(function(){

/* ═══ 职业培训模块 v13 · 双Tab体系（能碳管理+数字化转型）+ AI产品经理课程 + 免费课程（2026-08-30）═══ */

var app=document.getElementById('sxai-tra-app');

if(!app)return;



/* 样式（数晰绿主题，与标准指南统一） */

var st=document.createElement('style');

st.textContent=[

'.tra-wrap{max-width:1150px;margin:0 auto;padding:20px 16px;font-family:inherit}',

'.tra-hero{background:linear-gradient(135deg,#065f46,#0e7490);color:#fff;border-radius:14px;padding:28px 30px;margin-bottom:22px}',

'.tra-hero h1{margin:0 0 8px;font-size:24px;font-weight:800}',

'.tra-hero p{margin:0;opacity:.92;font-size:14px}',

'.tra-cards{font-size:0;margin-bottom:26px}#sxai-tra-app .tra-cards .tra-card{display:inline-block!important;width:49%!important;vertical-align:top;font-size:14px;box-sizing:border-box;margin:0 0.5% 16px!important}@media(max-width:760px){#sxai-tra-app .tra-cards .tra-card{display:block!important;width:100%!important;margin:0 0 14px!important}}',

'.tra-card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;overflow:hidden;transition:.2s;cursor:pointer;position:relative}',

'.tra-card:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(6,95,70,.15)}',

'.tra-card .tc-head{padding:14px 12px;font-size:32px;text-align:center}',

'.tra-card .tc-body{padding:12px 16px 16px}',

'.tra-card h3{margin:0 0 6px;font-size:16px;font-weight:700;color:#1f2937}',

'.tra-card p{margin:0 0 10px;font-size:12.5px;color:#6b7280;line-height:1.6}',

'.tra-card .tc-meta{display:flex;gap:12px;font-size:11.5px;color:#9ca3af;margin-bottom:12px}',

'.tc-btn{width:100%;padding:8px;border:none;border-radius:8px;color:#fff;font-size:13px;font-weight:700;cursor:pointer}',

/* 学习页布局 */

'.tra-learn{display:grid;grid-template-columns:270px minmax(0,1fr);gap:16px}',

'@media(max-width:900px){.tra-learn{grid-template-columns:1fr}}',

'.tra-side{background:#fff;border:1px solid #e5e7eb;border-radius:12px;overflow:hidden;height:max-content;position:sticky;top:80px}',

'.tra-side .ts-hd{padding:14px 16px;border-bottom:1px solid #f0f0f0;background:#f0fdf6}',

'.tra-side .ts-list{max-height:66vh;overflow-y:auto;padding:8px}',

'.ts-item{display:flex;align-items:center;gap:8px;padding:9px 12px;border-radius:8px;font-size:13px;color:#4b5563;cursor:pointer;margin-bottom:2px}',

'.ts-item:hover{background:#f0fdf6}',

'.ts-item.on{background:#065f46;color:#fff;font-weight:600}',

'.ts-item.done:not(.on){color:#059669}.ts-item.done:not(.on):after{content:"✓";margin-left:auto;font-weight:700}',

'.tra-main{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:26px 30px;min-height:60vh}',

'.tra-main h2.ct{font-size:21px;font-weight:800;color:#111;margin:0 0 4px}',

'.tra-main .ct-sub{font-size:12.5px;color:#9ca3af;margin-bottom:20px}',

'.ch-body{font-size:14px;line-height:1.85;color:#374151}',

'.ch-body h2{font-size:16.5px;font-weight:700;color:#065f46;margin:22px 0 10px;border-left:4px solid #10b981;padding-left:10px}',

'.ch-body table{border-collapse:collapse;width:100%;margin:12px 0;font-size:13px}',

'.ch-body th{background:#f0fdf6;padding:8px 11px;border:1px solid #d1fae5;text-align:left;color:#065f46}',

'.ch-body td{padding:8px 11px;border:1px solid #eef2f0}',

'.ch-body pre{background:#f8fafc;border-radius:8px;padding:13px 15px;font-size:12.5px;line-height:1.75;overflow-x:auto;white-space:pre-wrap}',

'.ch-body .tip{background:#f0fdf6;border-left:4px solid #10b981;border-radius:8px;padding:11px 14px;margin:12px 0;font-size:13px}',

'.ch-body .warn{background:#fffbeb;border-left:4px solid #f59e0b;border-radius:8px;padding:11px 14px;margin:12px 0;font-size:13px}',

'.ch-body .case{background:#eff6ff;border-left:4px solid #2563eb;border-radius:8px;padding:12px 15px;margin:12px 0;font-size:13px}',

/* 题目区 */

'.qz-hd{display:flex;justify-content:space-between;align-items:center;margin:28px 0 14px;padding-top:18px;border-top:2px solid #f0fdf4}',

'.qz-hd h3{margin:0;font-size:16px;font-weight:800;color:#111}',

'.qb{border:1px solid #e5e7eb;border-left:4px solid #10b981;border-radius:10px;padding:14px 16px;margin-bottom:12px;background:#fafcfa}',

'.qb .qt{font-size:14px;font-weight:600;color:#1f2937;margin-bottom:10px}',

'.opt{display:block;padding:9px 13px;border:1px solid #e5e7eb;border-radius:8px;margin-bottom:7px;font-size:13.5px;cursor:pointer;transition:.15s;color:#374151;background:#fff}',

'.opt:hover{border-color:#10b981;background:#f0fdf6}',

'.opt.sel{border-color:#065f46;background:#065f46;color:#fff;font-weight:600}',

'.opt.right{border-color:#059669;background:#d1fae5;color:#065f46;font-weight:700}',

'.opt.wrong{border-color:#dc2626;background:#fee2e2;color:#991b1b}',

'.ana{margin-top:10px;padding:11px 13px;background:#fefce8;border:1px solid #fde68a;border-radius:8px;font-size:13px;color:#713f12;display:none}',

