body {
    margin: 0;
    position: relative;
    background-color: #F0F0F0 ;
    overflow-x: hidden;
    
}


/* 뒤로가기 버튼 */
.back-button {
    position: fixed;
     top: 1vw;
    left: 2vw;

    font-family: "Noto Sans", sans-serif;
    font-size: 50px;
    font-weight: 400;

    color: #9FC4E8;
    text-decoration: none;

    z-index: 9999;
}


.back-button:hover {
    opacity: 0.6;
}

/* 배경 */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    padding: 10%;

    z-index: -10;
}

.stage {
    position: relative;    
    width: 430px;
    height: 1700px;         
    left: 50%;
    margin-left: -215px;
    transform-origin: top center; 
    transform: scale(calc(100vw / 430px));
}

/* 로고 */
.logo-box {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    transition: transform 0.4s ease, opacity 0.3s ease;
}
.logo-img {
    width: 100%;
    display: block;
}
.logo-box.logo-hide {
    transform: translate(-50%, -150%);
    opacity: 0;
}


.photo-item {
    position: relative;
}

.photo-item img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
}


/* 모바일 이미지 크게 보기 */

.image-modal {
    display: none;

    position: fixed;
    top: 0;
    left: 0;

    width: 100vw;
    height: 100vh;

    background: rgba(255, 255, 255, 0.65);

    z-index: 99999;

    justify-content: center;
    align-items: center;
}

.image-modal img {
    display: block;

    width: auto;
    height: auto;

    max-width: 90vw;
    max-height: 85vh;

    object-fit: contain;
}


.gallery {
    position: absolute;
    top: 300px;
    left: 50%;
    transform: translateX(-50%);

    width: 380px;

    display: grid;
    grid-template-columns: repeat(2, 1fr);

    column-gap: 18px;
    row-gap: 18px;

    overflow: visible;
}

.photo-item img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
}


/* 영상 */
.video-item {
    grid-column: 1 / -1;

    width: 100%;
    aspect-ratio: 16 / 9;

    margin-top: 20px;
}

.video-item iframe {
    width: 100%;
    height: 100%;
    display: block;
    border: none;
}