.node__nav {
    position: fixed;
    top: 20%;
    opacity: 0;
    left: 50px;
    width: 200px;
    z-index: 50;
}

.node__nav.show {
    opacity: 1;
}

@media screen and (max-width: 1919px) {
    .node__nav {
        left: 20px;
    }
}

@media screen and (max-width: 1439px) {
    .node__nav {
        width: 175px;
    }
}

@media screen and (max-width: 1279px) {
    .node__nav {
        display: none !important;
    }
}

.node__nav.hidden {
    opacity: 0;
}

.node__nav a {
    color: var(--dark-blue);
    text-decoration: none;
    position: relative;
    padding-left: 15px;
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.node__nav a::before {
    position: absolute;
    content: '';
    height: 9px;
    width: 9px;
    left: 0;
    border: 1px solid var(--dark-grey);
    border-radius: 50%;
}

.node__nav.bg_blue a {
    color: var(--white);
}

.node__nav a.active {
    font-weight: bold;
}

.node__nav a.active::before {
    background-color: var(--dark-blue);
    border: 1px solid var(--dark-blue);
}

.node__nav.bg_blue a::before {
    border: 1px solid var(--white);
}

.node__nav.bg_blue a.active::before {
    background-color: var(--white);
}

.node__nav .expo_section {
    display: none;
    margin-left: 20px;
}

.node__nav .expo_section a {
    font-size: 13px;
    opacity: 0.6;
    margin-bottom: 5px;
}

.node__nav .expo_section a.active {
    opacity: 1;
}

.node__nav .expo_section a::before {
    height: 5px;
    width: 5px;
    background-color: var(--black);
}

.node__nav .expo_section.show {
    display: block;
}