.sub-hero-strip {
  padding: 56px 24px;
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

.sub-hero-strip::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(220, 38, 38, 0.1) 0%, transparent 40%, rgba(250, 204, 21, 0.06) 100%);
  pointer-events: none;
}

.sub-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.sub-hero-inner h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.sub-hero-lead {
  margin-top: 12px;
  color: var(--muted);
  font-size: 1.05rem;
}

.sub-hero-img {
  max-width: 500px;
  max-height: 320px;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.sub-hero-img img {
  width: 100%;
  object-fit: cover;
  max-height: 320px;
}

.sub-content {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px 64px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
}

.sub-sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
}

.sub-sidebar nav a {
  display: block;
  padding: 10px 0;
  color: var(--muted);
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
  transition: color 3s ease;
}

.sub-sidebar nav a:hover {
  color: var(--primary);
}

.sub-article h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 400;
  margin: 32px 0 14px;
  color: var(--text);
}

.sub-article h2:first-child {
  margin-top: 0;
}

.sub-article p {
  color: var(--muted);
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.sub-article ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.sub-article li {
  color: var(--muted);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.sub-callout {
  padding: 20px 24px;
  background: rgba(220, 38, 38, 0.08);
  border-left: 3px solid var(--primary);
  margin: 24px 0;
  border-radius: 0 8px 8px 0;
}

.sub-callout p {
  margin-bottom: 0;
  color: var(--text);
}

.crystal-light-accent {
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.04), rgba(220, 38, 38, 0.06));
}

@media (max-width: 900px) {
  .sub-hero-inner {
    grid-template-columns: 1fr;
  }

  .sub-content {
    grid-template-columns: 1fr;
  }

  .sub-sidebar {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
  }

  .sub-sidebar nav a {
    border-bottom: none;
    padding: 6px 12px;
    background: rgba(22, 3, 5, 0.6);
    border-radius: 4px;
  }
}