.site-header {
  position: relative;
  z-index: 30;
  display: flex;
  width: min(1180px, calc(100% - 64px));
  min-height: 92px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
}

.chrome-top.site-header {
  position: fixed;
  top: 0;
  right: auto;
  left: 50%;
  padding: 0;
  transform: translateX(-50%);
}

.site-header .wordmark {
  font-size: 1.12rem;
  letter-spacing: 0.3em;
  white-space: nowrap;
}

.site-header .wordmark::after {
  display: none;
}

.site-header .site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-family: "Noto Serif JP", serif;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
}

.site-header a,
.site-header button {
  pointer-events: auto;
}

.site-header .site-nav a {
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 0.3em;
  transition: color 180ms ease, text-decoration-color 180ms ease;
}

.site-header .site-nav a:hover,
.site-header .site-nav a:focus-visible {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.site-header .readings-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 2px 0;
  border: 0;
  color: var(--muted);
  background: transparent;
  font: inherit;
  letter-spacing: inherit;
  cursor: pointer;
  transition: color 180ms ease;
}

.site-header .readings-toggle::after {
  display: inline-block;
  width: 22px;
  height: 12px;
  border: 1px solid currentColor;
  border-radius: 999px;
  background:
    radial-gradient(circle at 6px 50%, currentColor 0 3px, transparent 3.6px);
  content: "";
  opacity: 0.7;
  transition: opacity 180ms ease;
}

.site-header .readings-toggle:hover,
.site-header .readings-toggle:focus-visible {
  color: var(--accent);
}

.site-header .readings-toggle[aria-pressed="true"]::after {
  background:
    radial-gradient(circle at 16px 50%, #fff 0 3px, transparent 3.6px),
    currentColor;
  opacity: 0.82;
}

@media (max-width: 720px) {
  .site-header {
    width: calc(100% - 40px);
    min-height: 76px;
  }

  .site-header .wordmark {
    font-size: 0.9rem;
    letter-spacing: 0.18em;
  }

  .site-header .site-nav {
    gap: 10px;
    font-size: 0.64rem;
    letter-spacing: 0.05em;
  }
}

@media (max-width: 440px) {
  .site-header {
    justify-content: flex-end;
  }

  .site-header .wordmark {
    display: none;
  }
}