:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #7c3aed;
    --accent: #06b6d4;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --white: #ffffff;
    --bg-light: #f8fafc;
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --gradient-dark: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    letter-spacing: 2px;
    margin-bottom: 12px;
    padding: 6px 16px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 20px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

.section-header-light .section-tag {
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent);
}

.section-header-light .section-title {
    color: var(--white);
}

.section-header-light .section-subtitle {
    color: var(--gray-light);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

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

.logo img {
    width: 48px;
    height: 48px;
    border-radius: 12px;
}

.logo span {
    font-size: 22px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: 40px;
}

.nav a {
    font-size: 16px;
    font-weight: 500;
    color: var(--dark);
    padding: 8px 0;
    position: relative;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

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

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.lang-switch {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(37, 99, 235, 0.1);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-switch:hover {
    background: rgba(37, 99, 235, 0.2);
    transform: translateY(-1px);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--dark);
}

.hero-bg {
    position: absolute;
    inset: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
}

.hero-gradient::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 40%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 1; }
    50% { transform: scale(1.1) rotate(5deg); opacity: 0.8; }
}

.hero-particles {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
        radial-gradient(2px 2px at 50px 160px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 90px 40px, rgba(255,255,255,0.2), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 160px 120px, rgba(255,255,255,0.2), transparent);
    background-size: 200px 200px;
    animation: particles 20s linear infinite;
}

@keyframes particles {
    0% { transform: translateY(0); }
    100% { transform: translateY(-200px); }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 120px 0 80px;
}

.hero-title {
    margin-bottom: 24px;
}

.hero-title-small {
    display: block;
    font-size: 20px;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 4px;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero-title-large {
    display: block;
    font-size: 56px;
    font-weight: 900;
    color: var(--white);
    line-height: 1.2;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-desc {
    font-size: 20px;
    color: var(--gray-light);
    max-width: 700px;
    margin: 0 auto 40px;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--gray-light);
    font-size: 14px;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--gray-light);
    border-bottom: 2px solid var(--gray-light);
    transform: rotate(45deg);
}

.about {
    padding: 120px 0;
    background: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 60px;
    align-items: center;
}

.about-text p {
    font-size: 17px;
    color: var(--gray);
    line-height: 1.9;
    margin-bottom: 20px;
}

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

.about-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 900;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 16px;
}

.feature-info h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.feature-info p {
    font-size: 14px;
    color: var(--gray);
}

.products {
    padding: 120px 0;
    background: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    padding: 0;
    background: var(--white);
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
    z-index: 2;
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.product-icon {
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #eff6ff 0%, #f5f3ff 100%);
    transition: all 0.3s ease;
    flex-shrink: 0;
    overflow: hidden;
}

.product-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s ease;
}

.product-card:hover .product-icon {
    background: linear-gradient(135deg, #dbeafe 0%, #ddd6fe 100%);
}

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

.product-card-content {
    padding: 24px 30px 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.product-card p {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-bottom: 24px;
}

.product-features span {
    padding: 6px 14px;
    font-size: 13px;
    color: var(--primary);
    background: rgba(37, 99, 235, 0.1);
    border-radius: 20px;
    font-weight: 500;
}

.product-link {
    display: inline-block;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    transition: all 0.3s ease;
}

.product-link:hover {
    color: var(--secondary);
    transform: translateX(5px);
}

.tech {
    padding: 120px 0;
    background: var(--bg-light);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.tech-card {
    padding: 40px 30px;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-secondary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tech-card:hover::before {
    transform: scaleX(1);
}

.tech-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.tech-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f0fdf4 0%, #fef3c7 100%);
    border-radius: 20px;
    color: var(--secondary);
    font-size: 32px;
    transition: all 0.3s ease;
}

.tech-icon svg {
    width: 40px;
    height: 40px;
    stroke: currentColor;
    fill: none;
}

.tech-card:hover .tech-icon {
    background: linear-gradient(135deg, #059669 0%, #d97706 100%);
    color: white;
    transform: scale(1.1);
}

.tech-card:hover .tech-icon svg {
    stroke: white;
}

.solutions {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.solution-card {
    background: white;
    border-radius: 16px;
    padding: 24px;
    text-align: left;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border-top: 4px solid transparent;
}

.solution-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-top-color: var(--primary);
}

.solution-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.solution-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #e0e7ff 0%, #fef3c7 100%);
    border-radius: 12px;
    color: var(--secondary);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.solution-icon svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    fill: none;
}

.solution-card:hover .solution-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    transform: scale(1.1);
}

.solution-card:hover .solution-icon svg {
    stroke: white;
}

.solution-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin: 0;
}

.solution-card p {
    font-size: 14px;
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 12px;
}

.solution-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 8px;
}

.solution-tags .tag {
    font-size: 12px;
    padding: 4px 12px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: var(--primary);
    border-radius: 20px;
    font-weight: 500;
}

.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    position: relative;
    overflow: hidden;
}

.tech-card p {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.tech-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0;
    margin: 0;
    list-style: none;
}

.tech-features li {
    padding: 6px 14px;
    font-size: 13px;
    color: var(--secondary);
    background: rgba(16, 185, 129, 0.1);
    border-radius: 20px;
    font-weight: 500;
}

.contact {
    padding: 120px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.contact::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -150px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.contact-content {
    position: relative;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
}

.contact-icon svg {
    width: 32px;
    height: 32px;
    color: var(--white);
}

.contact-text h4 {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 4px;
}

.contact-text p {
    font-size: 15px;
    color: var(--gray-light);
}

.contact-qr {
    display: flex;
    gap: 40px;
}

.qr-code {
    text-align: center;
}

.qr-code img {
    width: 160px;
    height: 160px;
    padding: 16px;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.qr-code span {
    display: block;
    margin-top: 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
}

.footer {
    padding: 40px 0;
    background: var(--dark);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

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

.footer-logo img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
}

.footer-logo span {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    font-size: 15px;
    color: var(--gray-light);
}

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

.footer-copyright p {
    font-size: 14px;
    color: var(--gray);
}

.footer-beian {
    font-size: 12px !important;
    margin-top: 8px;
    color: #475569 !important;
    word-break: break-all;
    text-align: center;
}

@media (max-width: 1024px) {
    .hero-title-large {
        font-size: 42px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-features {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .feature-item {
        flex: 1;
        min-width: 280px;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
    }
    
    .nav.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-title-large {
        font-size: 32px;
    }
    
    .hero-desc {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        flex-direction: column;
    }
    
    .contact-qr {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-title-large {
        font-size: 28px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 15px;
    }
    
    .product-card,
    .news-card {
        padding: 24px 20px;
    }
    
    .qr-code img {
        width: 140px;
        height: 140px;
    }
}