.sustainability .contents {
    position: fixed;
    z-index: 10;
    top: 0;
    left: 0;
    display: flex;

    width: 30vw;
    height: 100%;
    padding-top: var(--header-height);

    font-size: 1vw;

    transform: translate3d(-100%, 0, 0);
    transition: all 0.2s;
    opacity: 0;
    will-change: translate, opacity;

    visibility: hidden;
    -webkit-transform: translate3d(-100%, 0, 0);
}

.sustainability .contents a  {
    text-decoration: none;
}

.sustainability .main._contents-open {
    filter: blur(5px);
    user-select: none;
}

.sustainability .contents hr {
    display: none;
}

.sustainability .contents._active {
    transform: translate3d(0, 0, 0);
    opacity: 1;

    visibility: visible;
    -webkit-transform: translate3d(0, 0, 0);
}

.sustainability .contents__inner {
    z-index: 10;

    overflow: scroll;

    height: 100%;

    padding: 6vw 2vw 4vw 4vw;

    color: white;
}

.sustainability .contents__inner::-webkit-scrollbar {
    display: none;
}

.sustainability .contents__inner {
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
}

.sustainability .contents__side {
    position: fixed;
    z-index: 0;

    width: 100vw;
    /*
     Контейнер меню должен иметь фиксированную высоту, чтобы не съезжал,
      поэтому даём значение height в vw с расчётом на то, что соотношение экрана будет максимум 1/3
    */
    aspect-ratio: 1 / 3;
    margin-left: -45vw;

    background: var(--blue);

    transform: skew(10deg);
}

.sustainability .contents__side__inner {
    position: relative;

    width: 100%;
    height: 100%;

    transform: skew(-10deg);

    /*
      .contents__side__inner может быть больше .contents, убираем обработку кликов с него,
        чтобы закрывать меню по нажатию на свободную область
    */
    pointer-events: none;
}

.sustainability .contents-control-btn {
    display: flex;
    justify-content: end;

    width: 3.75vw;
    padding: 1vw 1vw;
    margin-top: 12.5vw;
    margin-left: -0.75vw;
    background-color: var(--contents-bg-color);

    transform: skew(10deg);

    aspect-ratio: 1 / 1.5;
}

.sustainability .contents-btn-close {
    position: fixed;
    right: 21vw;
}

.sustainability .contents-control-btn > * {
    transform: skew(-10deg);
}

.sustainability .contents-control-btn img {
    width: 1.25vw;
}

.sustainability .contents-btn-open {
    position: fixed;
    z-index: 10;

    transition: opacity 0.2s ease-in-out;
    opacity: 1;

    visibility: visible;
}

.sustainability .contents-btn-open._contents-open {
    opacity: 0;
    visibility: hidden;
}

.sustainability .contents__list {
    padding-right: 2vw;
}

.sustainability .contents__list ul li {
    padding: 1vw 2vw;
}

.sustainability .contents__list ul ul {
    display: none;
    margin-top: 1rem;
    margin-left: 1rem;
    padding: 0;
}

.sustainability .contents__list ul ul li {
    padding: 1vw 0;
}

.sustainability .contents__list ul li._active ul {
    display: block;
}

.sustainability .contents__list ul > li._active > a {
    font-weight: bold;
    color: white;
}

.sustainability .contents__list ul li a {
    display: block;
    width: 100%;
    color: white;
}

.sustainability .contents__list ul ul a {
    color: #67C7FD;
}

.sustainability .contents__item {
    position: relative;
}

.sustainability .contents .button-expand {
    width: 2rem;
    height: 2rem;

    position: absolute;
    top: 1vw;
    right: 0;

    text-align: center;
    stroke: #7FC5F8;

    transition: 0.3s;
}

.sustainability .contents .button-expand._active {
    opacity: 0;
    visibility: hidden;
}

.sustainability .contents__dropdown__top {
    display: none;
}

.sustainability .contents._active hr {
    border-color: #F2F2F2;
}

.sustainability .contents__dropdown__title {
    color: var(--text-primary);
    transition: 0.3s;
}

.sustainability .contents._active .contents__dropdown__title {
    color: var(--item-inactive);
}

.sustainability .contents__dropdown__icon {
    display: flex;
    justify-content: center;
    align-items: center;

    width: 16px;
    height: 12px;

    transition: 0.3s;
}

.sustainability .contents__dropdown__icon._active {
    transform: rotate(180deg);
}


@media screen and (max-width: 1280px) {
    .sustainability .contents {
        position: static;
        width: 100%;
        padding-top: 0;
        font-size: 1.5rem;
        transform: none;
        visibility: visible;
        opacity: 1;
    }

    .sustainability .contents__inner {
        width: 100%;

        padding: 2rem 4rem;

        color: var(--text-primary);
    }

    .sustainability .contents__side {
        display: none
    }

    .sustainability .contents hr {
        display: block;
        border: 1px solid #e3e3e3;

        margin: 1rem 0 0;

        transition: 0.3s;
    }

    .sustainability .contents__list {
        display: none;
        padding-right: 2rem;
        padding-left: 2rem;

        margin-top: 2rem;
    }

    .sustainability .contents__list ul {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
        padding-bottom: 1rem;
    }

    .sustainability .contents__list ul li {
        padding: 0 5rem 0 2.5rem;
    }

    .sustainability .contents__list ul li a {
        color: var(--text-primary) !important;
    }

    .sustainability .contents__dropdown__top {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .sustainability .contents__inner._active .contents__dropdown__title {
        color: var(--item-inactive);
    }

    .sustainability .contents__inner._active hr {
        border-color: #F2F2F2;
    }

    .sustainability .contents-control-btn {
        display: none;
    }

    .sustainability .contents .button-expand {
        stroke: var(--darkblue);
    }
}

@media screen and (max-width: 768px) {
    .sustainability .contents__inner {
        padding: 2rem;
    }

    .sustainability .contents__list {
        padding: 0;
    }
}