/* Equal language-independent header slots and navigation hit areas. */
.wordmark > span {
  font-family: Georgia, "Times New Roman", "Songti SC", SimSun, serif;
  font-size: 1em;
  font-weight: inherit;
  letter-spacing: 0;
  margin-left: 12px;
  line-height: inherit;
}
.site-header {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr) 260px;
  gap: 16px;
}
.site-header > .logo {
  min-width: 0;
  align-self: stretch;
  cursor: pointer;
}
.site-header nav, html[lang="zh-Hans"] .site-header nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
}
.site-header nav a {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
  height: 56px;
  padding: 8px;
  line-height: 1.3;
}
.site-header .header-actions { justify-content: flex-end; gap: 12px; }
.locale-selector { display: flex; align-items: center; gap: 16px; font-size: 16px; white-space: nowrap; }
.locale-dropdown { position: relative; }
.locale-dropdown summary { display: flex; align-items: center; gap: 12px; cursor: pointer; list-style: none; min-height: 44px; }
.locale-dropdown summary::-webkit-details-marker { display: none; }
.language-dropdown summary { min-width: 36px; justify-content: center; }
.locale-divider { width: 1px; height: 26px; background: var(--ink); opacity: .55; }
.region-dropdown summary { min-width: 146px; justify-content: space-between; }
[data-current-region], .locale-options button { display: flex; align-items: center; gap: 10px; }
.region-flag { width: 27px; height: 18px; flex-shrink: 0; box-shadow: 0 0 0 1px #35223d12; }
.locale-chevron { width: 0; height: 0; border-inline: 5px solid transparent; border-top: 6px solid currentColor; transition: transform .18s; }
.locale-dropdown[open] .locale-chevron { transform: rotate(180deg); }
.locale-options { position: absolute; top: calc(100% + 8px); right: 0; min-width: 190px; padding: 8px; background: var(--paper); border: 1px solid var(--line); border-radius: 4px; box-shadow: 0 8px 24px #35223d12; }
.locale-options button, .site-header .locale-options .language { display: flex; width: 100%; min-height: 44px; padding: 8px 12px; border: 0; background: none; color: inherit; font: inherit; text-align: left; }
.locale-options button:hover, .locale-options a:hover, .locale-options [aria-pressed="true"], .locale-options [aria-current] { background: #f0ebf2; }
@media (max-width: 1300px) {
  .site-header { grid-template-columns: minmax(0, 1fr) 280px; padding-inline: 30px; }
  .site-header nav, html[lang="zh-Hans"] .site-header nav { display: none; position: absolute; top: 100%; left: 0; right: 0; padding: 16px 24px; background: var(--paper); border-bottom: 1px solid var(--line); }
  .site-header nav.open, html[lang="zh-Hans"] .site-header nav.open { display: grid; grid-template-columns: 1fr; gap: 0; }
  .site-header nav a { height: 56px; justify-content: flex-start; text-align: left; }
  .site-header .menu-toggle { display: block; }
}
@media (max-width: 700px) {
  .site-header { height: 128px; padding: 10px 16px; grid-template-columns: minmax(0, 1fr) 40px; grid-template-rows: 56px 44px; gap: 4px; }
  .site-header > .logo { grid-column: 1 / -1; }
  .site-header .header-actions { grid-column: 1 / -1; justify-content: space-between; }
  .wordmark { font-size: 28px; }
  .wordmark > span { font-size: 1em; margin-left: 8px; }
  .site-header .logo { gap: 6px; }
  .site-header .brand-mark { width: 24px; }
  .language-dropdown .locale-options { right: auto; left: 0; }
  .hero { height: calc(100svh - 162px); }
  html { scroll-padding-top: 138px; }
}
@media (max-width: 360px) {
  .wordmark { font-size: 24px; }
  .wordmark > span { margin-left: 6px; }
}