.site-header {
  position: sticky;
  inset: auto;
  top: 0;
  z-index: 100;
  height: 64px;
  background-color: transparent;
}

.site-header:not(.light) {
  margin-bottom: -64px;
}

.nav-surface {
  width: 100%;
  min-height: 64px;
  background: transparent;
  border-bottom: 1px solid transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition: background-color .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.site-header.is-scrolled .nav-surface,
.site-header.menu-open .nav-surface {
  background: rgba(3, 20, 37, .72);
  border-bottom-color: rgba(255, 255, 255, .03);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.site-header.light {
  position: sticky;
  top: 0;
}

.site-header.light .nav-surface,
.site-header.light.is-scrolled .nav-surface,
.site-header.light.menu-open .nav-surface {
  background: rgba(255, 255, 255, .95);
  border-bottom-color: rgba(7, 23, 43, .06);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.site-header.menu-open .nav-surface {
  box-shadow: 0 14px 30px rgba(2, 16, 30, .16);
}

.site-header.light.menu-open .nav-surface {
  box-shadow: 0 14px 30px rgba(17, 36, 56, .09);
}

.nav {
  position: relative;
  height: 64px;
}

.header-cta {
  border: 0;
  background: rgba(255, 255, 255, .06);
  transition: background-color .16s ease, transform .16s ease;
}

.header-cta:hover {
  background: rgba(255, 255, 255, .10);
}

.header-cta-outline {
  border: 1px solid rgba(255, 255, 255, .07);
  background: transparent;
  transition: background-color .16s ease, border-color .16s ease, transform .16s ease;
}

.header-cta-outline:hover {
  background: rgba(255, 255, 255, .05);
  border-color: rgba(255, 255, 255, .22);
}

.site-header.light .header-cta {
  border: 0;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #fff;
  cursor: pointer;
  transition: background-color .16s ease;
}

.nav-toggle:hover,
.nav-toggle[aria-expanded="true"] {
  background: rgba(255, 255, 255, .06);
}

.site-header.light .nav-toggle {
  border: 0;
  background: transparent;
  color: var(--ink);
}

.site-header.light .nav-toggle:hover,
.site-header.light .nav-toggle[aria-expanded="true"] {
  background: var(--paper-soft);
}

.header-cta:focus-visible,
.nav-toggle:focus-visible {
  outline: 2px solid rgba(255, 255, 255, .55);
  outline-offset: 2px;
}

.site-header.light .header-cta:focus-visible,
.site-header.light .nav-toggle:focus-visible {
  outline-color: rgba(7, 23, 43, .35);
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .16s ease, opacity .16s ease, background .16s ease;
}

.nav-toggle-icon {
  position: relative;
  display: block;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-icon::before { top: -6px; }
.nav-toggle-icon::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-menu {
  display: none;
}

[id] {
  scroll-margin-top: 96px;
}

@media (max-width: 900px) {
  .nav {
    gap: 10px;
  }

  .header-cta {
    min-height: 44px;
    border-radius: 8px;
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .mobile-menu:not([hidden]) {
    display: grid;
  }

  .mobile-menu {
    position: static;
    width: 100%;
    padding: 8px 10px 10px;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .mobile-menu a {
    display: block;
    padding: 14px 10px;
    border-radius: 4px;
    color: rgba(255, 255, 255, .84);
    text-align: left;
    text-decoration: none;
    font-size: 15px;
    font-weight: 620;
  }

  .site-header.light .mobile-menu a {
    color: var(--muted);
  }

  .mobile-menu a:hover,
  .mobile-menu a:focus-visible {
    color: #fff;
    background: rgba(255, 255, 255, .06);
    outline: none;
  }

  .mobile-menu a[aria-current="page"] {
    color: var(--green);
    background: transparent;
    font-weight: 700;
  }

  .site-header.light .mobile-menu a:hover,
  .site-header.light .mobile-menu a:focus-visible {
    color: var(--ink);
    background: var(--paper-soft);
  }

  .site-header.light .mobile-menu a[aria-current="page"] {
    color: var(--green-dark);
    background: transparent;
  }
}

@media (max-width: 640px) {
  .nav {
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-surface,
  .header-cta,
  .nav-toggle,
  .nav-toggle-icon,
  .nav-toggle-icon::before,
  .nav-toggle-icon::after {
    transition: none;
  }
}