/* 头部样式 */
.header {
    width: 100%;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    height: 80px;
    line-height: 80px;
}

.header.scrolled {
    height: 60px;
    line-height: 60px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.header-info {
    display: flex;
    flex-direction: column;
    margin-left: 30px;
    margin-right: auto;
    line-height: normal;
}

.header-tel {
    font-size: 14px;
    font-weight: normal;
    color: #0066cc;
    margin-bottom: 5px;
    display: flex;
    align-items: center;
    /* 确保图标与文本垂直居中对齐 */
}

.tel-icon {
    margin-right: 4px;
    /* 图标与文本之间的间距 */
    color: #0066cc;
    /* 确保图标颜色与文本一致 */
    display: inline-block;
    /* 确保图标正确显示 */
    vertical-align: middle;
    /* 垂直居中对齐 */
}

.header-service {
    font-size: 14px;
    color: #666;
    margin: 0;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.logo-link {
    display: block;
    width: 100%;
    max-width: 180px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-img {
    width: 100%;
    height: auto;
    max-height: 50px;
    object-fit: contain;
    transition: all 0.3s ease;
}

.header.scrolled .logo-img {
    max-height: 40px;
}

.logo-img:hover {
    opacity: 0.9;
    transform: scale(1.05);
}

.nav {
    display: flex;
    align-items: center;
    height: 100%;
}

.nav-list {
    display: flex;
    gap: 20px;
    height: 100%;
    align-items: center;
}

.nav-item {
    height: 100%;
    display: flex;
    align-items: center;
    opacity: 0;
    transform: translateY(20px);
    animation: navItemSlideIn 0.5s ease-out forwards;
}

/* 导航项滑入动画 */
@keyframes navItemSlideIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 为每个导航项添加延迟，创建依次出现的效果 */
.nav-item:nth-child(1) {
    animation-delay: 0.1s;
}

.nav-item:nth-child(2) {
    animation-delay: 0.2s;
}

.nav-item:nth-child(3) {
    animation-delay: 0.3s;
}

.nav-item:nth-child(4) {
    animation-delay: 0.4s;
}

.nav-item:nth-child(5) {
    animation-delay: 0.5s;
}

.nav-item:nth-child(6) {
    animation-delay: 0.6s;
}

.nav-item:nth-child(7) {
    animation-delay: 0.7s;
}

.nav-item a {
    font-size: 14px;
    color: #333;
    font-weight: normal;
    padding: 0 15px;
    position: relative;
    display: inline-block;
    text-align: center;
    line-height: inherit;
}

.nav-item a span {
    display: block;
    font-size: 14px;
    color: #333;
    margin-bottom: 2px;
    transition: color 0.3s ease;
    line-height: 1.2;
}

.nav-item a label {
    display: block;
    font-size: 11px;
    color: #999;
    transition: color 0.3s ease;
    line-height: 1;
    margin: 0;
}

.nav-item a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #0066cc;
    transform: scaleX(0);
    transform-origin: center center;
    transition: bottom 0.3s ease, transform 0.3s ease-in-out;
}

.nav-item a:hover::after {
    bottom: -5px;
    transform: scaleX(1);
}

.nav-item a:hover span {
    color: #0066cc;
}

.nav-item a:hover label {
    color: #0066cc;
}

/* 导航链接选中状态 */
.nav-item a.active {
    color: #0066cc;
}

.nav-item a.active span {
    color: #0066cc;
    font-weight: normal;
}

.nav-item a.active label {
    color: #0066cc;
}

.nav-item a.active::after {
    bottom: -5px;
    transform: scaleX(1);
    background-color: #0066cc;
}

.menu-btn {
    display: none;
    padding: 10px;
    cursor: pointer;
    z-index: 1001;
}

.menu-icon {
    display: block;
    width: 24px;
    height: 2px;
    background-color: #333;
    position: relative;
    transition: all 0.3s ease;
}

.menu-icon::before,
.menu-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: #333;
    transition: all 0.3s ease;
}

