.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  display: grid;
  grid-template-columns: 220px 1fr auto;
  align-items: center;
  width: 100%;
  min-height: 92px;
  padding: 18px 42px;
  border-bottom: 1px solid #ffffff26;
  color: var(--white);
  font-family: "Helvetica Neue", "Avenir Next", Arial, sans-serif;
  line-height: 1.5;
  transition: background 250ms, color 250ms, min-height 250ms, box-shadow 250ms;
}

.site-header.is-scrolled {
  min-height: 74px;
  background: #fbfaf6f5;
  color: var(--ink);
  box-shadow: 0 10px 35px #08263a14;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.brand {
  display: block;
  width: 154px;
  color: currentColor;
}

.brand img {
  width: 100%;
  filter: brightness(0) invert(1);
  transition: filter 250ms;
}

.site-header.is-scrolled .brand img {
  filter: none;
}

.site-header nav {
  display: flex;
  justify-content: center;
  gap: clamp(22px, 2.4vw, 46px);
}

.site-header nav a {
  position: relative;
  font-size: 12px;
  font-weight: 560;
}

.site-header nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms;
}

.site-header nav a:hover::after,
.site-header nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid #ffffff66;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  transition: background 200ms, color 200ms, border-color 200ms;
}

.site-header.is-scrolled .header-cta {
  border-color: var(--ink);
}

.header-cta:hover {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--navy);
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
}

@media (max-width: 1100px) {
  .site-header {
    grid-template-columns: 180px 1fr auto;
    padding-inline: 28px;
  }

  .site-header nav {
    gap: 20px;
  }

  .site-header nav a {
    font-size: 11px;
  }
}

@media (max-width: 860px) {
  .site-header {
    grid-template-columns: 1fr auto;
    min-height: 76px;
    padding: 14px 24px;
  }

  .brand {
    width: 136px;
  }

  .menu-toggle {
    position: relative;
    z-index: 3;
    display: grid;
    place-content: center;
    gap: 7px;
    width: 42px;
    height: 42px;
    padding: 0;
  }

  .menu-toggle span {
    display: block;
    width: 23px;
    height: 1px;
    background: currentColor;
  }

  .site-header nav {
    position: fixed;
    inset: 0;
    display: flex;
    visibility: hidden;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 28px;
    background: var(--navy);
    color: var(--white);
    opacity: 0;
    transform: translateY(-10px);
    transition: all 250ms;
  }

  .site-header nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .site-header nav a {
    font-size: 28px;
    font-weight: 430;
  }

  .header-cta {
    display: none;
  }
}

@media (max-width: 620px) {
  .site-header {
    padding-inline: 19px;
  }
}