* {
        margin: 0;
        padding: 0;
        font-size: 14px;
        font-family: 微软雅黑, Microsoft YaHei, Arial;
    }
    
    ul {
        list-style: none;
    }
    
    a {
        text-decoration: none;
        color: #000;
    }
    
    body {
        display: flex;
        justify-content: center;
    }
    
    .root {
        padding-top: 50px;
        display: flex;
        flex-direction: column;
        width: 100%;
    }
    
    .btbc,
    .bc,
    .bc2 {
        display: flex;
        width: 100%;
        justify-content: center;
        background-color: #f4f4f4;
    }
    
    .btbc {
        padding: 10px 0 5px 0;
    }
    
    .zpbt {
        max-width: 1200px;
        width: 100%;
        padding: 0 15px;
    }
    
    .zpbt div a,
    .tt {
        font-size: 30px;
        color: #126db1
    }
    
    .zpbt div a:hover {
        color: #00EAFF
    }
    
    .bc {
        padding: 5px 0 10px 0;
    }
    
    .zp,
    .logos {
        display: flex;
        max-width: 1200px;
        justify-content: space-between;
        flex-wrap: wrap;
        margin: 0 auto;
        padding: 0 10px;
    }
    
    .zpt {
        width: 280px;
        background-color: #FFF;
        margin: 10px;
        border: 1px solid #fff;
        min-width: 200px;
    }
    
    .zpt:hover {
        border: 1px solid #00EAFF;
        box-sizing: border-box;
    }
    
    .zp-pic {
        aspect-ratio: 280/158;
    }
    
    .fill-image {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    .zp-tex,
    .kh-tex {
        display: flex;
        align-items: center;
        width: 100%;
        justify-content: center;
        box-sizing: border-box;
    }
    
    .zp-tex {
        padding: 5px 10px;
    }
    
    .zp-tex a {
        font-size: 16px;
    }
    
    .kh-tex {
        font-size: 14px;
        padding-bottom: 10px;
    }
    
    @-moz-document url-prefix() {
        .zp-pic {
            width: 100% !important;
            min-width: 0;
        }
        .fill-image {
            min-width: 100%;
            min-height: 100%;
        }
        .zpt {
            flex-basis: 280px;
        }
    }
    
    .header {
        max-width: 1200px;
        height: 50px;
        display: flex;
        justify-content: space-between;
        flex-grow: 1;
    }
    
    .header-a {
        display: flex;
        padding: 12px 0 0 35px;
    }
    
    .header-a img {
        width: 239px;
        height: 30px;
    }
    
    .header-b {
        display: flex;
        padding-right: 35px;
    }
    
    .header-b a {
        display: flex;
        padding: 18px 30px 11px 30px;
        color: #fff;
    }
    
    .header-b a:hover {
        background-color: #3e3e3e;
        border-bottom: 1px solid #00EAFF;
        box-sizing: border-box;
        color: #00EAFF
    }
    
    .ppt {
        height: auto;
        aspect-ratio: 3 / 1;
        display: flex;
        background-image: url(/images/img1.jpg);
        background-repeat: no-repeat;
        background-position: center top;
        background-size: auto 100%;
    }
    
    .tel {
        display: none;
    }
    
    .zpt,
    .kh {
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        align-items: top;
        flex-grow: 1;
        box-sizing: border-box;
        transition: border-color 0.5s;
        border-radius: 5%;
    }
    
    .kh {
        width: 190px;
        border: 1px solid #f4f4f4;
        min-width: 135px;
    }
    
    .kh-logo,
    .zp-pic {
        width: 100%;
        overflow: hidden;
        flex-shrink: 0;
        border-top-left-radius: 5%;
        border-top-right-radius: 5%;
        background-color: #c6faff;
    }
    
    .kh-logo {
        aspect-ratio: 23/10;
    }
    
    .logo-t {
        width: 100%;
        max-width: 1200px;
        display: flex;
        align-items: center;
        padding: 0 15px;
        margin: 10px 0 5px 0;
    }
    
    .dl {
        flex: 1;
        max-width: 500px;
        height: 1px;
        border-top: 1px dashed #a2a2a2;
    }
    
