* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background-color: #007BFF;
    color: #fff;
    padding: 20px;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
}

/* 分类导航栏样式 */
nav {
    background-color: #0056b3;
    padding: 10px;
    text-align: center;
}

nav ul {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

nav ul li {
    display: inline;
    margin: 0 15px;
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    cursor: pointer;
}

nav ul li:hover {
    text-decoration: underline;
}

.container {
    width: 90%;
    margin: 20px auto;
    max-width: 1200px;
    flex: 1; /* 使主内容区占据剩余的空间 */
    overflow-y: auto; /* 允许垂直滚动 */
    padding-bottom: 100px; /* 确保内容不会被 footer 遮挡 */
}

.banner {
    background-color: #0056b3;
    color: #fff;
    padding: 30px;
    text-align: center;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.banner img{
    width: 3rem;
}

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

.layui-flow-more{
    margin: 0 auto;
    flex-basis: 1200px;
}

.card {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    width: calc(33.333% - 20px);
    box-sizing: border-box;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #007BFF;
}

.card p {
    font-size: 1rem;
    line-height: 1.6;
    color: #555;
}

.serach-button{
    background: #fff;
    border: 0px;
}

footer {
    background-color: #007BFF;
    color: white;
    padding: 20px;
    text-align: center;
    position: fixed;
    bottom: 0;
    width: 100%;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    /* 平板设备 */
    .card {
        width: calc(50% - 20px);
    }

    header h1 {
        font-size: 2rem;
    }

    .banner h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    /* 手机设备 */
    .card {
        width: 100%;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .banner h2 {
        font-size: 1.2rem;
    }

    .card h3 {
        font-size: 1.3rem;
    }

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

    nav ul {
        list-style: none;
        display: inline-block;
    }

    nav ul li {
        display: block;
        margin: 5px 0;
    }
}