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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    padding-top: 60px;
}

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

/* 导航栏 */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #1a56db;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: #4b5563;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    color: #1a56db;
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-primary {
    background: #1a56db;
    color: white;
}

.btn-primary:hover {
    background: #1e429f;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, #1a56db 0%, #1e429f 100%);
    color: white;
    padding: 100px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 内容区 */
.section {
    padding: 60px 0;
}

.content-card {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

.content-card h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: #1f2937;
}

.content-card p {
    color: #4b5563;
    line-height: 1.8;
    margin-bottom: 15px;
}

/* 团队网格 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.team-card {
    background: #f9fafb;
    border-radius: 10px;
    padding: 25px;
}

.team-card h3 {
    color: #1a56db;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

/* 产品网格 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    text-align: center;
}

.product-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.product-card h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #1f2937;
}

.product-card h3 {
    font-size: 1.2rem;
    color: #6b7280;
    margin-bottom: 20px;
    font-weight: normal;
}

.feature-list {
    list-style: none;
    text-align: left;
    margin: 20px 0;
}

.feature-list li {
    padding: 8px 0;
    border-bottom: 1px solid #e5e7eb;
    color: #4b5563;
}

.feature-list li:last-child {
    border-bottom: none;
}

/* 解决方案标签 */
.solution-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.tab-btn {
    padding: 12px 24px;
    background: #f3f4f6;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.tab-btn:hover,
.tab-btn.active {
    background: #1a56db;
    color: white;
}

.tab-content {
    display: none;
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.tab-content.active {
    display: block;
}

.tab-content h2 {
    color: #1f2937;
    margin-bottom: 20px;
}

.tab-content p {
    color: #4b5563;
    margin-bottom: 15px;
    line-height: 1.8;
}

/* 页脚 */
.footer {
    background: #1f2937;
    color: white;
    padding: 30px 0;
    margin-top: 60px;
}

.copyright {
    text-align: center;
    color: #9ca3af;
    font-size: 0.9rem;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .content-card {
        padding: 20px;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-tabs {
        flex-direction: column;
    }
}