.glc-control {
    font: 14px/1.3 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 6px 18px rgba(0,0,0,.15);
    overflow: hidden;
    min-width: 220px;
}
.glc-header {
    display:flex; align-items:center; justify-content:space-between;
    background:#f6f7fb; padding:10px 12px; border-bottom:1px solid #e7e9f3;
    font-weight:600;
}
.glc-title { margin:0; font-size:14px; }
.glc-toggle { cursor:pointer; font-size:12px; color:#4a4f63; user-select:none; }
.glc-body { max-height: 320px; overflow:auto; padding:8px 0; }
.glc-group,
.glc-leaf {
    padding: 6px 12px;
}
.glc-row {
    display:flex; align-items:center; gap:8px;
}
.glc-row input[type="checkbox"] {
    width:16px; height:16px; cursor:pointer;
}
.glc-name {
    flex:1 1 auto; user-select:none;
}
.glc-group-header {
    font-weight:600;
}
.glc-children {
    margin-left: 22px;
    margin-top: 6px;
    border-left: 1px dashed #e3e5ee;
    padding-left: 12px;
}
.glc-actions {
    display:flex; gap:8px; margin-left:auto; opacity:.8;
}
.glc-action {
    border:0; background:#f2f4fa; padding:2px 8px; border-radius:999px; font-size:12px; cursor:pointer;
}
.glc-collapse {
    cursor:pointer; font-size:18px; line-height:1;
    width:22px; height:22px; display:flex; align-items:center; justify-content:center;
    border-radius:6px; background:#f2f4fa; color:#4a4f63;
}
.glc-collapse:hover { background:#e7eaf6; }
.glc-muted { color:#7a7f92; font-weight:500; }