@layer layout {
  .container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--gutter);
  }

  /* -- Sections ------------------------------------------------------------ */

  .section {
    padding: var(--section-y) 0;
  }

  .section--lg {
    padding: var(--section-y-lg) 0;
  }

  .section--tight {
    padding: 2.5rem 0;
  }

  /* A banded section, edge to edge, delimited by hairlines. */
  .section--band {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    padding-bottom: 1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
  }

  .section-heading {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
  }

  .section-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-tertiary);
  }

  .section-title {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.01em;
  }

  /* Sections that carry the narrative get a display-sized title. */
  .section-title--display {
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
  }

  .section-lede {
    max-width: 62ch;
    margin-top: 1rem;
    font-size: 1.05rem;
    font-weight: 300;
    line-height: 1.75;
    color: var(--text-secondary);
  }

  .section-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.85rem;
    color: var(--accent);
    white-space: nowrap;
    transition: gap var(--dur-fast);
  }

  .section-link:hover {
    gap: 0.5rem;
  }

  @media (max-width: 768px) {
    .section-header {
      flex-direction: column;
      align-items: flex-start;
      gap: 0.5rem;
    }
  }

  /* -- Card grid -------------------------------------------------------------
     Each cell is its own soft-edged surface with a gap between, rather than a
     shared hairline rule — cards, not a ruled table.
     ------------------------------------------------------------------------ */

  .grid {
    display: grid;
    gap: 1.25rem;
  }

  .grid > * {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition:
      border-color var(--dur-fast),
      box-shadow var(--dur-fast),
      transform var(--dur-fast);
  }

  .grid > *:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
  }

  .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--auto {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }

  @media (max-width: 900px) {
    .grid--3,
    .grid--4 {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (max-width: 600px) {
    .grid--2,
    .grid--3,
    .grid--4 {
      grid-template-columns: 1fr;
    }
  }

  /* -- Split ---------------------------------------------------------------- */

  .split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
  }

  .split--wide-right {
    grid-template-columns: 1fr 1.4fr;
  }

  @media (max-width: 900px) {
    .split,
    .split--wide-right {
      grid-template-columns: 1fr;
      gap: 2.5rem;
    }
  }

  /* -- Prose column --------------------------------------------------------- */

  .measure {
    max-width: 68ch;
  }
}