/* ===== 基础样式重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a5276;
    --primary-light: #2980b9;
    --secondary-color: #27ae60;
    --accent-color: #e74c3c;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-dark: #1a1a2e;
    --white: #fff;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 5px 20px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

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

/* ===== 按钮样式 ===== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-link {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn-link:hover {
    color: var(--primary-light);
    gap: 10px;
}

/* ===== 顶部信息栏 ===== */
.top-bar {
    background-color: var(--bg-dark);
    color: var(--white);
    padding: 8px 0;
    font-size: 14px;
}

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

.top-info span {
    margin-right: 20px;
}

.top-info i {
    margin-right: 5px;
    color: var(--primary-light);
}

.top-links a {
    margin-left: 15px;
    color: #ccc;
}

.top-links a:hover {
    color: var(--white);
}

/* ===== 导航栏 ===== */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo a {
    display: flex;
    flex-direction: column;
}

.logo a img {
    max-height: 50px;
}

.logo h1 {
    font-size: 24px;
    color: var(--primary-color);
    font-weight: 700;
}

.logo span {
    font-size: 12px;
    color: var(--text-light);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    gap: 5px;
}

.nav-menu > li {
    position: relative;
}

.nav-menu > li > a {
    display: block;
    padding: 10px 20px;
    color: var(--text-color);
    font-weight: 500;
    border-radius: 4px;
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    color: var(--primary-color);
    background-color: rgba(26, 82, 118, 0.1);
}

.nav-menu > li > a i {
    font-size: 10px;
    margin-left: 5px;
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background-color: var(--white);
    box-shadow: var(--shadow);
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

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

.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-color);
    font-size: 14px;
}

.dropdown-menu li a:hover {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Banner轮播 ===== */
.banner {
    position: relative;
    height: 500px;
    overflow: hidden;
}

.banner-slider {
    height: 100%;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
}

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

.banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.banner-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding: 0 20px;
}

.banner-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.banner-content p {
    font-size: 20px;
    margin-bottom: 30px;
    max-width: 600px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

.banner-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

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

.banner-dots .dot.active {
    background-color: var(--white);
    transform: scale(1.2);
}

.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(255,255,255,0.2);
    border: none;
    border-radius: 50%;
    color: var(--white);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
}

.banner-arrow:hover {
    background-color: rgba(255,255,255,0.4);
}

.banner-arrow.prev {
    left: 30px;
}

.banner-arrow.next {
    right: 30px;
}

/* ===== 通用Section样式 ===== */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 32px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.section-header p {
    font-size: 14px;
    color: var(--text-light);
    letter-spacing: 3px;
}

.section-header.light h2 {
    color: var(--white);
}

.section-header.light p {
    color: rgba(255,255,255,0.7);
}

/* ===== 关于我们 ===== */
.about-section {
    padding: 80px 0;
    background-color: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.feature-item {
    text-align: center;
    padding: 20px 10px;
    background-color: var(--bg-light);
    border-radius: 8px;
}

.feature-item i {
    font-size: 30px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.feature-item span {
    display: block;
    font-size: 14px;
    color: var(--text-color);
}

/* 占位图片样式 */
.placeholder-image {
    background: linear-gradient(135deg, #e0e0e0 0%, #f5f5f5 100%);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    color: #999;
}

.placeholder-image i {
    font-size: 60px;
    margin-bottom: 15px;
}

.placeholder-image span {
    font-size: 16px;
}

/* ===== 产品中心 ===== */
.products-section {
    padding: 80px 0;
    background-color: var(--bg-light);
}

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

.product-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.product-image {
    height: 220px;
    overflow: hidden;
}

.product-image .placeholder-image {
    width: 100%;
    height: 100%;
    min-height: 220px;
    border-radius: 0;
    background: linear-gradient(145deg, #f0f4f8 0%, #e8eef5 50%, #f5f7fa 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.product-image .placeholder-image i {
    font-size: 48px;
    color: #1a5276;
    opacity: 0.6;
    margin-bottom: 10px;
}

.product-image .placeholder-image span {
    font-size: 13px;
    color: #7f8c8d;
    font-weight: 500;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.product-info p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.6;
}

.products-more {
    text-align: center;
    margin-top: 40px;
}

/* ===== 核心优势 ===== */
.advantages-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
}

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

.advantage-card {
    text-align: center;
    padding: 40px 25px;
    background-color: rgba(255,255,255,0.1);
    border-radius: 8px;
    transition: var(--transition);
}

.advantage-card:hover {
    background-color: rgba(255,255,255,0.2);
    transform: translateY(-5px);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background-color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.advantage-icon i {
    font-size: 35px;
    color: var(--primary-color);
}

.advantage-card h3 {
    font-size: 20px;
    color: var(--white);
    margin-bottom: 15px;
}

.advantage-card p {
    font-size: 14px;
    color: rgba(255,255,255,0.8);
    line-height: 1.6;
}

