/* SEOアコーディオンセクション */
.seo-content-section {
  max-width: 900px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}

.seo-content-section details {
  border-top: 1px solid #ccc;
}

.seo-content-section details:last-child {
  border-bottom: 1px solid #ccc;
}

.seo-content-section details > summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.4rem 0.25rem;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 600;
  color: #222;
  letter-spacing: 0.01em;
}

.seo-content-section details > summary::-webkit-details-marker {
  display: none;
}

.seo-content-section details > summary::after {
  content: '';
  display: inline-block;
  width: 20px;
  height: 20px;
  min-width: 20px;
  background-color: #aaa;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 5v14M5 12h14' stroke='white' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 5v14M5 12h14' stroke='white' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E");
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  float: none;
}

.seo-content-section details[open] > summary::after {
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12h14' stroke='white' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12h14' stroke='white' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E");
}

.seo-content-section .accordion-body {
  padding: 0 0.25rem 1.75rem;
  color: #444;
  line-height: 1.9;
  font-size: 0.95rem;
}

.seo-content-section .accordion-body ol {
  padding-left: 1.25rem;
  margin: 0.75rem 0;
}

.seo-content-section .accordion-body ol li {
  margin-bottom: 0.4rem;
}

.seo-content-section .accordion-body dl {
  margin: 0.5rem 0;
}

.seo-content-section .accordion-body dl dt {
  font-weight: 600;
  color: #222;
  margin-top: 1rem;
}

.seo-content-section .accordion-body dl dd {
  margin-left: 0;
  color: #555;
  margin-top: 0.2rem;
}

/* FAQ内のネストされたdetails */
.seo-content-section .accordion-body details {
  border-top: 1px solid #eee;
  border-bottom: none;
}

.seo-content-section .accordion-body details:last-child {
  border-bottom: 1px solid #eee;
}

.seo-content-section .accordion-body details summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 0.25rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: #333;
  cursor: pointer;
  list-style: none;
}

.seo-content-section .accordion-body details summary::-webkit-details-marker {
  display: none;
}

.seo-content-section .accordion-body details summary::after {
  content: '+';
  font-size: 1.3rem;
  color: #aaa;
  font-weight: 300;
  min-width: 20px;
  text-align: center;
}

.seo-content-section .accordion-body details[open] summary::after {
  content: '−';
}

.seo-content-section .accordion-body details p {
  padding: 0 0.25rem 0.9rem;
  margin: 0;
  color: #555;
  font-size: 0.93rem;
  line-height: 1.8;
}