/* WwwSEO_Net 基础样式：响应式布局，适配 PC 与移动端 */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", sans-serif;
    color: #333;
    background: #f7f8fa;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px;
}

.site-header {
    background: #fff;
    border-bottom: 1px solid #eaecef;
    padding: 12px 0;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: #2c3e50;
    text-decoration: none;
}

.site-nav a {
    margin-left: 16px;
    color: #476582;
    text-decoration: none;
}

.site-nav a:hover {
    color: #304455;
}

.site-main {
    padding: 24px 0;
}

.site-footer {
    text-align: center;
    color: #909399;
    font-size: 13px;
    padding: 24px 0;
}

pre {
    background: #1e1e1e;
    color: #9cdcfe;
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
}

.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 13px;
}

.tag-warning {
    background: #fdf6ec;
    color: #e6a23c;
    border: 1px solid #faecd8;
}

@media (max-width: 600px) {
    .site-header .container {
        flex-direction: column;
        align-items: flex-start;
    }

    .site-nav a {
        margin: 8px 16px 0 0;
    }
}