.headline {
  background-color: var(--color_white);
  padding: 3rem 0 6rem;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.headline_title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.headline_title_ja {
  font-size: var(--fs-28-36);
  color: var(--color_blue);
}

.headline_title_en {
  font-size: var(--fs-18-20);
  color: var(--color_sky);
}

.faq {
  --faq-toggle-duration: 0.2s;
  padding: 0 0 12rem;
  position: relative;
  background-color: var(--color_blue);
  color: var(--color_white);
}

.faq.section_curving::before {
  background-color: var(--color_blue);
}

.faq_inner {
  width: 100%;
  max-width: calc(1024px + 4rem);
  margin: 0 auto;
  padding: var(--pad-inner-pc);
}

.faq_lead {
  margin: 0 0 2rem;
  font-size: var(--fs-16-18);
  line-height: 1.8;
  text-align: center;
}

.faq_list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.faq_item {
  background-color: var(--color_white);
  border-radius: 12px;
  overflow: hidden;
  interpolate-size: allow-keywords;
}

.faq_item::details-content {
  overflow: clip;
  transition:
    block-size var(--faq-toggle-duration) ease,
    content-visibility var(--faq-toggle-duration) allow-discrete;
}

.faq_item:not([open])::details-content {
  block-size: 0;
}

.faq_item_question {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.75rem 1rem;
  padding: 2rem;
  list-style: none;
  cursor: pointer;
  color: var(--color_sky);
  font-size: var(--fs-16-20);
  font-weight: var(--font_semibold);
}

.faq_item_question::-webkit-details-marker {
  display: none;
}

.faq_item_question::marker {
  content: "";
}

.faq_item_label {
  flex-shrink: 0;
  font-size: var(--fs-20-28);
  font-weight: var(--font_bold);
  line-height: 1;
}

.faq_item_label--q {
  color: var(--color_blue);
}

.faq_item_label--a {
  color: var(--color_red);
}

.faq_item_question_text {
  text-align: left;
}

.faq_item_icon {
  flex-shrink: 0;
  display: block;
  width: 1.25rem;
  height: 1.25rem;
}

.faq_item_icon::before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  background-color: var(--color_sky);
  transition: clip-path var(--faq-toggle-duration) ease;
  clip-path: polygon(38% 0%,
      62% 0%,
      62% 38%,
      100% 38%,
      100% 62%,
      62% 62%,
      62% 100%,
      38% 100%,
      38% 62%,
      0% 62%,
      0% 38%,
      38% 38%);
}

.faq_item[open] .faq_item_icon::before {
  clip-path: polygon(0% 38%, 100% 38%, 100% 62%, 0% 62%);
}

.faq_item_answer {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 0.75rem 1rem;
  padding: 0 2rem 2rem;
  color: #333;
}

.faq_item_answer_text {
  font-size: var(--fs-16-20);
  font-weight: var(--font_medium);
}

@media (max-width: 768px) {
  .faq_inner {
    padding: var(--pad-inner-sp);
  }

  .faq_item_question,
  .faq_item_answer {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .faq_item_answer {
    padding-bottom: 1rem;
  }
}