.site-header {
  position: sticky;
  z-index: 1100;
  top: 0;
  width: 100%;
  border-bottom: var(--stroke) solid var(--color-ink);
  background: var(--color-paper);
}

.site-header__inner {
  display: flex;
  min-height: 82px;
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  flex: 0 1 auto;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-ink);
  text-decoration: none;
}

.site-header__logo {
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  object-fit: contain;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.9;
  white-space: nowrap;
}

.site-header__nav {
  min-width: 0;
  flex: 1 1 auto;
}

.site-header__nav-list {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: clamp(0.55rem, 1.1vw, 1.1rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-list li,
.site-header__nav-list li + li {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 0;
}

.site-header__nav-list a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0.15rem 0;
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: clamp(0.63rem, 0.78vw, 0.74rem);
  font-weight: 700;
  letter-spacing: 0.025em;
  line-height: 1.1;
  text-align: center;
  text-decoration-color: var(--color-lime);
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__action {
  display: inline-flex;
  min-height: 44px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  padding: 0.55rem var(--space-3);
  border: var(--stroke) solid var(--color-ink);
  background: var(--color-cyan);
  box-shadow: 4px 4px 0 var(--color-ink);
  color: var(--color-ink);
  font-size: var(--text-small);
  font-weight: 700;
  line-height: 1.1;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.site-header__action:hover {
  background: var(--color-lime);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--color-ink);
}

.nav-toggle {
  display: none;
  width: 48px;
  min-width: 48px;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
  border: var(--stroke) solid var(--color-ink);
  background: var(--color-cyan);
  box-shadow: 4px 4px 0 var(--color-ink);
}

.nav-toggle__line {
  display: block;
  width: 22px;
  height: 3px;
  background: var(--color-ink);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] {
  background: var(--color-lime);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--color-ink);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.site-header__nav-mobile-only,
.site-header__mobile-note {
  display: none;
}

@media (max-width: 1080px) {
  .site-header__inner {
    min-height: 76px;
  }

  .site-header__logo {
    width: 46px;
    height: 46px;
    flex-basis: 46px;
  }

  .site-header__brand-text {
    font-size: 0.92rem;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .site-header__action {
    display: none;
  }

  .site-header__nav {
    position: absolute;
    top: calc(100% + var(--stroke));
    right: 0;
    left: 0;
    display: none;
    width: 100%;
    max-height: calc(100dvh - 76px);
    overflow-y: auto;
    border-bottom: var(--stroke) solid var(--color-ink);
    background: var(--color-paper);
    box-shadow: 0 6px 0 var(--color-ink);
  }

  .site-header__nav.is-open {
    display: block;
  }

  .site-header__nav-list {
    display: grid;
    justify-content: stretch;
    gap: 0;
    padding: var(--space-3) var(--space-4) 0;
  }

  .site-header__nav-list li,
  .site-header__nav-list li + li {
    border-top: var(--stroke) solid var(--color-ink);
  }

  .site-header__nav-list a {
    width: 100%;
    min-height: 52px;
    justify-content: space-between;
    padding: var(--space-3) 0;
    font-size: var(--text-small);
    text-align: left;
    white-space: normal;
  }

  .site-header__nav-mobile-only {
    display: flex;
  }

  .site-header__mobile-note {
    display: grid;
    gap: var(--space-2);
    margin: var(--space-4);
    padding: var(--space-3);
    border: var(--stroke) solid var(--color-ink);
    background: var(--color-lime);
  }

  .site-header__mobile-note span {
    font-family: var(--font-mono);
    font-size: var(--text-label);
    font-weight: 700;
    letter-spacing: var(--tracking-label);
    line-height: 1.2;
  }

  .site-header__mobile-note p {
    margin: 0;
    font-size: var(--text-small);
    font-weight: 600;
    line-height: var(--leading-small);
  }
}

@media (max-width: 767px) {
  .site-header__inner {
    min-height: 68px;
    gap: var(--space-3);
    padding-block: var(--space-2);
  }

  .site-header__logo {
    width: 40px;
    height: 40px;
    flex-basis: 40px;
  }

  .site-header__brand-text {
    font-size: 0.86rem;
  }

  .nav-toggle {
    width: 44px;
    min-width: 44px;
    min-height: 44px;
    box-shadow: var(--shadow-compact);
  }

  .site-header__nav {
    max-height: calc(100dvh - 68px);
    box-shadow: 0 4px 0 var(--color-ink);
  }
}

@media (max-width: 390px) {
  .site-header__brand {
    gap: var(--space-2);
  }

  .site-header__brand-text {
    font-size: 0.77rem;
  }
}

ul { list-style: none !important; }
.nav-toggle { flex-direction: column; }


.nav-toggle{
  display: none !important;
}



@media(max-width: 1080px){
  .nav-toggle{
    display: block !important;
  }
}