.getElementById('_asP')) return;
        _panel = true;

        var css = document.createElement('style');
        css.textContent =
            '#_asP{position:fixed;top:12px;right:12px;z-index:999999;width:320px;' +
            'font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;' +
            'user-select:none;transition:all .35s cubic-bezier(.4,0,.2,1);overflow:hidden;border-radius:14px;' +
            'box-shadow:0 8px 32px rgba(0,0,0,.35),0 0 0 1px rgba(255,255,255,.06);}' +
            '#_asP._coll{width:52px;border-radius:26px;}' +
            '#_asH{padding:14px 16px 10px;background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);' +
            'cursor:pointer;display:flex;align-items:center;justify-content:space-between;position:relative;overflow:hidden;}' +
            '#_asP._coll #_asH{padding:12px;border-radius:26px;justify-content:center;}' +
            '#_asH::before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;' +
            'background:conic-gradient(from 0deg,transparent,rgba(0,255,200,.06),transparent,rgba(100,100,255,.06),transparent);' +
            'animation:_asSpin 8s linear infinite;}@keyframes _asSpin{to{transform:rotate(360deg)}}' +
            '#_asHT{display:flex;flex-direction:column;gap:4px;position:relative;z-index:1;transition:opacity .2s;}' +
            '#_asP._coll #_asHT{display:none;}' +
            '#_asH1{font-size:14px;font-weight:700;color:#e0e0e0;letter-spacing:.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:220px;}' +
            '#_asH2{font-size:11px;color:rgba(255,255,255,.5);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:220px;}' +
            '#_asToggle{position:relative;z-index:1;width:28px;height:28px;border-radius:50%;border:1.5px solid rgba(255,255,255,.25);' +
            'background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;flex-shrink:0;' +
            'transition:transform .35s cubic-bezier(.4,0,.2,1);cursor:pointer;}' +
            '#_asToggle svg{width:14px;height:14px;fill:none;stroke:rgba(255,255,255,.7);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .35s;}' +
            '#_asP._coll #_asToggle{transform:rotate(180deg);}' +
            '#_asBody{max-height:600px;overflow:hidden;transition:max-height .4s cubic-bezier(.4,0,.2,1),opacity .25s;opacity:1;background:#1e1e2e;}' +
            '#_asP._coll #_asBody{max-height:0;opacity:0;}' +
            '#_asProgWrap{padding:10px 16px 6px;background:rgba(0,0,0,.2);}' +
            '#_asProgTop{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:8px;}' +
            '#_asProgTxt{font-size:13px;font-weight:600;color:#e0e0e0;}' +
            '#_asProgPct{font-size:11px;color:rgba(255,255,255,.45);font-weight:500;}' +
            '#_asProgBar{width:100%;height:6px;background:rgba(255,255,255,.08);border-radius:3px;overflow:hidden;position:relative;}' +
            '#_asProgFill{height:100%;border-radius:3px;transition:width .6s ease;position:relative;' +
            'background:linear-gradient(90deg,#00d2ff,#3a7bd5);' +
            'box-shadow:0 0 8px rgba(0,210,255,.4);}' +
            '#_asProgFill::after{content:"";position:absolute;top:0;right:0;width:20px;height:100%;' +
            'background:linear-gradient(90deg,transparent,rgba(255,255,255,.4));border-radius:3px;animation:_asShim 1.5s infinite;}' +
            '@keyframes _asShim{0%{opacity:0}50%{opacity:1}100%{opacity:0}}' +
            '#_asVidWrap{padding:10px 16px;display:flex;align-items:center;gap:14px;border-bottom:1px solid rgba(255,255,255,.05);}' +
            '#_asRing{width:48px;height:48px;flex-shrink:0;position:relative;}' +
            '#_asRing svg{width:48px;height:48px;transform:rotate(-90deg);}' +
            '#_asRingBg{fill:none;stroke:rgba(255,255,255,.08);stroke-width:3.5;}' +
            '#_asRingFg{fill:none;stroke-width:3.5;stroke-linecap:round;transition:stroke-dashoffset .8s ease,stroke .3s;' +
            'filter:drop-shadow(0 0 4px rgba(0,255,136,.3));}' +
            '#_asRingTxt{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:10px;font-weight:700;color:#e0e0e0;}' +
            '#_asVidInfo{flex:1;min-width:0;}' +
            '#_asVidTitle{font-size:12px;color:rgba(255,255,255,.8);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:4px;}' +
            '#_asVidTime{font-size:11px;color:rgba(255,255,255,.45);font-family:Consolas,monospace;}' +
            '#_asStudyRow{padding:6px 16px 10px;border-bottom:1px solid rgba(255,255,255,.05);}' +
            '#_asStudyBar{width:100%;height:4px;background:rgba(255,255,255,.06);border-radius:2px;overflow:hidden;margin-top:4px;}' +
            '#_asStudyFill{height:100%;border-radius:2px;transition:width .6s ease;background:linear-gradient(90deg,#f7971e,#ffd200);}' +
            '#_asStudyTxt{font-size:11px;color:rgba(255,255,255,.5);}' +
            '#_asTabs{display:flex;padding:0 16px;border-bottom:1px solid rgba(255,255,255,.05);}' +
            '#_asTabs button{flex:1;padding:8px 0;background:none;border:none;color:rgba(255,255,255,.35);font-size:11px;font-weight:600;' +
            'cursor:pointer;position:relative;transition:color .2s;}' +
            '#_asTabs button:hover{color:rgba(255,255,255,.6);}' +
            '#_asTabs button._act{color:#00d2ff;}' +
            '#_asTabs button._act::after{content:"";position:absolute;bottom:0;left:20%;right:20%;height:2px;' +
            'background:#00d2ff;border-radius:1px;box-shadow:0 0 6px rgba(0,210,255,.5);}' +
            '#_asPanels{max-height:200px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.1) transparent;}' +
            '#_asPanels::-webkit-scrollbar{width:4px;}' +
            '#_asPanels::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:2px;}' +
            '#_asPanel{display:none;padding:8px 16px 10px;}' +
            '#_asPanel._act{display:block;}' +
            '#_asList ._asItem{display:flex;align-items:center;gap:8px;padding:5px 0;border-bottom:1px solid rgba(255,255,255,.03);font-size:11px;}' +
            '#_asList ._asItem:last-child{border-bottom:none;}' +
            '#_asDot{width:8px;height:8px;border-radius:50%;flex-shrink:0;}' +
            '#_asDot.ok{background:#00ff88;box-shadow:0 0 6px rgba(0,255,136,.4);}' +
            '#_asDot.ing{background:#ffd200;box-shadow:0 0 6px rgba(255,210,0,.4);}' +
            '#_asDot.no{background:rgba(255,255,255,.15);}' +
            '#_asDot.cur{background:#00d2ff;box-shadow:0 0 6px rgba(0,210,255,.5);animation:_asPulse 1.5s infinite;}' +
            '@keyframes _asPulse{0%,100%{box-shadow:0 0 4px rgba(0,210,255,.3)}50%{box-shadow:0 0 10px rgba(0,210,255,.6)}}' +
            '#_asINm{flex:1;color:rgba(255,255,255,.7);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}' +
            '#_asINm.cur{color:#00d2ff;font-weight:600;}' +
            '#_asITm{font-size:10px;color:rgba(255,255,255,.3);font-family:Consolas,monospace;flex-shrink:0;}' +
            '#_asLogLine{font-size:10px;color:rgba(255,255,255,.4);font-family:Consolas,monospace;padding:2px 0;border-bottom:1px solid rgba(255,255,255,.02);line-height:1.5;word-break:break-all;}' +
            '#_asLogLine .t{color:rgba(255,255,255,.2);margin-right:6px;}' +
            '#_asLogLine .tag{color:#00d2ff;}' +
            '#_asLogLine .w{color:#ffd200;}' +
            '#_asLogLine .e{color:#ff5555;}' +
            '#_asLogLine .q{color:#c084fc;}' +
            '#_asLogLine .v{color:#00ff88;}' +
            '#_asLogLine .ex{color:#ff9f43;}' +
            '#_asBtns{display:flex;gap:8px;padding:10px 16px 14px;background:rgba(0,0,0,.15);}' +
            '#_asBtns button{flex:1;padding:7px 0;border:none;border-radius:8px;font-size:12px;font-weight:600;cursor:pointer;' +
            'transition:all .2s;position:relative;overflow:hidden;}' +
            '#_asBtns button:active{transform:scale(.96);}' +
            '#_asB1{background:rgba(255,255,255,.08);color:#e0e0e0;}' +
            '#_asB1:hover{background:rgba(255,255,255,.14);}' +
            '#_asB1._paused{background:linear-gradient(135deg,#3a7bd5,#00d2ff);color:#fff;}' +
            '#_asB2{background:rgba(0,210,255,.12);color:#00d2ff;}' +
            '#_asB2:hover{background:rgba(0,210,255,.22);}' +
            '#_asB4{background:rgba(0,255,136,.12);color:#00ff88;}' +
            '#_asB4:hover{background:rgba(0,255,136,.22);}' +
            '#_asExam{padding:10px 16px 14px;border-top:1px solid rgba(255,255,255,.08);background:rgba(100,50,200,.08);}' +
            '#_asExamKey{padding:6px 16px 8px;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(0,0,0,.1);}' +
            '#_asExamKeyH{font-size:11px;color:rgba(255,255,255,.5);margin-bottom:4px;}' +
            '#_asExamKey input{width:100%;box-sizing:border-box;padding:6px 10px;border-radius:6px;border:1px solid rgba(255,255,255,.15);' +
            'background:rgba(0,0,0,.3);color:#e0e0e0;font-size:11px;font-family:Consolas,monospace;outline:none;transition:border-color .2s;}' +
            '#_asExamKey input:focus{border-color:#c084fc;}' +
            '#_asExamKey input::placeholder{color:rgba(255,255,255,.2);}' +
            '#_asExamKeyBtns{display:flex;gap:6px;margin-top:6px;}' +
            '#_asExamKeyBtns button{flex:1;padding:4px 0;border:none;border-radius:4px;font-size:10px;font-weight:600;cursor:pointer;transition:all .2s;}' +
            '#_asExamKeyBtns button:active{transform:scale(.96);}' +
            '#_asK1{background:rgba(0,255,136,.15);color:#00ff88;}' +
            '#_asK1:hover{background:rgba(0,255,136,.25);}' +
            '#_asK2{background:rgba(255,255,255,.06);color:rgba(255,255,255,.5);}' +
            '#_asK2:hover{background:rgba(255,255,255,.12);}' +
            '#_asExamH{margin-bottom:8px;}' +
            '#_asExamH1{font-size:13px;font-weight:700;color:#c084fc;}' +
            '#_asExamH2{font-size:11px;color:rgba(255,255,255,.5);margin-top:2px;}' +
            '#_asExamQ{font-size:11px;color:rgba(255,255,255,.8);margin:8px 0;max-height:60px;overflow:hidden;line-height:1.5;}' +
            '#_asExamOpts{margin:6px 0;}' +
            '#_asExamOpts button{display:block;width:100%;padding:5px 8px;margin:3px 0;border:1px solid rgba(255,255,255,.1);border-radius:6px;' +
            'background:rgba(255,255,255,.04);color:rgba(255,255,255,.7);font-size:11px;text-align:left;cursor:pointer;transition:all .15s;}' +
            '#_asExamOpts button:hover{background:rgba(255,255,255,.08);}' +
            '#_asExamOpts button._sel{background:rgba(100,50,200,.25);border-color:#c084fc;color:#fff;}' +
            '#_asExamAct{display:flex;gap:6px;margin-top:8px;}' +
            '#_asExamAct button{flex:1;padding:6px 0;border:none;border-radius:6px;font-size:11px;font-weight:600;cursor:pointer;transition:all .2s;}' +
            '#_asExamAct button:active{transform:scale(.96);}' +
            '#_asEB1{background:rgba(100,50,200,.2);color:#c084fc;}' +
            '#_asEB1:hover{background:rgba(100,50,200,.35);}' +
            '#_asEB2{background:rgba(255,255,255,.08);color:#e0e0e0;}' +
            '#_asEB2:hover{background:rgba(255,255,255,.14);}' +
            '#_asEB3{background:rgba(0,255,136,.15);color:#00ff88;}' +
            '#_asEB3:hover{background:rgba(0,255,136,.25);}' +
            '#_asEB4{background:rgba(255,100,50,.15);color:#ff6432;}' +
            '#_asEB4:hover{background:rgba(255,100,50,.25);}' +
            '#_asExamProg{width:100%;height:4px;background:rgba(255,255,255,.06);border-radius:2px;margin-top:8px;overflow:hidden;}' +
            '#_asExamProgFill{height:100%;border-radius:2px;background:linear-gradient(90deg,#c084fc,#ff6b9d);transition:width .4s ease;}';
        document.head.appendChild(css);

