.selector-container {
    position: fixed;
    right: 0px;
    top: 0px; /* 从右上角下移20px */
    transform: none; /* 移除垂直居中 */
    z-index: 1000;
}

.trigger-btn {
    /* 保持原有样式 */
    padding: 10px 10px;
    background: #4a90e2;
    color: white;
    border: none;
    border-radius: 0px 0 0 22px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: -4px 0 6px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    writing-mode: vertical-rl;
    text-orientation: mixed;
}

   .trigger-btn:hover {
            background: #3b82f6;
            transform: translateY(-2px);
            box-shadow: 0 6px 8px rgba(0,0,0,0.15);
        }
        
        .language-menu {
            position: absolute;
            bottom: -10px;
            left: -140px;
            transform: translateY(100%);
            width: 180px;
            background: #2aabee;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            padding: 10px 0;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 100;
        }
        
        .language-menu.show {
            opacity: 1;
            visibility: visible;
            bottom: -15px;
        }
        
        .language-menu ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .language-menu li {
            padding: 8px 20px;
            transition: background 0.2s;
        }
        
        .language-menu li:hover {
            background: #f5f5f5;
        }
        
        .language-menu a {
            text-decoration: none;
            color: #333;
            font-size: 14px;
            display: block;
        }