/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

a {
    color: #007bff;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #0056b3;
    text-decoration: none;
}

/* 导航栏样式 */
.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
}

.navbar-brand .text-primary {
    color: #007bff;
}

.nav-link {
    font-size: 1rem;
    margin-left: 1rem;
}

/* 页面标题样式 */
.page-header {
    background-color: #f8f9fa;
    padding: 6rem 0 3rem;
    text-align: center;
    margin-top: 56px;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: bold;
    color: #333;
}

/* 首屏大图样式 */
.hero {
    height: 100vh;
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://p11-flow-imagex-sign.byteimg.com/tos-cn-i-a9rns2rl98/rc/pc/super_tool/ee9ee7f342a44970be08b71dc3344db8~tplv-a9rns2rl98-image.image?lk3s=8e244e95&rcl=202605161302476F1C25E8313B366F5F80&rrcfp=f06b921b&x-expires=1781499849&x-signature=CcKHhoXIP60Fbrx4gL%2FK0CuJ6i8%3D');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-align: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

/* 区块标题样式 */
.section-title {
    font-size: 2rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 3px;
    background-color: #007bff;
}

.section-title.text-center::after {
    left: 50%;
    transform: translateX(-50%);
}

/* 企业简介样式 */
.about {
    padding: 5rem 0;
}

.about img {
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 产品展示样式 */
.products {
    padding: 5rem 0;
}

.product-card {
    border: none;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 2rem;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.product-card img {
    height: 200px;
    object-fit: cover;
}

/* 工程案例样式 */
.cases {
    padding: 5rem 0;
}

.case-card {
    border: none;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 2rem;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.case-card img {
    height: 300px;
    object-fit: cover;
}

/* 新闻资讯样式 */
.news {
    padding: 5rem 0;
}

.news-card {
    border: none;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 2rem;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

/* 联系我们样式 */
.contact {
    padding: 5rem 0;
}

.contact-info {
    background-color: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.contact-form {
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 页脚样式 */
.footer {
    background-color: #343a40;
    color: #fff;
    padding: 3rem 0 1rem;
}

.footer h3 {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.footer ul li {
    margin-bottom: 0.5rem;
}

.footer ul li a {
    color: #adb5bd;
    transition: color 0.3s;
}

.footer ul li a:hover {
    color: #fff;
}

.footer .text-center {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #495057;
}

/* 关于我们页面样式 */
.about-intro {
    padding: 5rem 0;
}

.about-intro img {
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.culture {
    padding: 5rem 0;
}

.culture-card {
    text-align: center;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 2rem;
}

.culture-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.culture-card .card-icon {
    font-size: 3rem;
    color: #007bff;
    margin-bottom: 1rem;
}

.history {
    padding: 5rem 0;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: #007bff;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: #fff;
    border: 4px solid #007bff;
    border-radius: 50%;
    top: 15px;
    z-index: 1;
}

.timeline-item:nth-child(odd)::after {
    right: -10px;
}

.timeline-item:nth-child(even)::after {
    left: -10px;
}

.timeline-content {
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.timeline-content h3 {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.certifications {
    padding: 5rem 0;
}

.cert-card {
    text-align: center;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 2rem;
}

.cert-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.cert-card .cert-icon {
    font-size: 3rem;
    color: #007bff;
    margin-bottom: 1rem;
}

/* 产品中心页面样式 */
.product-nav {
    background-color: #f8f9fa;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.product-nav .nav-pills .nav-link {
    color: #333;
    border-radius: 0;
    margin: 0 0.5rem;
}

.product-nav .nav-pills .nav-link.active {
    background-color: #007bff;
    color: #fff;
}

.product-detail {
    padding: 3rem 0;
    border-bottom: 1px solid #e9ecef;
}

.product-detail:last-child {
    border-bottom: none;
}

.product-detail img {
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.product-detail h3 {
    font-size: 1.5rem;
    font-weight: bold;
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.product-detail h4 {
    font-size: 1.2rem;
    font-weight: bold;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.product-detail ul {
    padding-left: 1.5rem;
}

