.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(6, 7, 10, 0.96), rgba(6, 7, 10, 0.9));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
  gap: var(--space-4);
}

.site-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.site-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(212, 168, 82, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 10%, rgba(212, 168, 82, 0.32), transparent 60%),
              rgba(10, 12, 20, 0.95);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.8), var(--shadow-soft);
}

.site-header__logo-chip {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: conic-gradient(from 120deg, #ffffff, #d4a852, #9d7432, #ffffff);
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
}

.site-header__brand-name {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-header__brand-tagline {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
}

.site-header__nav {
  display: flex;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
}

.site-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0.35rem 0;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), rgba(212, 168, 82, 0));
  transition: width var(--transition-normal);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--gray-50);
}

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after {
  width: 100%;
}

.site-header__nav-item--accent .site-header__nav-link {
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(212, 168, 82, 0.7);
  background: rgba(212, 168, 82, 0.08);
  color: var(--color-primary);
}

.site-header__nav-item--accent .site-header__nav-link::after {
  display: none;
}

.site-header__nav-link--accent:hover,
.site-header__nav-link--accent:focus-visible {
  background: rgba(212, 168, 82, 0.18);
  color: #fff;
}

.site-header__toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 36px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(8, 10, 18, 0.9);
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.site-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--gray-100);
  transition: transform var(--transition-normal), opacity var(--transition-normal), width var(--transition-normal);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.site-header__toggle--open .site-header__toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(40deg);
  width: 20px;
}

.site-header__toggle--open .site-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header__toggle--open .site-header__toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-40deg);
  width: 20px;
}

@media (max-width: 768px) {
  .site-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

  .site-header__toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .site-header__nav {
    position: fixed;
    inset: 64px 0 auto 0;
    background: rgba(6, 7, 10, 0.98);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4);
  }

  .site-header__nav-item--accent {
    align-self: stretch;
  }

  .site-header__nav-item--accent .site-header__nav-link {
    justify-content: center;
    width: 100%;
    text-align: center;
  }

  .site-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  body.nav-open {
    overflow: hidden;
  }
}

@media (max-width: 480px) {
  .site-header__brand-tagline {
    display: none;
  }
}