.topic-hero {
  padding: 48px 24px 32px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 250, 252, 0.6));
  border-bottom: 1px solid var(--border);
}

.topic-hero-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.topic-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 12px;
  border-bottom: 4px solid #000;
  padding-bottom: 12px;
  display: inline-block;
}

.topic-hero .lede {
  color: var(--muted);
  max-width: 640px;
  font-size: 1.05rem;
}

.topic-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px 64px;
}

.topic-split {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 28px;
  align-items: start;
}

.topic-prose h2 {
  font-size: 1.35rem;
  margin: 28px 0 12px;
}

.topic-prose h3 {
  font-size: 1.1rem;
  margin: 20px 0 8px;
}

.topic-prose p {
  margin-bottom: 14px;
}

.topic-prose ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.topic-prose li {
  margin-bottom: 6px;
}

.topic-rail {
  position: sticky;
  top: 24px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 16px;
  opacity: 0.88;
}

.topic-rail h3 {
  font-size: 0.95rem;
  margin-bottom: 10px;
}

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

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

.image-rail {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.image-rail .decor-wrap {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  opacity: 0.9;
}

.stat-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 28px 0;
}

.stat-item {
  padding: 20px;
  text-align: center;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 14px;
  opacity: 0.85;
}

.stat-item strong {
  display: block;
  font-size: 1.4rem;
  color: var(--primary);
  margin-bottom: 4px;
}

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

.pull-quote {
  margin: 28px 0;
  padding: 24px 28px;
  border-left: 4px solid var(--accent);
  background: rgba(226, 232, 240, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 1.15rem;
  font-weight: 600;
  border-radius: 0 14px 14px 0;
}

.band-mosaic {
  margin: 28px 0;
  min-height: 180px;
  border-radius: 18px;
  background-size: cover;
  background-position: center;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.band-mosaic::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15, 23, 42, 0.55), rgba(15, 23, 42, 0.15));
}

.band-mosaic span {
  position: relative;
  z-index: 1;
  display: inline-block;
  margin: 28px;
  color: #fff;
  font-weight: 700;
  font-size: 1.2rem;
  max-width: 420px;
}

.criteria-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  font-size: 0.92rem;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 12px;
  overflow: hidden;
}

.criteria-table th,
.criteria-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.criteria-table th {
  background: rgba(51, 65, 85, 0.08);
  font-weight: 700;
}

.stack-cards {
  display: grid;
  gap: 14px;
  margin: 20px 0;
}

.stack-card {
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 14px;
  opacity: 0.9;
}

.stack-card:nth-child(2) {
  opacity: 0.78;
  margin-left: 12px;
}

.stack-card:nth-child(3) {
  opacity: 0.68;
  margin-left: 24px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 24px 0;
}

.callout {
  padding: 18px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

@media (max-width: 860px) {
  .topic-split,
  .two-col,
  .stat-band {
    grid-template-columns: 1fr;
  }

  .topic-rail {
    position: static;
  }

  .stack-card:nth-child(2),
  .stack-card:nth-child(3) {
    margin-left: 0;
  }
}