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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: absolute;
    top: 0;
    width: 100%;
    background: transparent;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

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

.logo-image {
    height: 40px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
}

.logo-graphic {
    width: 24px;
    height: 24px;
    background: white;
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    transform: rotate(45deg);
}

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

.logo-text h2 {
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    margin: 0;
    line-height: 1.2;
}

.logo-pinyin {
    color: #cbd5e1;
    font-size: 0.6rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
    flex: 1;
    justify-content: center;
}

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

.nav-link:hover,
.nav-link.active {
    color: #fbbf24;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ef4444;
    transition: width 0.3s ease;
}

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

/* 搜索图标已移除 */

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

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

/* 首页横幅 - 严格按照设计稿 */
.hero {
    position: relative;
    padding: 0;
    background: none;
    min-height: auto;
    display: block;
}

.hero-container {
    position: relative;
    max-width: none;
    margin: 0;
    padding: 0;
    display: block;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
    color: white;
}

.hero-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.3;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: 0;
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-indicator {
    position: absolute;
    top: -15px;
    right: -25px;
    width: 6px;
    height: 6px;
    background: #3b82f6;
    border-radius: 50%;
}

.hero-image {
    width: 100%;
    display: block;
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 0;
    box-shadow: none;
}

/* 导航栏分割线 */
.nav-divider {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 0;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #2563eb;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-outline:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-2px);
}

/* 产品介绍 - 严格按照设计稿 */
.product-intro {
    padding: 60px 0;
    background: #f8fafc;
}

.product-intro-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: stretch;
}

/* 左侧产品介绍 */
.product-intro-left {
    padding: 40px;
    padding-right: 40px;
    display: flex;
    flex-direction: column;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.product-intro-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.quote-icon {
    font-size: 3rem;
    color: #f97316;
    font-weight: bold;
    margin-right: 15px;
    line-height: 1;
}

.product-intro-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
}

.product-intro-desc {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 40px;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
    flex: 1;
}

.product-feature {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    position: relative;
}

.feature-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #e2e8f0;
    line-height: 1;
    min-width: 60px;
}

.feature-content {
    flex: 1;
}

.feature-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 8px;
}

.feature-content h3:first-child {
    color: #f97316;
}

.feature-content p {
    font-size: 1rem;
    color: #64748b;
    line-height: 1.6;
    margin: 0;
}

.feature-arrow {
    font-size: 1.5rem;
    color: #f97316;
    font-weight: bold;
    margin-left: 10px;
}

/* 右侧图片和CTA */
.product-intro-right {
    position: relative;
    height: 100%;
    margin-top: 0;
    width: 115%;
    margin-left: -7.5%;
}

.product-image {
    position: relative;
    width: 100%;
    height: 100%;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 10px;
}

.cta-box {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background: #8b4513;
    color: white;
    padding: 20px;
    border-radius: 8px;
    z-index: 10;
}

.cta-box h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.cta-box p {
    font-size: 0.8rem;
    opacity: 0.8;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cta-link {
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    display: block;
    text-align: right;
}

.cta-link:hover {
    text-decoration: underline;
}

/* 解决方案 - 严格按照设计稿 */
.solutions {
    padding: 80px 0;
    background: white;
}

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

.solutions-header {
    text-align: center;
    margin-bottom: 60px;
}

.solutions-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 15px;
    position: relative;
}

.solutions-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #ef4444;
}

.solutions-desc {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
    white-space: nowrap;
}

.solutions-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: none;
    margin: 0;
    padding: 0;
}

.solution-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.solution-image {
    width: 100%;
    height: 250px;
    position: relative;
    overflow: hidden;
}

.solution-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 0;
}

.solution-content {
    padding: 30px;
    text-align: center;
}

.solution-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 20px;
}

.solution-btn {
    display: inline-block;
    background: #ef4444;
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.3s ease;
}

.solution-btn:hover {
    background: #dc2626;
}

/* 产品展示 - 已移除，严格按照设计稿 */

/* 页脚 */
.footer {
    background: #374151;
    color: white;
    padding: 40px 0 20px;
}

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

.footer-left {
    flex: 1;
}

.company-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: white;
}

.phone-number {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: white;
}

.addresses {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.address {
    font-size: 0.9rem;
    color: #d1d5db;
    line-height: 1.4;
    margin: 0;
}

.footer-right {
    text-align: right;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.copyright {
    font-size: 0.9rem;
    color: #d1d5db;
    margin: 0;
}

