/* 第一部分样式 */
.about-section1 {
    background-image: url('/static/images/about/about_bg1.jpg');
    background-size: cover;
    background-position: center;
    height: 500px;
    display: flex;
    align-items: center;
}

.about-section1-content {
    width: 90%;
    margin: 0 auto;
    position: relative;
}

.about-section1-left {
    width: 49%;
    position: relative;
}

    .about-section1-left h1 {
        font-size: 28px;
        font-weight: 500;
        line-height: 50px;
        color: #1F5C95;
        margin-bottom: 30px;
    }

    .about-section1-left p {
        font-size: 16px;
        line-height: 2;
        font-weight: 500;
        color: #333;
        margin-bottom: 10px;
        text-align: justify;
    }

.about-section1-right {
    width: 40%;
    position: relative;
}

    .about-section1-right img {
        width: 100%;
        height: auto;
    }

.about-video-play-btn {
    position: absolute;
    bottom: 20px;
    left: 20px;
    font-size: 36px;
    color: white;
    cursor: pointer;
}

.about-video {
    display: none;
    width: 100%;
    height: auto;
}

.about-section1 .s1ddao {
    background: url('/static/images/icon_ddao.png') no-repeat;
    width: 31px;
    height: 24px;
    background-size: contain;
    position: absolute;
    top: -40px;
    left: 0px;
}

/* 第二部分样式 */
.about-section2 {
    background-image: url('/static/images/about/about_bg2.jpg');
    background-size: cover;
    background-position: center;
    height: 600px;
    position: relative;
    display: flex;
    align-items: center;
}

.about-section2-content {
    width: 90%;
    margin: 0 auto;
}

.about-section2-left {
    width: 45%;
    position: relative;
}

    .about-section2-left .img {
        width: 100%;
        height: auto;
        border-radius: 10px;
        background-image: url('/static/images/about/left_img1.png');
        background-size: cover;
        background-position: center;
        height: 400px;
    }

.about-section2-right {
    width: 45%;
    position: relative;
}

    .about-section2-right h2 {
        font-size: 28px;
        font-weight: 500;
        color: #1F5C95;
        line-height: 50px;
        margin-bottom: 10px;
    }

    .about-section2-right p {
        font-size: 16px;
        color: #333;
    }

.about-section2-overlay {
    position: absolute;
    right: 0;
    top: 42%;
    background: #fff;
    border-radius: 10px;
    width: 760px;
}

    .about-section2-overlay img {
        width: 660px;
        height: auto;
    }

/* 第三部分样式 */
.about-section3 {
    width: 90%;
    margin: 100px auto 50px;
    background-image: url('/static/images/about/cooper.png');
    background-size: contain;
    background-position: center;
    height: 500px;
}

/* 第四部分样式 */
.about-section4 {
    background-image: url('/static/images/about/dt1.jpg');
    background-size: cover;
    background-position: center;
    height: 600px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.about-section4-content {
    width: 90%;
    margin: 0 auto;
}

.about-section4 h2 {
    font-size: 28px;
    font-weight: 500;
    color: #1F5C95;
    margin-bottom: 50px;
}

.about-section4-box {
    border: solid 2px #C7E4FF;
    border-top-left-radius: 35px;
    border-bottom-right-radius: 35px;
    padding: 30px;
    width: 45%;
    box-shadow: 0 1px 2px -2px rgba(0,0,0,.15),0 3px 6px rgba(0,0,0,.12),0 5px 12px 4px rgba(0,0,0,.1);
}

    .about-section4-box ul {
        list-style-type: none;
        padding: 0;
    }

    .about-section4-box li {
        margin: 5px 0px 8px;
        font-size: 16px;
        line-height: 2;
    }

        .about-section4-box li span {
            margin-right: 10px;
        }

        .about-section4-box li img {
            margin-right: 20px;
            width: 30px;
            height: 20px;
            padding: 0 5px;
        }

        .about-section4-box li i {
            color: #3484CF;
            margin-right: 10px;
            font-weight: 700;
        }

.about-section4-bott {
    background: url('/static/images/about/dt2.png') no-repeat;
    height: 114px;
    width: 100%;
    background-size: contain;
    margin-top: 50px;
}

/*第五部分*/
.about-section5 {
    margin: 50px auto 70px;
}

    .about-section5 .item-title {
        font-size: 28px;
        font-weight: 500;
        color: #333;
        text-align: center;
    }

        .about-section5 .item-title .section-line {
            width: 64px;
            margin: 30px auto 32px;
            border-bottom: 4px solid;
        }

        .about-section5 .item-title .section-line {
            border-color: #dbba6e;
        }

    .about-section5 .honur {
        background-image: url('/static/images/about/about_honur.jpg');
        background-size: contain;
        background-position: center;
        background-repeat: no-repeat;
        width: 100%;
        margin: 0 auto;
        height: 180px;
        position: relative;
        display: flex;
        align-items: center;
    }

/*video*/
.videowarp2 {
    cursor: pointer;
    position: relative;
}

    .videowarp2 video {
        min-height: 240px;
        min-width: 426px;
        max-height: 600px;
    }

    .videowarp2 .videobtn {
        background: url(/static/images/play_circle.png) no-repeat;
        width: 40px;
        height: 40px;
        background-size: 100%;
        position: absolute;
        left: 20px;
        bottom: 20px;
    }

.newvideobg {
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

/*list*/
.fllist {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    text-align: center;
    width: 90%;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

    .fllist li {
        width: calc(25% - 10px); /* 一行 5 个，每个占 20%，减去间距 */
        margin-bottom: 30px;
        margin-top: 30px;
        margin-right: 10px; /* 右侧间距 */
        text-align: center;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: transform 0.3s;
    }

        .fllist li:hover {
            transform: translate3d(0,-5px,0);
            -webkit-transform: translate3d(0,-5px,0);
            transition: all .3s ease;
        }

        .fllist li:nth-child(5n) {
            margin-right: 0; /* 每行第 5 个元素右侧无间距 */
        }

        .fllist li img {
            width: 70px;
            height: auto;
            display: block;
            cursor: pointer;
        }