* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    font-size: 14px;
    color: #333;
    line-height: 1.6;
    background-color: #f5f5f5;
}

.container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 顶部栏 */
.top-bar {
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="1200" height="36"><rect fill="%23f5f5f5" width="1200" height="36"/></svg>') no-repeat center;
    background-size: cover;
    height: 36px;
    line-height: 36px;
    color: #999;
    font-size: 12px;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar a {
    color: #999;
    text-decoration: none;
    margin: 0 5px;
}

.top-bar a:hover {
    color: #f13a3a;
}

.top-bar span {
    color: #999;
    margin: 0 5px;
}

/* Logo区域 */
.logo-section {
    background-color: #fff;
    padding: 20px 0;
}

.logo-section .container {
    display: flex;
    align-items: center;
}

.logo {
    max-width: 322px;
    height: auto;
}

/* 主导航 */
.main-nav {
    background-color: #353535;
    height: 60px;
    line-height: 60px;
}

.nav-menu {
    list-style: none;
    display: flex;
    justify-content: space-around;
    position: relative;
}

.nav-menu > li {
    position: relative;
    flex: 1;
    text-align: center;
}

.nav-menu > li > a {
    display: block;
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: normal;
    height: 60px;
    line-height: 60px;
    transition: all 0.3s;
}

.nav-menu > li:hover > a,
.nav-menu > li > a:hover {
    background-color: #f13a3a;
    color: #fff;
}

/* 下拉菜单 */
.has-submenu {
    position: relative;
}

.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #f13a3a;
    list-style: none;
    min-width: 161px;
    display: none;
    z-index: 1000;
    padding: 10px 0;
}

.has-submenu:hover .submenu {
    display: block;
}

.submenu li {
    height: 40px;
    line-height: 40px;
}

.submenu li a {
    display: block;
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    padding: 0 20px;
    transition: all 0.3s;
}

.submenu li:hover {
    background-color: #fff;
}

.submenu li:hover a {
    color: #000;
}

/* 轮播图区域 */
.banner-section {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
}

.banner-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.banner-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.banner-item.active {
    opacity: 1;
}

.banner-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-text {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    padding: 20px 40px;
    border-radius: 5px;
}

.banner-text h2 {
    font-size: 36px;
    margin-bottom: 10px;
}

.banner-text p {
    font-size: 18px;
}

.banner-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background-color 0.3s;
}

.dot.active {
    background-color: #fff;
}

/* 产品展示 */
.products-section {
    background-color: #fff;
    padding: 50px 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    color: #333;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: #f13a3a;
}

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

.product-item {
    text-align: center;
    transition: transform 0.3s;
}

.product-item:hover {
    transform: translateY(-5px);
}

.product-image {
    position: relative;
    overflow: hidden;
    border-radius: 5px;
    margin-bottom: 15px;
}

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

.product-item:hover .product-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(241, 58, 58, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.product-item:hover .product-overlay {
    opacity: 1;
}

.product-link {
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    padding: 10px 30px;
    border: 2px solid #fff;
    border-radius: 5px;
    transition: all 0.3s;
}

.product-link:hover {
    background-color: #fff;
    color: #f13a3a;
}

.product-item h3 {
    font-size: 18px;
    color: #333;
    font-weight: normal;
}

/* 公司简介 */
.about-section {
    background-color: #f5f5f5;
    padding: 50px 0;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: justify;
}

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

/* 特性说明 */
.features-section {
    background-color: #fff;
    padding: 50px 0;
}

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

.feature-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
    text-align: center;
}

.feature-item h3 {
    font-size: 18px;
    color: #f13a3a;
    margin-bottom: 15px;
}

.feature-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 案例展示 */
.cases-section {
    background-color: #f5f5f5;
    padding: 50px 0;
}

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

.case-item {
    background-color: #fff;
    border-radius: 5px;
    overflow: hidden;
    transition: transform 0.3s;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.case-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.case-item:hover .case-image img {
    transform: scale(1.1);
}

.case-info {
    padding: 20px;
}

.case-date {
    color: #999;
    font-size: 12px;
    display: block;
    margin-bottom: 10px;
}

.case-info h3 {
    font-size: 16px;
    color: #333;
    font-weight: normal;
    line-height: 1.6;
}

