.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background-color: rgb(239, 241, 249);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all var(--transition-base);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background-color: rgb(239, 241, 249);
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.navbar-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 160px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-logo {
    display: flex;
    align-items: center;
}

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

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-link {
    position: relative;
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: calc(100% - var(--spacing-xl));
}

.dropdown-arrow {
    width: 12px;
    height: 12px;
    margin-left: var(--spacing-xs);
    transition: transform var(--transition-fast);
}

.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
    z-index: 100;
}

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

.nav-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-item {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--primary-lighter);
    color: var(--primary-color);
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 4px;
}

.toggle-bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-base);
}

.hero-carousel {
    position: relative;
    height: 80vh;
    min-height: 500px;
    max-height: 700px;
    margin-top: var(--navbar-height);
    overflow: hidden;
}

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

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

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

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

.carousel-content {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    padding: var(--spacing-2xl) var(--spacing-2xl) var(--spacing-2xl) 15%;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    opacity: 0.95;
}

.hero-desc {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    opacity: 0.85;
}

.carousel-indicators {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.5);
    border: 2px solid transparent;
    transition: all var(--transition-base);
}

.indicator.active {
    background-color: var(--text-light);
    width: 36px;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    z-index: 10;
}

.carousel-arrow:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.carousel-arrow svg {
    width: 24px;
    height: 24px;
}

.carousel-prev {
    left: var(--spacing-xl);
}

.carousel-next {
    right: var(--spacing-xl);
}

.services-section {
    background-color: var(--bg-secondary);
    padding: var(--spacing-4xl) 0;
}

.services-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.service-tab {
    padding: var(--spacing-md) var(--spacing-2xl);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.service-tab.active {
    background-color: var(--primary-color);
    color: var(--text-light);
    border-color: var(--primary-color);
}

.service-tab:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.service-content {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
    padding: var(--spacing-lg) 0;
    min-height: 300px;
}

.service-content.active {
    display: grid;
}

.service-info {
    padding: 0;
}

.service-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.service-desc {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.service-link {
    display: inline-flex;
    align-items: center;
    color: var(--primary-color);
    font-weight: 500;
    transition: all var(--transition-base);
}

.service-link:hover {
    color: var(--primary-dark);
}

.service-link svg {
    margin-left: var(--spacing-xs);
    transition: transform var(--transition-base);
}

.service-link:hover svg {
    transform: translateX(4px);
}

.service-image {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    height: 300px;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

@media (max-width: 992px) {
    .service-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .service-info {
        order: 2;
    }
    
    .service-image {
        order: 1;
    }
}

@media (max-width: 768px) {
    .services-tabs {
        gap: var(--spacing-md);
    }
    
    .service-tab {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
}
.stats-section {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    overflow: hidden;
}

.stats-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("../官网图片/官网数据.png");
    background-size: cover;
    background-position: center;
    opacity: 0.5;
}

.section-header.light {
    position: relative;
    z-index: 2;
}

.stats-grid {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    z-index: 1;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-xl);
}

.stat-number {
    font-size: var(--font-size-6xl);
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: baseline;
    justify-content: center;
}

.counter {
    display: inline-block;
}

.stat-unit {
    font-size: var(--font-size-2xl);
    margin-left: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.8);
}

.features-section {
    background-color: var(--bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-card:hover {
    background-color: var(--bg-secondary);
    transform: translateY(-4px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    color: var(--primary-color);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

.products-section {
    background-color: var(--bg-secondary);
    padding: var(--spacing-4xl) 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.product-card {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    overflow: hidden;
    cursor: pointer;
}

.product-card:hover {
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
    transform: translateY(-4px);
}

.product-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-base);
}

.product-card:hover .product-title {
    color: var(--primary-color);
}

.product-desc {
    margin-bottom: var(--spacing-xl);
}

.product-desc p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-sm);
}

.product-features {
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    text-align: left;
    width: 100%;
}

.product-link {
    display: inline-block;
    color: var(--primary-color);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
    margin-top: var(--spacing-2xl);
    position: relative;
    z-index: 1;
    padding: 6px 12px;
    background-color: var(--bg-primary);
    border: 1px solid var(--primary-color);
    border-radius: var(--radius-md);
}

