#guide-popup {
  display: none;
  position: fixed;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 600px;
  padding: 20px;
  background: #fff;
  border: 1px solid #ccc;
  z-index: 9999;
  box-shadow: 0 0 15px rgba(0,0,0,0.3);
  overflow: auto;
  max-height: 80vh;
}

#open-guide-popup {
  display: inline-block;
  margin: 10px 0;
  color: black;
  text-decoration: underline;
}

#close-guide-popup {
  float: right;
  color: black;
  font-weight: bold;
}