/* shadcn/ui Blue + Zinc theme, from shadcn-ui/ui apps/v4/registry/themes.ts.
   Scoped for Jekyll navigation; original semantic OKLCH tokens are preserved. */
body.navigation-page.subpage-shell {
  background: oklch(1 0 0);
}
.navigation-page.subpage-shell #main.wide-shell__main {
  max-width: 1290px;
  padding: 1.7rem clamp(1rem, 3.3vw, 2.25rem) 4.5rem;
}
.navigation-page .page__content .site-directory {
  --nav-background: oklch(1 0 0);
  --nav-foreground: oklch(0.141 0.005 285.823);
  --nav-card: oklch(1 0 0);
  --nav-primary: oklch(0.488 0.243 264.376);
  --nav-primary-foreground: oklch(0.97 0.014 254.604);
  --nav-secondary: oklch(0.967 0.001 286.375);
  --nav-secondary-foreground: oklch(0.21 0.006 285.885);
  --nav-muted-foreground: oklch(0.552 0.016 285.938);
  --nav-border: oklch(0.92 0.004 286.32);
  --nav-ring: oklch(0.705 0.015 286.067);
  --nav-radius: .625rem;
  max-width: 1160px;
  margin: 0 auto 2.5rem;
  color: var(--nav-foreground);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
.navigation-page .site-directory *,
.navigation-page .site-directory *::before,
.navigation-page .site-directory *::after { box-sizing: border-box; }
.navigation-page .site-directory [hidden] { display: none !important; }
.navigation-page .page__content .site-directory a { border-bottom: 0; text-decoration: none; }
.navigation-page .site-directory a:focus-visible,
.navigation-page .site-directory button:focus-visible,
.navigation-page .site-directory input:focus-visible {
  outline: 2px solid var(--nav-primary);
  outline-offset: 3px;
}
.navigation-page .page__content .site-directory h1,
.navigation-page .page__content .site-directory h2 {
  margin: 0; padding: 0; border: 0; font-family: inherit; text-transform: none;
}
.navigation-page .page__content .site-directory h1::before,
.navigation-page .page__content .site-directory h1::after,
.navigation-page .page__content .site-directory h2::before { display: none; content: none; }
.site-directory__sr-only, .site-directory__results {
  position: absolute; width: 1px; height: 1px; margin: -1px !important; padding: 0;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.navigation-page .site-directory__breadcrumb {
  display: flex; align-items: center; gap: .55rem; margin: .4rem 0 2rem;
  font-size: .9375rem; color: var(--nav-muted-foreground);
}
.navigation-page .site-directory__breadcrumb a { color: var(--nav-muted-foreground); }
.navigation-page .site-directory__breadcrumb a:hover { color: var(--nav-primary); }
.site-directory__hero {
  display: flex; align-items: end; justify-content: space-between; gap: 1.6rem;
  padding: 0 0 1.6rem; margin-bottom: 1.35rem; border-bottom: 1px solid var(--nav-border);
}
.navigation-page .page__content .site-directory__hero h1 {
  font-size: clamp(2rem, 3.2vw, 2.35rem);
  font-weight: 650; line-height: 1.25; letter-spacing: -.035em;
}
.navigation-page .page__content .site-directory__intro {
  margin: .47rem 0 0 !important; color: var(--nav-muted-foreground);
  font-size: 1.0625rem !important; line-height: 1.6;
}
.site-directory__search {
  display: flex; align-items: center; gap: .7rem; flex: 0 1 345px;
  min-width: 220px; height: 46px; padding: .55rem .7rem .55rem .85rem;
  border: 1px solid var(--nav-border); border-radius: var(--nav-radius);
  background: var(--nav-card); color: var(--nav-muted-foreground);
  transition: border-color .16s, box-shadow .16s;
}
.site-directory__search:focus-within {
  border-color: var(--nav-primary);
  box-shadow: 0 0 0 3px oklch(0.488 0.243 264.376 / .12);
}
.site-directory__search svg { display: block; flex: none; }
.navigation-page .site-directory__search input {
  width: 100%; flex: 1; min-width: 0; height: 30px;
  margin: 0; padding: 0; border: 0; outline: 0;
