'+'
':'')+'
';wrap.addEventListener('click',function(ev){if(ev.target===wrap||(ev.target.classList&&ev.target.classList.contains('keep')))wrap.remove();});body.appendChild(wrap);}catch(e){}});}
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if(res.freeze_used_today){showNudgeToast('A streak freeze saved your streak. Keep it rolling today.');}}catch(e){}}
function rsSignal(sig,meta){try{var k='rs-sig:'+sig+':'+location.pathname;if(sessionStorage.getItem(k))return;sessionStorage.setItem(k,'1');var a=localStorage.getItem('rsc-aid');if(!a){a=Math.random().toString(36).slice(2,12);localStorage.setItem('rsc-aid',a);}
var hdrs={'Content-Type':'application/json'};try{var tk=window.RSCExerciseAPI&&window.RSCExerciseAPI.token&&window.RSCExerciseAPI.token();if(tk)hdrs['Authorization']='Bearer '+tk;}catch(e){}
fetch('/api/signal',{method:'POST',keepalive:true,headers:hdrs,body:JSON.stringify({s:sig,p:location.pathname,m:meta||'',a:a})}).catch(function(){});}catch(e){}}
function renderPaywall(){showingPaywall=true;rsSignal('paywall_hit',courseId?courseId+':'+lessonOrder:'');steps.forEach(function(s){s.classList.remove('on');});var pw=stage.querySelector('.lm-paywall');if(!pw){pw=document.createElement('div');pw.className='lm-paywall';pw.innerHTML='Badge earned
'+''+esc(badge.name)+'
'+ (cardUrl?''+
(h?'Share on LinkedIn':'')+
(h?'Share on X':'')+''+'
'+'Continue this course with Pro
'+'The first lessons are free. Unlock the full '+esc(courseTitle)+' course, every interactive lesson, and your certificate with Pro.
'+'See plans →';stage.appendChild(pw);} pw.style.display='';curEl.textContent=Math.min(i+1,total);midEl.textContent='Preview complete';backBtn.disabled=false;contBtn.disabled=true;stage.scrollTop=0;} function renderPassChip(){var tr=app.querySelector('.lm-top-right');if(!tr||tr.querySelector('.lm-pass'))return;if(!passState||!passState.active||access!=='pro')return;var a=document.createElement('a');a.className='lm-pass';a.href='/pricing.html';a.textContent='Pass: '+passState.days_left+' day'+ (passState.days_left===1?'':'s')+' left';var cert=tr.querySelector('.lm-cert');if(cert){tr.insertBefore(a,cert);cert.style.display='none';} else tr.appendChild(a);try{if(typeof gtag==='function')gtag('event','pass_chip_view',{lesson:curSlug,days_left:passState.days_left});}catch(e){}} function updateGatePassCopy(){var g=stage.querySelector('.lm-gate');if(!g||body.classList.contains('pro'))return;var h=g.querySelector('h3');if(h&&h.textContent!=='Your 30-day Data Analyst pass has ended'){h.textContent='Your 30-day Data Analyst pass has ended';} if(!g.querySelector('.lm-gate-pass-note')){var n=document.createElement('p');n.className='lm-gate-pass-note';n.textContent='Everything you finished stays on your profile, and the New to R course stays free.';var pos=g.querySelector('.lm-gate-pos')||h;if(pos&&pos.parentNode)pos.parentNode.insertBefore(n,pos.nextSibling);}} function teardownGate(){var g=stage.querySelector('.lm-gate');if(g)g.style.display='none';stage.classList.remove('lm-gatelock');steps.forEach(function(s){s.classList.remove('lm-teaser','lm-teaser-quiz');});var sg=app.querySelector('.lm-segs');if(sg)sg.classList.remove('lm-gated');var sp=app.querySelector('.lm-stepper');if(sp)sp.classList.remove('lm-gated');} function fillGateFreeLink(){var a=stage.querySelector('[data-gate-free]');if(!a||!railCourse||!railCourse.lessons)return;for(var j=0;j'+''+'
'+'← Back to '+esc(exitLabel())+''+'
';stage.appendChild(g);g.addEventListener('click',function(ev){var t=ev.target.closest&&ev.target.closest('[data-gate-cta],[data-gate-free]');if(!t)return;try{if(typeof gtag==='function')gtag('event','pro_gate_cta',{target:t.hasAttribute('data-gate-cta')?'pricing':'free-lesson',lesson:curSlug});}catch(e){}});try{if(typeof gtag==='function')gtag('event','pro_gate_view',{lesson:curSlug,course:courseId||''});}catch(e){}}else{g.style.display='';}
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function renderSignInWall(){rsSignal('signin_wall_hit',courseId?courseId+':'+lessonOrder:'');steps.forEach(function(s){s.classList.remove('on');});var w=stage.querySelector('.lm-signin');if(!w){var next=encodeURIComponent(location.pathname+location.search);w=document.createElement('div');w.className='lm-signin';w.innerHTML=''+(isProUser?'This lesson is in a different track':(passState&&!passState.active?'Your 30-day Data Analyst pass has ended':'This is a Pro lesson'))+'
'+ (pos?''+pos+'
':'')+ (desc?''+esc(desc)+'
':'')+''+(isProUser?'Upgrade to All-Access →':'Unlock with Pro →')+''+'From $9/month, or $65 for a full year
'+'14-day money-back guarantee · cancel anytime
'+'The first lessons of this course are free →'+'← Back to '+esc(exitLabel())+''+'
Create a free account to keep going
'+'You have started '+esc(courseTitle)+'. It is free to continue: a free account unlocks the rest of this course, saves your progress, and lets you pick up on any device.
'+'Sign in to continue →'+'Free account, no card. Your first two lessons stay open.
'+'← Back to '+esc(exitLabel())+'';stage.appendChild(w);}else{w.style.display='';} segEls.forEach(function(e){e.className='';});curEl.textContent=Math.min(lessonOrder||(i+1),total);midEl.textContent='Free account needed';backBtn.disabled=true;contBtn.disabled=true;stage.scrollTop=0;} function render(){if(accountLocked){renderSignInWall();return;} if(locked&&!gateHold){renderProGate();return;} teardownGate();var sw=stage.querySelector('.lm-signin');if(sw)sw.style.display='none';if(showingPaywall){var p=stage.querySelector('.lm-paywall');if(p)p.style.display='none';showingPaywall=false;} steps.forEach(function(s,k){s.classList.toggle('on',k===i);});segEls.forEach(function(e,k){e.className=k'+up+''+esc(railCourse.title)+''+''+dn+' / '+railCourse.lessons.length+' done
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';});return h;}
function renderTrackLevel(done,pro){var h=''+esc(c.title)+''+cdn+' / '+(c.lessons||[]).length+'
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'+
(ds.courseLesson&&ds.courseTotal?'Lesson '+esc(ds.courseLesson)+' of '+esc(ds.courseTotal)+' complete':'Lesson complete')+' · '+dn+' / '+railCourse.lessons.length+' done
';}
var primary=nextHref?'Next lesson →':'Finish ✓';var card=document.createElement('div');card.className='lm-complete-actions';card.innerHTML=prog+''+primary+''+'← '+esc(exitLabel())+'
';step.appendChild(card);var rv=card.querySelector('.lm-ca-review');if(rv)rv.addEventListener('click',function(){i=0;render();});}
function toggleFs(){try{if(!document.fullscreenElement){if(document.documentElement.requestFullscreen)document.documentElement.requestFullscreen();}
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