/* 产品详细介绍 */
.product-detail-section {
    background-color: #fff;
    padding: 50px 0;
}

.detail-content {
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: center;
}

.detail-content h2 {
    font-size: 36px;
    color: #333;
    margin-bottom: 10px;
}

.english-title {
    font-size: 18px;
    color: #999;
    font-weight: normal;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.detail-content p {
    color: #666;
    line-height: 1.8;
    text-align: justify;
    margin-bottom: 20px;
}

.read-more {
    display: inline-block;
    color: #f13a3a;
    text-decoration: none;
    padding: 10px 30px;
    border: 2px solid #f13a3a;
    border-radius: 5px;
    transition: all 0.3s;
}

.read-more:hover {
    background-color: #f13a3a;
    color: #fff;
}

.detail-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.detail-img-item {
    text-align: center;
}

.detail-img-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 15px;
}

.detail-img-item p {
    font-size: 16px;
    color: #333;
}

/* 其他产品 */
.other-products-section {
    background-color: #f5f5f5;
    padding: 50px 0;
}

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

.other-product-item {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    text-align: center;
}

.other-product-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 15px;
}

.other-product-item h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
}

.other-product-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 页脚 */
.footer {
    background-color: #353535;
    color: #ccc;
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
}

.footer-info p {
    margin-bottom: 10px;
    font-size: 14px;
}

.footer-info strong {
    color: #fff;
}

.footer-qrcode {
    text-align: center;
}

.qrcode-placeholder {
    width: 120px;
    height: 120px;
    background-color: #555;
    border: 2px solid #666;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    margin-top: 10px;
}

.qrcode-img {
    width: 120px;
    height: 120px;
    margin-top: 10px;
    border: 2px solid #666;
    border-radius: 5px;
    object-fit: cover;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #555;
    font-size: 12px;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        width: 100%;
        padding: 0 20px;
    }
}

@media (max-width: 768px) {
    .products-grid,
    .features-grid,
    .cases-list,
    .detail-images,
    .other-products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .nav-menu {
        flex-wrap: wrap;
    }
    
    .nav-menu > li {
        flex: 0 0 50%;
    }
}

@media (max-width: 480px) {
    .products-grid,
    .features-grid,
    .cases-list,
    .detail-images,
    .other-products-grid {
        grid-template-columns: 1fr;
    }
    
    .banner-section {
        height: 250px;
    }
    
    .banner-text h2 {
        font-size: 24px;
    }
    
    .section-title {
        font-size: 24px;
    }
}

/* 产品详情页面样式 */
.products-detail-page {
    background-color: #f5f5f5;
    padding: 50px 0;
}

.product-detail-item {
    background-color: #fff;
    margin-bottom: 30px;
    padding: 30px;
    border-radius: 5px;
}

.product-detail-content {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.product-detail-image {
    flex: 0 0 400px;
}

.product-detail-image img {
    width: 100%;
    height: auto;
    border-radius: 5px;
}

.product-detail-text {
    flex: 1;
}

.product-detail-text h3 {
    font-size: 28px;
    color: #333;
    margin-bottom: 20px;
    border-bottom: 3px solid #f13a3a;
    padding-bottom: 10px;
}

.product-detail-text p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-features {
    list-style: none;
    padding: 0;
    margin-top: 20px;
}

.product-features li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    color: #666;
    font-size: 15px;
}

.product-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #f13a3a;
    font-weight: bold;
    font-size: 18px;
}

/* 关于我们页面样式 */
.about-page {
    background-color: #f5f5f5;
    padding: 50px 0;
}

.about-page-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-intro,
.about-history,
.about-service {
    background-color: #fff;
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 5px;
}

.about-intro h3,
.about-history h3,
.about-service h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 20px;
    border-bottom: 3px solid #f13a3a;
    padding-bottom: 10px;
}

.about-intro p,
.about-history p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.about-values {
    background-color: #fff;
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 5px;
}

.about-values h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 30px;
    border-bottom: 3px solid #f13a3a;
    padding-bottom: 10px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.value-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
    border-left: 4px solid #f13a3a;
}

.value-item h4 {
    font-size: 20px;
    color: #f13a3a;
    margin-bottom: 15px;
}