'.ana b{color:#92400e}',

'.lockbox{text-align:center;background:#f8fafc;border:1px dashed #cbd5e1;border-radius:12px;padding:34px 20px;margin:12px 0}',

'.lockbox .lk-ic{font-size:36px;margin-bottom:8px}',

'.lockbox p{color:#64748b;font-size:13.5px;margin:0 0 14px}',

'.lk-btn{display:inline-block;padding:9px 22px;margin:0 5px;border-radius:8px;font-size:13.5px;font-weight:700;text-decoration:none;color:#fff!important}',

'.navbtns{display:flex;justify-content:space-between;margin-top:26px;padding-top:18px;border-top:1px solid #f0f0f0}',

'.nb{padding:9px 18px;border-radius:8px;border:1px solid #e5e7eb;background:#fff;color:#374151;font-size:13.5px;cursor:pointer;text-decoration:none!important}',

'.nb.pri{background:#065f46;border-color:#065f46;color:#fff}',

'.nb:disabled{opacity:.4;cursor:not-allowed}',

/* 学习中心 */

'.sc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}',

'.sc-box{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:20px}',

'.prog-bar{height:8px;background:#e5e7eb;border-radius:6px;overflow:hidden;flex:1}',

'.prog-bar i{display:block;height:100%;background:linear-gradient(90deg,#059669,#10b981)}',

'.reg-band{background:linear-gradient(135deg,#fef3c7,#fde68a);border:1px solid #f59e0b;border-radius:12px;padding:14px 20px;margin:20px 0;font-size:13.5px;color:#78350f;display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}',

'.reg-band a{background:#d97706;color:#fff;padding:8px 18px;border-radius:8px;text-decoration:none!important;font-weight:700;white-space:nowrap}',

'.tra-card .tc-btns{padding:0 16px 16px;display:flex;flex-direction:column;gap:8px}',

'.tra-card .tc-btns .tc-btn{font-size:12.5px}',

'.tc-btn.tc-buy{background:linear-gradient(135deg,#f59e0b,#d97706);font-size:14px}',

'.tc-btn.tc-buy s{opacity:.72;font-weight:500;margin-right:2px}',

'.tc-btn.tc-outline{background:#fff!important;border:1.5px solid #d1d5db;color:#6b7280!important;font-weight:600}',

'/* 课程分类Tab */ .tra-tabs{display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap} .tra-tab{padding:10px 22px;border-radius:10px;border:1.5px solid #e5e7eb;background:#fff;color:#6b7280;font-size:14px;font-weight:600;cursor:pointer;transition:.15s} .tra-tab:hover{border-color:#065f46;color:#065f46} .tra-tab.active{background:linear-gradient(135deg,#065f46,#0e7490);color:#fff;border-color:transparent} .tra-tab .tab-count{display:inline-block;margin-left:6px;padding:1px 8px;border-radius:10px;font-size:11px;background:rgba(255,255,255,.2)} .tra-tab:not(.active) .tab-count{background:#f3f4f6;color:#9ca3af} .tra-free-badge{display:inline-block;margin-left:8px;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:700;background:#dbeafe;color:#1d4ed8}','.tc-owned{font-size:12px;color:#059669;font-weight:700;text-align:center;padding:9px;border-radius:8px;background:#f0fdf6;border:1px dashed #10b981}'

].join('\n');

document.head.appendChild(st);



/* ── 权限引擎（会员体系对接）── */

function wpUser(){return window.__sxaiWPUser||0}

function memLevel(){

  var M=window.__sxaiMember;

  if(M&&M.level)return M.level==='free'&&wpUser()?'user':M.level; /* WP登录无等级标记=注册用户 */

  return window.sxaiML||window.sxaiMemberLevel||(wpUser()?'user':'free');

}

function isLogin(){return !!wpUser()||memLevel()!=='free'}

function fullRight(){

  var M=window.__sxaiMember;

  if(M){return M.traFull===true||['svip','pro','admin','training_pack'].indexOf(M.level)>-1;}

  return ['svip','pro','admin','training_pack'].indexOf(memLevel())>-1||window.__sxaiTrainingFull===true;

}

function courseOwn(slug){

  var A=window.__sxaiCourseAccess||{};

  return !!A[slug]&&parseInt(A[slug])*1000>Date.now();

}

function courseFull(slug){return fullRight()||courseOwn(slug)}

function previewAna(slug){

  if(courseFull(slug))return 999;

  var l=memLevel();

  if(l==='lite')return 3;           /* 轻享会员：前3章 */

  if(isLogin()&&(l==='free'||l==='user'))return 3; /* 注册免费用户：前3章体验 */

  return 0;                          /* 游客 */

}

function anaVisible(slug,chapterNo){ /* 解析可见性：单课/会员全量，登录+前N章体验 */

  if(courseFull(slug))return true;

  if(!isLogin())return false;

  return chapterNo<=previewAna(slug);

}



/* ── 状态 ── */

var PERCOURSE={carbon_manager:4028,carbon_verifier:4029,carbon_trader:4030,carbon_consultant:4064};

window.traBuy=function(pid){

  if(!isLogin()){

    showRegWall('购买课程需要先注册 / 登录','注册免费学员即可购买单课（¥99/年）；已注册用户请直接登录后购买。');

    return;

  }

  if(typeof payNow==='function'){payNow(pid);}else{showRegWall('支付组件加载中','请刷新页面后重试');}

};

var S={view:'list',course:null,chIdx:0,tab:'carbon'};

/* ═══ 学习跟踪 ═══ */
var LR={
  heartbeatTimer:null,
  startTime:0,
  lastDuration:0,
  realLearners:{},
  learnersLoaded:false,
  statsData:null,
  isAdmin:false
};

