body{
    font-family: 'Microsoft YaHei', sans-serif;
    padding-top: 70px;
}
.mai-icon{
    background: #38f;
    color: #fff;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    text-align: center;
    line-height: 40px;
    margin-right: 20px;
}
/*µ¼º½*/
.navbar{margin-bottom: 0;border-bottom: 1px solid #e6e6e6;}
.navbar-default{
    background-color: #fff;
    /* box-shadow: 0px 2px 8px 0px rgba(50,50,50,0.25); */
}
.navbar-default .navbar-brand {
    font-size: 30px;
    font-weight: bold;
    color: #38f;
    height: 70px;
    line-height: 35px;padding:0;
}
.navbar-default .navbar-nav>li>a {
    font-size: 16px;
    color: #444;
    height: 70px;
    line-height: 35px;
}
.navbar-default .navbar-nav>li>a:hover{color: #38f;}
.navbar-toggle{
    margin-top: 17px;
}

/* ??????????????????????“??”??? */
@media (max-width: 768px) {
    .navbar-toggle {
        margin-top: 10px;
        margin-right: 10px;
        padding: 10px 12px;
        border: 1px solid #38f;
        background: #38f;
        border-radius: 4px;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .navbar-toggle:focus,
    .navbar-toggle:hover {
        background: #2f70ff;
        border-color: #2f70ff;
    }

    .navbar-toggle .toggle-icon {
        display: inline-block;
    }

    .navbar-toggle .icon-bar {
        background-color: #fff;
    }

    .navbar-toggle .toggle-text {
        display: inline-block;
        color: #fff;
        font-size: 14px;
        line-height: 1;
    }

    /* ??????????????????? */
    .navbar-collapse {
        background: #fff;
        border-top: 1px solid #eee;
        max-height: calc(100vh - 60px);
        overflow-y: auto;
    }

    .navbar-default .navbar-nav {
        margin: 0 -15px;
    }

    .navbar-default .navbar-nav>li>a {
        height: auto;
        line-height: 1.4;
        padding: 14px 18px;
        font-size: 16px;
    }

    .navbar-default .navbar-nav>li + li {
        border-top: 1px solid #f2f2f2;
    }

    .navbar-default .navbar-nav>li>a:active {
        background: #f5f9ff;
    }
}
.banner{text-align:center;color: #fff;background:url(../images/banner.jpg);background-size:100% 100%;}
.lvjing{
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    padding: 80px 0;
}
/*home*/
/* #home{
    margin-top: 70px;
    background: url("../images/home-bg.jpg");
    background-size: cover;
    color: #ffffff;
    text-align: center;
    width: 100%;
}
#home h1{
    font-weight: bold;
    margin-top: 0;
    margin-bottom: 25px;
}
#home p{
    font-weight: 400;
    line-height: 35px;
}
#home img{
    margin-top: 30px;
    display: inline-block;
} */
/*bbs*/
#bbs{
    padding: 80px 0;
    text-align: center;
}
#bbs .col-md-4{
    padding: 15px;
}
#bbs .col-md-4:hover{
    background: #f1f1f1;
    box-shadow: 1px 1px 4px #ccc;
}
#bbs a{
    color: #212121;
    text-decoration: none;
}
#bbs img{
    margin: 0 auto;
}

/*HTML5 + bootstrap*/
#html5{
    background: #f8f8f8;
}
#html5 , #bootstrap{
    padding: 80px 0;
}
#html5 h2 , #bootstrap h2{
    font-weight: bold;
}
#html5 p  , #bootstrap p{
    line-height: 25px;
}

/*course*/
#course{
    background: #f8f8f8;
    padding: 80px 0;
    text-align: center;
}
#course h2{
    font-weight: bold;
    padding-bottom: 60px;
}
#course .col-md-3{
    margin-bottom: 20px;
}
.course {
    background: #ffffff;
    border: 1px solid #eee;
}
#course .btn{
    background: transparent;
    border: 1px solid #38f;
    border-radius: 0px;
    color: #38f;
    margin-top: 20px;
    margin-bottom: 30px;
    padding: 8px 40px;
    transition: all 0.3s;
}
#course .btn:hover{
    background: #38f;
    color: #fff;
}
.course .case-img{width:100%;height:auto;}

/*app*/
#app{
    padding: 80px 0;
}
#app h2{
    font-weight: bold;
    padding-bottom: 30px;
}
#app .btn{
    margin: 10px 0;
    background: rgb(64, 210, 177);
    border-color: rgb(64, 210, 177);
    border-radius: 0;
    padding: 6px 30px;
    transition: all 0.3s;
}
#app .btn:hover{
    background: rgb(44, 142, 120);
}

