/* Reserve scrollbar space so short and long pages have the same header origin. */
html {
  scrollbar-gutter: stable;
}

/* Shared header geometry: identical logo, content width and menu alignment. */
header.site-header,
header.site-header.nav--scrolled,
header.site-header.nav-open,
#navLoggedIn.site-header {
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 64px;
  z-index: 1000;
  border: 0;
  background: #fff;
  box-shadow: 0 1px 0 rgba(15, 23, 42, .08);
  backdrop-filter: none;
  box-sizing: border-box;
}

.site-header .site-header__inner,
#navLoggedIn .site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  max-width: 1440px;
  height: 64px;
  margin: 0 auto;
  padding: 0 32px;
  gap: 32px;
  box-sizing: border-box;
}

.site-header .site-header__brand,
#navLoggedIn .site-header__brand {
  display: flex;
  align-items: center;
  flex: 0 0 227px;
  width: 227px;
  height: 56px;
  margin: 0;
  padding: 0;
}

.site-header .site-header__logo,
#navLoggedIn .site-header__logo {
  position: static;
  display: block;
  flex-shrink: 0;
  width: 227px;
  height: 56px;
  margin: 0;
  padding: 0;
  border-radius: 0;
  object-fit: contain;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  filter: none;
}

@media (min-width: 961px) {
  /* Fixed slots prevent active bold text from shifting the following items. */
  .site-header .main-nav-link,
  #navLoggedIn .main-nav-link {
    width: 64px;
    flex-shrink: 0;
  }

  .site-header .site-header__items,
  #navLoggedIn .site-header__items {
    position: static;
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: flex-start;
    width: auto;
    height: 64px;
    margin: 0;
    padding: 0;
    gap: 32px;
    list-style: none;
    border: 0;
    box-sizing: border-box;
  }

  .site-header__items > li {
    display: flex;
    margin: 0;
    padding: 0;
  }

  .site-header .site-header__collapse,
  #navLoggedIn .site-header__collapse {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
    gap: 24px;
  }

  .site-header .navbar-right,
  #navLoggedIn .navbar-right {
    margin-left: auto;
  }
}

@media (min-width: 961px) and (max-width: 1200px) {
  .site-header .site-header__inner,
  #navLoggedIn .site-header__inner {
    padding: 0 24px;
    gap: 24px;
  }

  .site-header .site-header__brand,
  #navLoggedIn .site-header__brand {
    flex-basis: 180px;
    width: 180px;
    height: 44px;
  }

  .site-header .site-header__logo,
  #navLoggedIn .site-header__logo {
    width: 180px;
    height: 44px;
  }

  .site-header .site-header__items,
  #navLoggedIn .site-header__items {
    gap: 20px;
  }

  .site-header .site-header__collapse,
  #navLoggedIn .site-header__collapse {
    gap: 16px;
  }

  .site-header .navbar-right,
  #navLoggedIn .navbar-right {
    gap: 10px;
  }
}

/* Shared appearance for the five primary navigation items only. */
.nav__links .main-nav-link,
.nav-list .main-nav-link,
.navbar-middle .main-nav-link,
#navLoggedIn .main-nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  height: auto;
  padding: 8px 2px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: #000;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 14px;
  font-weight: 400;
  font-style: normal;
  line-height: 1.43;
  white-space: nowrap;
  text-decoration: none;
  box-sizing: border-box;
}

.nav__links .main-nav-link:hover,
.nav-list .main-nav-link:hover,
.navbar-middle .main-nav-link:hover,
#navLoggedIn .main-nav-link:hover {
  color: #000;
  background: transparent;
  text-decoration: none;
}

.main-nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: #000;
  opacity: 0;
  transform: translateX(-50%) scaleX(0);
  transition: transform 180ms ease, opacity 180ms ease;
  pointer-events: none;
}

.nav__links .main-nav-link[aria-current="page"],
.nav-list .main-nav-link[aria-current="page"],
.navbar-middle .main-nav-link[aria-current="page"],
#navLoggedIn .main-nav-link[aria-current="page"] {
  color: #000;
  font-weight: 600;
}

.main-nav-link[aria-current="page"]::after,
.main-nav-link:hover::after,
.main-nav-link:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) scaleX(1);
}

.main-nav-link:focus-visible {
  outline: 2px solid #94a3b8;
  outline-offset: 4px;
}

@media (max-width: 960px) {
  .site-header .site-header__inner,
  #navLoggedIn .site-header__inner {
    padding: 0 12px;
    gap: 12px;
  }

  .site-header .site-header__brand,
  #navLoggedIn .site-header__brand {
    flex-basis: 156px;
    width: 156px;
    height: 44px;
  }

  .site-header .site-header__logo,
  #navLoggedIn .site-header__logo {
    width: 156px;
    height: 44px;
  }

  .site-header .nav-toggle,
  .site-header .navbar-toggle {
    margin-left: auto;
  }

  .nav__links .main-nav-link,
  .nav-list .main-nav-link,
  #navGuest .nav__links .main-nav-link {
    justify-content: flex-start;
    min-height: 44px;
    padding: 10px 12px;
  }

  .navbar-middle .main-nav-link,
  #navLoggedIn .main-nav-link {
    justify-content: flex-start;
    min-height: 24px;
    padding: 0;
  }

  .main-nav-link::after {
    left: 12px;
  }

  .navbar-middle .main-nav-link::after {
    left: 0;
  }

  .main-nav-link::after {
    transform: scaleX(0);
    transform-origin: left;
  }

  .main-nav-link[aria-current="page"]::after,
  .main-nav-link:hover::after,
  .main-nav-link:focus-visible::after {
    transform: scaleX(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .main-nav-link::after {
    transition: none;
  }
}