/* ===== 应用领域 ===== */
.applications-section {
    padding: 80px 0;
    background-color: var(--white);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.application-card {
    text-align: center;
    padding: 30px 15px;
    background-color: var(--bg-light);
    border-radius: 8px;
    transition: var(--transition);
}

.application-card:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
}

.application-card:hover .application-icon i,
.application-card:hover h3,
.application-card:hover p {
    color: var(--white);
}

.application-icon {
    margin-bottom: 15px;
}

.application-icon i {
    font-size: 40px;
    color: var(--primary-color);
    transition: var(--transition);
}

.application-card h3 {
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 8px;
    transition: var(--transition);
}

.application-card p {
    font-size: 13px;
    color: var(--text-light);
    transition: var(--transition);
}

/* ===== 新闻资讯 ===== */
.news-section {
    padding: 80px 0;
    background-color: var(--bg-light);
}

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

.news-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.news-image {
    height: 180px;
    overflow: hidden;
}

.news-image .placeholder-image {
    min-height: 180px;
    border-radius: 0;
}

.news-image .placeholder-image i {
    font-size: 40px;
}

.news-content {
    padding: 25px;
}

.news-date {
    font-size: 13px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-content p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-more {
    text-align: center;
    margin-top: 40px;
}

/* ===== 合作伙伴 ===== */
.partners-section {
    padding: 60px 0;
    background-color: var(--white);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.partner-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    background-color: var(--bg-light);
    border-radius: 8px;
    transition: var(--transition);
}

.partner-logo:hover {
    box-shadow: var(--shadow);
}

.placeholder-logo {
    color: #999;
    font-size: 14px;
    text-align: center;
}

/* ===== 联系我们 ===== */
.contact-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    background-color: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.contact-info {
    padding: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--white);
}

.contact-info h2 {
    font-size: 28px;
    margin-bottom: 15px;
}

.contact-info > p {
    font-size: 15px;
    opacity: 0.9;
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-item i {
    font-size: 24px;
    width: 50px;
    height: 50px;
    background-color: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 16px;
    margin-bottom: 5px;
}

.contact-item p {
    font-size: 14px;
    opacity: 0.9;
}

.contact-form {
    padding: 50px;
}

.contact-form h3 {
    font-size: 24px;
    color: var(--text-color);
    margin-bottom: 25px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 82, 118, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ===== 页脚 ===== */
.footer {
    background-color: var(--bg-dark);
    color: #ccc;
    padding-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-about h3 {
    font-size: 24px;
    color: var(--white);
    margin-bottom: 15px;
}

.footer-about p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background-color: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.footer-links h4,
.footer-products h4,
.footer-contact h4 {
    font-size: 18px;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links ul li,
.footer-products ul li {
    margin-bottom: 10px;
}

.footer-links ul li a,
.footer-products ul li a {
    font-size: 14px;
    color: #999;
    transition: var(--transition);
}

.footer-links ul li a:hover,
.footer-products ul li a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-contact p {
    font-size: 14px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact i {
    color: var(--primary-light);
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 14px;
}

.footer-bottom a {
    color: var(--primary-light);
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--primary-light);
    transform: translateY(-5px);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .applications-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .top-bar .container {
        flex-direction: column;
        gap: 5px;
    }
    
    .top-info span {
        font-size: 12px;
    }
    
    .header .container {
        flex-wrap: wrap;
    }
    
    .nav {
        width: 100%;
        order: 3;
    }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        padding: 20px 0;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu > li > a {
        padding: 12px 0;
        border-bottom: 1px solid #eee;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 20px;
        display: none;
    }
    
    .dropdown.active .dropdown-menu {
        display: block;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .banner {
        height: 400px;
    }
    
    .banner-content h2 {
        font-size: 32px;
    }
    
    .banner-content p {
        font-size: 16px;
    }
    
    .banner-arrow {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .contact-info,
    .contact-form {
        padding: 30px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-contact p {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .banner {
        height: 350px;
    }
    
    .banner-content h2 {
        font-size: 26px;
    }
    
    .section-header h2 {
        font-size: 26px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr 1fr;
    }
    
    .applications-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===== 页面通用样式 ===== */
.page-banner {
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--white);
    transition: background-image 0.3s ease;
}

.page-banner h1 {
    font-size: 36px;
    margin-bottom: 10px;
}

.page-banner .breadcrumb {
    font-size: 18px;
    opacity: 0.9;
}

.page-banner .breadcrumb a {
    color: var(--white);
}

.page-banner .breadcrumb a:hover {
    text-decoration: underline;
}

.page-content {
    padding: 60px 0;
}

/* ===== 产品详情页样式 ===== */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.product-gallery .main-image {
    margin-bottom: 15px;
}

.product-gallery .main-image .placeholder-image {
    min-height: 400px;
}

.product-thumbnails {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.product-thumbnails .thumb {
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: 4px;
    overflow: hidden;
}

.product-thumbnails .thumb.active {
    border-color: var(--primary-color);
}

.product-thumbnails .placeholder-image {
    min-height: 80px;
}

.product-thumbnails .placeholder-image i {
    font-size: 20px;
}

.product-specs h1 {
    font-size: 28px;
    color: var(--text-color);
    margin-bottom: 20px;
}

