.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(22px);
  background: linear-gradient(120deg, rgba(5, 5, 9, 0.96), rgba(15, 16, 22, 0.96));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-12);
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

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

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  color: var(--color-text);
}

.site-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 0, #ffe9b0 0, #f4c15c 36%, #8b3c19 100%);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.06), 0 12px 28px rgba(0, 0, 0, 0.8);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.site-header__chip {
  width: 70%;
  height: 70%;
  border-radius: 50%;
  border: 2px solid rgba(5, 5, 9, 0.9);
  box-shadow: inset 0 0 0 2px rgba(5, 5, 9, 0.85);
}

.site-header__title-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-header__site-name {
  font-family: var(--font-display);
  font-size: var(--font-size-md);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-header__tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.site-header__nav {
  display: flex;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.site-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: 0.4rem 0.1rem;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.25rem;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, rgba(244, 193, 92, 0.1), rgba(244, 193, 92, 0.9), rgba(244, 193, 92, 0.1));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-medium);
}

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

.site-header__nav-link--cta {
  padding: 0.55rem 1.3rem;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle at 20% 0, #fff9e4 0, #f4c15c 40%, #c3891f 100%);
  color: #1c1205;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.9);
}

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

.site-header__nav-link--cta:hover,
.site-header__nav-link--cta:focus-visible {
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.95);
}

.site-header__nav-item--cta {
  margin-left: var(--space-8);
}

/* Mobile toggle */

.site-header__toggle {
  display: inline-flex;
  margin-left: auto;
}

.site-header__toggle-bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 22px;
  height: 22px;
}

.site-header__toggle-bars span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-medium), opacity var(--transition-medium), background var(--transition-medium);
}

.site-header__toggle.is-active .site-header__toggle-bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header__toggle.is-active .site-header__toggle-bars span:nth-child(2) {
  opacity: 0;
}

.site-header__toggle.is-active .site-header__toggle-bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Small screens: nav overlay */

@media (max-width: 768px) {
  .site-header__nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 64px;
    background: radial-gradient(circle at top, rgba(244, 193, 92, 0.12), transparent 60%), var(--color-surface-elevated);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-slow), opacity var(--transition-medium), visibility var(--transition-medium);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-20) var(--space-16) var(--space-16);
    gap: var(--space-10);
  }

  .site-header__nav-item--cta {
    width: 100%;
    margin-left: 0;
  }

  .site-header__nav-link--cta {
    display: inline-flex;
    width: 100%;
    justify-content: center;
  }

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

/* Larger screens */

@media (min-width: 769px) {
  .site-header__toggle {
    display: none;
  }
}

/* Notice bar */

.site-header__notice {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  background: radial-gradient(circle at left, rgba(244, 193, 92, 0.12), transparent 55%), radial-gradient(circle at right, rgba(163, 39, 78, 0.24), transparent 55%), #050509;
}

.site-header__notice-inner {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.site-header__notice-inner p {
  margin-top: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

@media (max-width: 640px) {
  .site-header__title-group {
    display: none;
  }

  .site-header__notice-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}