.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  background: color-mix(in srgb, var(--color-cream) 80%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 400ms ease, background 400ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: color-mix(in srgb, var(--color-stone) 70%, transparent);
}

.brand {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  line-height: 1;
}

.brand:hover {
  opacity: 1;
  color: var(--color-ink);
}

.nav-toggle {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: -0.5rem;
}

.nav-toggle-bars {
  position: relative;
  width: 1.1rem;
  height: 1px;
  background: var(--color-ink);
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-ink);
  transition: transform 250ms var(--ease-out);
}

.nav-toggle-bars::before {
  top: -5px;
}

.nav-toggle-bars::after {
  top: 5px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
  transform: translateY(-5px) rotate(-45deg);
}

.site-nav {
  position: fixed;
  inset: var(--nav-height) 0 auto;
  background: var(--color-cream);
  border-bottom: 1px solid var(--color-stone);
  padding: var(--space-5) var(--space-4) var(--space-6);
  display: none;
  flex-direction: column;
  gap: var(--space-3);
}

.site-nav.is-open {
  display: flex;
}

.site-nav a {
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: color 200ms ease;
}

.site-nav a:hover {
  color: var(--color-accent);
  opacity: 1;
}

@media (min-width: 768px) {
  .site-header {
    padding: 0 var(--space-7);
  }

  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-6);
    padding: 0;
    background: transparent;
    border: none;
  }

  .site-nav a {
    min-height: auto;
  }
}

.section {
  padding: var(--space-8) var(--space-4);
}

.section-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.section-label {
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.section-label::before {
  content: "";
  width: 1.25rem;
  height: 2px;
  background: var(--color-accent);
  flex-shrink: 0;
}

.section-title {
  font-size: var(--text-2xl);
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: var(--space-5);
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-10) var(--space-7);
  }
}

.site-footer {
  padding: var(--space-6) var(--space-4) var(--space-8);
  border-top: 1px solid var(--color-stone);
  color: var(--color-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer .section-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

@media (min-width: 768px) {
  .site-footer {
    padding: var(--space-7);
  }

  .site-footer .section-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}