:root {
    --brand: #2563eb;
    --brand-soft: #e8efff;
    --danger: #dc2626;
    --bg: #f8fafc;
    --card: #ffffff;
    --border: #e5e7eb;
    --text: #111827;
    --muted: #6b7280;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.card {
    max-width: 960px;
    margin: 32px auto;
    background: var(--card);
    border-radius: 12px;
    padding: 24px 28px;
    box-shadow: 0 10px 25px rgba(0,0,0,.05);
}

h1, h2 {
    margin-top: 0;
}

.subtitle {
    color: var(--muted);
    margin-bottom: 16px;
}