/* sec_1 */
#sec_1 {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    background: url(../img/main/sec1.png) no-repeat 0 0 / cover;
}

#sec_1 video {
    position: absolute;
    left: 0;
    top: 0;
    width: auto;
    height: auto;
    /* z-index: -1; */
    display: block;
    min-width: 100%;
    min-height: 100%;
}

#sec_1 img {
    width: auto;
    height: auto;
    position: relative;
    z-index: 1;
}

/* sec_2 */
#sec_2 {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
}

#sec_2 h2 {
    font-size: 4.2rem;
    font-weight: bold;
    color: #08287f;
    margin: 8.5rem 0;
    text-align: center;
}

#sec_2 .sec2_contents {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
    /* padding: 0 8.2rem; */
    max-width: 1400px;
    margin: 0 auto;
    margin-bottom: 8.5rem;
    display: flex;
}

#sec_2 .sec2_contents .sec2_item {
    height: 40rem;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 2.3rem;
    cursor: pointer;
}

#sec_2 .sec2_contents .sec2_item:last-child {
    margin-right: 0;
}

#sec_2 .sec2_contents .sec2_item::after {
    position: absolute;
    content: "";
    width: 100%;
    height: 100%;
    background: rgba(000, 000, 000, 0.37);
}

#sec_2 .sec2_contents .sec2_item.active::after {
    position: absolute;
    content: "";
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.45);
}

#sec_2 .sec2_contents .sec2_item1 {
    width: 50%;
    background: url(../img/main/sec2_item1.png) no-repeat 0 0 / cover;
    transition: 0.2s;
}

#sec_2 .sec2_contents .sec2_item2 {
    width: 16.666%;
    background: url(../img/main/sec2_item2.png) no-repeat 0 0 / cover;
    transition: 0.2s;
}

#sec_2 .sec2_contents .sec2_item3 {
    width: 16.666%;
    background: url(../img/main/sec2_item3.png) no-repeat 0 0 / cover;
    transition: 0.2s;
}

#sec_2 .sec2_contents .sec2_item4 {
    width: 16.666%;
    background: url(../img/main/sec2_item4.png) no-repeat 0 0 / cover;
    transition: 0.2s;
}

#sec_2 .sec2_contents .sec2_item .text_box {
    width: auto;
    height: auto;
    overflow: hidden;
    position: relative;
    z-index: 9;
}

#sec_2 .sec2_contents .sec2_item .text_box h3 {
    font-size: 4.5rem;
    font-weight: bold;
    color: #08287f;
    text-shadow: 4px 7px 4px #fff;
    transform: translateY(100rem);
    transition: 0.2s;
}

#sec_2 .sec2_contents .sec2_item .text_box p {
    font-size: 2rem;
    color: #3db0d5;
    font-weight: bold;
    text-align: right;
    text-shadow: 2px 2px 2px #fff;
    transform: translateY(100rem);
    transition: 0.2s;
}

#sec_2 .sec2_contents .sec2_item.active .text_box h3 {
    transform: translateY(0);
}

#sec_2 .sec2_contents .sec2_item.active .text_box p {
    transform: translateY(0);
}

/* sec_3 */
#sec_3 {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
    padding: 7rem 0;
    text-align: center;
}

#sec_3 h2 {
    font-weight: bold;
    color: #08287f;
    font-size: 4.2rem;
    margin-bottom: 2.4rem;
}

#sec_3 h3 {
    font-weight: 600;
    font-size: 2rem;
    color: #08287f;
    margin-bottom: 8rem;
}

#sec_3 .sec3_wrap {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
    padding: 0 32rem;
    display: flex;
    justify-content: center;
}

#sec_3 .sec3_wrap img {
    width: 100%;
    height: auto;
    margin-right: 12.5rem;
}

#sec_3 .sec3_wrap img:last-child {
    margin-right: 0;
}

/* sec_4 */
#sec_4 {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
    padding: 5rem 0 0;
    text-align: center;
}

#sec_4 h2 {
    font-weight: bold;
    font-size: 4.2rem;
    color: #08287f;
    margin-bottom: 10rem;
}

#sec_4 .sec4_wrap {
    width: 100%;
    height: auto;
    margin: 0 auto;
    max-width: 1400px;
    position: relative;
    overflow: hidden;
    display: flex;
}

#sec_4 .sec4_wrap .sec4_item {
    width: 33.333%;
    height: 30rem;
    cursor: pointer;
    margin-right: 5.2rem;
}

#sec_4 .sec4_wrap .sec4_item:first-child {
    background: url(../img/main/sec4_item1.png) no-repeat 0 0 / cover;
}

#sec_4 .sec4_wrap .sec4_item:nth-child(2) {
    background: url(../img/main/sec4_item2.png) no-repeat 0 0 / cover;
}