.product-specs .description {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 25px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 25px;
}

.specs-table th,
.specs-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.specs-table th {
    background-color: var(--bg-light);
    font-weight: 500;
    width: 30%;
}

.product-actions {
    display: flex;
    gap: 15px;
}

/* ===== 关于我们页面 ===== */
.about-intro {
    margin-bottom: 60px;
}

.about-intro .content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-intro .text h2 {
    font-size: 28px;
    color: var(--text-color);
    margin-bottom: 20px;
}

.about-intro .text p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 15px;
}

.company-culture {
    background-color: var(--bg-light);
    padding: 60px 0;
    margin-bottom: 60px;
}

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

.culture-item {
    text-align: center;
    padding: 40px 30px;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.culture-item i {
    font-size: 50px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.culture-item h3 {
    font-size: 20px;
    color: var(--text-color);
    margin-bottom: 15px;
}

.culture-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== 新闻详情页 ===== */
.news-detail {
    max-width: 800px;
    margin: 0 auto;
}

.news-detail .news-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.news-detail .news-header h1 {
    font-size: 28px;
    color: var(--text-color);
    margin-bottom: 15px;
    line-height: 1.4;
}

.news-detail .news-meta {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: var(--text-light);
}

.news-detail .news-body {
    line-height: 1.8;
    color: var(--text-color);
}

.news-detail .news-body p {
    margin-bottom: 20px;
    display: block;
    -webkit-line-clamp: unset;
    overflow: visible;
}

.news-detail .news-body img {
    border-radius: 8px;
    margin: 20px 0;
}

/* ===== 联系我们页面 ===== */
.contact-page-info {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.contact-card {
    text-align: center;
    padding: 40px 20px;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.contact-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.contact-card p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 5px;
}

.contact-card p .label {
    display: inline-block;
    width: 45px;
    color: var(--text-color);
}

.contact-card .social-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-card .social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 15px;
    background: #f5f5f5;
    border-radius: 5px;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s;
}

.contact-card .social-links a:hover {
    background: var(--primary-color);
    color: #fff;
}

.contact-card .social-links a i {
    font-size: 16px;
    margin: 0;
}

.map-section {
    margin-bottom: 60px;
}

.map-placeholder {
    height: 400px;
    background-color: var(--bg-light);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #999;
}

.map-placeholder i {
    font-size: 60px;
    margin-bottom: 15px;
}

/* ===== 产品页面额外样式 ===== */
.product-nav-section {
    background-color: var(--white);
    padding: 30px 0;
    border-bottom: 1px solid #eee;
}

.product-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.product-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px 25px;
    background-color: var(--bg-light);
    border-radius: 8px;
    transition: var(--transition);
}

.product-nav-item:hover,
.product-nav-item.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.product-nav-item i {
    font-size: 24px;
    margin-bottom: 8px;
}

.product-nav-item span {
    font-size: 14px;
}

.product-category-section {
    padding: 60px 0;
}

.product-category-section.bg-light {
    background-color: var(--bg-light);
}

.category-header {
    text-align: center;
    margin-bottom: 40px;
}

.category-header h2 {
    font-size: 28px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.category-header p {
    color: var(--text-light);
}

/* ===== 关于我们页面额外样式 ===== */
.about-intro .content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-intro .text h2 {
    font-size: 28px;
    color: var(--text-color);
    margin-bottom: 20px;
}

.about-intro .text p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 15px;
}

/* 发展历程时间线 */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--primary-color);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    position: relative;
    margin-bottom: 40px;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 50%;
}

.timeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 80px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
    font-weight: 700;
    z-index: 1;
}

.timeline-content {
    background-color: var(--white);
    padding: 25px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    max-width: 350px;
    margin-right: 60px;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: 0;
    margin-left: 60px;
}

.timeline-content h3 {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.timeline-content p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* 资质荣誉 */
.certificates-section {
    padding: 60px 0;
    background-color: var(--bg-light);
}

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

.certificate-item .placeholder-image {
    min-height: 200px;
}

/* ===== 新闻页面额外样式 ===== */
.news-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.news-tab {
    padding: 10px 25px;
    background-color: var(--bg-light);
    border: none;
    border-radius: 4px;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
}

.news-tab:hover,
.news-tab.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.news-list-item {
    display: flex;
    gap: 25px;
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-list-item:hover {
    box-shadow: var(--shadow-hover);
}

.news-thumb {
    flex-shrink: 0;
    width: 280px;
}

.news-thumb .placeholder-image {
    min-height: 180px;
    border-radius: 0;
}

.news-info {
    padding: 25px 25px 25px 0;
    flex: 1;
}

.news-category {
    display: inline-block;
    padding: 4px 12px;
    background-color: var(--primary-color);
    color: var(--white);
    font-size: 12px;
    border-radius: 3px;
    margin-bottom: 10px;
}

.news-info h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.news-info h3 a {
    color: var(--text-color);
}

