/* 设置 Banner 容器和图像样式 */
.banner {
    width: 100%;
    /* height: 300px; */
    position: relative;
    overflow: hidden;
    position: relative;
    width: 100%;
    height: 45vw;
    /* 👉 固定高度，可自定义 */
    overflow: hidden;
}

.banner video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: 100%;
    transform: translate(-50%, -50%);
    object-fit: cover;
    /* 保证填满区域，不变形 */
    object-position: top;
    z-index: -1;
}



.banner-info-box {
    width: 100%;
    height: 100%;
    margin: 0 auto;
    left: 0;
    top: 0;
    position: absolute;
    z-index: 10;
    display: flex;
    /*padding-left: 10%;*/
    /* align-items: center; */
    justify-content: center;
    flex-direction: column;
    color: #fff;

    background: rgba(0, 0, 0, .2);
    /*justify-content: flex-end;*/
    text-align: center;
}

.banner-info-box h1 {
    font-size: 4vw;
      transition: opacity 2s ease;
}

.banner-info-box h1.hide {
      opacity: 0;
    }
.banner-info-box h2 {
    font-size: 2.4vw;
}
.banner-more{transition:all 2s ease}
.banner-more.animate{margin-top:20vw}

.banner-info-box p {
    font-size: 2.4vw;
}

.banner-info-box span {
    /* color: #0062c4; */
}

.swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}



/* 设置左右箭头样式 */
.banner-button-next,
.banner-button-prev {
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    /* border-radius: 50%; */
    padding: 10px;
    position: absolute;
    top: 50%;
    z-index: 10;
    cursor: pointer;
    opacity: .5;

}

.banner-button-next:hover,
.banner-button-prev:hover {
    opacity: 1;
}

.banner-button-next .iconfont,
.banner-button-prev .iconfont {
    font-size: 26px;
    line-height: 1;
}

.banner-button-next {
    right: 10px;
    transform: translateY(-50%);
}

.banner-button-prev {
    left: 10px;
    transform: translateY(-50%);
}

/* 设置圆点导航样式 */
.banner-pagination {
    position: absolute;
    bottom: 10px;
    /* left: 50%; */
    /* transform: translateX(-50%); */
    z-index: 10;
    text-align: center;
}

.swiper-pagination-bullet {
    background-color: rgba(255, 255, 255, 0.9) !important;
    width: 15px !important;
    height: 15px !important;
}

.swiper-pagination-bullet-active {
    background-color: #fff !important;
}

.index-pro-box {
    display: flex;
}

.index-pro-item {
    display: flex;
    justify-content: space-between;
}

.index-pro-item li {
    width: 32%;
}

.index-pro-item li img {
    width: 100%;
}

.index-pro-item li h2 {
    padding: 2% 0;
}

.index-pro-item li .index-chanpin-item span {
    color: #666;
    padding-right: 10px;
    font-size: 16px;
    line-height: 2em;
}

.index-pro-item li .index-more {
    padding: 4% 0;
    display: block;
    font-size: 18px;
}

/* 工作原理与优点部分 */
.working-principle {
    background-color: #f8f8f8;
    /* padding: 60px 0; */
}

.working-principle .container {
    display: flex;
    align-items: center;
    justify-content: center;
    /* max-width: 1366px; */
    margin: 0 auto;
}

.working-principle .image {
    flex: 1;
    padding-right: 40px;
}

.working-principle .image img {
    width: 100%;
    max-width: 500px;
    height: auto;
}

.working-principle .text {
    flex: 2;
    padding-left: 40px;
    color: #333;
}

.working-principle .text h2 {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 20px;
}

.working-principle .text p {
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: 30px;
}

.working-principle .text h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
}

.working-principle .text ul {
    list-style-type: none;
    padding-left: 0;
}

.working-principle .text ul li {
    font-size: 20px;
    margin-bottom: 15px;
    margin-left: 20px;
    list-style: disc;
    position: relative;
}

/* .working-principle .text ul li::before {
    content: '✔';
    position: absolute;
    left: 0;
    color: #28a745;
    font-size: 22px;
    top: 50%;
    transform: translateY(-50%);
} */