.product-link:hover {
    color: var(--text-light);
    background-color: var(--primary-color);
}

.product-link svg {
    margin-left: var(--spacing-xs);
    width: 16px;
    height: 16px;
    transition: transform var(--transition-base);
    vertical-align: middle;
}

.product-link:hover svg {
    transform: translateX(4px);
}

.ai-feature-card.active .product-link {
    color: var(--text-light);
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.ai-feature-card.active .product-link:hover {
    color: var(--text-light);
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.ai-feature-card.active .product-link svg {
    color: var(--text-light);
}

.ai-feature-card {
    transition: all var(--transition-base);
    text-align: left;
}

.ai-feature-card .ai-feature-title {
    text-align: center;
}

.ai-feature-card .ai-feature-desc {
    text-align: left;
}

.ai-feature-card .product-link {
    display: block;
    text-align: center;
    margin-top: var(--spacing-lg);
    padding: 6px 12px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.ai-feature-card.active {
    background-color: #EFF1F9;
    border-color: #EFF1F9;
}

.ai-features-grid.two-columns,
.ai-features-grid.ai-features-grid-centered.two-columns {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    max-width: 800px;
    margin: 0 auto;
}

@media (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

.partners-section {
    background-color: var(--bg-secondary);
    overflow: hidden;
}

.service-network-section {
    background-color: var(--bg-primary);
}

.service-network-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: stretch;
}

.service-network-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    justify-content: center;
}

.network-info-item {
    text-align: center;
    padding: var(--spacing-xl);
}

.network-info-number {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.network-info-unit {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--primary-color);
}

.network-info-label {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-primary);
}

.service-network-map {
    width: 100%;
    height: 100%;
    min-height: 400px;
    background: linear-gradient(135deg, var(--primary-lighter) 0%, var(--bg-primary) 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.china-map {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-svg {
    width: 100%;
    height: 100%;
    color: var(--primary-color);
}

.map-dot {
    animation: blink 2s ease-in-out infinite;
}

.map-dot:nth-child(2) {
    animation-delay: 0.3s;
}

.map-dot:nth-child(3) {
    animation-delay: 0.6s;
}

.map-dot:nth-child(4) {
    animation-delay: 0.9s;
}

.map-dot:nth-child(5) {
    animation-delay: 1.2s;
}

.map-dot:nth-child(6) {
    animation-delay: 1.5s;
}

.map-dot:nth-child(7) {
    animation-delay: 1.8s;
}

@keyframes blink {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.3;
        transform: scale(0.8);
    }
}

.partners-carousel {
    position: relative;
    overflow: hidden;
    width: 100%;
}

.partners-track {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: var(--spacing-md);
    width: 200%;
    animation: slideLeft 30s linear infinite;
}

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

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

.partner-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    height: 120px;
}

.partner-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.partner-item img {
    max-width: 180px;
    max-height: 70px;
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: grayscale(0%);
    opacity: 1;
    transition: all var(--transition-base);
}

.partner-item img.large-logo {
    max-width: 220px;
    max-height: 90px;
}

.partner-item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.cta-section {
    background: #EFF1F9;
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.cta-desc {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.footer {
    background-color: #010F37;
    color: var(--text-light);
    padding: var(--spacing-4xl) 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr 1fr;
    gap: var(--spacing-2xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom:1px solid rgba(255,255,255, 0.1);
}

.footer-brand {
    padding-right: var(--spacing-2xl);
}

.footer-logo {
    height: 40px;
    width: auto;
    margin-bottom: var(--spacing-sm);
}

.footer-desc {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
    white-space: nowrap;
}

.footer-contact {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact p {
    margin-bottom: var(--spacing-xs);
}

.footer-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-light);
}

.footer-list li {
    margin-bottom: var(--spacing-sm);
}

.footer-list a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
    white-space: nowrap;
    display: inline-block;
}

.footer-list a:hover {
    color: var(--text-light);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl) 0;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--text-light);
}

.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background-color: var(--primary-color);
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-4px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}