/* 基础样式 */
body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
}

.content {
    padding: 20px 40px;
}

/* 标题样式 */
h1, h2, h3, h4 {
    color: #2C3E50;
    margin-top: 1.5em;
    margin-bottom: 0.8em;
}

h1 {
    font-size: 2em;
    border-bottom: 2px solid #3498DB;
    padding-bottom: 10px;
    text-align: center;
    margin-top: 0;
}

h2 {
    font-size: 1.5em;
    border-bottom: 1px solid #BDC3C7;
    padding-bottom: 5px;
}

h3 {
    font-size: 1.2em;
    margin-top: 25px;
}

/* 代码样式 */
pre, code {
    background-color: #f0f0f0;
    border-radius: 3px;
    font-family: Consolas, Monaco, 'Courier New', monospace;
}

code {
    padding: 2px 5px;
    color: #c7254e;
}

pre {
    padding: 15px;
    overflow-x: auto;
    border: 1px solid #ddd;
    margin: 15px 0;
}

pre code {
    color: #333;
    padding: 0;
    background: none;
}

/* 特殊元素样式 */
.highlight {
    background-color: #ffffcc;
    padding: 2px;
}

.note {
    background-color: #e8f4f8;
    border-left: 4px solid #3498DB;
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 5px 5px 0;
}

.warning {
    background-color: #fff3e0;
    border-left: 4px solid #f57c00;
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 5px 5px 0;
}

.workflow {
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    margin: 20px 0;
}

/* 列表样式 */
ul, ol {
    padding-left: 25px;
}

li {
    margin: 8px 0;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background-color: #fff;
}

th, td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

th {
    background-color: #f5f5f5;
    font-weight: bold;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

/* 卡片布局 */
.class-structure {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.class-box {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.class-box h4 {
    margin-top: 0;
    color: #2980B9;
    border-bottom: 1px solid #eee;
    padding-bottom: 8px;
}

/* 导航链接 */
.back-link {
    display: inline-block;
    margin: 20px 0;
    padding: 8px 15px;
    background-color: #3498DB;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.back-link:hover {
    background-color: #2980B9;
}

/* 头像示例样式 */
.avatar-example {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin: 30px 0;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.avatar-item {
    text-align: center;
    transition: transform 0.3s ease;
}

.avatar-item:hover {
    transform: translateY(-5px);
}

.avatar-demo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.avatar-item:hover .avatar-demo {
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.avatar-letter {
    color: white;
    font-size: 48px;
    font-weight: bold;
    font-family: 'Microsoft YaHei', sans-serif;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.avatar-name {
    margin-top: 15px;
    font-size: 16px;
    color: #333;
    font-weight: 500;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .content {
        padding: 15px;
    }
    
    .class-structure {
        grid-template-columns: 1fr;
    }
    
    table {
        display: block;
        overflow-x: auto;
    }
    
    .avatar-example {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        padding: 20px;
    }
    
    .avatar-demo {
        width: 100px;
        height: 100px;
    }
    
    .avatar-letter {
        font-size: 40px;
    }
}

/* 打印样式 */
@media print {
    body {
        background-color: white;
        padding: 20px;
    }
    
    .back-link {
        display: none;
    }
    
    pre, code {
        white-space: pre-wrap;
    }
}