body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4; /* 浅灰色背景，避免单调 */
}

.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 20px;
    background: #fff; /* 白色主体背景 */
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
}

.resource-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

.resource-list li {
    flex: 1 1 250px;
    margin-bottom: 20px;
    background: #f9f9f9; /* 浅色背景 */
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.resource-list li:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
}

.resource-name {
    font-weight: bold;
    color: #555;
    margin-bottom: 10px;
}

.download-btn {
    padding: 10px 20px;
    font-size: 1em;
    cursor: pointer;
    border: none;
    border-radius: 4px;
    color: #fff;
    text-transform: uppercase;
    transition: background-color 0.3s;
}

.btn-blue { background-color: #007bff; }
.btn-green { background-color: #28a745; }
.btn-purple { background-color: #6f42c1; }
.btn-orange { background-color: #FFA500; }
/* 新增的“更多资源项”板块样式 */
.more-resources {
    margin-top: 40px; /* 与上方内容保持一定距离 */
    padding: 20px;
    background: #f9f9f9; /* 浅色背景，与资源列表保持一致 */
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); /* 轻微的阴影效果 */
}

.more-resources h2 {
    text-align: center;
    color: #333;
    font-size: 1.8em;
    margin-bottom: 20px;
}