.section-nav {
    position: relative;
    margin-top: -100px;
}

.section-nav .nav-box {
    background-color: var(--tateru-color-secondary);
    color: var(--tateru-color-white);
    display: flex;
    position: relative;
    z-index: 1;
}

.section-nav .headline-box {
    width: 50%;
    padding: 35px;
}

.section-nav .h5-style {
    margin-bottom: 50px;
}

.section-nav .link-boxes {
    display: flex;
    width: 50%;
    position: relative;
    right: -1px;
}

.link-boxes .link-box {
    display: block;
    background-color: var(--tateru-color-primary);
    width: calc( 100% / 3 );
    color: var(--tateru-color-white);
    padding: 35px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.link-boxes > .link-box:nth-child(2) {
    background-color: var(--tateru-color-primary-light);
}

.link-boxes > .link-box:nth-child(3) {
    background-color: var(--tateru-color-primary-even-lighter);
}

.link-boxes .link-box .box-button {
    font-size: 18px;
    text-box-trim: trim-both;
    text-box-edge: cap alphabetic;
    padding-bottom: 15px;
    border-bottom: #4068a8 var(--tateru-line-width) solid;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.link-boxes .link-box .box-button::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -1px;
    height: var(--tateru-line-width);
    width: 0%;
    background-color: var(--tateru-color-secondary);
    transition: width 500ms;
    transition-timing-function: cubic-bezier(0.83, 0, 0.17, 1);
}



.link-boxes .link-box:hover {
    color: var(--tateru-color-white);
    text-decoration: none;
}

.link-boxes .link-box:hover .box-button::after {
    width: 100%;
}

.link-boxes .link-box .box-button img {
    height: var(--tateru-arrow-height);
    width: var(--tateru-arrow-width);
}

.section-nav .h5-style,
.section-nav .h2-style {
    color: var(--tateru-color-white);
}


@media screen and (max-width: 1400px) {
    .section-nav .h2-style br {
        display: none;
    }
}

@media screen and (max-width: 1300px) {
    .section-nav .nav-box {
        flex-direction: column;
    }

    .section-nav .headline-box {
        width: 100%;
    }

    .section-nav .link-boxes {
        right: 0;
        width: 100%;
    }
}

@media screen and (max-width: 700px) {
    .section-nav .link-boxes {
        flex-direction: column;
    }

    .section-nav .link-boxes .link-box {
        width: 100%;
    }
}