:root{--primary:#0a66c2;--bg:#f3f2ef;--card-bg:#fff;--text:#1d1d1d;--muted:#666;--radius:8px;--shadow:0 1px 4px rgba(0,0,0,.08)}body{background:var(--bg);color:var(--text);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Arial,sans-serif}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{grid-template-columns:280px 1fr;gap:1.5rem;max-width:1200px;margin:2rem auto;padding:0 1rem;display:grid}.card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem}h2{border-bottom:1px solid #e5e5e5;margin-bottom:1rem;padding-bottom:.5rem;font-size:1.3rem}