.menu-icon::before {
    top: -8px;
}

.menu-icon::after {
    bottom: -8px;
}

/* 移动端菜单样式 */
@media (max-width: 767px) {

    /* 显示菜单按钮 */
    .menu-btn {
        display: block;
    }

    /* 初始隐藏导航菜单 */
    .nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: rgba(255, 255, 255, 0.95);
        z-index: 1000;
        padding: 100px 20px;
        box-sizing: border-box;
    }

    /* 激活状态下显示导航菜单 */
    .nav.active {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* 移动端导航列表样式 */
    .nav-list {
        flex-direction: column;
        gap: 30px;
        text-align: center;
        width: 100%;
    }

    /* 移动端导航项样式 */
    .nav-item {
        height: auto;
        opacity: 1;
        transform: translateY(0);
        animation: none;
    }

    /* 移动端导航链接样式 */
    .nav-item a {
        font-size: 20px;
        padding: 15px 20px;
        display: block;
    }

    /* 移动端导航链接文字样式 */
    .nav-item a span {
        font-size: 20px;
    }

    /* 移动端导航链接标签样式 */
    .nav-item a label {
        font-size: 12px;
    }

    /* 移动端导航链接激活状态样式 */
    .nav-item a.active {
        color: #0066cc;
    }

    .nav-item a.active span {
        color: #0066cc;
        font-weight: bold;
    }

    .nav-item a.active label {
        color: #0066cc;
    }

    /* 激活状态下的菜单按钮样式 */
    .menu-btn.active .menu-icon {
        background-color: transparent;
    }

    .menu-btn.active .menu-icon::before {
        transform: rotate(45deg);
        top: 0;
    }

    .menu-btn.active .menu-icon::after {
        transform: rotate(-45deg);
        bottom: 0;
    }
}

/* 主内容区域 */
.main {
    margin-top: 80px;
}

/* 轮播图样式 */
.banner {
    width: 100%;
    height: 500px;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* banner切换按钮样式 */
.banner-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.5);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
    opacity: 0.7;
}

/* 向前切换按钮 */
.banner-nav-btn.prev-btn {
    left: 20px;
}

/* 向后切换按钮 */
.banner-nav-btn.next-btn {
    right: 20px;
}

/* 按钮悬停效果 */
.banner-nav-btn:hover {
    background-color: rgba(0, 0, 0, 0.7);
    opacity: 1;
    transform: translateY(-50%) scale(1.1);
}

/* 按钮焦点效果 */
.banner-nav-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.5);
}

/* 箭头图标样式 */
.nav-arrow {
    display: block;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

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

    /* 调整按钮大小 */
    .banner-nav-btn {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }

    /* 调整按钮位置 */
    .banner-nav-btn.prev-btn {
        left: 15px;
    }

    .banner-nav-btn.next-btn {
        right: 15px;
    }
}

@media (max-width: 480px) {

    /* 进一步调整按钮大小 */
    .banner-nav-btn {
        width: 35px;
        height: 35px;
        font-size: 18px;
    }

    /* 进一步调整按钮位置 */
    .banner-nav-btn.prev-btn {
        left: 10px;
    }

    .banner-nav-btn.next-btn {
        right: 10px;
    }
}

/* aboutus页面的banner样式 */
.aboutus-page .banner {
    height: 400px;
}

.banner-item {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    background-size: cover !important;
    background-position: center center !important;
    transition: opacity 0.5s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 活动幻灯片样式 */
.banner-item.active {
    opacity: 1;
    animation: bannerFadeIn 1s ease-in-out;
}

@keyframes bannerFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.banner .container {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.banner h1 {
    font-size: 48px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    animation: bannerSlideIn 1.2s ease-out;
}

.banner .banner-subtitle {
    font-size: 24px;
    color: #fff;
    margin: 0;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    animation: bannerSlideIn 1.4s ease-out;
}

@keyframes bannerSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 1200px) {

