.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

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

section {
  padding: var(--space-24) 0;
  position: relative;
}

section.section--hero { padding: 0; }

/* Dark: hero + footer ONLY */
.section--dark {
  background: var(--color-primary);
}
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 {
  color: var(--color-neutral-200);
}
.section--dark p { color: rgba(255, 255, 255, 0.55); }
.section--dark a { color: var(--color-accent); }
.section--dark a:hover { color: var(--color-accent-hover); }

.section--surface { background: var(--color-surface); }

/* Rule line separator — replaces background color alternation */
.rule {
  border: none;
  height: 1px;
  background: var(--color-neutral-200);
  margin: 0;
  position: relative;
}
.rule::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: -1px;
  width: 40px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

.grid {
  display: grid;
  gap: var(--space-8);
}
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--1-2 { grid-template-columns: 1fr 2fr; }
.grid--2-1 { grid-template-columns: 2fr 1fr; }
.grid--sidebar { grid-template-columns: 360px 1fr; gap: var(--space-16); }

.flex { display: flex; align-items: center; }
.flex--between { justify-content: space-between; }
.flex--center { justify-content: center; }
.flex--col { flex-direction: column; }
.flex--wrap { flex-wrap: wrap; }
.flex--gap-4 { gap: var(--space-4); }
.flex--gap-6 { gap: var(--space-6); }

.text-center { text-align: center; }

/* Section label: understated, neutral */
.section__eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-neutral-500);
  margin-bottom: var(--space-4);
}

.section__heading { margin-bottom: var(--space-4); }

.section__lead {
  font-size: var(--text-lg);
  color: var(--color-neutral-600);
  max-width: 640px;
  line-height: var(--leading-normal);
}
.text-center .section__lead { margin: 0 auto; }

.section__header { margin-bottom: var(--space-16); }

@media (max-width: 1024px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--sidebar { grid-template-columns: 1fr; gap: var(--space-10); }
}

@media (max-width: 768px) {
  section { padding: var(--space-16) 0; }
  .container { padding: 0 var(--space-10); }
  .grid--2, .grid--3, .grid--4, .grid--1-2, .grid--2-1 { grid-template-columns: 1fr; }
  .section__header { margin-bottom: var(--space-10); }
}