.site-header-inner { gap: 42px; }
.site-tools { display: flex; align-items: center; gap: 20px; margin-left: auto; }
.site-tools .site-about { margin: 0; padding: 10px 0; }
.language-control { display: inline-flex; align-items: center; }
.language-control select { font: inherit; font-size: 12px; color: var(--muted); background: var(--bg); border: 1px solid var(--line); border-radius: 6px; min-height: 34px; max-width: 112px; padding: 6px 26px 6px 10px; cursor: pointer; }
.language-control select:hover { color: var(--ink); border-color: var(--border-strong); }
.dialog-tools { position: sticky; top: -1px; z-index: 6; display: flex; align-items: center; justify-content: flex-end; gap: 14px; min-height: 34px; margin: 0 0 18px; background: var(--surface); }
.dialog-tools .dialog-close { position: static; float: none; margin: 0; padding: 0; width: 32px; height: 32px; flex: none; border: 0; border-radius: 50%; background: var(--surface-soft); }
.dialog-language-control { position: static; }
.dialog-language-control select { background: var(--surface); }
.coin-dialog .dialog-tools { padding: 16px 20px 0; }
#dialog-content { padding-top: 0; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
html[lang="en"] .course-meta { min-width: 112px; }
html[lang="en"] .asset-filters { gap: 20px; }
html[lang="en"] .article-meta { line-height: 1.8; }
@media (max-width: 680px) {
  .site-header-inner { height: auto; min-height: 68px; gap: 12px 20px; flex-wrap: wrap; padding-top: 14px; padding-bottom: 0; }
  .site-header #navigation { order: 3; width: 100%; min-height: 42px; gap: 28px; }
  .site-tools { gap: 16px; }
  .site-header .brand { font-size: 16px; }
  .language-control select { max-width: 102px; }
  html[lang="en"] .course-meta { min-width: 0; }
  html[lang="en"] .asset-filters { gap: 22px; }
}