:root{color-scheme:dark}
  body{margin:0;background:#14131a;color:#eceaf4;font:15px/1.6 system-ui,"Segoe UI",sans-serif}
  .wrap{max-width:640px;margin:0 auto;padding:48px 22px 80px}
  h1{font-size:22px;margin:0 0 6px}
  h2{font-size:16px;margin:28px 0 8px}
  p,li{color:#b9b6c9}
  b,strong{color:#eceaf4}
  .brand{display:flex;align-items:center;gap:11px;margin-bottom:26px}
  .dot{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,#8b5cf6,#f59e0b)}
  .key{background:#1c1b25;border:1px solid #8b5cf6;border-radius:10px;padding:14px;
       font:13px/1.5 ui-monospace,Consolas,monospace;word-break:break-all;color:#fff;margin:10px 0}
  button{font:inherit;background:#8b5cf6;color:#fff;border:0;border-radius:8px;padding:9px 16px;cursor:pointer}
  ol{color:#b9b6c9} ol li{margin-bottom:6px}
  .err{color:#f87171}
  a{color:#a78bfa}
  .muted{font-size:13px;color:#8f8ca1}