/* ============================================================
   #fp-faq default — よくあるご質問アコーディオン
   <details>/<summary> ベース。+ アイコンが回転して × に
   ============================================================ */

#fp-faq {
  background: #fff;
  padding: 56px 0;
}
@media (max-width: 768px) {
  #fp-faq { padding: 48px 0; }
}

#fp-faq .fp-faq__head {
  margin: 0 0 28px;
}
#fp-faq .fp-faq__title {
  font-size: 24px;
  color: var(--fp-text);
  margin: 0;
  letter-spacing: 0.02em;
}
@media (max-width: 480px) {
  #fp-faq .fp-faq__title { font-size: 21px; }
}

/* === リスト === */
#fp-faq .fp-faq__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--fp-brand-line);
}
#fp-faq .fp-faq__item {
  border-bottom: 1px solid var(--fp-brand-line);
}

/* details/summary 標準装飾を除去 */
#fp-faq .fp-faq__details {
  background: transparent;
}
#fp-faq .fp-faq__summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 18px 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fp-text);
  line-height: 1.65;
  user-select: none;
  outline: none;
}
#fp-faq .fp-faq__summary::-webkit-details-marker { display: none; }
#fp-faq .fp-faq__summary::marker { content: ''; }
#fp-faq .fp-faq__summary:hover { background: var(--fp-bg-soft); }

#fp-faq .fp-faq__q-mark {
  font-family: 'Noto Serif JP', serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--fp-brand);
  flex-shrink: 0;
  margin-left: 4px;
}
#fp-faq .fp-faq__q-text {
  text-align: left;
}

/* === 開閉アイコン (+ → ×) === */
#fp-faq .fp-faq__icon {
  position: relative;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  margin-right: 4px;
}
#fp-faq .fp-faq__icon span {
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--fp-brand);
  border-radius: 1px;
  transition: transform 0.3s ease;
}
#fp-faq .fp-faq__icon span:first-child {
  width: 14px;
  height: 2px;
  margin-top: -1px;
  margin-left: -7px;
}
#fp-faq .fp-faq__icon span:last-child {
  width: 2px;
  height: 14px;
  margin-top: -7px;
  margin-left: -1px;
}
#fp-faq .fp-faq__details[open] .fp-faq__icon span:last-child {
  transform: rotate(90deg);
}

/* === 回答 === */
#fp-faq .fp-faq__answer {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  padding: 4px 4px 20px 4px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--fp-text-muted);
  animation: fp-faq-slide 0.25s ease;
}
#fp-faq .fp-faq__answer p { margin: 0; }
@keyframes fp-faq-slide {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
#fp-faq .fp-faq__a-mark {
  font-family: 'Noto Serif JP', serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--fp-text-muted);
  margin-left: 4px;
  align-self: start;
  line-height: 1.5;
}

/* === PC === */
@media (min-width: 1024px) {
  #fp-faq { padding: 80px 0; }
  #fp-faq .fp-faq__head { margin-bottom: 36px; }
  #fp-faq .fp-faq__title { font-size: 28px; }
  #fp-faq .fp-faq__summary { padding: 20px 4px; font-size: 14.5px; }
  #fp-faq .fp-faq__answer { font-size: 13.5px; padding-bottom: 22px; }
}