/* welcom-page */
header{
    display: none !important;
}
footer{
    display: none !important;
}
#Hamburger{
    display: none !important;
}
.welcome{
    width: 100vw;
    display: flex;
    height: 100vh;
    justify-content: center;
    align-items: center;
    background-color: #111111;
}
.saiki{
    width: 50%;
    background-color: #ffffff;
    height: 100%;
    position: relative;
    img{
        width: 20%;
        height: auto;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }

}
.yorusaiki{
    width: 50%;
    background-color: #111111;
    height: 100%;
    position: relative;
    img{
        width: 20%;
        height: auto;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }

}
@media(max-width:480px){
    .welcome{
        flex-direction: column;
    }
    .saiki{
        width: 100%;
    }
    .yorusaiki{
        width: 100%;
    }
    .sp-menu{
        display: none!important;
    }
}

/* ローディング画面のスタイル */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    animation: fadeIn 1s forwards;
  }
  
  #loading-screen.fade-out {
    opacity: 0;
    pointer-events: none;
  }
  
  #loading-content {
    font-size: 2em;
    color: #333;
  }

  /* ボタン */

  .button-welcome {
    position: relative;
    width: 250px;
    margin: 0 auto;
    padding: .9em 2em;
    color: #111111;
    font-size: 1em;
    top: 70%;
    border-radius: 20px;
    border: none;
}
.button-welcome.saikibtn{
    background-color: #111111;
    color: #ffffff;
}
.button-welcome.yorubtn{
    background-color: #ffffff;
    color: #111111;
    span::after {
        border-top: 2px solid #111111;
        border-right: 2px solid #111111;    
    }
}
.button-welcome::before,
.button-welcome::after {
    position: absolute;
    z-index: -1;
    width: 0;
    height: 1px;
    content: '';
}

.button-welcome::before {
    top: -1px;
    left: 0;
    border-top: 1px solid transparent;
    border-right: 1px solid transparent;
}

.button-welcome::after {
    bottom: 0;
    right: 0;
    border-bottom: 1px solid transparent;
    border-left: 1px solid transparent;
}

.button-welcome:hover::before,
.button-welcome:hover::after {
    width: 100%;
    height: 100%;
    border-color: #ffffff;
    transition: width .3s ease, height .3s .3s ease;
}

.button-welcome span {
    display: flex;
    justify-content: center;
    align-items: center;
}

.button-welcome span::after {
    display: inline-block;
    transform: rotate(45deg);
    width: 5px;
    height: 5px;
    margin-left: 10px;
    border-top: 2px solid #ffffff;
    border-right: 2px solid #ffffff;
    content: '';
}