/* Language toggle pill */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-right: 18px;
  padding: 6px 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
}
.lang-toggle button {
  background: none;
  border: 0;
  cursor: pointer;
  font: inherit;
  letter-spacing: inherit;
  color: var(--muted);
  padding: 2px 6px;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease;
}
.lang-toggle button[lang="zh-HK"] {
  font-family: 'Noto Sans HK', 'PingFang HK', 'Microsoft JhengHei', sans-serif;
  letter-spacing: 0;
  font-size: 13px;
  line-height: 1;
}
.lang-toggle button:hover { color: var(--ink); }
.lang-toggle button.active {
  color: var(--paper);
  background: var(--ink);
}
.lang-toggle .lang-sep {
  color: var(--rule);
  user-select: none;
}

/* Slightly tighter Chinese rendering */
html[data-lang="zh"] {
  font-feature-settings: 'kern';
}
html[data-lang="zh"] body,
html[data-lang="zh"] .lead,
html[data-lang="zh"] p,
html[data-lang="zh"] h1,
html[data-lang="zh"] h2,
html[data-lang="zh"] h3,
html[data-lang="zh"] h4 {
  font-family: 'Noto Sans HK', 'PingFang HK', 'Microsoft JhengHei', 'Inter', system-ui, sans-serif;
}
html[data-lang="zh"] .italic-accent {
  font-style: normal;
  font-weight: 400;
}

@media (max-width: 720px) {
  .lang-toggle { margin-right: 10px; padding: 4px 8px; }
}