@charset "utf-8";
html,body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
    font-size: 14px;
    height: 100%;
    margin: 0;
    padding: 0;
    color: rgba(0, 0, 0, 0.65);
    background-color: rgba(0, 0, 0, 0.94);
}
/*公共样式*/
*,::before,::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}
a{
    background: transparent;
    text-decoration: none;
    outline: none;
    color: rgba(0, 0, 0, 0.65);
}
ul,ol {list-style: none}
.fl {float: left}
.fr {float: right}
.clearFix::before,
.clearFix::after {
    content: '';
    display: block;
    line-height: 0;
    height: 0;
    clear: both;
    visibility: hidden;
}
.clearFix {zoom: 1}
.w-max {
    max-width: 1200px;
    margin: auto;
}

/* header */
header {
    width: 100%;
    padding: 15px 15px 0 15px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    grid: "logo nav searchbox" / max-content auto max-content;
    height: 66px;
    line-height: 66px;
}
.logo-text {
    font-family: Andale Mono,Lucida Grande,Lucida Sans Unicode,Lucida Sans,Geneva,Arial,sans-serif;
    font-size: 21px;
    font-weight: 500;
    color: rgb(238, 238, 238);
    letter-spacing: -1px;
    text-transform: uppercase;
    margin-left: 5px;
}
.logo img{
    width: 35px;
    vertical-align: middle;
    margin-top: -10px;
}
.logo-tel {
    font-size: 22px;
    color: rgba(0,0,0,.65);
}
.logo-tel img {
    width: 30px;
    vertical-align: middle;
    margin-top: -10px;
}
.tel-number {
    font-size: 30px;
    /*color: #2f54eb;*/
    color: rgb(238, 238, 238);
    font-weight: bold;
    letter-spacing: 3px;
    margin-left: 5px;
}
.tel-span {
    margin-left: 5px
}
.about a {
    color: #ccc;
    font-weight: bold;
}
.logo a:hover {
    color: rgb(238, 238, 238);
}
/* header end */

.menu {
    background: #409EFF;
    padding: 0 24px;
    width: 100%;
    height: 66px;
    line-height: 66px;
    color: #FFFFFF;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    margin: 20px auto auto;
}
.menu ul {
}
.menu ul li {
    float: left;
    width: 20%;
}
.menu ul li a {
    color: #FFFFFF;
}

/*.menu .active {
    color: #1890ff;
    !*border-bottom: 4px solid #025daf;*!
}*/
.menu .active a {
    color: #025daf;
}
.menu li:hover {
    /*border-bottom: 2px solid #1890ff;*/
    transition: color 0.3s cubic-bezier(0.645, 0.045, 0.355, 1),
    border-color 0.3s cubic-bezier(0.645, 0.045, 0.355, 1),
    background 0.3s cubic-bezier(0.645, 0.045, 0.355, 1),
    padding 0.15s cubic-bezier(0.645, 0.045, 0.355, 1);
}
.menu a:hover {
    color: #025daf;
    transition: color 0.3s cubic-bezier(0.645, 0.045, 0.355, 1),
    border-color 0.3s cubic-bezier(0.645, 0.045, 0.355, 1),
    background 0.3s cubic-bezier(0.645, 0.045, 0.355, 1),
    padding 0.15s cubic-bezier(0.645, 0.045, 0.355, 1);
}
.menu li a {
    color: #ffffff;
}

/* item */
.video-item {
    width: 25%;
    height: 450px;
    float: left;
    padding: 10px;
    position: relative;
    z-index: 1;
    border-radius: 6px;
}
.video-item-box {
    height: 400px;
}
.video-item img{
    width: 100%;
    height: 100%;
    transition: transform 0.3s;
    object-fit: cover;
    top: 0;
    left: 0;
    /*transform-origin: center;*/
    border: 0;
    vertical-align: middle;
    border-radius: 8px;
}
.video-title {
    color: #ffffff;
    height: 50px;
    line-height: 50px;
    font-size: 14px;
}
/* item end */

footer {
    width: 100%;
    height: 50px;
    line-height: 50px;
    font-size: 14px;
    text-align: center;
    color: rgb(238, 238, 238);
}
.tel-fixed {
    position: fixed;
    background-color: #2f54eb;
    /*color: #2f54eb;*/
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 6px rgb(0 0 0 / 12%);
    cursor: pointer;
    z-index: 5;
    right: 20px;
    bottom: 120px;
}
.tel-text {
    position: fixed;
    color: #2f54eb;
    width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 6px rgb(0 0 0 / 12%);
    cursor: pointer;
    z-index: 5;
    right: 0;
    bottom: 180px;
}
.tel-fixed img {
    width: 30px;
}

/* 移动端 */
@media screen and (max-width: 1500px) {
    .video-item {
        width: 20%;
    }
}
@media screen and (max-width: 1200px) {
    .video-item {
        width: 25%;
    }
}
@media screen and (max-width: 900px) {
    .video-item {
        width: 33.33%;
    }
    header {
        display: block;
        line-height: 1.2;
        height: 110px;
    }
    .tel-container {
        display: block;
    }
    /*.about {
        float: right;
    }*/
}
/* 移动端 */
@media screen and (max-width: 700px) {
    .video-item {
        width: 50%;
        height: 300px;
    }
    .video-item-box {
        height: 250px;
    }
}