        var d = document.createElement('div');
        d.id = '_asP';
        d.innerHTML =
            '<div id="_asH">' +
            '<div id="_asHT">' +
            '<div id="_asH1">AutoStudy v12.0</div>' +
            '<div id="_asH2">自动学习中...</div>' +
            '</div>' +
            '<div id="_asToggle"><svg viewBox="0 0 24 24"><polyline points="6 9 12 15 18 9"></polyline></svg></div>' +
            '</div>' +
            '<div id="_asBody">' +
            '<div id="_asProgWrap">' +
            '<div id="_asProgTop"><span id="_asProgTxt">0 / 0 已完成</span><span id="_asProgPct">0%</span></div>' +
            '<div id="_asProgBar"><div id="_asProgFill" style="width:0%"></div></div>' +
            '</div>' +
            '<div id="_asVidWrap">' +
            '<div id="_asRing"><svg viewBox="0 0 48 48"><circle id="_asRingBg" cx="24" cy="24" r="20"/><circle id="_asRingFg" cx="24" cy="24" r="20" stroke="#00ff88" stroke-dasharray="125.66" stroke-dashoffset="125.66"/></svg><div id="_asRingTxt">0%</div></div>' +
            '<div id="_asVidInfo"><div id="_asVidTitle">等待视频...</div><div id="_asVidTime">--:-- / --:--</div></div>' +
            '</div>' +
            '<div id="_asStudyRow"><div id="_asStudyTxt">学习时长: -- / -- min</div><div id="_asStudyBar"><div id="_asStudyFill" style="width:0%"></div></div></div>' +
            '<div id="_asTabs">' +
            '<button id="_asTab1" class="_act" data-p="list">章节</button>' +
            '<button id="_asTab2" data-p="log">日志</button>' +
            '</div>' +
            '<div id="_asPanels">' +
            '<div id="_asPanelList" class="_asPanel _act"></div>' +
            '<div id="_asPanelLog" class="_asPanel"></div>' +
            '</div>' +
            '<div id="_asBtns">' +
            '<button id="_asB1">暂停</button>' +
            '<button id="_asB2">下一节</button>' +
            '<button id="_asB4">日志</button>' +
            '<button id="_asB5">考核</button>' +
            '</div>' +
            '<div id="_asExam">' +
            '<div id="_asExamKey"><div style="margin-bottom:8px;font-size:12px;"><a href="https://cloud.siliconflow.cn/i/gwQ7u3wt" target="_blank" style="color:#4fc3f7;text-decoration:underline;">获取硅基流动 API 免费额度</a></div><div id="_asExamKeyH">硅基流动 API Key</div>' +
            '<input type="password" id="_asKeyInput" placeholder="sk-...">' +
            '<div id="_asExamKeyBtns"><button id="_asK1">保存</button><button id="_asK2">清除</button></div></div>' +
            '<div id="_asExamH"><div id="_asExamH1">考核模式</div><div id="_asExamH2">就绪</div></div>' +
            '<div id="_asExamQ"></div>' +
            '<div id="_asExamOpts"></div>' +
            '<div id="_asExamAct">' +
            '<button id="_asEB3">开始自动答题</button>' +
            '<button id="_asEB1">手动答题</button>' +
            '<button id="_asEB4">停止</button>' +
            '<button id="_asEB2">退出</button>' +
            '</div>' +
            '<div id="_asExamProg"><div id="_asExamProgFill" style="width:0%"></div></div>' +
            '</div>' +
            '</div>';
        document.body.appendChild(d);