/* 查看详情按钮 */
.btn-detail {
    display: inline-block;
    padding: 12px 24px;
    background-color: #007bff;
    color: white;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 30px;
    transition: background-color 0.3s ease;
}

.btn-detail:hover {
    background-color: #0056b3;
}




/* 解决方案部分 */
.energy-solutions {

    /* padding: 60px 0; */
}

.energy-solutions .container {
    /* max-width: 1200px; */
    /* margin: 0 auto; */
    /* padding: 0 20px; */
}

/* .energy-solutions h2 {
    font-size: 32px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 40px;
} */

/* 横向排列的卡片 */
.solutions-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    /* gap: 30px; */
}

.solution-card {
    width: 32%;

    /* border-radius: 10px; */
    /* box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); */
    /* padding: 20px; */
    text-align: left;
    transition: transform 0.3s ease;
    box-sizing: border-box;
}

.solution-card:hover {
    transform: translateY(-5px);
}

.solution-card .card-icon {
    /* margin-bottom: 20px; */
}

.solution-card .card-icon img {
    width: 100%;
    /* height: 80px; */
    object-fit: cover;
}

.solution-card .card-info {
    padding: 20px;
    background: #f8f8f8;
}

.solution-card h3 {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* .solution-card h3 .iconfont{float: right;} */
.solution-card h4 {
    font-size: 20px;
    font-weight: normal;
    margin-bottom: 10px;
}

.solution-card p {
    font-size: 18px;
    height: calc(1.6em * 5);
    /* 5行文字的高度 */
    line-height: 1.6;
    color: #555;
}

/* 解决方案列表页 */
.solutions-wrapper-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    /* gap: 30px; */
}

.solutions-wrapper-list .solution-card {
    width: 49%;
    margin-bottom: 1%;
    /* border-radius: 10px; */
    /* box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); */
    /* padding: 20px; */
    text-align: left;
    transition: transform 0.3s ease;
    box-sizing: border-box;
}

.solutions-wrapper-list .solution-card p {
    font-size: 14px;
    height: calc(1.6em * 3);
    /* 5行文字的高度 */
    line-height: 1.6;
    color: #555;
}

/* 查看更多按钮 */
.index-btn-more {
    display: inline-block;
    padding: 12px 24px;
    /* background-color: #007bff; */
    color: #333;
    font-size: 16px;
    /* font-weight: bold; */
    text-align: center;
    text-decoration: none;
    border-radius: 5px;
    border: 1px solid #333;
    margin-top: 30px;
    transition: background-color 0.3s ease;
}

.index-btn-more:hover {
    background-color: #efefef;
}

.index-btn-more.center {
    display: block;
    margin: 30px auto;
}


.banner-btn-more {
    display: inline-block;
    padding: 12px 24px;
    background-color: #fff;
    color: #333;
    font-size: 20px;
    /* font-weight: bold; */
    text-align: center;
    text-decoration: none;
    border-radius: 5px;
    border: 1px solid #fff;
    margin-top: 30px;
    transition: background-color 0.3s ease;
    margin-right: 10px;
}

.banner-btn-more2 {
    display: inline-block;
    padding: 12px 24px;
    /* background-color: #fff; */
    color: #fff;
    font-size: 20px;
    /* font-weight: bold; */
    text-align: center;
    text-decoration: none;
    border-radius: 5px;
    border: 1px solid #fff;
    margin-top: 30px;
    transition: background-color 0.3s ease;
    margin-right: 10px;
}

/* 公司简介部分 */
.company-intro {
    /* background-color: #f9f9f9; */
    /* padding: 60px 0; */
}

.company-intro .container {
    /* max-width: 1200px; */
    /* margin: 0 auto; */
    /* padding: 0 20px; */
}

/* .company-intro h2 {
    font-size: 32px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 40px;
} */

/* 图片和文字左右布局 */
.intro-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 30px;
}

.intro-text {
    width: 48%;
    font-size: 20px;
    line-height: 1.8;
    color: #555;
}

.intro-image {
    width: 48%;
    text-align: center;
}

.intro-image img {
    width: 100%;
    height: auto;
    /* border-radius: 8px; */
}