.news-info h3 a:hover {
    color: var(--primary-color);
}

.news-info > p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-info .news-meta {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: #999;
}

.news-info .news-meta i {
    margin-right: 5px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 50px;
}

.page-link {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-width: 40px;
    height: 40px;
    padding: 0 15px;
    background-color: var(--white);
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    color: var(--text-color);
    transition: var(--transition);
}

.page-link:hover,
.page-link.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.page-dots {
    color: var(--text-light);
}

/* ===== 解决方案页面样式 ===== */
.solutions-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
}

.solutions-intro p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
}

.solution-section {
    padding: 80px 0;
}

.solution-section.bg-light {
    background-color: var(--bg-light);
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.solution-content.reverse {
    direction: rtl;
}

.solution-content.reverse > * {
    direction: ltr;
}

.solution-image .placeholder-image {
    min-height: 350px;
}

.solution-info h2 {
    font-size: 28px;
    color: var(--text-color);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.solution-info h2 i {
    color: var(--primary-color);
}

.solution-info > p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 25px;
}

.solution-info h4 {
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 12px;
    margin-top: 20px;
}

.solution-info ul {
    padding-left: 20px;
    margin-bottom: 15px;
}

.solution-info ul li {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
    position: relative;
    padding-left: 15px;
}

.solution-info ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.solution-info .btn {
    margin-top: 20px;
}

/* 定制服务区块 */
.custom-service-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
}

.custom-service-content {
    text-align: center;
    color: var(--white);
}

.custom-service-content h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.custom-service-content p {
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.custom-service-content .btn {
    background-color: var(--white);
    color: var(--primary-color);
}

.custom-service-content .btn:hover {
    background-color: rgba(255,255,255,0.9);
}

/* ===== 联系页面额外样式 ===== */
.contact-form-section {
    margin-top: 60px;
}

.contact-form-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.contact-form-full .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.contact-form-full label {
    display: block;
    font-size: 14px;
    color: var(--text-color);
    margin-bottom: 8px;
}

.contact-form-full select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 15px;
    font-family: inherit;
    background-color: var(--white);
    transition: var(--transition);
}

.contact-form-full select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-submit {
    text-align: center;
    margin-top: 30px;
}

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
    .product-nav {
        gap: 10px;
    }
    
    .product-nav-item {
        padding: 12px 15px;
    }
    
    .product-nav-item i {
        font-size: 20px;
    }
    
    .product-nav-item span {
        font-size: 12px;
    }
    
    .about-intro .content {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 80px;
        padding-right: 0;
        justify-content: flex-start;
    }
    
    .timeline-year {
        left: 30px;
        width: 60px;
        height: 60px;
        font-size: 14px;
    }
    
    .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 0;
        margin-right: 0;
        max-width: 100%;
    }
    
    .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-list-item {
        flex-direction: column;
    }
    
    .news-thumb {
        width: 100%;
    }
    
    .news-info {
        padding: 20px;
    }
    
    .solution-content,
    .solution-content.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }
    
    .contact-form-full .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .product-nav-item {
        flex: 1 1 calc(33.333% - 10px);
        min-width: 90px;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .news-tabs {
        gap: 5px;
    }
    
    .news-tab {
        padding: 8px 15px;
        font-size: 13px;
    }
}


/* ===== 定制流程区域 - 现代科技感设计 ===== */
.process-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #0a1628 0%, #1a2d4a 50%, #0d1f3c 100%);
    position: relative;
    overflow: hidden;
}

.process-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 150, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.process-section .section-header.light h2 {
    color: #fff;
}

.process-section .section-header.light p {
    color: rgba(255, 255, 255, 0.6);
}

.process-section .section-header {
    margin-bottom: 30px;
}

.process-timeline {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 30px 0 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    top: 65px;
    left: 5%;
    right: 5%;
    height: 2px;
    background: linear-gradient(90deg, 
        rgba(0, 212, 255, 0.3) 0%, 
        rgba(0, 150, 255, 0.8) 50%, 
        rgba(0, 212, 255, 0.3) 100%);
    z-index: 1;
}

.timeline-line::before {
    content: '';
    position: absolute;
    top: -2px;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(0, 212, 255, 0.5) 50%, 
        transparent 100%);
    filter: blur(3px);
}

.process-step {
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.process-step::before {
    display: none;
}

.step-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 10px 5px;
    transition: all 0.4s ease;
}

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

.step-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #0a1628 0%, #1a3a5c 100%);
    border: 2px solid rgba(0, 212, 255, 0.5);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 22px;
    color: #00d4ff;
    position: relative;
    box-shadow: 
        0 0 15px rgba(0, 212, 255, 0.3),
        inset 0 0 15px rgba(0, 212, 255, 0.1);
    transition: all 0.4s ease;
}

.step-icon::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.2);
    animation: pulse-ring 2s ease-out infinite;
}

@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.3);
        opacity: 0;
    }
}

