*{box-sizing:border-box}
body{
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:#fff;
  color:#444;
  margin:0;
}
.page{
  max-width:820px;
  margin:24px auto 40px;
  padding:0 16px;
}
h1{
  font-size:48px;
  margin:0 0 4px;
  color:#555;
}
hr{border:0;border-top:2px solid #ddd;margin:4px 0 8px}
.subtitle{font-size:22px;color:#666;margin:0 0 28px}

.prompt{
  font-size:22px;
  color:#666;
  margin:28px 0 22px;
  white-space:pre-line;
  min-height: 132px;
}
.doors{
  margin:24px 0 12px;
  display:flex;
  gap:36px;
  justify-content:center;
  align-items:flex-start;
  min-height:280px;
}
.door{
  border:1px solid #000000;
  border-radius:6px;
  background:#fff;
  padding:6px;
  cursor:pointer;
}
.door img{
  
  display:block;
  object-fit:cover;
}
.door.removed{ background:#fff; }
.door.removed img{ visibility:hidden; }
.footer{
  color:#777;
  font-size:18px;
  margin-top:12px;
}