/* 新闻模块 */
.news-section {
    /* background-color: #fff; */
    /* padding: 80px 0; */
}

.news-section .container {
    /* max-width: 1200px; */
    /* margin: 0 auto; */
    /* padding: 0 20px; */
}

/* .news-section h2 {
    font-size: 36px;
    font-weight: bold;
    text-align: center;
    color: #333;
    margin-bottom: 50px;
} */

/* 新闻列表 */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-item {
    display: flex;
    /* padding: 20px; */
    background-color: #f9f9f9;
    /* border-radius: 10px; */
    /* box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1); */
    transition: transform 0.3s ease;
}

.news-item:hover {
    transform: translateY(-10px);
}

/* 日期部分 */
.news-date {
    flex: 0 0 150px;
    text-align: center;
    padding: 20px;
    background-color: #e3e3e3;
    color: #666;
    /* border-radius: 10px; */
    margin-right: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-date .day {
    font-size: 36px;
    font-weight: bold;
}

.news-date .month-year {
    font-size: 18px;
    margin-top: 10px;
}

/* 新闻内容部分 */
.news-content {
    flex-grow: 1;
    padding: 20px 0;
}

.news-content h3 {
    font-size: 22px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.news-content p {
    font-size: 20px;
    color: #666;
    line-height: 1.5;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    /* 显示的行数 */
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.btn-read-more {
    font-size: 14px;
    color: #333;
    text-decoration: none;
    font-weight: bold;
}

.btn-read-more:hover {
    text-decoration: underline;
}




/* About Us 样式 */
.about-us {
    /* background-color: #f7f7f7; */
    padding: 80px 0;
    font-size: 16px;
    color: #333;
    line-height: 1.8;
}

.about-header {
    text-align: center;
    margin-bottom: 60px;
}

.about-header h1 {
    font-size: 40px;
    font-weight: 600;
    color: #222;
}

.about-header p {
    font-size: 18px;
    color: #555;
    margin-top: 10px;
}

.about-intro,
.about-vision,
.about-tech {
    display: flex;
    justify-content: space-between;
    margin-bottom: 80px;
}

.about-intro .about-intro-text,
.about-vision .about-vision-text,
.about-tech .about-tech-text {
    width: 48%;
}

.about-intro .about-intro-image,
.about-vision .about-vision-image,
.about-tech .about-tech-image {
    width: 48%;
}

.about-intro img,
.about-vision img,
.about-tech img {
    width: 100%;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.about-intro-text h2,
.about-vision-text h2,
.about-tech-text h2 {
    font-size: 28px;
    font-weight: 600;
    color: #222;
    margin-bottom: 20px;
}

.about-intro-text p,
.about-vision-text p,
.about-tech-text p {
    font-size: 16px;
    color: #666;
}

.about-team {
    text-align: center;
    margin-bottom: 80px;
}

.about-team h2 {
    font-size: 28px;
    font-weight: 600;
    color: #222;
    margin-bottom: 40px;
}

.team-members {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}

.team-member {
    width: 30%;
    text-align: center;
}

.team-member img {
    width: 100%;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.team-member h3 {
    font-size: 20px;
    font-weight: 500;
    color: #333;
}

.team-member p {
    font-size: 14px;
    color: #666;
}

.about-culture {
    text-align: center;
    margin-bottom: 80px;
}

.about-culture h2 {
    font-size: 28px;
    font-weight: 600;
    color: #222;
    margin-bottom: 20px;
}

.about-culture-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 10px;
}

.about-tech {
    display: flex;
    justify-content: space-between;
}

.about-tech .about-tech-text {
    width: 48%;
}

.about-tech .about-tech-image {
    width: 48%;
}

.about-tech-text h2 {
    font-size: 28px;
    font-weight: 600;
    color: #222;
    margin-bottom: 20px;
}

.about-tech-text p {
    font-size: 16px;
    color: #666;
}

.about-tech img {
    width: 100%;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {

    .about-intro,
    .about-vision,
    .about-tech {
        flex-direction: column;
    }

