.header {
  position: sticky;
  top: var(--notice-height);
  z-index: var(--z-header);
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.9));
  border-bottom: 1px solid rgba(30, 64, 175, 0.45);
}

.header__inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: center;
}

.header__nav {
  width: 100%;
  max-width: var(--container-lg);
  padding-inline: var(--space-md);
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) auto minmax(0, 1.1fr);
  align-items: center;
  column-gap: var(--space-lg);
}

.header__brand {
  display: flex;
  align-items: center;
  justify-content: center;
}

.notice-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-notice);
  height: var(--notice-height);
  display: flex;
  align-items: center;
  justify-content: center;
  padding-inline: var(--space-md);
  background: linear-gradient(90deg, #b91c1c, #ef4444);
  color: #fef2f2;
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 8px 20px rgba(127, 29, 29, 0.7);
}

.notice-bar__inner {
  max-width: var(--container-lg);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  text-align: center;
}

.notice-bar__pill {
  padding-inline: 0.55rem;
  padding-block: 0.1rem;
  border-radius: 999px;
  border: 1px solid rgba(254, 242, 242, 0.8);
  font-size: 0.68em;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle at top left, rgba(106, 242, 163, 0.16), transparent 60%), rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.6);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.9);
}

.brand__mark {
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 0.9rem;
  background: radial-gradient(circle at 30% 20%, #6af2a3 0, #22c55e 35%, #0f766e 80%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #020617;
  font-weight: 700;
  font-size: 1.05rem;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.brand__tagline {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.nav--left {
  justify-content: flex-start;
}

.nav--right {
  justify-content: flex-end;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__item {
  display: flex;
}

.nav__item--cta .nav__link {
  padding-inline: 0.9rem;
  padding-block: 0.35rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(15, 23, 42, 0.9);
}

.nav__item--cta .nav__link:hover {
  border-color: rgba(226, 232, 240, 0.9);
  background: rgba(15, 23, 42, 1);
}

.nav__link {
  position: relative;
  padding-block: 0.25rem;
  color: var(--color-text-soft);
  white-space: nowrap;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.1rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #6af2a3, #d7ff70);
  transform-origin: center;
  transform: scaleX(0);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__link:hover {
  color: var(--color-text);
}

.nav__link:hover::after {
  transform: scaleX(1);
  opacity: 1;
}

.nav__link--active {
  color: var(--color-accent-strong);
}

.nav__link--active::after {
  transform: scaleX(1);
  opacity: 1;
}

.nav__link--cta {
  color: var(--color-accent-strong);
}

.nav-toggle {
  display: none;
  position: relative;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(15, 23, 42, 0.96);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0;
}

.nav-toggle__bar {
  width: 1.1rem;
  height: 2px;
  border-radius: 999px;
  background-color: #e5e7eb;
  transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
}

.nav-toggle--open .nav-toggle__bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle--open .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle--open .nav-toggle__bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

.nav-overlay {
  position: fixed;
  inset: calc(var(--notice-height) + var(--header-height)) 0 0 0;
  z-index: var(--z-nav-overlay);
  background: radial-gradient(circle at top left, rgba(106, 242, 163, 0.08), transparent 60%), rgba(3, 7, 18, 0.98);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.nav-overlay--open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-overlay__inner {
  max-width: var(--container-lg);
  margin-inline: auto;
  padding: var(--space-lg) var(--space-md) var(--space-2xl);
  background: #020617;
}

.nav-overlay__list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-overlay__link {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-block: 0.35rem;
  border-bottom: 1px solid rgba(30, 64, 175, 0.5);
  font-size: var(--font-size-md);
  color: var(--color-text-soft);
}

.nav-overlay__link span {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

.nav-overlay__link--active {
  color: var(--color-accent-strong);
}

@media (max-width: 1024px) {
  .header__nav {
    column-gap: var(--space-md);
  }
}

@media (max-width: 900px) {
  .header__nav {
    grid-template-columns: auto auto;
  }
}

@media (max-width: 768px) {
  .header__nav {
    grid-template-columns: auto auto;
    column-gap: var(--space-md);
  }

  .header__brand {
    justify-content: flex-start;
  }

  .nav {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    justify-self: flex-end;
  }

  .notice-bar {
    height: auto;
    padding-block: 0.4rem;
  }

  .notice-bar__inner {
    display: block;
    font-size: 8px;
  }
}

@media (max-width: 600px) {
  .header__inner {
    height: auto;
  }

  .header__nav {
    padding-inline: var(--space-sm);
  }
}