/* 基本样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: #1a73e8;
}

ul {
    list-style: none;
}

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 20px 0;
    position: relative;
}

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

.logo h1 {
    color: #1a73e8;
    font-size: 28px;
}

nav ul {
    display: flex;
}

nav li {
    margin-left: 20px;
}

nav a {
    color: #555;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #1a73e8;
}

/* 主要内容区域 */
main {
    padding: 40px 0;
}

.hero {
    text-align: center;
    background-color: #f9f9f9;
    padding: 60px 0;
    margin-bottom: 40px;
}

.hero h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: #1a73e8;
}

.hero p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto;
    color: #555;
}

.features {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}

.features .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.feature {
    flex: 1;
    min-width: 300px;
    background-color: #fff;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 20px;
}

.feature h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #333;
}

.feature p {
    color: #666;
}

/* 页脚样式 */
footer {
    background-color: #f5f5f5;
    padding: 40px 0;
    color: #555;
}

footer .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.company-info {
    flex: 1;
    min-width: 300px;
    margin-bottom: 20px;
}

.company-info h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.company-info p {
    margin-bottom: 10px;
}

.footer-links {
    flex: 1;
    min-width: 200px;
    margin-bottom: 20px;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.copyright {
    width: 100%;
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }
    
    .logo h1 {
        font-size: 24px;
    }
    
    nav {
        margin-top: 20px;
        width: 100%;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav li {
        margin: 5px 10px;
    }
    
    .hero {
        padding: 40px 0;
    }
    
    .hero h2 {
        font-size: 28px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .feature {
        min-width: 100%;
    }
    
    footer .container {
        flex-direction: column;
    }
    
    .contact-detail {
        flex-direction: column;
    }
    
    .contact-detail strong {
        margin-bottom: 5px;
    }
    
    .form-group label {
        font-size: 15px;
    }
    
    .form-control {
        font-size: 15px;
    }
    
    .btn {
        width: 100%;
    }
}

/* 超小屏幕适配 */
@media (max-width: 480px) {
    .logo h1 {
        font-size: 20px;
    }
    
    nav li {
        margin: 3px 8px;
    }
    
    nav a {
        font-size: 14px;
    }
    
    .hero h2 {
        font-size: 24px;
    }
    
    .hero p {
        font-size: 14px;
    }
    
    .feature {
        padding: 20px;
    }
    
    .feature h3 {
        font-size: 18px;
    }
    
    main {
        padding: 20px 0;
    }
    
    .company-info h3 {
        font-size: 18px;
    }
    
    .company-info p,
    .footer-links ul li a {
        font-size: 14px;
    }
}