/* Shared shell for every indexed guide. Page-specific teaching instruments
   remain local; this file owns the repeated reading frame and footer. */

.page-shell .site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 40px;
  border-bottom: 1px solid #2c2c2c;
}

.page-shell h1 {
  max-width: 15ch;
  margin: 26px 0 0;
  color: #fff;
  font-size: var(--type-display-xl);
  font-variation-settings: 'wdth' 88, 'wght' 700;
  font-weight: 700;
  letter-spacing: -.022em;
  line-height: 1.04;
  text-wrap: balance;
}

.page-shell h2 {
  margin: 52px 0 12px;
  color: #fff;
  font-size: var(--type-display);
  font-variation-settings: 'wdth' 88, 'wght' 700;
  font-weight: 700;
  letter-spacing: -.018em;
  line-height: 1.15;
  text-wrap: balance;
}

.page-shell .standfirst {
  max-width: 56ch;
  margin: 18px 0 0;
  color: #c9bda9;
  font-size: var(--type-title);
  line-height: 1.45;
  text-wrap: pretty;
}

.page-shell .site-footer {
  padding: 34px 40px;
  border-top: 1px solid #2c2c2c;
  color: var(--muted);
  font-size: var(--type-body-sm);
}

.page-shell .footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 26px;
}

.page-shell .footer-grid p {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.page-shell .footer-grid p a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--muted);
}

.page-shell .trademark {
  max-width: 72ch;
  padding-top: 20px;
  border-top: 1px solid var(--card);
}

@media (max-width: 900px) {
  .page-shell .site-header,
  .page-shell .site-footer { padding-right: 24px; padding-left: 24px; }
}

@media (max-width: 640px) {
  .page-shell .site-header { padding: 12px 20px; }
  .page-shell .footer-grid { grid-template-columns: 1fr 1fr; }
  .page-shell .footer-grid > div:first-child { grid-column: 1 / -1; }
  .page-shell .site-footer { padding-right: 20px; padding-left: 20px; }
}