.step-card:hover .step-icon {
    border-color: #00d4ff;
    box-shadow: 
        0 0 25px rgba(0, 212, 255, 0.6),
        inset 0 0 25px rgba(0, 212, 255, 0.2);
    transform: scale(1.05);
}

.step-content {
    margin-top: 12px;
}

.step-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
    letter-spacing: 1px;
}

.step-content p {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.4;
    max-width: 100px;
}

/* 连接线动画效果 */
.process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 45px;
    right: -15%;
    width: 30%;
    height: 2px;
    background: linear-gradient(90deg, #00d4ff, transparent);
    opacity: 0.5;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .process-timeline {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
    
    .timeline-line {
        display: none;
    }
    
    .process-step {
        flex: 0 0 calc(25% - 20px);
    }
    
    .process-step:not(:last-child)::after {
        display: none;
    }
}

@media (max-width: 768px) {
    .process-section {
        padding: 40px 0;
    }
    
    .process-timeline {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 20px 15px;
    }
    
    .process-step {
        flex: none;
        flex-direction: row;
        align-items: center;
        padding: 10px 0;
        border-left: 2px solid rgba(0, 212, 255, 0.3);
        margin-left: 25px;
    }
    
    .process-step::before {
        position: absolute;
        top: 50%;
        left: -35px;
        transform: translateY(-50%);
    }
    
    .step-card {
        flex-direction: row;
        text-align: left;
        padding: 8px 15px;
        background: rgba(255, 255, 255, 0.03);
        border-radius: 8px;
        border: 1px solid rgba(0, 212, 255, 0.1);
        width: 100%;
    }
    
    .step-card:hover {
        transform: translateX(5px);
        background: rgba(0, 212, 255, 0.05);
    }
    
    .step-icon {
        width: 44px;
        height: 44px;
        font-size: 18px;
        flex-shrink: 0;
    }
    
    .step-content {
        margin-top: 0;
        margin-left: 12px;
    }
    
    .step-content h4 {
        font-size: 13px;
    }
    
    .step-content p {
        max-width: none;
        font-size: 11px;
    }
}


/* ===== 公司理念区域 - 简洁科技感设计 ===== */
.philosophy-section {
    position: relative;
    padding: 20px 0;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-light) 100%);
    overflow: hidden;
}

.philosophy-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 40%);
}

.philosophy-content {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.philosophy-left {
    flex: 1.2;
}

.philosophy-brand {
    display: flex;
    align-items: center;
    gap: 15px;
}

.brand-name {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 3px;
    white-space: nowrap;
}

.brand-slogan {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 1px;
    padding-left: 15px;
    border-left: 2px solid rgba(255, 255, 255, 0.4);
}

.philosophy-center {
    flex-shrink: 0;
}

.stat-highlight {
    display: flex;
    align-items: baseline;
    gap: 6px;
    padding: 0 25px;
    border-left: 1px solid rgba(255, 255, 255, 0.3);
    border-right: 1px solid rgba(255, 255, 255, 0.3);
}

.stat-num {
    font-size: 42px;
    font-weight: 700;
    color: #ffd700;
    line-height: 1;
}

.stat-highlight sup {
    font-size: 20px;
    color: #ffd700;
    margin-left: -3px;
}

.stat-text {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.3;
}

.philosophy-right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.value-tags {
    display: flex;
    gap: 10px;
}

.value-tags .tag {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.value-tags .tag i {
    color: #ffd700;
    font-size: 12px;
}

.value-tags .tag:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

@media (max-width: 1024px) {
    .philosophy-content {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .philosophy-left,
    .philosophy-right {
        flex: none;
        width: 100%;
        justify-content: center;
    }
    
    .philosophy-brand {
        justify-content: center;
    }
    
    .stat-highlight {
        border: none;
        padding: 0;
    }
}

@media (max-width: 768px) {
    .philosophy-section {
        padding: 15px 0;
    }
    
    .philosophy-brand {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    
    .brand-name {
        font-size: 20px;
    }
    
    .brand-slogan {
        border-left: none;
        padding-left: 0;
        font-size: 13px;
    }
    
    .stat-num {
        font-size: 32px;
    }
    
    .stat-text {
        font-size: 11px;
    }
    
    .value-tags {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .value-tags .tag {
        padding: 5px 12px;
        font-size: 12px;
    }
}


/* ===== 地图容器样式 ===== */
.map-container {
    width: 100%;
    height: 400px;
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--bg-light);
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

@media (max-width: 768px) {
    .map-container {
        height: 300px;
    }
}


/* ===== 发展历程样式 ===== */
.history-section {
    padding: 80px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
}

.history-section .section-header h2 {
    color: #1a5276;
    font-size: 32px;
}

.history-section .section-header p {
    color: #7f8c8d;
}

.history-timeline-wrapper {
    position: relative;
    margin-top: 50px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.history-timeline {
    width: 100%;
}

/* 表格整体 */
.history-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.history-row {
    transition: all 0.3s ease;
}

