body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: #0b1220;
    color: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    padding: 48px 24px;
}

h1 {
    font-size: 2.8rem;
    margin: 0 0 8px 0;
    letter-spacing: -0.02em;
}

p.subtitle {
    color: #94a3b8;
    margin-bottom: 32px;
    font-size: 1.05rem;
}

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

.card {
    background: #111a2e;
    border: 1px solid #1f2a44;
    border-radius: 14px;
    padding: 18px;
    transition: transform 0.15s ease, border-color 0.15s ease;
}

.card:hover {
    transform: translateY(-3px);
    border-color: #334155;
}

.card h2 {
    margin: 0 0 6px 0;
    font-size: 1.15rem;
}

.card p {
    margin: 0 0 12px 0;
    color: #cbd5e1;
    font-size: 0.95rem;
    line-height: 1.4;
}

a.button {
    display: inline-block;
    padding: 8px 12px;
    border-radius: 10px;
    background: #2563eb;
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
}

a.button:hover {
    background: #1d4ed8;
}

footer {
    margin-top: 28px;
    color: #64748b;
    font-size: 0.85rem;
}