.site-header { background: var(--color-bg); border-bottom: 1px solid var(--color-line); position: relative; z-index: 20; }
.header-inner { display: flex; min-height: 80px; align-items: center; gap: 2.5rem; }
.brand, .footer-brand { font-size: 1.25rem; font-weight: 700; letter-spacing: -.045em; text-decoration: none; white-space: nowrap; }
.brand { margin-right: auto; }
.desktop-nav { display: flex; align-items: center; gap: 1.65rem; align-self: stretch; }
.desktop-nav a { font-size: .875rem; font-weight: 550; text-decoration: none; display: flex; align-items: center; position: relative; color: var(--color-muted); }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--color-text); }
.desktop-nav a.active::after { content: ""; position: absolute; height: 2px; bottom: 0; inset-inline: 0; background: var(--color-accent); }
.header-actions { display: flex; align-items: center; gap: .35rem; padding-left: 1.25rem; border-left: 1px solid var(--color-line); }
.icon-button { width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; background: transparent; color: var(--color-muted); border: 0; border-radius: 6px; }
.icon-button:hover { background: var(--color-surface-alt); color: var(--color-text); }
.mobile-menu { display: none; }
.site-footer { border-top: 1px solid var(--color-line); margin-top: 1.5rem; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding-block: 2.5rem; }
.footer-brand { font-size: 1rem; }
.copyright { margin-top: .35rem; color: var(--color-muted); font-size: .8rem; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 1.75rem; font-size: .8rem; }
.site-footer nav a { display: inline-flex; align-items: center; gap: .3rem; text-decoration: none; }
.site-footer .icon { width: 14px; height: 14px; }
.page-heading { padding-block: 4.5rem 2.75rem; }
.page-heading > .eyebrow { margin-bottom: .75rem; }
.page-heading h1 { margin-bottom: 1.25rem; }
.page-heading .status-badge { margin-top: 1.25rem; }
.back-link { display: inline-block; color: var(--color-muted); font-size: .825rem; text-decoration: none; margin-bottom: 2rem; }
.section-nav { display: flex; flex-wrap: wrap; gap: .5rem 2rem; border-block: 1px solid var(--color-line); padding-block: 1rem; }
.section-nav a { min-height: 32px; display: inline-flex; align-items: center; gap: .7rem; color: var(--color-muted); font-size: .875rem; text-decoration: none; }
.section-nav a:hover { color: var(--color-accent); }
.section-nav a span { font-size: .75rem; padding: .1rem .45rem; border-radius: 4px; background: var(--color-surface-alt); color: var(--color-text); }
.split-section { display: grid; grid-template-columns: .85fr 1.3fr; gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.split-section > * { min-width: 0; }
.split-section .eyebrow { margin-bottom: .65rem; }
.split-section h2 { margin-bottom: 1.25rem; }
.split-section p { color: var(--color-muted); }
.split-section .text-link { margin-top: 1.5rem; }
@media (max-width: 70rem) {
  .header-inner { gap: 1.5rem; }
  .desktop-nav { gap: 1.1rem; }
  .header-actions { padding-left: .75rem; }
}
@media (max-width: 60rem) {
  .desktop-nav { display: none; }
  .header-inner { min-height: 72px; }
  .header-actions { border: 0; padding: 0; }
  .mobile-menu { display: block; }
  .mobile-menu summary { list-style: none; cursor: pointer; min-height: 40px; padding: .5rem .65rem; display: flex; align-items: center; gap: .4rem; font-size: .825rem; border-radius: 6px; }
  .mobile-menu summary::-webkit-details-marker { display: none; }
  .mobile-menu[open] summary { background: var(--color-surface-alt); }
  .mobile-menu nav { position: absolute; left: var(--gutter); right: var(--gutter); top: calc(100% - 1px); display: flex; flex-direction: column; padding: .75rem; background: var(--color-surface); border: 1px solid var(--color-line); border-radius: 0 0 var(--radius) var(--radius); box-shadow: var(--shadow-panel); }
  .mobile-menu nav a { padding: .8rem 1rem; font-size: .9rem; text-decoration: none; border-radius: 5px; }
  .mobile-menu nav a.active { background: var(--color-accent-soft); color: var(--color-accent); }
  .mobile-menu nav a:hover { background: var(--color-surface-alt); }
  .split-section { grid-template-columns: 1fr; gap: 2rem; }
  .split-section > div:first-child { max-width: var(--reading-width); }
}
@media (max-width: 40rem) {
  .header-inner { gap: .5rem; min-height: 66px; }
  .brand { font-size: 1.1rem; }
  .github-button { display: none; }
  .header-actions { gap: .15rem; }
  .mobile-menu summary span { display: none; }
  .mobile-menu summary { width: 40px; justify-content: center; padding: .5rem; }
  .footer-inner { flex-direction: column; align-items: start; gap: 1.5rem; }
  .site-footer nav { gap: 1rem; }
  .page-heading { padding-block: 3rem 2rem; }
  .section-nav { column-gap: 1.25rem; }
}


/* Compact language control; native details remains usable without JavaScript. */
.language-switcher { position: relative; }
.language-switcher summary { display: flex; align-items: center; justify-content: center; gap: .3rem; min-height: 40px; padding: .4rem .5rem; border-radius: 6px; list-style: none; font-size: .75rem; font-weight: 600; cursor: pointer; }
.language-switcher summary::-webkit-details-marker { display: none; }
.language-switcher[open] summary, .language-switcher summary:hover { background: var(--color-surface-alt); }
.language-chevron { font-size: .85rem; line-height: 1; }
.language-switcher nav { position: absolute; right: 0; top: calc(100% + .5rem); min-width: 192px; max-width: calc(100vw - 2 * var(--gutter)); max-height: min(26rem, calc(100dvh - 100px)); overflow-y: auto; overscroll-behavior: contain; z-index: 1; padding: .4rem; background: var(--color-surface); border: 1px solid var(--color-line); border-radius: 8px; box-shadow: var(--shadow-panel); }
.language-switcher nav a { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 44px; padding: .5rem .7rem; border-radius: 4px; font-size: .85rem; text-decoration: none; font-family: var(--font-sans); }
.language-name { display: inline-flex; align-items: center; gap: .6rem; white-space: nowrap; }
.language-flag { flex: 0 0 20px; width: 20px; height: 14px; object-fit: cover; border-radius: 2px; outline: 1px solid #8795ac40; }
.language-badge { flex: 0 0 20px; width: 20px; height: 18px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--color-line); border-radius: 3px; color: var(--color-muted); font: 600 12px/1 var(--font-sans); }
.language-switcher nav a[aria-current] { font-weight: 600; background: var(--color-accent-soft); color: var(--color-accent); }
.language-switcher nav a:hover { background: var(--color-surface-alt); }
@media (max-width: 60rem) {
  .language-switcher { position: static; }
  .language-switcher nav { right: var(--gutter); top: calc(100% - 1px); }
}
@media (max-width: 23rem) {
  .header-inner { gap: .25rem; }
  .header-actions { gap: 0; }
  .language-switcher summary { padding-inline: .3rem; }
}