  background: none; box-shadow: none; color: var(--nav-foreground);
  font: inherit; font-size: 1rem;
}
.navigation-page .site-directory__search input:focus { border: 0; outline: 0; box-shadow: none; }
.navigation-page .site-directory__search input::placeholder {
  color: var(--nav-muted-foreground); opacity: 1;
}
.navigation-page .site-directory__search button {
  flex: none; border: 0; padding: .15rem .2rem; background: none;
  color: var(--nav-primary); font: inherit; font-size: .92rem; cursor: pointer;
}
.site-directory__search kbd {
  flex: none; min-width: 25px; padding: .11rem .4rem; border: 1px solid var(--nav-border);
  border-radius: 5px; background: var(--nav-secondary); color: var(--nav-muted-foreground);
  font-size: .875rem; font-family: inherit; line-height: 1.25; text-align: center;
}
.site-directory__cards {
  display: grid; grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 1.2rem; align-items: stretch;
}
.site-directory__cards--single { grid-template-columns: minmax(0,min(100%,760px)); }
.site-directory__directory {
  position: relative; display: flex; flex-direction: column; min-width: 0;
  border: 1px solid var(--nav-border); border-radius: var(--nav-radius);
  background: var(--nav-card); overflow: hidden; scroll-margin-top: 95px;
}
.site-directory__legacy-anchor {
  position: absolute; top: 0; left: 0; width: 1px; height: 1px;
  opacity: 0; pointer-events: none;
}
.site-directory__directory-intro {
  padding: 1.35rem 1.45rem 1.15rem; border-bottom: 1px solid var(--nav-border);
}
.site-directory__directory-heading { display: flex; align-items: center; gap: .7rem; min-width: 0; }
.site-directory__directory-icon {
  display: grid; flex: none; place-items: center; width: 39px; height: 39px;
  border: 1px solid var(--nav-border); border-radius: 9px;
  background: var(--nav-secondary); color: var(--nav-primary);
}
.site-directory__directory-icon svg { display: block; width: 21px; height: 21px; }
.navigation-page .page__content .site-directory__directory h2 {
  font-size: 1.34rem; font-weight: 635; letter-spacing: -.018em; line-height: 1.36;
  color: var(--nav-foreground);
}
.navigation-page .page__content .site-directory__directory-cta {
  display: inline-flex; align-items: center; gap: .45rem;
  margin-left: auto; padding: .35rem .42rem; border-radius: 6px;
  color: var(--nav-muted-foreground); font-size: .9375rem; font-weight: 540; white-space: nowrap;
}
.navigation-page .page__content .site-directory__directory-cta:hover {
  background: var(--nav-secondary); color: var(--nav-primary);
}
.navigation-page .page__content .site-directory__directory-description {
  margin: .8rem 0 0 !important; color: var(--nav-muted-foreground);
  font-size: .975rem !important; line-height: 1.65;
}
.site-directory__directory-content { flex: 1 1 auto; min-width: 0; padding: .8rem .8rem 1rem; }
.site-directory__entries {
  display: grid; grid-template-columns: repeat(2,minmax(0,1fr));
  gap: .2rem .35rem;
}
.navigation-page .page__content a.site-directory__entry {
  display: flex; align-items: center; justify-content: space-between; gap: .6rem;
  min-width: 0; min-height: 78px; padding: .73rem .82rem;
  border-radius: 7px; color: var(--nav-foreground);
  transition: background .13s ease;
}
.navigation-page .page__content a.site-directory__entry:hover { background: var(--nav-secondary); }
.site-directory__entry-text { display: block; min-width: 0; }
.site-directory__entry-text strong {
  display: block; color: var(--nav-foreground); font-size: 1.025rem;
  font-weight: 570; line-height: 1.45; overflow-wrap: break-word;
}
.site-directory__entry-text small {
  display: block; margin-top: .25rem; color: var(--nav-muted-foreground);
  font-size: .9rem; font-weight: 420; line-height: 1.52; overflow-wrap: break-word;
}