/*contact*/
#contact {
    background: url("../images/contact-bg.jpg") no-repeat;
    background-size: cover;
}

#contact .lvjing {
    background: rgba(0,0,0,0.7);
    padding: 80px 0;
    color: #fff;
}

#contact h2 {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 30px;
}

#contact p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 30px;
}

#contact address {
    margin-top: 30px;
}

#contact address p {
    font-size: 16px;
    margin-bottom: 15px;
}

#contact address a {
    color: #fff;
    text-decoration: underline;
}

#contact .glyphicon {
    font-size: 18px;
}

.contact-map {
    background: #fff;
    padding: 10px;
    border-radius: 5px;
}

.contact-map img {
    width: 100%;
    border-radius: 3px;
}

/*footer*/
footer {
    background: #333;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

/* ??????? */
.navbar-fixed-top {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1030;
    border-width: 0 0 1px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* ????? */
.side-bar {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 999;
}

.side-item {
    width: 45px;
    height: 45px;
    background: #fff;
    border-radius: 3px;
    margin-bottom: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    cursor: pointer;
    text-align: center;
    position: relative;
}

.side-item i {
    line-height: 45px;
    font-size: 20px;
    color: #666;
}

.side-item:hover i {
    color: #38f;
}

.qrcode-popup, .phone-popup {
    position: absolute;
    right: 55px;
    bottom: 0;
    background: #fff;
    padding: 10px;
    border-radius: 3px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    display: none;
}

.qrcode-popup {
    width: 150px;
}

.qrcode-popup img {
    width: 100%;
    height: auto;
}

.qrcode-popup p, .phone-popup p {
    margin: 5px 0 0;
    font-size: 12px;
    color: #666;
    text-align: center;
}

.phone-popup {
    width: 120px;
    white-space: nowrap;
}

/* ????? */
@media (max-width: 768px) {
    .side-bar {
        right: 10px;
        bottom: 70px;
    }
    
    .side-item {
        width: 40px;
        height: 40px;
    }
    
    .side-item i {
        line-height: 40px;
    }
    body {
        padding-top: 70px;
    }
}

/* ????? */
#carousel-home {
    margin-top: -70px;
}

#carousel-home .carousel-inner .item {
    height: 100vh;
}

#carousel-home .carousel-inner .item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#carousel-home .carousel-caption {
    background: rgba(0,0,0,0.5);
    padding: 20px;
    border-radius: 5px;
    bottom: 30%;
}

#carousel-home .carousel-caption h2 {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 15px;
}

#carousel-home .carousel-caption p {
    font-size: 18px;
    line-height: 1.6;
}

/* ????????? */
.navbar-nav > li > a > i {
    margin-right: 5px;
}

/* ????? */
@media (max-width: 768px) {
    #carousel-home .carousel-caption h2 {
        font-size: 24px;
    }
    
    #carousel-home .carousel-caption p {
        font-size: 14px;
    }
}

/* ???? */
#products {
    padding: 80px 0;
    background: #f8f8f8;
}

.section-title {
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 15px;
}

.section-title p {
    color: #666;
    font-size: 16px;
}

.products-grid {
    margin-top: 30px;
}

.product-card {
    background: #fff;
    border-radius: 5px;
    padding: 30px;
    height: 100%;
    transition: all 0.3s;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.product-large {
    min-height: 280px;
}

.product-small {
    min-height: 200px;
}

.product-icon {
    margin-bottom: 20px;
}

.product-icon i {
    font-size: 48px;
    color: #38f;
}

.product-icon img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.product-card h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
}

.product-card h4 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}

.product-card p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* ????? */
@media (max-width: 768px) {
    .product-card {
        padding: 20px;
    }
    
    .product-large {
        min-height: 220px;
    }
    
    .product-small {
        min-height: 160px;
    }
}

/* ???? */
.cases-grid {
    margin-top: 30px;
    display: flex;
    flex-wrap: wrap;
}

.cases-grid .col-md-4 {
    display: flex;
    margin-bottom: 30px;
}

.case-card {
    width: 100%;
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s;
    overflow: hidden;
}

.case-img {
    width: 100%;
}

.case-img img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.case-info {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.case-info h3 {
    font-size: 20px;
    font-weight: bold;
    margin: 0 0 10px;
    color: #333;
}

.case-category {
    color: #38f;
    font-size: 14px;
    margin-bottom: 10px;
}

.case-desc {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

/* ????? */
@media (max-width: 768px) {
    .cases-grid {
        display: block;
    }
}