        document.getElementById('_asToggle').onclick = function () {
            _collapsed = !_collapsed;
            var p = document.getElementById('_asP');
            if (_collapsed) { p.classList.add('_coll'); }
            else { p.classList.remove('_coll'); }
        };

        document.getElementById('_asB1').onclick = function () {
            _paused = !_paused;
            if (_paused) {
                this.textContent = '继续';
                this.classList.add('_paused');
            } else {
                this.textContent = '暂停';
                this.classList.remove('_paused');
            }
            log(_paused ? '已暂停' : '已继续', 'warn');
        };
        document.getElementById('_asB2').onclick = function () {
            log('手动下一节', 'warn');
            _switching = false;
            _promptDone = false;
            nextVideo();
        };
        document.getElementById('_asB4').onclick = function () {
            switchTab('log');
        };
        document.getElementById('_asB5').onclick = function () { goToExam(); };
        document.getElementById('_asEB3').onclick = function () { startAutoExam(); };
        document.getElementById('_asEB1').onclick = function () { enterManualExamMode(); };
        document.getElementById('_asEB4').onclick = function () { stopAutoExam(); };
        document.getElementById('_asEB2').onclick = function () { exitExamMode(); };

        document.getElementById('_asTab1').onclick = function () { switchTab('list'); };
        document.getElementById('_asTab2').onclick = function () { switchTab('log'); };

        var keyInput = document.getElementById('_asKeyInput');
        var savedKey = getApiKey();
        if (savedKey) keyInput.value = savedKey.substring(0, 8) + '***';
        document.getElementById('_asK1').onclick = function () {
            var val = keyInput.value.trim();
            if (val && !val.endsWith('***')) { setApiKey(val); log('API Key 已保存', 'warn'); keyInput.value = val.substring(0, 8) + '***'; }
            else { log('请输入有效的 Key', 'error'); }
        };
        document.getElementById('_asK2').onclick = function () { setApiKey(''); keyInput.value = ''; log('API Key 已清除', 'warn'); };
        keyInput.onfocus = function () {
            var realKey = getApiKey();
            if (realKey) keyInput.value = realKey;
        };
        log('API Key: ' + (savedKey ? '已设置' : '未设置'), savedKey ? 'warn' : 'warn');
    }

    function switchTab(name) {
        var btns = document.querySelectorAll('#_asTabs button');
        for (var i = 0; i < btns.length; i++) {
            if (btns[i].getAttribute('data-p') === name) btns[i].classList.add('_act');
            else btns[i].classList.remove('_act');
        }
        var panels = document.querySelectorAll('#_asPanels ._asPanel');
        for (var i = 0; i < panels.length; i++) {
            if (panels[i].id === '_asPanel' + name.charAt(0).toUpperCase() + name.slice(1)) panels[i].classList.add('_act');
            else panels[i].classList.remove('_act');
        }
        if (name === 'list') refreshListUI();
        if (name === 'log') refreshLogUI();
    }

    function refreshLogUI() {
        var el = document.getElementById('_asPanelLog');
        if (!el || !el.classList.contains('_act')) return;
        var html = '';
        for (var i = LOG.length - 30; i < LOG.length; i++) {
            if (i < 0) continue;
            var line = LOG[i];
            var cls = '_asLogLine';
            line = line.replace(/\[ERR\]/g, '<span class="tag e">[ERR]</span>');
            line = line.replace(/\[WRN\]/g, '<span class="tag w">[WRN]</span>');
            line = line.replace(/\[Q\]/g, '<span class="tag q">[Q]</span>');
            line = line.replace(/\[E\]/g, '<span class="tag ex">[E]</span>');
            line = line.replace(/\[V\]/g, '<span class="tag v">[V]</span>');
            line = line.replace(/\[INF\]/g, '<span class="tag">[INF]</span>');
            html += '<div class="' + cls + '">' + line + '</div>';
        }
        el.innerHTML = html;
        el.scrollTop = el.scrollHeight;
    }

    function refreshVideoUI() {
        var v = vid();
        var ringFg = document.getElementById('_asRingFg');
        var ringTxt = document.getElementById('_asRingTxt');
        var vidTitle = document.getElementById('_asVidTitle');
        var vidTime = document.getElementById('_asVidTime');
        var studyTxt = document.getElementById('_asStudyTxt');
        var studyFill = document.getElementById('_asStudyFill');
        var h1 = document.getElementById('_asH1');
        var h2 = document.getElementById('_asH2');

        if (!v || !v.duration) {
            if (ringTxt) ringTxt.textContent = '--';
            if (vidTitle) vidTitle.textContent = '等待视频...';
            if (vidTime) vidTime.textContent = '--:-- / --:--';
            if (h2) h2.textContent = '等待视频加载...';
            refreshProgUI();
            return;
        }

        var cur = fmt(v.currentTime), dur = fmt(v.duration);
        var pct = v.duration > 0 ? v.currentTime / v.duration * 100 : 0;
        var circ = 125.66;
        var offset = circ - (circ * pct / 100);

        if (ringFg) {
            ringFg.setAttribute('stroke-dashoffset', offset);
            var col = pct >= 99.5 ? '#00ff88' : pct > 50 ? '#00d2ff' : '#ffd200';
            ringFg.setAttribute('stroke', col);
        }
        if (ringTxt) ringTxt.textContent = Math.round(pct) + '%';
        if (vidTitle) {
            var nm = curName();
            vidTitle.textContent = nm || '未知视频';
        }
        if (vidTime) {
            var st = v.paused ? ' ||' : v.ended ? ' END' : ' >>';
            vidTime.textContent = cur + ' / ' + dur + st;
        }
        if (h1) h1.textContent = 'AutoStudy v12.0';
        if (h2) {
            var nm2 = curName();
            h2.textContent = nm2 ? nm2.substring(0, 30) : '自动学习中...';
        }

