/* 多语言切换按钮 (lang-switch) */
.lang-switch{position:relative;display:inline-block;margin-left:14px;vertical-align:middle}
.lang-btn{display:inline-flex;align-items:center;gap:4px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.4);color:#fff;border-radius:16px;padding:3px 12px;font-size:13px;cursor:pointer;line-height:1.4;font-family:inherit}
.lang-btn:hover{background:rgba(255,255,255,.24)}
.lang-switch .caret{font-size:10px;margin-left:2px}
.lang-menu{display:none;position:absolute;right:0;top:130%;min-width:120px;background:#fff;border:1px solid #e3e3e3;border-radius:8px;box-shadow:0 6px 20px rgba(0,0,0,.14);padding:6px 0;z-index:9999;list-style:none;margin:0}
.lang-menu.open{display:block}
.lang-menu li{padding:8px 16px;font-size:13px;color:#333;cursor:pointer;white-space:nowrap}
.lang-menu li:hover{background:#f5f7fa;color:#c8102e}
@media(max-width:768px){.lang-switch{margin-left:8px}.lang-btn{padding:2px 9px;font-size:12px}}