.skip-link {
  position: fixed;
  top: var(--space-12);
  left: var(--space-12);
  z-index: 100;
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-small);
  color: var(--color-white);
  background: var(--color-ink);
  transform: translateY(calc(-100% - var(--space-24)));
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  --header-height: 92px;
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(17, 17, 17, 0.05);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(14px);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.site-header.is-scrolled {
  border-color: transparent;
  box-shadow: 0 6px 24px rgba(17, 17, 17, 0.08);
}

.site-header__inner {
  display: flex;
  width: min(calc(100% - 96px), 1280px);
  min-height: var(--header-height);
  margin-inline: auto;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-32);
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  color: var(--color-ink);
}

.brand__logo {
  width: 80px;
  height: auto;
  flex: 0 0 auto;
}

.desktop-nav {
  display: flex;
  min-height: var(--header-height);
  align-items: center;
  gap: 34px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  min-height: var(--header-height);
  align-items: center;
  color: var(--color-ink);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: font-weight 220ms ease;
}

.nav-link::after {
  position: absolute;
  right: 0;
  bottom: 18px;
  left: 0;
  height: 2px;
  background: var(--color-brand);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 220ms ease;
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

.nav-link.is-active {
  font-weight: 700;
}

.nav-link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.header-cta {
  min-width: 154px;
  min-height: 48px;
  margin-left: var(--space-16);
  border-radius: var(--radius-small);
  font-size: 0.8125rem;
}

.mobile-header,
.mobile-menu {
  display: none;
}

.menu-toggle {
  width: 46px;
  height: 46px;
  padding: var(--space-12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin-block: var(--space-4);
  background: var(--color-ink);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(6px) rotate(45deg);
}

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

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-menu {
  border-top: 1px solid var(--color-border);
  background: var(--color-white);
  box-shadow: var(--shadow-medium);
}

.mobile-menu[hidden] {
  display: none;
}

.mobile-menu__inner {
  display: grid;
  gap: var(--space-8);
  padding-block: var(--space-16) var(--space-24);
}

.mobile-nav-link {
  padding: var(--space-12) var(--space-8);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-ink);
  font-family: var(--font-display);
  font-weight: 600;
}

.mobile-nav-link.is-active {
  color: var(--color-brand);
}

.menu-open {
  overflow: hidden;
}

@media (max-width: 1180px) {
  .site-header__inner {
    width: min(calc(100% - 64px), 1280px);
    gap: var(--space-24);
  }

  .desktop-nav {
    gap: var(--space-24);
  }

  .header-cta {
    min-width: 138px;
    margin-left: var(--space-8);
    padding-inline: var(--space-16);
  }
}

@media (max-width: 900px) {
  .desktop-nav {
    gap: var(--space-16);
  }

  .nav-link {
    font-size: 0.75rem;
  }

  .header-cta {
    min-width: 126px;
    margin-left: 0;
    font-size: 0.75rem;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 72px;
  }

  .site-header {
    --header-height: 72px;
  }

  .site-header__inner {
    width: min(calc(100% - 40px), 1280px);
  }

  .desktop-nav {
    display: none;
  }

  .mobile-header,
  .mobile-menu {
    display: block;
  }

}

@media (max-width: 480px) {
  .site-header__inner {
    width: min(calc(100% - 32px), 1280px);
  }
}