    .tt {
        font-size: 28px;
        color: #126db1;
        white-space: nowrap;
        padding: 0 10px;
    }
    
    .footline {
        display: flex;
        width: 100%;
        height: 8px;
        background-image: url(/images/top-top.jpg);
        margin-top: 20px;
    }
    
    .foot-bc {
        display: flex;
        width: 100%;
        justify-content: center;
        background-color: #262626;
        color: #FFF;
    }
    
    .foot {
        display: flex;
        width: 100%;
        max-width: 1200px;
        flex-direction: column;
        margin: 0 auto;
        justify-content: left;
    }
    
    .foot div {
        margin: 10px 0 0 20px;
    }
    
    .foot div:nth-child(1) {
        font-size: 20px;
        margin-top: 10px;
    }
    
    .beian a {
        color: #666666;
    }
    
    .beian {
        padding-top: 10px;
    }
    
    .video-main {
        display: flex;
        max-width: 1170px;
        width: 100%;
        margin: 0 auto;
        padding: 15px;
        flex-direction: column;
        box-sizing: border-box;
    }
    
    .video-main div h1 {
        text-align: center;
    }
    
    .video {
        display: flex;
        max-width: 946px;
        aspect-ratio: 946/549;
        background-color: fff;
        border: 1px solid #9a9a9a;
        border-radius: 1.5%;
        margin: 0 auto;
        justify-content: center;
        align-items: center;
        box-shadow: 0 8px 15px rgba(0, 0, 0, 0.4);
        transition: box-shadow 0.3s ease;
        background: linear-gradient(#eff8fa, #FFF);
    }
    
    .video-image {
        display: flex;
        max-width: 896px;
        width: calc(100% - 4px);
        padding: 2px;
        margin: 0 auto;
        flex-direction: column;
    }
    
    .video-image img {
        margin: 15px 0 0 0;
    }
    
    .video:hover {
        box-shadow: 0 12px 20px rgba(0, 0, 0, 0.5);
    }
    
    .video-bg {
        width: 96.8%;
        height: 94.5%;
        display: flex;
        justify-content: center;
        align-items: center;
        padding: 0.02%;
    }
    
    video::-webkit-media-controls-download-button {
        display: none !important;
    }
    
    video::-webkit-media-controls {
        overflow: hidden !important;
    }
    
    video {
        width: 99.5%;
        height: 99.2%;
        display: block;
    }
    
    @media (max-width: 575px) {
        .video-image-bottom {
            display: flex;
            max-width: 1200px;
            height: 35px;
        }
        .foot div:nth-child(1) {
            font-size: 17px;
            margin-top: 10px;
        }
        .zpt {
            width: calc(50% - 4px);
            min-width: auto;
            flex-basis: calc(50% - 4px);
            margin: 2px;
        }
        .zp-tex a {
            font-size: 14px;
        }
        .zpbt div a {
            font-size: 20px;
        }
        .zpbt div {
            font-size: 11px;
        }
        .onoff1,
        .off-logo,
        .header-bc-1 {
            display: none;
        }
        .header {
            justify-content: center;
        }
        .header-b {
            padding-right: 0;
        }
        .header-b a {
            padding: 18px 20px 11px 20px;
        }
        .header-b a:hover {
            background-color: #ffffff00;
            border-bottom: 1px solid #ffffff00;
            box-sizing: border-box;
            color: #7e7e7e;
        }
        .header-bc-2 {
            background: linear-gradient(#ededed, #FFF);
            width: 100%;
            top: 0%;
            left: 0%;
            position: fixed;
            z-index: 11;
            display: flex;
            justify-content: center;
            align-items: center;
            margin-bottom: 20px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        }
        .header-bc-2 a {
            color: #7e7e7e;
            letter-spacing: 2px;
        }
        .tel {
            display: block;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: linear-gradient(#FFF, #ededed);
            padding: 10px 0;
            text-align: center;
            font-size: 14px;
            color: #333;
            box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.1);
            z-index: 10;
        }
        .tel .wechat-link {
            color: #07C160;
            text-decoration: none;
            font-weight: 500;
            cursor: pointer;
        }
        .tt {
            font-size: 20px;
        }
        .logo-t {
            padding: 0 10px;
        }
        .kh {
            width: calc(25% - 7.5px);
            flex-basis: calc(25% - 7.5px);
            margin: 2px 2px 5px 2px;
            min-width: auto;
        }
        .kh-tex {
            font-size: 12px;
        }
        .pc-tel {
            display: none;
        }
        .beian {
            padding-top: 20px;
        }
        .foot-bc {
            background: linear-gradient(#ededed, #FFF);
            color: #7e7e7e;
        }
        .video-main div h1 {
            font-size: 18px;
            margin-bottom: 15px;
            margin-top: 10px;
        }
    }
    
