normalize article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
nav,
section,
summary,
img {
    display: block;
}

html {
    font-size: 100%;
    -ms-text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
}

html,
button,
input,
select,
textarea {
    font-family: "微软雅黑";
}

body,
div,
h1,
h2,
h3,
h4,
h5,
h6,
p,
input,
ul,
li,
dl,
dt,
dd {
    margin: 0;
}

html {
    font-size: 16px;
    line-height: 1.4em;
    color: #333;
    font-family: "Microsoft YaHei", "微软雅黑";
}

a {
    color: #333;
    text-decoration: none;
}

a:link,
a:visited {
    color: #333;
}

a:hover,
a:active {
    color: #1997ef;
    outline: 0;
    text-decoration: none;
}

a:focus {
    outline: none;
}

a {
    /* IE下去掉超链接获取焦点时产生的虚框 */
    noFocusLine: expression(this.onFocus=this.blur());
}

img {
    border: 0;
    -ms-interpolation-mode: bicubic;
}

form {
    margin: 0;
}

button,
input,
select,
textarea {
    font-size: 100%;
    margin: 0;
    vertical-align: baseline;
    *vertical-align: middle;
}

button,
input {
    line-height: normal;
}

button,
select {
    text-transform: none;
}

textarea {
    overflow: auto;
    vertical-align: top;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

input {
    border: 0px;
    outline: 0px;
}

.clear {
    clear: both;
}

.clearfix::after {
    content: ".";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}

* html .clearfix {
    zoom: 1
}

.left {
    float: left;
}

.right {
    float: right;
}

body {
    font-size: 14px;
    text-align: center;
}

@media only screen and (max-width:1161px) {

    html,
    body {
        width: 1160px;
        overflow-x: hidden;
    }
}


#header {
    max-width: 1920px;
    margin: 0 auto;
    width: 100%;
    background: url(../images/bg.jpg) center top no-repeat;
    text-align: center;
    overflow: hidden;
}

#head {
    position: relative;
    width: 1160px;
    height: 880px;
    margin: 0 auto;
    overflow: hidden;
}

#head h1 {
    display: none;
    width: 0;
    height: 0;
    font-size: 0;
    line-height: 0;
    text-indent: -9999em;
}


.main {
    width: 100%;
    padding: 60px 0 0;
    margin-bottom: 50px;
    text-align: center;
}

.introduction {
    width: 1100px;
    height: 300px;
    margin: 0 auto;
    background: url(../images/bg-introduction.png) center center no-repeat;
    text-align: justify;
}

.introduction p {
    padding: 60px 70px 20px;
    font-size: 20px;
    line-height: 36px;
    text-indent: 2em;
}


/* AI精品案例 */
.ai-content {
    width: 1100px;
    margin: 50px auto;
    text-align: left;
}

.ai-title {
    width: 1100px;
    overflow: hidden;
}

.fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0px 0px 15px #ceeaff;
    text-align: center;
    z-index: 9999;
}

.ai-title ul {
    width: 1100px;
    margin: 20px auto;
}

.ai-title ul li {
    float: left;
    width: 157px;
    height: 75px;
    transition: .5s;
    -webkit-transition: .5s;
    -moz-transition: .5s;
    -ms-transition: .5s;
    -o-transition: .5s;
}

.ai-title ul li.on,
.ai-title ul li:hover {
    background: url(../images/bg-ai-title.png) center center no-repeat;
    cursor: pointer;
}

.ai-title ul li.on h4,
.ai-title ul li:hover h4 {
    color: #fff;
}

.ai-title ul li h4 {
    color: #666;
    font-size: 22px;
    line-height: 75px;
    text-align: center;
}

.ai-title ul li:last-of-type h4 {
    letter-spacing: 10px;
    text-indent: 10px;
}

.aiList ul {
    width: 1140px;
    margin-top: 10px;
}

.aiList ul li {
    float: left;
    box-sizing: border-box;
    width: 530px;
    height: 530px;
    padding: 20px;
    margin-right: 40px;
    margin-bottom: 40px;
    background: #e7f6ff;
}

.aiList ul li .scale-img {
    position: relative;
    width: 490px;
    height: 290px;
}

.aiList .scale-img .mask {
    display: none;
    position: absolute;
    top: 0px;
    left: 0px;
    width: 490px;
    height: 290px;
    background: rgba(25, 191, 239, 0.85);
    line-height: 160px;
    text-align: center;
    overflow: hidden;
}

.aiList ul li:hover .scale-img .mask {
    display: block;
}

.aiList .scale-img .mask .list {
    display: inline-block;
    vertical-align: middle;
    padding: 20px;
    margin: 0 auto;
}

.aiList .scale-img .mask .list h5,
.aiList .scale-img .mask .list h5 a,
.aiList .scale-img .mask .list h5 a:link {
    color: #fff;
    font-size: 20px;
    line-height: 36px;
    /* 字体阴影 */
    text-shadow: 0px 1px 3px rgba(22, 57, 137, 0.5);
}

.aiList .scale-img .mask i.visible {
    display: inline-block;
    vertical-align: middle;
    width: 0px;
    height: 100%;
}

.aiList .title {
    height: 65px;
    padding-bottom: 45px;
    margin-bottom: 20px;
    border-bottom: 1px dashed #999;
}

.aiList .title i.visible {
    display: inline-block;
    vertical-align: middle;
    width: 0px;
    height: 100%;
}

.aiList .title h5 {
    display: inline-block;
    vertical-align: middle;
    *display: inline;
    *zoom: 1;
    width: 390px;
    font-size: 18px;
    line-height: 24px;
    text-align: left;
}

.aiList .title h5 a {
    display: inline;
    vertical-align: middle;
    color: #333;
    font-size: 18px;
    font-weight: normal;
    line-height: 24px;
    /* text-align: left; */
}

.aiList .title h5 a:hover {
    color: #0a8796;
}

.aiList .number {
    float: left;
    width: 65px;
    height: 80px;
    margin-right: 10px;
    margin-left: 20px;
    background: url(../images/bg-number.png) center top no-repeat;
    color: #fff;
    font-size: 24px;
    line-height: 65px;
    text-align: center;
}

.aiList ul li p {
    font-size: 14px;
    line-height: 30px;
}


/* 图片放大效果 */
.scale-img {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.scale-img img {
    width: 100%;
    height: 100%;
    -webkit-object-fit: cover;
    object-fit: cover;
    transition: .5s all linear;
    -ms-transition: .5s all linear;
    /* IE 9 */
    -moz-transition: .5s all linear;
    /* Firefox */
    -webkit-transition: .5s all linear;
    /* Safari 和 Chrome */
    -o-transition: .5s all linear;
    /* Opera */
}

.scale-img:hover img {
    transform: scale3d(1.1, 1.1, 1.1);
    -ms-transform: scale3d(1.1, 1.1, 1.1);
    -moz-transform: scale3d(1.1, 1.1, 1.1);
    -webkit-transform: scale3d(1.1, 1.1, 1.1);
    -o-transform: scale3d(1.1, 1.1, 1.1);
}