/* 检查是否是admin用户 */
function lrCheckAdmin(){
  try{
    var M=window.__sxaiMember;
    if(M&&M.level==='admin'){LR.isAdmin=true;return true;}
    if(window.sxaiML==='admin'||window.sxaiMemberLevel==='admin'){LR.isAdmin=true;return true;}
    if(wpUser()&&window.__sxaiWPUser&&window.__sxaiWPUser.roles){
      if(window.__sxaiWPUser.roles.indexOf('administrator')>-1){LR.isAdmin=true;return true;}
    }
  }catch(e){}
  return false;
}

/* 发送学习心跳 */
function lrSendHeartbeat(duration){
  if(!S.course)return;
  var c=TRA.courses[S.course];
  if(!c)return;
  var ch=c.chapters[S.chIdx];
  var doneN=c.chapters.filter(function(x){return U.done[S.course+'_'+x.no]}).length;
  
  var data={
    course_key:S.course,
    chapter_no:ch?ch.no:0,
    duration:Math.round(duration),
    progress:doneN,
    current_chapter:S.chIdx
  };
  
  try{
    fetch('/wp-admin/admin-ajax.php?action=sxai_lr_heartbeat',{
      method:'POST',
      headers:{'Content-Type':'application/json'},
      body:JSON.stringify(data),
      credentials:'same-origin'
    }).catch(function(e){});
  }catch(e){}
}

/* 启动学习心跳 */
function lrStartHeartbeat(){
  lrStopHeartbeat();
  LR.startTime=Date.now();
  LR.lastDuration=0;
  LR.heartbeatTimer=setInterval(function(){
    var duration=(Date.now()-LR.startTime)/1000-LR.lastDuration;
    if(duration>=5){
      lrSendHeartbeat(duration);
      LR.lastDuration+=duration;
    }
  },30000);
}

/* 停止学习心跳 */
function lrStopHeartbeat(){
  if(LR.heartbeatTimer){
    clearInterval(LR.heartbeatTimer);
    LR.heartbeatTimer=null;
  }
  if(LR.startTime>0){
    var duration=(Date.now()-LR.startTime)/1000-LR.lastDuration;
    if(duration>=3){
      lrSendHeartbeat(duration);
    }
    LR.startTime=0;
    LR.lastDuration=0;
  }
}

/* 页面卸载时上报 */
window.addEventListener('beforeunload',function(){
  if(S.view==='course'){
    lrStopHeartbeat();
  }
});

/* 获取真实学习人数 */
function lrLoadLearners(){
  if(LR.learnersLoaded)return;
  try{
    fetch('/wp-admin/admin-ajax.php?action=sxai_lr_course_learners',{
      credentials:'same-origin'
    }).then(function(r){return r.json();}).then(function(data){
      if(data&&data.success&&data.data&&data.data.learners){
        LR.realLearners=data.data.learners;
      }
      LR.learnersLoaded=true;
    }).catch(function(){LR.learnersLoaded=true;});
  }catch(e){LR.learnersLoaded=true;}
}

/* 获取admin统计数据 */
function lrLoadStats(){
  if(!LR.isAdmin)return;
  try{
    fetch('/wp-admin/admin-ajax.php?action=sxai_lr_stats',{
      credentials:'same-origin'
    }).then(function(r){return r.json();}).then(function(data){
      if(data&&data.success&&data.data){
        LR.statsData=data.data;
        if(S.view==='list')render();
      }
    }).catch(function(){});
  }catch(e){}
}

/* 格式化时长 */
function lrFormatDuration(seconds){
  seconds=Math.round(seconds);
  if(seconds<60)return seconds+'秒';
  var m=Math.floor(seconds/60);
  var s=seconds%60;
  if(m<60)return m+'分'+(s?s+'秒':'');
  var h=Math.floor(m/60);
  m=m%60;
  return h+'时'+m+'分';
}

/* 渲染Admin学习看板 */
function lrRenderStatsBoard(){
  var d=LR.statsData;
  if(!d){
    return '<div id="lr-stats-board" style="background:linear-gradient(135deg,#1e3a5f,#0f52ba);color:#fff;border-radius:14px;padding:24px;margin-bottom:20px">'
      +'<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:16px">'
      +'<h3 style="margin:0;font-size:17px">📊 学习数据看板（仅管理员可见）</h3>'
      +'<button onclick="lrLoadStats();render();" style="background:rgba(255,255,255,.2);border:none;color:#fff;padding:6px 14px;border-radius:6px;cursor:pointer;font-size:12px">🔄 刷新数据</button>'
      +'</div>'
      +'<div style="text-align:center;padding:20px;color:rgba(255,255,255,.7);font-size:14px">数据加载中…点击上方刷新按钮获取最新统计</div>'
      +'</div>';
  }
  
  var overall=d.overall||{};
  var byCourse=d.by_course||[];
  
  var courseRows='';
  byCourse.forEach(function(c){
    var courseInfo=TRA.courses[c.course_key];
    var name=courseInfo?(courseInfo.icon+' '+courseInfo.name):c.course_key;
    courseRows+='<tr>'
      +'<td style="padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.1);font-size:13px">'+name+'</td>'
      +'<td style="padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.1);text-align:center;font-size:13px"><b style="color:#4ade80">'+c.active_learners+'</b></td>'
      +'<td style="padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.1);text-align:center;font-size:13px">'+lrFormatDuration(c.total_duration)+'</td>'
      +'<td style="padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.1);text-align:center;font-size:13px">'+lrFormatDuration(c.avg_duration)+'</td>'
      +'</tr>';
  });
  
  if(!courseRows){
    courseRows='<tr><td colspan="4" style="padding:20px;text-align:center;color:rgba(255,255,255,.6);font-size:13px">暂无学习记录（累计时长≥1分钟才纳入统计）</td></tr>';
  }
  
  return '<div id="lr-stats-board" style="background:linear-gradient(135deg,#1e3a5f,#0f52ba);color:#fff;border-radius:14px;padding:24px;margin-bottom:20px">'
    +'<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:16px">'
    +'<h3 style="margin:0;font-size:17px">📊 学习数据看板（仅管理员可见）</h3>'
    +'<button onclick="lrLoadStats();setTimeout(function(){render()},1000);" style="background:rgba(255,255,255,.2);border:none;color:#fff;padding:6px 14px;border-radius:6px;cursor:pointer;font-size:12px">🔄 刷新数据</button>'
    +'</div>'
    
