/* Base Styles */
:root {
    --primary-color: #2A2A2A; /* Deep Space Gray */
    --secondary-color: #0066CC; /* Tech Blue */
    --accent-color: #FF6600; /* Warning Orange */
    --highlight-color: #9D4EDD; /* Aurora Purple */
    --light-bg: #E5E5E5; /* Silver Gray */
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Helvetica Neue', 'Source Han Sans CN', sans-serif;
    margin: 0;
    padding: 0;
    color: var(--primary-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Selection Color */
::selection {
    background-color: var(--accent-color);
    color: white;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0055aa;
}

/* Topbar Styles */
.topbar {
    background-color: var(--primary-color);
    color: white;
    padding: 0.8rem 0;
    font-size: 0.9rem;
}

.topbar-welcome {
    display: block;
    padding: 0.5rem 0;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.8);
}
/* 移动端特定样式 */
@media (max-width: 768px) {
    .topbar-welcome { display:none;}
	.mobile { display:none !important;}
	 .topbar-social {
        display: none !important;
    }
	.language-switcher { right:10px !important;}
}

.topbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1450px;
    margin: 0 auto;
    padding: 0 2rem;
}

.topbar-contact {
    display: flex;
    gap: 2rem;
}

.topbar-contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.topbar-contact-item i {
    color: var(--accent-color);
}

.topbar-social {
    display: flex;
    gap: 1rem;
}

.topbar-social a {
    color: white;
    transition: color 0.3s;
}

.topbar-social a:hover {
    color: var(--accent-color);
}



/* Main Navigation Styles */
.main-nav {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1450px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.logo img {
    height: 50px;
}

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

.nav-menu li a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: color 0.3s;
    position: relative;
}

.current-page-item,.current-page-item > a,.current-menu-item,.current-menu-item a {
 color: var(--secondary-color);}
 
.main-nav .current-menu-item a {color: var(--secondary-color);} 
 
.nav-menu li a:hover {
    color: var(--secondary-color);
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--secondary-color);
    transition: width 0.3s;
}

.nav-menu li a:hover::after {
    width: 100%;
}

/* Active navigation item style */
.nav-menu li a.active {
    color: var(--secondary-color);
}

.nav-menu li a.active::after {
    width: 100%;
    background-color: var(--accent-color);
}

.cta-button {
    background-color: var(--accent-color);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: #e05d00;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: white;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        padding: 1rem 0;
        z-index: 999;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        padding: 0.5rem 2rem;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-container {
        padding: 1rem;
        position: relative;
    }
    
    .cta-button {
        display: none;
    }
}

/* Animation for menu toggle */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.nav-menu li {
    animation: fadeIn 0.3s ease forwards;
    opacity: 0;
}

.nav-menu li:nth-child(1) { animation-delay: 0.1s; }
.nav-menu li:nth-child(2) { animation-delay: 0.2s; }
.nav-menu li:nth-child(3) { animation-delay: 0.3s; }
.nav-menu li:nth-child(4) { animation-delay: 0.4s; }
.nav-menu li:nth-child(5) { animation-delay: 0.5s; }

/* Hero Slideshow Styles */
.hero-slideshow {
    position: relative;
    height: 80vh;
    overflow: hidden;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    max-width: 1450px;
    margin: 0 auto;
    padding: 2rem;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    transform: translateY(-50px);
    transition: transform 0.5s ease;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 8px;
    backdrop-filter: blur(5px);
}

.slide.active .slide-content {
    transform: translateY(0);
}

.slide h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.slide p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    max-width: 600px;
}

.slideshow-controls {
    position: absolute;
    bottom: 2rem;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    z-index: 10;
}

.slide-prev, .slide-next {
    background: rgba(255, 255, 255, 0.3);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.slide-prev:hover, .slide-next:hover {
    background: var(--accent-color);
}

.slide-dots {
    display: flex;
    gap: 0.5rem;
}

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

.slide-dot.active {
    background: var(--accent-color);
    transform: scale(1.2);
}

/* Responsive Slideshow */
@media (max-width: 768px) {
    .hero-slideshow {
        height: 60vh;
    }
    
    .slide h1 {
        font-size: 2.5rem;
    }
    
    .slide p {
        font-size: 1.2rem;
    }
}

/* Products Section Base */
.products-section {
    padding: 5rem 0;
    background-color: #f9f9f9;
}

