.banner {
    width: 100%;
    height: 500px;
    background: url("/liuxue/img/pc/tutor/banner.png") no-repeat center;
    background-size: cover;
    text-align: left;
}

.banner h4 {
    font-size: 26px;
    color: #575762;
    opacity: .45;
    letter-spacing: 1px;
    margin: 72px 0 15px 0;
}

.banner h2 {
    font-size: 72px;
    font-weight: bold;
    color: #757881;
    letter-spacing: 4px;
    margin-bottom: 25px;
}

.banner h3 {
    font-size: 18px;
    font-weight: 500;
    color: #757881;
    letter-spacing: 1px;
}


/* 页面位置 */

.box {
    width: 1170px;
    margin: 0 auto;
    font-size: 0;
    position: relative;
    z-index: 2;
}

.btn {
    cursor: pointer;
}


/* 导师体系 */

.tutors {
    width: 100%;
    padding-bottom: 214px;
    position: relative;
}

.tutorBox {
    height: 540px;
    position: relative;
}

.tutorBoxs {
    margin-top: 61px;
}

.tutorBox .clearfix {
    width: 100%;
    position: relative;
}

.tutorBox .fr strong,
.tutorBoxs .fl strong {
    font-size: 26px;
    color: #4E4E4E;
    font-weight: bold;
    display: block;
    margin: 0px 0 30px 0;
}

.tutorBox .fr span,
.tutorBoxs .fl span {
    display: inline-block;
    padding-right: 148px;
    font-size: 16px;
    line-height: 30px;
    color: #5F5F5F;
}

.tutorBox .fr p i,
.tutorBoxs .fl p i {
    display: inline-block;
    width: 44px;
    height: 8px;
    background: url(/liuxue/img/index/arrow2.png) no-repeat center;
    background-size: cover;
    vertical-align: middle;
    margin-left: 10px;
    transition: all .5s;
}

.tutorBox .fr p:hover,
.tutorBoxs .fl p:hover {
    background: #0d6efd;
}

.tutorBox .fr p:hover i,
.tutorBoxs .fl p:hover i {
    transform: translateX(10px);
}

.tutorBox .fl,
.tutorBoxs .fr {
    width: 461px;
    height: 538px;
    position: relative;
}

.tutorBox .fl img,
.tutorBoxs .fr img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 3;
}

.tutorBox .fr,
.tutorBoxs .fl {
    width: calc( 100% - 461px - 85px);
    height: calc( 540px - 70px);
    padding: 70px 0 0 85px;
    background: #fff;
    border-radius: 0 8px 8px 0;
    position: relative;
}

.tutorBoxs .fl {
    border-radius: 8px 0 0 8px;
}

.tutorBox .fr p,
.tutorBoxs .fl p {
    width: 180px;
    height: 48px;
    background: #3d8bfd;
    border-radius: 8px;
    font-size: 18px;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all .5s;
    cursor: pointer;
    margin-top: 80px;
}

.tutorBox .fl p:nth-of-type(1) {
    display: inline-block;
    width: 312px;
    height: 312px;
    background: rgba(158, 163, 175, .4);
    border-radius: 50%;
    position: absolute;
    left: 0;
    bottom: 0;
    z-index: -1;
    box-shadow: 0px 3px 28px rgba(198, 201, 208, .2), inset 0px 2px 3px rgba(198, 201, 208, 0.7);
    -webkit-animation: float ease-in-out 3.5s infinite;
    animation: float ease-in-out 3.5s infinite;
}

.tutorBoxs .fr p:nth-of-type(1) {
    display: inline-block;
    width: 200px;
    height: 200px;
    background: rgba(158, 163, 175, .4);
    border-radius: 50%;
    position: absolute;
    left: 50px;
    bottom: 55px;
    z-index: -1;
    box-shadow: 0px 3px 28px rgba(198, 201, 208, .2), inset 0px 2px 3px rgba(198, 201, 208, 0.7);
    -webkit-animation: float ease-in-out 3.5s infinite;
    animation: float ease-in-out 3.5s infinite;
}

.tutorBox .fl p:nth-of-type(2) {
    display: inline-block;
    width: 42px;
    height: 42px;
    background: rgba(198, 201, 208, .7);
    border-radius: 50%;
    position: absolute;
    right: 52px;
    bottom: 171px;
    z-index: 5;
    box-shadow: 0px 3px 28px rgba(198, 201, 208, .2), inset 0px 2px 3px rgba(198, 201, 208, 0.7);
    -webkit-animation: float ease-in-out 2s infinite;
    animation: float ease-in-out 2s infinite;
}

.tutorBoxs .fr p:nth-of-type(2) {
    display: inline-block;
    width: 42px;
    height: 42px;
    background: rgba(198, 201, 208, .7);
    border-radius: 50%;
    position: absolute;
    right: 0px;
    top: 154px;
    z-index: 5;
    transition: all .5s;
    box-shadow: 0px 3px 28px rgba(198, 201, 208, .2), inset 0px 2px 3px rgba(198, 201, 208, 0.7);
    -webkit-animation: float ease-in-out 2s infinite;
    animation: float ease-in-out 2s infinite;
}

@-webkit-keyframes float {
    0% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
    50% {
        -webkit-transform: translateY(10px);
        transform: translateY(10px);
    }
    100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}

@keyframes float {
    0% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
    50% {
        -webkit-transform: translateY(10px);
        transform: translateY(10px);
    }
    100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}