*,:before,:after{box-sizing:border-box}html,body,#root{width:100%;min-height:100%;margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.shell{background:radial-gradient(circle at 85% 15%,#13506a,#0000 35%),radial-gradient(circle at 15% 90%,#4f2f94,#0000 35%),#090d14;min-height:100vh;padding:32px}header{text-align:center;margin-bottom:26px}h1{color:#f8fbff;letter-spacing:-.03em;margin:0;font-size:clamp(38px,5vw,62px)}header p{color:#b5c2d6;margin:10px 0 0}.grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;max-width:820px;margin:0 auto;display:grid}.stack{background:#11182a;border:1px solid #2f3854;border-radius:16px;padding:16px}h2{color:#f2f7ff;margin:0 0 10px;font-size:20px}.items{gap:10px;display:grid}.items a{color:#f5f8ff;background:linear-gradient(120deg,#2d4e89,#256b7f);border-radius:10px;padding:12px;font-weight:600;text-decoration:none}