*{box-sizing:border-box}body{margin:0;color:#000;background:#fff}.layout{display:flex;min-height:100vh}.sidebar{width:180px;flex-shrink:0;background:#e6f4ea;border-right:1px solid #000;padding:1rem;display:flex;flex-direction:column;gap:.5rem}.sidebar a{text-decoration:none;color:#000}.sidebar a:hover,.sidebar a.active{text-decoration:underline}.content{flex:1;padding:1.5rem 2rem;max-width:700px}ul{padding-left:1.2rem}