.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  width: 100%;
  height: var(--header-height);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-bg);
}

.site-header__inner {
  position: relative;
  display: grid;
  height: 100%;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
}

.site-header__desktop-nav {
  min-width: 0;
}

.site-header__desktop-nav--end {
  justify-self: end;
}

.site-header__list,
.site-header__mobile-list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__list {
  align-items: center;
  gap: clamp(0.5rem, 1.3vw, 1.25rem);
}

.site-header__list li,
.site-header__mobile-list li {
  margin: 0;
  padding: 0;
}

.site-header__link {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--color-text-secondary);
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__link::before {
  width: 0;
  height: 0.3125rem;
  margin-right: 0;
  background: var(--color-orange);
  content: "";
  transition: width var(--transition-fast), margin var(--transition-fast);
}

.site-header__link:hover::before,
.site-header__link[aria-current="page"]::before {
  width: 0.3125rem;
  margin-right: 0.375rem;
}

.site-header__link[aria-current="page"] {
  color: var(--color-orange);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  justify-self: center;
  gap: 0.625rem;
  color: var(--color-text);
}

.site-header__brand:hover {
  color: var(--color-text);
}

.site-header__logo {
  width: 2.125rem;
  height: 2.125rem;
  flex: 0 0 2.125rem;
  object-fit: contain;
}

.site-header__brand-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.045em;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  width: 2.75rem;
  min-width: 2.75rem;
  height: 2.75rem;
  align-items: center;
  justify-content: center;
  justify-self: end;
  padding: 0;
  border: 1px solid var(--color-line);
  background: var(--color-module);
}

.site-header__toggle-line {
  position: absolute;
  width: 1.125rem;
  height: 1px;
  background: var(--color-text);
  transition: transform var(--transition-fast), background-color var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle-line:nth-child(1) { transform: translateY(-0.375rem); }
.site-header__toggle-line:nth-child(2) { transform: translateY(0); }
.site-header__toggle-line:nth-child(3) { transform: translateY(0.375rem); }

.site-header__toggle[aria-expanded="true"] {
  border-color: var(--color-orange);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) { transform: rotate(45deg); background: var(--color-orange); }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2) { opacity: 0; }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) { transform: rotate(-45deg); background: var(--color-orange); }

.site-header__mobile-nav {
  position: fixed;
  z-index: 99;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  left: 0;
  display: none;
  overflow-y: auto;
  border-top: 1px solid var(--color-line);
  background: var(--color-module);
}

.site-header__mobile-nav.is-open {
  display: block;
}

.site-header__mobile-panel {
  width: min(100%, 42rem);
  min-height: 100%;
  margin-left: auto;
  padding: clamp(1.5rem, 6vw, 4rem) var(--container-padding);
  border-left: 1px solid var(--color-line);
}

.site-header__mobile-label {
  margin: 0 0 var(--space-5);
  color: var(--color-orange);
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: var(--leading-label);
  text-transform: uppercase;
}

.site-header__mobile-list {
  flex-direction: column;
  border-top: 1px solid var(--color-line);
}

.site-header__mobile-list li {
  border-bottom: 1px solid var(--color-line);
}

.site-header__mobile-list a {
  display: flex;
  min-height: 3.5rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 5vw, 1.875rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  text-transform: uppercase;
}

.site-header__mobile-list a::after {
  color: var(--color-orange);
  content: "→";
}

body.site-header-menu-open {
  overflow: hidden;
}

@media (max-width: 60rem) {
  .site-header__desktop-nav { display: none; }
  .site-header__inner { grid-template-columns: 1fr auto 1fr; }
  .site-header__toggle { display: inline-flex; position: relative; }
}

@media (max-width: 45rem) {
  .site-header__logo { width: 1.875rem; height: 1.875rem; flex-basis: 1.875rem; }
  .site-header__brand { gap: 0.5rem; }
  .site-header__brand-text { font-size: 1rem; }
  .site-header__mobile-panel { border-left: 0; }
}