.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
}

.announcement-bar {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--color-text);
  color: #f1f1f1;
}

.announcement-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.8rem;
}

.announcement-bar p {
  margin: 0;
  color: inherit;
  font-size: 0.92rem;
}

.heritage-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: #f1f1f1;
  font-family: "Work Sans", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.heritage-badge::before {
  content: "";
  width: 1px;
  height: 0.9rem;
  background: var(--color-primary);
}

.site-nav {
  border-bottom: 1px solid var(--color-line);
  background: rgba(249, 249, 249, 0.96);
  backdrop-filter: blur(16px);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5rem;
}

.nav-toggle {
  display: none;
  width: 3rem;
  height: 3rem;
  padding: 0.75rem;
  border: 1px solid var(--color-line);
  border-radius: 0.25rem;
  background: #fff;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 0.24rem 0;
  background: var(--color-text);
}

.nav-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.nav-links,
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links a {
  position: relative;
  padding: 0.2rem 0;
  color: var(--color-text-muted);
  font-weight: 600;
  &:hover {
    color: var(--color-primary);
  }
}

.nav-links a::after {
  /* content: ""; */
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.65rem;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(1);
  transform-origin: left;
  transition: transform var(--transition-fast);
  opacity: 0;
}

.nav-links a:hover::after,
.nav-links a.is-active::after {
  transform: scaleX(1);
  opacity: 1;
}

.nav-links a.is-active {
  color: var(--color-text);
}

.brand-and-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5rem;
  flex-grow: 1;
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav__inner {
    flex-wrap: wrap;
    align-items: center;
    padding-top: 0.75rem;
  }

  .nav-panel {
    position: static;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding: 0 1rem;
    margin-top: 0.75rem;
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    transform: none;
    transition: max-height var(--transition-fast), opacity var(--transition-fast), visibility var(--transition-fast), margin-top var(--transition-fast);
  }

  .nav-panel.is-open {
    max-height: 32rem;
    opacity: 1;
    visibility: visible;
    margin-top: 0.75rem;
    margin-bottom: 0.75rem;
    padding: 1rem;
  }

  .nav-links,
  .nav-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 720px) {
  .announcement-bar__inner {
    min-height: auto;
    padding-block: 0.7rem;
    flex-direction: column;
    align-items: start;
  }
}