.sub-hero {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 48px 0;
  position: relative;
  z-index: 1;
}

.sub-hero::after {
  content: "REF: WO-001";
  position: absolute;
  top: 16px;
  right: 24px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  opacity: 0.5;
}

.sub-hero h1 {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 12px;
}

.sub-hero p {
  color: var(--muted);
  max-width: 640px;
  font-size: 1rem;
}

.sub-body {
  padding: 48px 0 64px;
  position: relative;
  z-index: 1;
}

.sub-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}

.sub-main h2 {
  font-size: 1.25rem;
  color: var(--accent);
  margin: 32px 0 12px;
  padding-left: 12px;
  border-left: 2px solid var(--primary);
}

.sub-main h2:first-of-type {
  margin-top: 0;
}

.sub-main p {
  font-size: 0.9375rem;
  line-height: 1.75;
  margin-bottom: 16px;
  color: var(--text);
}

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

.sidebar-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-panel h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 12px;
}

.sidebar-panel ul {
  list-style: none;
}

.sidebar-panel li {
  font-size: 0.8125rem;
  color: var(--muted);
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.sidebar-img {
  max-width: 100%;
  max-height: 200px;
  object-fit: cover;
  border: 1px solid var(--border);
  margin-bottom: 16px;
}

.callout-box {
  background: rgba(45, 212, 191, 0.08);
  border: 1px solid var(--accent);
  padding: 20px 24px;
  margin: 24px 0;
  font-size: 0.875rem;
  color: var(--text);
}

@media (max-width: 767px) {
  .sub-grid {
    grid-template-columns: 1fr;
  }
  .sub-sidebar {
    position: static;
  }
  .sidebar-img {
    max-width: 100%;
    width: 100%;
    height: auto;
    object-fit: contain;
  }
}