body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #f6f6f8;
    color: #222;
}

.site-header {
    background: #111827;
    color: white;
    padding: 16px 32px;
}

.site-header h1 {
    margin: 0 0 8px;
    font-size: 24px;
}

.site-header a {
    color: white;
    text-decoration: none;
    margin-right: 16px;
}

.site-main {
    max-width: 960px;
    margin: 40px auto;
    padding: 0 24px;
}

.hero-card {
    background: white;
    padding: 32px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.hero-card h2 {
    margin-top: 0;
    font-size: 28px;
}

.site-footer {
    text-align: center;
    padding: 32px;
    color: #666;
}