.gallery-detail {
  background: #029b79;
  padding-block: clamp(40px, 5.21vw, 100px);
}
.gallery-detail__inner {
  max-width: 1281px;
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 40px);
}
.gallery-detail__breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(6px, 0.6vw, 12px);
  margin-bottom: clamp(30px, 5.2vw, 100px);
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  font-size: clamp(1rem, 1.04vw, 1.25rem);
  letter-spacing: 0.128em;
  line-height: 2;
  color: #ffffff;
}
.gallery-detail__breadcrumb a {
  color: #ffffff;
  text-decoration: none;
}
@media (hover: hover) {
  .gallery-detail__breadcrumb a:hover {
    text-decoration: underline;
  }
}
.gallery-detail__breadcrumb .is-current {
  opacity: 0.85;
}
.gallery-detail__head {
  position: relative;
  background: #ffffff;
  border: 4px solid #ffffff;
  padding: clamp(14px, 1.04vw, 20px) clamp(8px, 0.573vw, 11px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(2px, 0.26vw, 5px);
  text-align: center;
  margin-bottom: clamp(20px, 1.56vw, 30px);
}
.gallery-detail__date {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  font-size: clamp(1rem, 1.04vw, 1.25rem);
  color: #029b79;
  letter-spacing: 0.128em;
  line-height: 1.5;
}
.gallery-detail__title {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  font-size: clamp(1.125rem, 1.25vw, 1.5rem);
  color: #029b79;
  letter-spacing: 0.128em;
  line-height: 1.5;
}
.gallery-detail__badge {
  position: absolute;
  top: clamp(8px, 0.8vw, 16px);
  right: clamp(8px, 0.8vw, 16px);
  background: var(--badge-color, #029b79);
  color: #ffffff;
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  font-size: clamp(1rem, 1.04vw, 1.25rem);
  letter-spacing: 0.128em;
  padding: clamp(4px, 0.52vw, 10px) clamp(10px, 1.04vw, 20px);
  white-space: nowrap;
  line-height: 1.5;
}
.gallery-detail__body {
  margin-bottom: clamp(50px, 5.2vw, 100px);
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  font-size: clamp(1rem, 1.04vw, 1.25rem);
  line-height: 2;
  color: #ffffff;
}
.gallery-detail__body > * + * {
  margin-top: 1.5em;
}
.gallery-detail__body a {
  color: #ffffff;
  text-decoration: underline;
}
.gallery-detail__body img {
  max-width: 100%;
  height: auto;
}
.gallery-detail__thumb {
  margin-bottom: clamp(24px, 3vw, 60px);
  aspect-ratio: 1281/600;
  overflow: hidden;
  background: #d3d3d3;
}
.gallery-detail__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.gallery-detail__pdf {
  display: inline-flex;
  align-items: center;
  gap: clamp(6px, 0.52vw, 10px);
  margin: 0 auto clamp(30px, 2vw, 40px);
  font-family: "Jost", sans-serif;
  font-weight: 700;
  font-size: clamp(1.125rem, 1.25vw, 1.5rem);
  letter-spacing: 0.128em;
  color: #ffffff;
  text-decoration: none;
  transition: opacity 0.3s ease;
}
@media (hover: hover) {
  .gallery-detail__pdf:hover {
    opacity: 0.7;
  }
}
.gallery-detail__pdf svg {
  width: clamp(32px, 2.34vw, 45px);
  height: auto;
  flex-shrink: 0;
  fill: none;
  stroke: #ffffff;
}
.gallery-detail__photos {
  margin-bottom: clamp(50px, 5.2vw, 100px);
}
.gallery-detail__photos-title {
  margin-bottom: clamp(16px, 1.56vw, 30px);
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  font-size: clamp(1.25rem, 1.5625vw, 1.875rem);
  letter-spacing: 0.128em;
  line-height: 1.5;
  color: #ffffff;
}
.gallery-detail__photos-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: clamp(12px, 1.93vw, 37px);
  row-gap: clamp(16px, 2.08vw, 40px);
  list-style: none;
}
@media screen and (max-width: 1024px) {
