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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.top-bar {
    background-color: #f5f5f5;
    padding: 8px 0;
    border-bottom: 1px solid #e0e0e0;
}

.top-bar-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    font-size: 14px;
    flex-wrap: wrap;
    gap: 10px;
}

.top-bar-left {
    color: #666;
}

.top-bar-right {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.top-bar-right a {
    color: #333;
    text-decoration: none;
}

.top-bar-right a:hover {
    color: #007bff;
}

.weibo-icon {
    width: 18px;
    height: 18px;
    vertical-align: middle;
}

.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 60px;
}

.logo-text {
    display: flex;
    align-items: center;
    font-size: 18px;
    font-weight: bold;
    color: #333;
}

.logo-text sup {
    font-size: 12px;
    color: #333;
}

.logo-subtitle {
    font-size: 14px;
    color: #007bff;
    margin-left: 10px;
    padding-left: 10px;
    border-left: 1px solid #ddd;
}

.nav {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

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

.nav a:hover,
.nav a.active {
    color: #007bff;
}

.banner-container {
    position: relative;
    height: 450px;
    overflow: hidden;
}

.banner {
    display: flex;
    transition: transform 0.5s ease;
}

.banner-item {
    min-width: 100%;
    height: 450px;
}

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

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

.banner-indicator {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: background-color 0.3s;
}

.banner-indicator.active {
    background-color: #007bff;
}

.banner-prev,
.banner-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.5);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s;
}

.banner-prev:hover,
.banner-next:hover {
    background-color: rgba(0, 0, 0, 0.7);
}

.banner-prev {
    left: 20px;
}

.banner-next {
    right: 20px;
}

.section {
    padding: 50px 0;
}

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

.section-title h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 10px;
}

.section-title p {
    color: #666;
    font-size: 14px;
}

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

.about-summary {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.about-summary p {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    text-align: justify;
    margin-bottom: 15px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.product-image {
    height: 200px;
    overflow: hidden;
}

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

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

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

.product-info h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

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

.application-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.application-tag {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: #fff;
    padding: 12px 25px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    transition: transform 0.3s;
}

.application-tag:hover {
    transform: scale(1.05);
}

.faq-section {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.faq-item {
    border-bottom: 1px solid #eee;
    margin-bottom: 15px;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: #333;
    transition: color 0.3s;
}

.faq-question:hover {
    color: #007bff;
}

.faq-question::after {
    content: '+';
    font-size: 24px;
    color: #007bff;
    transition: transform 0.3s;
}

.faq-question.active::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding-bottom: 0;
}

.faq-answer.active {
    max-height: 200px;
    padding-bottom: 20px;
}

.faq-answer p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

.contact-section {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

.contact-item {
    text-align: center;
}

.contact-item h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 20px;
}

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

.contact-item a {
    color: #007bff;
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

.qrcode-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.qrcode-container img {
    width: 150px;
    height: 150px;
    border: 2px solid #eee;
    border-radius: 8px;
}

.qrcode-container span {
    font-size: 14px;
    color: #666;
}

.footer {
    background-color: #333;
    color: #fff;
    padding: 40px 0;
    margin-top: 50px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.footer-content p {
    margin-bottom: 10px;
    font-size: 14px;
    color: #aaa;
}

.footer-content a {
    color: #007bff;
    text-decoration: none;
}

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

.page-title {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

.page-title h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

.page-title p {
    font-size: 14px;
    opacity: 0.9;
}

.about-content {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.about-content h2 {
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #007bff;
}

.about-content p {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
    text-align: justify;
}

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

.product-detail-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.product-detail-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.product-detail-card h3 {
    padding: 20px 20px 10px;
    font-size: 20px;
    color: #333;
}

.product-detail-card p {
    padding: 0 20px 20px;
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.cases-content {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.cases-content h2 {
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #007bff;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.case-item {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s;
}

.case-item:hover {
    transform: translateY(-3px);
}

.case-item i {
    font-size: 36px;
    color: #007bff;
    margin-bottom: 15px;
}

.case-item h3 {
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
}

.case-item p {
    font-size: 13px;
    color: #666;
    line-height: 1.5;
}

.contact-content {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.contact-content h2 {
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #007bff;
}

.douyin-section {
    margin-top: 40px;
}

.douyin-section h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.douyin-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.douyin-item {
    text-align: center;
}

.douyin-item img {
    width: 180px;
    height: 180px;
    border: 2px solid #eee;
    border-radius: 8px;
}

.douyin-item span {
    display: block;
    margin-top: 10px;
    font-size: 14px;
    color: #666;
}

@media (max-width: 768px) {
    .banner-container {
        height: 280px;
    }
    
    .banner-item {
        height: 280px;
    }
    
    .top-bar-content {
        flex-direction: column;
        text-align: center;
    }
    
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav {
        gap: 15px;
        justify-content: center;
    }
    
    .about-summary,
    .faq-section,
    .contact-section,
    .about-content,
    .cases-content,
    .contact-content {
        padding: 20px;
    }
    
    .section {
        padding: 30px 0;
    }
}

@media (max-width: 480px) {
    .banner-container {
        height: 200px;
    }
    
    .banner-item {
        height: 200px;
    }
    
    .logo img {
        height: 45px;
    }
    
    .logo-text {
        font-size: 14px;
    }
    
    .logo-subtitle {
        font-size: 12px;
    }
    
    .nav a {
        font-size: 14px;
    }
}