'+
''+
'';
}
function render(videos){
var list=document.getElementById('tb-vl-list');
if(!list)return;
list.innerHTML=videos.map(cardHTML).join('');
}
function fetchVideos(){
try{
var cached=sessionStorage.getItem(CACHE_KEY);
if(cached){var obj=JSON.parse(cached);if(Date.now()-obj.ts
