/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
    scroll-behavior: smooth;
}

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-white {
    background-color: #fff;
    color: #1890ff;
    border-color: #1890ff;
}

.btn-white:hover {
    background-color: #e6f7ff;
}

.btn-blue {
    background-color: #1890ff;
    color: #fff;
    border-color: #1890ff;
}

.btn-blue:hover {
    background-color: #40a9ff;
}

.btn-large {
    padding: 12px 32px;
    font-size: 16px;
}

/* 头部样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo img {
    height: 32px;
}

.nav ul {
    display: flex;
    list-style: none;
}

.nav li {
    margin: 0 16px;
}

.nav a {
    color: #333;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: #1890ff;
}

.header-actions .btn {
    margin-left: 12px;
}

/* 英雄区域 */
.hero {
    background-color: #e6f7ff;
    padding: 120px 0 80px;
    margin-top: 64px;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-content {
    max-width: 500px;
}

.hero-content h1 {
    font-size: 48px;
    font-weight: 600;
    color: #333;
    margin-bottom: 24px;
    line-height: 1.3;
}

.hero-content p {
    font-size: 18px;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons .btn {
    margin-right: 16px;
}

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

/* 产品功能 */
.features {
    padding: 80px 0;
    background-color: #fff;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    font-weight: 600;
    color: #333;
    margin-bottom: 16px;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
    background-color: #fafafa;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.feature-icon {
    margin-bottom: 24px;
}

.feature-icon img {
    width: 80px;
    height: 80px;
}

.feature-icon svg {
    width: 160px;
    height: 160px;
}

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

.feature-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 客户案例 */
.cases {
    padding: 80px 0;
    background-color: #f5f7fa;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.case-item {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.case-item:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transform: translateY(-4px);
}

.case-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.case-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin: 20px;
}

.case-item p {
    font-size: 14px;
    color: #666;
    margin: 0 20px 20px;
    line-height: 1.6;
}

/* 下载区域 */
.download {
    padding: 80px 0;
    background-color: #1890ff;
    color: #fff;
    text-align: center;
}

.download-content h2 {
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 16px;
}

.download-content p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.download-buttons .btn {
    margin: 0 12px;
    border: 1px solid #0078d4;
}

/* 页脚 */
.footer {
    background-color: #001529;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-info .footer-logo {
    margin-bottom: 20px;
}

.footer-info .footer-logo img {
    height: 32px;
}

.footer-info p {
    font-size: 14px;
    color: #ccc;
    margin-bottom: 12px;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #1890ff;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        margin-bottom: 60px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .hero-buttons {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        margin: 0 0 16px 0;
        width: 100%;
        max-width: 300px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .download-buttons .btn {
        margin: 0 0 16px 0;
        width: 100%;
        max-width: 300px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}