.sobre-manifesto__grid { max-width: 900px; }
.sobre-manifesto__text { margin-top: var(--sp-4); }

.principles-list { max-width: 900px; }

.sobre-demo__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-7);
  margin-top: var(--sp-7);
}

@media (max-width: 860px) {
  .sobre-demo__grid { grid-template-columns: 1fr; gap: var(--sp-2); }
}