.section-container {
    max-width: 1450px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card a{ text-decoration:none;
   
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.product-image {
    position: relative;
    height: auto;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform 0.5s;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.view-details {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    border: 2px solid white;
    border-radius: 4px;
    transition: all 0.3s;
}

.view-details:hover {
    background: white;
    color: var(--primary-color);
}

.zhijing{ color:var(--accent-color);}
.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
    color: var(--primary-color);
}

.product-info p {
    color: #666;
    margin-bottom: 1.5rem;
}

.product-specs {
    display: flex;
    gap: 1.5rem;
}

.spec-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--secondary-color);
    font-weight: 500;
}

.spec-item i {
    font-size: 1.2rem; color:var(--secondary-color);
}

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

/* Responsive Products Section */
@media (max-width: 992px) {
    .products-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .product-image {
        height: 200px;
    }
}

/* About Section Styles */
.about-section {
    padding: 5rem 0;
    background-color: white;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.about-text {
    flex: 1;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about-details p {
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-features {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.about-features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.about-features i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

/* Responsive About Section */
@media (max-width: 992px) {
    .about-content {
        flex-direction: column;
    }
    
    .about-text, .about-image {
        flex: none;
        width: 100%;
    }
}

/* Advantages Section Styles */
.advantages-section {
    padding: 5rem 0;
    background-color: #f9f9f9;
}

.why-choose-us {
   
}

.why-choose-us h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-align: center;
}

.why-choose-us .subtitle {
    font-size: 1.2rem;
    color: #666;
    text-align: center;
    margin-bottom: 2rem;
}

.why-choose-us .tab-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
      }

.why-choose-us .tab-button {
    padding: 1rem 2rem;
    background: none;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

.why-choose-us .tab-button:hover {
    background: rgba(0, 102, 204, 0.1);
}

.why-choose-us .tab-button.active {
    background: var(--secondary-color);
    color: white;
}

.why-choose-us .tab-content {
    display: none;
   
}

.why-choose-us .tab-content.active {
    display: block;
}

.why-choose-us .content-wrapper {   
    padding: 1rem;
    border-radius: 8px;
}

.why-choose-us .content-wrapper h4 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

.why-choose-us .content-wrapper p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 2rem;
    text-align: center;
}

.counter-section {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.counter-item {
    text-align: center;
    min-width: 150px;
}

.counter-item .counter {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color);
    display: inline-block;
    min-width: 60px;
}

.counter-item span:not(.counter) {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
}

.counter-item p {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-top: 0.5rem;
}

/* Responsive styles */
@media (max-width: 768px) {
    .why-choose-us .tab-buttons {
        flex-direction: column;
    }
    
    .why-choose-us .tab-button {
        width: 100%;
    }
    
    .counter-section {
        gap: 1.5rem;
    }
    
    .counter-item {
        min-width: 120px;
    }
    
    .counter-item .counter {
        font-size: 2.5rem;
    }
}

    max-width: 900px;
    margin: 0 auto 3rem;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    text-align: center;
}

.header-item {
    padding: 1.5rem;
    font-size: 1.2rem;
}

    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    background: white;
    border-bottom: 1px solid #eee;
    transition: all 0.3s;
}

.comparison-row:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(245,245,245,0.9) 100%);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

    padding: 1.5rem;
    font-weight: 600;
    background: #f5f5f5;
    display: flex;
    align-items: center;
}

    padding: 1.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.row-item i {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.row-item .fa-check-circle {
    color: #4CAF50;
}

.row-item .fa-times-circle {
    color: #F44336;
}

.row-item.highlight {
    background: linear-gradient(135deg, rgba(42, 42, 42, 0.05) 0%, rgba(157, 78, 221, 0.05) 100%);
}

    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--highlight-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: all 0.3s;
}

    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, #ffffff 0%, #f9f9f9 100%);
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}
    transform: rotate(10deg) scale(1.1);
    background: linear-gradient(135deg, var(--highlight-color), var(--accent-color));
}

    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--secondary-color), var(--highlight-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

    color: #666;
    line-height: 1.6;
}

/* Responsive Advantages Section */
@media (max-width: 768px) {
    .comparison-header, .comparison-row {
        grid-template-columns: 1.5fr 1fr 1fr;
    }
    
