.site-header {
  position: relative;
  z-index: 40;
  gap: 24px;
}

.site-header > .brand {
  max-width: calc(100% - 72px);
}

/* Without script, links stay available in the document. */
.site-header:not(.menu-enhanced) {
  flex-wrap: wrap;
}

.site-header .menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  min-width: 44px;
  min-height: 44px;
  margin-left: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
}

.site-header.menu-enhanced .menu-toggle {
  display: inline-flex;
}

.site-header .menu-toggle i,
.site-header .menu-toggle[aria-expanded=true] i {
  position: relative;
  display: block;
  width: 28px;
  height: 12px;
  border: 0;
  transform: none;
}

.site-header .menu-toggle i::before,
.site-header .menu-toggle i::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform-origin: center;
  transition: transform 220ms ease;
}

.site-header .menu-toggle i::before { top: 2px; }
.site-header .menu-toggle i::after { bottom: 2px; }
.site-header .menu-toggle[aria-expanded=true] i::before { transform: translateY(3.5px) rotate(45deg); }
.site-header .menu-toggle[aria-expanded=true] i::after { transform: translateY(-3.5px) rotate(-45deg); }

.site-header .site-nav {
  position: static;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  flex-basis: 100%;
  gap: 28px;
  width: 100%;
  min-width: 0;
  padding: 32px 0 0;
  border: 0;
  background: var(--paper);
}

.site-header.menu-enhanced .site-nav {
  position: absolute;
  top: calc(100% - 1px);
  right: 0;
  left: auto;
  z-index: 41;
  width: min(540px, 100%);
  max-height: var(--navigation-room, calc(100svh - 180px));
  padding: 34px 44px 38px;
  border: 1px solid var(--line);
  box-shadow: 0 22px 44px rgb(23 23 23 / 4%);
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}

.site-header.menu-enhanced .site-nav[hidden] {
  display: none !important;
}

.site-header.menu-enhanced .site-nav.is-open {
  display: flex;
  animation: navigation-open 240ms cubic-bezier(.22, .68, 0, 1) both;
}

.site-header .site-nav .nav-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
  margin: 0;
  padding: 0;
  font-size: clamp(32px, 3.7vw, 48px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -.04em;
}

.site-header .site-nav .nav-links li {
  max-width: 100%;
}

.site-header .site-nav .nav-links a {
  width: fit-content;
  max-width: 100%;
  min-height: 44px;
  padding: 8px 0;
  overflow-wrap: anywhere;
}

.site-header .site-nav .nav-links a::after {
  bottom: 4px;
}

.site-header .site-nav .nav-brief {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 0;
  padding: 21px 0 0;
  border: 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0;
}

.site-header .site-nav .nav-brief:hover {
  color: var(--ink);
  background: transparent;
}

.site-header .site-nav .nav-brief span {
  font-size: 22px;
}

@keyframes navigation-open {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 780px) {
  .site-header { gap: 16px; }
  .site-header.menu-enhanced .site-nav {
    width: 100%;
    gap: 22px;
    padding: 24px 25px 27px;
  }
  .site-header .site-nav .nav-links {
    gap: 4px;
    font-size: clamp(30px, 7.5vw, 42px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header .menu-toggle i::before,
  .site-header .menu-toggle i::after { transition: none; }
  .site-header.menu-enhanced .site-nav.is-open { animation: none; }
}

@media print {
  .site-header .menu-toggle,
  .site-header .site-nav { display: none !important; }
}

.site-header .language-switch{margin-left:auto;display:flex;align-items:center;gap:10px;font-size:10px;letter-spacing:.06em}.site-header .language-switch a{padding:14px 3px;color:var(--gray)}.site-header .language-switch a[aria-current=page]{color:var(--ink);text-decoration:underline;text-underline-offset:5px}.site-header .language-switch+.menu-toggle{margin-left:10px}@media(max-width:780px){.site-header{column-gap:14px}.site-header>.brand{max-width:calc(100% - 126px)}.site-header .language-switch{gap:5px;font-size:9px}.site-header .language-switch+.menu-toggle{margin-left:0;width:44px}}