    .about-intro .about-intro-text,
    .about-vision .about-vision-text,
    .about-tech .about-tech-text,
    .about-intro .about-intro-image,
    .about-vision .about-vision-image,
    .about-tech .about-tech-image {
        width: 100%;
    }

    .team-members {
        flex-direction: column;
        align-items: center;
    }

    .team-member {
        width: 80%;
        margin-bottom: 40px;
    }
}




/* caselist 案例列表 */
.case-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    display: flex;
    flex-direction: column;
    background-color: #fff;
    /* border-radius:   12px; */
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.case-image img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
}

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

.case-title {
    font-size: 18px;
    color: #222;
    margin-bottom: 10px;
    font-weight: 600;
}

.case-description {
    font-size: 14px;
    color: #555;
    line-height: 1.6;
}

/* 响应式支持 */
@media (max-width: 992px) {
    .case-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .case-list {
        grid-template-columns: 1fr;
    }
}



/* 新闻列表 */


.news-page {
    display: flex;
    gap: 40px;
}

.news-sidebar {
    width: 200px;
    flex-shrink: 0;
}

.news-sidebar-title {
    font-size: 24px;
    margin-bottom: 20px;
    color: #222;
    font-weight: 600;
    /* border-bottom: 2px solid #eee; */
    padding-bottom: 10px;
}

.news-sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.news-sidebar-nav li {
    margin-bottom: 12px;
}

.news-sidebar-nav a {
    text-decoration: none;
    color: #444;
    font-size: 20px;
    transition: color 0.3s;
}

.news-sidebar-nav a:hover,
.news-sidebar-nav li.cur a {
    color: #007acc;
}

.news-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.news-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.news-thumb img {
    width: 150px;
    height: 100px;
    object-fit: cover;
    border-radius: 6px;
}

.news-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-title {
    font-size: 22px;
    font-weight: bold;
    color: #222;
    margin-bottom: 8px;
}

.news-summary {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
    flex: 1;
}

.news-meta {
    font-size: 12px;
    color: #999;
    margin-top: 10px;
}

/* 响应式 */
@media (max-width: 992px) {
    .news-page {
        flex-direction: column;
    }

    .news-sidebar {
        width: 100%;
    }

    .news-list {
        padding-top: 20px;
    }

    .news-item {
        flex-direction: column;
    }

    .news-thumb img {
        width: 100%;
        height: auto;
    }
}



/* 右侧新闻详情 */
.news-detail {
    flex: 1;
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
}

.news-detail-title {
    font-size: 28px;
    font-weight: bold;
    color: #222;
    margin-bottom: 15px;
    line-height: 1.4;
}

.news-detail-desc {
    color: #666;
    font-size: 16px;
    margin: 10px 0 20px 0;
    line-height: 1.6;
}

.news-detail-thumb {
    margin-bottom: 30px;
    overflow: hidden;
    /* border-radius: 10px; */
    /* max-height: 360px; */
}

.news-detail-thumb img {
    width: 100%;
    height: auto;
    /* object-fit: cover; */
    display: block;
}

.news-detail-meta {
    font-size: 14px;
    color: #999;
    margin-bottom: 30px;
}

.news-detail-content {
    font-size: 16px;
    color: #444;
    line-height: 1.8;
}

.news-detail-content h2 {
    font-size: 22px;
    color: #333;
    border-left: 4px solid #333;
    padding-left: 10px;
    margin: 30px 0 15px;
    font-weight: 600;
}

.news-detail-content img {
    max-width: 100%;
    height: auto;
    /* margin: 20px auto; */
    /* border-radius: 6px; */
}

.news-detail-content a {
    color: #007acc;
    text-decoration: underline;
}

/* 响应式布局 */
@media (max-width: 992px) {
    .news-detail-page {
        flex-direction: column;
    }

    .news-sidebar {
        width: 100%;
    }

    .news-detail {
        padding: 20px;
    }
}

.news-detail-page {
    display: flex;
    gap: 40px;
}

.news-detail-nav {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid #eee;
    font-size: 15px;
    color: #666;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.news-detail-nav a {
    color: #007acc;
    text-decoration: none;
    transition: color 0.3s;
}

