.whitepaper-mockup {
  display: grid;
  justify-items: center;
  gap: 1.25rem;
  min-height: 480px;
  padding: 2rem;
  text-align: center;
}

.paper-cover {
  display: grid;
  align-content: space-between;
  width: min(310px, 78vw);
  aspect-ratio: 0.72;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 22px;
  background:
    linear-gradient(155deg, rgba(37, 99, 235, 0.42), rgba(6, 182, 212, 0.08)),
    rgba(2, 6, 23, 0.9);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.42);
  text-align: left;
}

.paper-cover span,
.paper-cover small {
  color: var(--color-text-secondary);
  font-weight: 800;
}

.paper-cover strong {
  align-self: center;
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: 2.8rem;
  line-height: 1;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.paper-page {
  display: grid;
  min-height: 360px;
  align-content: start;
  gap: 1rem;
  padding: 1.4rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
    rgba(15, 23, 42, 0.78);
  box-shadow: var(--shadow-card);
}

.paper-page span {
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

.paper-page h3 {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-divider);
}

@media (max-width: 1050px) {
  .preview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .preview-grid {
    grid-template-columns: 1fr;
  }
}