    .header-item, .row-title, .row-item {
        padding: 1rem;
        font-size: 0.9rem;
    }
    
  
}


.applications-section {
    padding: 5rem 0;
    background-color: white;
}

.applications-tabs {
    margin-top: 2rem;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tab-button {
    padding: 0.8rem 1.5rem;
    background: none;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-button:hover {
    background: rgba(0, 102, 204, 0.1);
}

.tab-button.active {
    background: var(--secondary-color);
    color: white;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.application-details {
    display: flex;
    align-items: center;
    gap: 4rem;
    margin-top: 2rem;
	
}

.application-text {
    flex: 1;
}

.application-text h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.application-text p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.application-text ul {
    margin-bottom: 2rem;
    padding-left: 1.5rem;
}

.application-text li {
    margin-bottom: 0.8rem;
}

.application-image {
    flex: 1;
}

.application-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Responsive Applications Section */
@media (max-width: 992px) {
    .application-details {
        flex-direction: column;
    }
    
    .application-text, .application-image {
        flex: none;
        width: 100%;
    }
    
    .tab-buttons {
        justify-content: flex-start;
    }
}

/* News Section Styles */
.news-section {
    padding: 5rem 0;
    background-color: #f9f9f9;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.news-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.news-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform 0.5s;
}

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-date {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-color);
    color: white;
    padding: 0.8rem;
    text-align: center;
    border-radius: 4px;
    line-height: 1;
}

.date-day {
    font-size: 1.8rem;
    font-weight: 700;
    display: block;
}

.date-month {
    font-size: 1rem;
    text-transform: uppercase;
}

.news-content {
    padding: 1.5rem;
}

.news-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.news-content p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.read-more {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s;
}

.read-more:hover {
    color: var(--accent-color);
}

.read-more i {
    transition: transform 0.3s;
}

.read-more:hover i {
    transform: translateX(5px);
}

/* Responsive News Section */
@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .news-image {
        height: 180px;
    }
}

/* Footer Styles */
.main-footer {
    background-color: var(--primary-color);
    color: white;
    padding: 4rem 0 0;
}

.footer-container {
    max-width: 1450px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-column h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.8rem;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--accent-color);
}

.footer-logo img {
    height: 50px;
    margin-bottom: 1.5rem;
}

.footer-logo + p {
    color: rgba(255,255,255,0.7);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.footer-social a:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.3rem;
    line-height: 1.3;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.3s;
    display: block;
    padding: 0.3rem 0;
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.footer-contact {
    list-style: none;
    padding: 0;
}

.footer-contact li {
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.footer-contact i {
    color: var(--accent-color);
    margin-top: 3px;
}

.footer-contact span {
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 1.5rem 0;
    text-align: center;
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
}

/* Responsive Footer */
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .footer-column {
        margin-bottom: 2rem;
    }
    
    .footer-column:first-child,
    .footer-column:last-child {
        width: 100%;
    }
    
    .footer-column:nth-child(2),
    .footer-column:nth-child(3) {
        width: calc(49% - 0.5rem);
        float: left;
        margin-right: 1%;
    }
    
    .footer-column:nth-child(3) {
        margin-right: 0;
        margin-left: 1%;
    }
    
    .footer-column:last-child {
        margin-bottom: 0;
        clear: both;
    }
}

/* Back to Top Button */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: white;
    border: none;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s;
    z-index: 9999;
}

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

#back-to-top i {
    font-size: 1.2rem;
}

/* 语言切换器样式 */
.language-switcher {
    display: flex;
    align-items: center;
    position: relative;
}

.language-btn {
    background: none;
    border: none;
    color: white;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s;
}

.language-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.language-btn i {
    margin-left: 5px;
    font-size: 12px;
    transition: transform 0.3s;
}

.language-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    min-width: 120px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    overflow: hidden;
    z-index: 1100; /* 高于导航菜单的z-index(1000) */
}

.language-dropdown a {
    display: block;
    padding: 8px 15px;
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s;
}

.language-dropdown a:hover {
    background: #f5f5f5;
}

.language-dropdown a.active {
    color: var(--accent-color);
    font-weight: 600;
}

.language-switcher:hover .language-dropdown {
    display: block;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .language-switcher {
        margin-left: auto; /* 确保靠右显示 */
        margin-right: 15px; /* 添加右边距 */
    }
    