.product-detail ul li {
    margin-bottom: 0.5rem;
}

/* 工程案例页面样式 */
.case-nav {
    background-color: #f8f9fa;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.case-nav .nav-pills .nav-link {
    color: #333;
    border-radius: 0;
    margin: 0 0.5rem;
}

.case-nav .nav-pills .nav-link.active {
    background-color: #007bff;
    color: #fff;
}

.case-detail {
    padding: 3rem 0;
    border-bottom: 1px solid #e9ecef;
}

.case-detail:last-child {
    border-bottom: none;
}

.case-detail img {
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.case-detail h3 {
    font-size: 1.5rem;
    font-weight: bold;
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.case-detail h4 {
    font-size: 1.2rem;
    font-weight: bold;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.case-detail ul {
    padding-left: 1.5rem;
}

.case-detail ul li {
    margin-bottom: 0.5rem;
}

/* 新闻资讯页面样式 */
.news-nav {
    background-color: #f8f9fa;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.news-nav .nav-pills .nav-link {
    color: #333;
    border-radius: 0;
    margin: 0 0.5rem;
}

.news-nav .nav-pills .nav-link.active {
    background-color: #007bff;
    color: #fff;
}

.news-section {
    padding: 3rem 0;
    border-bottom: 1px solid #e9ecef;
}

.news-section:last-child {
    border-bottom: none;
}

/* 联系我们页面样式 */
.contact-info {
    padding: 5rem 0;
}

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.info-item i {
    font-size: 2rem;
    color: #007bff;
    margin-right: 1rem;
    min-width: 40px;
}

.info-content h3 {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.map-container {
    height: 400px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.map-placeholder {
    height: 100%;
    background-color: #f8f9fa;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
}

.map-placeholder h3 {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.contact-form {
    padding: 5rem 0;
}

.faq {
    padding: 5rem 0;
}

.faq .accordion-item {
    margin-bottom: 1rem;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.faq .accordion-header {
    background-color: #f8f9fa;
}

.faq .accordion-button {
    font-weight: bold;
    border-radius: 8px;
}

.faq .accordion-button:not(.collapsed) {
    background-color: #e9ecef;
    color: #007bff;
}

/* 加入我们页面样式 */
.recruitment {
    padding: 5rem 0;
}

.job-card {
    border: none;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 2rem;
}

.job-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.job-header {
    background-color: #007bff;
    color: #fff;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.job-header h3 {
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0;
}

.job-salary {
    font-size: 1.2rem;
    font-weight: bold;
}

.job-body {
    padding: 1.5rem;
}

.job-info {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.job-info i {
    font-size: 1.2rem;
    color: #007bff;
    margin-right: 0.5rem;
    min-width: 24px;
}

.job-description {
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.job-requirements h4 {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.job-requirements ul {
    padding-left: 1.5rem;
}

.job-requirements ul li {
    margin-bottom: 0.5rem;
}

.benefits {
    padding: 5rem 0;
}

.benefit-card {
    text-align: center;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 2rem;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.benefit-icon {
    font-size: 3rem;
    color: #007bff;
    margin-bottom: 1rem;
}

.benefit-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.process {
    padding: 5rem 0;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 3rem;
}

.step {
    flex: 1;
    text-align: center;
    padding: 1rem;
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: #007bff;
    color: #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.step-arrow {
    display: none;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item:nth-child(odd)::after,
    .timeline-item:nth-child(even)::after {
        left: 21px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .step {
        width: 100%;
        margin-bottom: 2rem;
    }
    
    .step-arrow {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .product-card img,
    .case-card img {
        height: 150px;
    }
    
    .job-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .job-salary {
        margin-top: 0.5rem;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-content p {
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
    
    .product-card img,
    .case-card img {
        height: 120px;
    }
    
    .info-item {
        flex-direction: column;
    }
    
    .info-item i {
        margin-bottom: 0.5rem;
    }
}

/* 图片懒加载样式 */
.lazy {
    opacity: 0;
    transition: opacity 0.3s;
}

.lazy.loaded {
    opacity: 1;
}

/* 滚动动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}