body{
    font-family: 'Microsoft YaHei', sans-serif;
}
.mai-icon {
    background: #3896CA;
    color: #fff;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    margin-right: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

/*����*/
.navbar-default{
    margin-bottom: 0;
    border-bottom: 1px solid #e6e6e6;
    background-color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* box-shadow: 0px 2px 8px 0px rgba(50,50,50,0.25); */
}
.navbar-brand {
    height: 76px;
    margin-right: auto;
    display: flex;
    justify-content: center;
    align-items: center;
}
.navbar-default .navbar-nav>li>a {
    font-size: 16px;
    color: #444;
    height: 70px;
    line-height: 35px;
}
.navbar-default .navbar-nav>li>a:hover{color: #3896CA;}
.navbar-toggle{
    margin-top: 17px;
}

.lvjing{
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    padding: 80px 0;
}

/*home*/
.jumbotron1 {
    padding-top: 30px;
    padding-bottom: 30px;
    text-align: center;
    color: #fff;
    background-color: #3896CA;
}

.jumbotron1 h1 {
    color: inherit
}
.jumbotron1 h3 {
    color: inherit
}

.jumbotron1 p {
    margin-bottom: 20px;
    font-size: 21px;
    font-weight: 200
}

.jumbotron1 .container {
    max-width: 100%
}

/*about + competencies*/
#about {
    background: #f8f8f8;
}

#about,
#competencies {
    padding: 80px 0;
}

#about h2,
#competencies h2 {
    font-weight: bold;
}

#about p,
#competencies p {
    line-height: 25px;
}

.d-flex {
    display: flex;
}

.align-items-center {
    align-items: center;
}

.flex-grow-1 {
    flex-grow: 1;
}

/*product*/
#product {
    background: #f8f8f8;
    padding: 60px 0;
    text-align: center;
}
#product h2 {
    font-weight: bold;
    padding-bottom: 60px;
}
#product .col-md-3 {
    margin-bottom: 20px;
}

#product .custom-row {
    display: flex;
    justify-content: space-between;
}

#product .custom-col {
    flex: 0 0 30%;
    max-width: 30%;
}

#product .card {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    height: 460px;
}

#product .card-img-top {
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    height: 300px;
    width: 300px;
}

#product .card-body {
    padding: 20px;
    flex: 1;
}

#product .card-title {
    font-size: 18px;
    margin-bottom: 10px;
}

#product .card-text {
    font-size: 14px;
    color: #666;
}

/*bbs*/
#bbs{
    padding: 80px 0;
    text-align: center;
}
#bbs .row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

#bbs .col-md-4 {
    flex: 0 0 30%;
    max-width: 30%;
    margin-bottom: 20px;
}

#bbs .card {
    background-color: #fff;
    border-radius: 10px;
    border: 1px solid #ccc; /* 添加黑色边线 */
    padding: 20px;
    text-align: center;
    height: 260px;
}

#bbs .card img {
    margin: 0 auto;
    width: 80px;
    height: 80px;
}

/*contact*/
#contact{
    background: url("../images/contact-bg.jpg") no-repeat;
    background-size: cover;
    color: #ffffff;
}
#contact h2{
    font-weight: bold;
    margin-top: 0;
    margin-bottom: 25px;
}
#contact p{
    line-height:24px;
    margin-bottom:2px;
}
#contact .form-control {
    border: none;
    border-radius: 0;
    height: 50px;
    margin-bottom: 20px;
}
#contact textarea.form-control{
    height: auto;
}
#contact input[type="submit"]{
    background: #40D2B1;
    color: #fff;
    font-weight: bold;
    transition: all 0.3s;
}
#contact input[type="submit"]:hover{
    background: rgb(44, 142, 120);
}

/*footer*/
footer{
    font-weight: 400;
    text-align: center;
    padding:20px;
    color:#999;
}