:root{
  --ink:#0f1b2d;
  --text:#2b3443;
  --muted:#5d6878;
  --line:#e3e7ee;
  --bg:#ffffff;
  --bg-alt:#f5f7fa;
  --accent:#1f5eff;
  --accent-dark:#1747c4;
  --radius:14px;
  --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent)}
a:hover{color:var(--accent-dark)}
h1,h2,h3{color:var(--ink);line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(34px,5.5vw,56px);letter-spacing:-.025em}
h2{font-size:clamp(26px,3.4vw,36px)}
h3{font-size:19px}
p{margin:0 0 1em}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}

/* header */
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);text-decoration:none;letter-spacing:.02em}
.brand img{width:30px;height:30px;border-radius:8px}
.brand small{display:block;font-weight:500;color:var(--muted);font-size:12px;letter-spacing:0}
.nav{display:flex;gap:22px;flex-wrap:wrap}
.nav a{color:var(--text);text-decoration:none;font-size:15px;font-weight:500}
.nav a:hover,.nav a[aria-current]{color:var(--accent)}

/* buttons */
.btn{display:inline-block;padding:12px 22px;border-radius:10px;font-weight:600;font-size:16px;text-decoration:none;border:1px solid transparent;transition:background .15s,border-color .15s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink)}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}

/* sections */
section{padding:88px 0}
.alt{background:var(--bg-alt)}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.09em;color:var(--accent);margin-bottom:12px}
.lead{font-size:clamp(18px,2.1vw,21px);color:var(--muted);max-width:680px}
.section-head{max-width:700px;margin-bottom:44px}
.section-head p{color:var(--muted)}

.hero{padding:104px 0 96px;background:radial-gradient(900px 400px at 85% -10%,#e6edff 0%,transparent 70%)}
.hero h1{max-width:820px}

/* grids & cards */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.card p{color:var(--muted);margin:0}
.card h3{margin-bottom:8px}
.icon{width:44px;height:44px;border-radius:11px;background:#eaf0ff;color:var(--accent);display:grid;place-items:center;margin-bottom:18px}
.icon svg{width:22px;height:22px}

.steps{counter-reset:step}
.step{position:relative;padding-left:56px}
.step::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;width:38px;height:38px;border-radius:50%;background:var(--ink);color:#fff;font-weight:700;display:grid;place-items:center}

/* product cards */
.product{display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:border-color .15s,transform .15s}
.product:hover{border-color:var(--accent);transform:translateY(-2px);color:inherit}
.product .top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.product .top h3{margin:0}
.product .domain{font-size:14px;color:var(--muted)}
.product .more{margin-top:auto;padding-top:18px;font-weight:600;color:var(--accent);font-size:15px}
.mark{width:52px;height:52px;border-radius:13px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:22px;flex:none}
.mark img{width:52px;height:52px;border-radius:13px;object-fit:contain}
.mark-speq{background:#eef4ff}
.mark-speq img{padding:8px}
.product-hero .mark-speq img{padding:13px}

/* product page */
.product-hero{display:flex;gap:28px;align-items:center;flex-wrap:wrap}
.product-hero .mark{width:84px;height:84px;font-size:36px;border-radius:20px}
.product-hero .mark img{width:84px;height:84px;border-radius:20px}
.checklist{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.checklist li{padding-left:32px;position:relative}
.checklist li::before{content:"";position:absolute;left:0;top:6px;width:18px;height:18px;border-radius:50%;background:#eaf0ff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%231f5eff'%3E%3Cpath d='M8.1 13.3 4.8 10l-1.1 1.1 4.4 4.4 9-9-1.1-1.1z'/%3E%3C/svg%3E") center/14px no-repeat}
.links-row{display:flex;gap:18px;flex-wrap:wrap;font-size:15px}
.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:24px}
.breadcrumb a{color:var(--muted)}

/* guarantee */
.guarantee{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:40px;align-items:center;border:2px solid var(--accent);border-radius:20px;padding:48px 40px;background:linear-gradient(180deg,#f3f6ff,#fff)}
.guarantee .lead{margin:0}
.guarantee .checklist strong{color:var(--ink)}
@media (max-width:720px){.guarantee{padding:36px 22px}}

/* CTA */
.cta{background:var(--ink);color:#c9d3e3;border-radius:20px;padding:56px 40px;text-align:center}
.cta h2{color:#fff}
.cta p{max-width:560px;margin:0 auto}
.cta .actions{justify-content:center}
.cta .btn-ghost{background:transparent;color:#fff;border-color:#3a4a63}
.cta .btn-ghost:hover{border-color:#fff}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:48px 0 40px;font-size:15px;color:var(--muted)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px}
.site-footer h4{color:var(--ink);font-size:14px;margin:0 0 10px}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:6px}
.site-footer a{color:var(--muted);text-decoration:none}
.site-footer a:hover{color:var(--accent)}
.copyright{margin-top:36px;font-size:13px}

@media (max-width:720px){
  section{padding:64px 0}
  .hero{padding:72px 0 64px}
  .nav{gap:16px;width:100%;padding-bottom:12px}
  .footer-grid{grid-template-columns:1fr}
  .cta{padding:44px 22px}
}
.copyright + .copyright{margin-top:6px}

/* app sub-page */
.app-block{display:flex;gap:20px;align-items:flex-start}
.app-block img{border-radius:16px;flex:none}
.app-block h1{font-size:26px;margin:0 0 8px}
.app-block p{margin:0 0 12px}
.muted-small{color:var(--muted);font-size:14px;margin-top:24px!important}