body {
    font-family: Arial, sans-serif;
    background-color: #f4f6f9;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.card {
    background: #ffffff;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    width: 100%;
}

h1 {
    margin-top: 0;
    color: #1a73e8;
}

.subtitle {
    color: #666;
    margin-bottom: 20px;
}

h2 {
    font-size: 18px;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 5px;
    margin-top: 20px;
}

ul {
    padding-left: 20px;
    line-height: 1.6;
}