body {
    background: #0f172a;
    color: #fff;
    font-family: Arial, sans-serif;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 380px;
    background: #111827;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 0 40px rgba(0,0,0,.5);
    text-align: center;
}

h1 {
    margin-bottom: 10px;
    font-size: 34px;
}

p {
    color: #94a3b8;
    margin-bottom: 30px;
}

.card {
    background: #1e293b;
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 15px;
}

.label {
    color: #94a3b8;
    font-size: 14px;
    margin-bottom: 5px;
}

.value {
    font-size: 30px;
    font-weight: bold;
}

button {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 12px;
    background: #2563eb;
    color: white;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}