.layout-runway body { background: var(--theme-surface); }
.runway-shell { display: grid; grid-template-columns: 48px 1fr; min-height: 100vh; }
.runway-rail {
  writing-mode: vertical-rl; transform: rotate(180deg);
  display: flex; align-items: center; gap: 12px; padding: 24px 0;
  font-size: 0.7rem; letter-spacing: 0.3em; text-transform: uppercase;
  border-right: 2px solid var(--text-body); color: var(--text-muted);
}
.runway-body { min-width: 0; }
.runway-header {
  padding: 32px 24px 16px; border-bottom: 1px solid var(--border-color);
  max-width: var(--content-max-width);
}
.runway-mast { margin: 0; font-family: var(--font-display); font-size: clamp(2.2rem, 6vw, 4rem); font-weight: 500; line-height: 1; }
.runway-mast a { text-decoration: none; color: var(--text-body); }
.runway-deck { margin: 12px 0 0; font-size: 0.8rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--theme-accent); }
.runway-main { padding: 24px; max-width: var(--content-max-width); }
.runway-headline { font-family: var(--font-display); font-size: 1.5rem; margin: 0 0 8px; }
.runway-lead { color: var(--text-muted); margin: 0 0 28px; max-width: 50ch; }
.runway-footer {
  margin-top: 48px; padding: 32px 24px 48px;
  border-top: 3px double var(--text-body);
}
.runway-colophon { font-size: 0.85rem; color: var(--text-muted); line-height: 1.7; }
.runway-colophon em { font-family: var(--font-display); font-style: italic; color: var(--text-body); }
.runway-colophon a { color: var(--theme-accent); }
@media (max-width: 640px) {
  .runway-shell { grid-template-columns: 1fr; }
  .runway-rail { writing-mode: horizontal-tb; transform: none; border-right: none; border-bottom: 2px solid var(--text-body); padding: 12px 24px; }
}