/* Shared by the main site and the blog. Keep header geometry independent of page content. */
html { scrollbar-gutter: stable; }

.site-header {
  --header-bg: #fafaf7;
  --header-ink: #111110;
  --header-muted: #666660;
  --header-line: #e1e1da;
  --header-accent: #cc3d00;
  --header-pad: clamp(20px, 4vw, 48px);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--header-line);
  background: color-mix(in srgb, var(--header-bg) 88%, transparent);
  color: var(--header-ink);
  font-family: "Helvetica Now Text", "Neue Haas Grotesk", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 17px;
  font-weight: 400;
  line-height: 1.55;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.site-header *, .site-header *::before, .site-header *::after { box-sizing: border-box; }
.site-header a { color: inherit; text-decoration: none; }
.site-header :focus-visible { outline: 2px solid var(--header-accent); outline-offset: 4px; border-radius: 2px; }
.site-header .header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  max-width: 1240px;
  height: 68px;
  min-height: 68px;
  margin-inline: auto;
  padding-inline: var(--header-pad);
}
.site-header .logo {
  flex: none;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -.03em;
}
.site-header .logo sup {
  margin-left: 2px;
  color: var(--header-accent);
  font-size: .75em;
  font-weight: 500;
  line-height: 0;
  vertical-align: super;
}
.site-header .site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.5vw, 36px);
  margin: 0;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.55;
  white-space: nowrap;
}
.site-header .site-nav > a:not(.header-contact) {
  color: var(--header-muted);
  letter-spacing: .02em;
  transition: color .18s ease;
}
.site-header .site-nav > a:hover,
.site-header .site-nav > a[aria-current="page"] { color: var(--header-ink); }
.site-header .language-switch {
  display: inline-flex;
  gap: 2px;
  padding: 2px;
  border: 1px solid var(--header-line);
  border-radius: 999px;
}
.site-header .language-switch a {
  padding: 5px 7px;
  border-radius: 999px;
  color: var(--header-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
}
.site-header .language-switch a[aria-current="page"] { background: var(--header-ink); color: var(--header-bg); }
.site-header .header-contact {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 20px;
  border: 1px solid var(--header-ink);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  transition: background .18s ease, color .18s ease;
}
.site-header .header-contact:hover { background: var(--header-ink); color: var(--header-bg); }
.site-header .menu-toggle { display: none; }

@media (max-width: 980px) {
  .site-header .menu-toggle {
    display: inline-flex;
    order: 3;
    align-items: center;
    justify-content: center;
    min-width: 86px;
    min-height: 44px;
    padding: 8px 13px;
    border: 1px solid var(--header-ink);
    border-radius: 999px;
    color: var(--header-ink);
    background: transparent;
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
  }
  .site-header .site-nav { order: 2; margin-left: auto; gap: 0; }
  .site-header .site-nav > a { display: none; }
  .site-header .site-nav.is-open {
    position: absolute;
    z-index: 60;
    top: 100%;
    right: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin-left: 0;
    padding: 12px var(--header-pad) 18px;
    border-bottom: 1px solid var(--header-line);
    background: var(--header-bg);
    box-shadow: 0 18px 34px rgba(17, 17, 16, .1);
  }
  .site-header .site-nav.is-open > a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 4px;
    color: var(--header-ink);
    font-size: 16px;
  }
  .site-header .site-nav.is-open .language-switch { align-self: flex-start; margin-block: 6px; }
  .site-header .site-nav.is-open > .header-contact { justify-content: center; margin-top: 6px; }
}

@media (max-width: 390px) {
  .site-header .header-inner { gap: 8px; }
  .site-header .menu-toggle { padding-inline: 11px; }
}