        var si = studyInfo();
        if (si && si.req >= 0 && si.wat >= 0) {
            if (studyTxt) studyTxt.textContent = '学习时长: ' + si.wat + ' / ' + si.req + ' min' + (si.wat >= si.req ? ' ✓' : '');
            if (studyFill) {
                var sp = Math.min(si.wat / si.req * 100, 100);
                studyFill.style.width = sp + '%';
                studyFill.style.background = sp >= 100 ? 'linear-gradient(90deg,#00ff88,#00cc6a)' : 'linear-gradient(90deg,#f7971e,#ffd200)';
            }
        } else {
            if (studyTxt) studyTxt.textContent = '学习时长: 计算中...';
            if (studyFill) studyFill.style.width = '0%';
        }

        refreshProgUI();
    }

    function refreshProgUI() {
        var txt = document.getElementById('_asProgTxt');
        var pct = document.getElementById('_asProgPct');
        var fill = document.getElementById('_asProgFill');
        if (!txt) return;
        var pg = getProgress();
        var p = pg.total > 0 ? Math.round(pg.done / pg.total * 100) : 0;
        txt.textContent = pg.done + ' / ' + pg.total + ' 已完成';
        if (pct) pct.textContent = p + '%';
        if (fill) fill.style.width = p + '%';
    }

    function refreshListUI() {
        var el = document.getElementById('_asPanelList');
        if (!el) return;
        var aids = allAids();
        var cur = curAid();
        var html = '';
        for (var i = 0; i < aids.length; i++) {
            var aid = aids[i];
            var nm = nameById(aid) || aid.substring(0, 12);
            var st = getStatus(aid);
            var isCur = aid === cur;
            var dotCls, nmCls;
            if (isCur) {
                dotCls = 'cur';
                nmCls = ' cur';
            } else if (st && st.done) {
                dotCls = 'ok';
                nmCls = '';
            } else if (st && st.wat >= 0 && st.wat < st.req) {
                dotCls = 'ing';
                nmCls = '';
            } else {
                dotCls = 'no';
                nmCls = '';
            }
            var tm = '';
            if (st && st.wat >= 0 && st.req >= 0) tm = st.wat + '/' + st.req + 'm';
            html += '<div class="_asItem"><div id="_asDot" class="' + dotCls + '"></div>' +
                '<div id="_asINm" class="' + nmCls + '">' + nm + '</div>' +
                '<div id="_asITm">' + tm + '</div></div>';
        }
        el.innerHTML = html;
    }

    function spoofVis() {
        try { Object.defineProperty(document, 'hidden', { get: function () { return false; }, configurable: true }); } catch (e) { }
        try { Object.defineProperty(document, 'visibilityState', { get: function () { return 'visible'; }, configurable: true }); } catch (e) { }
        ['visibilitychange', 'webkitvisibilitychange'].forEach(function (n) {
            document.addEventListener(n, function (e) { e.stopImmediatePropagation(); }, true);
        });
        window.addEventListener('blur', function (e) { e.stopImmediatePropagation(); }, true);
    }

    function fakeMouse(x, y) {
        try {
            var el = document.elementFromPoint(x, y);
            ['mouseenter', 'mouseover', 'mousemove'].forEach(function (t) {
                try {
                    var ev = new MouseEvent(t, { bubbles: true, cancelable: true });
                    try { ev = new MouseEvent(t, { clientX: x, clientY: y, bubbles: true, cancelable: true }); } catch (e2) {}
                    if (el) el.dispatchEvent(ev);
                    document.dispatchEvent(ev);
                } catch (e3) {}
            });
        } catch (e) {}
    }

    function fakeClick(x, y) {
        try {
            var el = document.elementFromPoint(x, y);
            if (!el) return;
            var tg = el.tagName.toLowerCase();
            if (['video', 'input', 'select', 'textarea', 'a', 'button'].indexOf(tg) >= 0) return;
            if (el.closest('video,input,select,textarea,a.btn,button')) return;
            ['mousedown', 'mouseup', 'click'].forEach(function (t) {
                try {
                    var ev = new MouseEvent(t, { bubbles: true, cancelable: true, button: 0 });
                    try { ev = new MouseEvent(t, { clientX: x, clientY: y, bubbles: true, cancelable: true, button: 0 }); } catch (e2) {}
                    el.dispatchEvent(ev);
                } catch (e3) {}
            });
        } catch (e) {}
    }

    function vid() { return document.querySelector('video'); }

    function ckp() {
        if (window.player) return window.player;
        try {
            var f = document.querySelector('iframe');
            if (f && f.contentWindow && f.contentWindow.player) return f.contentWindow.player;
        } catch (e) { }
        return null;
    }

    function studyInfo() {
        var vt = document.getElementById('viewTimeTxt');
        if (!vt) return null;
        var wat = parseInt(vt.textContent, 10);
        if (isNaN(wat)) wat = -1;
        var p = vt.closest('.g-study-prompt');
        if (!p) return { req: -1, wat: wat };
        var spans = p.querySelectorAll('span');
        var req = -1;
        for (var i = 0; i < spans.length; i++) {
            if (spans[i] === vt) continue;
            var n = parseInt(spans[i].textContent, 10);
            if (!isNaN(n)) { req = n; break; }
        }
        if (req < 0) {
            var hi = p.querySelector('input[type="hidden"]');
            if (hi) {
                var hv = parseInt(hi.value, 10);
                if (!isNaN(hv)) req = hv;
            }
        }
        return { req: req, wat: wat };
    }

    function resume() {
        var v = vid();
        if (!v || v.ended) return false;
        if (!v.paused) return true;
        var ck = ckp();
        if (ck) {
            try { if (typeof ck.videoPlay === 'function') { ck.videoPlay(); return true; } } catch (e) { }
            try { if (typeof ck.play === 'function') { ck.play(); return true; } } catch (e) { }
        }
        try {
            var r = v.play();
            if (r && typeof r.catch === 'function') r.catch(function () { });
            return true;
        } catch (e) { }
        return false;
    }

    function fmt(s) {
        var m = Math.floor(s / 60), sec = Math.floor(s % 60);
        return m + ':' + (sec < 10 ? '0' : '') + sec;
    }

    var _quizDone = false, _quizHash = '';

    function checkQuiz() {
        if (_paused) return;
        var qd = document.getElementById('questionDiv');
        var ly = document.querySelector('.mylayer-layer');
        if (!ly || !qd) { _quizDone = false; _quizHash = ''; return; }
        if (ly.style.display === 'none') return;
        if (ly.offsetWidth === 0 && ly.style.width === '0px') return;
        var h = qd.textContent.length + '|' + (qd.querySelector('.qs-type') || {}).textContent;
        if (_quizDone && h === _quizHash) return;
        var ans = extractAns(qd);
        if (!ans || ans.length === 0) { log('答案提取失败，重试中', 'error'); return; }
        _quizDone = true;
        _quizHash = h;
        log('答案: ' + ans.join(','), 'quiz');
        selectAndSubmit(qd, ans);
    }

    function extractAns(qd) {
        var sc = findScripts(qd);
        if (sc.length === 0) { log('无script', 'error'); return null; }
        for (var i = 0; i < sc.length; i++) {
            var c = sc[i].textContent;
            var m1 = c.match(/var\s+answerList;\s*if\s*\('([^']+)'\.includes\('/);
            if (m1) { var r = m1[1]; if (r.indexOf(',') >= 0) { try { return JSON.parse(r); } catch (e) { } } return [r]; }
            var m2 = c.match(/answerList\s*=\s*\[([^\]]+)\]/);
            if (m2) { return m2[1].replace(/'/g, '').split(',').map(function (v) { return v.trim(); }); }
            var m3 = c.match(/answerList\s*=\s*JSON\.parse\('([^']+)'\)/);
            if (m3) { try { return JSON.parse(m3[1]); } catch (e) { } }
        }
        return null;
    }

