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

html {
    scroll-behavior: smooth;
}

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

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

.animate-on-scroll {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.scroll-animate {
    opacity: 0;
    transform: translateY(40px);
}

.animate-on-scroll.scroll-animate.animated {
    opacity: 1;
    transform: translateY(0);
}

.animate-fade-in {
    opacity: 1;
    transition: opacity 0.8s ease;
}

.animate-fade-in.scroll-animate {
    opacity: 0;
}

.animate-fade-in.scroll-animate.animated {
    opacity: 1;
}

.animate-slide-left {
    opacity: 1;
    transform: translateX(0);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-slide-left.scroll-animate {
    opacity: 0;
    transform: translateX(-30px);
}

.animate-slide-left.scroll-animate.animated {
    opacity: 1;
    transform: translateX(0);
}

.animate-slide-right {
    opacity: 1;
    transform: translateX(0);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-slide-right.scroll-animate {
    opacity: 0;
    transform: translateX(30px);
}

.animate-slide-right.scroll-animate.animated {
    opacity: 1;
    transform: translateX(0);
}

.animate-scale {
    opacity: 1;
    transform: scale(1);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-scale.scroll-animate {
    opacity: 0;
    transform: scale(0.9);
}

.animate-scale.scroll-animate.animated {
    opacity: 1;
    transform: scale(1);
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: transparent;
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}

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

.logo-img {
    height: 50px;
    width: auto;
}

.logo-slogan {
    font-size: 18px;
    font-weight: 700;
    color: white;
    display: flex;
    align-items: center;
    height: 100%;
}

.navbar.scrolled .logo-slogan {
    color: #333;
}

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

.nav-links a {
    text-decoration: none;
    color: white;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.navbar.scrolled .nav-links a {
    color: #333;
}

.navbar.scrolled .nav-links a:hover {
    color: #007bff;
}

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

.burger div {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

.hero {
    background: linear-gradient(135deg, #007bff 0%, #00c6fb 100%);
    color: white;
    padding: 120px 0 80px;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%);
    animation: float1 15s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -30%;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 40%);
    animation: float2 20s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translateX(0) rotate(0deg); }
    50% { transform: translateX(20px) rotate(5deg); }
}

@keyframes float2 {
    0%, 100% { transform: translateX(0) rotate(0deg); }
    50% { transform: translateX(-30px) rotate(-5deg); }
}

.hero-content {
    max-width: 700px;
}

.hero-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 25px;
    opacity: 0.9;
}

.hero-description {
    font-size: 16px;
    margin-bottom: 30px;
    opacity: 0.95;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.btn-wrapper {
    position: relative;
}

.qrcode-popup {
    position: absolute;
    top: calc(100% + 15px);
    left: 50%;
    transform: translateX(-50%);
    background: white;
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.btn-wrapper:hover .qrcode-popup {
    opacity: 1;
    visibility: visible;
}

.qrcode-popup img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
}

.qrcode-tip {
    margin-top: 10px;
    font-size: 14px;
    color: #666;
    text-align: center;
}

.qrcode-popup::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 10px solid white;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background: white;
    color: #007bff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

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

.btn-secondary:hover {
    background: white;
    color: #007bff;
}

.hero-stats {
    display: flex;
    gap: 60px;
    margin-top: 50px;
}

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

.stat-number {
    font-size: 48px;
    font-weight: 700;
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 120'%3E%3Cpath fill='%23ffffff' d='M0,64L48,69.3C96,75,192,85,288,80C384,75,480,53,576,48C672,43,768,53,864,64C960,75,1056,85,1152,80C1248,75,1344,53,1392,42.7L1440,32L1440,120L1392,120C1344,120,1248,120,1152,120C1056,120,960,120,864,120C768,120,672,120,576,120C480,120,384,120,288,120C192,120,96,120,48,120L0,120Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
}

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

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 16px;
    color: #666;
}

.about {
    padding: 80px 0;
    background: #f8f9fa;
}

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

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

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.feature-item i {
    color: #007bff;
    font-size: 20px;
}

.about-mission {
    background: linear-gradient(135deg, #007bff 0%, #00c6fb 100%);
    padding: 40px;
    border-radius: 15px;
    color: white;
}

.about-mission h3 {
    margin-bottom: 10px;
}

.about-mission h4 {
    margin-bottom: 20px;
    font-weight: 500;
}

.about-mission ul {
    list-style: none;
}

.about-mission li {
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.about-mission li:last-child {
    border-bottom: none;
}

.products {
    padding: 80px 0;
}

.products-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #666;
}

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

.product-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    border: 1px solid #eee;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0,123,255,0.1), transparent);
    transition: left 0.5s ease;
}

.product-card:hover::before {
    left: 100%;
}

.product-card:hover {
    box-shadow: 0 15px 40px rgba(0, 123, 255, 0.15);
    border-color: #007bff;
    transform: translateY(-5px) scale(1.02);
}

