.section1 { width: 100%; height: 100vh; position: relative; overflow: hidden; }
.section1 .bete-wrap { display: flex; height: 100%; }
.section1 .bete-wrap > div { width: 100vw; height: 100vh; flex-shrink:0; }
.section1 .bete-wrap .video-box { width: 100%; height: 100%; position: relative; }
.section1 .bete-wrap .video-box .bg { z-index: 1; width: 100%; height: 100%; position: absolute; left: 0; top: 0; background: rgba(0,0,0,0.3); }
.section1 .bete-wrap .video-box video { width: 100%; height: 100%; position: absolute; left: 0; object-fit: cover; }
.section1 .bete-wrap .text-wrap { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); text-align: center; z-index: 2; }
.section1 .bete-wrap .text-wrap .sub-title { font-size: 23px; font-weight: 600; margin-bottom: 9px; }
.section1 .bete-wrap .text-wrap .title { font-size: 60px; font-weight: 600; }
.section1 .bete-wrap .text-wrap .title span { color: #05F0FF; }
.section1 .bete-wrap .text-wrap .flex { display: flex; align-items: center; justify-content: center; margin-top: 60px; text-align: left; }
.section1 .bete-wrap .text-wrap .flex .link-box { margin-right: 44px; }
.section1 .bete-wrap .text-wrap .flex .link-box:last-child { margin-right: 0; }
.section1 .bete-wrap .text-wrap .flex .link-box a { font-size: 18px; font-weight: 500; line-height: 180%; display: block; }

.section1 .bete-wrap > div.right {
    background: #000;
}

.section1 .bete-wrap .right-text {
    margin-bottom: 60px;
}

.section1 .bete-wrap .case-wrap {
    width: 1607px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0;
}

.section1 .bete-wrap .case-wrap .case-item {
    width: 401px;
    height: 237px;
    position: relative;
    perspective: 1000px;
    z-index: 1;
}

/* 기존 flip 회전 제거 */
.section1 .bete-wrap .case-wrap .flip-box {
    width: 100%;
    height: 100%;
    position: relative;
}

/* 이 부분 삭제 개념
.section1 .bete-wrap .case-wrap .case-item:hover .flip-box {
    transform: rotateY(180deg);
}
*/

.section1 .bete-wrap .case-wrap .before,
.section1 .bete-wrap .case-wrap .after {
    position: absolute;
    overflow: hidden;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transition:
        opacity .45s ease,
        transform .45s cubic-bezier(.22,1,.36,1);
}

.section1 .bete-wrap .case-wrap .before {
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    z-index: 2;
    opacity: 1;
    transform: scale(1);
}

.section1 .bete-wrap .case-wrap .after {
    width: 595px;
    height: 351px;
    position: fixed;
    left: 50%;
    top: 50%;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -50%) scale(.7);
    box-shadow: 0 0 15px rgba(0,0,0,0.5);
}

.section1 .bete-wrap .case-wrap .before img,
.section1 .bete-wrap .case-wrap .after img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* hover 시 */
.section1 .bete-wrap .case-wrap .case-item:hover {
    z-index: 10;
}

.section1 .bete-wrap .case-wrap .case-item:hover .before {
    opacity: 0;
    transform: scale(.95);
}

.section1 .bete-wrap .case-wrap .case-item:hover .after {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}
.section1 .bete-wrap .case-wrap .case-item:hover .text-box { opacity: 1; }
.section1 .bete-wrap .case-wrap .case-item .text-box { position: absolute; left: 0; bottom: 0; width: 100%; z-index: 2; padding: 25px 40px; }
.section1 .bete-wrap .case-wrap .case-item .text-box .sub-title { font-size: 14px; font-weight: 500; }
.section1 .bete-wrap .case-wrap .case-item .text-box .title-box { display: flex; align-items: flex-end; justify-content: space-between; }
.section1 .bete-wrap .case-wrap .case-item .text-box .title { font-size: 23px; font-weight: 600; }
.section1 .bete-wrap .case-wrap .case-item .text-box .date { font-size: 18px; font-weight: 500; }