.icp {
    font-size: 0.8rem;
    color: #9ca3af;
    margin: 0;
}

/* 页面标题 */
.page-header {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 产品页面样式 */
.product-nav {
    background: #f8fafc;
    padding: 2rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.product-nav-tabs {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.nav-tab {
    padding: 12px 24px;
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-tab:hover,
.nav-tab.active {
    background: #ef4444;
    color: white;
}

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

.product-section:nth-child(even) {
    background: #f8fafc;
}

.product-detail-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 3rem;
}

.product-detail-image {
    width: 100%;
    height: 400px;
    overflow: hidden;
}

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

.product-detail-content {
    padding: 3rem;
}

.product-detail-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #1e293b;
}

.product-detail-content p {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.product-features {
    margin-bottom: 2rem;
}

.product-features h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

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

.product-features ul li {
    padding: 0.5rem 0;
    color: #64748b;
    position: relative;
    padding-left: 1.5rem;
}

.product-features ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #2563eb;
    font-weight: bold;
}

.product-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.product-images img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
}

/* 解决方案页面样式 */
.solution-nav {
    background: #f8fafc;
    padding: 2rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.solution-nav-tabs {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

/* 删除重复的solution-section定义 */

.solution-detail-header {
    text-align: center;
    margin-bottom: 4rem;
}

.solution-detail-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1e293b;
    position: relative;
}

.solution-detail-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #ef4444;
}

.solution-detail-header p {
    font-size: 1.2rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

.solution-overview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.solution-overview-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.solution-overview-content h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #ef4444;
}

.solution-overview-content p {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.solution-features {
    display: grid;
    gap: 1.5rem;
}

.feature-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.feature-item p {
    color: #64748b;
    line-height: 1.6;
}

.solution-scenarios {
    margin-bottom: 4rem;
}

.solution-scenarios h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #1e293b;
    text-align: center;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.scenario-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.scenario-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.scenario-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.scenario-card h4 {
    padding: 1.5rem 1.5rem 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e293b;
}

.scenario-card p {
    padding: 0 1.5rem 1.5rem;
    color: #64748b;
    line-height: 1.6;
}

.solution-workflow {
    margin-bottom: 4rem;
}

.solution-workflow h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #1e293b;
    text-align: center;
}

.workflow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.workflow-step {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.step-number {
    width: 60px;
    height: 60px;
    background: #2563eb;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.workflow-step h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.workflow-step p {
    color: #64748b;
    line-height: 1.6;
}

.solution-benefits {
    margin-bottom: 4rem;
}

.solution-benefits h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #1e293b;
    text-align: center;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.benefit-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.benefit-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.benefit-item h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

.benefit-item p {
    color: #64748b;
    line-height: 1.6;
}

/* 关于我们页面样式 */
.about-intro {
    padding: 80px 0;
    background: #f8fafc;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #1e293b;
}

.about-text p {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.company-culture {
    padding: 80px 0;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.culture-item {
    background: white;
    padding: 3rem 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.culture-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.culture-icon h3 {
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
}

.culture-item h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

.culture-item p {
    color: #64748b;
    line-height: 1.6;
}

.technology-advantages {
    padding: 80px 0;
    background: #f8fafc;
}

.tech-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.tech-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #1e293b;
}

.tech-text p {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.tech-features {
    display: grid;
    gap: 1.5rem;
}

.tech-feature h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.tech-feature p {
    color: #64748b;
    line-height: 1.6;
}

.tech-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.company-history {
    padding: 80px 0;
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e2e8f0;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    background: #2563eb;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1.1rem;
    position: relative;
    z-index: 2;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin: 0 2rem;
    flex: 1;
}

.timeline-content h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.timeline-content p {
    color: #64748b;
    line-height: 1.6;
}

.contact-us {
    padding: 80px 0;
    background: #f8fafc;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #1e293b;
}

.contact-info p {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.contact-details {
    display: grid;
    gap: 1.5rem;
}

.contact-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.contact-item p {
    color: #64748b;
    line-height: 1.6;
}

.contact-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* 解决方案页面头部 - 参考首页布局 */
.solutions-hero {
    position: relative;
    height: 500px;
    overflow: hidden;
}

.solutions-hero-container {
    position: relative;
    height: 100%;
}

.solutions-hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
    color: white;
}

.solutions-hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.3;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.solutions-hero-subtitle {
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: 0;
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.solutions-hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.solutions-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 解决方案导航标签 - 放在图片上方 */
.solutions-nav-tabs {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 20px;
    z-index: 15;
}

.solutions-nav-tabs .nav-tab {
    background: rgba(255, 255, 255, 0.9);
    color: #374151;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.solutions-nav-tabs .nav-tab:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.solutions-nav-tabs .nav-tab.active {
    background: #ef4444;
    color: white;
}