  .gallery-detail__photos-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media screen and (max-width: 768px) {
  .gallery-detail__photos-grid {
    grid-template-columns: repeat(3, 1fr);
    column-gap: 10px;
    row-gap: 10px;
  }
}
.gallery-detail__photo-btn {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 1/1;
  overflow: hidden;
  background: #d9d9d9;
  border: 0;
  padding: 0;
  cursor: pointer;
}
.gallery-detail__photo-btn img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
@media (hover: hover) {
  .gallery-detail__photo-btn:hover img {
    transform: scale(1.06);
  }
}
.gallery-detail__nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 1.3vw, 25px);
}
.gallery-detail__nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: clamp(6px, 0.52vw, 10px);
  min-height: clamp(44px, 2.86vw, 55px);
  padding: clamp(8px, 0.52vw, 10px) clamp(14px, 1.04vw, 20px);
  border: 1px solid #ffffff;
  font-family: "Jost", sans-serif;
  font-weight: 700;
  font-size: clamp(1rem, 1.25vw, 1.5rem);
  letter-spacing: 0.128em;
  color: #ffffff;
  text-decoration: none;
  transition: background 0.3s ease, color 0.3s ease;
}
@media (hover: hover) {
  .gallery-detail__nav-btn:hover {
    background: #ffffff;
    color: #029b79;
  }
  .gallery-detail__nav-btn:hover .gallery-detail__nav-arrow {
    border-color: #029b79;
  }
}
.gallery-detail__nav-arrow {
  display: inline-block;
  width: 0.5em;
  height: 0.5em;
  border-top: 2px solid #ffffff;
  border-right: 2px solid #ffffff;
  transition: border-color 0.3s ease;
}
.gallery-detail__nav-btn--prev .gallery-detail__nav-arrow {
  transform: rotate(-135deg);
}
.gallery-detail__nav-btn--next .gallery-detail__nav-arrow {
  transform: rotate(45deg);
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(50px, 8vw, 100px) clamp(50px, 10vw, 120px);
  background: rgba(0, 0, 0, 0.85);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}
.lightbox__figure {
  margin: 0;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox__img {
  max-width: 100%;
  max-height: 85svh;
  object-fit: contain;
  display: block;
}
.lightbox__close {
  position: absolute;
  top: clamp(16px, 2.5vw, 40px);
  right: clamp(16px, 2.5vw, 40px);
  width: clamp(36px, 3vw, 50px);
  height: clamp(36px, 3vw, 50px);
  border: 0;
  background: transparent;
  cursor: pointer;
}
.lightbox__close::before, .lightbox__close::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 2px;
  background: #ffffff;
  transition: background 0.3s ease;
}
.lightbox__close::before {
  transform: translate(-50%, -50%) rotate(45deg);
}
.lightbox__close::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}
@media (hover: hover) {
  .lightbox__close:hover::before, .lightbox__close:hover::after {
    background: #029b79;
  }
}
.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: clamp(36px, 3vw, 50px);
  height: clamp(36px, 3vw, 50px);
  border: 0;
  background: transparent;
  cursor: pointer;
}
.lightbox__nav::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: clamp(14px, 1.2vw, 20px);
  height: clamp(14px, 1.2vw, 20px);
  border-top: 3px solid #ffffff;
  border-right: 3px solid #ffffff;
  transition: border-color 0.3s ease;
}
@media (hover: hover) {
  .lightbox__nav:hover::before {
    border-color: #029b79;
  }
}
.lightbox__nav--prev {
  left: clamp(8px, 2vw, 32px);
}
.lightbox__nav--prev::before {
  transform: translate(-30%, -50%) rotate(-135deg);
}
.lightbox__nav--next {
  right: clamp(8px, 2vw, 32px);
}
.lightbox__nav--next::before {
  transform: translate(-70%, -50%) rotate(45deg);
}