.history-row:hover {
    background: rgba(26, 82, 118, 0.03);
}

/* 年份列 */
.history-year-cell {
    width: 110px;
    padding: 20px 0;
    text-align: right;
    vertical-align: top;
    padding-right: 20px;
}

.history-year-badge {
    display: inline-block;
    background: linear-gradient(135deg, #1a5276, #2980b9);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 20px;
    letter-spacing: 1px;
    white-space: nowrap;
}

.history-row:hover .history-year-badge {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(26, 82, 118, 0.3);
}

/* 中间圆点列 */
.history-dot-cell {
    width: 30px;
    position: relative;
    vertical-align: top;
    padding-top: 22px;
}

/* 竖线用 border 实现 */
.history-dot-cell::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: #d5e1ea;
    transform: translateX(-50%);
}

.history-row:first-child .history-dot-cell::before {
    top: 25px;
}

.history-row:last-child .history-dot-cell::before {
    bottom: calc(100% - 30px);
}

.history-dot {
    display: block;
    width: 12px;
    height: 12px;
    background: #fff;
    border: 3px solid #1a5276;
    border-radius: 50%;
    position: relative;
    z-index: 2;
    margin: 0 auto;
    transition: all 0.3s ease;
}

.history-row:hover .history-dot {
    background: #1a5276;
    transform: scale(1.3);
    box-shadow: 0 0 0 4px rgba(26, 82, 118, 0.15);
}

/* 内容列 */
.history-detail-cell {
    padding: 16px 0 16px 20px;
    vertical-align: top;
    border-bottom: 1px solid rgba(0,0,0,0.04);
}

.history-row:last-child .history-detail-cell {
    border-bottom: none;
}

.history-title {
    font-size: 17px;
    color: #2c3e50;
    font-weight: 600;
    margin-bottom: 6px;
    line-height: 1.4;
}

.history-desc {
    font-size: 14px;
    color: #7f8c8d;
    line-height: 1.7;
}

.history-row:hover .history-title {
    color: #1a5276;
}

@media (max-width: 768px) {
    .history-year-cell { width: 80px; padding-right: 12px; }
    .history-year-badge { font-size: 12px; padding: 4px 10px; }
    .history-detail-cell { padding-left: 12px; }
    .history-title { font-size: 15px; }
    .history-desc { font-size: 13px; }
}

/* 年份样式 */
.history-timeline .timeline-year {
    font-size: 16px;
    font-weight: 700;
    color: #1a5276;
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 2px solid #e8eef3;
}

/* 标题样式 */
.history-timeline .timeline-title {
    font-size: 14px;
    color: #333;
    font-weight: 600;
    margin-bottom: 5px;
    line-height: 1.4;
}

/* 描述样式 */
.history-timeline .timeline-desc {
    font-size: 12px;
    color: #666;
    line-height: 1.5;
}

/* 导航箭头 */
.history-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: #fff;
    border: 2px solid #1a5276;
    border-radius: 50%;
    color: #1a5276;
    font-size: 16px;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.history-nav:hover {
    background: #1a5276;
    color: #fff;
    transform: translateY(-50%) scale(1.1);
}

.history-nav.prev { left: 10px; }
.history-nav.next { right: 10px; }

.history-more {
    text-align: center;
    margin-top: 30px;
}

.history-more .btn-outline {
    border-color: #1a5276;
    color: #1a5276;
    padding: 12px 30px;
}

.history-more .btn-outline:hover {
    background: #1a5276;
    color: #fff;
}

/* 响应式 */
@media (max-width: 768px) {
    .history-timeline-wrapper {
        padding: 0 40px;
    }
    
    .history-timeline .timeline-item {
        flex: 0 0 150px;
    }
    
    .history-timeline .timeline-content {
        width: 130px;
        padding: 12px;
    }
    
    .history-timeline .timeline-year {
        font-size: 14px;
    }
    
    .history-timeline .timeline-title {
        font-size: 12px;
    }
    
    .history-timeline .timeline-desc {
        font-size: 11px;
    }
}

/* ===== 资质荣誉样式 ===== */
.certificates-section {
    padding: 80px 0;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.certificate-item {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.certificate-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.certificate-item .placeholder-image {
    height: 150px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border-radius: 8px;
}

.certificate-item .placeholder-image i {
    font-size: 48px;
    color: #2980b9;
    margin-bottom: 10px;
}

.certificate-item .placeholder-image span {
    color: #666;
    font-size: 14px;
}

.certificate-item img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    border-radius: 8px;
}

.certificates-more {
    text-align: center;
    margin-top: 40px;
}

/* 联系页面社交媒体样式 */
.contact-card .social-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
}

.contact-card .social-links a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #2980b9;
    text-decoration: none;
    padding: 8px 15px;
    background: #f0f7fc;
    border-radius: 20px;
    transition: all 0.3s;
}

.contact-card .social-links a:hover {
    background: #2980b9;
    color: #fff;
}

.contact-card .social-links a i {
    font-size: 18px;
}


/* ===== 联系页面响应式 ===== */
@media (max-width: 992px) {
    .contact-page-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .contact-page-info {
        grid-template-columns: 1fr;
    }
}