.product-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #007bff 0%, #00c6fb 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: white;
    font-size: 24px;
    transition: transform 0.3s ease;
}

.product-card:hover .product-icon {
    transform: scale(1.1) rotate(5deg);
}

.product-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #333;
}

.product-description {
    font-size: 13px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.7;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.product-features span {
    padding: 4px 10px;
    background: linear-gradient(135deg, #e8f4fd 0%, #d4efff 100%);
    color: #007bff;
    border-radius: 15px;
    font-size: 11px;
    font-weight: 500;
}

.product-advantage {
    padding-top: 15px;
    border-top: 1px dashed #eee;
}

.product-advantage h4 {
    font-size: 12px;
    color: #999;
    margin-bottom: 8px;
}

.product-advantage p {
    font-size: 12px;
    color: #666;
}

.advantages {
    padding: 80px 0;
    background: #f8f9fa;
}

.advantages-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #666;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.advantage-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    border-left: 4px solid #007bff;
    background: linear-gradient(135deg, #ffffff 0%, #f8fcff 100%);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.advantage-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,123,255,0.05) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.advantage-item:hover::after {
    opacity: 1;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 123, 255, 0.1);
}

.advantage-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #007bff 0%, #00c6fb 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
    transition: all 0.3s ease;
}

.advantage-item:hover .advantage-icon {
    transform: scale(1.15) rotate(-5deg);
    box-shadow: 0 8px 20px rgba(0, 123, 255, 0.3);
}

.advantage-icon {
    font-size: 22px;
}

.advantage-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #333;
}

.advantage-item p {
    font-size: 13px;
    color: #666;
    line-height: 1.7;
}

.cases {
    padding: 80px 0;
}

.cases-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #666;
}

.cases-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 50px;
}

.case-stat-card {
    text-align: center;
    padding: 30px 50px;
    background: linear-gradient(135deg, #007bff 0%, #00c6fb 100%);
    border-radius: 15px;
    color: white;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.case-stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.5s ease;
}

.case-stat-card:hover::before {
    left: 100%;
}

.case-stat-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 30px rgba(0, 123, 255, 0.3);
}

.case-stat-card .stat-value {
    font-size: 42px;
    font-weight: 700;
    transition: transform 0.3s ease;
}

.case-stat-card:hover .stat-value {
    transform: scale(1.1);
}

.case-stat-card .stat-label {
    font-size: 14px;
    opacity: 0.9;
}

.cases-regions {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.case-region {
    background: white;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #eee;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.case-region::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #007bff, #00c6fb);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.case-region:hover::before {
    transform: scaleX(1);
}

.case-region:hover {
    box-shadow: 0 10px 30px rgba(0, 123, 255, 0.1);
    border-color: #007bff;
    transform: translateY(-3px);
}

.case-region-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px dashed #eee;
}

.case-region-header h4 {
    font-size: 16px;
    font-weight: 600;
    color: #333;
}

.region-count {
    font-size: 13px;
    color: #007bff;
    font-weight: 500;
}

.case-region ul {
    list-style: none;
}

.case-region li {
    padding: 8px 0;
    font-size: 13px;
    color: #555;
    border-bottom: 1px dashed #f0f0f0;
}

.case-region li:last-child {
    border-bottom: none;
}

.cases-other {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 12px;
}

.cases-other h4 {
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: 600;
    color: #333;
}

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

.tag {
    padding: 6px 15px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 20px;
    font-size: 13px;
    color: #555;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0,123,255,0.2), transparent);
    transition: left 0.4s ease;
}

.tag:hover::before {
    left: 100%;
}

.tag:hover {
    background: linear-gradient(135deg, #007bff 0%, #00c6fb 100%);
    color: white;
    border-color: #007bff;
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
}

.contact {
    padding: 80px 0;
    background: #f8f9fa;
}

.contact-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #666;
}

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

.contact-info {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.contact-info h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #333;
}

.contact-info p {
    color: #666;
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-item i {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #007bff 0%, #00c6fb 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    flex-shrink: 0;
}

.contact-item div {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 12px;
    color: #999;
    margin-bottom: 5px;
}

.contact-item a,
.contact-item span {
    font-size: 14px;
    color: #333;
    text-decoration: none;
}

.contact-item a:hover {
    color: #007bff;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.contact-form h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.contact-form p {
    color: #666;
    margin-bottom: 25px;
}

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

.wechat-qrcode img {
    width: 180px;
    height: 180px;
    border-radius: 12px;
    background: white;
    padding: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.qrcode-label {
    font-size: 14px;
    color: #333;
    font-weight: 500;
}

.footer {
    background: #333;
    color: white;
    padding: 50px 0;
}

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

.footer-content p {
    max-width: 800px;
    margin: 0 auto 30px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.footer-copyright {
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .burger {
        display: flex;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .cases-regions {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .logo-slogan {
        display: none;
    }
}