body {
  background: #f7f8fb;
}

.subpage-header {
  position: relative;
  background-image: url("assets/images/home/header-banner.png");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.subpage-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(8, 20, 35, 0.68);
}

.subpage-header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 28px;
  padding: 26px 0 22px;
}

.subpage-brand {
  text-decoration: none;
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
}

.subpage-brand-title {
  font-family: "Noto Serif SC", "Times New Roman", serif;
  color: #ffffff;
  font-size: clamp(28px, 2.8vw, 38px);
  line-height: 1.2;
  font-weight: 700;
}

.subpage-brand-tag {
  color: rgba(225, 233, 245, 0.9);
  font-size: clamp(14px, 1.3vw, 18px);
}

.subpage-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.subpage-language {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.subpage-language #languageSelect {
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.28);
  color: #ffffff;
  padding: 6px 10px;
  font: inherit;
}

.subpage-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
}

.subpage-nav a {
  text-decoration: none;
  color: rgba(245, 248, 255, 0.95);
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: all 160ms ease;
}

.subpage-nav a:hover,
.subpage-nav a.active {
  border-color: rgba(255, 255, 255, 0.42);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.14);
}

.gallery-main {
  background:
    radial-gradient(circle at 100% 0%, rgba(55, 101, 170, 0.08), transparent 36%),
    radial-gradient(circle at 0% 100%, rgba(74, 133, 112, 0.08), transparent 33%),
    #f9fbfe;
}

.gallery-shell {
  padding: 46px 0 70px;
}

#galleryPageTitle {
  font-size: clamp(30px, 3.8vw, 46px);
  color: #1c2b3a;
}

.gallery-intro {
  margin: 12px 0 0;
  color: #556474;
  font-size: clamp(16px, 1.7vw, 19px);
}

.gallery-content {
  margin-top: 30px;
  display: grid;
  gap: 26px;
}

.gallery-year {
  position: relative;
  padding: 16px 16px 18px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid #dce4ee;
  box-shadow: 0 10px 28px rgba(42, 73, 104, 0.08);
}

.gallery-year::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 16px 0 0 16px;
  background: linear-gradient(180deg, #5a7ea8, #86a9cd);
}

.gallery-year-title {
  margin: 0;
  padding-left: 12px;
  font-size: clamp(30px, 2.8vw, 40px);
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  font-weight: 700;
  color: #24384f;
}

.gallery-events {
  margin-top: 12px;
  display: grid;
  gap: 20px;
}

.gallery-event {
  border-radius: 14px;
  border: 1px solid #d8e2ee;
  background: linear-gradient(180deg, #ffffff, #f8fbff);
  overflow: hidden;
}

.gallery-event-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px 10px;
}

.gallery-event-title {
  margin: 0;
  font-size: clamp(20px, 2.2vw, 26px);
  color: #1f3248;
}

.gallery-event-date {
  color: #617388;
  font-weight: 600;
  font-size: 15px;
}

.gallery-event-description {
  margin: 0;
  padding: 0 16px 10px;
  color: #4d5f72;
}

.gallery-photos {
  padding: 0 16px 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.gallery-photo {
  position: relative;
  border: 0;
  margin: 0;
  padding: 0;
  border-radius: 12px;
  overflow: hidden;
  background: #e9eef4;
  cursor: zoom-in;
  aspect-ratio: 4 / 3;
}

.gallery-photo.is-cover {
  grid-column: span 2;
  grid-row: span 2;
  aspect-ratio: 16 / 10;
}

.gallery-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 220ms ease, filter 220ms ease;
}

.gallery-photo:hover img {
  transform: scale(1.03);
  filter: saturate(1.08);
}

.gallery-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(10, 22, 39, 0.2));
  opacity: 0;
  transition: opacity 180ms ease;
}

.gallery-photo:hover::after {
  opacity: 1;
}

.gallery-empty {
  color: #6a7684;
  font-size: 17px;
}

.gallery-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
}

.gallery-lightbox[hidden] {
  display: none;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(2px);
}

.lightbox-dialog {
  position: relative;
  z-index: 1;
  width: min(1100px, 92vw);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
}

.lightbox-figure {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  background: #0f1f31;
}

#lightboxImage {
  display: block;
  max-width: 100%;
  max-height: 78vh;
  margin: 0 auto;
}

.lightbox-caption {
  margin: 0;
  padding: 10px 12px;
  color: #e9eef8;
  font-size: 15px;
  text-align: center;
  background: rgba(0, 0, 0, 0.25);
}

.lightbox-close,
.lightbox-nav {
  border: 1px solid rgba(255, 255, 255, 0.42);
  color: #ffffff;
  background: rgba(0, 0, 0, 0.28);
  width: 42px;
  height: 42px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 28px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 160ms ease, background 160ms ease;
}

.lightbox-close:hover,
.lightbox-nav:hover {
  transform: translateY(-1px);
  background: rgba(0, 0, 0, 0.5);
}

.lightbox-close {
  position: absolute;
  top: -52px;
  right: 0;
  font-size: 26px;
}

@media (max-width: 900px) {
  .subpage-header-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }

  .subpage-right {
    align-items: flex-start;
  }

  .subpage-nav {
    justify-content: flex-start;
  }

  .gallery-photos {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gallery-photo.is-cover {
    grid-column: span 2;
  }
}

@media (max-width: 760px) {
  .gallery-shell {
    padding: 34px 0 50px;
  }

  .gallery-year {
    padding: 12px 12px 14px;
  }

  .gallery-event-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .gallery-photos {
    padding: 0 10px 10px;
    grid-template-columns: 1fr;
  }

  .gallery-photo,
  .gallery-photo.is-cover {
    grid-column: auto;
    grid-row: auto;
    aspect-ratio: 16 / 10;
  }

  .lightbox-dialog {
    width: min(96vw, 640px);
    grid-template-columns: 1fr;
  }

  .lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
  }

  .lightbox-prev {
    left: 8px;
  }

  .lightbox-next {
    right: 8px;
  }

  .lightbox-close {
    top: -46px;
    right: 8px;
  }
}