.ai-nav-box {
    position: fixed;
    right: 0;
    bottom: 180px;
    z-index: 999;
    transition: .5s;
}

.ai-nav-box:hover {
    bottom: 170px;
}

.ai-nav-box .ai-nav-toggle {
    overflow: hidden;
    width: 148px;
    position: relative;
    height: 170px;
}

.ai-nav-box:hover .ai-nav-toggle {
    display: none;
}

.ai-nav-box .ai-nav-toggle .ai-nav-toggle-tip {
    width: 140px;
}

.ai-nav-box .ai-nav-toggle .ai-nav-toggle-lead {
    height: 135px;
    position: absolute;
    right: -50px;
    transform: rotate(-45deg);
}

.ai-nav-box .ai-nav {
    width: 240px;
    height: 420px;
    position: relative;
    display: none;
}

.ai-nav-box:hover .ai-nav {
    display: block;
}

.ai-nav-box .ai-nav::before {
    position: absolute;
    content: '';
    width: 200%;
    height: 100%;
    left: 0;
    top: -20px;
    border-radius: 50% 0 0 50%;
}

.ai-nav-box .ai-nav .ai-nav-img-box {
    height: 135px;
    position: absolute;
    right: 20px;
    top: 130px;
}
.ai-nav-img{
    /*margin-top: 10px;*/
}
.ai-nav-box .ai-nav .ai-nav-img-box img {
    height: 100%;
}

.ai-nav-box .ai-nav .ai-nav-item {
    position: absolute;
    font-size: 14px;
    text-align: center;
    color: black;
    width: 70px;
    height: 80px;
    padding-top: 50px;
    right: 40px;
    top: 40px;
    text-decoration:none;
    background-repeat: no-repeat;
    background-position: center 0;
    background-size: 50px;
}

.ai-nav-box .ai-nav .ai-nav-item:hover {
    font-weight: bold;
}

.ai-nav-box .ai-nav .ai-nav-item.nav-1 {
    right: 65px;
    top: 60px;
    background-image: url('icon/1.png');
}

.ai-nav-box .ai-nav .ai-nav-item.nav-2 {
    right: 135px;
    top: 95px;
    background-image: url('icon/2.png');
}

.ai-nav-box .ai-nav .ai-nav-item.nav-3 {
    right: 160px;
    top: 175px;
    background-image: url('icon/3.png');
}

.ai-nav-box .ai-nav .ai-nav-item.nav-4 {
    right: 130px;
    top: 250px;
    background-image: url('icon/4.png');
}

.ai-nav-box .ai-nav .ai-nav-item.nav-5 {
    right: 55px;
    top: 280px;
    background-image: url('icon/5.png');
}

.ai-nav-box .ai-nav .ai-nav-item.nav-6 {
    right: 40px;
    top: 275px;
    background-image: url('icon/6.png');
}




.ai-nav-box .ai-nav .ai-nav-item.nav-1:hover {
    background-image: url('icon/1_act.png');
}

.ai-nav-box .ai-nav .ai-nav-item.nav-2:hover {
    background-image: url('icon/2_act.png');
}

.ai-nav-box .ai-nav .ai-nav-item.nav-3:hover {
    background-image: url('icon/3_act.png');
}

.ai-nav-box .ai-nav .ai-nav-item.nav-4:hover {
    background-image: url('icon/4_act.png');
}

.ai-nav-box .ai-nav .ai-nav-item.nav-5:hover {
    background-image: url('icon/5_act.png');
}

.ai-nav-box .ai-nav .ai-nav-item.nav-6:hover {
    background-image: url('icon/6_act.png');
}

@media screen and (max-width: 768px) {
    .ai-nav-box {
        display: none;
    }
}