/* 全局样式 */
* {
    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;
}

        .navbar {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            padding: 15px 0;
        }

        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color);
            font-size: 1.5rem;
        }

        .nav-link {
            color: var(--dark-color);
            font-weight: 600;
            margin: 0 10px;
            transition: all 0.3s;
        }

        .nav-link:hover {
            color: var(--primary-color);
        }


/* 导航栏样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 1rem 0;
}

nav ul li {
    margin: 0 1.5rem;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #007bff;
}

/* 主要内容区域 */
main {
    margin-top: 60px;
}

section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* 首页hero区域 */
#home {
    text-align: center;
    padding: 6rem 2rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

#home h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 2rem;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: #0056b3;
}

/* 功能展示区域 */
#features {
    background-color: #fff;
    text-align: center;
}

.feature {
    margin: 2rem 0;
    padding: 1.5rem;
    border-radius: 8px;
    transition: transform 0.3s;
}

.feature:hover {
    transform: translateY(-5px);
}

/* 联系表单 */
form {
    max-width: 600px;
    margin: 0 auto;
}

input, textarea {
    width: 100%;
    padding: 0.8rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

textarea {
    height: 150px;
    resize: vertical;
}

button {
    background-color: #007bff;
    color: white;
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #0056b3;
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
}

footer p {
    margin: 0.5rem 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        text-align: center;
    }
    
    nav ul li {
        margin: 0.5rem 0;
    }
    
    #home h1 {
        font-size: 2rem;
    }
    
    section {
        padding: 2rem 1rem;
    }
}