    function findScripts(qd) {
        var p = qd.parentElement;
        if (p) { var s = p.querySelectorAll('script'); if (s.length > 0) return s; }
        var g = qd.closest('.mylayer-layer');
        if (g) return g.querySelectorAll('script');
        var all = document.querySelectorAll('script');
        var res = [];
        for (var i = 0; i < all.length; i++) { if (all[i].textContent.indexOf('finishTest') >= 0) res.push(all[i]); }
        return res;
    }

    function selectAndSubmit(qd, ans) {
        var ins = qd.querySelectorAll('input[name="response"]');
        ins.forEach(function (inp) {
            inp.checked = false;
            var lb = inp.closest('label');
            if (lb) { var st = lb.querySelector('strong'); if (st) st.className = ''; }
        });
        ans.forEach(function (a) {
            ins.forEach(function (inp) {
                if (inp.value === a) {
                    inp.checked = true;
                    var lb = inp.closest('label');
                    if (lb) { var st = lb.querySelector('strong'); if (st) st.className = 'on'; }
                    var sp = lb ? lb.querySelector('span') : null;
                    log('选: ' + a + ' ' + (sp ? sp.textContent.trim() : ''), 'quiz');
                }
            });
        });
        setTimeout(function () { submit(qd); }, 500);
    }

    function submit(qd) {
        if (typeof window.finishTest === 'function') {
            try {
                window.finishTest();
                log('finishTest() OK', 'quiz');
                setTimeout(function () {
                    var ly = document.querySelector('.mylayer-layer');
                    if (ly && ly.style.display !== 'none' && ly.offsetWidth > 0) { _quizDone = false; }
                    else { log('答题弹窗关闭', 'quiz'); setTimeout(resume, 1000); }
                }, 2000);
                return;
            } catch (e) { log('finishTest err: ' + e.message, 'error'); }
        }
        var btn = qd.querySelector('.u-main-btn');
        if (btn) {
            btn.click();
            setTimeout(function () {
                var ly = document.querySelector('.mylayer-layer');
                if (ly && ly.style.display !== 'none' && ly.offsetWidth > 0) { _quizDone = false; }
                else { setTimeout(resume, 1000); }
            }, 2000);
            return;
        }
        _quizDone = false;
    }

    function checkCompletePopup() {
        if (_paused) return;
        var lys = document.querySelectorAll('.mylayer-layer');
        for (var i = 0; i < lys.length; i++) {
            var ly = lys[i];
            if (ly.style.display === 'none' || ly.offsetWidth === 0) continue;
            var ct = ly.querySelector('.mylayer-content');
            if (!ct) continue;
            var tx = ct.textContent || '';
            if (tx.indexOf('已完成这个活动') >= 0 || tx.indexOf('已完成此活动') >= 0) {
                log('"已完成活动"弹窗', 'warn');
                var aid = curAid();
                var nm = curName() || '';
                var si = studyInfo();
                if (aid) setStatus(aid, si ? si.wat : -1, si ? si.req : -1, true, nm);
                var ob = ly.querySelector('.mylayer-btn.type1') || ly.querySelector('button.mylayer-btn');
                if (ob) {
                    ob.click();
                    log('点击确定');
                    if (_examMode || _autoExamRunning) {
                        log('考核模式，不自动切换', 'exam');
                    } else {
                        setTimeout(function () { _promptDone = false; nextVideo(); }, 2000);
                    }
                }
                else { var cb = ly.querySelector('.mylayer-closeico'); if (cb) cb.click(); }
                return;
            }
        }
    }

    var _promptDone = false;
    var _completeTimer = null;

    function checkStudyProgress() {
        if (_paused) return;
        if (_examMode || isExamPage()) return;
        var si = studyInfo();
        if (!si || si.req < 0 || si.wat < 0) return;
        var aid = curAid();
        var nm = curName() || '';
        if (!aid) return;
        setStatus(aid, si.wat, si.req, si.wat >= si.req, nm);
        if (_promptDone) return;
        if (isKnownDone(aid)) {
            _promptDone = true;
            log('已知完成: ' + nm + ' (' + si.wat + '>=' + si.req + ') 切下一节(等60秒)', 'vid');
            if (_completeTimer) clearTimeout(_completeTimer);
            _completeTimer = setTimeout(function () {
                _promptDone = false;
                nextVideo();
            }, CFG.COMPLETE_WAIT);
            return;
        }
        if (si.wat >= si.req) {
            _promptDone = true;
            setStatus(aid, si.wat, si.req, true, nm);
            log('学习达标 ' + si.wat + '>=' + si.req + 'min 切下一节(等60秒)', 'vid');
            if (_completeTimer) clearTimeout(_completeTimer);
            _completeTimer = setTimeout(function () {
                _promptDone = false;
                nextVideo();
            }, CFG.COMPLETE_WAIT);
        }
    }

    function curAid() {
        var m = location.pathname.match(/a_([a-f0-9]{32})/i);
        if (m) return 'a_' + m[1];
        var c = document.querySelector('a.section.z-crt');
        if (c) { var dd = c.closest('dd[childsectionactivitieid]'); if (dd) return dd.getAttribute('childsectionactivitieid'); }
        return null;
    }

    function curName() {
        var c = document.querySelector('a.section.z-crt');
        if (c) { var sp = c.querySelector('.txt'); if (sp) return sp.textContent.trim(); return c.textContent.trim(); }
        var h = document.querySelector('.g-studyAct-box h3');
        return h ? h.textContent.trim() : null;
    }

    function nameById(aid) {
        var dd = document.querySelector('dd[childsectionactivitieid="' + aid + '"]');
        if (dd) { var sp = dd.querySelector('.txt'); if (sp) return sp.textContent.trim(); var a = dd.querySelector('a.section'); if (a) return a.textContent.trim(); }
        return null;
    }

    function allAids() {
        var ids = [];
        document.querySelectorAll('dd[childsectionactivitieid]').forEach(function (dd) {
            var id = dd.getAttribute('childsectionactivitieid');
            var a = dd.querySelector('a.section');
            if (a && a.textContent.indexOf('考核') < 0) ids.push(id);
        });
        return ids;
    }

    function nextAid(cur) {
        var ids = allAids();
        var idx = ids.indexOf(cur);
        return idx >= 0 && idx < ids.length - 1 ? ids[idx + 1] : null;
    }

    function findFirstIncomplete() {
        var aids = allAids();
        for (var i = 0; i < aids.length; i++) {
            if (!isKnownDone(aids[i])) return aids[i];
        }
        return null;
    }

    var _switching = false;

    function nextVideo() {
        if (_switching) return false;
        if (isExamPage() || _examMode) { _switching = false; log('考核页面，停止自动切换', 'exam'); return false; }
        _switching = true;
        _promptDone = false;
        var btns = document.querySelectorAll('a.btn.next');
        for (var i = 0; i < btns.length; i++) {
            if (btns[i].classList.contains('disable') || btns[i].classList.contains('disabled')) continue;
            if (btns[i].offsetWidth === 0) continue;
            btns[i].click();
            log('"下一个活动"按钮', 'vid');
            schedResume();
            return true;
        }
        var c = curAid(), n = nextAid(c);
        if (n && CID && typeof studyCourse === 'function') {
            studyCourse(CID, '', n);
            log('studyCourse -> ' + n.substring(0, 12), 'vid');
            schedResume();
            return true;
        }
        _switching = false;
        log('没有下一节了', 'warn');
        return false;
    }

