const sleep = ms => new Promise(r => setTimeout(r, ms));
let leg=null;
for (const el of document.querySelectorAll('legend'))
  if ((el.textContent||'').trim()==='忽略网络' && el.offsetParent!==null) leg=el;
if(!leg) return {err:'no legend'};
const fs = leg.parentElement;
const dump=[];
const walk=(el,d)=>{ if(d>12) return;
  const own=Array.from(el.childNodes).filter(n=>n.nodeType===3).map(n=>n.textContent.trim()).join('|');
  const cls=(typeof el.className==='string'?el.className:'');
  dump.push({d,tag:el.tagName,cls:cls.slice(0,60),txt:own.slice(0,30),ttl:(el.getAttribute&&el.getAttribute('title'))||''});
  for(const c of el.children) walk(c,d+1); };
walk(fs,0);
return {html: fs.outerHTML.slice(0,2500), n:dump.length};