    /* 桌面端首页banner保持500px高度 */
    .banner {
        height: 500px;
    }

    /* aboutus页面的banner在所有屏幕尺寸下保持400px高度 */
    .aboutus-page .banner {
        height: 400px;
    }
}

@media (max-width: 768px) {

    /* 平板端首页banner调整为450px高度 */
    .banner {
        height: 450px;
    }

    .banner h1 {
        font-size: 32px;
    }

    .banner .banner-subtitle {
        font-size: 18px;
    }

    /* aboutus页面的banner在平板端保持400px高度 */
    .aboutus-page .banner {
        height: 400px;
    }
}

@media (max-width: 480px) {

    /* 移动端首页banner调整为400px高度 */
    .banner {
        height: 400px;
    }

    .banner h1 {
        font-size: 24px;
    }

    .banner .banner-subtitle {
        font-size: 16px;
    }

    /* aboutus页面的banner在移动端保持400px高度 */
    .aboutus-page .banner {
        height: 400px;
    }
}

/* 服务模块样式 */
.service {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.service-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    /* PC端每行显示4个服务 */
    gap: 30px;
    max-width: 1200px;
    /* 设置最大宽度 */
    margin: 0 auto;
    /* 居中对齐 */
    padding: 0 20px;
    /* 添加内边距 */
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .service-content {
        grid-template-columns: repeat(2, 1fr);
        /* 中等屏幕每行2个服务 */
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .service-content {
        grid-template-columns: 1fr;
        /* 移动屏幕每行1个服务 */
        gap: 20px;
    }
}

.service-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
}

.service-item .icon {
    font-size: 48px;
    color: #0066cc;
    margin-bottom: 20px;
}

.service-item h3 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
}

.service-item p {
    color: #666;
    line-height: 1.8;
}

/* 案例模块样式 */
.case {
    padding: 80px 0;
    background-color: #fff;
}

.case-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.case-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
}

.case-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-item:hover img {
    transform: scale(1.05);
}

.case-item .case-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: #fff;
    padding: 30px 20px 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.case-item:hover .case-info {
    transform: translateY(0);
}

.case-item h3 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #fff;
}

.case-item p {
    font-size: 14px;
    opacity: 0.9;
    line-height: 1.6;
}

/* 方案模块样式 */
.solution {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.solution-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.solution-item {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.solution-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
}

.solution-item h3 {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
}

.solution-item h3::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 24px;
    background-color: #0066cc;
    border-radius: 4px;
}

.solution-item p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.solution-item .solution-features {
    list-style: disc;
    margin-left: 20px;
    color: #666;
}

.solution-item .solution-features li {
    margin-bottom: 10px;
}

/* 优势模块样式 */
.advantage {
    padding: 80px 0;
    background-color: #fff;
}

.advantage-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    /* PC端每行3个元素 */
    gap: 30px;
    max-width: 1200px;
    /* 设置最大宽度 */
    margin: 0 auto;
    /* 居中对齐 */
    padding: 0 20px;
    /* 添加内边距 */
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .advantage-content {
        grid-template-columns: repeat(2, 1fr);
        /* 中等屏幕每行2个元素 */
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .advantage-content {
        grid-template-columns: 1fr;
        /* 移动屏幕每行1个元素 */
        gap: 20px;
    }
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    background-color: #0066cc;
    color: #fff;
}

.advantage-item:hover * {
    color: #fff;
}

.advantage-item .icon {
    font-size: 48px;
    color: #0066cc;
    margin-bottom: 20px;
    transition: color 0.3s ease;
}

.advantage-item:hover .icon {
    color: #fff;
}

.advantage-item h3 {
    font-size: 16px;
    font-weight: normal;
    margin-bottom: 15px;
    color: #333;
    transition: color 0.3s ease;
}

.advantage-item p {
    color: #666;
    line-height: 1.8;
    transition: color 0.3s ease;
}

