html,body{margin:0;padding:0;background:#F5F1EA;}
  *{box-sizing:border-box;}
  a{color:#F26522;} a:hover{color:#ff7d3c;}
  summary::-webkit-details-marker{display:none;}
  summary::marker{content:"";}
  details[open] summary span:last-child{transform:rotate(45deg);}
  summary span:last-child{transition:transform .15s ease;}