:root{
      --bg:#0b0f17;
      --surface:#0f1623;
      --card:#121a2a;
      --text:#e8edf5;
      --muted:#9aa6b2;
      --brand:#6aa0ff;
      --accent:#86ffd1;
      --border:#1f2a3a;
      --radius:16px;
      --shadow:0 10px 30px rgba(0,0,0,.35);
    }
    *{box-sizing:border-box}
    body{
      margin:0;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
      color:var(--text); background:linear-gradient(180deg,#0b0f17 0%, #0e1420 50%, #0b0f17 100%);
      line-height:1.6;
    }
    a{color:var(--brand); text-decoration:none}
    a:hover{text-decoration:underline}
    .wrap{max-width:1100px; margin:0 auto; padding:32px 20px 64px}
    header{
      position:relative; overflow:hidden; border-bottom:1px solid var(--border); padding:56px 20px 80px; margin-bottom:32px;
      background: radial-gradient(1200px 400px at 70% -100px, rgba(134,255,209,.18), transparent 60%),
                 radial-gradient(1000px 500px at -20% 0, rgba(106,160,255,.18), transparent 60%);
    }
    header h1{font-size:44px; line-height:1.15; margin:0 0 16px; letter-spacing:.2px}
    header p.lead{color:var(--muted); font-size:18px; margin:0 0 28px}
    .cta-row{display:flex; gap:14px; flex-wrap:wrap}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:10px;
      padding:12px 18px; border-radius:var(--radius); border:1px solid transparent;
      background:linear-gradient(135deg,var(--brand),var(--accent)); color:#0b1020; font-weight:700;
      box-shadow:var(--shadow); transition:transform .15s ease, box-shadow .15s ease;
    }
    .btn:hover{transform:translateY(-2px); box-shadow:0 16px 40px rgba(0,0,0,.45)}
    .btn.secondary{
      background:transparent; color:var(--text); border:1px solid var(--border)
    }
    main{display:grid; grid-template-columns: 280px 1fr; gap:32px}
    @media (max-width: 980px){ main{grid-template-columns:1fr} }
    nav.toc{
      position:sticky; top:20px; align-self:start; background:var(--surface); padding:18px; border-radius:var(--radius);
      box-shadow:var(--shadow)
    }
    nav.toc h2{margin:0 0 12px; font-size:16px; letter-spacing:.08em; text-transform:uppercase; color:var(--muted)}
    nav.toc a{display:block; padding:8px 0}
    article{background:var(--surface); border-radius:var(--radius); box-shadow:var(--shadow); overflow:hidden}
    .section{padding:28px 28px 8px}
    .section h2{font-size:28px; margin:0 0 8px}
    .section p{margin:10px 0}
    .badge{
      display:inline-block; padding:6px 12px; border-radius:999px; background:rgba(134,255,209,.12); color:var(--accent);
      font-size:12px; letter-spacing:.06em; text-transform:uppercase; border:1px solid rgba(134,255,209,.3)
    }
    .grid-2{display:grid; grid-template-columns:1fr 1fr; gap:20px}
    @media (max-width: 720px){ .grid-2{grid-template-columns:1fr} }
    .card{
      background:var(--card); border:1px solid var(--border); border-radius:var(--radius); padding:20px; box-shadow:var(--shadow)
    }
    figure{margin:0; position:relative; border-radius:var(--radius); overflow:hidden; border:1px solid var(--border)}
    figure figcaption{position:absolute; left:12px; bottom:12px; background:rgba(11,16,32,.7); padding:6px 10px; border-radius:10px; font-size:12px}
    .muted{color:var(--muted)}
    .kpi-row{display:grid; grid-template-columns: repeat(4,1fr); gap:16px; margin-top:8px}
    @media (max-width: 900px){ .kpi-row{grid-template-columns: repeat(2,1fr)} }
    .kpi{background:var(--card); border:1px solid var(--border); border-radius:20px; padding:18px; text-align:center; box-shadow:var(--shadow)}
    .kpi .num{font-size:28px; font-weight:800}
    .quote{border-left:4px solid var(--brand); padding-left:16px; margin:12px 0}
    table{width:100%; border-collapse:separate; border-spacing:0; margin:12px 0 24px; overflow:hidden; border-radius:14px}
    th, td{padding:14px 16px; border-bottom:1px solid var(--border); vertical-align:top}
    th{font-size:14px; text-align:left; color:var(--muted); letter-spacing:.04em; text-transform:uppercase}
    tr:last-child td{border-bottom:none}
    .faq{background:var(--surface); border-top:1px solid var(--border); margin-top:24px}
    details{background:var(--card); border:1px solid var(--border); border-radius:16px; padding:16px; margin:12px 0}
    summary{cursor:pointer; font-weight:700}
    footer{margin-top:36px; text-align:center; color:var(--muted)}
    .stamp{font-size:12px; opacity:.8}
    .hero-stats{display:flex; gap:22px; flex-wrap:wrap; color:#0b1020}
    .hero-stat{background:rgba(255,255,255,.18); padding:10px 14px; border-radius:12px; font-weight:700}
    /* Simple Before/After Slider (no external libs) */
    .ba-wrapper{position:relative; width:100%; max-width:960px; margin:12px auto}
    .ba-viewport{position:relative; width:100%; height:auto}
    .ba-viewport img{display:block; width:100%; height:auto}
    .ba-after{position:absolute; top:0; left:0; height:100%; overflow:hidden}
    .ba-handle{
      position:absolute; top:0; bottom:0; width:4px; background:var(--accent); box-shadow:var(--shadow);
      transform:translateX(-2px); cursor:ew-resize
    }
    .ba-label{position:absolute; top:12px; padding:6px 10px; background:rgba(11,16,32,.7); border-radius:10px; font-size:12px}
    .ba-label.left{left:12px}
    .ba-label.right{right:12px}
    .range{width:100%; margin-top:10px}
    /* Utility */
    .spacer{height:20px}