.popup-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.popup-overlay.is-hidden {
  display: none;
}
.popup-modal {
  background: #fff;
  border-radius: 8px;
  padding: 24px 40px 24px 24px;
  max-width: 480px;
  width: 100%;
  position: relative;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}
.popup-block {
  margin-top: 1em;
}
.popup-block:first-child {
  margin-top: 0;
}
.popup-quote {
  margin: 0 0 0.25em 0;
  font-size: 16px;
  line-height: 1.5;
}
.popup-source {
  margin: 0;
  font-size: 14px;
  color: #666;
  font-style: italic;
}
.popup-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: none;
  background: #eee;
  border-radius: 50%;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  color: #333;
}
.popup-close:hover {
  background: #ddd;
}