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

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

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.nav-logo-img:hover {
    transform: scale(1.1);
}

.nav-logo h2 {
    color: #2c3e50;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #3498db;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3498db;
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #2c3e50;
    margin: 3px 0;
    transition: 0.3s;
}

/* 轮播图样式 */
.hero-section {
    position: relative;
    height: 100vh;
    overflow: hidden;
    margin-top: 70px;
}

.carousel {
    position: relative;
    height: 100%;
    width: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

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

.carousel-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 2;
    max-width: 600px;
    padding: 20px;
}

.carousel-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.carousel-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.3);
    border: none;
    color: white;
    font-size: 1.5rem;
    padding: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.carousel-btn:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.carousel-btn.prev {
    left: 20px;
}

.carousel-btn.next {
    right: 20px;
}

.carousel-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.dot:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.2);
}

.dot.active {
    background: white;
    border-color: rgba(255, 255, 255, 0.8);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

/* 章节样式 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.1rem;
    color: #7f8c8d;
}

/* 关于我们章节 */
.about-section {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.about-text h3 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 30px;
    color: #555;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.feature {
    text-align: center;
    padding: 20px;
}

.feature i {
    font-size: 2.5rem;
    color: #3498db;
    margin-bottom: 15px;
}

.feature h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #2c3e50;
}

.feature p {
    font-size: 0.9rem;
    color: #7f8c8d;
}

.about-image img {
    width: 100%;
    border-radius: 15px;
    height: 400px;
    object-fit: cover;
    object-position: center;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    transition: box-shadow 0.3s ease;
    transform: translateZ(0);
    backface-visibility: hidden;
    min-height: 400px;
    display: block;
}

.about-image img:hover {
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.18);
}

.about-image {
    min-height: 400px;
    border-radius: 15px;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    transition: box-shadow 0.3s ease;
}

.about-image:hover {
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.18);
}

.image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 400px;
    color: #999;
    text-align: center;
}



/* 服务优势章节 */
.services-section {
    padding: 80px 0;
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    text-align: center;
    padding: 40px 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.service-card p {
    color: #7f8c8d;
    line-height: 1.6;
}

/* 页脚样式 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.footer-logo-img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.footer-logo-img:hover {
    opacity: 1;
}

.footer-logo-text h3 {
    color: #ecf0f1;
    margin: 0 0 5px 0;
    font-size: 1.2rem;
}

.footer-logo-text p {
    color: #bdc3c7;
    margin: 0;
    font-size: 0.9rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: #3498db;
}

.footer-section p {
    margin-bottom: 10px;
    color: #bdc3c7;
}

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

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

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #3498db;
}

.social-links {
    display: flex;
    gap: 20px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.social-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.social-icon {
    width: 35px;
    height: 35px;
    background: #3498db;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.social-icon:hover {
    background: #2980b9;
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.social-name {
    color: #bdc3c7;
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* 页面标题样式 */
.page-header {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 120px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 留言板样式 */
.message-board {
    padding: 60px 0;
    background: #f8f9fa;
}

.message-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.message-form-section {
    order: 1;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    padding: 30px;
    position: sticky;
    top: 20px;
}

.message-list-section {
    order: 2;
}

.message-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 25px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    color: white;
}

.message-list-header h2 {
    margin: 0;
    color: white;
    font-size: 1.5rem;
}

.message-filters {
    min-width: 150px;
}

.message-filters select {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 5px;
    padding: 8px 12px;
    color: #2c3e50;
    font-weight: 500;
}

.message-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
}

.message-card {
    margin-bottom: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
    width: 100%;
}

.message-card .card-body {
    padding: 20px;
    width: 100%;
    box-sizing: border-box;
}

.message-card:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 10px;
}

.message-author {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.author-name {
    font-weight: 600;
    color: #2c3e50;
}

.author-phone {
    font-size: 0.9rem;
    color: #7f8c8d;
    background: #f8f9fa;
    padding: 2px 8px;
    border-radius: 4px;
}

