/* Shared cross-domain navigation contract.
   The three public roots use the same geometry and interaction states. */
:root {
  --nav-ink: #11171d;
  --nav-paper: #f4f1ea;
  --nav-line: rgba(17, 23, 29, .16);
  --nav-accent: #e43d3d;
  --nav-muted: #566068;
}

.cross-site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  color: var(--nav-ink);
  background: rgba(244, 241, 234, .94);
  border-bottom: 1px solid var(--nav-line);
  backdrop-filter: blur(18px);
}

.cross-site-nav-wrap {
  width: min(1320px, calc(100% - 48px));
  min-height: 78px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cross-site-brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  width: 72px;
  min-height: 72px;
  aspect-ratio: 1;
  color: inherit;
  text-decoration: none;
}

.cross-site-brand img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: none;
  aspect-ratio: 1;
  object-fit: contain;
}

.cross-site-brand:focus-visible,
.cross-site-menu-button:focus-visible,
.cross-site-nav a:focus-visible {
  outline: 3px solid var(--nav-accent);
  outline-offset: 5px;
}

.cross-site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(18px, 2.2vw, 34px);
  font: 600 12px/1.3 var(--mono, "Cascadia Mono", Consolas, monospace);
  letter-spacing: .04em;
}

.cross-site-nav a {
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: inherit;
  text-decoration: none;
  white-space: nowrap;
}

.cross-site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 5px;
  height: 2px;
  background: var(--nav-accent);
  transition: right .2s ease;
}

.cross-site-nav a:hover::after,
.cross-site-nav a:focus-visible::after,
.cross-site-nav a[aria-current="page"]::after {
  right: 0;
}

.cross-site-nav .cross-site-cta {
  min-height: 44px;
  padding: 0 16px;
  color: var(--nav-paper);
  background: var(--nav-ink);
}

.cross-site-nav .cross-site-cta::after { display: none; }

.cross-site-menu-button {
  display: none;
  min-width: 44px;
  min-height: 44px;
  padding: 0 12px;
  color: inherit;
  background: transparent;
  border: 1px solid var(--nav-line);
  cursor: pointer;
  font: 700 12px/1 var(--mono, "Cascadia Mono", Consolas, monospace);
}

@media (max-width: 1080px) {
  .cross-site-nav-wrap { min-height: 70px; }
  .cross-site-brand { width: 64px; min-height: 64px; }
  .cross-site-menu-button { display: inline-flex; align-items: center; justify-content: center; }
  .cross-site-nav {
    position: absolute;
    top: 70px;
    left: 16px;
    right: 16px;
    display: none;
    padding: 10px 16px 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    color: var(--nav-ink);
    background: var(--nav-paper);
    border: 1px solid var(--nav-line);
    border-top: 0;
    box-shadow: 0 18px 38px rgba(17, 23, 29, .12);
  }
  .cross-site-nav.is-open { display: flex; }
  .cross-site-nav a { min-height: 48px; padding: 4px 0; }
  .cross-site-nav a::after { bottom: 1px; }
  .cross-site-nav .cross-site-cta { justify-content: center; margin-top: 8px; }
}

@media (max-width: 560px) {
  .cross-site-nav-wrap { width: calc(100% - 32px); }
  .cross-site-brand { width: 56px; min-height: 56px; }
  .cross-site-nav { left: 8px; right: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .cross-site-nav a::after { transition: none; }
}