:root{
  --navy:#14245A;
  --blue:#1E3A8A;
  --blue-dark:#162C6B;
  --teal:#0F7B87;
  --amber:#D97929;
  --ink:#1B1F27;
  --muted:#5B6472;
  --line:#E2E6EE;
  --bg:#FFFFFF;
  --soft:#F5F7FB;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Inter","Segoe UI",Helvetica,Arial,sans-serif;font-size:16px;line-height:1.65;color:var(--ink);background:var(--bg)}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,.display{font-family:"Anton","Inter",Helvetica,Arial,sans-serif;letter-spacing:.01em;font-weight:400;line-height:1.15;margin:0 0 .5em}
h1{font-size:44px}
h2{font-size:32px}
h3{font-size:20px;font-family:"Inter",Helvetica,Arial,sans-serif;font-weight:600}
p{margin:0 0 1em}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
.small{font-size:13px;color:var(--muted)}
.center{text-align:center}
.mt0{margin-top:0}

/* header */
.topbar{background:var(--navy);color:#fff;font-size:13px}
.topbar .wrap{display:flex;justify-content:flex-end;gap:22px;padding:8px 24px;flex-wrap:wrap}
.topbar a{color:#C9D4F2}
header.site{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:74px;gap:20px}
header.site img.brand{height:34px;width:auto}
nav.main{display:flex;gap:26px;align-items:center}
nav.main a{color:var(--navy);font-size:15px;font-weight:500;padding:6px 0;border-bottom:2px solid transparent}
nav.main a:hover,nav.main a.active{color:var(--blue);border-bottom-color:var(--amber);text-decoration:none}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:6px;padding:8px 10px;font-size:18px;cursor:pointer;color:var(--navy)}

/* buttons */
.btn{display:inline-block;background:var(--blue);color:#fff;padding:12px 24px;border-radius:4px;font-weight:600;font-size:15px;border:1px solid var(--blue)}
.btn:hover{background:var(--blue-dark);text-decoration:none}
.btn.ghost{background:transparent;color:var(--blue)}
.btn.ghost:hover{background:var(--soft);text-decoration:none}
.btn.small{padding:8px 16px;font-size:14px}

/* hero */
.hero{background:linear-gradient(0deg,#0F1C46 0%,#162C6B 100%);color:#fff;padding:88px 0 76px}
.hero h1{color:#fff;font-size:52px;max-width:760px}
.hero p.lead{font-size:19px;color:#C9D4F2;max-width:640px;margin-bottom:26px}
.hero .tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.hero .tags span{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#DCE5FA;padding:6px 14px;border-radius:20px;font-size:13px}

/* sections */
section{padding:72px 0}
section.soft{background:var(--soft)}
.grid{display:grid;gap:28px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:26px}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);margin-bottom:0;font-size:15px}
.num{font-family:"Anton";font-size:34px;color:var(--amber);line-height:1}

/* product table */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 22px}
.filters button{background:#fff;border:1px solid var(--line);border-radius:20px;padding:8px 16px;font-size:14px;cursor:pointer;color:var(--navy)}
.filters button.active{background:var(--blue);border-color:var(--blue);color:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:15px}
table.spec th,table.spec td{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left}
table.spec th{background:var(--soft);color:var(--navy);font-weight:600;font-size:14px}
table.spec td.model{font-family:ui-monospace,"SFMono-Regular",Consolas,monospace;font-weight:600;color:var(--blue)}
table.spec tr:hover{background:#FAFBFE}
.plist{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.pitem{border:1px solid var(--line);border-radius:6px;padding:20px;background:#fff}
.pitem .m{font-family:ui-monospace,Consolas,monospace;font-size:17px;font-weight:700;color:var(--blue)}
.pitem .d{font-size:14px;color:var(--muted);margin:6px 0 12px}
.chip{display:inline-block;background:var(--soft);border:1px solid var(--line);color:var(--navy);font-size:12px;padding:3px 9px;border-radius:3px;margin:0 6px 6px 0}

/* forms */
form.contact label{display:block;font-size:14px;font-weight:600;color:var(--navy);margin:0 0 6px}
form.contact input,form.contact textarea,form.contact select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:4px;font-size:15px;font-family:inherit;margin-bottom:16px;background:#fff}
form.contact input:focus,form.contact textarea:focus{outline:2px solid var(--blue);outline-offset:-1px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.note{background:var(--soft);border-left:3px solid var(--teal);padding:14px 16px;font-size:14px;color:var(--navy);margin:18px 0}
.alert-ok{background:#EAF3DE;border-left:3px solid #639922;padding:14px 16px;font-size:15px}
.alert-err{background:#FCEBEB;border-left:3px solid #E24B4A;padding:14px 16px;font-size:15px}

/* footer */
footer.site{background:var(--navy);color:#C9D4F2;padding:58px 0 26px;font-size:14px}
footer.site h4{color:#fff;font-size:15px;margin:0 0 14px;font-weight:600}
footer.site img.brand{height:30px;width:auto;margin-bottom:16px}
footer.site a{color:#C9D4F2}
footer.site a:hover{color:#fff}
.fcols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
.fcols ul{list-style:none;margin:0;padding:0}
.fcols li{margin:0 0 8px}
.legal{border-top:1px solid rgba(255,255,255,.15);margin-top:34px;padding-top:18px;font-size:13px;color:#93A3C8}

@media (max-width:900px){
  .g3,.g4,.g2,.fcols,.row2{grid-template-columns:1fr}
  h1{font-size:34px}.hero h1{font-size:36px}h2{font-size:26px}
  nav.main{display:none;position:absolute;top:74px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;border-bottom:1px solid var(--line);gap:14px}
  nav.main.open{display:flex}
  .burger{display:block}
  section{padding:52px 0}
}