:root {
  --site-nav-height: 76px;
  --site-nav-max: 1180px;
  --nav-h: var(--site-nav-height);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  width: 100%;
  height: var(--site-nav-height);
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: background 0.24s ease, border-color 0.24s ease, backdrop-filter 0.24s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(7, 10, 18, 0.82);
  backdrop-filter: blur(18px);
}

.site-header .nav {
  position: relative;
  width: min(calc(100% - 32px), var(--site-nav-max));
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 0 auto;
}

.site-header .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.2;
  white-space: nowrap;
}

.site-header .brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  box-shadow: 0 14px 34px rgba(55, 228, 176, 0.22);
}

.site-header .brand-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.site-header .nav-links {
  display: none;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
}

.site-header .nav-links a {
  position: relative;
  padding: 0;
  transition: color 0.18s ease;
}

.site-header .nav-links a::after {
  content: "";
  position: absolute;
  inset: auto 0 -8px;
  height: 2px;
  background: var(--accent-2);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.site-header .nav-links a:hover,
.site-header .nav-links a:focus-visible,
.site-header .nav-links a[aria-current="page"],
.site-header .nav-links a[aria-current="location"] {
  color: var(--text);
}

.site-header .nav-links a:hover::after,
.site-header .nav-links a:focus-visible::after,
.site-header .nav-links a[aria-current="page"]::after,
.site-header .nav-links a[aria-current="location"]::after {
  transform: scaleX(1);
}

.site-header .mobile-nav-toggle {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
}

.site-header .mobile-nav-toggle:hover,
.site-header .mobile-nav-toggle:focus-visible {
  transform: none;
}

@media (min-width: 900px) {
  .site-header .nav-links {
    display: flex;
  }

  .site-header .mobile-nav-toggle {
    display: none;
  }
}

@media (max-width: 899px) {
  :root {
    --site-nav-height: 68px;
  }

  .site-header .nav {
    width: min(calc(100% - 24px), var(--site-nav-max));
  }

  .site-header .nav-links.is-open {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(7, 10, 18, 0.98);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(18px);
  }

  .site-header .nav-links.is-open a {
    padding: 11px 12px;
    border-bottom: 1px solid var(--line);
  }

  .site-header .nav-links.is-open a:last-child {
    border-bottom: 0;
  }

  .site-header .nav-links.is-open a::after {
    display: none;
  }

  .site-header .brand span:not(.brand-mark) {
    display: inline;
  }
}