.site-header {
  position: fixed;
  top: var(--space-lg);
  left: 0;
  right: 0;
  z-index: var(--z-header);
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.site-header__inner {
  width: 100%;
  max-width: min(var(--container-lg), 100% - 2.5rem);
  pointer-events: auto;
}
.nav-shell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle at 0% 0%, rgba(0, 212, 255, 0.18), transparent 60%), radial-gradient(circle at 100% 100%, rgba(77, 255, 136, 0.18), transparent 60%), var(--color-nav-bg);
  border: 1px solid var(--color-nav-border);
  box-shadow: var(--shadow-nav);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
}
.nav-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.7);
  mix-blend-mode: soft-light;
  pointer-events: none;
}
.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.9);
}
.nav-brand__mark {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #ffffff, #e0faff);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--color-text);
}
.nav-brand__text {
  display: flex;
  flex-direction: column;
}
.nav-brand__title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
}
.nav-brand__subtitle {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
}
.nav-main {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: rgba(15, 23, 42, 0.04);
}
.nav-list__item {
  margin: 0;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-base), background var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast);
}
.nav-link::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid transparent;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), opacity var(--transition-base);
  opacity: 0;
}
.nav-link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-1px);
}
.nav-link:hover::after {
  opacity: 1;
  border-color: rgba(0, 212, 255, 0.6);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.7), 0 0 0 3px rgba(0, 212, 255, 0.35);
}
.nav-link--active {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.25);
}
.nav-link--active::after {
  opacity: 1;
  border-color: rgba(0, 212, 255, 0.7);
}
.nav-cta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-xs);
}
.nav-cta__label {
  display: none;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(255, 255, 255, 0.96);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast), border-color var(--transition-base);
}
.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 2px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base), background var(--transition-base);
}
.nav-toggle[aria-expanded="true"] {
  background: linear-gradient(135deg, #00f0ff, #4dff88);
  border-color: rgba(0, 240, 255, 0.7);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.4);
  transform: translateY(1px);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
  width: 1.1rem;
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
  width: 1.1rem;
}
.nav-toggle:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}
.nav-overlay {
  display: none;
}
.nav-overlay--active {
  display: block;
  position: fixed;
  inset: 0;
  z-index: var(--z-nav-overlay);
  background: radial-gradient(circle at 0% 0%, rgba(0, 212, 255, 0.3), transparent 60%), radial-gradient(circle at 100% 100%, rgba(77, 255, 136, 0.3), transparent 60%), rgba(15, 23, 42, 0.96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.nav-overlay__panel {
  position: absolute;
  left: 50%;
  top: calc(var(--header-height) + 1.5rem);
  transform: translateX(-50%);
  width: min(22rem, 100% - 2.5rem);
  border-radius: 1.75rem;
  padding: 1.25rem 1.25rem 1.4rem;
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.7);
}
.nav-overlay__list {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin: 0 0 0.9rem;
  padding: 0;
}
.nav-overlay__item {
  margin: 0;
}
.nav-overlay__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: rgba(226, 232, 240, 0.9);
  transition: background var(--transition-base), color var(--transition-base), transform var(--transition-fast);
}
.nav-overlay__link span {
  max-width: 100%;
}
.nav-overlay__link-indicator {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 999px;
  background: transparent;
  border: 1px solid rgba(148, 163, 184, 0.6);
}
.nav-overlay__link--active {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.18), rgba(77, 255, 136, 0.18));
  color: #f9fafb;
}
.nav-overlay__link--active .nav-overlay__link-indicator {
  background: #00f0ff;
  border-color: transparent;
  box-shadow: 0 0 0 4px rgba(0, 240, 255, 0.4);
}
.nav-overlay__link:hover {
  background: rgba(15, 23, 42, 0.9);
  transform: translateY(-1px);
}
.nav-overlay__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}
.nav-overlay__meta {
  font-size: 0.7rem;
  color: rgba(148, 163, 184, 0.9);
}
.nav-overlay__meta strong {
  color: #e5f6ff;
}
.nav-overlay__cta .btn {
  padding-inline: 1.1rem;
}
@media (max-width: 1279.98px) {
  .nav-shell {
    max-width: 100%;
  }
}
@media (max-width: 1023.98px) {
  .site-header {
    top: var(--space-sm);
  }
  .site-header__inner {
    max-width: 100%;
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }
  .nav-shell {
    padding-inline: 0.6rem;
    gap: var(--space-sm);
  }
  .nav-main {
    display: none;
  }
  .nav-cta__label {
    display: none;
  }
  .nav-cta .btn {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
}
@media (max-width: 767.98px) {
  .nav-overlay__panel {
    top: calc(var(--header-height) + 1.25rem);
    width: min(22rem, 100% - 2rem);
  }
}
@media (max-width: 479.98px) {
  .site-header__inner {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
  .nav-brand__subtitle {
    display: none;
  }
  .nav-brand__title {
    font-size: 0.8rem;
  }
}

/* Mobile burger menu fix */
html.nav-menu-open,
body.nav-menu-open {
  overflow: hidden;
}

@media (max-width: 1023.98px) {
  .site-header {
    z-index: 99999;
  }

  .site-header__inner {
    position: relative;
    z-index: 100001;
  }

  .nav-shell {
    position: relative;
    z-index: 100001;
  }

  .nav-toggle {
    position: relative;
    z-index: 100002;
    flex-shrink: 0;
  }

  .nav-overlay {
    pointer-events: none;
  }

  .nav-overlay--active {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 100000;
    pointer-events: auto;
    overflow-y: auto;
    padding: calc(var(--header-height) + var(--space-xl)) var(--space-md) var(--space-xl);
    background:
      radial-gradient(circle at 0% 0%, rgba(0, 212, 255, 0.28), transparent 58%),
      radial-gradient(circle at 100% 100%, rgba(77, 255, 136, 0.24), transparent 58%),
      rgba(15, 23, 42, 0.97);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
  }

  .nav-overlay__panel {
    position: static;
    left: auto;
    top: auto;
    transform: none;
    width: min(28rem, 100%);
    max-height: none;
    margin: 0 auto;
    border-radius: 1.5rem;
    padding: var(--space-lg);
    background: rgba(15, 23, 42, 0.96);
    border: 1px solid rgba(148, 163, 184, 0.45);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.65);
  }

  .nav-overlay__list {
    gap: 0;
    margin: 0 0 var(--space-md);
  }

  .nav-overlay__item + .nav-overlay__item {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-overlay__link {
    width: 100%;
    min-height: 50px;
    padding: 12px 4px;
    border-radius: 0;
    font-size: clamp(0.78rem, 3.2vw, 0.95rem);
    line-height: 1.35;
    letter-spacing: 0.08em;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .nav-overlay__link:hover {
    border-radius: var(--radius-md);
  }

  .nav-overlay__footer {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
  }

  .nav-overlay__meta {
    text-align: center;
    line-height: 1.5;
  }

  .nav-overlay__cta .btn {
    width: 100%;
    justify-content: center;
    text-align: center;
    white-space: normal;
  }
}

@media (max-width: 479.98px) {
  .site-header__inner {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  .nav-brand {
    max-width: calc(100% - 3rem);
    padding-inline: 0.55rem;
  }

  .nav-brand__title {
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .nav-overlay--active {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  .nav-overlay__panel {
    padding: var(--space-md);
  }

  .nav-overlay__link {
    font-size: 0.76rem;
    letter-spacing: 0.06em;
  }
}