.sgc-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(22px);
  background: linear-gradient(to bottom, rgba(8, 9, 13, 0.96), rgba(8, 9, 13, 0.88));
  border-bottom: 1px solid var(--color-border-subtle);
}

.sgc-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
  gap: var(--space-4);
}

.sgc-header-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  text-decoration: none;
}

.sgc-logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 20%, var(--color-primary-strong), var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: #050509;
  box-shadow: var(--shadow-sm);
}

.sgc-logo-text {
  display: flex;
  flex-direction: column;
}

.sgc-logo-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.sgc-logo-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.sgc-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.sgc-nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.sgc-nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-200);
  text-decoration: none;
  padding-block: var(--space-2);
}

.sgc-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transition: width var(--transition-fast);
}

.sgc-nav-link:hover::after,
.sgc-nav-link:focus-visible::after {
  width: 100%;
}

.sgc-nav-link-highlight {
  color: var(--color-primary-strong);
}

.sgc-nav-cta-wrap {
  margin-left: var(--space-4);
}

.sgc-nav-cta {
  font-size: var(--font-size-xs);
}

.sgc-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background: rgba(15, 17, 25, 0.95);
  color: var(--color-text);
  cursor: pointer;
}

.sgc-nav-toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast), width var(--transition-fast);
}

.sgc-nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary-strong);
  outline-offset: 2px;
}

@media (max-width: 768px) {
  .sgc-header-inner {
    padding-block: var(--space-3);
  }

  .sgc-nav-toggle {
    display: inline-flex;
  }

  .sgc-nav {
    position: fixed;
    inset-inline: 0;
    top: 60px;
    background: radial-gradient(circle at top left, rgba(212, 175, 55, 0.06), transparent 55%), var(--color-surface-alt);
    border-bottom: 1px solid var(--color-border-subtle);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-6);
    gap: var(--space-6);
  }

  .sgc-nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
    width: 100%;
  }

  .sgc-nav-cta-wrap {
    width: 100%;
    margin-left: 0;
  }

  .sgc-nav-cta {
    width: 100%;
    justify-content: center;
  }

  .sgc-nav-link {
    font-size: var(--font-size-base);
  }

  .sgc-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .sgc-nav-toggle.is-active .sgc-nav-toggle-bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
    width: 20px;
  }

  .sgc-nav-toggle.is-active .sgc-nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .sgc-nav-toggle.is-active .sgc-nav-toggle-bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 20px;
  }
}

@media (min-width: 769px) {
  .sgc-nav {
    position: static;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    background: transparent;
    border: none;
    padding: 0;
  }
}

.sgc-header-nav-lock {
  overflow: hidden;
}