@import url("site-fonts.css");

:root {
  --global-nav-accent: #3168ec;
  --global-nav-ink: #172033;
  --global-nav-muted: #65728a;
  --global-nav-line: #e2e8f2;
  --global-nav-surface: rgba(255, 255, 255, 0.98);
}

.global-site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 1000;
  width: 100%;
  border-bottom: 1px solid var(--global-nav-line);
  background: var(--global-nav-surface);
  color: var(--global-nav-ink);
  font-family: "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
}

.global-site-header-home {
  position: fixed;
  inset: 0 0 auto;
}

/* Secondary pages keep the shared navigation visible while the page scrolls. */
.global-site-header:not(.global-site-header-home) {
  position: fixed;
  inset: 0 0 auto;
}

.global-site-header:not(.global-site-header-home) + main {
  padding-top: 76px;
}

.global-nav-shell {
  position: relative;
  display: flex;
  align-items: center;
  width: min(1440px, calc(100% - 64px));
  min-height: 76px;
  margin: 0 auto;
  gap: 24px;
}

.global-nav-brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 11px;
  min-height: 48px;
  color: var(--global-nav-ink);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
}

.global-nav-brand img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.global-nav-panel {
  display: flex;
  flex: 1 1 auto;
  align-items: stretch;
  justify-content: flex-start;
  align-self: stretch;
  min-width: 0;
  gap: 4px;
}

.global-nav-item {
  position: relative;
  display: flex;
  align-items: stretch;
}

.global-nav-primary-row {
  display: flex;
  align-items: stretch;
}

.global-nav-link,
.global-nav-dropdown-toggle {
  color: #3f4b60;
}

.global-nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 9px 0 13px;
  font-size: 15px;
  font-weight: 560;
  line-height: 1;
  letter-spacing: 0;
  text-decoration: none;
  white-space: nowrap;
  transition: color 180ms ease;
}

.global-nav-link::after {
  content: "";
  position: absolute;
  inset: auto 12px 0;
  height: 2px;
  background: var(--global-nav-accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease-out;
}

.global-nav-item:hover .global-nav-link,
.global-nav-item:focus-within .global-nav-link,
.global-nav-item.is-open .global-nav-link,
.global-nav-link[aria-current="page"] {
  color: var(--global-nav-accent);
}

.global-nav-link[aria-current="page"]::after,
.global-nav-item:focus-within .global-nav-link::after,
.global-nav-item.is-open .global-nav-link::after {
  transform: scaleX(1);
}

.global-nav-dropdown-toggle {
  display: inline-grid;
  width: 30px;
  min-height: 44px;
  padding: 0;
  place-items: center;
  border: 0;
  background: transparent;
  cursor: pointer;
  touch-action: manipulation;
}

.global-nav-chevron {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform 180ms ease-out;
}

.global-nav-item.is-open .global-nav-chevron,
.global-nav-item:focus-within .global-nav-chevron {
  transform: translateY(2px) rotate(225deg);
}

.global-nav-dropdown {
  position: absolute;
  inset: calc(100% - 1px) auto auto 0;
  display: grid;
  width: 238px;
  padding: 8px;
  border: 1px solid var(--global-nav-line);
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 18px 44px rgba(30, 48, 78, 0.14);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 160ms ease-out, transform 180ms ease-out, visibility 0s;
}

.global-nav-item:hover .global-nav-dropdown,
.global-nav-item:focus-within .global-nav-dropdown,
.global-nav-item.is-open .global-nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.global-nav-dropdown a {
  display: grid;
  gap: 4px;
  min-height: 54px;
  padding: 10px 12px;
  border-radius: 4px;
  color: var(--global-nav-ink);
  text-decoration: none;
  transition: background-color 150ms ease, color 150ms ease;
}

.global-nav-dropdown a:hover,
.global-nav-dropdown a:focus-visible {
  background: #edf3ff;
  color: #2458d4;
}

.global-nav-dropdown strong {
  font-size: 14px;
  font-weight: 650;
  line-height: 1.25;
}

.global-nav-dropdown small {
  color: var(--global-nav-muted);
  font-size: 12px;
  line-height: 1.35;
}

.global-nav-contact {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 4px 0 14px;
  border-left: 1px solid var(--global-nav-line);
  color: var(--global-nav-ink);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms ease;
  margin-left: auto;
}

.global-nav-contact-arrow {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border: 1px solid #cfd8e8;
  border-radius: 50%;
  color: var(--global-nav-accent);
  font-size: 15px;
  font-weight: 500;
  transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease;
}

