.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  transition: box-shadow 250ms ease;
}

.site-header.scrolled {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.public-mobile-bar {
  display: none;
}

.home-page .site-header {
  position: fixed;
  left: 0;
  right: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.54), rgba(0, 0, 0, 0));
  border-bottom: 0;
}

.home-page .site-header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.home-page .site-header:not(.scrolled) .brand,
.home-page .site-header:not(.scrolled) .brand-text small,
.home-page .site-header:not(.scrolled) .primary-nav > a,
.home-page .site-header:not(.scrolled) .nav-item > button {
  color: var(--surface-white);
}

.home-page .site-header:not(.scrolled) .brand-mark {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.72);
}

.home-page .site-header:not(.scrolled) .nav-toggle span:not(.sr-only) {
  background: var(--surface-white);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text-primary);
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  background: var(--color-primary);
  color: var(--surface-white);
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
}

.brand-text small {
  display: block;
  color: var(--color-text-secondary);
  font-family: var(--font-body);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.primary-nav a,
.nav-item > button {
  color: var(--color-text-primary);
  font: 500 0.94rem var(--font-body);
  text-decoration: none;
}

.nav-item {
  position: relative;
}

.nav-item > button {
  min-height: 72px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-item > button::after {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.nav-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  min-width: 270px;
  display: grid;
  gap: 2px;
  padding: 14px;
  border-radius: 8px;
  background: var(--surface-white);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.14);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.nav-menu-wide {
  left: auto;
  right: 0;
  min-width: 620px;
  grid-template-columns: 1.1fr 0.75fr 1.3fr;
  gap: 18px;
  transform: translate(0, -8px);
}

.nav-item:hover .nav-menu,
.nav-item:focus-within .nav-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.nav-item:hover .nav-menu-wide,
.nav-item:focus-within .nav-menu-wide {
  transform: translate(0, 0);
}

.nav-menu a,
.nav-menu span {
  display: block;
  border-radius: 5px;
  padding: 9px 10px;
  color: var(--color-text-primary);
  font-size: 0.9rem;
  line-height: 1.35;
}

.nav-menu span {
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  background: var(--surface-red);
  color: var(--color-primary);
  outline: 0;
}

.nav-cta {
  padding-inline: 20px;
}

.nav-toggle {
  display: none;
}

@media (max-width: 940px) {
  .site-header,
  .home-page .site-header,
  .home-page .site-header.scrolled {
    position: sticky;
    top: 0;
    background: var(--color-primary);
    border-bottom: 0;
  }

  .public-mobile-bar {
    min-height: 60px;
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr) 64px;
    align-items: center;
    background: var(--color-primary);
    color: var(--surface-white);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
  }

  .public-mobile-brand {
    overflow: hidden;
    color: var(--surface-white);
    font-family: var(--font-display);
    font-size: 1.12rem;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .public-mobile-cta {
    min-height: 60px;
    display: grid;
    place-items: center;
    color: var(--surface-white);
    font-size: 0.86rem;
    font-weight: 700;
    text-decoration: none;
  }

  .header-inner {
    width: 100%;
    min-height: 0;
    display: block;
  }

  .header-inner > .brand {
    display: none;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .brand-text {
    font-size: 0.96rem;
  }

  .nav-toggle {
    width: 56px;
    height: 60px;
    display: grid;
    gap: 4px;
    place-content: center;
    border: 0;
    background: transparent;
    cursor: pointer;
  }

  .nav-toggle span:not(.sr-only) {
    width: 22px;
    height: 2px;
    background: var(--surface-white);
  }

  .primary-nav {
    position: absolute;
    inset: 60px 0 auto;
    max-height: calc(100vh - 60px);
    display: none;
    overflow-y: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0;
    background: var(--surface-white);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  }

  .home-page .site-header:not(.scrolled) .primary-nav > a:not(.nav-cta),
  .home-page .site-header:not(.scrolled) .nav-item > button {
    color: var(--color-text-primary);
  }

  .primary-nav.is-open {
    display: flex;
  }

  .primary-nav > a:not(.nav-cta),
  .nav-item > button {
    min-height: 52px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: 0 18px;
    background: var(--surface-white);
    color: var(--color-text-primary);
    font: 700 0.98rem var(--font-body);
    text-align: left;
  }

  .nav-item > button::after {
    width: 8px;
    height: 8px;
    margin-left: 16px;
    transform: rotate(45deg);
    transition: transform 180ms ease;
  }

  .nav-item.is-expanded > button::after {
    transform: rotate(225deg);
  }

  .nav-item {
    width: 100%;
  }

  .nav-menu,
  .nav-menu-wide {
    position: static;
    left: auto;
    right: auto;
    min-width: 0;
    width: 100%;
    display: none;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 6px 0;
    border-radius: 0;
    background: var(--surface-light);
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    transition: none;
  }

  .nav-item:hover .nav-menu,
  .nav-item:focus-within .nav-menu,
  .nav-item:hover .nav-menu-wide,
  .nav-item:focus-within .nav-menu-wide {
    transform: none;
  }

  .nav-item.is-expanded > .nav-menu,
  .nav-item.is-expanded > .nav-menu-wide {
    display: grid;
  }

  .nav-menu > div {
    display: grid;
    width: 100%;
  }

  .nav-menu > div + div {
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    margin-top: 6px;
    padding-top: 6px;
  }

  .nav-menu a,
  .nav-menu span {
    width: 100%;
    border-radius: 0;
    padding: 10px 18px 10px 34px;
    font-size: 0.94rem;
    line-height: 1.35;
    text-align: left;
  }

  .nav-menu span {
    padding-bottom: 4px;
    color: var(--color-text-secondary);
    font-size: 0.74rem;
  }

  .nav-cta {
    width: calc(100% - 36px);
    margin: 16px 18px 18px;
  }
}