/* ── RPA 4-Part Transformation Model ─────────── */

.model__header {
  text-align: center;
  max-width: 660px;
  margin: 0 auto 4rem;
}

.model__header h2 {
  color: var(--color-base);
  margin-bottom: 1rem;
}

.model__header p {
  color: var(--color-muted);
  font-size: 1.0625rem;
}

.model__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.model-card {
  background: var(--color-cream);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.model-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(31, 31, 31, 0.08);
}

.model-card__num {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  font-family: var(--font-display);
  font-size: 5.5rem;
  font-weight: 400;
  color: var(--color-accent);
  opacity: 0.12;
  line-height: 1;
  letter-spacing: 0.04em;
  pointer-events: none;
}

.model-card__step {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.model-card h3 {
  color: var(--color-base);
  margin-bottom: 0.875rem;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
}

.model-card p {
  color: var(--color-muted);
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* ── Mobile ───────────────────────────────────── */
@media (max-width: 768px) {
  .model__grid {
    grid-template-columns: 1fr;
    max-width: 540px;
  }
}