.sidebar{width:230px;border-right:1px solid var(--border);overflow-y:auto;flex-shrink:0;transition:width var(--ease)}
.sidebar.collapsed{width:0;overflow:hidden}
.side-item{display:flex;align-items:center;gap:10px;padding:9px 16px;font-size:13.5px;color:var(--text2);border-radius:0 20px 20px 0;margin-right:8px;transition:all var(--ease)}
.side-item:hover{background:var(--hover);color:var(--blue)}
.side-item.active{background:var(--hover);color:var(--blue);font-weight:600}
.side-item svg{flex-shrink:0}
.tree-item{padding-left:34px;font-size:13px;display:flex;align-items:center;justify-content:space-between;gap:6px;padding-top:6px;padding-bottom:6px;border-radius:0 20px 20px 0;margin-right:8px;color:var(--text)}
.tree-item:hover{background:var(--hover)}
.tree-item .del-btn{opacity:0;font-size:11px;color:var(--red)}
.tree-item:hover .del-btn{opacity:1}