:root {
  --calder-background: #ffffff;
  --calder-surface: #f6f5f2;
  --calder-text: #171717;
  --calder-muted: #656565;
  --calder-border: #d8d6d0;
  --calder-accent: #171717;
  --calder-content-width: 78rem;
  --calder-reading-width: 48rem;
}

body.calder-shop {
  color: var(--calder-text);
  background: var(--calder-background);
}

header[role="banner"] {
  padding-block: clamp(1.25rem, 3vw, 2.25rem);
  background: var(--calder-background);
  border-bottom: 0;
}

.region-header,
.region-primary-menu {
  display: flex;
  align-items: center;
}

.region-header {
  justify-content: space-between;
}

.site-branding__name {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.01em;
}

.site-branding__name a {
  color: inherit;
  text-decoration: none;
}

.region-primary-menu {
  padding-block: 0 1.25rem;
  border-bottom: 1px solid var(--calder-border);
}

.region-primary-menu nav {
  width: 100%;
}

.region-primary-menu nav ul {
  gap: 0.8rem clamp(1rem, 3vw, 2.25rem);
}

.region-primary-menu nav a {
  display: inline-block;
  padding-block: 0.35rem;
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.region-primary-menu nav a:hover,
.region-primary-menu nav a:focus-visible,
.region-primary-menu nav a.is-active {
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.3em;
}

.region-content {
  padding-block: clamp(2.5rem, 7vw, 6.5rem);
}

.page-title {
  max-width: var(--calder-reading-width);
  font-weight: 400;
}

.region-footer {
  margin-top: clamp(3rem, 8vw, 7rem);
  padding-block: 1.5rem 2.5rem;
  color: var(--calder-muted);
  border-top: 1px solid var(--calder-border);
  font-size: 0.9rem;
}

.region-footer a {
  color: inherit;
}

@media (max-width: 42rem) {
  header[role="banner"] {
    padding-block: 1rem;
  }

  .region-header,
  .region-primary-menu {
    align-items: flex-start;
  }

  .region-primary-menu nav ul {
    gap: 0.5rem 1rem;
  }

  .region-primary-menu nav a {
    font-size: 0.82rem;
  }
}