/* tb-i18n v1 —— 语言切换器样式（静态页通过 <link> 引入；Halo 页由 globalHead 内联） */
#tb-lang{position:fixed;right:18px;bottom:18px;z-index:9000;display:flex;gap:2px;padding:3px;
  border-radius:999px;background:rgba(15,43,70,.94);border:1px solid rgba(255,255,255,.14);
  box-shadow:0 6px 22px rgba(0,0,0,.34);backdrop-filter:blur(6px);
  font-family:-apple-system,"Segoe UI",Roboto,"Microsoft YaHei",sans-serif}
#tb-lang button{background:none;border:0;cursor:pointer;color:#c7d2de;font-size:12px;font-weight:600;
  letter-spacing:.02em;padding:5px 13px;border-radius:999px;line-height:1.2;
  transition:background .18s,color .18s}
#tb-lang button:hover{color:#fff}
#tb-lang button.on{background:#22c55e;color:#06301d}
@media print{#tb-lang{display:none}}