:root{
  --red:#c0392b;--red-dark:#a93226;--ink:#1a1a1a;--muted:#5a5f66;
  --line:#e5e7eb;--bg:#f6f7f9;--white:#fff;--max:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;color:var(--ink);background:var(--white);line-height:1.55;font-size:17px}
img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}
.wrap{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.topbar{background:#f0f2f5;font-size:13px;color:#3d4550}
.topbar .wrap{display:flex;gap:18px;padding:8px 0;flex-wrap:wrap}
.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-row{display:flex;align-items:center;gap:16px;padding:12px 0;flex-wrap:wrap}
.logo{font-weight:800;font-size:22px;letter-spacing:.04em}
.logo span{color:var(--red)}
.contacts{margin-left:auto;display:flex;gap:14px;align-items:center;font-size:14px;font-weight:700;flex-wrap:wrap}
.contacts a:hover{color:var(--red)}
.btn{background:var(--red);color:#fff!important;border:0;border-radius:4px;padding:12px 18px;font:inherit;font-weight:700;display:inline-block;cursor:pointer}
.btn:hover{background:var(--red-dark)}.btn-outline{background:transparent;border:2px solid #fff;color:#fff!important}
.nav{display:flex;gap:6px;flex-wrap:wrap;padding:0 0 12px}
.nav a{background:#1c1c1c;color:#fff;padding:8px 12px;border-radius:2px;font-size:13px;font-weight:600}
.nav a:hover,.nav a.is-active{background:var(--red)}
.burger{display:none;background:transparent;border:1px solid var(--line);padding:8px 10px;border-radius:4px;cursor:pointer}
.hero{min-height:460px;color:#fff;background:#1c1c1c center/cover no-repeat;display:flex;align-items:flex-end;position:relative}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,12,14,.88),rgba(10,12,14,.35))}
.hero .wrap{position:relative;padding:64px 0;max-width:780px}
.kicker{color:#e7b3ae;letter-spacing:.14em;font-size:12px;font-weight:800;text-transform:uppercase}
h1{font-size:clamp(32px,5vw,46px);line-height:1.08;margin:10px 0 14px}
h2{font-size:clamp(24px,3vw,32px);margin:0 0 16px;line-height:1.2}
h3{font-size:20px;margin:22px 0 10px}
section{padding:48px 0}
.lead{font-size:19px;color:#333;max-width:46rem}
.prose{max-width:52rem;display:grid;gap:14px}
.prose p,.prose li{margin:0}.prose ul,.prose ol{margin:0;padding-left:22px}.prose li{margin:7px 0}
.media-break{margin:8px 0 4px;border-radius:8px;overflow:hidden;border:1px solid var(--line);background:#eee}
.media-break img{width:100%;aspect-ratio:16/9;object-fit:cover}
.media-caption{font-size:13px;color:var(--muted);margin-top:6px}
.grid-2{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:start}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.card{background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;display:flex;flex-direction:column}
.card img{aspect-ratio:4/3;object-fit:cover;width:100%}
.card .body{padding:16px;display:grid;gap:8px}
.card h3{margin:0;font-size:18px}
.chip-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.chip{background:var(--bg);border:1px solid var(--line);padding:14px;border-radius:6px}
.chip b{display:block;margin-bottom:6px}
.chip p{margin:0;font-size:14px;color:#444}
.bg{background:var(--bg)}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:6px;background:#fff}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{border:1px solid var(--line);padding:11px 12px;text-align:left;vertical-align:top}
th{background:#f3f5f7;font-weight:700}
.note{font-size:14px;color:var(--muted)}
.faq details{border:1px solid var(--line);padding:12px 14px;margin:0 0 8px;background:#fff;border-radius:6px}
.faq summary{cursor:pointer;font-weight:700}
.faq details p{margin:10px 0 0;color:#333}
.form-box{background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px;display:grid;gap:10px;max-width:640px}
.form-box label{display:grid;gap:6px;font-size:14px;font-weight:600}
.form-box input,.form-box select,.form-box textarea{width:100%;padding:12px;border:1px solid #d5d8dc;border-radius:4px;font:inherit;font-weight:400}
.form-box textarea{min-height:100px;resize:vertical}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:13px;color:#333}
.check input{width:auto;margin-top:3px}
.form-msg{display:none;padding:10px 12px;border-radius:4px;font-size:14px}
.form-msg.ok{display:block;background:#e8f6ec;color:#1e6b3a}
.form-msg.err{display:block;background:#fdecea;color:#8a1f14}
.footer{background:#1c1c1c;color:#fff;padding:36px 0 18px}
.footer a{color:#fff}.footer a:hover{color:#e7b3ae}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px;margin-bottom:24px}
.footer b{display:block;margin-bottom:10px}
.footer p{margin:0 0 8px;color:#c9ced4;font-size:14px}
.footline{border-top:1px solid #333;padding-top:14px;font-size:13px;color:#9aa1a9}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.step{background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px}
.step .n{color:var(--red);font-weight:800;font-size:13px;letter-spacing:.08em}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.compare .box{background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.gallery .media-break{margin:0}
@media(max-width:900px){
  .grid-2,.grid-3,.grid-4,.chip-row,.steps,.compare,.gallery,.footer-grid{grid-template-columns:1fr}
  .nav{display:none}.nav.open{display:flex}
  .burger{display:inline-block}
  .contacts{margin-left:0;width:100%}
  .hero{min-height:380px}
}

.board{
  display:grid;
  gap:42px;
  padding-left:max(16px, calc((100% - var(--max)) / 2));
  padding-right:max(16px, calc((100% - var(--max)) / 2));
}
.pair{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:28px;
  align-items:stretch;
  min-height:320px;
}
.pair:nth-child(even){direction:rtl}
.pair:nth-child(even) > *{direction:ltr}
.viz{
  margin:0;
  position:relative;
  height:100%;
  min-height:320px;
  border-radius:8px;
  overflow:hidden;
  border:1px solid var(--line);
  background:#eceff3;
}
.viz img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  max-width:none;
  object-fit:cover;
  display:block;
}
.copy{
  display:flex;
  flex-direction:column;
  justify-content:center;
  min-width:0;
}
.copy p{margin:0 0 12px}
.copy p:last-child{margin:0}
.copy h2,.copy h3{margin-top:0}
.child-links{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.child-links .card{padding:0}
.child-links .body{padding:18px}
.uplink{margin:0 0 8px;font-weight:700}
.uplink a{color:var(--red)}
@media(max-width:900px){
  .child-links{grid-template-columns:1fr}
}
@media(max-width:800px){
  .board{gap:28px}
  .pair,.pair:nth-child(even){
    grid-template-columns:1fr;
    min-height:0;
    direction:ltr;
    gap:14px;
  }
  .viz{height:240px;min-height:240px}
}