.marine-hero {
  background: #0f2d35;
}

.ocean-overlay {
  background:
    linear-gradient(90deg, rgba(7, 31, 39, 0.88), rgba(31, 138, 165, 0.48) 58%, rgba(7, 31, 39, 0.16)),
    radial-gradient(circle at 76% 24%, rgba(116, 185, 111, 0.24), transparent 32%),
    linear-gradient(180deg, rgba(7, 31, 39, 0.22), rgba(7, 31, 39, 0.68));
}

.ocean-categories {
  background:
    linear-gradient(180deg, rgba(232, 245, 248, 0.95), rgba(251, 250, 245, 0.88)),
    var(--color-sky);
}

.marine-tabs {
  justify-content: center;
}

.marine-card-section {
  background: var(--color-paper);
  padding-top: 30px;
}

.marine-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.marine-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}

.marine-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 20px 46px rgba(20, 33, 31, 0.15);
}

.marine-card.is-hidden {
  display: none;
}

.marine-card img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.marine-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 24px;
}

.marine-card-body h3 {
  margin-top: 16px;
}

.marine-card-body p {
  margin-top: 10px;
}

.marine-card-body .text-link {
  margin-top: auto;
  padding-top: 22px;
}

.ocean-facts {
  background:
    linear-gradient(135deg, rgba(20, 33, 31, 0.94), rgba(31, 138, 165, 0.9)),
    #132421;
  color: var(--color-white);
}

.ocean-facts .section-kicker,
.ocean-facts p {
  color: rgba(255, 255, 255, 0.76);
}

.ocean-facts .section-kicker::before {
  background: var(--color-sun);
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.fact-card {
  min-height: 250px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(16px);
}

.fact-card strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 24px;
  color: var(--color-ink);
  background: var(--color-sun);
  border-radius: var(--radius-pill);
}

.fact-card h3 {
  color: var(--color-white);
}

.fact-card p {
  margin-top: 12px;
}

.gallery-preview-section {
  background: var(--color-white);
}

.preview-mosaic {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  grid-auto-rows: 210px;
  gap: 14px;
}

.preview-mosaic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}

.preview-mosaic img:first-child {
  grid-row: span 2;
}

.conservation-section {
  background:
    linear-gradient(180deg, rgba(238, 246, 241, 0.72), rgba(232, 245, 248, 0.78)),
    var(--color-mist);
}

.conservation-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.75fr);
  gap: 36px;
  align-items: center;
  padding: 40px;
  border-radius: var(--radius-card);
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.conservation-panel p {
  margin-top: 18px;
}

.conservation-list {
  display: grid;
  gap: 12px;
}

.conservation-list li {
  position: relative;
  padding: 16px 18px 16px 44px;
  border-radius: var(--radius-card);
  background: var(--color-mist);
  color: var(--color-ink);
  font-weight: 760;
}

.conservation-list li::before {
  content: "✓";
  position: absolute;
  left: 16px;
  color: var(--color-forest);
  font-weight: 950;
}

@media (max-width: 980px) {
  .marine-card-grid,
  .fact-grid,
  .conservation-panel {
    grid-template-columns: 1fr 1fr;
  }

  .conservation-panel {
    align-items: start;
  }
}

@media (max-width: 680px) {
  .marine-card-grid,
  .fact-grid,
  .conservation-panel,
  .preview-mosaic {
    grid-template-columns: 1fr;
  }

  .marine-card img {
    height: 230px;
  }

  .preview-mosaic {
    grid-auto-rows: 190px;
  }

  .preview-mosaic img:first-child {
    grid-row: auto;
  }

  .conservation-panel {
    padding: 24px;
  }
}