    /* 总体统计卡片 */
    +'<div style="display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-bottom:18px">'
    +'<div style="background:rgba(255,255,255,.1);border-radius:10px;padding:14px;text-align:center">'
    +'<div style="font-size:24px;font-weight:800;color:#4ade80">'+(overall.active_learners||0)+'</div>'
    +'<div style="font-size:12px;color:rgba(255,255,255,.7);margin-top:4px">有效学习人数</div></div>'
    +'<div style="background:rgba(255,255,255,.1);border-radius:10px;padding:14px;text-align:center">'
    +'<div style="font-size:24px;font-weight:800;color:#60a5fa">'+(overall.registered_users||0)+'</div>'
    +'<div style="font-size:12px;color:rgba(255,255,255,.7);margin-top:4px">注册用户</div></div>'
    +'<div style="background:rgba(255,255,255,.1);border-radius:10px;padding:14px;text-align:center">'
    +'<div style="font-size:24px;font-weight:800;color:#fbbf24">'+(overall.visitors||0)+'</div>'
    +'<div style="font-size:12px;color:rgba(255,255,255,.7);margin-top:4px">游客学习</div></div>'
    +'<div style="background:rgba(255,255,255,.1);border-radius:10px;padding:14px;text-align:center">'
    +'<div style="font-size:24px;font-weight:800;color:#f472b6">'+lrFormatDuration(overall.total_duration||0)+'</div>'
    +'<div style="font-size:12px;color:rgba(255,255,255,.7);margin-top:4px">累计学习时长</div></div>'
    +'</div>'
    
    /* 分课程统计表 */
    +'<div style="background:rgba(255,255,255,.08);border-radius:10px;overflow:hidden">'
    +'<table style="width:100%;border-collapse:collapse">'
    +'<thead><tr style="background:rgba(255,255,255,.15)">'
    +'<th style="padding:10px 12px;text-align:left;font-size:13px;font-weight:700">课程</th>'
    +'<th style="padding:10px 12px;text-align:center;font-size:13px;font-weight:700">学习人数</th>'
    +'<th style="padding:10px 12px;text-align:center;font-size:13px;font-weight:700">累计时长</th>'
    +'<th style="padding:10px 12px;text-align:center;font-size:13px;font-weight:700">人均时长</th>'
    +'</tr></thead><tbody>'+courseRows+'</tbody></table>'
    +'</div>'
    
    +'<div style="margin-top:12px;font-size:11.5px;color:rgba(255,255,255,.5)">💡 统计规则：累计学习时长低于1分钟的记录不纳入学习人数统计；数据每30秒自动上报一次</div>'
    +'</div>';
}

/* 课程分类映射 */

var CARBON_COURSES=['carbon_manager','carbon_verifier','carbon_trader','carbon_consultant'];

var DIGITAL_COURSES=['ai_product_manager'];

function getCoursesByTab(tab){return tab==='digital'?DIGITAL_COURSES:CARBON_COURSES;}

window.switchTab=function(tab){S.tab=tab;render();}

function uKey(){return 'tra_u_'+(wpUser()||'anon')}

function loadU(){try{return JSON.parse(localStorage.getItem(uKey())||'{}')}catch(e){return{}}}

function saveU(d){try{localStorage.setItem(uKey(),JSON.stringify(d))}catch(e){}}

var U=loadU();

U.done=U.done||{};U.ans=U.ans||{};U.err=U.err||[];



/* ── 渲染 ── */

function esc(s){return String(s==null?'':s).replace(/&/g,'&amp;').replace(/</g,'&lt;')}

/* 计算课程学习人数：真实学习人数 + 80~120随机数 */
function getLearners(key){
  var hash=0;
  for(var i=0;i<key.length;i++){hash=((hash<<5)-hash)+key.charCodeAt(i);hash|=0;}
  var rand=80+Math.abs(hash)%41; /* 80~120 */
  var real=LR.realLearners[key]||0;
  return real+rand;
}


function route(){

  var h=location.hash||'#/list';

  var m=h.match(/^#\/course\/(\w+)/);

  if(m&&TRA.courses[m[1]]){S.course=m[1];S.view='course';

    var cm=h.match(/chg(\d+)/);S.chIdx=cm?parseInt(cm[1]):lastIdx(m[1]);

  }else if(h.indexOf('#/center')===0)S.view='center';

  else S.view='list';

  render();

}

function lastIdx(k){var u=loadU();if(u.last&&u.last[k]!=null)return u.last[k];return 0}

function go(h){location.hash=h}



function render(){

  if(S.view==='list'){lrStopHeartbeat();renderList();}

  else if(S.view==='course'){renderLearn();lrStartHeartbeat();}

  else {lrStopHeartbeat();renderCenter();}

}



/* ═══ 列表页 ═══ */

function renderList(){

  /* Tab切换UI */

  var carbonCount=CARBON_COURSES.filter(function(k){return TRA.courses[k]}).length;

  var digitalCount=DIGITAL_COURSES.filter(function(k){return TRA.courses[k]}).length;

  var tabsHtml='<div class="tra-tabs">'

    +'<div class="tra-tab'+(S.tab==='carbon'?' active':'')+'" onclick="switchTab(\'carbon\')">🌱 能碳管理<span class="tab-count">'+carbonCount+'门</span></div>'

    +'<div class="tra-tab'+(S.tab==='digital'?' active':'')+'" onclick="switchTab(\'digital\')">💡 数字化转型<span class="tab-count">'+digitalCount+'门</span><span class="tra-free-badge">免费</span></div>'