.site-directory__entry-arrow { color: var(--nav-muted-foreground); flex: none; font-size: 1.05rem; }
.navigation-page .page__content a.site-directory__entry:hover .site-directory__entry-arrow {
  color: var(--nav-primary);
}
.site-directory__directory--external {
  grid-column: 1/-1; display: flex; flex-direction: row; align-items: center;
  min-height: 122px; gap: 1.2rem; padding: 1.4rem 1.55rem;
  background: var(--nav-secondary);
}
.site-directory__feature-icon {
  flex: none; display: grid; place-items: center; width: 50px; height: 50px;
  border-radius: var(--nav-radius); background: var(--nav-primary);
  color: var(--nav-primary-foreground);
}
.site-directory__feature-icon svg { display: block; }
.site-directory__feature-copy { min-width: 0; flex: 1 1 auto; }
.navigation-page .page__content .site-directory__directory--external h2 { font-size: 1.35rem; }
.navigation-page .page__content .site-directory__directory--external .site-directory__directory-description {
  margin: .28rem 0 0 !important; font-size: .96rem !important;
}
.site-directory__feature-address {
  display: block; margin-top: .3rem; color: var(--nav-muted-foreground);
  font-size: .875rem;
}
.navigation-page .page__content a.site-directory__feature-action {
  display: inline-flex; flex: none; align-items: center; justify-content: center; gap: .6rem;
  min-height: 43px; padding: .6rem 1rem; border-radius: 8px;
  background: var(--nav-primary); color: var(--nav-primary-foreground);
  font-size: .975rem; font-weight: 585; white-space: nowrap; transition: filter .15s ease;
}
.navigation-page .page__content a.site-directory__feature-action:hover { filter: brightness(.93); }
.site-directory__empty {
  padding: 2rem; border: 1px solid var(--nav-border);
  border-radius: var(--nav-radius); text-align: center;
}
.navigation-page .page__content .site-directory__empty p {
  margin: 0 0 .7rem !important; color: var(--nav-muted-foreground); font-size: 1rem !important;
}
.navigation-page .site-directory__empty button {
  border: 0; background: none; color: var(--nav-primary); font: inherit; cursor: pointer;
}
.site-directory__footer {
  display: flex; flex-wrap: wrap; gap: 1.5rem; margin-top: 1.9rem;
  padding: 1.2rem 0; border-top: 1px solid var(--nav-border);
}
.navigation-page .page__content .site-directory__footer a {
  color: var(--nav-muted-foreground); font-size: .9375rem;
}
.navigation-page .page__content .site-directory__footer a:hover { color: var(--nav-primary); }
@media (max-width: 940px) {
  .site-directory__cards, .site-directory__cards--single { grid-template-columns: minmax(0,1fr); }
}
@media (max-width: 720px) {
  .navigation-page.subpage-shell #main.wide-shell__main { padding: 1.4rem 1rem 3rem; }
  .site-directory__hero { align-items: stretch; flex-direction: column; gap: 1.2rem; }
  .site-directory__search { width: 100%; flex: none; }
  .site-directory__directory--external { align-items: flex-start; flex-wrap: wrap; }
  .navigation-page .page__content a.site-directory__feature-action { margin-left: 70px; }
}
@media (max-width: 520px) {
  .site-directory__cards { gap: .95rem; }
  .site-directory__directory-intro { padding: 1.2rem; }
  .site-directory__directory-content { padding: .6rem; }
  .site-directory__entries { grid-template-columns: minmax(0,1fr); gap: 0; }
  .navigation-page .page__content a.site-directory__entry { min-height: 68px; }
  .site-directory__directory--external { gap: .9rem; padding: 1.2rem; }
  .site-directory__feature-icon { width: 44px; height: 44px; }
  .navigation-page .page__content a.site-directory__feature-action { margin-left: 0; width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .site-directory__search,
  .navigation-page .site-directory__entry,
  .navigation-page .site-directory__feature-action { transition: none !important; }
}