/* 产品页面样式 - 复用解决方案的hero样式 */
.products-hero {
    position: relative;
    height: 500px;
    overflow: hidden;
}

.products-hero-container {
    position: relative;
    height: 100%;
}

.products-hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
    color: white;
}

.products-hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.3;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.products-hero-subtitle {
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: 0;
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.products-hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.products-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.3s ease-in-out;
}

.products-nav-tabs {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 15;
}

.products-nav-tabs .nav-tab {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: pointer;
}

.products-nav-tabs .nav-tab:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.products-nav-tabs .nav-tab.active {
    background: #ef4444;
    color: white;
}

.products-content {
    padding: 60px 0;
    background: #f8fafc;
}

.product-section {
    display: none;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.product-section.active {
    display: block;
}

/* 关于我们页面样式 - 复用产品页面的hero样式 */
.about-hero {
    position: relative;
    height: 500px;
    overflow: hidden;
}

.about-hero-container {
    position: relative;
    height: 100%;
}

.about-hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
    color: white;
}

.about-hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.3;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.about-hero-subtitle {
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: 0;
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.about-hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.about-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 产品特征样式 */
.feature-category {
    margin-bottom: 1.5rem;
}

.feature-category h5 {
    color: #ef4444;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.feature-category h5::before {
    content: "●";
    color: #ef4444;
    font-size: 0.8rem;
}

.feature-category p {
    color: #4b5563;
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
    padding-left: 16px;
}

/* 产品概述样式 */
.product-overview {
    margin-bottom: 30px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 10px;
    border-left: 4px solid #ef4444;
}

.product-overview h4 {
    color: #ef4444;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.product-overview h4::before {
    content: "📋";
    font-size: 1rem;
}

.product-overview p {
    color: #4b5563;
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
}

/* 水质分析产品特殊布局 */
.water-quality-layout {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    margin-top: 20px;
}

.water-quality-layout .product-features {
    flex: 1;
    margin: 0;
}

.product-images-right {
    flex: 0 0 300px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.product-images-right img {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    background: white;
    padding: 15px;
}

/* 解决方案内容区域 */
.solutions-content {
    padding: 60px 0;
    background: #f8fafc;
}

.solution-section {
    display: none;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.solution-section.active {
    display: block;
}

/* 解决方案签名捺印部分 */
.solution-signature {
    margin: 60px 0;
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.solution-signature-content h3 {
    color: #ef4444;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
}

.solution-signature-content h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 60px;
    height: 3px;
    background: #ef4444;
}

.solution-signature-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #4b5563;
    margin: 0;
}

/* 电子笔录解决方案主要内容布局 */
.solution-main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 智能审讯系统部分 */
.solution-system-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.system-content h3 {
    color: #ef4444;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
}

.system-content h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 80px;
    height: 4px;
    background: #ef4444;
}

.system-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #4b5563;
    margin: 0;
}

.system-image {
    text-align: center;
}

.system-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* 签名捺印部分 */
.solution-signature-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.signature-content h3 {
    color: #ef4444;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
}

.signature-content h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 80px;
    height: 4px;
    background: #ef4444;
}

.signature-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #4b5563;
    margin: 0;
}

.signature-image {
    text-align: center;
}

.signature-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* 音视频管理解决方案样式 */

/* 适用场景部分 */
.applicable-scenarios {
    margin-bottom: 80px;
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.quote-icon {
    color: #ef4444;
    font-size: 3rem;
    font-weight: bold;
    margin-right: 20px;
    line-height: 1;
}

.section-header h2 {
    color: #1f2937;
    font-size: 2.2rem;
    font-weight: 700;
    margin: 0;
}

.scenario-card-item {
    background: #f8fafc;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.scenario-card-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.scenario-card-item img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
}

.scenario-card-item h3 {
    color: #1f2937;
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

/* 核心需求部分 */
.core-requirements {
    margin-bottom: 80px;
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.requirements-grid {
    display: grid;
    gap: 30px;
}

.requirement-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 30px;
    background: #f8fafc;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.requirement-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.requirement-number {
    background: #ef4444;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    flex-shrink: 0;
}

.requirement-content h3 {
    color: #1f2937;
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.requirement-content p {
    color: #6b7280;
    line-height: 1.7;
    margin: 0;
}

.arrow-icon {
    color: #ef4444;
    font-size: 1.5rem;
    font-weight: bold;
    margin-left: auto;
    flex-shrink: 0;
}

