/* 重置样式和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    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;
    gap: 10px;
}

.logo {
    width: 40px;
    height: 40px;
    /*background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);*/
    border-radius: 8px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #333;
}

.nav-menu {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #667eea;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #667eea;
}

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

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

/* 首页轮播 */
.hero {
    margin-top: 70px;
    min-height: 100vh;
    background: url('img/banner.png') no-repeat center center;
    background-size: cover;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    padding: 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 40px;
    line-height: 1.5;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}





/* 产品页 */
.products {
    padding: 80px 0;
    background: #f8fafc;
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 60px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
}

.product-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.product-title {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.product-description {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.6;
}

.product-features {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.feature {
    background: #f1f5f9;
    color: #475569;
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.product-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.product-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

/* 其他页面样式 */
.solutions,
.developer,
.cases,
.about {
    padding: 80px 0;
}

.solutions {
    background: white;
}

.developer {
    background: #f8fafc;
}

.cases {
    background: white;
}

.about {
    background: #f8fafc;
}

.solutions-grid,
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.solution-card,
.case-card {
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.solution-card:hover,
.case-card:hover {
    transform: translateY(-5px);
}

.solution-card h3,
.case-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.developer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.developer-resources,
.developer-community {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.developer-resources h3,
.developer-community h3 {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
}

.developer-resources ul,
.developer-community ul {
    list-style: none;
}

.developer-resources li,
.developer-community li {
    padding: 10px 0;
    border-bottom: 1px solid #f1f5f9;
    color: #666;
}

.about-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-content p {
    font-size: 18px;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 36px;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 10px;
}

.stat p {
    color: #666;
    font-weight: 500;
}

/* 页脚 */
.footer {
    background: #1a202c;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-section p,
.footer-section a {
    color: #a0aec0;
    text-decoration: none;
    margin-bottom: 10px;
    display: block;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #667eea;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: inline-block;
    margin-bottom: 0;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #2d3748;
    color: #a0aec0;
}

/* 移动端适配 (默认) */
@media (max-width: 767px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    

    .products-grid,
    .solutions-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .developer-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

/* 平板端适配 */
@media (min-width: 768px) and (max-width: 1023px) {
    .nav-container {
        padding: 0 30px;
    }
    
    .container {
        padding: 0 30px;
    }
    

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solutions-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 桌面端适配 */
@media (min-width: 1024px) {

    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solutions-grid,
    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 性能优化 */

.product-card,
.solution-card,
.case-card {
    will-change: transform;
}

/* 减少重绘 */
.nav-link::after {
    will-change: width;
}

/* 硬件加速 */
.product-btn {
    transform: translateZ(0);
}

/* 图片懒加载优化 */
img {
    loading: lazy;
}

/* 字体优化 */
@font-face {
    font-family: 'Inter';
    font-display: swap;
}

.footer-bottom span {
    margin: 0 10px;
}

.footer-bottom a {
    color: #a0aec0;
}