body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    color: #333;
}

h1 { 
    text-align: center; 
    color: #2c3e50; 
}

h2 { 
    color: #34495e; 
    margin-top: 30px; 
}

.last-updated {
    text-align: right;
    color: #666;
    font-style: italic;
}

.loading {
    text-align: center;
    padding: 20px;
    color: #666;
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #e0e0e0;
    }
    h1 { color: #9db4d0; }
    h2 { color: #a8c0d9; }
    .loading { color: #999; }
}