.global-nav-contact:hover,
.global-nav-contact:focus-visible {
  color: var(--global-nav-accent);
}

.global-nav-contact:hover .global-nav-contact-arrow,
.global-nav-contact:focus-visible .global-nav-contact-arrow {
  border-color: var(--global-nav-accent);
  background: var(--global-nav-accent);
  color: #fff;
}

.global-nav-menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  margin-left: auto;
  padding: 0;
  place-items: center;
  border: 1px solid var(--global-nav-line);
  border-radius: 6px;
  background: #fff;
  color: var(--global-nav-ink);
  cursor: pointer;
}

.global-nav-menu-icon {
  display: grid;
  width: 19px;
  gap: 4px;
}

.global-nav-menu-icon span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform 180ms ease, opacity 140ms ease;
}

.global-site-header.is-mobile-open .global-nav-menu-icon span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.global-site-header.is-mobile-open .global-nav-menu-icon span:nth-child(2) {
  opacity: 0;
}

.global-site-header.is-mobile-open .global-nav-menu-icon span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

.global-nav-link:focus-visible,
.global-nav-dropdown-toggle:focus-visible,
.global-nav-menu-toggle:focus-visible,
.global-nav-brand:focus-visible,
.global-nav-contact:focus-visible {
  outline: 3px solid rgba(49, 104, 236, 0.28);
  outline-offset: 2px;
}

@media (max-width: 1320px) {
  .global-nav-shell {
    gap: 14px;
  }

  .global-nav-link {
    padding-inline: 8px 6px;
    font-size: 14px;
  }

  .global-nav-dropdown-toggle {
    width: 25px;
  }
}

@media (max-width: 1080px) {
  .global-nav-shell {
    width: min(100% - 32px, 960px);
    min-height: 68px;
  }

  .global-site-header:not(.global-site-header-home) + main {
    padding-top: 68px;
  }

  .global-nav-brand span,
  .global-nav-menu-toggle {
    display: grid;
  }

  .global-nav-brand span {
    display: inline;
  }

  .global-nav-panel {
    position: absolute;
    inset: 100% 0 auto;
    display: none;
    max-height: calc(100vh - 84px);
    padding: 10px 16px 18px;
    overflow-y: auto;
    border: 1px solid var(--global-nav-line);
    border-top: 0;
    border-radius: 0 0 6px 6px;
    background: #fff;
    box-shadow: 0 24px 44px rgba(30, 48, 78, 0.14);
  }

  .global-site-header.is-mobile-open .global-nav-panel {
    display: block;
  }

  .global-nav-item {
    display: block;
    border-bottom: 1px solid #edf0f5;
  }

  .global-nav-primary-row {
    width: 100%;
  }

  .global-nav-link {
    flex: 1 1 auto;
    min-height: 52px;
    padding: 0 4px;
    font-size: 15px;
  }

  .global-nav-link::after {
    display: none;
  }

  .global-nav-dropdown-toggle {
    width: 52px;
    min-height: 52px;
  }

  .global-nav-dropdown {
    position: static;
    display: none;
    width: 100%;
    padding: 0 0 10px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
    transition: none;
  }

  .global-nav-item:hover .global-nav-dropdown,
  .global-nav-item:focus-within .global-nav-dropdown {
    display: none;
  }

  .global-nav-item.is-open .global-nav-dropdown,
  .global-nav-item.is-open:hover .global-nav-dropdown,
  .global-nav-item.is-open:focus-within .global-nav-dropdown {
    display: grid;
  }

  .global-nav-dropdown a {
    min-height: 50px;
    padding-inline: 14px;
    background: #f7f9fc;
  }

  .global-nav-contact {
    width: 100%;
    min-height: 48px;
    margin: 14px 0 0;
    padding: 0 14px;
    border: 1px solid var(--global-nav-line);
    border-radius: 6px;
  }

  .global-nav-contact-arrow {
    margin-left: auto;
  }
}

@media (max-width: 560px) {
  .global-nav-shell {
    width: calc(100% - 24px);
  }

  .global-nav-brand {
    max-width: calc(100% - 60px);
  }

  .global-nav-brand span {
    overflow: hidden;
    font-size: 13px;
    text-overflow: ellipsis;
  }
}

@media (prefers-reduced-motion: reduce) {
  .global-nav-link,
  .global-nav-link::after,
  .global-nav-chevron,
  .global-nav-dropdown,
  .global-nav-contact,
  .global-nav-menu-icon span {
    transition: none;
  }
}