body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0a0f1c;
    color: #e5e7eb;
}

.container {
    max-width: 820px;
    margin: 60px auto;
    padding: 20px;
}

h1 {
    font-size: 38px;
    margin-bottom: 8px;
}

.subtitle {
    color: #9ca3af;
    margin-bottom: 20px;
}

canvas {
    width: 100%;
    margin-bottom: 30px;
    border-radius: 6px;
    background: #050814;
}

.card {
    background: #111827;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    border: 1px solid #1f2937;
}

ul {
    padding-left: 20px;
}

footer {
    margin-top: 40px;
    font-size: 14px;
    color: #6b7280;
}