    function schedResume() {
        [4000, 7000, 11000, 18000].forEach(function (d) {
            setTimeout(function () {
                if (d === 4000) {
                    var si = studyInfo();
                    var aid = curAid();
                    var nm = curName() || '';
                    if (si && si.req >= 0 && si.wat >= 0 && si.wat >= si.req) {
                        if (aid) setStatus(aid, si.wat, si.req, true, nm);
                        if (isKnownDone(aid)) {
                            log('新活动已完成，跳过', 'vid');
                            _promptDone = true;
                            setTimeout(function () {
                                _promptDone = false;
                                nextVideo();
                            }, CFG.COMPLETE_WAIT);
                            return;
                        }
                    }
                }
                var v = vid();
                if (v && v.paused && !v.ended) {
                    resume();
                    if (d < 11000) log('恢复播放 ' + d + 'ms', 'vid');
                }
                if (d >= 11000) _switching = false;
            }, d);
        });
    }

    var _endDone = false;

    function onEnd() {
        if (_endDone) return;
        if (_examMode || isExamPage()) return;
        _endDone = true;
        var v = vid();
        if (!v) return;
        var si = studyInfo();
        if (si && si.req >= 0 && si.wat >= 0 && si.wat < si.req) {
            log('视频播完但学习时间不够 ' + si.wat + '/' + si.req + ' 重新播放', 'warn');
            _endDone = false;
            setTimeout(function () {
                v.currentTime = 0;
                var ck = ckp();
                if (ck && typeof ck.videoPlay === 'function') ck.videoPlay();
                else if (ck && typeof ck.play === 'function') ck.play();
                else v.play();
            }, 3000);
            return;
        }
        log('视频结束，学习达标', 'vid');
        var aid = curAid();
        var nm = curName() || '';
        if (aid) setStatus(aid, si ? si.wat : -1, si ? si.req : -1, true, nm);
        _promptDone = true;
        setTimeout(function () {
            _promptDone = false;
            nextVideo();
            _endDone = false;
        }, CFG.COMPLETE_WAIT);
    }

    function isExamPage() {
        var c = document.querySelector('a.section.z-crt');
        if (c && c.textContent.indexOf('考核') >= 0) return true;
        var aid = curAid();
        if (aid === getExamAid()) return true;
        var nm = curName() || '';
        if (nm === '考核' || nm === '考试') return true;
        return false;
    }

    function videoLoop() {
        if (_paused) return;
        if (_examMode || isExamPage()) return;
        if (location.href.indexOf('/study/course/') < 0) return;
        var v = vid();
        if (!v) return;
        refreshVideoUI();
        if (v.paused && !v.ended) {
            for (var i = 0; i < 3; i++) { if (!v.paused) break; resume(); }
        }
        if (v.ended || (v.duration > 0 && v.currentTime >= v.duration - 3)) onEnd();
    }

    var _examMode = false;
    var _autoExamRunning = false;
    var _autoExamIdx = 0;
    var _autoExamQuestions = [];
    var _examTimer = null;
    var _examHash = '';
    var _examSelected = [];
    var _examMulti = false;
    var _examDoc = null;
    var _manualExam = false;
    var _dqAnswerTimer = null;

    function getApiKey() { return localStorage.getItem('_as_si_key') || ''; }
    function setApiKey(k) { try { localStorage.setItem('_as_si_key', k); } catch (e) { } }
    var SI_API_URL = 'https://api.siliconflow.cn/v1/chat/completions';
    var SI_MODEL = 'deepseek-ai/DeepSeek-V4-Pro';

    function getExamAid() {
        var els = document.querySelectorAll('dd[childsectionactivitieid]');
        for (var i = 0; i < els.length; i++) {
            var a = els[i].querySelector('a.section');
            if (a && a.textContent.indexOf('考核') >= 0) return els[i].getAttribute('childsectionactivitieid');
        }
        return null;
    }

    function getExamDoc() {
        var iframes = document.querySelectorAll('iframe');
        for (var i = 0; i < iframes.length; i++) {
            try {
                var doc = iframes[i].contentDocument || iframes[i].contentWindow.document;
                if (doc && doc.body && doc.body.innerHTML.length > 50) {
                    if (doc.querySelector('.m-topic-item') || doc.querySelector('.g-topic-lst')) return doc;
                }
            } catch (e) { }
        }
        if (document.querySelector('.m-topic-item') || document.querySelector('.g-topic-lst')) return document;
        return null;
    }

    function goToExam() {
        var eid = getExamAid();
        if (!eid) { log('未找到考核活动', 'error'); return; }
        if (CID && typeof studyCourse === 'function') { studyCourse(CID, '', eid); log('跳转考核', 'warn'); }
    }

    function enterExamMode() {
        if (_examMode) return;
        _examMode = true;
        _examHash = '';
        _examSelected = [];
        _manualExam = false;
        var el = document.getElementById('_asExam');
        if (el) el.classList.add('_show');
        log('进入考核模式', 'warn');
    }

    function enterManualExamMode() {
        _manualExam = true;
        if (_examTimer) { clearInterval(_examTimer); _examTimer = null; }
        _examTimer = setInterval(scanExamQuestion, 3000);
        setTimeout(scanExamQuestion, 1000);
        log('手动答题模式', 'exam');
        updateExamStatus('手动答题 - 题目加载中...');
    }

    function exitExamMode() {
        stopAutoExam();
        _examMode = false;
        if (_examTimer) { clearInterval(_examTimer); _examTimer = null; }
        var el = document.getElementById('_asExam');
        if (el) el.classList.remove('_show');
        log('退出考核模式', 'warn');
    }

    function stopAutoExam() {
        _autoExamRunning = false;
        if (_dqAnswerTimer) { clearTimeout(_dqAnswerTimer); _dqAnswerTimer = null; }
        if (_dqSafetyTimer) { clearTimeout(_dqSafetyTimer); _dqSafetyTimer = null; }
        if (_examTimer) { clearInterval(_examTimer); _examTimer = null; }
        log('停止自动答题', 'exam');
        updateExamStatus('已停止');
    }

    function parseAllExamQuestions(doc) {
        var questions = [];
        var items = doc.querySelectorAll('.m-topic-item');
        if (items.length === 0) {
            var topicList = doc.getElementById('topicList');
            if (topicList) items = topicList.querySelectorAll('li');
        }
        for (var i = 0; i < items.length; i++) {
            var item = items[i];
            var titleEl = item.querySelector('.title');
            if (!titleEl) continue;
            var typeEl = titleEl.querySelector('.qs-type');
            var typeText = typeEl ? typeEl.textContent.trim() : '';
            var qText = titleEl.textContent.replace(typeEl ? typeEl.textContent : '', '').replace(/^\d+[、.]\s*/, '').trim();
            var isMulti = typeText.indexOf('多选') >= 0;
            var isJudge = typeText.indexOf('是非') >= 0 || typeText.indexOf('判断') >= 0;