/* ===== 产品图片自适应样式 ===== */
/* 产品卡片图片容器 - 固定高度，图片居中完整显示 */
.product-card .product-image {
    width: 100%;
    height: 220px;
    padding: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border-radius: 8px 8px 0 0;
    overflow: hidden;
}

.product-card .product-image img {
    max-width: 100%;
    max-height: 190px;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

.product-card:hover .product-image img {
    transform: scale(1.02);
    transition: transform 0.3s;
}

.product-item .product-thumb {
    width: 100%;
    min-height: 150px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border-radius: 8px 8px 0 0;
}

.product-item .product-thumb img {
    max-width: 100%;
    max-height: 300px;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: transform 0.3s;
}

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

/* 产品详情页大图 */
.product-detail-image {
    width: 100%;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border-radius: 12px;
    overflow: hidden;
}

.product-detail-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* 产品缩略图列表 */
.product-thumbnails {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.product-thumbnails .thumb {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    overflow: hidden;
    transition: border-color 0.3s;
}

.product-thumbnails .thumb:hover,
.product-thumbnails .thumb.active {
    border-color: #2980b9;
}

.product-thumbnails .thumb img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* 证书图片 */
.certificate-item img {
    max-width: 100%;
    max-height: 150px;
    object-fit: contain;
}

/* 新闻图片 */
.news-card .news-image,
.news-item .news-thumb {
    width: 100%;
    height: 180px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
}

.news-card .news-image img,
.news-item .news-thumb img {
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
}

/* ===== 图片放大查看弹窗 ===== */
.image-lightbox {
    display: none;
    position: fixed;
    z-index: 10001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
    cursor: zoom-out;
}

.image-lightbox.show {
    display: flex;
}

.image-lightbox img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 10px 50px rgba(0,0,0,0.5);
    animation: lightboxZoomIn 0.3s ease;
}

@keyframes lightboxZoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.image-lightbox .lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #fff;
    cursor: pointer;
    transition: color 0.3s;
    z-index: 10002;
}

.image-lightbox .lightbox-close:hover {
    color: #f39c12;
}

.image-lightbox .lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 50px;
    color: #fff;
    cursor: pointer;
    padding: 20px;
    transition: color 0.3s;
    user-select: none;
}

.image-lightbox .lightbox-nav:hover {
    color: #f39c12;
}

.image-lightbox .lightbox-prev {
    left: 20px;
}

.image-lightbox .lightbox-next {
    right: 20px;
}

.image-lightbox .lightbox-caption {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 16px;
    text-align: center;
    max-width: 80%;
    background: rgba(0,0,0,0.5);
    padding: 10px 20px;
    border-radius: 20px;
}

/* 可点击放大的图片标识 */
.zoomable {
    cursor: zoom-in;
    position: relative;
}

.zoomable img,
img.zoomable-img,
.product-image.has-image img,
.certificate-item img,
.news-image img {
    cursor: zoom-in !important;
}

.zoomable::after {
    content: '\f00e';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.zoomable:hover::after,
.product-image.has-image:hover::after {
    opacity: 1;
}

.product-image.has-image {
    position: relative;
}

.product-image.has-image::after {
    content: '\f00e';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}


/* ===== 产品卡片轮播样式 ===== */
.product-carousel {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-carousel img {
    max-width: 100%;
    max-height: 190px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.product-carousel .carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    border: none;
    border-radius: 50%;
    background: rgba(0,0,0,0.5);
    color: #fff;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.3s;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-carousel .carousel-btn.prev { left: 5px; }
.product-carousel .carousel-btn.next { right: 5px; }

.product-card:hover .carousel-btn {
    opacity: 1;
}

.product-carousel .carousel-btn:hover {
    background: rgba(0,0,0,0.8);
}

.product-carousel .carousel-dots {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 5px;
    z-index: 5;
}

.product-carousel .carousel-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: background 0.3s;
}

.product-carousel .carousel-dots .dot.active {
    background: #fff;
}

.product-carousel .carousel-dots .dot:hover {
    background: rgba(255,255,255,0.8);
}


/* ===== 产品详情页轮播样式 ===== */
.product-main-image {
    position: relative;
}

.detail-carousel {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-carousel img {
    max-width: 100%;
    max-height: 100%;
    width: 100%;
    height: 100%;
    object-fit: contain;
    cursor: zoom-in;
}

.detail-carousel .carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: rgba(0,0,0,0.5);
    color: #fff;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 5;
}

.detail-carousel .carousel-btn.prev { left: 10px; }
.detail-carousel .carousel-btn.next { right: 10px; }

.detail-carousel .carousel-btn:hover {
    background: rgba(0,0,0,0.8);
}

.detail-thumbnails {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.detail-thumbnails .thumb {
    width: 70px;
    height: 70px;
    border: 2px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.3s;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-thumbnails .thumb:hover,
.detail-thumbnails .thumb.active {
    border-color: #1a5276;
}

