:root{
    --ink:#0b1220; --ink-2:#334155; --muted:#64748b; --line:#e2e8f0;
    --bg:#ffffff; --bg-soft:#f5f8ff; --navy:#0a1733; --blue:#2563eb; --blue-2:#1d4ed8; --glow:#60a5fa;
    --green:#0f9d58; --radius:14px;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
  a{color:var(--blue)}
  .wrap{max-width:1120px;margin:0 auto;padding:0 20px}
  /* nav */
  header.nav{position:sticky;top:0;z-index:20;background:rgba(10,23,51,.92);backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.08)}
  .nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
  .logo{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:800;letter-spacing:-.02em;font-size:19px}
  .logo-mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--glow),var(--blue));display:grid;place-items:center;box-shadow:0 0 18px rgba(96,165,250,.55)}
  .logo-mark svg{width:18px;height:18px}
  .logo span.ai{color:var(--glow)}
  .nav-links{display:flex;gap:26px;align-items:center}
  .nav-links a{color:#cbd5e1;text-decoration:none;font-size:15px;font-weight:500}
  .nav-links a:hover{color:#fff}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:13px 20px;font-weight:700;font-size:16px;text-decoration:none;border:0;cursor:pointer;transition:transform .12s ease,background .15s ease}
  .btn:active{transform:translateY(1px)}
  .btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 20px rgba(37,99,235,.35)}
  .btn-primary:hover{background:var(--blue-2)}
  .btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.35)}
  .btn-ghost:hover{border-color:#fff}
  .btn-sm{padding:9px 14px;font-size:14px}
  /* hero */
  .hero{background:radial-gradient(1200px 500px at 70% -10%,rgba(96,165,250,.28),transparent 60%),var(--navy);color:#fff;padding:84px 0 72px}
  .eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--glow);background:rgba(96,165,250,.12);border:1px solid rgba(96,165,250,.3);padding:6px 12px;border-radius:999px}
  .hero h1{font-size:clamp(34px,5.4vw,58px);line-height:1.08;letter-spacing:-.03em;margin:18px 0 18px;font-weight:800;max-width:15ch}
  .hero h1 em{font-style:normal;color:var(--glow)}
  .hero p.lead{font-size:clamp(17px,2vw,20px);color:#cbd5e1;max-width:60ch;margin:0 0 30px}
  .hero-ctas{display:flex;gap:12px;flex-wrap:wrap}
  .trust{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:48px}
  .trust div{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:14px 16px;font-size:14px;color:#e2e8f0}
  .trust b{display:block;color:#fff;font-size:16px}
  /* sections */
  section{padding:80px 0}
  section.soft{background:var(--bg-soft)}
  .kicker{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--blue)}
  h2{font-size:clamp(28px,3.6vw,40px);line-height:1.15;letter-spacing:-.02em;margin:10px 0 14px}
  .sub{color:var(--ink-2);font-size:18px;max-width:64ch;margin:0 0 36px}
  .grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
  .card h3{margin:0 0 8px;font-size:19px;letter-spacing:-.01em}
  .card p{margin:0;color:var(--ink-2)}
  .num{width:36px;height:36px;border-radius:10px;background:var(--navy);color:var(--glow);display:grid;place-items:center;font-weight:800;margin-bottom:14px}
  .tag{display:inline-block;font-size:12px;font-weight:700;color:var(--blue);background:#eaf1ff;border-radius:6px;padding:3px 8px;margin-bottom:10px}
  ul.clean{list-style:none;padding:0;margin:0}
  ul.clean li{padding:6px 0 6px 28px;position:relative;color:var(--ink-2)}
  ul.clean li::before{content:"";position:absolute;left:0;top:13px;width:16px;height:9px;border-left:3px solid var(--green);border-bottom:3px solid var(--green);transform:rotate(-45deg)}
  /* offer */
  .offer{background:var(--navy);color:#fff;border-radius:22px;padding:40px;display:grid;grid-template-columns:1.25fr .9fr;gap:36px;box-shadow:0 30px 60px -30px rgba(10,23,51,.6)}
  .offer h3{font-size:24px;margin:0 0 6px}
  .offer .muted{color:#94a3b8}
  .offer ul.clean li{color:#e2e8f0}
