/* site.css — minimal base styles */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; }
body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #f9fafb;
    color: #111827;
    line-height: 1.5;
}
a { color: #4f46e5; }
h1, h2, h3 { margin-top: 0; }