body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        background-color: #f4f7f9;
        color: #333;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
        margin: 0;
    }
    .container {
        text-align: center;
        background: #fff;
        padding: 40px;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    }
    h1 {
        font-size: 2.5em;
        color: #2c3e50;
    }
    .status {
        margin-top: 20px;
        font-size: 1.1em;
    }
    .status-ok {
        color: #27ae60;
        font-weight: bold;
    }