/* 解决痛点部分 */
.pain-points-solved {
    margin-bottom: 80px;
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.pain-points-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.pain-points-text p {
    color: #6b7280;
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.pain-points-text p:last-child {
    margin-bottom: 0;
}

/* 音视频快速标注部分 */
.quick-annotation {
    margin-bottom: 80px;
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.annotation-text p {
    color: #6b7280;
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.annotation-text p:last-child {
    margin-bottom: 0;
}

.annotation-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* 音视频智能服务部分 */
.intelligent-services {
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.services-grid {
    display: grid;
    gap: 30px;
}

.service-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 30px;
    background: #f8fafc;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service-arrow {
    color: #ef4444;
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
    margin-top: 5px;
}

.service-details h3 {
    color: #1f2937;
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.service-details p {
    color: #6b7280;
    line-height: 1.7;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(0, 0, 0, 0.9);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.2);
        padding: 2rem 0;
        justify-content: flex-start;
    }

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

    .logo-image {
        height: 32px;
        max-width: 150px;
    }

    .hero-container {
        display: block;
    }

    .hero-title {
        font-size: 1.6rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .about-content,
    .tech-content,
    .contact-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .product-intro-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-intro-left {
        padding: 30px;
        padding-right: 30px;
    }

    .product-intro-right {
        width: 100%;
        margin-left: 0;
        height: 400px;
        margin-top: 0;
    }

    .quote-icon {
        font-size: 2.5rem;
    }

    .product-intro-header h2 {
        font-size: 1.8rem;
    }

    .feature-number {
        font-size: 2rem;
        min-width: 50px;
    }

    .feature-content h3 {
        font-size: 1.2rem;
    }

    .solutions-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .solutions-title {
        font-size: 1.8rem;
    }

    .solutions-desc {
        font-size: 1rem;
        white-space: normal;
        max-width: 600px;
    }

    .solution-content {
        padding: 25px;
    }

    .solution-content h3 {
        font-size: 1.2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .product-nav-tabs,
    .solution-nav-tabs {
        flex-direction: column;
        align-items: center;
    }

    .solution-overview {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 30px;
    }

    .solution-detail-header h2 {
        font-size: 1.8rem;
    }

    .solution-detail-header p {
        font-size: 1rem;
    }

    .solution-overview {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: row !important;
    }

    .timeline-content {
        margin-left: 3rem;
        margin-right: 0;
    }

    .product-detail-content {
        padding: 2rem;
    }

    .product-images {
        grid-template-columns: 1fr;
    }

    .solutions-hero {
        height: 400px;
    }
    
    .solutions-hero-title {
        font-size: 2rem;
    }
    
    .solutions-hero-subtitle {
        font-size: 1rem;
    }

    .products-hero {
        height: 400px;
    }

    .products-hero-title {
        font-size: 2rem;
    }

    .products-hero-subtitle {
        font-size: 1rem;
    }

    .products-nav-tabs {
        bottom: 20px;
        flex-direction: column;
        gap: 10px;
        width: 90%;
        left: 50%;
        transform: translateX(-50%);
    }

    .products-nav-tabs .nav-tab {
        padding: 10px 20px;
        font-size: 0.85rem;
    }

    .about-hero {
        height: 400px;
    }

    .about-hero-title {
        font-size: 2rem;
    }

    .about-hero-subtitle {
        font-size: 1rem;
    }

    /* 水质分析产品响应式设计 */
    .water-quality-layout {
        flex-direction: column;
        gap: 25px;
    }

    .product-images-right {
        flex: none;
        width: 100%;
        align-items: center;
    }

    .product-images-right img {
        max-width: 250px;
        max-height: 300px;
    }

    /* 产品概述响应式 */
    .product-overview {
        padding: 15px;
        margin-bottom: 20px;
    }

    .product-overview h4 {
        font-size: 1.1rem;
    }
    
    .solutions-nav-tabs {
        bottom: 30px;
        gap: 15px;
    }
    
    .solutions-nav-tabs .nav-tab {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .solution-signature {
        padding: 30px;
        margin: 40px 0;
    }
    
    .solution-signature-content h3 {
        font-size: 1.6rem;
    }
    
    .solution-signature-content p {
        font-size: 1rem;
    }

    .solution-system-section,
    .solution-signature-section {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 40px;
        margin-bottom: 60px;
    }
    
    .system-content h3,
    .signature-content h3 {
        font-size: 1.8rem;
    }
    
    .system-content p,
    .signature-content p {
        font-size: 1rem;
    }

    .applicable-scenarios,
    .core-requirements,
    .pain-points-solved,
    .quick-annotation,
    .intelligent-services {
        padding: 40px;
        margin-bottom: 60px;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .pain-points-content,
    .annotation-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .requirement-card,
    .service-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .arrow-icon {
        margin-left: 0;
    }
}