.news-detail-nav a:hover {
    color: #005a99;
}

.news-prev,
.news-next {
    line-height: 1.6;
}

/* 产品列表 */
.lists-pro-bg {
    background: rgb(243, 243, 243);
    padding: 4% 0;
}

.lists-pro {}

.lists-pro li {
    padding-bottom: 4%;
}

.lists-pro li dl {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.lists-pro li dl dt {
    width: 48%;
}

.lists-pro li dl dt video {
    width: 100%;
    height: auto;
}

.lists-pro li dl dd {
    width: 48%;
}

.lists-pro li dl dd .lists-pro-tit {
    font-size: 24px;
    padding-bottom: 4%;
}

.lists-pro li dl dd .lists-pro-desc {
    font-size: 16px;
    padding-bottom: 4%;
    color: #666;
}

/* 产品详情 */
.pro-layout {
    display: flex;
    gap: 40px;
}

/* 左侧导航栏 */
.pro-sidebar {
    width: 240px;
    flex-shrink: 0;
}

.pro-nav {
    list-style: none;
    padding: 0;
    margin: 0;
    border-left: 4px solid #007acc;
}

.pro-nav li {
    margin: 0;
}

.pro-nav a {
    display: block;
    padding: 14px 20px;
    border-bottom: 1px solid #eee;
    background: #f9f9f9;
    color: #333;
    text-decoration: none;
    transition: all 0.3s;
}

.pro-nav a:hover {
    background: #007acc;
    color: #fff;
}

/* 右侧内容区 */
.pro-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

/* 产品信息 */
.pro-detail-header {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.pro-detail-image {
    flex: 0 0 50%;
}

.pro-detail-image img {
    max-width: 100%;
    /* border-radius: 10px; */
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.pro-detail-info {
    flex: 1;
}

.pro-detail-title {
    font-size: 28px;
    font-weight: bold;
    color: #222;
    margin-bottom: 20px;
}

.pro-detail-meta {
    font-size: 16px;
    color: #555;
    margin-bottom: 10px;
}

.pro-detail-btn {
    display: inline-block;
    margin-top: 20px;
    background-color: #333;
    color: #fff;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    transition: background-color 0.3s;
}

.pro-detail-btn:hover {
    background-color: #005fa3;
}

/* 内容区块 */
.pro-detail-content {
    font-size: 16px;
    color: #444;
    line-height: 1.8;
}

.pro-detail-content ul {
    padding-left: 20px;
    list-style: disc;
    margin: 10px 0 20px;
}

.pro-detail-content h2 {
    font-size: 22px;
    color: #333;
    border-left: 4px solid #333;
    padding-left: 10px;
    margin: 30px 0 15px;
    font-weight: 600;
}

.pro-detail-content video {
    width: 100%;
    height: auto;
}

/* 相关推荐 */
.pro-related-title {
    font-size: 22px;
    color: #333;
    border-left: 4px solid #333;
    padding-left: 10px;
    margin-bottom: 30px;
    font-weight: 600;
}

.pro-related-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.pro-related-item {
    border: 1px solid #eee;
    /* border-radius: 10px; */
    overflow: hidden;
    background: #fff;
    transition: all 0.3s;
}

.pro-related-item:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.pro-related-item img {
    width: 100%;
    height: auto;
    display: block;
}

.pro-related-item h3 {
    font-size: 16px;
    color: #333;
    padding: 12px 16px;
    margin: 0;
    text-align: center;
}

/* 响应式处理 */
@media (max-width: 992px) {
    .pro-layout {
        flex-direction: column;
    }

    .pro-sidebar {
        width: 100%;
    }

    .pro-related-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .pro-related-list {
        grid-template-columns: 1fr;
    }
}


/* 资质证书 */
.cert-layout {
    display: flex;
    gap: 40px;
}

/* 左侧导航栏 */
.cert-sidebar {
    width: 240px;
    flex-shrink: 0;
}

.cert-nav {
    list-style: none;
    padding: 0;
    margin: 0;
    border-left: 4px solid #007acc;
}