.value-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.6;
}

.service-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    padding: 0;
}

.service-list li {
    padding: 10px;
    padding-left: 30px;
    position: relative;
    color: #666;
    font-size: 15px;
    background-color: #f9f9f9;
    border-radius: 5px;
}

.service-list li::before {
    content: "•";
    position: absolute;
    left: 15px;
    color: #f13a3a;
    font-weight: bold;
    font-size: 20px;
}

/* 联系我们页面样式 */
.contact-page {
    background-color: #f5f5f5;
    padding: 50px 0;
}

.contact-content {
    background-color: #fff;
    padding: 40px;
    border-radius: 5px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.contact-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
}

.contact-item h3 {
    font-size: 20px;
    color: #f13a3a;
    margin-bottom: 15px;
}

.contact-item p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
}

.contact-form {
    margin-top: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-size: 15px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 15px;
    font-family: inherit;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #f13a3a;
}

.submit-btn {
    background-color: #f13a3a;
    color: #fff;
    padding: 12px 40px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: #d32f2f;
}

/* 案例展示页面样式 */
.cases-page {
    background-color: #f5f5f5;
    padding: 50px 0;
}

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

.case-section-title {
    font-size: 28px;
    color: #333;
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 3px solid #f13a3a;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.case-item-large {
    background-color: #fff;
    border-radius: 5px;
    overflow: hidden;
    transition: transform 0.3s;
}

.case-item-large:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.case-item-large .case-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

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

.case-item-large:hover .case-image img {
    transform: scale(1.1);
}

.case-item-large .case-info {
    padding: 25px;
}

.case-item-large .case-info h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
}

.case-item-large .case-info p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

@media (max-width: 768px) {
    .product-detail-content {
        flex-direction: column;
    }
    
    .product-detail-image {
        flex: 1;
    }
    
    .values-grid,
    .service-list {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
}

/* 新闻技术页面样式 */
.news-page {
    background-color: #f5f5f5;
    padding: 50px 0;
}

.news-section,
.tech-section,
.industry-section {
    background-color: #fff;
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 5px;
}

.news-section-title {
    font-size: 24px;
    color: #333;
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 3px solid #f13a3a;
}

.news-list {
    list-style: none;
}

.news-item {
    padding: 20px 0;
    border-bottom: 1px solid #eee;
}

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

.news-date {
    color: #999;
    font-size: 14px;
    margin-bottom: 10px;
}

.news-content h4 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
}

.news-content p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.tech-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
    border-left: 4px solid #f13a3a;
}

.tech-item h4 {
    font-size: 18px;
    color: #f13a3a;
    margin-bottom: 15px;
}

.tech-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.6;
}

/* 施工方案页面样式 */
.construction-page {
    background-color: #f5f5f5;
    padding: 50px 0;
}

.construction-section,
.quality-section,
.notice-section,
.example-section {
    background-color: #fff;
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 5px;
}

.construction-section-title {
    font-size: 24px;
    color: #333;
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 3px solid #f13a3a;
}

.construction-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.step-item {
    text-align: center;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
}

.step-number {
    width: 50px;
    height: 50px;
    line-height: 50px;
    background-color: #f13a3a;
    color: #fff;
    border-radius: 50%;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 15px;
}

.step-item h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 15px;
}

.step-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.quality-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
}

.quality-item h4 {
    font-size: 20px;
    color: #f13a3a;
    margin-bottom: 15px;
}

.quality-item ul {
    list-style: none;
    padding: 0;
}

.quality-item ul li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: #666;
    font-size: 15px;
}

.quality-item ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #f13a3a;
    font-weight: bold;
}

.notice-content h4 {
    font-size: 18px;
    color: #333;
    margin: 20px 0 15px;
}

.notice-content ul {
    margin-bottom: 20px;
    padding-left: 25px;
}

.notice-content ul li {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 10px;
}

.example-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.example-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
}

.example-item h4 {
    font-size: 18px;
    color: #f13a3a;
    margin-bottom: 15px;
}

.example-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 10px;
}

/* 服务政策和隐私协议页面样式 */
.policy-page,
.privacy-page {
    background-color: #f5f5f5;
    padding: 50px 0;
}

.policy-content,
.privacy-content {
    background-color: #fff;
    padding: 40px;
    border-radius: 5px;
    max-width: 1000px;
    margin: 0 auto;
}

