:root{
  --ink:#0E1A2B; --accent:#2E75B6; --accent-2:#4C9AFF;
  --bg:#fff; --soft:#F5F7FA; --line:#E4E9F0; --muted:#5C6B80;
  --radius:14px; --shadow:0 10px 30px rgba(14,26,43,.08); --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:700}
h1,h2,h3{line-height:1.2;margin:0 0 14px;letter-spacing:-.01em}
h1{font-size:clamp(32px,4.6vw,54px);font-weight:750}
h2{font-size:clamp(24px,3vw,34px);font-weight:720}
h3{font-size:19px;font-weight:700}
p{margin:0 0 16px;color:var(--muted)}
.lead{font-size:18px;color:#42536B;max-width:680px}
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:26px;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.02em;font-size:17px;flex:0 0 auto}
.logo .mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  display:grid;place-items:center;color:#fff;font-size:14px;font-weight:800}
.logo small{display:block;font-size:10.5px;font-weight:600;color:var(--muted);letter-spacing:.04em;line-height:1.1;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:170px}
.nav-main{display:flex;align-items:center;gap:26px;list-style:none;margin:0 auto;padding:0;
  font-size:14.5px;font-weight:500;white-space:nowrap}
.nav-main a,.nav-main .dd-btn{color:#33455E;padding:8px 0;border-bottom:2px solid transparent}
.nav-main a:hover,.nav-main .dd-btn:hover{color:var(--accent);border-color:var(--accent)}
.nav .right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav .btn{white-space:nowrap}
.dd{position:relative}
.dd-btn{background:none;border:0;border-bottom:2px solid transparent;font:inherit;font-weight:500;
  cursor:pointer;display:flex;align-items:center;gap:6px;padding:8px 0}
.caret{font-size:10px;color:var(--muted);transition:.15s;display:inline-block}
.dd.open .caret{transform:rotate(180deg)}
.dd-menu{position:absolute;top:calc(100% + 26px);left:-18px;min-width:268px;background:#fff;
  border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:8px;display:none;z-index:70}
.dd-menu::before{content:"";position:absolute;top:-26px;left:0;right:0;height:26px}
.dd.open .dd-menu{display:block}
.dd-menu a{display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:10px 13px;border-radius:9px;font-size:14px;color:#33455E;border:0}
.dd-menu a:hover{background:var(--soft);color:var(--accent);border:0}
.dd-menu a span{font-size:11.5px;font-weight:600;color:#8593A6}
.dd-menu .all{border-top:1px solid var(--line);margin-top:6px;padding-top:10px;font-weight:700;color:var(--accent)}
.lang{display:flex;border:1px solid var(--line);border-radius:9px;overflow:hidden;font-size:13px;font-weight:700}
.lang a{padding:6px 10px;color:#4A5B73}
.lang a.on{background:var(--ink);color:#fff}
.burger{display:none;background:none;border:0;font-size:24px;cursor:pointer}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:10px;
  font-weight:650;font-size:14.5px;border:1px solid transparent;cursor:pointer;transition:.18s}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(46,117,182,.28)}
.btn-primary:hover{background:#25629B;transform:translateY(-1px)}
.btn-wa{background:#25D366;color:#fff;box-shadow:0 6px 18px rgba(37,211,102,.28)}
.btn-wa:hover{background:#1EBE5B;transform:translateY(-1px)}
.btn-ghost{border-color:#CBD5E1;color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{padding:9px 15px;font-size:13.5px}
.hero{padding:72px 0 60px;background:radial-gradient(900px 420px at 85% -10%,#E8F1FB 0%,transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 30px}
.hero-stats{display:flex;gap:34px;flex-wrap:wrap;padding-top:22px;border-top:1px solid var(--line)}
.hero-stats b{display:block;font-size:26px;line-height:1.1}
.hero-stats span{font-size:12.5px;color:var(--muted)}
.hero-visual{border-radius:20px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--soft)}
.trust .wrap{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:16px 24px;justify-content:center}
.trust span{font-size:12px;font-weight:700;letter-spacing:.07em;color:#64748B;
  border:1px solid var(--line);background:#fff;padding:6px 12px;border-radius:999px}
section.pad{padding:72px 0}
.sec-head{max-width:680px;margin-bottom:34px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;
  transition:.2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#CFE0F2}
.card img{aspect-ratio:4/3;object-fit:contain;width:100%;padding:10px;background:#fff;border-bottom:1px solid var(--line)}
.card .body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.card h3{margin-bottom:6px;font-size:16.5px}
.card .model{font-size:11.5px;font-weight:700;color:var(--accent);letter-spacing:.06em;margin-bottom:4px}
.card p{font-size:13.5px;margin-bottom:12px}
.card .more{font-size:13px;font-weight:700;color:var(--accent);margin-top:auto}
.card .price{font-size:15px;font-weight:800;color:var(--ink);margin:2px 0 8px}
.card .price small{font-size:11.5px;font-weight:600;color:var(--muted)}
