/* ==========================================================================
   FAQ
   ========================================================================== */
.faq {
  padding: 32px 0;
  background-color: var(--color-main);
}

.faq__head {
  text-align: center;
}

.faq__title-en {
  font-family: var(--font-en);
  font-weight: 900;
  font-size: 4rem;
  letter-spacing: 0.04em;
  color: var(--color-blue-text);
  line-height: 1.1;
}

.faq__title-jp {
  margin-top: 8px;
  font-weight: 900;
  font-size: 2rem;
  letter-spacing: 0.04em;
}

.faq__list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.faq__item {
  background-color: var(--color-base);
  border-radius: 6px;
  padding: 16px 14px;
}

.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  text-align: left;
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--color-accent);
}

.faq__question em {
  font-family: var(--font-en);
  font-style: normal;
  margin-right: 4px;
}

.faq__question-text {
  /* FAQ3のみ: 「Q:」と質問本文を別要素にし、本文側をflexで折返しさせることで、
     <br>で2行目になった際に本文の開始位置(「物」の位置)に揃うようにする。
     spanの間隔は既存の.faq__question em { margin-right:4px }をそのまま利用。 */
  display: flex;
  align-items: baseline;
}

.faq__question::after {
  content: "";
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(-45deg);
  transition: transform 0.25s ease;
}

.faq__item.is-open .faq__question::after {
  transform: rotate(45deg);
}

.faq__answer {
  display: grid;
  grid-template-rows: 1fr;
  padding-top: 8px;
  transition: grid-template-rows 0.25s ease, opacity 0.25s ease, padding-top 0.25s ease;
}

.faq__answer p {
  overflow: hidden;
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-weight: 700;
  font-size: 1.4rem;
  line-height: 1.5;
  border-top: 1px solid #d9d9d9;
  padding-top: 8px;
}

.faq__answer p em {
  font-family: var(--font-en);
  font-style: normal;
  flex-shrink: 0;
}

.faq__item:not(.is-open) .faq__answer {
  grid-template-rows: 0fr;
  padding-top: 0;
  opacity: 0;
}

.faq__item:not(.is-open) .faq__answer p {
  padding-top: 0;
  border-top: none;
}

@media (min-width: 768px) {
  .faq {
    padding: 76px 0;
  }

  .faq__title-en {
    font-size: 7.2rem;
  }

  .faq__title-jp {
    margin-top: 16px;
    font-size: 3.2rem;
  }

  .faq__list {
    margin-top: 48px;
    gap: 32px;
  }

  .faq__item {
    padding: 20px 38px;
  }

  .faq__question {
    font-size: 2.4rem;
  }

  .faq__question em {
    letter-spacing: 0.2em;
    margin-right: 8px;
  }

  .faq__question::after {
    width: 14px;
    height: 14px;
    border-width: 3px;
  }

  .faq__answer {
    padding-top: 16px;
  }

  .faq__answer p {
    gap: 8px;
    font-size: 1.6rem;
    padding-top: 16px;
  }

  .faq__answer p em {
    letter-spacing: 0.2em;
  }
}