/* Persistent navigation; the navy surface appears as the opening scrolls away. */
:root {
  --site-header-height: 92px;
  --site-header-clearance: 108px;
}
html { scroll-padding-top: var(--site-header-clearance); }
main :focus-visible { scroll-margin-top: 12px; }
.site-header {
  --header-gutter: max(var(--gutter), calc((100vw - 1650px) / 2));
  position: fixed;
  top: 0;
  left: 0;
  transform: none;
  width: 100%;
  max-width: none;
  height: var(--site-header-height);
  min-height: 0;
  margin: 0;
  padding: 0 var(--header-gutter);
  gap: 28px;
  color: var(--mg-pure);
  background: var(--mg-blues);
  border: 0;
  border-radius: 0;
  box-shadow: none;
}
.site-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--header-gutter);
  right: var(--header-gutter);
  height: 1px;
  background: #FFFFFF30;
  pointer-events: none;
}
.js .site-header:not(.is-scrolled) { background: transparent; }
.site-header .brand { width: 176px; }
.site-header .brand img { width: 100%; height: auto; }
.site-header nav { gap: 30px; font-size: 13px; }
.site-header nav > a:not(.button) { color: #FFFFFFD9; padding: 14px 0; }
.site-header nav > a:not(.button):hover { color: var(--mg-pure); }
.site-header nav > a[aria-current="page"]:not(.button) {
  color: var(--mg-pure);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--mg-keppel);
  text-decoration-thickness: 2px;
  text-underline-offset: 8px;
}
.site-header .button {
  min-height: 44px;
  margin: 0;
  padding: 10px 19px;
  gap: 26px;
  border-radius: 100px;
  font-size: 13px;
}
.site-header .button span { font-size: 20px; }
.site-header .menu-toggle { color: var(--mg-pure); }
.site-header .menu-toggle[hidden],
.site-header .header-contact-mobile { display: none; }
.site-header a:focus-visible,
.site-header button:focus-visible { outline-color: var(--mg-pure); }

/* Without scripts, leave navigation in the document so it cannot obscure content. */
html:not(.js) .site-header { position: relative; background: var(--mg-blues); }

@media (max-width: 1100px) {
  .site-header { gap: 24px; }
  .site-header .brand { width: 156px; }
  .site-header nav { gap: 22px; font-size: 12px; }
}

@media (max-width: 800px) {
  :root {
    --site-header-height: 80px;
    --site-header-clearance: 96px;
  }
  .site-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    grid-template-rows: var(--site-header-height) auto;
    align-items: center;
    height: auto;
    min-height: var(--site-header-height);
    gap: 0 12px;
  }
  .site-header .brand { width: 148px; max-width: 100%; }
  .js .site-header:has(nav.is-open) { background: var(--mg-blues); }
  .js .site-header .header-contact-mobile {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 8px 11px;
    border: 1px solid var(--mg-keppel);
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--mg-blues);
    background: var(--mg-keppel);
  }
  .site-header .header-contact-mobile:hover { background: #32C1B5; }
  .site-header .menu-toggle {
    min-height: 44px;
    padding: 8px 0 8px 6px;
    gap: 7px;
    font-size: 12px;
  }
  .site-header nav {
    grid-column: 1 / -1;
    width: 100%;
    padding: 0 0 22px;
    background: var(--mg-blues);
    font-size: 15px;
  }
  .js .site-header nav { display: none; }
  .js .site-header nav.is-open {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 0;
    max-height: calc(100vh - var(--site-header-height));
    max-height: calc(100svh - var(--site-header-height));
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 0 0 24px;
  }
  .site-header nav > a:not(.button) { flex: 0 0 auto; padding: 14px 0; }
  .js .site-header nav > .button { display: none; }
  html:not(.js) .site-header nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  html:not(.js) .site-header nav > .button { margin-top: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
@media (forced-colors: active) {
  .site-header,
  .js .site-header:not(.is-scrolled),
  .js .site-header:has(nav.is-open) { background: Canvas; border-bottom: 1px solid CanvasText; }
  .site-header::after { content: none; }
  .site-header a:focus-visible,
  .site-header button:focus-visible { outline-color: Highlight; }
  .site-header .brand img {
    forced-color-adjust: none;
    background: #160F3E;
  }
}