.cert-nav li {
    margin: 0;
}

.cert-nav a {
    display: block;
    padding: 14px 20px;
    border-bottom: 1px solid #eee;
    background: #f9f9f9;
    color: #333;
    text-decoration: none;
    transition: all 0.3s;
}

.cert-nav a:hover {
    background: #007acc;
    color: #fff;
}

/* 右侧内容区 */
.cert-main {
    flex: 1;
}

/* 证书列表 */
.cert-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.cert-item {
    text-align: center;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
}

.cert-item:hover {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.cert-item img {
    width: 100%;
    height: auto;
    display: block;
}

.cert-item p {
    font-size: 16px;
    color: #333;
    padding: 12px;
    margin: 0;
}

/* 响应式处理 */
@media (max-width: 992px) {
    .cert-layout {
        flex-direction: column;
    }

    .cert-sidebar {
        width: 100%;
    }

    .cert-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .cert-list {
        grid-template-columns: 1fr;
    }
}



.contact-wrap {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 60px 20px;
}

.contact-title {
    font-size: 36px;
    color: #222;
    margin-bottom: 10px;
}

.contact-subtitle {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
}

.contact-info {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 50px;
    gap: 20px;
}

.contact-item {
    flex: 1 1 49%;
    background: #f9f9f9;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.contact-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #007acc;
}

.contact-item p {
    font-size: 15px;
    color: #333;
}

.contact-form {
    background: #fefefe;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
    text-align: left;
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-form input,
.contact-form textarea {
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 18px;
    width: 100%;
    box-sizing: border-box;
}

.contact-form button {
    cursor: pointer;
    display: block;
    padding: 12px 24px;
    /* background-color: #007bff; */
    color: #333;
    font-size: 20px;
    text-align: center;
    text-decoration: none;
    border-radius: 5px;
    border: 1px solid #333;
    margin-top: 30px;
    transition: background-color 0.3s ease;
}

.contact-form button:hover {
    background-color: #efefef;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .contact-info {
        flex-direction: column;
        gap: 20px;
    }

    .contact-item {
        flex: 1 1 100%;
    }

    /* 手机样式 */
    .banner-info-box h1 {
        font-size: 7vw;
    }

    .banner-info-box h2 {
        font-size: 5.4vw;
    }

    .banner-info-box p {
        font-size: 5.4vw;
    }

    .banner-btn-more,
    .banner-btn-more2 {
        padding:1% 2%;
        margin: 0 1%;
        margin-top: 0;
        font-size: 16px;
    }

    .index-pro-item {
        display: block;
    }

    .index-pro-item li {
        width: 100%;
    }

    .working-principle .container {
        display: block;
    }

    .working-principle .image {
        padding-right: 0;
    }

    .working-principle .image img {
        max-width: 100%;
    }

    .working-principle .text {
        padding-left: 0;
    }

    .solutions-wrapper {
        display: block;
    }

    .solution-card {
        width: 100%;
    }

    .intro-wrapper {
        display: block;
    }

    .intro-text {
        width: 100%;
    }

    .intro-image {
        width: 100%;
    }

    .nav {
        display: none;
        width: 80%;
        position: fixed;
        right: 0;
        top: 0;
        overflow: auto;
        height: 100%;
        background: #fff;
        z-index: 999;
    }

    .nav.show {
        display: block !important;
    }

    .head-bg {
        padding: 2%;
    }

    .solutions-wrapper-list .solution-card {
        width: 100%;
    }

    .lists-pro li dl {
        display: block;
    }

    .lists-pro li dl dt {
        width: 100%;
    }

    .lists-pro li dl dd {
        width: 100%;
    }
    .pro-detail-image{flex: 0 0 100%;}
    /* .nav-item{border-bottom: 1px solid #ddd;} */
    .nav-item > a{display: block;}
    .nav li>a{font-size: 18px;}
    .sub-menu{display: block;position: relative;flex-wrap: wrap;justify-content: center;}
    .nav-item:hover .sub-menu{display: block;}
    .nav .sub-menu li>a{padding: 2%;min-width: 100px;font-size: 14px;}
    .news-sidebar{display: none;}
}