:root{
  --bg:#f5f6fa; --card:#fff; --ink:#151827; --ink2:#4a5068; --ink3:#7b8197; --line:#e6e8f0;
  --accent:#5B5FDE; --accent2:#14b8a6; --soft:#eef0ff; --good:#16a34a;
  --r:18px; --shadow:0 1px 2px rgba(20,24,40,.04),0 8px 24px rgba(20,24,40,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none} a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
header.top{position:sticky;top:0;z-index:5;background:rgba(245,246,250,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink)} .brand:hover{text-decoration:none}
.brand img{width:32px;height:32px;border-radius:8px}
nav.links{margin-left:auto;display:flex;gap:22px;font-size:15px} nav.links a{color:var(--ink2)} nav.links a:hover{color:var(--ink);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:999px;font-weight:600;font-size:15px;border:1px solid var(--line);background:#fff;color:var(--ink)}
.btn:hover{text-decoration:none;border-color:#cfd3e2}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff} .btn.primary:hover{background:#4a4ed0}
.hero{padding:72px 0 40px;text-align:center}
.pill{display:inline-block;padding:6px 14px;border-radius:999px;background:var(--soft);color:var(--accent);font-size:13px;font-weight:600;margin-bottom:18px}
h1{font-size:clamp(34px,5vw,56px);line-height:1.08;letter-spacing:-.025em;margin:0 0 18px}
h1 .grad{background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(17px,2vw,20px);color:var(--ink2);max-width:680px;margin:0 auto 28px}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.shot{margin:48px auto 0;border-radius:20px;overflow:hidden;box-shadow:0 30px 80px rgba(40,44,90,.18);border:1px solid var(--line);background:#fff}
section{padding:64px 0}
h2{font-size:clamp(26px,3vw,36px);line-height:1.2;letter-spacing:-.02em;margin:0 0 10px}
.sub{color:var(--ink2);margin:0 0 32px;max-width:680px}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(min(300px,100%),1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow)}
.card h3{margin:10px 0 6px;font-size:18px} .card p{margin:0;color:var(--ink2);font-size:15px}
.ico{width:40px;height:40px;border-radius:12px;background:var(--soft);color:var(--accent);display:grid;place-items:center}
.ico svg{width:22px;height:22px}
.gallery{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(min(460px,100%),1fr))}
.gallery figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.gallery figcaption{padding:14px 18px;font-size:14px;color:var(--ink2)} .gallery figcaption b{color:var(--ink)}
.steps{counter-reset:s;display:grid;gap:14px}
.steps li{list-style:none;counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px 16px 62px;position:relative}
.steps li::before{content:counter(s);position:absolute;left:18px;top:14px;width:30px;height:30px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;display:grid;place-items:center;font-size:14px}
.steps{padding:0;margin:0}
.privacy-band{background:linear-gradient(135deg,#1e1f4b,#2d2f7a);color:#fff;border-radius:24px;padding:40px;display:grid;gap:24px;grid-template-columns:1.2fr 1fr;align-items:center}
.privacy-band p{color:#d6d8f5;margin:0} .privacy-band h2{color:#fff}
.privacy-band ul{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.privacy-band li{background:rgba(255,255,255,.08);border-radius:12px;padding:12px 16px;font-size:15px}
footer{border-top:1px solid var(--line);padding:32px 0 48px;color:var(--ink3);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px;align-items:center} footer nav{margin-left:auto;display:flex;gap:18px;flex-wrap:wrap}
/* document pages */
.doc{max-width:780px;margin:0 auto;padding:56px 20px 40px}
.doc h1{font-size:clamp(30px,4vw,42px)} .doc .meta{color:var(--ink3);margin-bottom:32px}
.doc h2{font-size:22px;margin:36px 0 8px} .doc h3{font-size:17px;margin:22px 0 6px}
.doc p,.doc li{color:var(--ink2)} .doc li{margin:4px 0}
.doc code{background:#eceef6;padding:2px 6px;border-radius:6px;font-size:14px}
.doc pre{background:#151827;color:#e6e8f0;padding:16px;border-radius:12px;overflow:auto;font-size:13.5px}
.note{background:var(--soft);border-left:4px solid var(--accent);border-radius:10px;padding:14px 18px;margin:18px 0;color:var(--ink2)}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:10px 0}
details summary{cursor:pointer;font-weight:600;color:var(--ink)}
table{border-collapse:collapse;width:100%;font-size:15px;margin:12px 0} th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)} th{color:var(--ink3);font-weight:600}
@media (max-width:760px){
  nav.links{display:none}
  .privacy-band{grid-template-columns:1fr;padding:28px}
  .hero{padding-top:48px}
  section{padding:44px 0}
  .gallery{grid-template-columns:1fr}
}
.gallery .wide{grid-column:1/-1}