/* 主样式文件 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* 导航样式 */
nav {
    margin-top: 1rem;
}

nav a {
    color: white;
    text-decoration: none;
    margin-right: 20px;
    padding: 8px 16px;
    border-radius: 5px;
    transition: background 0.3s;
}

nav a:hover {
    background: rgba(255,255,255,0.2);
}

/* 主内容区 */
main {
    background: white;
    margin: 2rem 0;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

/* 文章样式 */
article h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.8rem;
    border-left: 4px solid #667eea;
    padding-left: 15px;
}

article .content {
    margin: 1.5rem 0;
    line-height: 1.8;
}

article .content p {
    margin-bottom: 1rem;
}

article .content ul, 
article .content ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

article .content li {
    margin-bottom: 0.5rem;
}

/* 信息栏样式 */
.info {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 5px;
    margin: 1.5rem 0;
    border-left: 3px solid #667eea;
}

.info p {
    margin: 0.25rem 0;
    color: #666;
    font-size: 0.9rem;
}

/* 链接样式 */
a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #5a67d8;
    text-decoration: underline;
}

/* 底部样式 */
footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

footer .links {
    margin-top: 1rem;
}

footer .links a {
    color: #bdc3c7;
    margin: 0 10px;
}

footer .links a:hover {
    color: white;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    main {
        margin: 1rem 0;
        padding: 1rem;
    }
    
    article h2 {
        font-size: 1.5rem;
    }
    
    nav a {
        display: block;
        margin: 5px 0;
    }
}

/* 特殊样式类 */
.highlight {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    margin: 2rem 0;
}

.btn {
    display: inline-block;
    background: #667eea;
    color: white;
    padding: 12px 24px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
}

.btn:hover {
    background: #5a67d8;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 卡片样式 */
.card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin: 1rem 0;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-3px);
}