@media (max-width: 480px) {
    .logo-image {
        height: 28px;
        max-width: 120px;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .about-text h2,
    .tech-text h2,
    .contact-info h2 {
        font-size: 2rem;
    }

    .product-detail-content h3 {
        font-size: 1.5rem;
    }

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

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .product-intro {
        padding: 40px 0;
    }

    .product-intro-left {
        padding: 20px;
        padding-right: 20px;
    }

    .product-intro-container {
        gap: 30px;
    }

    .product-intro-right {
        height: 300px;
        margin-top: 0;
    }

    .solutions {
        padding: 60px 0;
    }

    .solutions-title {
        font-size: 1.6rem;
    }

    .solutions-desc {
        font-size: 0.9rem;
    }

    .solution-image {
        height: 200px;
    }

    .solution-content {
        padding: 20px;
    }

    .solution-content h3 {
        font-size: 1.1rem;
    }

    /* 删除重复的solution-section定义 */

    .solution-overview {
        padding: 20px;
    }

    .solution-detail-header h2 {
        font-size: 1.6rem;
    }

    .solution-detail-header p {
        font-size: 0.9rem;
    }

    .solution-overview-content h3 {
        font-size: 1.5rem;
    }

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

    .footer-container {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }

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

    .company-name {
        font-size: 1.1rem;
    }

    .phone-number {
        font-size: 1rem;
    }

    .address {
        font-size: 0.85rem;
    }

    .quote-icon {
        font-size: 2rem;
    }

    .product-intro-header h2 {
        font-size: 1.5rem;
    }

    .product-intro-desc {
        font-size: 1rem;
    }

    .feature-number {
        font-size: 1.8rem;
        min-width: 40px;
    }

    .feature-content h3 {
        font-size: 1.1rem;
    }

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

    .footer {
        padding: 30px 0 15px;
    }

    .footer-container {
        gap: 20px;
    }

    .company-name {
        font-size: 1rem;
    }

    .phone-number {
        font-size: 0.9rem;
    }

    .address {
        font-size: 0.8rem;
    }

    .copyright {
        font-size: 0.8rem;
    }

    .icp {
        font-size: 0.7rem;
    }

    .solutions-hero {
        height: 350px;
    }
    
    .solutions-hero-title {
        font-size: 1.8rem;
    }
    
    .solutions-hero-subtitle {
        font-size: 0.9rem;
    }

    .products-hero {
        height: 350px;
    }

    .products-hero-title {
        font-size: 1.6rem;
    }

    .products-hero-subtitle {
        font-size: 0.9rem;
    }

    .about-hero {
        height: 350px;
    }

    .about-hero-title {
        font-size: 1.6rem;
    }

    .about-hero-subtitle {
        font-size: 0.9rem;
    }

    /* 小屏幕水质分析产品样式 */
    .product-images-right img {
        max-width: 200px;
        max-height: 250px;
        padding: 10px;
    }

    .product-overview {
        padding: 12px;
        margin-bottom: 15px;
    }

    .product-overview h4 {
        font-size: 1rem;
    }

    .product-overview p {
        font-size: 0.9rem;
    }
    
    .solutions-nav-tabs {
        bottom: 20px;
        flex-direction: column;
        gap: 10px;
    }
    
    .solutions-nav-tabs .nav-tab {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .solution-signature {
        padding: 20px;
        margin: 30px 0;
    }
    
    .solution-signature-content h3 {
        font-size: 1.4rem;
    }
    
    .solution-signature-content p {
        font-size: 0.95rem;
    }

    .solution-system-section,
    .solution-signature-section {
        padding: 30px;
        margin-bottom: 40px;
    }
    
    .system-content h3,
    .signature-content h3 {
        font-size: 1.6rem;
    }
    
    .system-content p,
    .signature-content p {
        font-size: 0.95rem;
    }

    .applicable-scenarios,
    .core-requirements,
    .pain-points-solved,
    .quick-annotation,
    .intelligent-services {
        padding: 30px;
        margin-bottom: 40px;
    }
    
    .section-header h2 {
        font-size: 1.6rem;
    }
    
    .requirement-content h3,
    .service-details h3 {
        font-size: 1.2rem;
    }
    
    .requirement-content p,
    .service-details p,
    .pain-points-text p,
    .annotation-text p {
        font-size: 1rem;
    }
}