/* ???? */
#partners {
    padding: 80px 0;
    background: #fff;
}

#partner-carousel {
    padding: 0 50px;  /* ????????? */
}

.partner-item {
    padding: 20px;
    text-align: center;
    transition: all 0.3s;
}

.partner-item img {
    max-width: 100%;
    height: auto;
    opacity: 0.8;  /* ?????????? */
    transition: all 0.3s;
}

.partner-item:hover img {
    opacity: 1;
}

#partner-carousel .carousel-control {
    background: none;
    width: 40px;
    color: #666;
    opacity: 0.8;
}

#partner-carousel .carousel-control:hover {
    opacity: 1;
}

#partner-carousel .carousel-indicators {
    bottom: -40px;
}

#partner-carousel .carousel-indicators li {
    border-color: #666;
}

#partner-carousel .carousel-indicators .active {
    background-color: #666;
}

/* ????? */
@media (max-width: 768px) {
    #partner-carousel {
        padding: 0 30px;
    }
    
    .partner-item {
        padding: 10px;
    }
    
    #partner-carousel .carousel-control {
        width: 30px;
    }
}

/* ???? */
#about {
    padding: 80px 0;
    background: #f8f8f8;
}

.about-content {
    padding: 20px;
}

.about-content h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
}

.about-content p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 30px;
}

.about-features {
    margin-top: 30px;
}

.feature-item {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.feature-item i {
    color: #38f;
    font-size: 18px;
    margin-right: 10px;
}

.feature-item span {
    font-size: 16px;
    color: #444;
}

.about-img {
    position: relative;
    padding: 20px;
}

.about-img img {
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* ????? */
@media (max-width: 768px) {
    .about-content {
        padding: 0;
        margin-bottom: 30px;
    }
    
    .about-img {
        padding: 0;
    }
}

/* ????? */
@media (max-width: 768px) {
    #contact .lvjing {
        padding: 40px 0;
    }
    
    #contact h2 {
        font-size: 24px;
    }
    
    .contact-map {
        margin-top: 30px;
    }
}

/* ??????? */
@media (max-width: 768px) {
    /* ????? */
    .navbar-default .navbar-brand {
        height: 60px;
        padding: 5px 15px;
    }
    
    .navbar-default .navbar-brand img {
        height: 50px;
        width: auto;
    }
    
    .navbar-default .navbar-nav>li>a {
        height: auto;
        line-height: 1.4;
    }
    
    /* ????? */
    #carousel-home .carousel-inner .item {
        height: 60vh;
    }
    
    #carousel-home .carousel-caption {
        bottom: 20%;
        padding: 15px;
    }
    
    #carousel-home .carousel-caption h2 {
        font-size: 24px;
        margin-bottom: 10px;
    }
    
    #carousel-home .carousel-caption p {
        font-size: 14px;
    }
    
    /* ?????? */
    .section-title {
        margin-bottom: 30px;
    }
    
    .section-title h2 {
        font-size: 24px;
        margin-bottom: 10px;
    }
    
    .section-title p {
        font-size: 14px;
    }
    
    /* ?????? */
    .products-grid {
        margin-top: 20px;
    }
    
    .product-card {
        margin-bottom: 20px;
    }
    
    /* ?????? */
    .case-img img {
        height: 180px;
    }
    
    .case-info h3 {
        font-size: 18px;
    }
    
    /* ?????? */
    .partner-item {
        padding: 10px;
    }
    
    #partner-carousel {
        padding: 0 20px;
    }
    
    /* ?????? */
    .about-content {
        text-align: center;
    }
    
    .about-features {
        display: inline-block;
        text-align: left;
    }
    
    /* ?????? */
    #contact .lvjing {
        padding: 40px 0;
    }
    
    #contact h2 {
        font-size: 24px;
        margin-bottom: 20px;
    }
    
    #contact p {
        font-size: 14px;
        margin-bottom: 20px;
    }
    
    .contact-map {
        margin-top: 30px;
    }
    
    /* ????? */
    .side-bar {
        right: 10px;
        bottom: 60px;
    }
    
    .side-item {
        width: 35px;
        height: 35px;
    }
    
    .side-item i {
        line-height: 35px;
        font-size: 16px;
    }
    
    .qrcode-popup {
        width: 120px;
        right: 45px;
    }
    
    .phone-popup {
        width: 100px;
        right: 45px;
    }
}

/* ?????? */
@media (max-width: 480px) {
    #carousel-home .carousel-inner .item {
        height: 50vh;
    }
    
    .product-large, .product-small {
        min-height: auto;
    }
    
    .case-img img {
        height: 160px;
    }
    
    .about-img {
        margin: 0 -15px;
    }
    
    .about-img img {
        border-radius: 0;
    }
}