  .price{background:rgba(255,255,255,.06);border:1px solid rgba(96,165,250,.35);border-radius:16px;padding:26px}
  .price .big{font-size:56px;font-weight:800;letter-spacing:-.03em;line-height:1;color:#fff}
  .price .big small{font-size:18px;font-weight:600;color:#cbd5e1}
  .price p{color:#cbd5e1;margin:10px 0 18px}
  .example{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);font-size:14px;color:#cbd5e1}
  .guarantee{display:flex;gap:14px;align-items:flex-start;background:rgba(15,157,88,.12);border:1px solid rgba(15,157,88,.45);border-radius:12px;padding:14px 16px;margin-top:14px}
  .guarantee svg{flex:none;margin-top:2px}
  /* checklist */
  .checklist{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
  .doc{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 20px 40px -24px rgba(15,23,42,.35)}
  .doc .row{display:flex;justify-content:space-between;border-bottom:1px dashed var(--line);padding:9px 0;font-size:14px;color:var(--ink-2)}
  .doc .row b{color:var(--ink)}
  /* form */
  .form-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
  form{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:0 24px 48px -28px rgba(15,23,42,.35)}
  .field{margin-bottom:16px}
  .field label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
  .field input,.field select,.field textarea{width:100%;font:inherit;font-size:16px;padding:12px 14px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;color:var(--ink)}
  .field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--glow);border-color:var(--blue)}
  .row-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .consent{display:flex;gap:12px;align-items:flex-start;background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:14px;font-size:14px;color:var(--ink-2);margin:6px 0 18px}
  .consent input{margin-top:3px;width:18px;height:18px;flex:none}
  .small{font-size:13px;color:var(--muted)}
  .msg{display:none;margin-top:14px;padding:14px;border-radius:10px;font-size:15px}
  .msg.ok{display:block;background:#e7f7ef;color:#0b6b3a;border:1px solid #b7e4cb}
  .msg.err{display:block;background:#fdecec;color:#9b1c1c;border:1px solid #f5c2c2}
  /* faq */
  details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:12px}
  summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
  summary::-webkit-details-marker{display:none}
  summary::after{content:"+";color:var(--blue);font-weight:800}
  details[open] summary::after{content:"–"}
  details p{color:var(--ink-2);margin:10px 0 0}
  footer{background:var(--navy);color:#94a3b8;padding:36px 0;font-size:14px}
  footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
  footer a{color:#cbd5e1}
  @media (max-width:900px){
    .nav-links a:not(.btn){display:none}
    .trust{grid-template-columns:1fr 1fr}
    .grid-3,.grid-2,.offer,.checklist,.form-wrap{grid-template-columns:1fr}
    .offer{padding:26px}
    section{padding:60px 0}
  }
  @media (max-width:480px){ .row-2{grid-template-columns:1fr} .trust{grid-template-columns:1fr} }

  /* sub-pages */
  .page-hero{background:radial-gradient(1000px 400px at 70% -20%,rgba(96,165,250,.25),transparent 60%),var(--navy);color:#fff;padding:64px 0 56px}
  .page-hero h1{font-size:clamp(32px,4.6vw,48px);line-height:1.1;letter-spacing:-.03em;margin:14px 0 12px;max-width:20ch}
  .page-hero p{color:#cbd5e1;font-size:19px;max-width:62ch;margin:0}
  .prose{max-width:780px}
  .prose h2{font-size:26px;margin:40px 0 10px}
  .prose p,.prose li{color:var(--ink-2)}
  .cta-band{background:var(--navy);color:#fff;border-radius:20px;padding:36px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
  .cta-band h2{margin:0 0 6px;font-size:28px}
  .cta-band p{margin:0;color:#cbd5e1}
  .nav-links a.active{color:#fff}
  .offer-photo{border-radius:16px;overflow:hidden;min-height:420px;background:#12224a}
  .offer-photo img{display:block;width:100%;height:100%;object-fit:cover}