body {
    margin: 0;
    padding: 0;
    background: #0f1117;
    font-family: Arial, sans-serif;
    color: white;

    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    text-align: center;
}

h1 {
    font-size: 48px;
    margin-bottom: 10px;
}

.subtitle {
    color: #999;
    margin-bottom: 40px;
    font-size: 18px;
}

.code-box {
    display: inline-block;
    padding: 15px 30px;
    border: 2px solid #4da3ff;
    border-radius: 10px;
    background: #161b22;
    font-size: 24px;
    font-weight: bold;
    letter-spacing: 2px;
}