            var options = [];
            var inputs = item.querySelectorAll('input[type="radio"], input[type="checkbox"]');
            for (var j = 0; j < inputs.length; j++) {
                var label = inputs[j].closest('label');
                var text = '';
                if (label) {
                    var span = label.querySelector('span');
                    text = span ? span.textContent.trim() : label.textContent.trim();
                }
                options.push({
                    value: inputs[j].value,
                    text: text,
                    input: inputs[j]
                });
            }

            if (options.length > 0) {
                questions.push({
                    index: questions.length,
                    text: qText,
                    type: typeText,
                    multi: isMulti || isJudge,
                    judge: isJudge,
                    options: options,
                    item: item
                });
            }
        }
        return questions;
    }

    var _examRetryCount = 0;
    var _examGoCount = 0;
    var _dqSafetyTimer = null;

    function startAutoExam() {
        if (_autoExamRunning) {
            log('自动答题已在运行', 'warn');
            return;
        }
        if (!getApiKey()) {
            log('请先在面板填写硅基流动 API Key！', 'error');
            updateExamStatus('请填写 API Key');
            return;
        }
        var doc = getExamDoc();
        if (!doc) {
            _examRetryCount++;
            if (_examRetryCount > 10) {
                log('考核页面加载失败，已重试10次，放弃', 'error');
                _examRetryCount = 0;
                _examGoCount = 0;
                return;
            }
            log('等待考核题目加载(' + _examRetryCount + '/10)', 'exam');
            if (_examGoCount < 1) {
                _examGoCount = 1;
                goToExam();
            }
            setTimeout(startAutoExam, 5000);
            return;
        }
        _examRetryCount = 0;
        _examGoCount = 0;
        _autoExamQuestions = parseAllExamQuestions(doc);
        if (_autoExamQuestions.length === 0) {
            _examRetryCount++;
            if (_examRetryCount > 10) {
                log('未找到考核题目，已重试10次，放弃', 'error');
                _examRetryCount = 0;
                return;
            }
            log('考核题目解析中(' + _examRetryCount + '/10)', 'exam');
            setTimeout(startAutoExam, 5000);
            return;
        }
        _examRetryCount = 0;
        _examGoCount = 0;
        _autoExamRunning = true;
        _autoExamIdx = 0;
        _manualExam = false;
        log('开始自动答题，共' + _autoExamQuestions.length + '题', 'exam');
        updateExamStatus('硅基流动就绪');
        updateExamProg(0, _autoExamQuestions.length);
        setTimeout(processNextExamQ, 2000);
    }

    function callSiliconFlow(prompt, callback) {
        log('调用硅基流动 API...', 'exam');
        GM_xmlhttpRequest({
            method: 'POST',
            url: SI_API_URL,
            headers: {
                'Content-Type': 'application/json',
                'Authorization': 'Bearer ' + getApiKey()
            },
            data: JSON.stringify({
                model: SI_MODEL,
                messages: [
                    { role: 'system', content: '你是一个考试答题助手。请只回答选项字母（如A、BC、ABD），不要任何解释。' },
                    { role: 'user', content: prompt }
                ],
                temperature: 0.1,
                max_tokens: 50
            }),
            timeout: CFG.DQ_TIMEOUT,
            onload: function (resp) {
                try {
                    var data = JSON.parse(resp.responseText);
                    var answer = data.choices && data.choices[0] && data.choices[0].message ?
                        data.choices[0].message.content.trim() : '';
                    log('API返回: ' + answer, 'exam');
                    callback(answer);
                } catch (e) {
                    log('解析API响应失败: ' + e.message, 'error');
                    callback('');
                }
            },
            onerror: function () {
                log('API请求失败', 'error');
                callback('');
            },
            ontimeout: function () {
                log('API超时', 'error');
                callback('');
            }
        });
    }

    function processNextExamQ() {
        if (!_autoExamRunning) return;
        if (_dqSafetyTimer) { clearTimeout(_dqSafetyTimer); _dqSafetyTimer = null; }
        if (_autoExamIdx >= _autoExamQuestions.length) {
            log('全部 ' + _autoExamQuestions.length + ' 题已答完，提交中...', 'exam');
            submitExamForm();
            return;
        }
        var q = _autoExamQuestions[_autoExamIdx];
        var num = _autoExamIdx + 1;
        var total = _autoExamQuestions.length;
        updateExamStatus('第' + num + '/' + total + '题: API调用中...');
        updateExamProg(num - 1, total);
        showExamQ(q);

        var optTexts = [];
        var optLetters = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H'];
        for (var i = 0; i < q.options.length; i++) {
            optTexts.push(optLetters[i] + '. ' + q.options[i].text);
        }

        var prompt = '[' + q.type + '] ' + q.text + '\n\n' + optTexts.join('\n');

        var answered = false;
        var doneOnce = function () {
            if (answered) return;
            answered = true;
            if (_dqSafetyTimer) { clearTimeout(_dqSafetyTimer); _dqSafetyTimer = null; }
        };

        // 安全兜底：20秒后如果API还没回来，跳过此题
        _dqSafetyTimer = setTimeout(function () {
            if (!_autoExamRunning) return;
            if (!answered) {
                log('第' + num + '题 API 超时(安全兜底)，跳过', 'error');
                doneOnce();
                _autoExamIdx++;
                updateExamProg(_autoExamIdx, total);
                setTimeout(processNextExamQ, 1000);
            }
        }, 20000);

        callSiliconFlow(prompt, function (answer) {
            if (!_autoExamRunning) return;
            doneOnce();
            var choices = parseAnswer(answer, q.options);
            if (choices && choices.length > 0) {
                fillExamQ(q, choices);
                log('第' + num + '题答案: ' + choices.join(','), 'exam');
            } else {
                log('第' + num + '题解析失败: ' + answer + '，跳过', 'error');
            }
            _autoExamIdx++;
            updateExamProg(_autoExamIdx, total);
            setTimeout(processNextExamQ, 2000);
        });
    }

    function fillExamQ(q, choices) {
        for (var i = 0; i < q.options.length; i++) {
            var opt = q.options[i];
            var checked = choices.indexOf(opt.value) >= 0;
            try { opt.input.checked = checked; } catch (e) { }
            var label = opt.input.closest('label');
            if (label) {
                var strong = label.querySelector('strong');
                if (strong) strong.className = checked ? 'on' : '';
            }
        }
    }

    function submitExamForm() {
        var doc = getExamDoc();
        if (!doc) { log('考核文档丢失', 'error'); return; }

        try {
            if (typeof window.finishTest === 'function') {
                window.finishTest();
                log('finishTest() 提交', 'exam');
                _autoExamRunning = false;
                updateExamStatus('已提交');
                return;
            }
        } catch (e) { }

        try {
            if (doc.defaultView && doc.defaultView.finishTest) {
                doc.defaultView.finishTest();
                log('iframe finishTest() 提交', 'exam');
                _autoExamRunning = false;
                updateExamStatus('已提交');
                return;
            }
        } catch (e) { }

        var form = doc.getElementById('testForm');
        if (form) {
            var btn = form.querySelector('button[type="submit"]') ||
                form.querySelector('.u-main-btn') ||
                form.querySelector('input[type="submit"]') ||
                form.querySelector('button');
            if (btn) { btn.click(); log('点击提交按钮', 'exam'); }
            else { try { form.submit(); log('提交表单', 'exam'); } catch (e) { } }
        }
        _autoExamRunning = false;
        updateExamStatus('已提交');
    }

