.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--wide   { max-width: var(--container-wide); }
.container--narrow { max-width: var(--container-narrow); }

.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

.section--alt  { background: var(--color-surface-alt); }
.section--dark { background: var(--color-dark); color: var(--color-text-inverse); }
.section--dark p { color: rgba(250,250,248,.7); }

.section-header {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}

.section-header h2 { margin-bottom: var(--space-4); }
.section-header p  { margin-inline: auto; }

.grid-2 { display: grid; grid-template-columns: 1fr; gap: var(--space-8); }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(2,1fr); gap: var(--space-6); }

@media (min-width: 640px)  {
  .grid-3 { grid-template-columns: repeat(2,1fr); }
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2,1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3,1fr); }
  .grid-4 { grid-template-columns: repeat(4,1fr); }
}

.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed { opacity: 1; transform: translateY(0); }

.reveal[data-delay="1"] { transition-delay: 100ms; }
.reveal[data-delay="2"] { transition-delay: 200ms; }
.reveal[data-delay="3"] { transition-delay: 300ms; }
.reveal[data-delay="4"] { transition-delay: 400ms; }
.reveal[data-delay="5"] { transition-delay: 500ms; }