/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #00d4ff;
}

.nav-logo i {
    margin-right: 10px;
    font-size: 1.8rem;
}

/* Logo图片样式 */
.logo-img {
    height: 40px;
    width: auto;
    margin-right: 10px;
    object-fit: contain;
}

/* 当有logo图片时，隐藏图标 */
.nav-logo .logo-img + i {
    display: none;
}

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

.nav-menu a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #00d4ff;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #00d4ff, #0ea5e9);
    transition: width 0.3s ease;
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: #fff;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主页横幅样式 */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
}

.circuit-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 20%, #00d4ff 2px, transparent 2px),
        radial-gradient(circle at 80% 80%, #0ea5e9 2px, transparent 2px),
        radial-gradient(circle at 40% 60%, #38bdf8 1px, transparent 1px);
    background-size: 100px 100px, 150px 150px, 80px 80px;
    animation: circuitMove 20s linear infinite;
}

@keyframes circuitMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-100px, -100px); }
}

.hero-content {
    text-align: center;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #fff;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, #00d4ff, #0ea5e9, #38bdf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #cbd5e1;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #00d4ff, #0ea5e9);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #00d4ff;
    border: 2px solid #00d4ff;
}

.btn-secondary:hover {
    background: #00d4ff;
    color: #0f172a;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #0ea5e9;
    border: 2px solid #0ea5e9;
    padding: 10px 25px;
}

.btn-outline:hover {
    background: #0ea5e9;
    color: #fff;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    z-index: 2;
}

.stat-item {
    text-align: center;
    color: #fff;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #00d4ff;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: #cbd5e1;
}

/* 通用区块样式 */
section {
    padding: 100px 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1e293b;
}

.section-header p {
    font-size: 1.1rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

/* 产品中心样式 */
.products {
    background: #f8fafc;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.product-card {
    background: #fff;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #00d4ff, #0ea5e9);
}

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

.product-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #00d4ff, #0ea5e9);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.product-icon i {
    font-size: 2rem;
    color: #fff;
}

.product-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

.product-card p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.product-features {
    list-style: none;
    margin-bottom: 2rem;
}

.product-features li {
    padding: 0.5rem 0;
    color: #475569;
    position: relative;
    padding-left: 1.5rem;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #00d4ff;
    font-weight: bold;
}

/* 解决方案样式 */
.solutions {
    background: #1e293b;
    color: #fff;
}

.solutions .section-header h2 {
    color: #fff;
}

.solutions .section-header p {
    color: #cbd5e1;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.solution-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.solution-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.solution-image {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #00d4ff, #0ea5e9);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.solution-image i {
    font-size: 1.5rem;
    color: #fff;
}

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

.solution-content p {
    color: #cbd5e1;
    line-height: 1.6;
}

/* 关于我们样式 */
.about {
    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;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.feature-item i {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #00d4ff, #0ea5e9);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
}

.feature-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

.feature-item p {
    color: #64748b;
    font-size: 0.9rem;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.tech-visualization {
    width: 300px;
    height: 300px;
    position: relative;
}

.tech-circle {
    width: 100%;
    height: 100%;
    border: 3px solid #00d4ff;
    border-radius: 50%;
    position: relative;
    animation: rotate 10s linear infinite;
}

.tech-circle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    border: 2px solid #0ea5e9;
    border-radius: 50%;
    opacity: 0.6;
}

.tech-circle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    border: 1px solid #38bdf8;
    border-radius: 50%;
    opacity: 0.4;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 联系我们样式 */
.contact {
    background: #fff;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #00d4ff, #0ea5e9);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
}

.contact-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

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

.contact-form {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 15px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: #fff;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00d4ff;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚样式 */
.footer {
    background: #0f172a;
    color: #fff;
    padding: 3rem 0 1rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #00d4ff;
    margin-bottom: 1rem;
}

.footer-logo i {
    margin-right: 10px;
    font-size: 1.8rem;
}

/* 页脚logo图片样式 */
.footer-logo .logo-img {
    height: 35px;
    width: auto;
    margin-right: 10px;
    object-fit: contain;
}

/* 当有logo图片时，隐藏页脚图标 */
.footer-logo .logo-img + i {
    display: none;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #fff;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #00d4ff;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #cbd5e1;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #00d4ff;
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
    color: #64748b;
}

.beian-links {
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.beian-link {
    color: #749AE3;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

.beian-link:hover {
    color: #00d4ff;
    text-decoration: underline;
}

.beian-links img {
    width: 16px;
    height: 16px;
    vertical-align: middle;
}

/* 响应式备案信息 */
@media (max-width: 768px) {
    .beian-links {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .beian-link {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .product-card {
        padding: 1.5rem;
    }
    
    .solution-item {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    /* 小屏幕Logo样式 */
    .logo-img {
        height: 30px;
    }
    
    .footer-logo .logo-img {
        height: 25px;
    }
    
    .nav-logo {
        font-size: 1.2rem;
    }
    
    .footer-logo {
        font-size: 1.2rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #00d4ff, #0ea5e9);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}