    +'</div>';



  var cards='';

  var courseKeys=getCoursesByTab(S.tab);

  for(var i=0;i<courseKeys.length;i++){

    var k=courseKeys[i];

    if(!TRA.courses[k])continue;

    var c=TRA.courses[k];

    var doneN=c.chapters.filter(function(ch){return U.done[k+'_'+ch.no]}).length;

    var isDigital=c.category==='digital'||DIGITAL_COURSES.indexOf(k)>-1;

    cards+='<div class="tra-card" onclick="location.hash=\'#/course/'+k+'\'">'

      +'<div class="tc-head" style="background:'+c.color+'14">'+c.icon+(isDigital?'<span style="position:absolute;top:10px;right:10px;padding:3px 10px;border-radius:6px;font-size:11px;font-weight:700;background:#dbeafe;color:#1d4ed8">免费</span>':'')+'</div>'

      +'<div class="tc-body"><h3>'+c.name+'</h3><p>'+c.brief+'</p>'

      +'<div class="tc-meta"><span>📑 '+c.chapters.length+'章</span><span>⏱ '+c.hours+'学时</span><span style="color:#d97706">👥 '+getLearners(k)+'人已学习</span>'+(doneN?'<span style="color:#059669">已学'+doneN+'/'+c.chapters.length+'</span>':'')+'</div>'

      +'<div class="tc-btns">'

      +(isDigital

        ?'<button class="tc-btn" style="background:'+c.color+'">免费学习 →</button><div class="tc-owned" style="background:#eff6ff;border-color:#93c5fd;color:#1d4ed8">✓ 数字化转型课程全部免费</div>'

        :(courseFull(k)

          ?'<button class="tc-btn" style="background:'+c.color+'">继续学习 →</button><div class="tc-owned">✓ 已拥有本课程完整权益</div>'

          :'<button class="tc-btn" style="background:#fff;color:'+c.color+';border:1.5px solid '+c.color+'">开始学习 →</button>'

          +'<button class="tc-btn tc-buy" onclick="event.stopPropagation();traBuy('+PERCOURSE[k]+')">单课单独购 <s>¥299</s> <b>¥99/年</b></button>'))

      +'<button class="tc-btn tc-outline" onclick="event.stopPropagation();showOutline(\''+k+'\')">📋 课程大纲</button>'

      +'</div></div></div>';

  }

  var loginBand=isLogin()

    ?'<div class="reg-band" style="background:#f0fdf6;border-color:#10b981;color:#065f46"><span>🟢 已登录（'+(fullRight()?'完整培训权益':memLevel()==='lite'?'轻享·前3章解析':'基础·解析需升级')+'）｜学习数据自动保存中</span></div>'

    :'<div class="reg-band"><span>🎁 注册免费学员：解锁前3章习题解析 + 错题本 + 学习进度云保存。会员可解锁全部章节解析与模拟试卷。</span><a href="/zhikua/vip-register/?from=training">免费注册</a></div>';

  var heroTitle=S.tab==='digital'?'💡 数字化转型课程':'📝 职业培训课程';

  var heroDesc=S.tab==='digital'

    ?'AI产品经理 · 企业Agent搭建 · 工业物联网实践 三大数字化转型实战课程｜全部免费学习，助力制造业数字化人才培养'

    :'碳排放管理员 · 核查员 · 交易员 · 碳咨询顾问 四大双碳岗位系统培训｜图文教程 + 章节练习 + 智能错题本';

  app.innerHTML='<div class="tra-wrap">'

    +'<div class="tra-hero"><h1>'+heroTitle+'</h1><p>'+heroDesc+'</p></div>'

    +loginBand

    +tabsHtml

    +'<div class="tra-cards">'+cards+'</div>'

    /* ═══ Admin学习看板（仅管理员可见）═══ */
    +(LR.isAdmin ? lrRenderStatsBoard() : '')

    +'<div id="carbon-benefit" style="background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:20px 24px">'

    +'<h3 style="margin:0 0 10px;font-size:15px">📖 使用说明与权益对照</h3>'

    +'<table style="width:100%;border-collapse:collapse;font-size:13px"><tr><th style="text-align:left;padding:7px 10px;background:#f0fdf6;color:#065f46;border:1px solid #d1fae5">能力</th><th style="text-align:left;padding:7px 10px;background:#f0fdf6;color:#065f46;border:1px solid #d1fae5">游客</th><th style="text-align:left;padding:7px 10px;background:#f0fdf6;color:#065f46;border:1px solid #d1fae5">注册用户</th><th style="text-align:left;padding:7px 10px;background:#f0fdf6;color:#065f46;border:1px solid #d1fae5">专业/SVIP会员</th></tr>'

    +'<tr><td style="padding:7px 10px;border:1px solid #f0f0f0">能碳管理课程正文</td><td style="text-align:center;border:1px solid #f0f0f0">第1章试读</td><td style="text-align:center;border:1px solid #f0f0f0">✅</td><td style="text-align:center;border:1px solid #f0f0f0">✅</td></tr>'

    +'<tr><td style="padding:7px 10px;border:1px solid #f0f0f0">数字化转型课程</td><td style="text-align:center;border:1px solid #f0f0f0">✅ 全部免费</td><td style="text-align:center;border:1px solid #f0f0f0">✅ 全部免费</td><td style="text-align:center;border:1px solid #f0f0f0">✅ 全部免费</td></tr>'

    +'<tr><td style="padding:7px 10px;border:1px solid #f0f0f0">单课购买 ¥99/年</td><td style="text-align:center;border:1px solid #f0f0f0">—</td><td style="text-align:center;border:1px solid #f0f0f0">✅ 按课程</td><td style="text-align:center;border:1px solid #f0f0f0">专业/SVIP 含全部</td></tr>'

    +'<tr><td style="padding:7px 10px;border:1px solid #f0f0f0">章节做题</td><td style="text-align:center;border:1px solid #f0f0f0">✅</td><td style="text-align:center;border:1px solid #f0f0f0">✅</td><td style="text-align:center;border:1px solid #f0f0f0">✅</td></tr>'

