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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    width: 1440px;
    margin: 0 auto;
}

/* 顶部导航栏 */
.top-nav {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1000;
    height: 88px;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0;
    height: 100%;
}

/* Logo样式 */
.logo img {
    height: 80px;
    margin-left: -200px;
}

/* 导航菜单 */
.main-nav ul {
    display: flex;
    list-style: none;
}

.main-nav li {
    position: relative;
    width: 150px;
    text-align: center;
}

.main-nav a {
    text-decoration: none;
    color: #333;
    font-size: 18px;
    font-weight: 500;
    line-height: 40px;
    display: block;
    transition: color 0.3s ease;
}

.main-nav a:hover {
    color: #ff6600;
}

/* 下拉菜单 */
.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    min-width: 150px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border-radius: 4px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-content a {
    padding: 10px 15px;
    font-size: 14px;
    border-bottom: 1px solid #f5f5f5;
}

.dropdown-content a:last-child {
    border-bottom: none;
}



/* Banner区域 */
.banner {
    position: relative;
    height: 600px;
    overflow: hidden;
}

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

.banner-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
}

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

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

.banner-content {
    position: absolute;
    top: 50%;
    left: 10%;
    transform: translateY(-50%);
    max-width: 500px;
    z-index: 10;
}

.banner-content h1 {
    font-size: 36px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    line-height: 1.2;
}

.banner-content p {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
}

.cta-btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: #ff6600;
    color: #fff;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cta-btn:hover {
    background-color: #e55a00;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(255,102,0,0.3);
}

/* 轮播指示器 */
.banner-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 20;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255,102,0,0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background-color: #ff6600;
    width: 30px;
    border-radius: 6px;
}

/* 响应式设计 */
@media (max-width: 1440px) {
    .container {
        width: 95%;
    }
}

@media (max-width: 1200px) {
    .container {
        width: 95%;
    }
}

@media (max-width: 992px) {
    .nav-content {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .main-nav {
        order: 3;
        width: 100%;
        justify-content: center;
    }
    
    .banner-content h1 {
        font-size: 28px;
    }
    
    .banner-content p {
        font-size: 16px;
    }
}

@media (max-width: 768px) {
    .main-nav li {
        margin: 0 10px;
    }
    
    .banner {
        height: 400px;
    }
    
    .banner-content {
        left: 5%;
        max-width: 80%;
    }
    
    .banner-content h1 {
        font-size: 24px;
    }
}

@media (max-width: 576px) {
    .main-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .main-nav li {
        margin: 0;
    }
    
    .dropdown-content {
        position: static;
        box-shadow: none;
        border: 1px solid #f5f5f5;
        margin-top: 5px;
    }
    
    .banner {
        height: 300px;
    }
    
    .banner-content h1 {
        font-size: 20px;
    }
    
    .banner-content p {
        font-size: 14px;
        margin-bottom: 20px;
    }
    
    .cta-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}

/* 技术核心板块区 */
.tech-core {
    background-color: #f5f5f5;
    padding: 20px 0 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 30px;
    padding: 40px 0 0;
}

.section-title h2 {
    font-size: 32px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.section-title p {
    font-size: 16px;
    color: #666;
    margin: 0 auto;
}

/* 技术标签 */
.tech-tabs {
    display: flex;
    margin-bottom: 0;
    background-color: #fff;
    overflow: hidden;
    box-shadow: none;
    border-bottom: none;
    width: 100%;
}

.tech-tab {
    flex: 1;
    line-height: 1.5;
    padding: 24px 0;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #333;
    font-size: 24px;
    font-weight: 500;
    border: none;
    background: #fff;
    outline: none;
    text-align: center;
    border-right: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
}

.tech-tab:last-child {
    border-right: none;
}

.tech-tab:hover {
    background-color: #e8e8e8;
}

.tech-tab.active {
    background-color: #ff6600;
    color: #fff;
}

/* 技术内容 */
.tech-content {
    background-color: #f5f5f5;
    padding: 0;
    box-shadow: none;
}

.tech-details {
    display: none;
    flex-direction: row;
    align-items: stretch;
    gap: 0;
    background-color: #f5f5f5;
    padding: 0;
    border-radius: 0;
    overflow: hidden;
    height: 480px;
}

.tech-details.active {
    display: flex;
}

.tech-text {
    width: 500px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background-color: #fff;
    padding: 50px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.tech-text .tech-icon {
    margin-bottom: 35px;
    text-align: center;
}

.tech-text .tech-icon img {
    height: 120px;
    transition: transform 0.3s ease;
}

.tech-text .tech-icon img:hover {
    transform: scale(1.05);
}

.tech-text h3 {
    font-size: 26px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
    line-height: 1.3;
}

.tech-text h4 {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
    font-weight: 500;
    text-align: center;
}

.tech-text ul {
    list-style: none;
    padding: 0;
    margin-top: 0;
}

.tech-text li {
    font-size: 18px;
    color: #555;
    margin-bottom: 35px;
    padding: 0 0 0 20px;
    border: none;
    border-radius: 0;
    background-color: transparent;
    position: relative;
    line-height: 1.4;
}

