:root { --bg:#0b0f14; --card:#121824; --text:#edf2f7; --muted:#a0aec0; --accent:#7c3aed; --accent-2:#22d3ee;}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:linear-gradient(180deg,var(--bg),#0e141e);color:var(--text);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial}
.container{max-width:980px;margin:0 auto;padding:24px}
.header{padding:28px 0}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:36px;height:36px;border-radius:10px;background:linear-gradient(145deg,var(--accent),var(--accent-2));box-shadow:0 10px 30px rgba(34,211,238,.25)}
h1{font-size:clamp(28px,4vw,40px);margin:12px 0 8px}
.sub{color:var(--muted);margin:0}
.nav{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 24px}
.nav a{padding:10px 14px;border:1px solid #273044;border-radius:999px;color:var(--text);text-decoration:none;background:#0f1624;transition:.2s}
.nav a:hover{transform:translateY(-1px);border-color:#334155;box-shadow:0 8px 20px rgba(124,58,237,.15)}
.card{background:linear-gradient(180deg,#121824,#121824cc);border:1px solid #1e2636;border-radius:20px;padding:22px;box-shadow:0 10px 40px rgba(0,0,0,.25)}
.card h2{margin-top:0}
.grid{display:grid;grid-template-columns:1fr;gap:16px}
ul.check{list-style:none;padding:0;margin:0}
ul.check li{padding-left:28px;position:relative;margin:10px 0}
ul.check li::before{content:"✔";position:absolute;left:0;top:0;color:var(--accent-2)}
a.cta{display:inline-block;margin-top:10px;padding:10px 14px;border-radius:12px;background:linear-gradient(145deg,var(--accent),var(--accent-2));color:white;text-decoration:none}
footer{margin:28px 0;color:var(--muted);font-size:14px}
footer a{color:#c4b5fd}
code, pre{background:#0f1624;border:1px solid #273044;border-radius:10px;padding:2px 6px}
@media (min-width:840px){
  .grid{grid-template-columns:1.2fr .8fr}
}