/* Shared navigation: vector icons, a quiet rail, and clear selected states. */
:root {
  --nav-surface: #ffffffed;
  --nav-rail: #f4f6f9;
  --nav-line: #e1e7ef;
  --nav-text: #4c5d73;
  --nav-icon: #73859b;
  --nav-hover: #ffffff;
  --nav-active: #fff0ed;
  --nav-active-line: #f0cdc7;
  --nav-shadow: 0 8px 30px #17283d0d, 0 1px 3px #17283d06, inset 0 1px 0 #ffffff;
}
:root[data-theme="dark"] {
  --nav-surface: #122035ed;
  --nav-rail: #0b1627;
  --nav-line: #304159;
  --nav-text: #bfccde;
  --nav-icon: #8fa3bf;
  --nav-hover: #1c2d45;
  --nav-active: #3a252d;
  --nav-active-line: #765052;
  --nav-shadow: 0 10px 32px #0004, inset 0 1px 0 #ffffff06;
}
:root .floating-header, :root .floating-header.has-scrolled {
  padding-inline: 18px;
  gap: 16px;
  border-color: var(--nav-line);
  border-radius: 16px;
  background: var(--nav-surface);
  box-shadow: var(--nav-shadow);
}
.floating-header .desktop-nav {
  display: flex;
  flex-shrink: 0;
  gap: 2px;
  padding: 4px;
  border: 1px solid var(--nav-line);
  border-radius: 12px;
  background: var(--nav-rail);
}
.floating-header .nav-link {
  position: relative;
  justify-content: center;
  gap: 7px;
  min-height: 42px;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--nav-text);
  font: 500 12px/1.3 Arial, Helvetica, sans-serif;
  transition: color .18s, background .18s, border-color .18s, box-shadow .18s;
}
.floating-header .nav-icon {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  color: var(--nav-icon);
  stroke-width: 1.7;
  transition: color .18s, transform .18s;
}
.floating-header .nav-link .nav-chevron { width: 11px; height: 11px; margin-left: 1px; color: var(--nav-icon); }
.floating-header .nav-link:hover {
  background: var(--nav-hover);
  color: var(--ks-ink);
  border-color: var(--nav-line);
  box-shadow: 0 2px 5px #17283d06;
}
.floating-header .nav-link:is(.is-current, [aria-current], [aria-expanded="true"]) {
  background: var(--nav-active);
  border-color: var(--nav-active-line);
  color: var(--ks-red);
  box-shadow: inset 0 1px 0 #ffffff08;
}
.floating-header .nav-link:is(:hover, .is-current, [aria-current], [aria-expanded="true"]) .nav-icon { color: var(--ks-red); }
.floating-header .nav-link.is-current::after { content: none; }
.floating-header .nav-link[aria-expanded="true"] .nav-icon { transform: none; }
.floating-header .nav-link[aria-expanded="true"] .nav-chevron { transform: rotate(180deg); }
.floating-header :is(.nav-link, .header-cta, .menu-toggle):focus-visible { outline: 2px solid var(--ks-red); outline-offset: 3px; }
.floating-header .header-cta {
  display: inline-flex;
  flex-shrink: 0;
  gap: 9px;
  min-height: 44px;
  padding: 10px 15px;
  border-radius: 10px;
  font-size: 12px;
  box-shadow: 0 3px 8px #c8343215;
}
.floating-header .header-cta .nav-icon { color: inherit; }
.floating-header .header-cta[aria-current="page"] { outline: 2px solid var(--ks-red); outline-offset: 3px; }
.floating-header .menu-toggle { display: none; }
.floating-header .nav-dropdown-panel {
  top: calc(100% + 15px);
  left: -5px;
  width: 354px;
  padding: 17px 10px 10px;
  border-color: var(--nav-line);
  border-radius: 14px;
}
.floating-header .dropdown-caption { padding: 0 11px 12px; font-size: 8px; letter-spacing: .1em; }
.floating-header .nav-dropdown-panel a { padding: 12px 11px; border: 1px solid transparent; border-radius: 9px; gap: 12px; }
.floating-header .nav-dropdown-panel a:hover { border-color: var(--nav-line); background: var(--nav-rail); }
.floating-header .dropdown-symbol { width: 36px; height: 36px; flex-shrink: 0; border-radius: 9px; }
.floating-header .dropdown-symbol .nav-icon { width: 19px; height: 19px; color: var(--ks-red); }
.floating-header .nav-dropdown-panel a > span:nth-child(2) { font-weight: 600; }
.floating-header .nav-dropdown-panel small { margin-top: 4px; font-weight: 400; }
.floating-header .nav-dropdown-panel .dropdown-arrow { transition: transform .18s; }
.floating-header .nav-dropdown-panel a:hover .dropdown-arrow { transform: translate(2px,-2px); }
