#menu-sidebar {
    width: 240px;
    height: 100vh;
    background: #2c3e50;
    position: fixed;
    left: 0;
    top: 0;
    color: white;
    display: flex;
    flex-direction: column; /* 让 Logo 固定，列表滚动 */
    overflow-y: auto;      /* 当内容超出高度时允许滚动 */
    overflow-x: hidden;    /* 防止水平抖动 */
}

#menu-sidebar::-webkit-scrollbar {
    width: 6px;
}

#menu-sidebar::-webkit-scrollbar-thumb {
    background: #465e75; /* 滚动条滑块颜色 */
    border-radius: 10px;
}

#menu-sidebar::-webkit-scrollbar-track {
    background: #2c3e50; /* 滚动条轨道颜色 */
}

.menu-logo {
    padding: 20px;
    font-size: 20px;
    font-weight: bold;
    text-align: center;
    border-bottom: 1px solid #34495e;
}

.menu-list {
    list-style: none;
    padding: 0;
}

.menu-item a {
    display: block;
    padding: 15px 25px;
    color: #bdc3c7;
    text-decoration: none;
    transition: 0.3s;
}

.menu-item.menu-active a {
    background: #3498db;
    color: white;
}

.menu-item:hover a {
    background: #34495e;
}