#sec_4 .sec4_wrap .sec4_item:last-child {
    background: url(../img/main/sec4_item3.png) no-repeat 0 0 / cover;
    margin-right: 0;
}

#sec_4 .sec4_wrap .sec4_item .drop_background {
    width: 100%;
    height: 100%;
    background: rgba(8, 40, 127, 0.88);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: 0.3s;
}

#sec_4 .sec4_wrap .sec4_item .drop_background h2 {
    font-weight: bold;
    font-size: 4.2rem;
    color: #fff;
    margin-bottom: 0;
    opacity: 0;
    transition: 0.3s;
}

#sec_4 .sec4_wrap .sec4_item:hover .drop_background {
    opacity: 1;
}

#sec_4 .sec4_wrap .sec4_item:hover .drop_background h2 {
    opacity: 1;
}

/* sec_5 */
#sec_5 {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
    padding: 7rem 0;
}

#sec_5 h2 {
    font-size: 4.2rem;
    font-weight: bold;
    color: #08287f;
    margin-bottom: 9rem;
    text-align: center;
}

#sec_5 .sec5_slide {
    width: 100%;
    height: auto;
    position: relative;
}

#sec_5 .sec5_slide img {
    margin-right: 2rem;
}

#sec_5 .sec5_slide .slick-dots {
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
    margin-top: 6.4rem;
}

#sec_5 .sec5_slide .slick-dots li {
    margin-right: 1.7rem;
}

#sec_5 .sec5_slide .slick-dots li:last-child {
    margin-right: 0;
}

#sec_5 .sec5_slide .slick-dots li button {
    width: 2.6rem;
    height: 2.6rem;
    border-radius: 50%;
    background: #c9d4f3;
    border: none;
    font-size: 0;
}

#sec_5 .sec5_slide .slick-dots li.slick-active button {
    background: #08287f;
}

/* sec_6 */
#sec_6 {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
    padding: 9rem 0;
}

#sec_6 .sec6_wrap {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
}

#sec_6 .sec6_wrap .sec6_item {
    width: 100%;
    height: auto;
    margin-right: 3.3rem;
}

#sec_6 .sec6_wrap .sec6_item img {
    width: 100%;
    height: auto;
    cursor: pointer;
}

#sec_6 .sec6_wrap .sec6_item:last-child {
    margin-right: 0;
}

@media (max-width: 1400px) {
    #sec_2 h2 {
        font-size: 4.8rem;
        margin: 7rem 0;
    }

    #sec_3 h2 {
        font-size: 4.8rem;
    }

    #sec_3 h3 {
        font-size: 2.5rem;
    }

    #sec_3 .sec3_wrap img {
        width: 15rem;
    }

    #sec_4 h2 {
        font-size: 4.8rem;
    }

    #sec_4 .sec4_wrap .sec4_item {
        height: 50rem;
    }

    #sec_4 .sec4_wrap .sec4_item .drop_background h2 {
        font-size: 3.6rem;
    }

    #sec_5 h2 {
        font-size: 4.8rem;
        margin-bottom: 5rem;
    }
}

@media (max-width: 1200px) {
    #sec_1 video {
        display: none;
    }

    #sec_1 img {
        width: 50rem;
    }

    #sec_2 .sec2_contents .sec2_item {
        height: 50rem;
    }

    #sec_3 .sec3_wrap img {
        margin-right: 5rem;
    }

    #sec_4 .sec4_wrap .sec4_item {
        height: 40rem;
    }

    #sec_5 .sec5_slide .slick-dots li button {
        width: 2rem;
        height: 2rem;
    }

    #sec_5 .sec5_slide .slick-dots {
        margin-top: 4rem;
    }

    #sec_6 {
        padding: 5rem 4rem;
    }
}

@media (max-width: 900px) {
    #sec_1 img {
        width: 40rem;
    }

    #sec_2 h2 {
        font-size: 3.6rem;
        margin: 5rem 0;
    }

    #sec_2 .sec2_contents .sec2_item .text_box h3 {
        font-size: 3.2rem;
    }

    #sec_2 .sec2_contents .sec2_item .text_box p {
        font-size: 1.5rem;
    }

    #sec_3 {
        padding: 7rem 0 5rem 0;
    }

    #sec_3 h2 {
        font-size: 3.6rem;
    }

    #sec_3 h3 {
        font-size: 2rem;
    }

    #sec_3 .sec3_wrap {
        flex-wrap: wrap;
        padding: 0;
    }

    #sec_3 .sec3_wrap img:last-child {
        margin-right: 5rem;
    }

    #sec_3 .sec3_wrap img {
        margin: 5rem;
    }

    #sec_3 h3 {
        word-break: keep-all;
    }

    #sec_4 {
        padding: 7rem 0 5rem 0;
    }

    #sec_4 .sec4_wrap .sec4_item {
        margin-right: 2rem;
    }

    #sec_4 .sec4_wrap .sec4_item {
        height: 30rem;
    }

    #sec_4 h2 {
        font-size: 3.6rem;
        margin-bottom: 5rem;
    }

    #sec_4 .sec4_wrap .sec4_item .drop_background h2 {
        font-size: 2.6rem;
    }