.tech-text li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #ff6600;
    font-size: 20px;
    font-weight: bold;
}

.tech-image {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: stretch;
    justify-content: center;
}

.tech-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.tech-image img:hover {
    transform: scale(1.02);
}



.section-title p {
    font-size: 16px;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

.business-content {
    display: flex;
    align-items: stretch;
    gap: 0;
    width: 100%;
    margin-left: calc(-50vw + 50%);
    max-width: none;
    height: 680px;
}

.business-slider {
    flex: 1;
    position: relative;
    min-width: 0;
}

.slider-images {
    display: flex;
    height: 680px;
    overflow: hidden;
}

.slider-image {
    flex: 1;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
}

.slider-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    box-shadow: inset 0 0 0 2000px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    z-index: 1;
}

.slider-image.active::before {
    box-shadow: none;
}

.slider-image:hover {
    flex: 1;
}

.slider-image.active {
    flex: 3;
}

.slider-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s ease;
}

.slider-image:hover img {
    transform: scale(1.05);
}

.slider-image.active {
    flex: 3;
}

.image-label {
    position: absolute;
    bottom: 20px;
    left: 20px;
    color: #fff;
    font-size: 18px;
    font-weight: bold;
    background-color: rgba(0,0,0,0.5);
    padding: 10px 20px;
    border-radius: 20px;
}

.business-info {
    width: 450px;
    background-color: #f9f9f9;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex-shrink: 0;
}

.info-content {
    display: none;
}

.info-content.active {
    display: block;
}

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

.info-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.more-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #ff6600;
    color: #fff;
    border: none;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 20px;
}

.more-btn:hover {
    background-color: #e55a00;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(255,102,0,0.3);
}

/* 新闻动态区 */
.news-section {
    background-color: #f9f9f9;
    padding: 80px 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 28px;
    font-weight: bold;
    color: #333;
    position: relative;
    background-image: url('img/新闻下划线.png');
    background-repeat: no-repeat;
    background-size: contain;
    padding-bottom: 20px;
}

/* .section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: #ff6600;
} */

.more-link {
    text-decoration: none;
    color: #666;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.more-link:hover {
    color: #ff6600;
}

.news-content {
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 28px;
    font-weight: bold;
    color: #333;
    position: relative;
    background-image: url('img/新闻下划线.png');
    background-repeat: no-repeat;
    background-size: contain;
    padding-bottom: 20px;
}

.news-main {
    display: flex;
    gap: 40px;
    align-items: stretch;
}

.news-image {
    flex: 1;
    min-width: 400px;
    display: flex;
    align-items: stretch;
}

.news-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.news-list {
    flex: 1;
    list-style: none;
    padding: 0;
}

.news-item {
    position: relative;
    padding: 30px 0;
}

.news-content-wrapper {
    display: flex;
    height: 100%;
    align-items: flex-start;
}

.news-date-section {
    display: flex;
    flex-direction: column;
    margin-right: 40px;
    min-width: 80px;
}

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

.news-year {
    font-size: 30px;
    font-weight: bold;
    color: #333;
}

.news-date {
    font-size: 18px;
    color: #6a6a6a;
}

.news-tags {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.news-title {
    font-size: 18px;
    color: #6a6a6a;
    margin-bottom: 10px;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.news-title:hover {
    color: #ff6600;
}

.news-source {
    font-size: 12px;
    color: #787878;
    text-align: right;
    margin-top: 10px;
}

.news-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: #eee;
}

.news-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 1px;
    background-color: #ff6600;
    z-index: 1;
}

/* 底部 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    align-items: flex-start;
}

.footer-logo {
    flex: 0 0 200px;
    margin-right: 200px;
}

.footer-logo img {
    height: 80px;
    margin-bottom: 20px;
}

.footer-column {
    flex: 1;
    margin-left: 20px;
}

.footer-column:nth-child(4) {
    flex: 1.5;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #fff;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 10px;
}

.footer-column a {
    text-decoration: none;
    color: #ccc;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #fff;
}

.footer-column li {
    font-size: 14px;
    color: #ccc;
    margin-bottom: 10px;
    line-height: 1.5;
}

.footer-qr {
    text-align: left;
    margin-top: 10px;
}

.footer-qr img {
    width: 120px;
    height: auto;
    margin-bottom: 10px;
}

.footer-qr p {
    font-size: 14px;
    color: #ccc;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #444;
}

.footer-bottom p {
    font-size: 14px;
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }
    
    .business-content {
        flex-direction: column;
    }
    
    .business-features,
    .business-image {
        width: 100%;
    }
    
    .news-content {
        flex-direction: column;
    }
    
    .news-image,
    .news-list {
        width: 100%;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .tech-core,
    .business-core,
    .news-section {
        padding: 60px 0;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
    
    .tech-item {
        padding: 20px;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .footer {
        padding: 40px 0 20px;
    }
}