.menu-lateral{position:fixed;top:140px;left:20px;width:240px;max-height:calc(100vh - 180px);overflow:auto;background:#fff;padding:14px 16px;border-radius:10px;box-shadow:0 6px 18px rgba(0,0,0,0.08);z-index:9999}.menu-lateral .toc{list-style:none;margin:0;padding:0}.menu-lateral .toc li{margin:8px 0}.menu-lateral .toc a{text-decoration:none}@media (min-width:1200px){.menu-lateral{left:max(20px,calc((100vw - 1140px)/2 - 260px))}}@media (max-width:980px){.menu-lateral{display:none}}