body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
    background: #f7f7f8;
    color: #1a1a1a;
}

.site-header {
    padding: 16px 24px;
    background: #111827;
    color: #fff;
}

.brand {
    font-weight: 600;
}

main {
    max-width: 720px;
    margin: 48px auto;
    padding: 0 24px;
}

.panel {
    background: #fff;
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}