.message-date {
    font-size: 0.9rem;
    color: #7f8c8d;
}

.message-subject {
    font-size: 0.9rem;
    color: #3498db;
}

.message-content {
    line-height: 1.6;
    color: #555;
    padding: 15px 0;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
}

.message-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.9rem;
}

.like-btn, .reply-btn {
    display: flex;
    align-items: center;
    gap: 5px;
}

.message-replies {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e1e8ed;
}

.message-replies h5 {
    font-size: 1rem;
    color: #2c3e50;
    margin-bottom: 10px;
}

.reply-item {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 10px;
}

.reply-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
}

.reply-author {
    font-weight: 600;
    color: #2c3e50;
    font-size: 0.9rem;
}

.reply-date {
    font-size: 0.8rem;
    color: #7f8c8d;
}

.reply-content {
    font-size: 0.9rem;
    color: #555;
    line-height: 1.4;
}

.reply-form {
    margin-top: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 5px;
}

.reply-form h5 {
    margin-bottom: 15px;
    color: #2c3e50;
}

.message-pagination {
    margin-top: 30px;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .carousel-content h1 {
        font-size: 2rem;
    }

    .carousel-content p {
        font-size: 1rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .section-header h2 {
        font-size: 2rem;
    }

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

    .message-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .message-form-section {
        order: 1;
    }

    .message-list-section {
        order: 2;
    }

    .message-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .message-author {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .author-phone {
        font-size: 0.8rem;
        padding: 1px 6px;
    }

    .social-links {
        gap: 15px;
    }

    .social-item {
        gap: 6px;
    }

    .social-icon {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }

    .social-name {
        font-size: 0.8rem;
    }

    .nav-logo-img {
        width: 35px;
        height: 35px;
    }

    .footer-logo-img {
        width: 40px;
        height: 40px;
    }

    .footer-logo {
        gap: 10px;
    }

    .message-list-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .message-filters {
        width: 100%;
    }
}

/* 关于我们页面样式 */
.about-intro {
    padding: 80px 0;
    background: white;
}

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

.about-text h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 30px;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    color: #555;
}

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

.stat-item {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.stat-item h3 {
    font-size: 2.5rem;
    color: #3498db;
    margin-bottom: 10px;
}

.stat-item p {
    color: #7f8c8d;
    font-weight: 500;
}

/* 时间线样式 */
.timeline-section {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #3498db;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 0;
    margin-right: 50%;
    text-align: right;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 50%;
    margin-right: 0;
}

.timeline-content {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 50%;
    width: 20px;
    height: 20px;
    background: #3498db;
    border-radius: 50%;
    transform: translateY(-50%);
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -60px;
}

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

.timeline-content h3 {
    color: #3498db;
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.timeline-content h4 {
    color: #2c3e50;
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.timeline-content p {
    color: #555;
    line-height: 1.6;
}

/* 企业文化样式 */
.culture-section {
    padding: 80px 0;
    background: white;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.culture-card {
    text-align: center;
    padding: 40px 30px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.culture-card:hover {
    transform: translateY(-10px);
}

.culture-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.culture-icon i {
    font-size: 2rem;
    color: white;
}

.culture-card h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.culture-card p {
    color: #7f8c8d;
    line-height: 1.6;
}

/* 团队样式 */
.team-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.team-member {
    text-align: center;
    background: white;
    padding: 30px 20px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
}

.member-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 4px solid #3498db;
}

.member-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-member h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 10px;
}

.member-title {
    color: #3498db;
    font-weight: 600;
    margin-bottom: 15px;
}

.member-desc {
    color: #7f8c8d;
    line-height: 1.6;
    font-size: 0.9rem;
}

/* 响应式设计补充 */
@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .company-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 50px;
        margin-right: 0;
        text-align: left;
    }
    
    .timeline-item:nth-child(odd) .timeline-content::before,
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -40px;
        right: auto;
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

/* 产品服务页面样式 */
.services-categories {
    padding: 80px 0;
    background: white;
}

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

.category-card {
    background: white;
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.category-card:hover {
    transform: translateY(-10px);
}

.category-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.category-icon i {
    font-size: 2rem;
    color: white;
}

