/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    color: #333;
    line-height: 1.6;
    background-color: #f7f7f7;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
}

/* 头部样式 */
header {
    text-align: center;
    background: #333;
    color: #fff;
    padding: 20px 0;
}

/* 导航栏样式 */
.flex-nav {
    display: flex;
    justify-content: center;
    list-style: none;
    background: #444;
    padding: 10px 0;
}

.flex-nav li {
    margin: 0 10px;
}

.flex-nav li a {
    color: #fff;
    text-decoration: none;
    padding: 5px 10px;
}

.flex-nav li a:hover {
    background-color: #555;
}

/* 轮播图样式 */
.carousel {
    position: relative;
    overflow: hidden;
    max-width: 100%;
    margin-top: 20px;
}

.carousel-item {
    width: 100%;
    transition: transform 0.5s ease;
}

.carousel-item img {
    width: 100%;
    display: block;
    border-radius: 8px;
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    width: 100%;
    padding: 10px;
    text-align: center;
}

/* 资源网格样式 */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.resource-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.resource-card img {
    width: 100%;
    height: auto;
    display: block;
}

.card-content {
    padding: 15px;
}

.card-content h3 {
    color: #007BFF;
    margin-bottom: 8px;
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px 0;
    margin-top: 20px;
}