/* ========== Design Tokens ========== */
:root{
    --bg:#0b1220;--surface:#ffffff;--surface-2:#f6f8fb;
    --text:#0f172a;--muted:#64748b;--primary:#0b5cff;--ring:#b9ccff;
    --radius:14px;--shadow:0 10px 30px rgba(2,6,23,.08);--wrap:1100px;
  }
  *{box-sizing:border-box}html,body{margin:0}
  body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Helvetica Neue",Arial,sans-serif;color:var(--text);line-height:1.65;background:#fff}
  
  /* Layout */
  .container{max-width:var(--wrap);margin:0 auto;padding:0 1.2rem}
  .section{padding:3rem 0}
  .section.alt{background:var(--surface-2)}
  h1,h2,h3{line-height:1.2;margin:.2rem 0 1rem}
  .lead{color:#eaf1ff;opacity:.95;margin:.5rem 0 1.2rem}
  
  /* Hero */
  .hero{color:#fff;text-align:center;position:relative;overflow:hidden;
    background:linear-gradient(135deg,#0f172a 0%,#182a4b 60%,#0b5cff 120%);padding:4.8rem 0 3.8rem}
  .badge{display:inline-block;background:rgba(255,255,255,.14);backdrop-filter:saturate(140%) blur(6px);
    border:1px solid rgba(255,255,255,.25);color:#fff;padding:.35rem .6rem;border-radius:999px;font-size:.85rem}
  .hero h1{font-size:clamp(1.8rem,3.2vw,2.6rem);margin-top:.6rem}
  
  /* Buttons */
  .btn{display:inline-block;padding:.8rem 1.05rem;border-radius:10px;font-weight:700;
    text-decoration:none;transition:.18s ease;box-shadow:0 4px 20px rgba(11,92,255,.18)}
  .btn-primary{background:var(--primary);color:#fff}
  .btn-primary:hover{filter:brightness(.95);transform:translateY(-1px)}
  .btn-ghost{border:1px solid #a9c1ff;color:#fff}
  .btn-ghost:hover{background:rgba(255,255,255,.12)}
  
  /* Grid & Cards */
  .grid{display:grid;gap:1rem}
  @media(min-width:880px){.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-2{grid-template-columns:repeat(2,1fr)}}
  .card{background:var(--surface);border:1px solid #e8ecf5;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
  .card .pad{padding:1.1rem 1.1rem}
  .card h3{margin:.4rem 0 .25rem}
  .muted{color:var(--muted)} .small{font-size:.92rem}
  
  /* Feature list */
  .features{display:grid;gap:.6rem;margin:1rem 0}
  @media(min-width:700px){.features{grid-template-columns:repeat(2,1fr)}}
  .feature{display:flex;gap:.6rem;align-items:flex-start;background:#fff;border:1px solid #e9edf7;border-radius:12px;padding:.7rem 1rem}
  .feature b{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;
    background:#eef4ff;color:#0b5cff;font-size:.95rem}
  
  /* CTA band */
  .cta{background:linear-gradient(135deg,#0b5cff 0%,#4378ff 100%);color:#fff;border-radius:16px;
    padding:1.2rem;display:flex;flex-wrap:wrap;gap:.8rem;align-items:center;justify-content:space-between}
  .cta p{margin:0}
  
  /* Footer */
  footer{background:#0f172a;color:#cbd5e1;margin-top:2.2rem}
  footer .container{padding:1.6rem 1.2rem}
  footer a{color:#a9c1ff;text-decoration:none}
  footer a:hover{text-decoration:underline}
  
  /* Accessibility */
  a:focus-visible,.btn:focus-visible{outline:3px solid var(--ring);outline-offset:2px;border-radius:10px}