/* ================= 연혁 */
#history_board {
    max-width: var(--mainsize);
    margin: 40px auto 100px;
    padding: 0 20px;
    font-family: var(--k-font);
    color: #777;
}

#history_board .history_title {
    text-align: center;
    margin-bottom: 40px;
}

#history_board .history_title h2 {
    font-size: 40px;
    font-weight: 700;
    color: #222;
}

#history_board .history_title p {
    margin-top: 10px;
    font-size: 15px;
    color: #777;
}

/* 테이블 */
#history_board .history_tbl {
    border-top: 1px solid #555;
}

#history_board .history_tbl table {
    width: 100%;
}

#history_board .history_tbl th {
    width: 18%;
    padding: 18px 10px;
    background: #f5f6f8;
    border-bottom: 1px solid #e1e1e1;
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    vertical-align: middle;
}

#history_board .history_tbl td {
    padding: 18px 20px;
    border-bottom: 1px solid #e1e1e1;
    font-size: 15px;
}

#history_board .history_tbl td strong {
    display: block;
    margin-bottom: 6px;
    font-size: 16px;
    font-weight: 600;
    color: #222;
}

#history_board .history_tbl td p {
    font-size: 14px;
    line-height: 1.7;
    color: #777;
}

#history_board .history_tbl th {
    width: 18%;
    padding: 18px 10px;
    background: #f5f6f8;
    border-bottom: 1px solid #e1e1e1;
    text-align: center;
    vertical-align: middle;
}

#history_board .history_tbl th .year {
    display: block;
    font-size: 17px;
    font-weight: 700;
    color: var(--primary);
}

#history_board .history_tbl th .month {
    display: inline-block;
    margin-top: 4px;
    padding: 2px 8px;
    font-size: 13px;
    font-weight: 500;
    color: #555;
    background: #f1f3f6;
    border-radius: 12px;
}

.client_section{
    padding:80px 0;
}

.section_title{
    text-align:center;
    margin-bottom:40px;
}

.section_title h2{
    font-size:34px;
    font-weight:700;
}

.section_title p{
    color:#777;
}

/* 슬라이더 */

.logo_slider{
    overflow:hidden;
    position:relative;
}

.logo_track{
    display:flex;
    animation:slide 25s linear infinite;
}

.logo_slider:hover .logo_track{
    animation-play-state:paused;
}

.logo{
    min-width:200px;
    display:flex;
    justify-content:center;
    align-items:center;
    padding:20px;
}

.logo img{
    max-width:140px;
    opacity:0.8;
    transition:0.3s;
}

.logo img:hover{
    opacity:1;
}

/* 애니메이션 */

@keyframes slide{
    0%{
        transform:translateX(0);
    }
    100%{
        transform:translateX(-50%);
    }
}

.delivery_timeline{
    padding:100px 0;
}

.timeline{
    position:relative;
    max-width:900px;
    margin:0 auto;
}

.timeline:before{
    content:'';
    position:absolute;
    left:120px;
    top:0;
    width:2px;
    height:100%;
    background:#ddd;
}

.timeline_item{
    display:flex;
    margin-bottom:40px;
}

.year{
    width:120px;
    font-size:28px;
    font-weight:700;
    color:#1e3a5f;
}

.timeline_content{
    padding-left:40px;
}

.timeline_content p{
    margin-bottom:10px;
    font-size:16px;
}

.timeline_content span{
    display:inline-block;
    width:30px;
    font-weight:700;
    color:#1e3a5f;
}

.client_wrap{
    max-width:1200px;
    margin:0 auto;
    padding:80px 20px;
}

.title_box{
    text-align:center;
    margin-bottom:50px;
}

.title_box h2{
    font-size:36px;
    font-weight:700;
}

.title_box p{
    color:#777;
    margin-top:10px;
}

/* 갤러리 */

.client_gallery{
    display:grid;
    grid-template-columns:repeat(4, 1fr);
    gap:25px;
}

/* 로고 박스 */

.client_item{
    height:100px;

    display:flex;
    align-items:center;
    justify-content:center;

    border:1px solid #eee;
    background:#fff;

    transition:0.3s;
}

.client_item:hover{
    box-shadow:0 5px 15px rgba(0,0,0,0.08);
}

/* 로고 */

.client_item img{
    max-width:140px;
    max-height:60px;

    width:auto;
    height:auto;

    opacity:0.8;
    transition:0.3s;
}

.client_item:hover img{
    opacity:1;
}


@media(max-width:580px){
    #history_board .history_tbl th {
        width: 100%;
        display: block;
        text-align: left;
        padding: 12px 15px;
    }

    #history_board .history_tbl th .year {
        display: inline-block;
        margin-right: 8px;
    }

    #history_board .history_tbl th .month {
        margin-top: 0;
    }

    #history_board .history_tbl td {
        display: block;
        padding: 12px 15px 20px;
    }
}

@media (max-width:900px){

.client_gallery{
    grid-template-columns:repeat(3,1fr);
}

}

@media (max-width:600px){

.client_gallery{
    grid-template-columns:repeat(2,1fr);
}

}