.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);
}


/* 텍스트 설명 */

.sub_content .dec {
    position: relative;
}

.sub_content .txt strong {
    position: relative;
}

.sub_content .txt strong::after {
    position: absolute;
    content: "";
    bottom: -5rem;
    left: 2%;
    transform: translate(0, -50%);
    width: 8rem;
    height: 0.5rem;
    background: var(--mc);
}

.sub_content .txt p {
    font-size: 1.8rem;
    line-height: 3.2rem;
    text-align: left;
    margin-bottom: 3.2rem;
}

.sub_content .circle_btn {
    position: absolute;
    bottom: -6rem;
    right: 8rem;
    z-index: 2;
    background: var(--mc);

}

.sub_content .circle_btn::before {
    background: var(--mc);
}


@media(max-width: 768px) {

    .sub_content::after {
        position: absolute;
        content: "";
        inset: 0 0 0 0;
        background: rgba(255, 255, 255, 0.9);
    }

    .sub_content {
        padding-bottom: 8rem;
        background: none;
    }

    .sub_content .dec {
        flex: 1;
    }

    .sub_content .dec {
        padding: 0 0 4rem 0;
    }

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

    .sub_content .dec .txt strong {
        font-size: 2rem;
    }


    .sub_content .txt p {
        font-size: 1.6rem;
        line-height: 3.2rem;
        text-align: left;
        margin-bottom: 1.2rem;
        word-break: break-all;
    }

   .sub_content .circle_btn {
        right: 0.8rem;  
        width: 9rem;
        height: 9rem;
    }


      .sub_content .circle_btn img {
        height: 2.8rem;

    }

      .sub_content .circle_btn::before {
        content: "";
        position: absolute;
        inset: 0 0 0 0;
        width: 9rem;
        height: 9rem;

        border-radius: 50%;
        opacity: 0;
    }

}


@media(max-width: 390px) {
   .sub_content .dec .title strong {
        font-size: 2.2rem;
    }

}

@media(max-width: 360px) {

    .sub_content .txt strong {
        position: relative;
        display: block;
        font-size: 2.4rem;
        font-weight: 600;
        color: #444;
        color: var(--mc);
        margin-bottom: 3.2rem;

    }
}