.floating-header .nav-dropdown-panel p { margin-top: 7px; padding: 13px 11px 3px; font-size: 9px; }
@media (max-width: 1279px) {
  :root .floating-header { gap: 12px; }
  .floating-header .nav-link { padding-inline: 8px; gap: 6px; font-size: 11px; }
  .floating-header .nav-icon { width: 15px; height: 15px; flex-basis: 15px; }
  .floating-header .header-cta { padding-inline: 13px; font-size: 11px; }
}
@media (max-width: 1180px) {
  :root .floating-header { height: 72px; }
  .floating-header .desktop-nav { display: none; }
  .floating-header .header-cta { margin-left: auto; }
  .floating-header .menu-toggle {
    display: flex; flex: 0 0 44px; width: 44px; height: 44px; padding: 11px;
    margin-left: 0; justify-content: center; align-items: center; flex-direction: column; gap: 6px;
    border: 1px solid var(--nav-line); border-radius: 10px; background: var(--nav-rail);
  }
  .floating-header .menu-toggle:hover, .floating-header .menu-toggle[aria-expanded="true"] { border-color: var(--nav-active-line); background: var(--nav-active); }
  .floating-header .menu-toggle span { display: block; width: 20px; height: 1.5px; background: var(--ks-ink); transition: transform .18s; }
  .floating-header .menu-toggle[aria-expanded="true"] span { background: var(--ks-red); }
  .floating-header .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.75px) rotate(45deg); }
  .floating-header .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
  .floating-header .mobile-nav:not([hidden]) {
    position: absolute; top: calc(100% + 10px); left: 0; right: 0;
    display: flex; flex-direction: column; gap: 3px; padding: 10px;
    max-height: calc(100dvh - 118px); overflow-y: auto; overscroll-behavior: contain;
    border: 1px solid var(--nav-line); border-radius: 14px;
    background: var(--ks-card,#fff); box-shadow: var(--nav-shadow);
    backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
  }
  .floating-header .mobile-nav a:not(.mobile-demo-link) {
    display: grid; grid-template-columns: 22px 1fr auto; align-items: center; gap: 13px;
    min-height: 49px; padding: 11px 14px; border: 1px solid transparent; border-radius: 9px;
    color: var(--nav-text); font-size: 14px;
  }
  .floating-header .mobile-nav .nav-icon { width: 19px; height: 19px; color: var(--nav-icon); }
  :root .floating-header .mobile-nav a .nav-item-label { color: inherit; font: 500 14px/1.4 Arial,Helvetica,sans-serif; }
  .floating-header .mobile-nav a .mobile-nav-index { color: var(--nav-icon); font: 9px/1.4 'SFMono-Regular',Consolas,monospace; }
  .floating-header .mobile-nav a:not(.mobile-demo-link):hover { background: var(--nav-rail); border-color: var(--nav-line); }
  .floating-header .mobile-nav a[aria-current="page"] { background: var(--nav-active); border-color: var(--nav-active-line); color: var(--ks-red); }
  .floating-header .mobile-nav a:is(:hover, [aria-current]) .nav-icon { color: var(--ks-red); }
  .floating-header .mobile-nav .mobile-demo-link { margin: 7px 4px 0; padding: 17px 10px 12px; font-size: 13px; border-top: 1px solid var(--nav-line); color: var(--ks-red); }
  .floating-header .mobile-nav button { padding: 9px 14px 12px; font-size: 12px; color: var(--nav-text); }
}
@media (max-width: 700px) {
  .footer-site-links > a:last-child { grid-column: 1 / -1; }
  :root .floating-header, :root .floating-header.has-scrolled { height: 66px; padding-inline: 12px; gap: 8px; border-radius: 13px; }
  .floating-header .header-cta { min-height: 40px; font-size: 11px; }
}
@media (max-width: 600px) {
  .floating-header .header-cta { display: none; }
  .floating-header .menu-toggle { margin-left: auto; }
}
@media (max-width: 350px) {
  :root .floating-header { gap: 6px; padding-inline: 10px; }
  .floating-header .brand { font-size: 21px; gap: 7px; }
  .floating-header .brand-sub { font-size: 5px; letter-spacing: 1.5px; }
}
@media (prefers-reduced-motion: reduce) {
  .floating-header :is(.nav-link, .nav-icon, .nav-chevron, .dropdown-arrow, .menu-toggle span) { transition: none; }
}