.page-shell {
  padding: var(--space-8);
}

.page-shell--narrow {
  max-width: 780px;
  margin: 0 auto;
}

.page-header-block {
  margin: 0 auto var(--space-8);
  text-align: center;
}

.section-stack {
  display: grid;
  gap: var(--space-4);
}

.card-split {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.card-split__aside {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: space-between;
}

@media (max-width: 840px) {
  .card-split {
    flex-direction: column;
  }

  .card-split__aside {
    align-items: stretch;
    gap: var(--space-3);
  }
}