:root {
  --colour-hairline-faint: rgba(0, 0, 0, 0.07);
  --colour-expand: rgba(0, 0, 0, 0.03);
}

.help-center {
  padding: 10px 0;
  background: var(--colour-locale-frame);
}

.help-center__opening {
  padding-top: 10px;
}

.help-center__opening p,
.help-center__response p {
  margin: 0 0 1.3em;
}

.help-center__element {
  border-top: 1px solid var(--colour-hairline-faint);
}

.help-center__inquiry {
  position: relative;
  display: block;
  padding: 0.6em 2.3em;
  color: var(--colour-content);
  font-size: 1.1em;
  line-height: 1.6;
  list-style: none;
  cursor: pointer;
  transition: background-color 0.3s;
}

.help-center__inquiry::-webkit-details-marker {
  display: none;
}

.help-center__inquiry::marker {
  content: "";
}

.help-center__inquiry:hover {
  color: var(--colour-hyperlink-mouseover);
}

.help-center__inquiry:focus-visible {
  outline: 2px solid var(--colour-ring);
  outline-offset: -2px;
}

.help-center__symbol {
  position: absolute;
  top: 1.2em;
  inset-inline-start: 11px;
  width: 18px;
  height: 10px;
  opacity: 0.6;
  transition: transform 0.2s;
}

.help-center__element[open] {
  border-top-color: var(--colour-prominent);
}

.help-center__element[open] > .help-center__inquiry {
  background: var(--colour-expand);
  color: var(--colour-prominent);
  font-weight: 700;
}

.help-center__element[open] .help-center__symbol {
  opacity: 1;
  transform: rotate(180deg);
}

.help-center__response {
  padding: 1em 2.3em;
}

.help-center__response p:last-child {
  margin-bottom: 0;
}

.help-center__response em[lang] {
  font-style: inherit;
}

@media (min-width: 550px) {
  .help-center__opening,
  .help-center__response {
    text-align: justify;
  }
}