.cursorPo {
        cursor: pointer;
        color: #00695c
    }

    .tree {
        --spacing: 1.5rem;
        --radius: 7px;
    }

    .tree li {
        display: block;
        position: relative;
        padding-left: calc(2 * var(--spacing) - var(--radius) - 2px);
        font-size: 16px
    }

    .tree ul {
        margin-left: calc(var(--radius) - var(--spacing));
        padding-left: 0;
    }

    .tree ul li {
        border-left: 2px solid #ffbb33;
    }

    .tree ul li:last-child {
        border-color: transparent;
    }

    .tree ul li::before {
        content: '';
        display: block;
        position: absolute;
        top: calc(var(--spacing) / -2);
        left: -2px;
        width: calc(var(--spacing) + 2px);
        height: calc(var(--spacing) + 1px);
        border: solid #ffbb33;
        border-width: 0 0 2px 2px;
    }

    .tree summary {
        display: block;
        cursor: pointer;
    }

    .tree summary::marker,
    .tree summary::-webkit-details-marker {
        display: none;
    }

    .tree summary:focus {
        outline: none;
    }

    .tree summary:focus-visible {
        outline: 1px dotted #000;
    }

    .tree li::after,
    .tree summary::before {
        content: '';
        display: block;
        position: absolute;
        top: calc(var(--spacing) / 2 - var(--radius));
        left: calc(var(--spacing) - var(--radius) - 1px);
        width: calc(2 * var(--radius));
        height: calc(2 * var(--radius));
        border-radius: 50%;
        background: #ffbb33;
    }

    .tree summary::before {
        content: '+';
        z-index: 1;
        background: #696;
        color: #fff;
        line-height: calc(2 * var(--radius) - 2px);
        text-align: center;
    }

    .tree details[open]>summary::before {
        content: '−';
    }