:root{--fg:#0f172a;--muted:#475569;--bg:#ffffff;--brand:#066aff;--card:#f8fafc;--border:#e2e8f0}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;margin:0;color:var(--fg);background:var(--bg);line-height:1.6}
.container{max-width:1100px;margin:0 auto;padding:1.25rem}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
header.hero{background:linear-gradient(135deg,#0f172a 0%,#1e293b 60%,#0b5cff 120%);color:#fff;padding:4rem 1rem}
.hero h1{margin:0 0 .5rem 0;font-size:clamp(2rem,4.2vw,3rem)}
.hero p{opacity:.95;max-width:800px}
.cta{margin-top:1rem;display:flex;flex-wrap:wrap;gap:.75rem}
.btn{display:inline-block;background:#fff;color:#0b5cff;border-radius:12px;padding:.7rem 1rem;font-weight:600;border:0}
.btn.secondary{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}
.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:1rem}
.card h3{margin:.2rem 0 .5rem 0}
section h2{font-size:clamp(1.4rem,2.5vw,1.9rem);margin:2rem 0 .75rem}
ul.check{list-style:none;padding-left:0;margin:.25rem 0}
ul.check li{padding-left:1.4rem;position:relative}
ul.check li:before{content:"✓";position:absolute;left:0;color:#0b5cff}
footer{border-top:1px solid var(--border);margin-top:2rem}
.badge{display:inline-block;padding:.2rem .5rem;border-radius:999px;background:#eef2ff;color:#3730a3;font-size:.8rem;margin-right:.35rem}
.breadcrumbs{font-size:.9rem;color:var(--muted);margin:.5rem 0 1rem}
pre,code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
pre{background:#0b1220;color:#d6e1ff;padding:1rem;border-radius:12px;overflow:auto}