.hi-btn {
    --text-color: #333;
    --background-color: #fff;
    position: relative;
    width: 1.6rem;
    height: .56rem;
    border-radius: .56rem;
    font-size: .16rem;
    line-height: .56rem;
    text-align: center;
    color: var(--text-color);
    background: var(--background-color);
    -webkit-transition: background-color 0.3s, color 0.3s;
    transition: background-color 0.3s, color 0.3s;
}

.hi-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 2px solid var(--background-color);
    z-index: 0;
    border-radius: .56rem;
    opacity: 0;
    -webkit-transform: scale3d(0.6, 0.6, 1);
    transform: scale3d(0.6, 0.6, 1);
    -webkit-transition: -webkit-transform 0.3s, opacity 0.3s;
    -webkit-transition: opacity 0.3s, -webkit-transform 0.3s;
    transition: opacity 0.3s, -webkit-transform 0.3s;
    transition: transform 0.3s, opacity 0.3s;
    transition: transform 0.3s, opacity 0.3s, -webkit-transform 0.3s;
    -webkit-transition-timing-function: cubic-bezier(0.75, 0, 0.125, 1);
    transition-timing-function: cubic-bezier(0.75, 0, 0.125, 1);
}

.hi-btn.hi-btn-main {
    --text-color: #fff;
    --background-color: var(--main-color);
}

.hi-btn-group .hi-btn+.hi-btn {
    margin-left: .24rem;
}

@media (any-hover: hover) {
    .hi-btn:hover {
        background-color: var(--main-color);
        color: var(--background-color);
    }

    .hi-btn:hover::before {
        -webkit-transform: scale3d(1, 1, 1);
        transform: scale3d(1, 1, 1);
        opacity: 1;
    }

    .hi-btn.hi-btn-main:hover {
        background-color: #fff;
        color: var(--main-color);
    }
}