.a_top{
    width: 100vw;
    height: 100vh;
}
.a_top_mov{
    width: 100%;
    height: 100%;
}
.a_top_mov video{
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.a_sec01{
    max-width: 1000px;
    margin: 0 auto;
    padding: 100px 20px;
    box-sizing: border-box;
    text-align: center;
}
.a_sec01 > img{
    width: 150px;
    margin-bottom: 50px;
}
.a_sec01 > p{
    font-size: 12px;
    line-height: 50px;
}
.a_sec01 > h2{
    font-size: 12px;
    line-height: 50px;
    font-family: serif;
}
.a_sec02{
    max-width: 580px;
    height: 70vh;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
    text-align: center;
}
.a_sec02 img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.a_sec03{
    max-width: 1000px;
    margin: 0 auto;
    padding: 100px 20px;
    box-sizing: border-box;
    text-align: center;
}
.a_sec03 > p{
    font-size: 12px;
    line-height: 50px;
}
.a_sec03 > h3{
    font-size: 11px;
    letter-spacing: 2px;
    line-height: 60px;
    font-family: serif;
}