*{margin:0;padding:0;box-sizing:border-box}#app{width:100%;min-height:100vh;background-color:#f5f5f5}.language-switcher{position:fixed;top:72px;right:20px;z-index:1000;display:flex;gap:8px;background:#fff;padding:4px;border-radius:8px;box-shadow:0 2px 8px #0000001a}.language-switcher button{padding:6px 16px;border:none;background:transparent;color:#666;cursor:pointer;border-radius:6px;font-size:14px;transition:all .3s}.language-switcher button:hover{background:#f5f5f5;color:#333}.language-switcher button.active{background:#667eea;color:#fff}