/* ── Research landing page ── */

.research-section {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}

.research-section:last-child {
  border-bottom: none;
  padding-bottom: 3rem;
}

/* ── Area blocks — clickable rows ── */
.area-block {
  display: grid;
  grid-template-columns: 300px 1fr;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  margin-bottom: 0;
}

.area-block:hover {
  border-color: var(--blue-mid);
  box-shadow: 0 2px 12px rgba(24, 95, 165, 0.07);
}

.area-block-featured {
  min-height: 260px;
}

/* Image panel */
.area-block-img {
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--border);
}

.area-block-img-blue { background: var(--blue-light); }
.area-block-img-cool { background: #f0f4f8; }
.area-block-img-warm { background: #f5f3f0; }

.area-block-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Text panel */
.area-block-text {
  padding: 1.75rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.75rem;
}

.area-block-header {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.area-block-header h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--gray-900);
}

.area-block-text p {
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.75;
}

.subtopics {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.subtopic {
  font-size: 0.75rem;
  padding: 3px 10px;
  border: 1px solid var(--border-mid);
  border-radius: 20px;
  color: var(--gray-600);
  background: var(--gray-50);
}

.area-block-cta {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--blue);
  margin-top: 0.25rem;
}

/* ── Past areas stack ── */
.area-past-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.area-block-past {
  grid-template-columns: 220px 1fr;
  min-height: 200px;
}

/* ── Responsive ── */
@media (max-width: 700px) {
  .area-block,
  .area-block-past {
    grid-template-columns: 1fr;
  }

  .area-block-img {
    height: 160px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .area-block-text {
    padding: 1.25rem;
  }

  .area-block-header h2 {
    font-size: 1.1rem;
  }
}