/* 客户模块样式 */
.client {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.client-content {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    /* PC端每行显示5个客户 */
    gap: 30px;
    align-items: center;
    justify-items: center;
    max-width: 1200px;
    /* 设置最大宽度 */
    margin: 0 auto;
    /* 居中对齐 */
    padding: 0 20px;
    /* 添加内边距 */
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .client-content {
        grid-template-columns: repeat(4, 1fr);
        /* 中等屏幕每行4个客户 */
        gap: 25px;
    }
}

@media (max-width: 992px) {
    .client-content {
        grid-template-columns: repeat(3, 1fr);
        /* 平板屏幕每行3个客户 */
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .client-content {
        grid-template-columns: repeat(2, 1fr);
        /* 小屏幕每行2个客户 */
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .client-content {
        grid-template-columns: 1fr;
        /* 手机屏幕每行1个客户 */
        gap: 15px;
    }
}

.client-item {
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
}

.client-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
}

.client-item img {
    max-height: 80px;
    object-fit: contain;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.client-item:hover img {
    filter: grayscale(0%);
}

/* 知识模块样式 */
.knowledge {
    padding: 80px 0;
    background-color: #fff;
}

.knowledge-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.knowledge-category {
    background-color: #f9f9f9;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
}

.knowledge-category .category-title {
    background-color: #0066cc;
    color: #fff;
    padding: 20px;
    font-size: 18px;
    font-weight: bold;
}

.knowledge-list {
    padding: 20px;
}

.knowledge-item {
    padding: 15px 0;
    border-bottom: 1px solid #eee;
    transition: all 0.3s ease;
}

.knowledge-item:last-child {
    border-bottom: none;
}

.knowledge-item:hover {
    padding-left: 10px;
}

.knowledge-item a {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    color: #333;
    transition: color 0.3s ease;
}

.knowledge-item:hover a {
    color: #0066cc;
}

.knowledge-item .knowledge-info {
    flex: 1;
    margin-right: 20px;
}

.knowledge-item h3 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 8px;
    line-height: 1.4;
}

.knowledge-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.knowledge-item .knowledge-date {
    font-size: 12px;
    color: #999;
    white-space: nowrap;
}

/* 联系我们模块样式 */
.contact {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    align-items: start;
}

.contact-info {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
}

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

.contact-info p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.contact-details {
    list-style: none;
}

.contact-details li {
    margin-bottom: 15px;
    color: #666;
    line-height: 1.6;
}

.contact-details strong {
    color: #333;
    margin-right: 10px;
}

.contact-map {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
}

.contact-map h3 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
}

/* 服务页面特有样式 */

/* 服务优势 */
.service-advantages {
    margin: 60px 0;
}

.service-advantages-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.service-advantage-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.service-advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
}

.service-advantage-item h3 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-advantage-item h3::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 20px;
    background-color: #0066cc;
    border-radius: 4px;
}

.service-advantage-item p {
    color: #666;
    line-height: 1.8;
    margin: 0;
}

/* 核心服务 */
.core-services {
    margin: 60px 0;
}

.section-subtitle {
    text-align: center;
    margin-bottom: 40px;
}

.section-subtitle h3 {
    font-size: 20px;
    font-weight: normal;
    color: #333;
    position: relative;
    display: inline-block;
    padding-bottom: 10px;
}

.section-subtitle h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background-color: #0066cc;
}

.core-services-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.core-service-item {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.core-service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
}

.core-service-item h4 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
}

.core-service-item h4::before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    background-color: #0066cc;
    border-radius: 50%;
}

.core-service-item p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.core-service-item p:last-child {
    margin-bottom: 0;
}

/* 关于我们页面样式 */

/* 关于我们模块 */
.about {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

/* 公司简介 */
.about-intro {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    line-height: 1.8;
    color: #666;
}

.about-intro p {
    margin-bottom: 15px;
}

.about-intro p:last-child {
    margin-bottom: 0;
}

/* 我们的服务 */
.about-services {
    margin-top: 40px;
}

.about-services h3 {
    font-size: 20px;
    font-weight: normal;
    color: #333;
    margin-bottom: 30px;
    text-align: center;
    position: relative;
    display: inline-block;
    align-self: center;
    padding-bottom: 10px;
}

