.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 100;
  padding: 12px 20px;
  border-radius: 8px;
  background: var(--blue);
  color: var(--white);
}
.skip-link:focus { top: 16px; color: var(--white); }

body.menu-open { overflow: hidden; }

.site-header {
  --header-h: 72px;
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 24px;
}

.site-header__logo img { width: 128px; height: auto; }

.site-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-right: -12px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

.site-header__burger,
.site-header__burger::before,
.site-header__burger::after {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform .25s, background-color .25s;
}
.site-header__burger { position: relative; }
.site-header__burger::before,
.site-header__burger::after { content: ""; position: absolute; left: 0; }
.site-header__burger::before { top: -7px; }
.site-header__burger::after { top: 7px; }
.site-header.is-open .site-header__burger { background: transparent; }
.site-header.is-open .site-header__burger::before { transform: translateY(7px) rotate(45deg); }
.site-header.is-open .site-header__burger::after { transform: translateY(-7px) rotate(-45deg); }

.site-header__menu {
  position: fixed;
  top: calc(var(--header-h) + 1px);
  left: 0;
  right: 0;
  bottom: 0;
  display: none;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  padding: 24px var(--gutter) 40px;
  background: var(--white);
  overflow-y: auto;
}
.site-header.is-open .site-header__menu { display: flex; }

.site-nav {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-nav a {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--ink);
}

.site-header__actions { display: flex; flex-direction: column; gap: 20px; }
.site-header__actions .btn { width: 100%; }

.lang-switch {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.lang-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  font-size: .9375rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--muted);
}
.lang-switch a[aria-current="true"] { color: var(--blue); }
.lang-switch a:hover { color: var(--blue); }

@media (min-width: 1200px) {
  .site-header { --header-h: 88px; }
  .site-header__inner { display: grid; grid-template-columns: auto 1fr auto; gap: 40px; }
  .site-header__logo img { width: clamp(150px, 4vw + 100px, 176px); }
  .site-header__toggle { display: none; }
  .site-header__menu { display: contents; }
  .site-header__menu nav { justify-self: center; }
  .site-nav { flex-direction: row; gap: clamp(28px, 2vw, 40px); }
  .site-nav a {
    padding: 8px 0;
    border: 0;
    font-family: var(--font-sans);
    font-size: clamp(.9375rem, .8rem + .3vw, 1.125rem);
    font-weight: 500;
  }
  .site-nav a:hover { color: var(--blue); }
  .site-header__actions { flex-direction: row; align-items: center; gap: 12px; }
  .site-header__actions .btn { width: auto; }
}