/* 一级导航悬停展开二级菜单（V1 / V2 / V3 共用） */

.dnaweb-nav-item {
  position: relative;
  display: flex;
  align-items: stretch;
  flex-shrink: 0;
}

.dnaweb-nav-item__trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
}

.dnaweb-nav-item__trigger::after {
  content: '';
  width: 0;
  height: 0;
  margin-left: 0.1rem;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: 0.55;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.dnaweb-nav-item:hover .dnaweb-nav-item__trigger::after,
.dnaweb-nav-item:focus-within .dnaweb-nav-item__trigger::after {
  transform: rotate(180deg);
  opacity: 0.9;
}

.dnaweb-nav-dropdown {
  position: absolute;
  top: calc(100% + 2px);
  left: 50%;
  z-index: 120;
  min-width: 10.5rem;
  padding: 0.35rem;
  margin: 0;
  border-radius: 0.5rem;
  background: #ffffff;
  border: 1px solid rgba(0, 94, 164, 0.14);
  box-shadow:
    0 12px 28px rgba(17, 29, 35, 0.14),
    0 0 0 1px rgba(255, 255, 255, 0.6) inset;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-50%) translateY(6px);
  transition:
    opacity 0.22s ease,
    transform 0.22s ease,
    visibility 0.22s ease;
}

.dnaweb-nav-item:hover .dnaweb-nav-dropdown,
.dnaweb-nav-item:focus-within .dnaweb-nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dnaweb-nav-dropdown__link {
  display: block;
  padding: 0.45rem 0.65rem;
  border-radius: 0.35rem;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.35;
  color: #111d23;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background 0.15s ease,
    color 0.15s ease;
}

.dnaweb-nav-dropdown__link:hover {
  background: #e9f6fd;
  color: #005ea4;
}

/* —— V1 顶栏导航（横条内 h-full） —— */
nav[data-active-classes] .dnaweb-nav-item {
  height: 100%;
}

nav[data-active-classes] .dnaweb-nav-item__trigger {
  height: 100%;
}

header nav[data-active-classes],
header .h-\[56px\] {
  overflow: visible;
}

/* —— V2 固定顶栏 —— */
#v2-site-nav nav .dnaweb-nav-item {
  align-items: center;
}

#v2-site-nav .dnaweb-nav-dropdown {
  background: linear-gradient(
    165deg,
    rgba(56, 163, 232, 0.97),
    rgba(14, 130, 218, 0.96) 55%,
    rgba(0, 119, 230, 0.95)
  );
  border-color: rgba(212, 175, 55, 0.42);
  box-shadow:
    0 12px 28px rgba(10, 62, 120, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.12) inset;
  backdrop-filter: blur(12px);
}

#v2-site-nav .dnaweb-nav-dropdown__link {
  color: rgba(255, 255, 255, 0.96);
}

#v2-site-nav .dnaweb-nav-dropdown__link:hover {
  background: rgba(255, 255, 255, 0.18);
  color: #fff7d6;
}

/* —— V3 顶栏 —— */
@media (min-width: 1280px) {
  #v3-site-nav,
  #v3-site-nav .v3-nav-bar,
  #v3-site-nav .v3-nav-pill {
    overflow: visible;
  }
}

#v3-site-nav .dnaweb-nav-item {
  align-items: center;
}

#v3-site-nav.v3-nav--hero .dnaweb-nav-dropdown {
  background: rgba(8, 38, 82, 0.96);
  border-color: rgba(147, 197, 253, 0.25);
  backdrop-filter: blur(10px);
}

#v3-site-nav.v3-nav--hero .dnaweb-nav-dropdown__link {
  color: rgba(255, 255, 255, 0.94);
}

#v3-site-nav.v3-nav--hero .dnaweb-nav-dropdown__link:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #ffe088;
}

#v3-site-nav.v3-nav--site .dnaweb-nav-dropdown {
  background: #ffffff;
  border-color: rgba(0, 94, 164, 0.16);
}

@media (prefers-reduced-motion: reduce) {
  .dnaweb-nav-dropdown,
  .dnaweb-nav-item__trigger::after {
    transition: none;
  }
}