.header-shell {
  position: sticky;
  top: 0;
  z-index: 40;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-left,
.header-right {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-nav {
  display: flex;
  gap: var(--space-16);
  align-items: center;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.header-nav a {
  padding: 4px 0;
  position: relative;
  text-align: center;
}
.header-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}
.header-nav a:hover::after,
.header-nav a:focus-visible::after {
  width: 100%;
}
.header-brand {
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  border: var(--border-hairline) solid var(--color-border-soft);
  background-color: rgba(255, 255, 255, 0.8);
}
.nav-toggle {
  margin-left: auto;
}
.nav-toggle span {
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(2px) rotate(45deg);
}
.nav-toggle.is-open span:nth-child(2) {
  transform: translateY(-2px) rotate(-45deg);
}
.mobile-nav-panel {
  display: block;
}
.mobile-nav-list {
  max-width: var(--container-max);
  background-color: rgb(255, 255, 255);
  margin: 0 auto;
}
@media (min-width: 960px) {
  .nav-toggle {
    display: none;
  }
  .mobile-nav-panel {
    display: none;
  }
}
@media (max-width: 959.98px) {
  .header-nav-left,
  .header-nav-right {
    display: none;
  }
  .header-left {
    gap: var(--space-16);
  }
  .header-brand {
    padding-inline: 8px;
  }
}