/* 准星站顶部主站导航 */
:root { --site-nav-height: 70px; }
.site-main-nav {
  position: sticky;
  top: 0;
  z-index: 90;
  min-height: var(--site-nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 clamp(16px, 3vw, 40px);
  background: rgba(14, 19, 30, .95);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  box-shadow: 0 2px 10px rgba(0, 0, 0, .35);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.site-main-brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  text-decoration: none;
}
.site-main-brand img { width: 36px; height: 36px; flex: none; object-fit: contain; }
.site-main-brand span {
  overflow: hidden;
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.site-main-links { display: flex; align-items: center; gap: 16px; flex: none; }
.site-main-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 6px;
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.1;
  text-decoration: none;
  letter-spacing: .2px;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.site-main-link::after {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: 5px;
  height: 2.5px;
  border-radius: 999px;
  background: #ff3a3a;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .28s cubic-bezier(.22, .61, .36, 1);
}
.site-main-link:hover::after,
.site-main-link:focus-visible::after,
.site-main-link.is-active::after { transform: scaleX(1); }
.site-main-link:focus-visible { outline: 2px solid rgba(255, 122, 122, .9); outline-offset: 3px; border-radius: 4px; }
.page-gallery .sidebar { top: var(--site-nav-height); }
.page-builder .builder-topbar { top: var(--site-nav-height); }
@media (min-width: 901px) {
  .page-builder .builder-preview { top: calc(var(--site-nav-height) + 96px); }
}
@media (max-width: 680px) {
  :root { --site-nav-height: 62px; }
  .site-main-nav { gap: 8px; padding: 0 12px; }
  .site-main-brand { gap: 8px; }
  .site-main-brand img { width: 32px; height: 32px; }
  .site-main-brand span { font-size: 14px; }
  .site-main-links { gap: 4px; }
  .site-main-link { min-height: 44px; padding: 10px 6px; font-size: 14px; }
  .site-main-link::after { left: 6px; right: 6px; bottom: 5px; }
}
@media (max-width: 480px) {
  .site-main-brand span { display: none; }
  .site-main-links { gap: 2px; }
  .site-main-link { padding: 10px 5px; font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) {
  .site-main-link::after { transition-duration: .01ms !important; }
}