* {
    /* outline: 1px solid tomato; */
}

.sub_visual {
    position: relative;
    height: 38vh;
    background: url(../images/mainvisual01.jpg)center center/cover;
}

.sub_visual::after {
    position: absolute;
    content: "";
    inset: 0 0 0 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.5));
}

.sub_content {
    position: relative;

    background: url(../images/submain_bg.jpg) center center/cover;

}

.sub_content::after {
    position: absolute;
    content: "";
    inset: 0 0 0 0;
    background: rgba(255, 255, 255, 0.7);
}

.sub_content .dec {
    flex: 1;
}

.dec .sub_history {
    padding: 0 8rem;
}

.dec .sub_history .year {
    position: relative;
    display: flex;
    justify-content: center;
    text-align: center;
    margin-bottom: 4.8rem;
}

.dec .sub_history .year::before {
    position: absolute;
    content: "";
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 2px;
    background: var(--mc);
}

.dec .sub_history .itm02 .year::before {
    background: var(--sc);
}

.dec .sub_history .itm03 .year::before {
    background: var(--tc);

}

.dec .sub_history ul {
    margin-bottom: 4.8rem;
}

.dec .sub_history ul .year p {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    line-height: 2.2rem;
    width: 12rem;
    height: 12rem;
    background: var(--mc);
    border-radius: 50%;
    color: var(--white-color);
    word-break: normal;

}

.dec .sub_history .itm02 .year p {
    background: var(--sc);
}

.dec .sub_history .itm03 .year p {
    background: var(--tc);
}

.dec .sub_history ul li {
    padding: 1.2rem 0;
}

.dec .sub_history ul li {
    display: flex;

    border-bottom: 1px dotted var(--line-color);
}

.dec .sub_history .year_box {
    min-width: 18rem;
}

.dec .sub_history em {
    display: inline-block;
    font-size: 2.4rem;
    font-weight: 500;
    color: var(--mc);
    margin-right: 1.6rem;
    font-size: 2rem;
    line-height: 2.2rem;
    color: var(--mc);
    font-family: "IBM Plex Sans", sans-serif;
}

.dec .sub_history .itm02 em {
    color: var(--sc);
}

.dec .sub_history .itm03 em {
    color: var(--tc);
}

.dec .sub_history span {
    font-family: "IBM Plex Sans", sans-serif;

    display: inline-block;
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--mc);
    /* margin-right: 0.8rem; */
    font-size: 2rem;
    line-height: 2.2rem;
    color: rgba(124, 27, 29, 0.6);
}

.dec .sub_history .itm02 span {
    color: rgba(20, 49, 113, 0.6);
}

.dec .sub_history .itm03 span {
    color: rgba(244, 160, 27, 0.6);
}

.dec .sub_history ul li p {
    font-size: 1.8rem;
    color: #444;
    text-align: left;
}

@media(max-width:768px) {

    .sub_content {
        background: none;
    }

    .sub_content .dec {
        padding: 0 0 0 0;
    }

    .sub_content .dec .title strong {
        font-size: 2.4rem;
    }

    .desc {
        padding: 0;
    }

    .sub_content .dec .title {
        margin-bottom: 4rem;
    }

    .dec .sub_history {
        padding: 0 0;
    }

}

@media(max-width:443px) {

    .sub_content .dec .title strong {
        font-size: 2.2rem;
    }

    .dec .sub_history .year_box {
        min-width: 14.4rem;
    }

    .dec .sub_history em {
        margin-right: 0.8rem;
    }

    .dec .sub_history p {
        font-size: 1.4rem;
    }

    .dec .sub_history em {
        display: inline-block;
        font-size: 1.4rem;
        font-weight: 500;
        color: var(--mc);
        margin-right: 1rem;
        font-size: 2rem;
        line-height: 2.2rem;
        color: var(--mc);
        font-family: "IBM Plex Sans", sans-serif;
    }

    .dec .sub_history span {
        font-family: "IBM Plex Sans", sans-serif;

        display: inline-block;
        font-size: 1.4rem;
        font-weight: 500;
        color: var(--mc);
        /* margin-right: 0.8rem; */
        font-size: 2rem;
        line-height: 2.2rem;
        color: rgba(124, 27, 29, 0.6);
    }
}