body.no-scroll {
    overflow: hidden;
}

.main-container {
    position: relative;
}

.transform-center {
    position: absolute;
    transform: translate(-50%, -50%);
}

.btn-transform-center {
    position: absolute;
    transform: translate(-50%, -50%);
    cursor: pointer;
}

.btn-general {
    position: absolute;
    cursor: pointer;
}

.center-x {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5); /* 黑色半透明 */
    z-index: 10;
    display: none;
}

#loading {
    position: fixed;
    top: 50%;
    left: 50%;
    width: 15%;
    max-width: 510px;
    transform: translate(-50%, -50%);
    z-index: 11;
    display: none;
}

@keyframes fadeIn{
    0% {
        opacity: 0;
    }
    100%{
        opacity: 1;
    }
}

@keyframes bobbing {
    50%{
        transform:translateY(4vh);
    }
    100%{
        transform:translateY(0vh);
    }
}