    .language-btn {
        padding: 5px;
    }
    
    .language-dropdown {
        right: 15px; /* 保持与按钮对齐 */
    }
}

/* Video Player Styles */
.about-image {
    position: relative;
}

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

.video-poster {
    width: 100%;
    height: auto;
    display: block;
}

.company-video {
    width: 100%;
    height: auto;
    display: none;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: all 0.3s ease;
}

.play-button:hover {
    color: #fff;
    transform: translate(-50%, -50%) scale(1.1);
}

/* 联系英雄区 */
.nei-hero {
    padding: 8rem 2rem;
    text-align: center;
    color: white;
}

.nei-hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.nei-hero h1 span {
    color: var(--secondary-color);
}

.nei-hero p {
    font-size: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.pagination {
    display: inline-block;
    padding-left: 0;
    margin: 20px 0;
    border-radius: 4px; }
.pagination > li {
    display: inline; }
.pagination > li > a,
.pagination > li > span {
    position: relative;
    float: left;
    padding: 6px 12px;
    line-height: 1.42857;
    text-decoration: none;
    color: #337ab7;
    background-color: #fff;
    border: 1px solid #ddd;
    margin-left: -1px; }
.pagination > li:first-child > a,
.pagination > li:first-child > span {
    margin-left: 0;
    border-bottom-left-radius: 4px;
    border-top-left-radius: 4px; }
.pagination > li:last-child > a,
.pagination > li:last-child > span {
    border-bottom-right-radius: 4px;
    border-top-right-radius: 4px; }
.pagination > li > a:hover, .pagination > li > a:focus,
.pagination > li > span:hover,
.pagination > li > span:focus {
    z-index: 2;
    color: #23527c;
    background-color: #eeeeee;
    border-color: #ddd; }
.pagination > .active > a, .pagination > .active > a:hover, .pagination > .active > a:focus,
.pagination > .active > span,
.pagination > .active > span:hover,
.pagination > .active > span:focus {
    z-index: 3;
    color: #fff;
    background-color: #337ab7;
    border-color: #337ab7;
    cursor: default; }
	
/* Partners Section Styles */
.partners-section {
    padding: 60px 0;
    background-color: #f9f9f9;
}

.partners-container {
    width: 100%;
    overflow: hidden;
    position: relative;
    margin-top: 30px;
}

.partners-track {
    display: flex;
    width: 200%;
    animation: scroll 40s linear infinite;
}

.partners-row {
    display: flex;
    width: 50%;
    justify-content: space-around;
    align-items: center;
    padding: 20px 0;
}

.partners-row img {
    height: auto;
    width: 100%;
    max-width: 150px;
    object-fit: contain;
    opacity: 0.7;
    transition: all 0.3s ease;
    margin: 0 15px;
    box-shadow: none;
}

.partners-row img:hover {
    filter: grayscale(0);
    opacity: 1;
}

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

/* Responsive Partners Section */
@media (max-width: 768px) {
    .partners-section {
        padding: 40px 0;
    }
    
    .partners-container {
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .partners-track {
        width: auto;
        display: inline-flex;
        animation: none;
    }
    
    .partners-row {
        width: auto;
        flex-wrap: nowrap;
        gap: 15px;
        padding: 10px 20px;
    }
    
    .partners-row img {
        height: 40px;
        max-width: 80px;
        flex-shrink: 0;
    }
}

/* 统计板块样式 */
.stats-section {
    padding: 60px 0;
    background-color: #f5f7fa;
}

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

.stat-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.stat-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.stat-card h3 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--accent-color);
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 0.3rem;
}

.stat-card .counter {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    transition: all 0.3s;
}

.stat-card .unit {
    font-size: 1.2rem;
    color: #666;
    font-weight: 400;
    transition: all 0.3s;
}

.stat-card:hover .counter,
.stat-card:hover .unit {
    color: white;
}

.stat-card p {
    color: #666;
    font-size: 1.1rem;
}

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

.stat-card:hover i,
.stat-card:hover h3,
.stat-card:hover p {
    color: white;
}

/* 响应式统计板块 */
@media (max-width: 992px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-section {
        padding: 40px 0;
    }
}

/* Responsive Video Styles */
@media (max-width: 768px) {
    .play-button {
        font-size: 3rem;
    }
}

/* Application Details Styles */
.application-details {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}