/* 首屏关键样式：避免导航/菜单在完整 CSS 加载前闪动 */
#nav-menu-fab,
.site-menu-toggle,
.nav-menu-fab {
  opacity: 0;
  position: fixed;
  top: 12px;
  right: auto;
  left: calc(100vw - 56px);
  z-index: 2147483646;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #67e8f9;
  background: rgba(5, 8, 16, 0.95);
  border: 1px solid rgba(103, 232, 249, 0.5);
  border-radius: 8px;
  margin: 0;
  padding: 0;
  cursor: pointer;
}
html.nav-ui-ready #nav-menu-fab,
html.nav-ui-ready .site-menu-toggle,
html.nav-ui-ready .nav-menu-fab {
  opacity: 1;
}
.site-menu-toggle__bars {
  width: 1.35rem;
  height: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
}
.site-menu-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: #67e8f9;
  border-radius: 1px;
}

.mobile-menu {
  position: fixed !important;
  inset: 0 !important;
  z-index: 2147483645 !important;
  transform: translateX(100%) !important;
  visibility: hidden !important;
  pointer-events: none !important;
  background: rgba(5, 8, 16, 0.96);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.mobile-menu.open {
  transform: translateX(0) !important;
  visibility: visible !important;
  pointer-events: auto !important;
}
.mobile-menu.mobile-menu--no-transition {
  transition: none !important;
}
.mobile-menu__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.75rem;
  width: 100%;
  max-width: 22rem;
  margin: 0 auto;
  text-align: center;
}
.mobile-menu .nav-link::after {
  display: none !important;
}
.mobile-menu .nav-link {
  text-align: center;
  font-size: 1.35rem;
}
.mobile-menu .nav-link.active,
.mobile-menu .nav-link:hover {
  color: #67e8f9;
}
.mobile-menu .site-logo-link {
  display: inline-flex;
  justify-content: center;
  margin-bottom: 0 !important;
}
body.menu-open #nav-menu-fab {
  opacity: 0 !important;
  pointer-events: none !important;
}

@media (max-width: 1279px) {
  .site-logo--nav {
    height: 2.75rem !important;
    max-width: min(12.5rem, 68vw) !important;
  }
  .site-logo-link {
    max-width: 70vw;
  }
}

@media (min-width: 1280px) {
  #nav-menu-fab,
  .site-menu-toggle,
  .nav-menu-fab {
    display: none !important;
  }
}