.horizontal-menu-wrap {
    display: flex;
    flex-flow: row;
    margin-bottom: 2rem;
    justify-content: space-between;
}

.horizontal-menu-wrap-inner {
    display: block;
    width: 100%;
}

.horizontal-menu {
    width: 100%;
    display: flex;
    align-items: stretch;
    flex-flow: row nowrap;
    min-height: 5rem;
    border: 1px solid #D3DEE1;
    background: #fff;
}

.horizontal-menu-mobile {
    display: none;
    width: 100%;
    align-items: stretch;
    min-height: 5rem;
    border: 1px solid #D3DEE1;
    background: #fff;
}

.horizontal-menu > *, .horizontal-menu-mobile > * {
    position: relative;
    display: flex;
    flex-flow: row nowrap;
    flex-grow: 1;
    align-items: center;
    justify-content: center;
    margin: 0.5rem 0;
    padding: 0 1.6rem;
    border-left: 1px solid transparent;
    font: 500 1.4rem/1.9rem Roboto;
    text-align: center;
}

.horizontal-menu > .selected {
    margin: 0;
    padding: 0 1.6rem;
    background-color: #007399;
    border-color: #007399 !important;
    color: #ffffff;
}

.horizontal-menu > *:hover, .horizontal-menu-mobile > *:hover {
    margin: 0;
    padding: 0 1.6rem;
    background-color: #fff;
    border-color: #fff !important;
    color: var(--main-text-color);
    box-shadow: var(--common-shadow);
}

.horizontal-menu > *:not(.selected):not(:hover) + * {
    border-color: #D3DEE1;
}

.horizontal-menu > .dropdown > .drop-trigger {
    position: relative;
    z-index: 1;
    width: 100%;
    display: flex;
    flex-flow: row nowrap;
    justify-content: center;
    align-items: center;
    color: inherit;
    font: inherit;
}

.horizontal-menu > .dropdown > .drop-trigger:after {
    content: '';
    margin-left: 1.5rem;
    border: .5rem solid transparent;
    border-top-color: #819DB9;
    border-bottom: 0;
}

.horizontal-menu > .selected:not(:hover) .drop-trigger:after {
    border-top-color: #ffffff;
}

.horizontal-menu > .dropdown > .drop-content {
    position: absolute;
    display: none;
    flex-flow: column nowrap;
    align-items: flex-start;
    gap: 1.5rem;
    left: 0;
    top: 100%;
    z-index: 2;
    width: 100%;
    padding: 1rem;
    margin-left: 0;
    background: #fff;
    box-shadow: var(--common-shadow);
    list-style-type: none;
}

.horizontal-menu > .dropdown > .drop-content > li > * {
    position: relative;
    font: 700 1.4rem/1.8rem Roboto;
    color: #007399;
    text-align: left;
    min-width: 6rem;
    display: flex;
}

.horizontal-menu > .dropdown > .drop-content > li > *:before {
    content: '';
    flex-shrink: 0;
    float: left;
    width: 1.2rem;
    height: 1.6rem;
    background: url('/i/drop-bullet.svg') no-repeat left center;
}

.horizontal-menu > span > .share > a:before {
    background: none;
    margin-left: 1.2rem;
}

.horizontal-menu > .dropdown:focus-within > .drop-content {
    display: flex;
}

.icon-twitter {
    background: url('/i/icon-twitter.svg') no-repeat left center;
}

.icon-email {
    background: url('/i/icon-email.svg') no-repeat left center;
}

.icon-facebook {
    background: url('/i/icon-facebook.svg') no-repeat left center;
}

.icon-linkedin {
    background: url('/i/icon-linkedin.svg') no-repeat left center;
}

.horizontal-menu > .dropdown:hover > .drop-content {
    display: flex;
}
.horizontal-menu > .dropdown:hover > .drop-trigger:after {
    transform: rotate(180deg);
}

.alphabet {
    display: flex;
}

.journals-alphabet {
    padding: 0 3.6rem;
    background: #fff;
}

.journals-alphabet-mobile {
    display: none;
}

.books-overlap {
    padding: 0 8rem;
    background: #fff;
}

.books-overlap > * + * {
    margin-top: var(--small-gap);
}

.books-filters {
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 3.4rem 2rem 4.3rem;
    background: #007399;
}

.books-filters > div {
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
    align-items: center;
    white-space: nowrap;

    margin-right: 4.6rem;

    font: 400 1.6rem/3.8rem Roboto;
    color: #fff;
}

.books-filters > div > * + * {
    margin-left: 3rem;
}

.alphabet > * {
    display: flex;
    flex-flow: row wrap;
    flex-grow: 1;
    width: 100%;
    text-align: center;
    align-items: center;
    justify-content: center;
    font: 400 2rem/3.8rem Roboto;
    color: #B8C3C6;
}

