.faq-item {
  border-bottom: 1px solid #d1d5db;
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0;
  cursor: pointer;
  font-size: 1.5rem;
  font-weight: 600;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 2rem; line-height: 1; }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { padding: 0 0 1.5rem; }
.copy-notice {
  position: fixed;
  z-index: 100;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  padding: .75rem 1rem;
  color: white;
  background: black;
  border-radius: .5rem;
  visibility: hidden;
}
.copy-notice.is-visible { visibility: visible; }