.faq-item {
  background-color: #fff;
  border-radius: 1em;
  padding: 1em;
  margin-bottom: 2em;
  box-shadow: calc(1 / 18 * 1em) calc(1 / 18 * 1em) calc(5 / 18 * 1em) rgba(0,0,0,0.3);
}

.faq-item * {
  margin: 0;
}

.faq-question {
  position: relative;
  cursor: pointer;
  padding-right: 40px; /* ＋ボタン分の余白 */
  user-select: none;
}

.faq-toggle {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2em;
  font-weight: bold;
  transition: transform 0.3s ease;
  display: inline-block;
}

.faq-question.is-open .faq-toggle {
  transform: translateY(-50%) rotate(45deg); /* ＋が×のような見た目に */
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, opacity 0.3s ease;
  opacity: 0;
  padding-top: 1em;
}

.faq-answer p {
  padding: 10px 0;
  margin: 0;
}

.faq-answer.is-open {
  opacity: 1;
}