.detail-thumbnails .thumb img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* ===== 公司图片滚动展示 ===== */
.gallery-section {
    padding: 60px 0 0;
    overflow: hidden;
}

.gallery-track-wrapper {
    overflow: hidden;
    width: 100%;
    margin-top: 30px;
    cursor: grab;
}

.gallery-track-wrapper:active {
    cursor: grabbing;
}

.gallery-track {
    display: flex;
    gap: 12px;
    width: max-content;
    animation: galleryScroll 30s linear infinite;
}

.gallery-track:hover {
    animation-play-state: paused;
}

.gallery-item {
    flex-shrink: 0;
    width: 380px;
    height: 260px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
    display: block;
}

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

.gallery-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #e8f0fe, #c5d8f6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #5a8fd4;
    font-size: 14px;
    gap: 10px;
}

.gallery-placeholder i {
    font-size: 36px;
    opacity: 0.6;
}

@keyframes galleryScroll {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@media (max-width: 768px) {
    .gallery-item {
        width: 260px;
        height: 180px;
    }
}

/* ===== 合作伙伴滚动展示 ===== */
.partners-track-wrapper {
    overflow: hidden;
    width: 100%;
    margin-top: 30px;
    padding: 10px 0 30px;
}

.partners-track {
    display: flex;
    align-items: center;
    gap: 20px;
    width: max-content;
    animation: partnersScroll 25s linear infinite;
}

.partners-track:hover {
    animation-play-state: paused;
}

.partner-item {
    flex-shrink: 0;
    width: 180px;
    height: 80px;
    border: 1px solid #e8edf2;
    border-radius: 8px;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    box-sizing: border-box;
    transition: box-shadow 0.3s, border-color 0.3s;
}

.partner-item:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    border-color: #c5d8f6;
}

.partner-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(30%);
    transition: filter 0.3s;
}

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

.partner-placeholder {
    font-size: 13px;
    color: #999;
    text-align: center;
}

@keyframes partnersScroll {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ===== 移动端增强适配 ===== */

/* 顶部信息栏优化 */
@media (max-width: 768px) {
    .top-bar {
        padding: 6px 0;
    }

    .top-bar .container {
        align-items: center;
        gap: 4px;
    }

    .top-info {
        display: none; /* 手机上隐藏电话/邮箱，节省空间 */
    }

    .top-links {
        width: 100%;
        justify-content: center;
        gap: 15px;
    }

    /* 导航栏 */
    .header {
        padding: 10px 0;
    }

    .logo a h1 {
        font-size: 20px;
    }

    .logo a span {
        font-size: 11px;
    }

    /* Banner */
    .banner {
        height: 280px;
    }

    .banner-content {
        padding: 0 15px;
    }

    .banner-content h2 {
        font-size: 22px;
        margin-bottom: 8px;
    }

    .banner-content p {
        font-size: 13px;
        margin-bottom: 15px;
    }

    .banner-content .btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    .banner-arrow {
        display: none; /* 手机上隐藏箭头，用滑动代替 */
    }

    /* 区块间距缩小 */
    .section-header {
        margin-bottom: 25px;
    }

    .section-header h2 {
        font-size: 22px;
    }

    .section-header p {
        font-size: 13px;
    }

    /* 产品卡片 */
    .product-card {
        margin-bottom: 0;
    }

    /* 联系表单 */
    .contact-info,
    .contact-form {
        padding: 20px 15px;
    }

    /* 页面Banner */
    .page-banner {
        height: 160px;
    }

    .page-banner h1 {
        font-size: 22px;
    }

    /* 产品详情页 */
    .product-detail {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .product-gallery .main-image .placeholder-image {
        min-height: 260px;
    }

    .product-specs h1 {
        font-size: 20px;
    }

    .product-actions {
        flex-direction: column;
    }

    .product-actions .btn {
        width: 100%;
        text-align: center;
    }

    /* 关于我们 */
    .about-intro .content {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .culture-grid {
        grid-template-columns: 1fr;
    }

    /* 新闻列表 */
    .news-item {
        flex-direction: column;
    }

    .news-item .news-image {
        width: 100%;
        height: 180px;
    }

    /* 通用间距 */
    .page-content {
        padding: 30px 0;
    }

    section {
        padding: 40px 0;
    }
}

@media (max-width: 480px) {
    .banner {
        height: 220px;
    }

    .banner-content h2 {
        font-size: 18px;
    }

    .banner-content p {
        display: none;
    }

    .section-header h2 {
        font-size: 20px;
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .about-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .contact-info,
    .contact-form {
        padding: 15px;
    }

    .page-banner {
        height: 130px;
    }

    .page-banner h1 {
        font-size: 18px;
    }

    /* 表单输入框触摸友好 */
    input, textarea, select {
        font-size: 16px !important; /* 防止iOS自动缩放 */
    }

    /* 按钮触摸区域 */
    .btn {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* 导航链接触摸区域 */
    .nav-menu > li > a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
}

/* Banner触摸滑动支持 */
.banner {
    touch-action: pan-y;
}