#sidebar-related-posts {
    position: fixed;       /* 固定在页面 */
    top: 100px;            /* 距离顶部 */
    left: 20px;            /* 距离左边 */
    width: 250px;          /* 侧边栏宽度 */
    max-height: 80vh;      /* 避免太长 */
    overflow-y: auto;      /* 内容超出可滚动 */
    padding: 15px;
    border-radius: 12px;
    background: rgba(255,255,255,0.3); /* 半透明毛玻璃背景 */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.4);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    z-index: 9999;         /* 确保在最上层 */
}

#sidebar-related-posts h3 {
    margin-top: 0;
    font-size: 16px;
}

#sidebar-related-posts ul {
    list-style: none;
    padding-left: 0;
}

#sidebar-related-posts li {
    margin-bottom: 8px;
}

#sidebar-related-posts a {
    text-decoration: none;
    color: #007acc;
}

#sidebar-related-posts a:hover {
    text-decoration: underline;
}