/**
 * 顶栏冷启动关键样式：在 zh-site-nav / agent-dropdown 异步到达前生效。
 * 1) 避免主导航整块展开再收起
 * 2) 避免顶栏字色/底色先继承正文再跳到壳样式（刷新变色）
 * 与 preview-layout-plugin ensureChromeCriticalCss 内联规则保持一致。
 */

/* —— 结构：默认收起主导航；宽屏横排 —— */
.header .header-content .nav:not(.open),
.header .header-content #mainNav.nav:not(.open),
.header .header-content nav#mainNav:not(.open) {
  display: none;
}

@media (min-width: 1300px) {
  .header .header-content .nav,
  .header .header-content .nav:not(.open),
  .header .header-content #mainNav.nav,
  .header .header-content #mainNav.nav:not(.open),
  .header .header-content nav#mainNav,
  .header .header-content nav#mainNav:not(.open) {
    display: flex !important;
    flex-direction: row;
    position: static;
    gap: 0;
    max-height: none;
    overflow: visible;
    padding: 0;
    background: transparent;
    border: 0;
  }
}

/* mega 默认隐藏；无 transition，避免样式到达时淡出闪一下 */
.ciip-agent-nav-wrap .mega-dropdown,
.header-actions .ciip-foreign-nav-wrap .mega-dropdown,
.header-actions .ciip-lang-nav-wrap .mega-dropdown,
.header .mega-dropdown {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: none;
}

/* —— 配色：与最终壳一致，不继承浅色正文 body color —— */
#header.header,
header.header#header,
body.with-preview-site-nav > #header.header,
body.with-preview-site-nav > header.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10050;
  height: 64px;
  box-sizing: border-box;
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(14, 165, 233, 0.1);
  color: #f8fafc;
}

.header .header-content {
  max-width: 1720px;
  margin: 0 auto;
  padding: 0 1.5rem 0 0.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 10px;
  min-width: 0;
  box-sizing: border-box;
}

.header .logo {
  color: #fff;
  text-decoration: none;
}

.header .header-content .nav .ciip-agent-nav-wrap a.nav-agent-trigger,
.header .header-content .nav a.nav-agent-trigger,
.header .header-content .nav > a.ciip-nav-primary,
.header .header-content .nav .nav-item {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: none;
}

.header .header-content .nav .ciip-agent-nav-wrap a.nav-agent-trigger.active,
.header .header-content .nav a.nav-agent-trigger.active,
.header .header-content .nav > a.ciip-nav-primary.active,
.header .header-content .nav .nav-item.active {
  color: #fff;
}

.header .header-actions .ciip-foreign-trigger,
.header .header-actions .ciip-lang-trigger,
.header .header-actions .lang-toggle,
.header .header-phone,
.header .ciip-mobile-trigger,
.header .ciip-mobile-label {
  color: #cbd5e1;
}

.header .mobile-toggle span {
  background: #e2e8f0;
}