.siteheader {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.siteheader.is-stuck {
  border-bottom-color: var(--rule);
  background: rgba(255, 255, 255, 0.94);
}

.siteheader__inner {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
  height: var(--header-h);
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.siteheader__brand {
  display: flex;
  align-items: center;
  color: var(--brand);
  flex: none;
}

.wordmark {
  width: 104px;
  height: auto;
}

.siteheader__nav {
  display: flex;
  align-items: center;
  gap: clamp(4px, 1.4vw, 20px);
  margin-inline: auto;
}

.navlink {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 10px;
  border-radius: var(--r-sm);
  color: var(--navy-muted);
  font-size: var(--step-ui);
  font-weight: 700;
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}

.navlink::after {
  content: '';
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 2px;
  height: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s var(--ease);
}

.navlink:hover {
  color: var(--navy);
}

.navlink:hover::after,
.navlink.is-current::after {
  transform: scaleX(1);
}

.navlink.is-current {
  color: var(--navy);
}

.navlink--quiet::after {
  display: none;
}

.navlink--quiet {
  font-weight: 600;
}

.chev {
  transition: transform 0.25s var(--ease);
  opacity: 0.7;
}

.navgroup {
  position: relative;
}

.navgroup.is-open .chev {
  transform: rotate(180deg);
}

.navgroup__menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  translate: -50% 0;
  min-width: 288px;
  padding-top: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
}

.navgroup.is-open .navgroup__menu {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.navgroup__panel {
  padding: 8px;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  background: #fff;
  box-shadow: var(--shadow-menu);
}

.navgroup__panel a {
  display: block;
  padding: 11px 14px;
  border-radius: var(--r-sm);
  transition: background 0.18s var(--ease);
}

.navgroup__panel a:hover {
  background: var(--brand-wash);
}

.navgroup__label {
  display: block;
  color: var(--navy);
  font-weight: 700;
  font-size: var(--step-ui);
}

.navgroup__note {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: var(--step-micro);
  line-height: 1.45;
}

.siteheader__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.siteheader__toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: var(--r-sm);
  border: 1px solid var(--rule);
}

.siteheader__toggle span {
  position: absolute;
  left: 12px;
  width: 18px;
  height: 2px;
  border-radius: var(--r-sm);
  background: var(--navy);
  transition: transform 0.28s var(--ease), opacity 0.2s var(--ease);
}

.siteheader__toggle span:nth-child(1) {
  top: 16px;
}

.siteheader__toggle span:nth-child(2) {
  top: 24px;
}

.siteheader__toggle[aria-expanded='true'] span:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.siteheader__toggle[aria-expanded='true'] span:nth-child(2) {
  transform: translateY(-4px) rotate(-45deg);
}

.mobilenav {
  display: none;
  border-top: 1px solid var(--rule);
  background: #fff;
  max-height: calc(100dvh - var(--header-h));
  overflow-y: auto;
}

.mobilenav__inner {
  padding: 10px var(--gutter) 28px;
}

.mobilenav__link,
.mobilenav__child {
  display: block;
  padding: 13px 0;
  border-bottom: 1px solid var(--rule-soft);
  color: var(--navy);
  font-weight: 700;
  font-size: var(--step-intro);
}

.mobilenav__child {
  padding-left: 16px;
  font-weight: 600;
  color: var(--navy-muted);
  font-size: 1rem;
}

.mobilenav__label {
  margin: 18px 0 4px;
  color: var(--brand-press);
  font-size: var(--step-label);
  font-weight: 700;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.mobilenav__link.is-current,
.mobilenav__child.is-current {
  color: var(--brand-press);
}

.mobilenav__actions {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

@media (max-width: 1000px) {
  .siteheader__nav {
    display: none;
  }

  .siteheader__inner {
    justify-content: space-between;
  }

  .siteheader__toggle {
    display: block;
  }

  .siteheader__actions .navlink--quiet {
    display: none;
  }

  .mobilenav:not([hidden]) {
    display: block;
  }
}

@media (max-width: 520px) {
  .siteheader__actions .btn--sm {
    display: none;
  }
}

/* ---------- Footer ---------- */

.sitefooter {
  border-top: 1px solid var(--rule);
  padding-top: clamp(56px, 7vw, 88px);
}

.sitefooter__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
  gap: clamp(32px, 6vw, 90px);
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-bottom: clamp(48px, 6vw, 72px);
}

.sitefooter__brand {
  display: inline-flex;
  color: var(--brand);
}

.sitefooter__brand .wordmark {
  width: 116px;
}

.sitefooter__line {
  margin-top: 18px;
  max-width: 30ch;
  color: var(--muted);
  font-size: var(--step-small);
}

.sitefooter__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  color: var(--brand-press);
  font-weight: 700;
}

.sitefooter__cta:hover {
  color: var(--brand-hover);
}

.sitefooter__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.sitefooter__coltitle {
  margin-bottom: 14px;
  color: var(--navy);
  font-size: var(--step-label);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.sitefooter__col a {
  display: block;
  padding: 5px 0;
  color: var(--body);
  font-size: var(--step-ui);
  transition: color 0.18s var(--ease);
}

.sitefooter__col a:hover {
  color: var(--brand-press);
}

.sitefooter__base {
  border-top: 1px solid var(--rule);
}

.sitefooter__base > * {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.sitefooter__utility {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  padding-top: 24px;
}

.sitefooter__utility a {
  color: var(--muted);
  font-size: var(--step-micro);
  transition: color 0.18s var(--ease);
}

.sitefooter__utility a:hover {
  color: var(--navy);
}

.sitefooter__legal {
  padding-block: 14px 34px;
  color: var(--muted);
  font-size: var(--step-micro);
}

@media (max-width: 860px) {
  .sitefooter__inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .sitefooter__cols {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }
}