body {
    font-family: system-ui, sans-serif;
    background: #0e1020;
    color: #eaeaf0;
    margin: 0;
    padding: 24px;
}

h1 {
    text-align: center;
    margin-bottom: 40px;
    font-weight: 600;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.card {
    background: #1a1d33;
    padding: 16px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.card.up {
    border-left: 5px solid #2ecc71;
}

.card.down {
    border-left: 5px solid #e74c3c;
    opacity: 0.75;
}

.card strong {
    font-size: 1.1em;
}

.card span {
    font-weight: 600;
}

.card small {
    opacity: 0.65;
}

footer {
    text-align: center;
    margin-top: 60px;
    opacity: 0.4;
}