@charset "utf-8";
/*==========================
header
==========================*/
.nav__item:nth-of-type(2) {
    color: var(--primary-skyBlue);
    position: relative;
}

.nav__item:nth-of-type(2)::before {
    content: '';
    display: inline-block;
    width: 24%;
    height: 1px;
    background-color: var(--primary-skyBlue);
    position: absolute;
    top: 50%;
    transform: translateY(-50%); 
}

/* header pc */
@media screen and (min-width:769px) {
    .nav__item:nth-of-type(2) a {
        text-decoration: underline var(--primary-skyBlue);
        text-underline-offset:5px;
    }

    .nav__item:nth-of-type(2)::before {
        display: none;
    }
}/* pc 769px */

/*==========================
explain
==========================*/
.topic--explain {
    line-height: 1.7;
}

.mainCaption__txt--explain {
    margin-top: 30px;
}

/* explain pc */
@media screen and (min-width:769px) {
    .mainCaption__txt--explain {
        margin-top: 50px;
    }
}/* pc 769px */

/*==========================
content
==========================*/
.section--content {
    background-image: url(../images/bg_sp.svg);
    background-size: auto 100%;
    background-position: center;
    background-repeat: no-repeat;
    padding: 50px 0 90px;
}

.topic--content {
    color: var(--primary-blue);
    font-size: 3.2rem;
    font-weight: 700;
    text-align: center;
    margin-top: 40px;
}

.processing__txt {
    margin-top: 30px;
}

.border {
    font-weight: 600;
    /* text-decoration:underline ; */
    border-bottom: solid 1px;
}

.processing__txt:nth-of-type(2) {
    margin-top: 25px;
}

.construction {
    margin-top: 60px;
}

.construction__txt {
    margin-top: 40px;
}

/* content pc */
@media screen and (min-width:769px) {
    .section--content {
        padding: 80px 0 150px;
        background-image: url(../images/bg_pc.svg);
    }

    .processing,
    .construction {
        display: flex;
        align-items: center;
    }

    .processing__img,
    .construction__img {
        width: 50%;
    }

    .topic--content {
        color: var(--primary-blue);
        font-size: 6.4rem;
        margin-top: 0;
    }

    .processing__txt,
    .construction__txt {
        width: 70%;
        margin-top: 80px;
    }

    .processing__txt:nth-of-type(2) {
        margin-top: 50px;
    }

    .construction {
        flex-direction: row-reverse;
        margin-top: 100px;
    }

    .btn--works {
        margin-top: 100px;
    }
}/* pc 769px */

/*==========================
column
==========================*/
.section--column {
    margin-top: 0;
    padding: 60px 8%;
    background-image: url(../images/bg_box_sp.svg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.column__item {
    width: 79%;
    margin: 0 auto;
}

.column__name {
    color: var(--primary-white);
    font-size: 1.6rem;
    font-weight: 400;
    text-align: end;
    margin-top: 10px;
}

.topic--column {
    color: var(--primary-white);
    font-size: 2rem;
    font-weight: 700;
    margin-top: 40px;
}

.column__txt {
    color: var(--primary-white);
    font-size: 1.6rem;
    font-weight: 400;
    line-height: 1.7;
    margin-top: 30px;
}

.column__txt:last-of-type {
    margin-top: 20px;
}

/* column pc */
@media screen and (min-width:769px) {
    .section--column {
        background-image: url(../images/bg_box_pc.svg);
        background-position: right 0 bottom 0;
        padding: 80px 7.6%;
    }

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

    .column__item {
        width: 20.5%;
    }

    .column__name {
        font-size: 2rem;
    }

    .topic--column {
        font-size: 3.2rem;
        margin-top: 80px;
    }

    .column__txt {
        font-size: 2rem;
        margin-top: 50px;
    }

    .column__txt:last-of-type {
        margin-top: 30px;
    }
}/* pc 769px */

/*==========================
footer
==========================*/
.footerNav__item:nth-of-type(2) {
    color: var(--primary-skyBlue);
    position: relative;
}

.footerNav__item:nth-of-type(2)::before {
    content: '';
    display: block;
    width: 24%;
    height: 1px;
    background-color: var(--primary-skyBlue);
    position: absolute;
    top: 50%;
}

/* footer pc */
@media screen and (min-width:769px) {
    .footerNav__item:nth-of-type(2) a {
        text-decoration: underline var(--primary-skyBlue);
        text-underline-offset:5px;
    }

    .footerNav__item:nth-of-type(2)::before {
        display: none;
    }
}/* pc 769px */