.case-single {
  max-width: 1120px;
  margin: 0 auto;
  padding: 100px 24px 80px;
  font-family: var(--font-ja);
}

.case-single__header {
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(184, 157, 106, 0.18);
  text-align: center;
}

.case-single__header h1 {
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
  color: var(--text-main);
  font-size: clamp(2.6rem, 2.2rem + 1vw, 3.6rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.45;
}

.case-single__header h1::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  width: 48px;
  height: 2px;
  margin: 0 auto;
  border-radius: 1px;
  background: var(--gold-gradient);
  content: '';
}

.case-single .case-list {
  display: grid;
  gap: 24px;
}

.case-single .case-card {
  display: grid;
  grid-template-columns: minmax(0, 45%) minmax(0, 1fr);
  gap: 24px 32px;
  align-items: start;
  padding: 28px;
  border: 1px solid rgba(184, 157, 106, 0.12);
  border-radius: 20px;
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
}

.case-single .case-card__images {
  grid-column: 1;
  grid-row: 1 / span 2;
  margin: 0;
}

.case-single .case-card__images figure {
  overflow: hidden;
  margin: 0;
  border-radius: 16px;
  aspect-ratio: 4 / 5;
}

.case-single .case-card__images a {
  display: block;
  height: 100%;
  cursor: zoom-in;
}

.case-single .case-card__images img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.2s ease;
}

.case-single .case-card__images a:hover img {
  opacity: 0.85;
}

.case-single .image_expansion__hint {
  display: none;
}

.case-single .case-card__meta {
  display: grid;
  grid-column: 2;
  gap: 12px;
}

.case-single .case-card__meta > div {
  display: grid;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
}

.case-single .case-card__meta dt {
  color: var(--primary-dark);
  font-weight: 600;
}

.case-single .case-card__meta dd {
  color: var(--text-sub);
  overflow-wrap: anywhere;
}

.case-single .annotation {
  grid-column: 2;
  margin: 0;
  color: var(--text-light);
  font-size: 1.2rem;
  line-height: 1.8;
}

.case-single .case-card:not(:has(.case-card__images)) {
  grid-template-columns: minmax(0, 1fr);
}

.case-single .case-card:not(:has(.case-card__images)) .case-card__meta,
.case-single .case-card:not(:has(.case-card__images)) .annotation {
  grid-column: 1;
}

.case-single__navigation {
  margin-top: 48px;
  text-align: center;
}

.case-single__navigation a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 220px;
  padding: 14px 32px;
  border: 1px solid var(--primary);
  border-radius: 999px;
  background: var(--bg-card);
  color: var(--primary-dark);
  font-size: 1.4rem;
  letter-spacing: 0.04em;
  transition: color var(--transition), background var(--transition), box-shadow var(--transition);
}

.case-single__navigation a:hover {
  background: var(--gold-gradient);
  color: #fff;
  box-shadow: var(--shadow-soft);
}


.case-card__doctor-link {
  color: inherit;
  text-underline-offset: 3px;
  transition: opacity 0.2s ease;
}

.case-card__doctor-link:hover {
  opacity: 0.65;
}

.case-card__doctor-link:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

/* ========================================
   担当医・関連施術
======================================== */

/* 担当医：PC・SP共通で縦2段 */
.case-card__meta > .case-card__doctor-row {
  grid-template-columns: 1fr;
  gap: 10px;
}

/* 関連施術 */
.case-card__related {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.case-card__related h3 {
  margin-bottom: 12px;
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--primary-dark);
}

.case-card__related-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* 担当医・関連施術 共通リンク */
.case-card__nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 12px 16px;
  color: var(--text-sub);
  background: rgba(184, 157, 106, 0.07);
  border: 1px solid rgba(184, 157, 106, 0.25);
  border-radius: 12px;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease,box-shadow 0.2s ease;
}

.case-card__nav-link:hover {
  background: var(--gold-gradient);
  color: #fff;
  box-shadow: var(--shadow-soft);
}

.case-card__nav-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

/* リンク右側のラベル */
.case-card__nav-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--primary-dark);
}

.case-card__nav-link:hover .case-card__nav-label {
  color: #fff;
}

@media (max-width: 480px) {
  .case-card__nav-link {
    padding: 12px;
    gap: 8px;
  }

  .case-card__nav-label {
    font-size: 1.1rem;
  }
}

@media (max-width: 768px) {
  .case-single {
    padding: 100px 16px 64px;
  }

  .case-single__header {
    margin-bottom: 28px;
  }

  .case-single .case-card {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    padding: 20px;
  }

  .case-single .case-card__images,
  .case-single .case-card__meta,
  .case-single .annotation {
    grid-column: 1;
    grid-row: auto;
  }

  .case-single .case-card__images figure {
    max-width: 480px;
    margin: 0 auto;
  }

  .case-single .image_expansion__hint {
    display: block;
    width: fit-content;
    margin: 0 auto 8px;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(58, 50, 38, 0.82);
    color: #fff;
    font-size: 1.2rem;
    line-height: 1.4;
    white-space: nowrap;
  }

  .case-single .case-card__meta > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .case-single__navigation {
    margin-top: 36px;
  }
}