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.why .item{padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.why .num{width:30px;height:30px;border-radius:8px;background:#EAF2FB;color:var(--accent);
  display:grid;place-items:center;font-weight:800;font-size:13px;margin-bottom:14px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{padding-top:18px;border-top:3px solid var(--accent)}
.step .n{font-size:12px;font-weight:800;color:var(--accent);letter-spacing:.12em}
.step h3{font-size:16px;margin:8px 0 6px}
.step p{font-size:13.5px}
.strip{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:14px}
.strip img{border-radius:var(--radius);height:100%;object-fit:cover;border:1px solid var(--line)}
.band{background:linear-gradient(120deg,#16263D,#1E3A5F 60%,#2E75B6);color:#fff;border-radius:20px;
  padding:44px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.band h2{color:#fff;margin-bottom:8px}
.band p{color:rgba(255,255,255,.72);margin:0;max-width:560px}
.band .btn-primary{background:#fff;color:#16263D;box-shadow:none}
.band .btn-primary:hover{background:#EAF2FB}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.chip{font-size:13px;padding:7px 14px;border:1px solid var(--line);border-radius:999px;color:#4A5B73;background:#fff}
.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.products{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.detail{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.gallery>img{border-radius:var(--radius);border:1px solid var(--line);width:100%;aspect-ratio:1/1;
  object-fit:contain;background:#F7F9FC;padding:26px}
.thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:10px}
.thumbs img{border-radius:10px;border:1px solid var(--line);aspect-ratio:1/1;object-fit:contain;
  background:#F7F9FC;padding:6px}
table.spec{width:100%;border-collapse:collapse;margin:16px 0 24px;font-size:14px}
table.spec td{padding:11px 0;border-bottom:1px solid var(--line);vertical-align:top}
table.spec td:first-child{color:var(--muted);width:40%}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:0 0 24px}
.fact{border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:var(--soft)}
.fact span{display:block;font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.fact b{font-size:16px;display:block;margin-top:4px}
.fact.price b{color:#127A46}
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form .full{grid-column:1/-1}
label{font-size:12.5px;font-weight:700;color:#33455E;display:block;margin-bottom:6px}
input,textarea,select{width:100%;padding:11px 13px;border:1px solid #D6DEE9;border-radius:9px;
  font-family:inherit;font-size:14px;background:#fff;color:var(--ink)}
input:focus,textarea:focus,select:focus{outline:2px solid #BFD9F3;border-color:var(--accent)}
textarea{min-height:120px;resize:vertical}
.note{font-size:12px;color:#8593A6;margin-top:10px}
footer{background:var(--ink);color:#C6D2E1;margin-top:72px;padding:56px 0 26px;font-size:14px}
footer h4{color:#fff;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin:0 0 14px}
.fgrid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px}
footer a{color:#C6D2E1;display:block;margin-bottom:9px}
footer a:hover{color:#fff}
.fbottom{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#8593A6}
.wa{position:fixed;right:22px;bottom:22px;z-index:60;display:flex;align-items:center;gap:9px;
  background:#25D366;color:#fff;padding:12px 17px;border-radius:999px;font-weight:700;font-size:14px;
  box-shadow:0 10px 26px rgba(37,211,102,.35)}
.wa:hover{transform:translateY(-2px)}
@media (min-width:961px){ .wa{display:none} }
@media (max-width:960px){
  .hero-grid,.detail{grid-template-columns:1fr;gap:32px}
  .cards,.why,.steps,.products{grid-template-columns:repeat(2,1fr)}
  .strip{grid-template-columns:1fr 1fr}
  .fgrid{grid-template-columns:1fr 1fr}
  .nav-main{display:none}
  .burger{display:block}
  .nav .btn-wa{display:none}
  .nav-main.open{display:flex;position:absolute;top:72px;left:0;right:0;background:#fff;margin:0;
    flex-direction:column;align-items:stretch;padding:14px 24px 20px;border-bottom:1px solid var(--line);gap:4px;
    box-shadow:var(--shadow)}
  .nav-main.open li{border-bottom:1px solid var(--soft);padding:2px 0}
  .nav-main.open .dd-btn{justify-content:space-between;width:100%;padding:12px 0}
  .nav-main.open .dd-menu{position:static;display:none;box-shadow:none;border:0;padding:4px 0 8px;min-width:0}
  .nav-main.open .dd.open .dd-menu{display:block}
  .nav-main.open .dd-menu a{padding:9px 12px}
  .nav-main.open .dd-menu .all{display:none}
  .dd:hover .dd-menu{display:none}
  .dd.open .dd-menu{display:block}
}
@media (max-width:620px){
  .cards,.why,.steps,.products,.form,.strip,.facts{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
  .band{padding:28px}
  section.pad{padding:50px 0}
}