.topic-hero {
  position: relative;
  padding: 56px 24px 48px;
  background: linear-gradient(135deg, rgba(59,130,246,0.18), rgba(18,27,46,0.95));
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.topic-hero::after {
  content: "";
  position: absolute;
  right: 8%;
  top: 20%;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(34,197,94,0.25);
  border-radius: 50%;
  pointer-events: none;
}

.topic-hero-inner {
  max-width: 960px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.topic-hero h1 {
  font-size: clamp(26px, 4vw, 36px);
  margin-bottom: 12px;
}

.topic-hero .lede {
  color: var(--muted);
  font-size: 16px;
  max-width: 640px;
}

.topic-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 60px;
}

.topic-split {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  align-items: start;
}

.topic-prose h2 {
  font-size: 20px;
  color: var(--primary);
  margin: 28px 0 12px;
}

.topic-prose h3 {
  font-size: 16px;
  margin: 20px 0 8px;
}

.topic-prose p {
  color: var(--muted);
  margin-bottom: 14px;
}

.topic-prose ul {
  margin: 0 0 16px 20px;
  color: var(--muted);
}

.topic-prose li {
  margin-bottom: 8px;
}

.topic-rail {
  position: sticky;
  top: 88px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}

.topic-rail h3 {
  font-size: 13px;
  font-family: "SF Mono", "Consolas", monospace;
  color: var(--secondary);
  margin-bottom: 12px;
}

.topic-rail ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topic-rail li {
  font-size: 13px;
  color: var(--muted);
  padding: 8px 10px;
  background: rgba(11,18,32,0.5);
  border-radius: 8px;
}

.topic-band {
  margin: 36px 0;
  border-radius: 16px;
  overflow: hidden;
  min-height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.topic-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11,18,32,0.85), rgba(11,18,32,0.35));
}

.topic-band-inner {
  position: relative;
  z-index: 1;
  padding: 36px 28px;
  max-width: 520px;
}

.topic-band-inner p {
  color: var(--text);
  font-size: 15px;
}

.topic-quote {
  margin: 28px 0;
  padding: 20px 24px;
  border-left: 4px solid var(--accent);
  background: rgba(167,139,250,0.08);
  border-radius: 0 12px 12px 0;
  font-size: 17px;
  color: var(--text);
  font-style: italic;
}

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

.topic-stat {
  background: rgba(234,240,255,0.95);
  color: #0f172a;
  border-radius: 12px;
  padding: 18px;
  text-align: center;
}

.topic-stat strong {
  display: block;
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 22px;
  color: #1d4ed8;
  margin-bottom: 4px;
}

.topic-stat span {
  font-size: 12px;
  color: #475569;
}

.topic-mosaic {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 16px;
  margin: 28px 0;
}

.topic-mosaic img {
  max-width: 500px;
  max-height: 320px;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 12px;
}

.topic-mosaic .deco-wrap {
  overflow: hidden;
  max-width: 100%;
}

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

.bonus-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}

.bonus-card h3 {
  color: var(--secondary);
  font-size: 15px;
  margin-bottom: 10px;
}

.bonus-card p {
  color: var(--muted);
  font-size: 14px;
}

.safe-hero-strip {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 0;
  min-height: 280px;
  border-bottom: 1px solid var(--border);
}

.safe-hero-copy {
  padding: 48px 32px;
  background: linear-gradient(160deg, #121B2E, #0B1220);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.safe-hero-copy h1 {
  margin-bottom: 12px;
}

.safe-hero-copy p {
  color: var(--muted);
  max-width: 480px;
}

.safe-hero-visual {
  background-size: cover;
  background-position: center;
  min-height: 220px;
}

.safe-timeline {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 24px 48px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.safe-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.safe-step-num {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(59,130,246,0.2);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "SF Mono", "Consolas", monospace;
  font-weight: 700;
}

.safe-step h2 {
  font-size: 18px;
  margin-bottom: 8px;
}

.safe-step p {
  color: var(--muted);
}

@media (max-width: 900px) {
  .topic-split,
  .topic-mosaic,
  .bonus-columns,
  .safe-hero-strip {
    grid-template-columns: 1fr;
  }

  .topic-rail {
    position: static;
  }

  .topic-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .topic-layout,
  .topic-hero,
  .safe-timeline {
    padding-left: 16px;
    padding-right: 16px;
  }

  .topic-mosaic,
  .deco-wrap,
  .topic-band,
  .safe-hero-visual {
    overflow: hidden;
    max-width: 100%;
  }

  .topic-mosaic img,
  .deco-wrap img {
    max-width: 100%;
    max-height: 200px;
    width: 100%;
    height: auto;
  }

  .safe-hero-copy {
    padding: 36px 16px;
  }
}