/* 箭头样式 */
.scroll-arrow {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 70px;
    text-decoration: none;
}

.scroll-arrow span {
    position: absolute;
    top: 0;
    left: 50%;
    width: 30px;
    height: 50px;
    margin-left: -15px;
    border-left: 3px solid var(--miku-color);
    border-bottom: 3px solid var(--miku-color);
    transform: rotate(-45deg);
    animation: scroll-arrow 2s infinite;
    box-sizing: border-box;
}

@keyframes scroll-arrow {
    0% {
        opacity: 0;
        transform: rotate(-45deg) translate(-20px, -20px);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: rotate(-45deg) translate(0, 0);
    }
}

.scroll-arrow:hover span {
    border-color: var(--miku-color);
}