/* ===== Related content sections ===== */
.related-content { padding: clamp(2rem, 4vw, 3.5rem) 0; }
.related-content h2 { font-size: clamp(1.4rem, 2vw, 1.8rem); margin-bottom: 1.5rem; }

.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.related-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid rgba(19,36,32,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.related-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 44px -24px rgba(19,36,32,0.3);
}

.related-card-img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  background: var(--lightest-green);
}
.related-card--video .related-card-img {
  aspect-ratio: 9/16;
}

.related-card h3 {
  font-size: 0.92rem;
  line-height: 1.3;
  padding: 0.9rem 1rem 0.5rem;
  letter-spacing: -0.01em;
}

.related-card-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--brand);
  padding: 0 1rem 1rem;
}

/* ===== Topic tags ===== */
.topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}
.topic-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--brand);
  border: 1px solid rgba(9,65,57,0.25);
  border-radius: 999px;
  padding: 4px 12px;
  transition: background 0.15s ease, color 0.15s ease;
}
.topic-tag:hover {
  background: var(--brand);
  color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 1080px) {
  .related-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 860px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .related-grid { grid-template-columns: 1fr; }
  .related-card--video .related-card-img { aspect-ratio: 4/5; }
}