/* Spire architecture: responsibilities and boundaries, without private topology. */
.spire-hero { padding: 66px 0 56px; }
.spire-hero h1 { font-size: clamp(40px, 5.4vw, 66px); line-height: 1.08; letter-spacing: -.04em; }
.spire-hero .lede { max-width: 760px; margin-top: 26px; }
.spire-intro-links { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 28px; font-size: 14px; }
.spire-intro-links a { text-decoration: underline; text-underline-offset: 4px; }
.spire-rooms { margin: 26px 0; }
.spire-rooms > div { padding: 20px 0; border-top: 1px solid var(--rule); display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 24px; }
.spire-rooms dt { color: var(--ink); font-weight: 500; }
.spire-rooms dd { font-size: 15px; line-height: 1.7; }
.spire-evidence { margin-top: 30px; border-top: 1px solid var(--rule); padding-top: 24px; }
.spire-evidence h2 { font-size: 18px; margin-bottom: 12px; }
.spire-evidence p { font-size: 14px; }
@media (max-width: 760px) {
  .spire-rooms > div { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 540px) {
  .spire-hero { padding: 44px 0; }
}