.section15 {
    margin-left: 5%;
    margin-right: 5%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.section15_location_card h2 {
    text-align: center;
    font-size: 2.5vh;
    /*for chinese browser*/
    font-size: calc(1vw + 2vh);
    margin-top: 1vh;
    /*for chinese browser*/
    margin-top: calc(2vw + 0.5vh);
    margin-bottom: 0;
}

.section15_location_card h3 {
    text-align: center;
    font-size: 2vh;
    /*for chinese browser*/
    font-size: calc(0.5vw + 1.5vh);
    margin-top: 1vh;
    margin-bottom: 0.5vh;
}

.section15_location_card p {
    text-align: center;
    font-size: 1vh;
    /*for chinese browser*/
    font-size: calc(0.5vw + 0.5vh);
    margin-top: 1vh;
    /*for chinese browser*/
    margin-top: calc(1vw + 0.5vh);
    margin-bottom: 2vh;
    /*for chinese browser*/
    margin-bottom: calc(1vw + 2vh);
}

.section15_location_card p:hover {
    transform: scale(1.5);
    transition: 0.5s;

}

.section15_location_card a {
    text-decoration: none;
    color: rgba(0, 0, 0, 0.429);
}

.section15_location_card a:hover {
    color: rgba(0, 0, 0, 0.904);
}

.section15_title {
    margin-top: 2vh;
    /*for chinese browser*/
    margin-top: calc(3vw + 1vh);
}

.section15_title h1 {
    text-align: center;
    font-size: 3vh;
    /*for chinese browser*/
    font-size: calc(2vw + 2vh);
}

.section15_title p {
    text-align: center;
    font-size: 2vh;
    /*for chinese browser*/
    font-size: calc(2vw + 1.5vh);
}

.section15_location_container {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-around;
    margin-top: 0;
    margin-bottom: 5vh;
}

.section15_location_card {
    width: 50vh;
    height: max-content;
    border-radius: 1vh;
    box-shadow: 0 0 1vh rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    overflow: hidden;
    margin-top: 3vh;
    margin-bottom: 3vh;
    margin-left: 2vh;
    margin-right: 2vh;
}


.section15_location_card:hover {

    animation: hoverAnimation 0.8s forwards;
}

@keyframes hoverAnimation {
    0% {
        transform: skew(-5deg) scale(1);
    }

    100% {
        transform: scale(1.1);
    }

}


.section15_location_card img {
    width: 70vh;
    height: 30vh;
    object-fit: cover;
}




.section15_modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.4);
    
    
    scrollbar-width: none;
    -ms-overflow-style: none;
}






.section15_modal::-webkit-scrollbar {
    display: none;
}

.section15_modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 2vh;
    border: 1px solid #888;
    width: 80%;
    max-width: 70vh;
    transform: translate(0%, 8vh);/*for chinese browser*/
    transform: translate(0%, calc(-50% + 40vh - 10vw));
    border-radius: 3vh;
    
}

.section15_close {
    color: #aaa;
    float: right;
    font-size: 3vh;
    font-weight: bold;
}

.section15_modal-content h2 {
    font-size: 2.5vh;
    margin: 2vh 0;
}

.section15_modal-content p {
    font-size: 1.6vh;
    line-height: 1.6;
    margin: 0.5vh 0;
}

#section15_modal-founded {
    font-size: 1.8vh;
    line-height: 1.6;
    margin: 1vh 0;
    font-weight: bold;
}


.section15_modal-content p:last-child {
    margin-bottom: 5vw;
}

.section15_close:hover,
.section15_close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

.section15_modal-content img {
    width: 100%;
    height: auto;
}

/* 样式省略，保留之前的样式 */
.section15_arrow {
    background-color: rgb(0, 0, 0);
    color: white;
    border: none;
    padding: 1.5vh;
    margin: 1vh;
    background-size:contain;
    background-repeat: no-repeat;
    cursor: pointer;
    position: absolute;
    overflow: hidden;
    border-radius: 20%;
    top: 40%;
    transform: translateY(50%);
    z-index: 10;
}

.section15_arrow:hover {
    background-color: rgb(255, 255, 255);
    transition: transform 0.5s;
    transform: scale(1.2) translateY(20%);
}


#section15_prev-image {
    left: 1vh;
    background-image: url("../pic/arrow/LA_white.png");
}
#section15_prev-image:hover {
    left: 1vh;
    background-image: url("../pic/arrow/LA_black.png");
}


#section15_next-image {
    right: 1vh;
    background-image: url("../pic/arrow/RA_white.png");
}
#section15_next-image:hover {
    right: 1vh;
    background-image: url("../pic/arrow/RA_black.png");
}


/* img container 15.1 */
.section15_image-container {
    position: relative;
    width: 100%;
    height: auto;
    overflow: hidden; /* 确保图片溢出隐藏 */
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: row;
    border-radius: 2vh;
}

#section15_image-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: auto;
    object-fit: cover;
    /* transition: transform 0.5s ease, opacity 0.5s ease; */
    transition: transform 0.5s ease-in-out, opacity 0.5s ease-in-out;
}

.section15_hidden {
    display: none;
}



@keyframes slideInFromLeft {
    0% {
        opacity: 0;
        transform: translateX(-100%);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    0% {
        opacity: 0;
        transform: translateX(100%);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOutToLeft {
    0% {
        opacity: 1;
        transform: translateX(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-100%);
    }
}

@keyframes slideOutToRight {
    0% {
        opacity: 1;
        transform: translateX(0);
    }
    100% {
        opacity: 0;
        transform: translateX(100%);
    }
}

.section15_slide-in-left {
    animation: slideInFromLeft 0.5s forwards;
}

.section15_slide-in-right {
    animation: slideInFromRight 0.5s forwards;
}

.section15_slide-out-left {
    animation: slideOutToLeft 0.5s forwards;
}

.section15_slide-out-right {
    animation: slideOutToRight 0.5s forwards;
}