.site-language { display: inline-flex; flex: 0 0 auto; gap: 3px; padding: 3px; border: 1px solid #b9c9c0; border-radius: 7px; align-items: center; }
/* Media language is independent of translated link text. Hide mismatches before JS loads too. */
[data-short-language][hidden], html[lang="en"] [data-short-language="zh"], html[lang="zh-Hans"] [data-short-language="en"] { display: none !important; }
.knowledge-videos { grid-template-columns: minmax(0,1fr); }
.knowledge-videos > .knowledge-video { width: 100%; max-width: 760px; }
.site-language[hidden] { display: none; }
.site-language button { min-height: 38px; padding: 7px 11px; border: 0; border-radius: 4px; background: transparent; color: #245e54; font: 600 .8rem 'Segoe UI',system-ui,sans-serif; cursor: pointer; }
.site-language button[aria-pressed="true"] { color: #fffefa; background: #245e54; }
.site-language button:focus-visible { outline: 3px solid #b78b4b; outline-offset: 3px; }
.site-header .nav { gap: 14px; }
.site-header .nav-links { gap: 16px; }
.acro-translation { display: none; }
.form-language-help { display: none; }
html[lang="zh-Hans"] .form-language-help { display: block; font-size: .8rem; line-height: 1.8; }
html[lang="zh-Hans"] body { font-family: 'Microsoft YaHei','PingFang SC','Noto Sans SC',system-ui,sans-serif; }
html[lang="zh-Hans"] h1, html[lang="zh-Hans"] h2, html[lang="zh-Hans"] h3 { letter-spacing: 0; line-height: 1.4; font-family: 'Noto Serif SC','Songti SC',SimSun,serif; }
html[lang="zh-Hans"] .hero h1 { font-size: clamp(2.4rem,4.5vw,4rem); }
html[lang="zh-Hans"] .hero h1 em { display: block; font-style: normal; }
html[lang="zh-Hans"] .eyebrow, html[lang="zh-Hans"] .section-kicker, html[lang="zh-Hans"] .resource-label { letter-spacing: .08em; }
html[lang="zh-Hans"] .acro-translation { display: block; margin: 12px 0 0; color: var(--teal,#245e54); font-weight: 600; font-size: 1.08rem; }
html[lang="zh-Hans"] .letter-title { font-family: Georgia,serif; line-height: 1.24; letter-spacing: -.025em; }
.external-language-note { font-size: .8rem !important; line-height: 1.7; }
@media (min-width: 961px) and (max-width: 1190px) { .site-header .header-cta { display: none; } .site-header .nav-links { margin-left: auto; } }
@media (max-width: 960px) {
  .site-header .site-language { margin-left: auto; }
  .site-header .nav-toggle { margin-left: 0; }
  .site-header .nav-links { gap: 8px 20px; }
}
@media (max-width: 580px) {
  .site-header .nav { flex-wrap: wrap; padding: 10px 0; gap: 8px; }
  .site-header .brand { margin-right: auto; }
  .site-header .site-language { margin-left: 0; order: 3; }
  .site-header .nav-toggle { order: 2; }
  .site-header .nav-links { order: 4; }
  .site-header .header-cta { display: none; }
  html { scroll-padding-top: 145px; }
  .video-page .nav { flex-wrap: wrap; padding: 12px 0; gap: 10px; }
  .video-page .nav .brand { width: 100%; }
}