    function showExamQ(q) {
        var qEl = document.getElementById('_asExamQ');
        var optsEl = document.getElementById('_asExamOpts');
        if (qEl) qEl.textContent = q.text.substring(0, 80);
        if (optsEl) {
            var html = '';
            for (var i = 0; i < q.options.length; i++) {
                html += '<button class="_asExamOpt" data-v="' + q.options[i].value + '">' +
                    q.options[i].value + '. ' + q.options[i].text + '</button>';
            }
            optsEl.innerHTML = html;
        }
    }

    function updateExamStatus(msg) {
        var el = document.getElementById('_asExamH2');
        if (el) el.textContent = msg;
    }

    function updateExamProg(current, total) {
        var fill = document.getElementById('_asExamProgFill');
        if (fill && total > 0) {
            fill.style.width = (current / total * 100) + '%';
        }
    }

    function scanExamQuestion() {
        if (!_examMode || _paused || !_manualExam) return;
        var doc = getExamDoc();
        if (!doc) return;
        var items = doc.querySelectorAll('.m-topic-item');
        if (items.length === 0) items = doc.querySelectorAll('#topicList li');
        if (items.length === 0) { updateExamStatus('等待题目加载...'); return; }
        var qs = parseAllExamQuestions(doc);
        if (qs.length === 0) return;
        var q = qs[0];
        var h = q.text;
        if (h === _examHash) return;
        _examHash = h;
        _examSelected = [];
        _examMulti = q.multi;
        _examDoc = doc;
        showExamQ(q);
        try { if (navigator.clipboard && navigator.clipboard.writeText) navigator.clipboard.writeText(q.text).catch(function () { }); } catch (e) { }
    }

    function init() {
        if (window._asRun) return;
        window._asRun = true;
        window._asPaused = false;
        log('v12.0 启动 | ' + (CID || '?'));
        loadDB();
        spoofVis();
        makePanel();
        if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', startAll);
        else startAll();
    }

    function startAll() {
        log('启动定时器');
        refreshProgUI();

        setInterval(videoLoop, CFG.CHECK_MS);
        setInterval(function () {
            var x = 400 + Math.floor(Math.random() * 500);
            var y = 200 + Math.floor(Math.random() * 400);
            fakeMouse(x, y);
            var v = vid();
            if (v) { var r = v.getBoundingClientRect(); if (r.width > 0) fakeMouse(r.left + Math.random() * r.width, r.top + Math.random() * r.height); }
        }, CFG.MOUSE_MS + Math.random() * 10000);
        setInterval(function () {
            var dy = Math.floor(Math.random() * 30) - 15;
            window.scrollBy(0, dy);
            setTimeout(function () { window.scrollBy(0, -dy); }, 3000);
        }, CFG.SCROLL_MS + Math.random() * 15000);
        setInterval(function () {
            var areas = [
                function () { return { x: 100 + Math.random() * 200, y: 300 + Math.random() * 200 }; },
                function () { return { x: 500 + Math.random() * 300, y: 600 + Math.random() * 100 }; },
                function () { return { x: 800 + Math.random() * 200, y: 100 + Math.random() * 200 }; }
            ];
            var pos = areas[Math.floor(Math.random() * areas.length)]();
            fakeClick(pos.x, pos.y);
        }, CFG.CLICK_MS + Math.random() * 20000);
        setInterval(refreshVideoUI, 3000);
        setInterval(checkQuiz, CFG.QUIZ_MS);
        setInterval(checkCompletePopup, 3000);
        setInterval(checkStudyProgress, CFG.CHECK_MS);

        setTimeout(function () {
            if (_examMode || _autoExamRunning) {
                log('考核模式活跃，跳过初始化导航', 'exam');
                return;
            }
            var v = vid();
            var si = studyInfo();
            var aid = curAid();
            var nm = curName() || '';
            if (v && si && si.req >= 0 && si.wat >= 0) {
                var done = si.wat >= si.req;
                setStatus(aid, si.wat, si.req, done, nm);
                if (done && isKnownDone(aid)) {
                    log('当前已标记完成: ' + nm + ' 切下一节(等60秒)', 'vid');
                    _promptDone = true;
                    setTimeout(function () {
                        _promptDone = false;
                        nextVideo();
                    }, CFG.COMPLETE_WAIT);
                } else if (done) {
                    log('当前已完成: ' + nm + ' 切下一节(等60秒)', 'vid');
                    _promptDone = true;
                    setStatus(aid, si.wat, si.req, true, nm);
                    setTimeout(function () {
                        _promptDone = false;
                        nextVideo();
                    }, CFG.COMPLETE_WAIT);
                } else {
                    log('当前未完成: ' + nm + ' (' + si.wat + '/' + si.req + 'min) 开始播放', 'vid');
                    resume();
                }
            } else if (!v && !si) {
                if (isExamPage() || _examMode) {
                    log('考核页面，等待手动操作', 'exam');
                    return;
                }
                var firstAid = findFirstIncomplete();
                if (firstAid && CID && typeof studyCourse === 'function') {
                    log('课程列表页，自动开始: ' + (nameById(firstAid) || firstAid.substring(0, 12)), 'vid');
                    studyCourse(CID, '', firstAid);
                    schedResume();
                } else if (aid && CID && typeof studyCourse === 'function') {
                    log('课程列表页，点击第一节', 'vid');
                    studyCourse(CID, '', aid);
                    schedResume();
                } else {
                    log('未找到活动ID，等待手动操作', 'warn');
                }
            } else {
                resume();
            }
        }, CFG.INIT_MS);

        var origSC = window.studyCourse;
        if (origSC && typeof origSC === 'function') {
            window.studyCourse = function (cid, p2, aid) {
                log('切换: ' + aid, 'vid');
                _switching = true;
                _endDone = false;
                _promptDone = false;
                if (_completeTimer) { clearTimeout(_completeTimer); _completeTimer = null; }
                if (_examMode && aid !== getExamAid()) exitExamMode();
                if (aid === getExamAid()) enterExamMode();
                var ret = origSC(cid, p2, aid);
                schedResume();
                return ret;
            };
            log('劫持 studyCourse()');
        }

        setInterval(function () {
            if (_paused) return;
            var v = vid(); if (!v || !v.duration) return;
            var ci = curAid(), ids = allAids(), idx = ids.indexOf(ci);
            log(fmt(v.currentTime) + '/' + fmt(v.duration) + ' | ' + (idx + 1) + '/' + ids.length + '节', 'vid');
        }, 60000);
        log('就绪');
    }

    init();

    function parseAnswer(text, options) {
        text = text.toUpperCase();
        var letters = [];
        var re = /\\b([A-E])\\b/g;
        var m;
        while ((m = re.exec(text)) !== null) {
            letters.push(m[1]);
        }
        if (letters.length === 0) {
            if (text.indexOf('正确') >= 0 && text.indexOf('错误') < 0) letters.push('A');
            if (text.indexOf('错误') >= 0 && text.indexOf('正确') < 0) letters.push('B');
        }
        if (letters.length === 0) {
            var shortMatch = text.match(/^([A-E]{1,5})$/);
            if (shortMatch) letters = shortMatch[1].split('');
        }
        var choices = [];
        var seen = {};
        for (var i = 0; i < letters.length; i++) {
            var l = letters[i];
            if (seen[l]) continue;
            seen[l] = true;
            var idx = l.charCodeAt(0) - 65;
            if (idx < options.length) {
                choices.push('Choice' + idx);
            }
        }
        return choices;
    }
})();