    +'<tr><td style="padding:7px 10px;border:1px solid #f0f0f0">答案解析</td><td style="text-align:center;border:1px solid #f0f0f0">🔒</td><td style="text-align:center;border:1px solid #f0f0f0">前3章</td><td style="text-align:center;border:1px solid #f0f0f0">全部</td></tr>'

    +'<tr><td style="padding:7px 10px;border:1px solid #f0f0f0">进度/错题本/完成徽章</td><td style="text-align:center;border:1px solid #f0f0f0">🔒</td><td style="text-align:center;border:1px solid #f0f0f0">✅</td><td style="text-align:center;border:1px solid #f0f0f0">✅</td></tr></table>'

    +'<p style="font-size:12px;color:#9ca3af;margin:10px 0 0">💡 会员方案：<a href="/zhikua/" style="color:#059669">查看智研社会员权益</a>｜企业批量培训账号请联系客服</p>'

    +'</div>'

    +'<div id="digital-benefit" style="display:none;background:#eff6ff;border:1px solid #bfdbfe;border-radius:12px;padding:24px">'

    +'<h3 style="margin:0 0 12px;font-size:16px;color:#1e40af">💡 数字化转型课程说明</h3>'

    +'<p style="font-size:14px;color:#1e3a8a;line-height:1.8;margin:0 0 12px">数字化转型板块所有课程<b>全部免费开放</b>，无需注册即可学习完整课程内容。我们希望通过免费课程，帮助更多制造业从业者掌握数字化转型技能，同时了解数晰智能的软件产品能力。</p>'

    +'<div style="display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-top:16px">'

    +'<div style="background:#fff;border-radius:8px;padding:14px"><div style="font-size:24px;margin-bottom:6px">🤖</div><div style="font-weight:700;color:#1e40af;font-size:14px">AI产品经理</div><div style="font-size:12px;color:#64748b;margin-top:4px">44章·60学时·零门槛转行</div></div>'

    +'<div style="background:#fff;border-radius:8px;padding:14px"><div style="font-size:24px;margin-bottom:6px">🔧</div><div style="font-weight:700;color:#1e40af;font-size:14px">企业Agent搭建</div><div style="font-size:12px;color:#64748b;margin-top:4px">即将上线·对接数晰AI知识库</div></div>'

    +'<div style="background:#fff;border-radius:8px;padding:14px"><div style="font-size:24px;margin-bottom:6px">🏭</div><div style="font-weight:700;color:#1e40af;font-size:14px">工业物联网实践</div><div style="font-size:12px;color:#64748b;margin-top:4px">即将上线·对接数晰IoT平台</div></div>'

    +'</div>'

    +'<p style="font-size:12px;color:#64748b;margin:16px 0 0">💡 课程学习中遇到问题，或希望了解数晰智能软件产品，欢迎<a href="/contact/" style="color:#2563eb">联系我们</a>。</p>'

    +'</div></div>';

    /* ═══ 强制两列布局：JS直接设置元素样式，不依赖CSS注入 ═══ */

    try{

        var _box=app.querySelector('.tra-cards');

        if(_box){

            _box.style.fontSize='0';

            var _mob=(window.innerWidth||document.documentElement.clientWidth)<=760;

            var _cls=_box.querySelectorAll('.tra-card');

            for(var _k=0;_k<_cls.length;_k++){

                var _d=_cls[_k];

                _d.style.cssText='display:'+(_mob?'block':'inline-block')+';width:'+(_mob?'100%':'49%')+';vertical-align:top;box-sizing:border-box;margin:'+(_mob?'0 0 14px':'0 0.5% 16px')+';font-size:14px;'+_d.style.cssText;

            }

        }

    }catch(e){}

    /* 根据tab显示/隐藏底部说明 */

    try{

        var cb=document.getElementById('carbon-benefit');

        var db=document.getElementById('digital-benefit');

        if(cb)cb.style.display=S.tab==='carbon'?'block':'none';

        if(db)db.style.display=S.tab==='digital'?'block':'none';

    }catch(e){}

}



/* ═══ 学习页 ═══ */

function renderLearn(){

  var c=TRA.courses[S.course], ch=c.chapters[S.chIdx];

  var isDigitalCourse=DIGITAL_COURSES.indexOf(S.course)>-1;

  if(!isLogin()&&S.chIdx>2&&!isDigitalCourse){

    app.innerHTML='<div class="tra-wrap"><div class="lockbox"><div class="lk-ic">🔐</div><h3 style="margin:0 0 10px">第'+ch.no+'章起需登录学习</h3><p>游客可试读前3章。注册免费解锁全部正文与前3章解析；本课程单独年卡 ¥99 立即解锁全部解析、模拟试卷与结业证书。</p>'

     +'<a class="lk-btn" style="background:#d97706" href="/zhikua/vip-register/?from=tra-lock">免费注册 / 登录</a>'

     +'<a class="lk-btn" style="background:#2563eb" href="javascript:payNow('+PERCOURSE[S.course]+')">单课解锁 ¥99/年</a>'

     +'<p style="margin-top:14px"><a href="'+location.pathname+'#/list" style="color:#64748b;font-size:12.5px">返回课程列表 →</a></p></div></div>';

    window.scrollTo(0,0);return;

  }

  var doneList='';

  c.chapters.forEach(function(x,i){

    doneList+='<div class="ts-item'+(i===S.chIdx?' on':'')+(U.done[S.course+'_'+x.no]?' done':'')+'" onclick="location.hash=\'#/course/'+S.course+'/chg'+i+'\'">'+(i+1)+'. '+x.title+'</div>';

  });

  app.innerHTML='<div class="tra-wrap"><div class="tra-learn">'

    +'<aside class="tra-side"><div class="ts-hd"><b style="color:#065f46">'+c.icon+' '+c.name+'</b><div style="font-size:11.5px;color:#9ca3af;margin-top:3px">'+c.chapters.length+'章 · '+c.hours+'学时</div></div>'

