:root{--ink:#0f172a;--muted:#475569;--brand:#4f46e5;--brand-dark:#3730a3;--surface:#f8fafc;--line:#e2e8f0;--accent:#b45309}*{box-sizing:border-box}body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,sans-serif;color:var(--ink);background:radial-gradient(ellipse 80% 50% at 10% -10%,#c7d2fe 0%,transparent 55%),radial-gradient(ellipse 60% 40% at 100% 0%,#fde68a 0%,transparent 45%),var(--surface);line-height:1.6}a{color:var(--brand)}header,main,footer{max-width:46rem;margin:0 auto;padding:1.5rem 1.25rem}header{padding-top:2rem;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem 1.25rem}.brand{display:inline-flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--ink);font-weight:800;font-size:1.15rem}.header-nav{display:flex;flex-wrap:wrap;gap:.75rem 1rem;font-size:.9rem;font-weight:600}.header-nav a{color:var(--muted);text-decoration:none}.header-nav a:hover{color:var(--brand)}.brand img{width:40px;height:40px;border-radius:10px;background:#fff}h1{font-size:clamp(1.75rem,4vw,2.35rem);line-height:1.2;margin:1.25rem 0 .75rem;letter-spacing:-.02em}.lead{font-size:1.1rem;color:var(--muted);margin:0 0 1.5rem}.cta{display:inline-block;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff!important;text-decoration:none;font-weight:700;padding:.85rem 1.25rem;border-radius:12px;margin:.25rem .5rem .25rem 0}.cta.secondary{background:#fff;color:var(--brand)!important;border:2px solid #c7d2fe}h2{font-size:1.25rem;margin:2rem 0 .75rem}h3{font-size:1.05rem;margin:1.25rem 0 .5rem}ul{padding-left:1.2rem;color:var(--muted)}li{margin:.4rem 0}p{color:var(--muted)}.card{background:rgba(255,255,255,.85);border:1px solid var(--line);border-radius:16px;padding:1.25rem 1.35rem;margin:1.25rem 0}footer{color:var(--muted);font-size:.875rem;border-top:1px solid var(--line);margin-top:2rem}.related{display:flex;flex-wrap:wrap;gap:.75rem 1.25rem;margin-top:1rem}.related a{font-weight:600;font-size:.95rem}