.category-card h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 15px;
    text-align: center;
}

.category-card p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 20px;
    text-align: center;
}

.category-card ul {
    list-style: none;
    padding: 0;
}

.category-card ul li {
    padding: 8px 0;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.category-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
}

/* 产品展示样式 */
.products-showcase {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.product-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.product-image {
    height: 250px;
    overflow: hidden;
}

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

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

.product-content {
    padding: 25px;
}

.product-content h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.product-content p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 20px;
}

.product-features {
    margin-bottom: 20px;
}

.product-features .tag {
    margin-right: 8px;
    margin-bottom: 8px;
}

/* 技术优势样式 */
.tech-advantages {
    padding: 80px 0;
    background: white;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.advantage-icon i {
    font-size: 2rem;
    color: white;
}

.advantage-item h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.advantage-item p {
    color: #7f8c8d;
    line-height: 1.6;
}

/* 合作流程样式 */
.cooperation-process {
    padding: 80px 0;
    background: #f8f9fa;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 50px;
    right: 50px;
    height: 2px;
    background: #3498db;
    z-index: 1;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 2;
    flex: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    background: #3498db;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step-content h3 {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-bottom: 10px;
}

.step-content p {
    color: #7f8c8d;
    line-height: 1.6;
    font-size: 0.9rem;
}

/* 产品详情模态框样式 */
.product-detail-content {
    max-height: 60vh;
    overflow-y: auto;
}

.product-detail-content h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.product-description,
.product-features,
.product-specifications,
.product-applications {
    margin-bottom: 25px;
}

.product-features ul {
    list-style: none;
    padding: 0;
}

.product-features ul li {
    padding: 8px 0;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.product-features ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
}

.applications-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.modal-footer {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    padding-top: 20px;
    border-top: 1px solid #e1e8ed;
}

/* 响应式设计补充 */
@media (max-width: 768px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
        gap: 30px;
    }
    
    .process-steps::before {
        display: none;
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.2rem;
    }
}

/* 联系我们页面样式 */
.contact-info {
    padding: 60px 0;
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.contact-card {
    text-align: center;
    padding: 30px 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.contact-icon i {
    font-size: 2rem;
    color: white;
}

.contact-card h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.contact-card p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 5px;
}

/* 联系表单样式 */
.contact-form-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-form-wrapper {
    order: 1;
}

.contact-details {
    order: 2;
}

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

.company-info,
.business-hours,
.social-media {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.company-info h3,
.business-hours h3,
.social-media h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
}

.info-item i {
    color: #3498db;
    font-size: 1.2rem;
    margin-right: 15px;
    margin-top: 5px;
}

.info-item h4 {
    color: #2c3e50;
    margin-bottom: 5px;
    font-size: 1rem;
}

.info-item p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 3px;
}

.hours-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #e1e8ed;
}

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

.hours-item span:first-child {
    color: #2c3e50;
    font-weight: 500;
}

.hours-item span:last-child {
    color: #7f8c8d;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-social-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.social-link {
    display: flex;
    align-items: center;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    text-decoration: none;
    color: #2c3e50;
    transition: background 0.3s ease;
}

.social-link:hover {
    background: #e9ecef;
}

.social-link i {
    font-size: 1.5rem;
    margin-right: 15px;
    color: #3498db;
}

.social-link span {
    font-weight: 500;
}

/* 地图区域样式 */
.map-section {
    padding: 60px 0;
    background: white;
}

.map-container {
    max-width: 800px;
    margin: 0 auto;
    height: 400px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.map-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #7f8c8d;
    cursor: pointer;
    transition: background 0.3s ease;
}

.map-placeholder:hover {
    background: linear-gradient(135deg, #e9ecef, #dee2e6);
}

.map-placeholder i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #3498db;
}

.map-placeholder p {
    margin: 5px 0;
    text-align: center;
}

/* 响应式设计补充 */
@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form-wrapper {
        order: 2;
    }
    
    .contact-details {
        order: 1;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .carousel-content h1 {
        font-size: 1.5rem;
    }

    .carousel-content p {
        font-size: 0.9rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}