body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: #0f172a;
    color: white;
}

.container {
    padding: 40px;
}

header h1 {
    margin: 0;
    font-size: 32px;
}

.subtitle {
    color: #94a3b8;
    margin-bottom: 40px;
}

.metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.card {
    background: #1e293b;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.card h3 {
    margin: 0;
    color: #94a3b8;
    font-weight: 500;
}

.card p {
    font-size: 34px;
    margin-top: 10px;
    font-weight: bold;
}

.highlight {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}