.overlay {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0,0,0,.85);
    z-index: 10000000;
}
.popup {
    position: relative;
    display: inline-block;
    width: auto;
    min-width: 50%;
    left: 50%;
    top: 50%;
    background: white;
    padding: 20px;
    transform: translate(-50%,-50%);
    font-size: 1.2rem;
}
.popup-action {
    display: flex;
    justify-content: end;
    margin-top: 15px;
}
.popup-title {
  font-size: 1.75rem;
}
.popup-action button {
    cursor: pointer;
    padding: 0.375rem 0.75rem;
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
    user-select: none;
    border: 1px solid transparent;
    line-height: 1.2rem;
    border-radius: 0.25rem;
    font-size: 1.25rem;
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
.popup details summary {
  font-weight: bold;
}
.popup section.faq {
  max-height: 80vh;
  overflow-y: auto; 
  min-width: 800px;
  margin: 2rem auto;
}
.popup section.faq details {
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 8px;
  padding: 1rem; margin-bottom: 1rem;
}