body {
    font-family: 'Open Sans', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(to bottom, #f0f4f8, #e8eef2);
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 标题和主要内容样式 */
header {
    background: linear-gradient(to right, #4a148c, #005cb2);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-bottom: 2rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

header p {
    font-size: 1.2rem;
    font-style: italic;
}

main {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

section {
    margin-bottom: 3rem;
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

section h2 {
    color: #4a148c;
    border-bottom: 2px solid #4a148c;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

/* 网格布局样式 */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.grid-item {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #eee;
}

/* 图片样式 */
.image-container {
    text-align: center;
    margin-bottom: 1rem;
}

.image-container img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
}

/* 列表样式 */
ul {
    list-style-type: square;
    padding-left: 20px;
}

/* 代码块样式 */
pre {
    background-color: #f0f0f0;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
    white-space: pre-wrap;
}

code {
    font-family: 'Courier New', monospace;
    color: #333;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

th, td {
    padding: 8px;
    border: 1px solid #ddd;
    text-align: left;
}

th {
    background-color: #f2f2f2;
    font-weight: bold;
}

/* 按钮样式 */
.button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.button:hover {
    background-color: #0056b3;
}

/* 页脚样式 */
footer {
    text-align: center;
    padding: 1rem;
    background-color: #333;
    color: white;
    font-size: 0.9rem;
}

/* 响应式布局 */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    .grid-container {
        grid-template-columns: 1fr;
    }
}