.header-shell {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  width: 100%;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(18px);
  border-bottom: var(--border-width-thin) solid var(--color-border-subtle);
}
.header-shell__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}
.header-shell__brand-left .brand {
  justify-content: flex-start;
}
.header-shell__brand-center .brand {
  justify-content: flex-start;
}
.header-shell__nav-right .header-nav {
  justify-content: flex-end;
}
.header-shell__nav-center .header-nav {
  justify-content: center;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-width: 0;
}
.brand__mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-accent-orange) 0%, var(--color-accent-teal) 100%);
  border: var(--border-width-thin) solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  flex-shrink: 0;
}
.brand__text {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-width: 0;
}
.brand__name {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand__tagline {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-soft);
}
.header-nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0.25rem;
  cursor: pointer;
}
.header-nav-toggle__bar {
  width: 20px;
  height: 1.5px;
  background-color: var(--color-text);
  border-radius: 999px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.header-nav-toggle__bar + .header-nav-toggle__bar {
  margin-top: 4px;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}
.header-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.header-nav__list--secondary {
  gap: var(--space-md);
}
.header-nav__item {
  display: block;
}
.header-nav__link {
  position: relative;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 0.15rem 0;
  white-space: nowrap;
}
.header-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -0.15rem;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-teal));
  transition: right var(--transition-base);
}
.header-nav__link:hover,
.header-nav__link:focus-visible {
  color: var(--color-text);
}
.header-nav__link:hover::after,
.header-nav__link:focus-visible::after {
  right: 0;
}
.header-nav__link--active {
  color: var(--color-text);
}
.header-nav__link--active::after {
  right: 0;
}
.header-nav__cta-group {
  display: flex;
  align-items: center;
}
.header-nav__cta {
  white-space: nowrap;
}
.header-nav__cta--active {
  box-shadow: var(--shadow-soft);
}
@media (max-width: 1023.98px) {
  .header-shell__inner {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
  }
  .header-nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .header-nav {
    position: fixed;
    inset: 56px 0 auto 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(18px);
    border-bottom: var(--border-width-thin) solid var(--color-border-subtle);
    padding: var(--space-lg) var(--space-xl) var(--space-xl);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }
  .header-nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .header-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
  .header-nav__link {
    font-size: var(--text-md);
    white-space: normal;
  }
  .header-nav__cta-group {
    width: 100%;
  }
  .header-nav__cta {
    width: 100%;
    justify-content: center;
  }
}
@media (max-width: 480px) {
  .header-nav {
    inset: 52px 0 auto 0;
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }
}
@media (min-width: 1024px) {
  .header-nav-toggle {
    display: none;
  }
  .header-nav {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    padding: 0;
  }
}