/* 基础样式 */
body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
    color: #333;
}

/* 导航栏样式 */
nav {
    background-color: #222;
    padding: 10px 0;
    text-align: center;
}

nav a {
    color: #fff;
    text-decoration: none;
    padding: 12px 18px;
    margin: 0 12px;
    display: inline-block;
    font-size: 16px;
}

nav a:hover {
    background-color: #575757;
    border-radius: 5px;
}

/* 首页大图 */
.hero-image {
    width: 100%;
    height: 300px;
    background-image: url('path_to_hero_image.jpg');
    background-position: center;
    background-size: cover;
    position: relative;
}

.hero-image h1 {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 40px;
    font-weight: bold;
}

/* 内容区域 */
.main-content {
    padding: 30px 20px;
    background-color: #fff;
}

h2 {
    color: #2c3e50;
    font-size: 28px;
    margin-bottom: 20px;
}

h3 {
    font-size: 24px;
    color: #2980b9;
    margin-top: 20px;
}

p {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* 列表样式 */
ul {
    list-style: none;
    padding: 0;
}

li {
    padding: 10px;
    margin: 5px 0;
    background-color: #ecf0f1;
    border-radius: 5px;
}

/* 底部样式 */
footer {
    background-color: #222;
    color: #fff;
    text-align: center;
    padding: 15px;
    font-size: 14px;
}

footer a {
    color: #fff;
    text-decoration: none;
    margin-left: 10px;
}

footer a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-image h1 {
        font-size: 28px;
    }

    nav a {
        font-size: 14px;
        padding: 8px 10px;
    }
}