    +'<div class="ts-list">'+doneList+'</div>'

    +'<div style="padding:12px;border-top:1px solid #f0f0f0"><a href="'+location.pathname+'#/center" style="font-size:13px;color:#059669;text-decoration:none">📊 我的学习中心</a></div></aside>'

    +'<main class="tra-main">'

    +'<h2 class="ct">第'+ch.no+'章 '+ch.title+'</h2>'

    +'<div class="ct-sub">'+c.name+' · 章节 '+(S.chIdx+1)+'/'+c.chapters.length+'</div>'

    +'<div class="ch-body">'+ch.content+'</div>'

    +renderQuiz(c,ch)

    +'<div class="navbtns">'

    +(S.chIdx>2?'<button class="nb" onclick="location.hash=\'#/course/'+S.course+'/chg'+(S.chIdx-1)+'\'">← 上一章</button>':'<button class="nb" disabled>← 上一章</button>')

    +(S.chIdx<c.chapters.length-1?'<button class="nb pri" onclick="location.hash=\'#/course/'+S.course+'/chg'+(S.chIdx+1)+'\'">下一章 →</button>':'<button class="nb pri" onclick="finishCourse()">🎓 完成全部章节</button>')

    +'</div></main></div></div>';

  window.scrollTo(0,0);

  markRead();

}



/* 标记已读并保存最近位置（登录用户） */

function markRead(){

  var key=S.course+'_'+TRA.courses[S.course].chapters[S.chIdx].no;

  if(isLogin()){

    if(!U.done[key]){U['read_'+key]=1;}

    U.last=U.last||{};U.last[S.course]=S.chIdx;

    saveU(U);

  }

}



function renderQuiz(c,ch){

  if(!ch.questions||!ch.questions.length)return '';

  var html='<div class="qz-hd"><h3>📝 本章练习（'+ch.questions.length+'题）</h3><span id="qzState" style="font-size:12px;color:#9ca3af"></span></div><div id="qzBox">';

  ch.questions.forEach(function(q,qi){

    html+='<div class="qb" data-q="'+qi+'"><div class="qt">'+(qi+1)+'. '+esc(q.q)+'</div><div class="opts">';

    for(var k in q.o)html+='<span class="opt" data-k="'+k+'" onclick="pickOpt(this,\''+k+'\')">'+k+'. '+esc(q.o[k])+'</span>';

    html+='</div><div class="ana"><b>'+(!isLogin()?'🔒 注册后可见解析':'✔ 正确答案：'+q.a+'　')+'</b><span class="anatxt">'+(anaVisible(S.course,ch.no)?esc(q.an)||'':(isLogin()?'<a href="/zhikua/vip-register/?from=tq" style="color:#b45309">升级会员解锁全部解析</a>':'<a href="/zhikua/vip-register/?from=tq" style="color:#b45309">免费注册解锁解析</a>'))+'</span></div></div>';

  });

  html+='</div><div style="margin-top:14px"><button class="nb pri" onclick="submitQuiz()">提交答案</button> <span style="font-size:12px;color:#9ca3af;margin-left:8px">'+(isLogin()?(fullRight()||memLevel()==='lite'?'':'（解析：你当前的会员等级可看前3章）'):'提交后需注册才能查看对错与解析')+'</span></div>';

  return html;

}



window.pickOpt=function(el,k){

  var qb=el.closest('.qb');

  if(!qb||qb.getAttribute('data-locked'))return;

  var q=curQ(qb);

  if(!q)return;

  if(q&&q.t===2){el.classList.toggle('sel')}

  else{qb.querySelectorAll('.opt').forEach(function(o){o.classList.remove('sel')});el.classList.add('sel')}

};

function curQ(qb){

  var c=TRA.courses[S.course];

  return c.chapters[S.chIdx].questions[parseInt(qb.getAttribute('data-q'))];

}

window.submitQuiz=function(){

  var c=TRA.courses[S.course],ch=c.chapters[S.chIdx],key=S.course+'_'+ch.no;

  var box=document.getElementById('qzBox');if(!box)return;

  var rightN=0,total=ch.questions.length,ansRecord=[],wrongQs=[];

  box.querySelectorAll('.qb').forEach(function(qb){

    var qi=parseInt(qb.getAttribute('data-q')),q=ch.questions[qi];

    var sel=[].map.call(qb.querySelectorAll('.opt.sel'),function(o){return o.getAttribute('data-k')}).sort().join('');

    var correct=sel===q.a;

    if(correct)rightN++;

    else wrongQs.push({cn:ch.no,qt:q.q});

    ansRecord.push({no:key+'_'+qi,sel:sel,right:correct});

    qb.setAttribute('data-locked','1');

    qb.querySelectorAll('.opt').forEach(function(o){

      var kk=o.getAttribute('data-k');

      if(q.a.indexOf(kk)>-1)o.classList.add('right');

      else if(o.classList.contains('sel'))o.classList.add('wrong');

    });

    var ana=qb.querySelector('.ana'),txt=qb.querySelector('.anatxt');

    /* 解析权限：游客→锁定框；登录看等级 */

    if(!isLogin()){

      txt.innerHTML='<a href="/zhikua/vip-register/?from=tq" style="color:#b45309;font-weight:700">🔐 免费注册解锁本题解析（30秒完成）</a>';

      ana.style.display='block';return;

    }

    if(anaVisible(S.course,ch.no)){txt.innerHTML=(sel?('你的答案：'+sel+'　'):'未作答　')+'✔ 正确答案：'+q.a+'｜'+esc(q.an||'')}

    else{txt.innerHTML='本章为第'+ch.no+'章，超出当前会员解析范围。<a href="/zhikua/?up=training" style="color:#b45309;font-weight:700">升级专业会员/购买培训专项包</a>　或　<a href="javascript:payNow('+PERCOURSE[S.course]+')" style="color:#b45309;font-weight:700">单课解锁本课程 ¥99/年</a>';}

    ana.style.display='block';

  });

