/* ------------------------banner--------------------------- */

.banner {
    width: 100%;
    overflow: hidden;
}

.banner img {
    width: 100%;
    object-fit: cover;
}

/* ------------------------sun-nav--------------------------- */

.sun-nav {
    width: 100%;
    height: 60px;
    background-color: rgba(255, 255, 255, 0.9);
    position: absolute;
    margin-top: -60px;
}

.sun-nav ul {
    text-align: center;
    font-size: 0;
}

.sun-nav ul li {
    display: inline-block;
    width: 600px;
    text-align: center;
    font-size: 16px;
    color: #171717;
    line-height: 60px;
    cursor: pointer;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    -khtml-user-select: none;
    user-select: none;
}

.sun-nav-active {
    background-color: #1ab2a9;
    color: #fff !important;
}

.sun-nav ul li:hover {
    background-color: #1ab2a9;
    color: #fff;
}

/* --------------------------------matter-list--------------------------------- */

.matter-box {
    width: 100%;
}

.matter-list {
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    padding: 20px 0 30px 0;
}

.list-top {
    width: 100%;
    margin: 60px 0 60px 0;
    overflow: hidden;
}

.list-top ul li {
    float: left;
    height: 420px;
    overflow: hidden;
}

.list-top ul li:nth-child(1) {
    width: 32.9%;
}

.list-top ul li:nth-child(1) img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 1s ease-in-out;
}

.list-top ul li:nth-child(1) img:hover {
    transform: scale(1.1);
}

.list-top ul li:nth-child(2) {
    width: 67.1%;
}

.list-top ul li:nth-child(2) h1 {
    font-size: 20px;
    color: #151515;
    width:100%;
    margin-left: 2%;
    /*overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;*/
    margin-top: 20px;
}

.list-top ul li:nth-child(2) h1:hover {
    color: #1ab2a9;
}

.list-top ul li:nth-child(2) h2 {
    font-size: 14px;
    color: #a4a4a4;
    width: 90%;
    margin-left: 2%;
    line-height: 22px;
    height: 70px;
    word-wrap: break-word;
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    margin-top: 20px;
}

.list-top ul li:nth-child(2) h3 {
    font-size: 18px;
    color: #1b1b1b;
    width: 90%;
    margin-left: 2%;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    margin-top: 10px;
}

.list-top ul li:nth-child(2) h3:hover {
    color: #1ab2a9;
}

.list-top ul li:nth-child(2) h4 {
    width: 80%;
    margin-left: 2%;
    margin-top: 16px;
}

.list-top ul li:nth-child(2) h4 img {
    float: left;
    width: 10px;
    height: 16px;
    vertical-align: middle;
}

.list-top ul li:nth-child(2) h4 p {
    font-size: 14px;
    color: #a4a4a4;
    width: 90%;
    margin-left: 3%;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.list-bottom {
    width: 100%;
    margin: 100px 0 100px 0;
    overflow: hidden;
}

.list-bottom ul li {
    float: left;
    height: 420px;
    overflow: hidden;
}

.list-bottom ul li:nth-child(1) {
    width: 67.1%;
}

.list-bottom ul li:nth-child(1) h1 {
    font-size: 20px;
    color: #151515;
    width:100%;
    margin-left: 2%;
    /*overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;*/
    margin-top: 50px;
}

.list-bottom ul li:nth-child(1) h1:hover {
    color: #1ab2a9;
}

.list-bottom ul li:nth-child(1) h2 {
    font-size: 14px;
    color: #a4a4a4;
    width: 90%;
    margin-left: 2%;
    line-height: 22px;
    height: 70px;
    word-wrap: break-word;
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    margin-top: 20px;
}

.list-bottom ul li:nth-child(1) h3 {
    font-size: 18px;
    color: #1b1b1b;
    width: 80%;
    margin-left: 2%;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    margin-top: 10px;
}

.list-bottom ul li:nth-child(1) h3:hover {
    color: #1ab2a9;
}

.list-bottom ul li:nth-child(1) h4 {
    width: 80%;
    margin-left: 2%;
    margin-top: 16px;
}

.list-bottom ul li:nth-child(1) h4 img {
    float: left;
    width: 10px;
    height: 16px;
    vertical-align: middle;
}

.list-bottom ul li:nth-child(1) h4 p {
    font-size: 14px;
    color: #a4a4a4;
    width: 90%;
    margin-left: 3%;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.list-bottom ul li:nth-child(2) {
    width: 32.9%;
}

.list-bottom ul li:nth-child(2) img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 1s ease-in-out;
}

.list-bottom ul li:nth-child(2) img:hover {
    transform: scale(1.1);
}




/* -------------------------PC端--------------------------- */

@media all and (max-width:1700px) {}

@media all and (max-width:1460px) {}

@media all and (max-width:1380px) {}

@media all and (max-width:1300px) {}

@media all and (max-width:1280px) {}

@media all and (max-width:1240px) {
    .sun-nav ul li {
        width: 300px;
    }
    .matter-list {
        width: 100%;
    }
}

/* ------------------------手机端-------------------------- */

@media all and (max-width:900px) {
    .sun-nav {
        width: 100%;
        height: auto;
        position: relative;
        margin-top: 0px;
    }
    .sun-nav ul li {
        display: block;
        float: left;
        width: 50%;
        font-size: 16px;
        line-height: 50px;
        border-bottom: 1px solid #f3f3f3;
    }
    .matter-list {
        width: 96%;
        margin-left: 2%;
    }
    .list-top {
        margin: 20px 0 20px 0;
    }
    .list-top ul li:nth-child(1) {
        width: 100%;
		height: 250px;
    }
    .list-top ul li {
        height: auto;
    }
    .list-top ul li:nth-child(2) {
        width: 100%;
    }
    .list-bottom {
        margin: 30px 0 30px 0;
    }
    .list-bottom ul li:nth-child(1) {
        width: 100%;
    }
    .list-bottom ul li {
        height: auto;
    }
    .list-bottom ul li:nth-child(2) {
        width: 100%;
        margin-top: 30px;
		height: 250px;
    }
}