/* Selector de idioma: discreto, abajo a la izquierda (el botón de WhatsApp ocupa la derecha). */
.lang-switch {
  position: fixed;
  left: 14px;
  bottom: 14px;
  z-index: 60;
  display: flex;
  gap: 2px;
  padding: 3px;
  border-radius: 999px;
  background: rgba(7, 16, 28, 0.92);
  box-shadow: 0 2px 10px rgba(7, 16, 28, 0.18);
  font: 500 12px/1 "JetBrains Mono", ui-monospace, monospace;
  letter-spacing: 0.04em;
}
.lang-switch a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
  padding: 7px 9px;
  border-radius: 999px;
  min-width: 32px;
  text-align: center;
}
.lang-switch a:hover,
.lang-switch a:focus-visible {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  outline: none;
}
.lang-switch a:focus-visible {
  box-shadow: 0 0 0 2px #fff;
}
.lang-switch a[aria-current="true"] {
  color: #07101c;
  background: #fff;
}
html[lang="zh-Hans"] body {
  font-family: Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
@media print {
  .lang-switch { display: none; }
}