/* ---------- seção "prova" (números da operação) ---------- */
.proof {
  padding-bottom: var(--section-y);
}

.proof .rule {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 4vw, 48px);
}

.stat .v {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1;
  color: var(--text);
}

.stat .l {
  max-width: 22ch;
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 14.5px;
}

@media (max-width: 760px) {
  .stats {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}