  /* 存档（仅登录） */

  if(isLogin()){

    ansRecord.forEach(function(r){U.ans[r.no]={sel:r.sel,right:r.right}});

    wrongQs.forEach(function(w){var k=key+'_'+w.qt;if(U.err.indexOf(k)<0)U.err.push(k)});

    U.done[key]=true;U.last=U.last||{};U.last[S.course]=Math.min(S.chIdx+1,c.chapters.length-1);

    if(S.chIdx===c.chapters.length-1)U['badge_'+S.course]=Date.now();

    saveU(U);

    document.getElementById('qzState').innerHTML='<b style="color:#059669">成绩：'+rightN+'/'+total+' ✅已存档</b>'+(wrongQs.length?'　错题已进错题本':'');

  }else{

    document.getElementById('qzState').innerHTML='<b style="color:#b45309">'+rightN+'/'+total+' 正确</b>';

  }

};



window.finishCourse=function(){

  var c=TRA.courses[S.course];

  if(isLogin()){U['badge_'+S.course]=Date.now();saveU(U);

    app.innerHTML='<div class="tra-wrap"><div class="lockbox" style="border-color:#10b981;background:#f0fdf6"><div class="lk-ic">🎉</div><h3 style="margin:0 0 10px">恭喜完成《'+c.name+'》全部'+c.chapters.length+'章！</h3><p>结业徽章已收入学习中心。建议继续学习其他岗位课程。</p><a class="lk-btn" style="background:#065f46" href="'+location.pathname+'#/list">返回课程列表</a> <a class="lk-btn" style="background:#0e7490" href="'+location.pathname+'#/center">查看学习中心</a></div></div>';

  }else{

    showRegWall('完成徽章与结业记录需要保存到学习账户','注册后本课程学习记录、成绩与徽章永久保留，换设备也不丢');

  }

};



function showRegWall(title,desc){

  app.innerHTML='<div class="tra-wrap"><div class="lockbox"><div class="lk-ic">🔐</div><h3 style="margin:0 0 10px">'+title+'</h3><p>'+desc+'</p>'

   +'<a class="lk-btn" style="background:#d97706" href="/zhikua/vip-register/?from=trainingwall">免费注册 / 登录</a>'

   +'<a class="lk-btn" style="background:#065f46" href="/zhikua/">查看会员权益</a>'

   +'<p style="margin-top:14px"><a href="'+location.pathname+'#/list" style="color:#64748b;font-size:12.5px">暂不注册，返回浏览 →</a></p></div></div>';

}



/* ═══ 学习中心 ═══ */

function renderCenter(){

  if(!isLogin()){showRegWall('学习中心需要登录','登录后可查看学习进度、错题本与完成徽章——你的私人碳岗位学习档案');return}

  var rows='',errRows='';

  for(var k in TRA.courses){

    var c=TRA.courses[k],dn=c.chapters.filter(function(ch){return U.done[k+'_'+ch.no]}).length,pct=Math.round(dn/c.chapters.length*100);

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  app.innerHTML='<div class="tra-wrap"><h2 style="font-size:20px;font-weight:800;margin:0 0 18px">📊 我的学习中心</h2>'

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    +'<div style="margin-top:18px;background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:18px 22px;font-size:13.5px;color:#374151">🏢 <b>企业培训需求？</b>数晰提供 MRV 碳管理系统落地 + 企业内训打包方案，<a href="/about-us/" style="color:#059669">联系我们获取方案 →</a></div>'

    +'<div style="margin-top:14px"><a href="'+location.pathname+'#/list" style="color:#6b7280;font-size:13px">← 返回课程列表</a></div></div>';

}

window.clearErr=function(){U.err=[];saveU(U);render()};



/* ── 课程大纲弹窗 ── */

window.showOutline=function(slug){

  var c=TRA.courses[slug];if(!c)return;

  var lis=c.chapters.map(function(ch){return '<li>'+esc(ch.title)+'</li>'}).join('');

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  var wrap=document.createElement('div');

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   +'<div style="background:#fff;border-radius:14px;max-width:560px;width:100%;max-height:82vh;overflow-y:auto;padding:26px 28px;box-shadow:0 20px 50px rgba(0,0,0,.25)" onclick="event.stopPropagation()">'

   +'<div style="display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:4px">'

   +'<h3 style="margin:0;font-size:19px;font-weight:800;color:#111">'+c.icon+' '+c.name+' · 课程大纲</h3>'

   +'<span style="cursor:pointer;color:#9ca3af;font-size:22px;line-height:1" onclick="document.getElementById(\'tra-ol-wrap\').remove()">×</span></div>'

   +'<div style="font-size:12.5px;color:#6b7280;margin:6px 0 14px">'+c.chapters.length+'章 · '+c.hours+'学时 · 图文教程 + 章节练习 + 智能解析</div>'

   +'<ol style="margin:0;padding-left:20px;font-size:13.5px;color:#374151;line-height:2">'+lis+'</ol>'

   +'<div style="margin-top:18px;display:flex;gap:10px;flex-wrap:wrap">'

   +'<button class="tc-btn" style="background:#065f46" onclick="var w=document.getElementById(\'tra-ol-wrap\');if(w)w.remove();location.hash=\'#/course/'+slug+'\'">开始学习 →</button>'

   +'<button class="tc-btn tc-buy" onclick="var w=document.getElementById(\'tra-ol-wrap\');if(w)w.remove();traBuy('+PERCOURSE[slug]+')">单课解锁 ¥99/年</button>'

   +'</div></div></div>';

  document.body.appendChild(wrap);

};



/* 启动 */

window.addEventListener('hashchange',route);

/* 学习跟踪初始化 */
lrCheckAdmin();
lrLoadLearners();
if(LR.isAdmin){lrLoadStats();}

/* 等 TRA 数据就绪后再渲染，避免与数据文件加载产生竞态导致 TRA is not defined */

var _traBoot=Date.now();

function _routeWhenReady(){

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}

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})();