    @media (min-width: 576px) and (max-width: 991px) {
        .header-b a:hover {
            background-color: #ffffff44;
            border-bottom: 1px solid #fff;
            box-sizing: border-box;
            color: #333;
        }
        .zpt {
            width: calc(33.333% - 6px);
            flex-basis: calc(33.333% - 6px);
            min-width: 150px;
            margin: 3px;
        }
        .zp-tex a {
            font-size: 14px;
        }
        .off,
        .off-logo,
        .off-logo2,
        .header-bc-1 {
            display: none;
        }
        .zpbt div a {
            font-size: 25px;
        }
        .header {
            justify-content: center;
        }
        .header-b {
            padding-right: 0;
        }
        .header-b a {
            padding: 18px 20px 11px 20px;
        }
        .header-bc-2 {
            background: linear-gradient(#ededed, #FFF);
            width: 100%;
            top: 0%;
            left: 0%;
            position: fixed;
            z-index: 11;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .header-bc-2 a {
            color: #7e7e7e;
            letter-spacing: 2px;
        }
        .tt {
            font-size: 24px;
        }
        .kh {
            width: calc(20% - 8px);
            flex-basis: calc(20% - 8px);
            margin: 2px 2px 5px 2px;
            min-width: auto;
        }
        .video-main div h1 {
            font-size: 25px;
            margin-top: 15px;
            margin-bottom: 15px;
        }
    }
    
    @media (min-width: 992px) and (max-width: 1199px) {
        .zpt {
            width: calc(33.333% - 6px);
            flex-basis: calc(33.333% - 6px);
            min-width: 150px;
            margin: 3px;
        }
        .zp-tex a {
            font-size: 15px;
        }
        .header-bc-1 {
            background-color: #262626;
            width: 100%;
            top: 0%;
            left: 0%;
            position: fixed;
            z-index: 11;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .off,
        .header-bc-2 {
            display: none;
        }
        .header-b {
            padding-right: 30px;
        }
        .kh {
            width: calc(16.666% - 8.333px);
            flex-basis: calc(16.666% - 8.333px);
            margin: 2px 2px 5px 2px;
            min-width: auto;
        }
        .video-main div h1 {
            font-size: 25px;
            margin-top: 15px;
            margin-bottom: 15px;
        }
    }
    
    @media (min-width: 1200px) {
        .video-main div h1 {
            font-size: 25px;
            margin-top: 15px;
            margin-bottom: 15px;
        }
        .ppt {
            height: 400px;
            width: 100%;
            display: flex;
            background-image: url(/images/img1.jpg);
            background-repeat: no-repeat;
            background-position: center top;
        }
        .zp,
        .logos {
            width: 1200px;
            padding: 0;
        }
        .kh {
            width: calc(16.666% - 8.333px);
            flex-basis: calc(16.666% - 8.333px);
            margin: 2px 2px 5px 2px;
            flex-grow: 0;
            min-width: auto;
        }
        .zpt {
            width: calc(25% - 20px);
            flex-basis: calc(25% - 20px);
            margin: 10px;
            flex-grow: 0;
            min-width: auto;
        }
        .header-bc-1 {
            background-color: #262626;
            width: 100%;
            top: 0%;
            left: 0%;
            position: fixed;
            z-index: 11;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .header-bc-2 {
            display: none;
        }
    }