.collage_box {
    width: 100%;
    padding-top: calc(1px + 4rem);
    padding-bottom: calc(19px + 2rem);
}

.collage {
    max-width: 1740px;
    width: 90%;
    margin: auto;
    display: flex;
    justify-content: space-between;

}

.collage_left {
    width: 20.6897%;
}

.collage_search {
    width: 100%;
    height: calc(20px + 3rem);
    background: #007BA3;
    border-radius: calc(5px + 0.25rem);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-right: calc(4px + 1.5rem);
}

.collage_search input {
    height: 100%;
    width: 70%;
    background-color: transparent;
    border: none;
    outline: medium;
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 400;
    font-size: calc(10px + 0.5rem);
    color: #FFFFFF;
    line-height: calc(9px + 1rem);
    padding-left: calc(7px + 1rem);
}

.collage_search input::placeholder {
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 400;
    font-size: calc(10px + 0.5rem);
    color: #FFFFFF;
    line-height: calc(9px + 1rem);

}

.collage_search img {
    width: calc(4px + 1rem);
}

.collage_nav {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: calc(9px + 1.5rem);
    margin-top: calc(13px + 2rem);
}

.collage_nav_item a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 400;
    font-size: calc(8px + 0.5rem);
    color: #666666;
    line-height: calc(6px + 1rem);
    padding-left: calc(7px + 1rem);
    padding-right: calc(3px + 2rem);
}

.index_3_list_item {
    cursor: pointer;
}

.collage_nav_item img {
    width: calc(4px + 1rem);
    display: none;
}

.collage_nav_item img:nth-of-type(1) {
    display: block;
}

.collage_nav_item_act a {
    color: #007BA3;
}

.collage_nav_item_act img:nth-of-type(1) {
    display: none;
}

.collage_nav_item_act img:nth-of-type(2) {
    display: block;
}

.collage_right {
    width: 76.3218%;
}

.collage_list {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: calc(3px + 1.5rem);
    row-gap: calc(6px + 1.5rem);
}

.collage_show_box {
    width: 100%;
    height: 100vh;
    background-color: #00000070;
    position: fixed;
    top: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    display: none;
}

.collage_show {
    width: 70%;


}

.collage_show_box .close {
    position: absolute;
    top: 10%;
    right: 12%;
    cursor: pointer;
    transition: .5s;
}

.collage_show_box .close:hover {
    transform: rotate(180deg);
}

@media screen and (max-width: 1100px) {
    .collage {
        flex-direction: column;
        justify-content: flex-start;
        gap: calc(10px + 5rem);
    }

    .collage_left {
        width: 100%;
    }

    .collage_search {
        height: calc(28px + 3rem);
    }

    .collage_search input {
        font-size: calc(10px + 1rem);
    }

    .collage_search input::placeholder {
        font-size: calc(10px + 1rem);
    }

    .collage_search img {
        width: calc(13px + 1rem);
    }

    .collage_nav_item a {
        font-size: calc(10px + 1rem);
        line-height: 1.5;
    }

    .collage_nav_item img {
        width: calc(18px + 1rem);
    }

    .collage_right {
        width: 100%;
    }

    .index_3_list_item {
        width: 100% !important;
    }

    .index_3_list_item_pic {
        height: auto !important;
    }

    .collage_show {
        width: 100%;
    }

    .collage_show_box .close {
        position: absolute;
        top: 27%;
        right: 3%;
        cursor: pointer;
        transition: .5s;
    }
}