.alphabet > a {
    color: #243C50;
}

.alphabet > .selected {
    font: 700 2.4rem/3.8rem Roboto;
    color: #243C50;
}

.alphabet > * + * {
    border-left: 1px solid #B8C3C6;
}

.gain-access {
    white-space: nowrap;
    margin-right: 1rem;
    min-height: 5rem;
    display: flex;
    align-items: center;
    border-left: 4px solid #819DB9;
    padding: 0 1.2rem 0 1.5rem;
    font: 500 1.4rem/1.9rem Roboto;
    background: #FFFFFF;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    color: #525258;
    align-self: end;
}

.gain-access:after {
    content: '';
    padding-left:4rem;
    background: url("/i/arrow-gain-access.svg") no-repeat right center;
    height: 1.5rem;
}

@media (max-width: 1439px) {
    .alphabet > * {
        font-size: 2.2rem;
        line-height: 3.6rem;
    }

    .alphabet > .selected {
        font-size: 2.6rem;
    }

    .journals-alphabet-mobile {
        display: none;
    }
}

@media (max-width: 1023px) {
    .alphabet {
        overflow: hidden;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(6vw, 1fr));
        grid-gap: 1rem 0;
        padding: 2rem 0;
    }
    .alphabet > * {
        margin-left: -1px;
    }

    .journals-alphabet-mobile {
        display: none;
    }
}

@media (max-width: 767px) {
    .horizontal-menu {
        display: none;
        border-top: transparent;
    }

    .horizontal-menu > a, .horizontal-menu > a:hover {
        padding-left: 2rem;
        display: grid;
        justify-content: flex-start;
        align-items: center;
        text-align: left;
    }

    .horizontal-menu-wrap-inner {
        display: flex;
        flex-flow: column;
        position: relative;
        flex-basis: 50%;
    }

    .horizontal-menu-wrap-inner:hover > .horizontal-menu {
        display: flex;
        flex-flow: column;
        position: absolute;
        top: 5rem;
    }

    .horizontal-menu-mobile {
        display: flex;
    }

    .horizontal-menu > * {
        font: 500 1.4rem/1.8rem Roboto;
        margin: 0;
        padding: 1rem 0;
        flex-basis: 45%;
        border-left: transparent;
        justify-content: flex-start;
        min-height: 5rem;
        text-align: left;
    }

    .horizontal-menu > *:not(:last-child):before {
        content: '';
        position: absolute;
        bottom: 0;
        width: 100%;
        border-bottom: 1px solid #D3DEE1;
    }

    .horizontal-menu > .selected {
        margin: 0;
        padding: 1rem 2rem 1rem 0;
    }

    .horizontal-menu > a.selected {
        padding: 1rem 2rem;
    }

    .horizontal-menu > *:hover {
        margin: 0;
        padding: 1rem 0;
        flex-flow: column;
        align-items: flex-start;
        justify-content: center;
        /*box-shadow: none;*/
        border-color: #D3DEE1 !important;
        background-color: transparent;
    }

    .horizontal-menu > .dropdown > .drop-trigger, .horizontal-menu > span a {
        justify-content: end;
        padding-left: 2rem;
    }

    .horizontal-menu > .dropdown > .drop-trigger:after {
        margin: 0 1.5rem;
    }

    .horizontal-menu > .dropdown > .drop-content {
        position: static;
        box-shadow: none;
        padding-bottom: 0;
        padding-top: 1rem;
    }

    .alphabet {
        grid-template-columns: repeat(auto-fit, minmax(4.5rem, 1fr));
        grid-gap: 2rem 0;
        padding: 2rem 0;
    }
    .alphabet > * {
        font-size: 1.2rem;
        line-height: 1.7rem;
    }

    .alphabet > .selected {
        font-size: 1.4rem;
        line-height: 1.7rem;
    }

    .journals-alphabet{
        display: none;
    }

    .journals-alphabet-mobile {
        display: grid;
        grid-template-columns: 1fr;
        width: 3.5rem;
        grid-gap: 0.2rem 0;
    }

    .books-overlap {
        padding: 1.3rem;
        background: #fff;
    }

    .books-filters {
        display: flex;
        flex-flow: column nowrap;
        justify-content: space-between;
        align-items: flex-start;
        padding: 1.3rem;
    }

    .books-filters > div {
        flex-flow: column nowrap;
        align-items: flex-start;
        margin-bottom: 1rem;
    }
}