.introduce {
    background: url('../imgs/introduce-bg.png') no-repeat top center;
    background-size: cover;
}

.introduce .content img {
    display: block;
    margin: 0 auto;
    max-width: 70%;
}

.introduce .content p {
    font-size: 16px;
    color: #333333;
    text-indent: 2em;
    line-height: 28px;
    margin-top: 40px;
}

.introduce-box {
    padding: 50px 0px;
}

.introduce-box h5 {
    font-size: 28px;
    padding: 5px 0px;
    font-weight: normal;
    color: #333;
    line-height: 1.3;
    padding-left: 15px;
    border-left: 4px solid #D4B584;
}

.introduce-box span {
    display: block;
    margin-bottom: 5px;
    font-size: 24px;
}

.introduce-box ul {
    border-top: 1px solid #B6B6B6;
}

.introduce-box ul li {
    position: relative;
    transition: all 0.5s linear;
    border-bottom: 1px solid #B6B6B6;
}

.introduce-box ul li a {
    display: block;
    padding: 25px 50px;
}

.introduce-box ul li:hover {
    /* background: url('../imgs/introduce-hover.png') no-repeat; */
    /* background-size: 100% 100%; */
    background: #712525;
}

.introduce-box ul li:hover h6 {
    color: #fff;
}

.introduce-box ul li:hover i {
    display: block;
}

.introduce-box ul li img {
    float: left;
    margin-right: 15px;
}

.introduce-box ul li h6 {
    font-size: 28px;
    color: #333;
}

.introduce-box ul li i {
    position: absolute;
    right: 40px;
    top: 30px;
    color: #fff;
    font-size: 14px;
    display: none;
}

.introduce-box ul li hr {
    width: 40px;
    margin: 0px;
    margin-right: 10px;
    position: relative;
    top: -5px;
    display: inline-block;
}

.opera-content h1 {
    font-size: 40px;
    color: #333333;
    line-height: 1.5;
}

.opera-box {
    cursor: pointer;
    text-align: center;
    margin-top: 70px;
    height: 140px;
}

.opera-left {
    min-height: 400px;
    position: relative;
}

.filter {
    filter: blur(10px);
    opacity: 0.4;
}

.opera-mask {
    z-index: 1000;
    position: absolute;
    height: 100%;
    width: 100%;
    left: 0px;
    top: 0px;
    display: none;
} 

.opera-mask h4 {
    padding-bottom: 25px;
    font-size: 32px;
    color: #333333;
    line-height: 32px;
    border-bottom: 1px solid #979797;
}

.opera-performer {
    margin: 0 auto;
    margin-top: 20px;
    text-align: center;
}

.opera-performer-img {
    /* height: 120px; */
    width: 120px;
    border-radius: 100%;
    max-width: 100%;
    margin: 0 auto;
    overflow: hidden;
    margin-bottom: 20px;
}

.opera-performer-img:hover img {
    transform: scale(1.2);
}

.opera-performer-img img {
    height: 100%;
    width: 100%;
    transition: all 0.3s linear;
}

.opera-performer h5 {
    font-size: 20px;
    color: #333333;
    line-height: 28px;
    margin-bottom: 5px;
}

.opera-performer span {
    font-size: 16px;
    color: #999999;
    line-height: 28px;
}

.opera-mask h4 i {
    font-size: 16px;
    padding-right: 15px;
    cursor: pointer;
    font-weight: normal;
}

.opera-left .opera-img {
    max-width: 100%;
}

.o1:hover {
    content: url(../imgs/o1-hover.png);
}

.o2:hover {
    content: url(../imgs/o2-hover.png);
}

.o3:hover {
    content: url(../imgs/o3-hover.png);
}

.o4:hover {
    content: url(../imgs/o4-hover.png);
}

.active .o1 {
    content: url(../imgs/o1-hover.png);
}

.active .o2 {
    content: url(../imgs/o2-hover.png);
}

.active .o3 {
    content: url(../imgs/o3-hover.png);
}

.active .o4 {
    content: url(../imgs/o4-hover.png);
}

.opera-in {
    padding: 20px;
    overflow: hidden;
    overflow-y: scroll;
    height: 400px;
}

.opera-in video {
    max-width: 100%;
    margin-bottom: 20px;
}

.opera-in p {
    font-size: 16px;
    color: #333333;
    line-height: 28px;
    margin-bottom: 20px;
}

.opera-box h6 {
    margin-top: 15px;
    font-size: 20px;
    color: #333333;
    line-height: 28px;
}
/* 0322修改 */
.opera-row {
    margin: 0 -30px;
}

.opera-box {
    margin-top: 30px;
}

.opera-title {
    font-size: 20px;
    color: #681515;
    margin-top: 30px;
    line-height: 28px;
    margin-bottom: 15px;
}

.opera-p {
    font-size: 14px;
    color: #999999;
    line-height: 24px;
    margin: 30px auto;
    width: 300px;
    max-width: 100%;
}

.opera-performer {
    text-align: left;
    margin: 0px;
    margin-bottom: 15px;
}

.opera-performer a:hover h5 {
    color: #681515;
    text-decoration: underline;
}

/* 0322修改 */

@media (max-width: 767px) {
    /* 0322修改 */
    .opera-row {
        margin: 0  -15px;
    }
    /* 0322修改 */

    .introduce-box h5 {
        margin-bottom: 20px;
    }

    .introduce-box ul li a {
        padding: 20px 15px;
    }

    .introduce-box ul li h6 {
        font-size: 20px;
    }

    .opera-in {
        padding: 20px 0;
        margin-top: 20px;
    }

    .opera-left {
        min-height: auto;
        margin-bottom: 30px;
    }

    .opera-mask {
        position: relative;
    }

    .mob-opera  .opera-left .opera-img {
        position: absolute;
        top: 0px;
    }

    .mob-opera .opera-nav {
        display: none;
    }

    .opera-box {
        margin-top: 30px;
    }

    .opera-content h1 {
        font-size: 24px;
    }

    .opera-in {
        overflow: inherit;
        height: auto;
    }
}