body {
    background-color: #f5f6f8;
}
.card {
    border: none;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 600;
}
code.tracking-link {
    display: block;
    padding: .5rem .75rem;
    background: #eef1f5;
    border-radius: .375rem;
    word-break: break-all;
}