:root{
      --brand:#7b3fe4;      /* violet accent */
      --ink:#0f1a2a;
      --muted:#6b7280;
      --soft:#f7f7fb;
      --line:#e6e9f0;
      --ok:#0ea5e9;
      --success:#16a34a;
      --warning:#f59e0b;
      --radius:16px;
      --shadow:0 10px 30px rgba(15,26,42,.08);
      --bg:#ffffff;
      --max:1120px;
    }
    *{box-sizing:border-box}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,Segoe UI,Arial,sans-serif;line-height:1.6}
    a{color:var(--brand);text-decoration:none}
    a:hover{text-decoration:underline}
    .wrap{max-width:var(--max);margin:0 auto;padding:24px}
    header.hero{
      background:linear-gradient(180deg,#faf9ff 0,#fff 100%);
      border-bottom:1px solid var(--line);
    }
    .hero .wrap{display:grid;grid-template-columns:1.3fr 1fr;gap:28px;align-items:center}
    .badge{display:inline-flex;align-items:center;gap:8px;background:#efe9ff;color:#5b34c7;border-radius:999px;padding:8px 12px;font-weight:600}
    .title{font-size:clamp(28px,3.2vw,44px);line-height:1.15;margin:14px 0 6px}
    .lead{color:var(--muted);font-size:clamp(16px,1.6vw,18px)}
    .cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
    .btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:12px;font-weight:700;border:1px solid transparent;box-shadow:var(--shadow)}
    .btn.primary{background:var(--brand);color:#fff}
    .btn.ghost{background:#fff;border-color:var(--line)}
    .hero-img{width:100%;aspect-ratio:4/3;border-radius:18px;border:1px solid var(--line);object-fit:cover}
    main article{display:grid;grid-template-columns:280px 1fr;gap:28px;margin-top:28px}
    nav.toc{position:sticky;top:24px;align-self:start;border:1px solid var(--line);border-radius:16px;padding:16px;background:#fff}
    nav.toc h3{margin:0 0 10px;font-size:14px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
    nav.toc a{display:block;padding:8px 6px;border-radius:8px;color:#374151}
    nav.toc a:hover{background:var(--soft)}
    section{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;margin-bottom:18px}
    h2{font-size:28px;margin:0 0 12px}
    h3{font-size:20px;margin:10px 0}
    .callout{background:#f4f9ff;border:1px solid #e6f2ff;border-left:6px solid var(--ok);padding:12px;border-radius:12px}
    .grid{display:grid;gap:14px}
    .grid.cols-2{grid-template-columns:repeat(2,1fr)}
    .grid.cols-3{grid-template-columns:repeat(3,1fr)}
    .card{border:1px solid var(--line);border-radius:14px;padding:14px;background:#fff}
    ul.check{list-style:none;padding-left:0;margin:0}
    ul.check li{padding-left:26px;position:relative;margin:8px 0}
    ul.check li:before{content:"✓";position:absolute;left:0;top:0;color:var(--success);font-weight:800}
    table{width:100%;border-collapse:collapse;border:1px solid var(--line);border-radius:12px;overflow:hidden}
    th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;font-size:15px}
    tr:nth-child(odd){background:#fafafa}
    .faq details{border:1px solid var(--line);border-radius:12px;padding:12px;background:#fff}
    .faq details+details{margin-top:10px}
    footer.cta{margin:28px 0 60px}
    .note{color:var(--muted);font-size:14px}
    @media (max-width:980px){
      .hero .wrap{grid-template-columns:1fr}
      main article{grid-template-columns:1fr}
    }