.about-services h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background-color: #0066cc;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        /* 中等屏幕每行2个服务 */
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
        /* 移动屏幕每行1个服务 */
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .services-grid {
        grid-template-columns: 1fr;
        /* 小屏手机每行1个服务 */
        gap: 15px;
    }
}

.service-card {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
}

.service-card h4 {
    font-size: 16px;
    font-weight: normal;
    color: #333;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-card h4::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 20px;
    background-color: #0066cc;
    border-radius: 4px;
}

.service-card p {
    color: #666;
    line-height: 1.8;
    margin: 0;
}

/* 我们的使命 */
.about-mission {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.about-mission h3 {
    font-size: 20px;
    font-weight: normal;
    color: #333;
    margin-bottom: 20px;
}

.about-mission p {
    color: #666;
    line-height: 1.8;
    margin: 0;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 核心理念 */
.about-values {
    margin-top: 40px;
}

.about-values h3 {
    font-size: 20px;
    font-weight: normal;
    color: #333;
    margin-bottom: 30px;
    text-align: center;
    position: relative;
    display: inline-block;
    align-self: center;
    padding-bottom: 10px;
}

.about-values h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background-color: #0066cc;
}

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

/* 响应式设计 */
@media (max-width: 1200px) {
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
        /* 中等屏幕每行2个价值 */
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .values-grid {
        grid-template-columns: 1fr;
        /* 移动屏幕每行1个价值 */
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .values-grid {
        grid-template-columns: 1fr;
        /* 小屏手机每行1个价值 */
        gap: 15px;
    }
}

.value-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
}

.value-icon {
    width: 60px;
    height: 60px;
    background-color: #0066cc;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: normal;
    margin: 0 auto 20px;
}

.value-item h4 {
    font-size: 16px;
    font-weight: normal;
    color: #333;
    margin-bottom: 15px;
}

.value-item p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* 页脚样式 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.foot-info {
    display: grid;
    grid-template-columns: 200px repeat(3, 1fr);
    gap: 30px;
    align-items: start;
}

.foot-logo h3 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #fff;
}

.foot-logo p {
    color: #999;
    font-size: 14px;
    margin: 0;
}

.foot-links h4 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #fff;
}

.foot-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.foot-links li {
    margin-bottom: 10px;
}

.foot-links a {
    color: #999;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.foot-links a:hover {
    color: #fff;
}

.foot-contact h4 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #fff;
}

.foot-contact .contact-details {
    list-style: none;
    padding: 0;
    margin: 0;
}

.foot-contact .contact-details li {
    margin-bottom: 10px;
    color: #999;
    font-size: 14px;
    line-height: 1.6;
}

.foot-contact .contact-details strong {
    color: #fff;
    margin-right: 8px;
}

.gotop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: #0066cc;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.gotop.visible {
    opacity: 1;
    visibility: visible;
}

.gotop a {
    color: #fff;
    font-size: 12px;
    text-decoration: none;
    text-align: center;
    line-height: 1.4;
    padding: 0 6px;
    word-break: break-word;
    display: block;
    overflow: visible;
    white-space: normal;
    max-height: none;
}

.gotop:hover {
    background-color: #0052a3;
    transform: translateY(-5px);
}

.foot {
    margin-bottom: 30px;
}

.foot .tit {
    margin-bottom: 20px;
}

.foot .tit h3 {
    font-size: 18px;
    font-weight: bold;
    color: #fff;
}

.friend-link {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.friend-link li a {
    color: #999;
    font-size: 14px;
    transition: color 0.3s ease;
}

.friend-link li a:hover {
    color: #fff;
}

.foot2 {
    border-top: 1px solid #444;
    padding-top: 20px;
    font-size: 14px;
    color: #999;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.foot2 a {
    color: #999;
    transition: color 0.3s ease;
}

.foot2 a:hover {
    color: #fff;
}