.tree-group {
    border-bottom: 1px solid var(--line);
}
.tree-group-button {
    display: flex;
    gap: 12px;
    padding: 15px 0;
    border: none;
    background: transparent;
    width: 100%;
    text-align: left;
    font-weight: bold;
}
.tree-mark {
    flex: 0 0 15px;
    height: 15px;
    border: 1px solid #9eaaad;
    position: relative;
    margin-top: 5px;
}
.tree-mark::before, .tree-mark::after {
    content: '';
    position: absolute;
    background: currentColor;
    width: 7px;
    height: 1px;
    top: 6px;
    left: 3px;
}
.tree-mark::after {
    transform: rotate(90deg);
}
[aria-expanded="true"] > .tree-mark::after {
    display: none;
}
.is-loading .tree-mark {
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin .8s linear infinite;
}
.is-loading .tree-mark::before, .is-loading .tree-mark::after {
    display: none;
}
.tree-group ul {
    margin: 0 0 18px 7px;
    padding-left: 20px;
    border-left: 1px solid #d2d9db;
}
.tree-group li a {
    padding: 6px 0;
    display: block;
}
.tree-group a.active {
    color: var(--accent);
    font-weight: bold;
}
.tree-retry {
    color: #9b3528;
    border: 0;
    background: transparent;
    padding: 10px 0;
    text-align: left;
}