    #sec_4 .sec4_wrap .sec4_item {
        height: 25rem;
    }

    #sec_5 h2 {
        font-size: 3.6rem;
    }

    #sec_6 {
        padding: 2rem 3rem;
    }
}

@media (max-width: 700px) {
    #sec_2 .sec2_contents {
        padding: 0 3rem;
    }

    #sec_2 .sec2_contents .sec2_item {
        height: 30rem;
    }

    #sec_2 .sec2_contents .sec2_item .text_box h3 {
        font-size: 2.6rem;
    }

    #sec_4 .sec4_wrap {
        padding: 0 3rem;
    }

    #sec_4 .sec4_wrap .sec4_item .drop_background {
        padding: 0 1rem;
    }

    #sec_4 .sec4_wrap .sec4_item .drop_background h2 {
        word-break: keep-all;
        font-size: 2rem;
    }

    #sec_6 .sec6_wrap {
        flex-wrap: wrap;
    }

    #sec_6 .sec6_wrap .sec6_item {
        margin-right: 0;
        margin-bottom: 3rem;
    }
}

@media (max-width: 500px) {
    #sec_1 img {
        width: 28rem;
    }

    #sec_2 h2 {
        font-size: 2.8rem;
        margin: 3rem 0;
    }

    #sec_2 .sec2_contents {
        flex-wrap: wrap;
    }

    #sec_2 .sec2_contents .sec2_item {
        margin: 0;
    }

    #sec_2 .sec2_contents .sec2_item1 {
        width: 50%;
    }

    #sec_2 .sec2_contents .sec2_item2 {
        width: 50%;
    }

    #sec_2 .sec2_contents .sec2_item3 {
        width: 50%;
    }

    #sec_2 .sec2_contents .sec2_item4 {
        width: 50%;
    }

    #sec_2 .sec2_contents .sec2_item {
        height: 20rem;
    }

    #sec_2 .sec2_contents .sec2_item .text_box h3 {
        font-size: 1.8rem;
    }

    #sec_2 .sec2_contents .sec2_item .text_box p {
        font-size: 1.2rem;
    }

    #sec_2 .sec2_contents .sec2_item {
        font-size: 20rem;
    }

    #sec_3 h2 {
        font-size: 2.8rem;
    }

    #sec_3 h3 {
        font-size: 1.5rem;
        margin-bottom: 0;
        padding: 0 20px;
    }

    #sec_3 h3 br {
      display: none;
    }

    #sec_3 .sec3_wrap {
        padding: 0 20px;
    }
    
    #sec_3 .sec3_wrap img {
        width: 35%;
        margin: 0;
        margin-top: 4%;
    }

    #sec_3 .sec3_wrap img:first-child {
        margin-right: 4%;
    }

    #sec_3 .sec3_wrap img:nth-child(3) {
        margin-right: 4%;
    }

    #sec_3 .sec3_wrap img:last-child {
        margin-right: 0;
    }

    #sec_4 h2 {
        font-size: 2.8rem;
        margin-bottom: 3rem;
    }

    #sec_4 .sec4_wrap {
        flex-wrap: wrap;
    }

    #sec_4 .sec4_wrap .sec4_item {
        width: 100%;
        height: 20rem;
        margin-right: 0;
        margin-bottom: 3rem;
    }

    #sec_4 .sec4_wrap .sec4_item:last-child {
        margin-bottom: 0;
    }

    #sec_5 h2 {
        font-size: 2.8rem;
    }

    #sec_5 .sec5_slide {
        padding: 0 5rem;
    }

    #sec_5 .sec5_slide img {
        margin-right: 0;
        margin: 0 2rem;
    }

    #sec_5 .sec5_slide .slick-dots li button {
        width: 1rem;
        height: 1rem;
    }

    #sec_5 .sec5_slide .slick-dots li {
        margin-right: 1rem;
    }

    #sec_5 .sec5_slide .slick-dots {
        margin-top: 2rem;
    }
}

@media (max-width: 400px) {
    #sec_2 .sec2_contents .sec2_item .text_box p {
        text-align: center;
    }

    #sec_2 .sec2_contents .sec2_item .text_box h3 {
        text-align: center;
    }

    

    #sec_5 .sec5_slide {
        padding: 0 3rem;
    }
}

@media (max-width: 300px) {
    #sec_1 img {
        width: 25rem;
    }

    #sec_2 .sec2_contents .sec2_item {
        height: 20rem;
    }

    #sec_5 .sec5_slide {
        padding: 0;
    }
}