.topic-hero {
  position: relative;
  padding: 48px 0 40px;
  overflow: hidden;
  background: var(--surface);
  margin-bottom: 32px;
  border-radius: 0 0 40px 40px;
}

.topic-hero .page-wrap {
  position: relative;
  z-index: 1;
}

.topic-hero::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 300px;
  right: -80px;
  top: -60px;
  background: radial-gradient(circle, rgba(163, 230, 53, 0.2), transparent 70%);
  border-radius: 55% 45% 60% 40% / 50% 55% 45% 50%;
  pointer-events: none;
}

.topic-kicker {
  color: var(--secondary);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.topic-lead {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 640px;
}

.topic-layout-sidebar {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 36px;
  align-items: start;
}

.topic-rail {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 20px;
  position: sticky;
  top: 100px;
  overflow: hidden;
}

.topic-rail h3 {
  font-size: 0.95rem;
  margin-bottom: 12px;
  color: var(--primary);
}

.topic-rail ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.topic-rail li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
}

.topic-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin: 28px 0;
  align-items: center;
}

.topic-stat-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 32px 0;
}

.topic-stat {
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: 18px;
  padding: 20px 16px;
  text-align: center;
}

.topic-stat strong {
  display: block;
  font-size: 1.4rem;
  color: var(--secondary);
  margin-bottom: 6px;
}

.topic-stat span {
  font-size: 0.85rem;
  color: var(--muted);
}

.topic-pull {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  font-weight: 700;
  color: var(--text);
  padding: 24px 28px;
  margin: 28px 0;
  background: linear-gradient(120deg, rgba(163, 230, 53, 0.1), rgba(56, 189, 248, 0.08));
  border-radius: 20px;
  border: 1px solid var(--border);
}

.topic-mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0;
}

.topic-mosaic-item {
  min-height: 160px;
  border-radius: 24px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
  max-width: 100%;
}

.topic-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  font-size: 0.92rem;
}

.topic-table th,
.topic-table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  color: var(--muted);
}

.topic-table th {
  background: rgba(163, 230, 53, 0.1);
  color: var(--text);
}

.topic-callout {
  background: rgba(244, 63, 94, 0.1);
  border: 1px solid rgba(244, 63, 94, 0.28);
  border-radius: 16px;
  padding: 16px 18px;
  margin: 20px 0;
  color: var(--text);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .topic-layout-sidebar,
  .topic-split,
  .topic-stat-band,
  .topic-mosaic {
    grid-template-columns: 1fr;
  }

  .topic-rail {
    position: static;
  }

  .topic-mosaic-item {
    max-width: 100%;
    min-height: 140px;
  }

  .topic-hero::before {
    right: -120px;
    width: 220px;
    height: 200px;
  }
}

@media (max-width: 375px) {
  .topic-mosaic-item,
  .topic-rail,
  .topic-split,
  .topic-hero {
    max-width: 100%;
    overflow: hidden;
  }
}