:root{
    --bg:#0a0e17; --surface:#121826; --surface-2:#0e1421;
    --border:rgba(255,255,255,.08); --border-strong:rgba(255,255,255,.14);
    --text:#eef1f6; --muted:#98a2b3;
    --accent:#2dd4bf; --accent-strong:#14b8a6; --accent-ink:#05201c;
    --radius:14px; --maxw:1160px; --readw:720px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    background:var(--bg); color:var(--text);
    font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
    line-height:1.7; -webkit-font-smoothing:antialiased;
    background-image:radial-gradient(1200px 500px at 80% -10%,rgba(45,212,191,.10),transparent 60%);
  }
  h1,h2,h3{font-family:'Inter',system-ui,-apple-system,sans-serif;line-height:1.2;letter-spacing:-.02em;font-weight:800}
  a{color:inherit;text-decoration:none}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
  .read{max-width:var(--readw);margin:0 auto;padding:0 24px}
  .accent{color:var(--accent)}
  .eyebrow{font-family:'Poppins';font-weight:700;font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}

  header{position:sticky;top:0;z-index:50;background:rgba(10,14,23,.72);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:68px}
  .brand{display:flex;align-items:center;gap:10px;font-family:'Poppins';font-weight:700;font-size:1.22rem}
  .nav-links{display:flex;align-items:center;gap:30px}
  .nav-links a{color:var(--muted);font-weight:500;font-size:.95rem}
  .nav-links a:hover{color:var(--text)}
  .hamburger{display:none;background:transparent;border:1px solid var(--border-strong);border-radius:10px;width:44px;height:44px;cursor:pointer;align-items:center;justify-content:center}
  .hamburger svg{width:22px;height:22px;color:var(--text)}
  .mobile-menu{display:none;border-top:1px solid var(--border);background:var(--surface-2)}
  .mobile-menu.open{display:block}
  .mobile-menu a{display:block;padding:14px 24px;color:var(--muted);font-weight:500;border-bottom:1px solid var(--border)}

  .article-head{padding:52px 24px 30px;text-align:center}
  .back{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-weight:600;font-size:.9rem;margin-bottom:22px}
  .back:hover{color:var(--accent)}
  .article-head h1{font-size:clamp(2rem,4.6vw,3.1rem);font-weight:800;margin:14px auto 0;max-width:22ch}
  .article-head .lede{color:var(--muted);font-size:1.15rem;max-width:60ch;margin:20px auto 0}
  .byline{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;row-gap:6px;column-gap:10px;margin-top:28px;color:var(--muted);font-size:.92rem}
  .byline span:not(.av):not(.dot){white-space:nowrap}
  .av{width:40px;height:40px;border-radius:50%;background-image:url('https://paymegpt.com/objects/quick-uploads/2/6a02a4d570348ea0.jpg');background-size:cover;background-position:center;flex:0 0 auto}
  .dot{width:4px;height:4px;border-radius:50%;background:var(--muted);opacity:.6;flex:0 0 auto}
  .cover{max-width:960px;margin:34px auto 0;height:min(46vw,420px);border-radius:22px;border:1px solid var(--border);background-image:url('https://paymegpt.com/objects/quick-uploads/2/13f5748ae661639b.jpg');background-size:cover;background-position:center}

  article{padding:44px 0 20px}
  article p{color:#cdd4df;font-size:1.09rem;margin:0 0 24px}
  article h2{font-size:1.7rem;font-weight:700;margin:40px 0 16px}
  article h3{font-size:1.28rem;font-weight:700;margin:30px 0 12px}
  article ol,article ul{margin:0 0 24px;padding-left:22px;color:#cdd4df;font-size:1.09rem}
  article li{margin-bottom:10px}
  article li::marker{color:var(--accent)}
  blockquote{margin:32px 0;padding:20px 26px;border-left:3px solid var(--accent);background:rgba(45,212,191,.06);border-radius:0 12px 12px 0;font-family:'Poppins';font-size:1.2rem;font-weight:600;color:var(--text);line-height:1.5}
  .callout{margin:32px 0;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:14px}
  .callout h3{margin-top:0}
  .tag{font-family:'Poppins';font-weight:700;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
  .divider{border:0;border-top:1px solid var(--border);margin:44px 0}

  .offer{margin:36px 0;background:linear-gradient(140deg,rgba(45,212,191,.12),rgba(59,130,246,.08));border:1px solid var(--border);border-radius:22px;padding:40px;text-align:center}
  .offer h2{margin-top:0;font-size:clamp(1.5rem,2.8vw,2rem)}
  .offer p{color:var(--muted);max-width:52ch;margin:12px auto 26px}
  .form{display:flex;flex-direction:column;gap:12px;max-width:420px;margin:0 auto}
  .form input{background:var(--surface-2);border:1px solid var(--border-strong);border-radius:11px;padding:13px 16px;color:var(--text);font-size:.95rem;font-family:inherit;width:100%}
  .form input:focus{outline:none;border-color:var(--accent)}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;border-radius:11px;cursor:pointer;transition:transform .12s,background .15s;border:0;background:var(--accent);color:var(--accent-ink);padding:13px 20px;font-size:.95rem}
  .btn:hover{background:#45e3c6;transform:translateY(-1px)}
  .btn:disabled{opacity:.6;cursor:not-allowed;transform:none}
  .form-msg{margin-top:14px;font-size:.9rem;min-height:1.4em}
  .form-msg.ok{color:var(--accent)}
  .form-msg.err{color:#f87171}
  .download-link{display:none;margin-top:6px}
  .download-link.show{display:inline-flex}

  .author{display:flex;gap:18px;align-items:flex-start;border-top:1px solid var(--border);padding:30px 0 6px;margin-top:34px}
  .author .av{width:56px;height:56px}
  .author-label{display:block;font-family:'Poppins';font-weight:700;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);opacity:.85;margin-bottom:6px}
  .author h4{font-family:'Poppins';font-weight:700;font-size:1.05rem;margin-bottom:4px}
  .author p{color:var(--muted);font-size:.95rem;margin:0;max-width:56ch}

  footer{border-top:1px solid var(--border);margin-top:30px;padding:40px 0 30px;text-align:center;color:var(--muted);font-size:.88rem}

  @media (max-width:820px){
    .read{padding:0 30px}
    .article-head{padding:40px 30px 26px}
    .article-head h1{font-size:clamp(1.75rem,7vw,2.35rem);max-width:100%}
    .article-head .lede{font-size:1.04rem;max-width:100%}
    .offer{padding:32px 24px;border-radius:18px}
    .author{gap:14px;padding-top:26px}
    .author .av{width:48px;height:48px}
  }