/* 全局样式 */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    background-color: #f0f0f0;
}

/* 头部样式 */
header {
    background-color: #2c3e50;
    color: #fff;
    padding: 20px;
    text-align: center;
}

/* 导航样式 */
nav {
    display: flex;
    justify-content: center;
    background-color: #34495e;
    padding: 10px;
}

nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 15px;
    font-size: 1rem;
}

/* 主体部分样式 */
.hero {
    text-align: center;
    padding: 60px 20px;
    background-color: #ecf0f1;
}

.hero h2 {
    font-size: 2.5rem;
}

.hero p {
    font-size: 1.5rem;
}

/* 页脚样式 */
footer {
    background-color: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 20px;
    position: fixed;
    bottom: 0;
    width: 100%;
}

footer a {
    color: #fff;
    text-decoration: none;
}

/* 响应式布局 */
@media (max-width: 1024px) {
    .hero {
        padding: 50px 20px;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.2rem;
    }

    nav a {
        font-size: 0.9rem;
        margin: 0 10px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 30px 20px;
    }

    .hero h2 {
        font-size: 1.8rem;
    }

    .hero p {
        font-size: 1rem;
    }

    nav {
        flex-direction: column;
        align-items: center;
    }

    nav a {
        margin: 8px 0;
    }

    footer {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 0.9rem;
    }

    nav a {
        font-size: 0.8rem;
    }

    footer {
        padding: 10px;
    }

    header {
        padding: 15px;
    }

    nav {
        padding: 8px;
    }

    nav a {
        margin: 5px 0;
    }
}

/* 导航样式 */
header nav {
    display: flex;
    align-items: center;
    margin-left: 15px;
}

header nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

header nav ul li {
    margin-left: 10px;
}

header nav ul li a {
    color: #f0f0f0;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

header nav ul li a:hover {
    color: #ffffff;
}

@media (max-width: 768px) {
    header nav ul {
        flex-direction: column;
        margin-top: 8px;
    }

    header nav ul li {
        margin-left: 0;
        margin-bottom: 8px;
    }
}