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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 头部样式 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.notice {
    padding: 15px 0;
    text-align: center;
}

.statement-link {
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.statement-link:hover {
    color: #0056b3;
    text-decoration: underline;
}

/* 主要内容 */
.main {
    padding: 60px 0;
}

/* 介绍部分 */
.intro {
    text-align: center;
    margin-bottom: 80px;
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 10px;
}

.logo-img {
    height: 100px;
    width: auto;
    max-width: 100px;
    object-fit: contain;
}

.logo-text {
    font-size: 4rem;
    font-weight: bold;
    color: #2c3e50;
    margin: 0;
}

.subtitle {
    font-size: 1.5rem;
    color: #7f8c8d;
    margin-bottom: 40px;
}

.description {
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.description p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.8;
}

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

.description a {
    color: #007bff;
    text-decoration: none;
}

.description a:hover {
    text-decoration: underline;
}

/* 服务部分 */
.services {
    margin-bottom: 60px;
}

.services h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 50px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

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

.service-card h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.service-card p {
    color: #7f8c8d;
    font-size: 1rem;
    line-height: 1.6;
}

/* 底部样式 */
.footer {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 40px 0;
    margin-top: 60px;
}

.footer-content {
    text-align: center;
}

.footer-content p {
    margin-bottom: 10px;
}

.footer-content p:last-child {
    margin-bottom: 0;
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .logo-container {
        flex-direction: column;
        gap: 10px;
    }
    
    .logo-img {
        height: 50px;
        max-width: 70px;
    }
    
    .logo-text {
        font-size: 3rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .description {
        padding: 30px 20px;
    }
    
    .services h2 {
        font-size: 2rem;
    }
    
    .service-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-card {
        padding: 30px 20px;
    }
    
    .main {
        padding: 40px 0;
    }
}

@media (max-width: 480px) {
    .logo-img {
        height: 40px;
        max-width: 60px;
    }
    
    .logo-text {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .description {
        padding: 20px 15px;
    }
    
    .description p {
        font-size: 1rem;
    }
    
    .services h2 {
        font-size: 1.8rem;
    }
    
    .card-icon {
        font-size: 2.5rem;
    }
    
    .service-card h3 {
        font-size: 1.3rem;
    }
}