.policy-section,
.privacy-section {
    margin-bottom: 40px;
}

.policy-section h3,
.privacy-section h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f13a3a;
}

.policy-section h4,
.privacy-section h4 {
    font-size: 18px;
    color: #333;
    margin: 20px 0 15px;
}

.policy-section p,
.privacy-section p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.policy-section ul,
.privacy-section ul {
    margin-bottom: 20px;
    padding-left: 25px;
}

.policy-section ul li,
.privacy-section ul li {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 10px;
}

.policy-section ol {
    margin-bottom: 20px;
    padding-left: 25px;
}

.policy-section ol li {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 10px;
}

.policy-update,
.privacy-update {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    text-align: right;
    color: #999;
    font-size: 14px;
}

/* 网站地图页面样式 */
.sitemap-page {
    background-color: #f5f5f5;
    padding: 50px 0;
}

.sitemap-content {
    background-color: #fff;
    padding: 40px;
    border-radius: 5px;
    max-width: 1000px;
    margin: 0 auto;
}

.sitemap-section {
    margin-bottom: 40px;
}

.sitemap-section h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f13a3a;
}

.sitemap-list {
    list-style: none;
    padding: 0;
}

.sitemap-list li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    border-bottom: 1px solid #eee;
}

.sitemap-list li:last-child {
    border-bottom: none;
}

.sitemap-list li::before {
    content: "▶";
    position: absolute;
    left: 0;
    color: #f13a3a;
    font-size: 12px;
}

.sitemap-list li a {
    color: #333;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s;
}

.sitemap-list li a:hover {
    color: #f13a3a;
}

.sitemap-list li {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
}

.sitemap-contact {
    background-color: #f9f9f9;
    padding: 25px;
    border-radius: 5px;
    border-left: 4px solid #f13a3a;
}

.sitemap-contact p {
    margin-bottom: 12px;
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

.sitemap-contact strong {
    color: #333;
    font-weight: 600;
}

/* 服务支持页面样式 */
.support-page {
    background-color: #f5f5f5;
    padding: 50px 0;
}

.support-section,
.faq-section,
.tech-support-section,
.support-contact-section,
.download-section {
    background-color: #fff;
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 5px;
}

.support-section-title {
    font-size: 24px;
    color: #333;
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 3px solid #f13a3a;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.support-item {
    text-align: center;
    padding: 25px;
    background-color: #f9f9f9;
    border-radius: 5px;
    transition: transform 0.3s;
}

.support-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.support-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.support-item h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 15px;
}

.support-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

.faq-list {
    list-style: none;
    padding: 0;
}

.faq-item {
    padding: 20px 0;
    border-bottom: 1px solid #eee;
}

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

.faq-question {
    font-size: 18px;
    color: #333;
    margin-bottom: 15px;
    font-weight: 600;
}

.faq-answer {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    padding-left: 20px;
}

.tech-support-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.tech-support-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
    border-left: 4px solid #f13a3a;
}

.tech-support-item h4 {
    font-size: 18px;
    color: #f13a3a;
    margin-bottom: 15px;
}

.tech-support-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

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

.support-contact-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
    text-align: center;
}

.support-contact-item h4 {
    font-size: 18px;
    color: #f13a3a;
    margin-bottom: 15px;
}

.support-contact-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 10px;
}

.support-contact-item strong {
    color: #333;
}

.download-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.download-item {
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.download-item h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 8px;
}

.download-item p {
    font-size: 14px;
    color: #666;
    margin: 0;
}

.download-btn {
    background-color: #f13a3a;
    color: #fff;
    padding: 8px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 14px;
    transition: background-color 0.3s;
}

.download-btn:hover {
    background-color: #d32f2f;
}

@media (max-width: 768px) {
    .tech-grid,
    .construction-steps,
    .quality-grid,
    .example-list {
        grid-template-columns: 1fr;
    }
    
    .policy-content,
    .privacy-content {
        padding: 20px;
    }
    
    .sitemap-content {
        padding: 20px;
    }
    
    .support-grid,
    .tech-support-content,
    .support-contact-info,
    .download-list {
        grid-template-columns: 1fr;
    }
    
    .download-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
}