:root{
      --primary:#1273ea;
      --text:#0f172a;
      --muted:#475569;
      --bg:#f8fafc;
      --card:#ffffff;
      --ok:#0ea5e9;
      --radius:14px;
      --shadow:0 12px 30px rgba(2,6,23,.08);
    }
    *{box-sizing:border-box}
    body{margin:0;background:var(--bg);color:var(--text);
      font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif}
    a{color:var(--primary);text-decoration:none}
    .container{max-width:1100px;margin:0 auto;padding:28px}
    .topbar{background:#ffffff;position:sticky;top:0;z-index:50;border-bottom:1px solid #e5e7eb}
    .nav{display:flex;align-items:center;gap:18px;justify-content:space-between;padding:12px 18px;max-width:1170px;margin:0 auto}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--primary)}
    .brand svg{width:26px;height:26px}
    .menu{display:flex;gap:18px;flex-wrap:wrap;align-items:center}
    .menu a{font-weight:600;color:var(--text);opacity:.9}
    .menu .cta{padding:10px 14px;border-radius:12px;background:var(--primary);color:#fff;font-weight:800}
    .notice{background:#0b5fff;color:#fff;text-align:center;padding:10px 14px;font-weight:700}
    .notice a{color:#fff;text-decoration:underline;font-weight:800}
    h1{margin:18px 0 8px;font-size:42px;line-height:1.1;color:var(--primary);text-align:center}
    .lead{max-width:900px;margin:8px auto 22px;text-align:center;font-size:18px;color:#0b1324}
    .card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px;margin:18px 0}
    .section-title{font-size:28px;margin:6px 0 10px;color:var(--text)}
    .section-sub{font-size:20px;margin:4px 0 12px;color:var(--text)}
    .bullets{display:grid;gap:8px;margin:10px 0 0;padding:0}
    .bullets li{list-style:none;display:flex;gap:.6rem;align-items:flex-start}
    .bullets li:before{content:"✓";color:#10b981;font-weight:900;margin-top:2px}
    details{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:14px 16px;margin:10px 0}
    summary{cursor:pointer;font-weight:700}
    @media (max-width:768px){
      h1{font-size:32px}
      .nav{flex-direction:column;gap:12px}
      .menu{justify-content:center}
    }