/* Senger Steel — EN standalone, minimal industrial */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#16222e; --ink2:#3d4c5a; --muted:#71808f;
  --brand:#0f4c81; --brand2:#1c74b8; --accent:#f5a623;
  --line:#e2e8ee; --soft:#f4f7fa; --radius:12px;
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.65;font-size:15.5px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}

/* header */
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.hd .wrap{display:flex;align-items:center;gap:26px;height:64px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;letter-spacing:.02em}
.logo img{width:34px;height:34px}
.logo small{display:block;font-weight:500;font-size:10.5px;color:var(--muted);letter-spacing:.14em;margin-top:-3px}
nav.main{display:flex;gap:22px;margin-left:auto;align-items:center}
nav.main a{color:var(--ink2);font-weight:600;font-size:14.5px}
nav.main a.on,nav.main a:hover{color:var(--brand);text-decoration:none}
.hd .wa{background:#25d366;color:#fff;padding:8px 15px;border-radius:8px;font-weight:700;font-size:13.5px;white-space:nowrap}
.hd .wa:hover{text-decoration:none;filter:brightness(1.05)}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 11px;font-size:17px;color:var(--ink2)}

/* hero */
.hero{position:relative;min-height:520px;display:flex;align-items:center;color:#fff}
.hero .bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero .shade{position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,20,33,.88) 8%,rgba(8,20,33,.55) 55%,rgba(8,20,33,.15))}
.hero .wrap{position:relative;padding-top:56px;padding-bottom:56px}
.hero h1{font-size:clamp(28px,4.4vw,46px);line-height:1.18;max-width:15em;letter-spacing:-.01em}
.hero p{margin:16px 0 26px;font-size:clamp(15px,1.6vw,18px);color:#dbe6ef;max-width:36em}
.btn{display:inline-block;background:var(--accent);color:#1a1a1a;font-weight:800;padding:13px 26px;border-radius:9px;font-size:15px;border:0;cursor:pointer}
.btn:hover{text-decoration:none;filter:brightness(1.06)}
.btn.ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.65);margin-left:12px}
.btn.blue{background:var(--brand);color:#fff}
.btn.wa-inline{background:#25d366;color:#fff}

/* sections */
section{padding:64px 0}
.kicker{font-size:12.5px;font-weight:800;letter-spacing:.16em;color:var(--brand2);text-transform:uppercase;margin-bottom:10px}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.25;letter-spacing:-.01em}
.sub{color:var(--ink2);max-width:46em;margin-top:10px}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* product cards */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .18s,transform .18s}
.card:hover{box-shadow:0 10px 28px rgba(15,42,68,.13);transform:translateY(-2px)}
.card .ph{aspect-ratio:3/2;overflow:hidden}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.card:hover .ph img{transform:scale(1.035)}
.card .bd{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.card h3{font-size:16.5px;line-height:1.35}
.card p{font-size:13.8px;color:var(--ink2);flex:1}
.card .more{font-weight:700;font-size:13.5px;color:var(--brand)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;text-align:center}
.stat b{display:block;font-size:clamp(24px,2.6vw,34px);color:var(--brand);letter-spacing:-.02em}
.stat span{font-size:13px;color:var(--ink2)}

/* split */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}
.split img{border-radius:var(--radius);border:1px solid var(--line)}

/* cert strip */
.certs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cert{border:1.5px dashed #c7d6e3;border-radius:var(--radius);padding:20px;text-align:center;background:var(--soft)}
.cert b{display:block;color:var(--brand);font-size:17px;margin-bottom:5px}
.cert span{font-size:13px;color:var(--ink2)}

/* ticks */
.ticks{list-style:none;display:grid;gap:9px;margin-top:18px}
.ticks li{padding-left:28px;position:relative;color:var(--ink2)}
.ticks li::before{content:"";position:absolute;left:0;top:5px;width:16px;height:16px;border-radius:50%;background:var(--brand) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="10" viewBox="0 0 10 10"><path d="M1.5 5.5l2.4 2.4L8.6 2.6" fill="none" stroke="white" stroke-width="1.8" stroke-linecap="round"/></svg>') center/10px no-repeat}

/* spec table */
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
table.spec{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff;min-width:560px}
table.spec th,table.spec td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.spec tr:last-child th,table.spec tr:last-child td{border-bottom:0}
table.spec th{width:170px;background:#eef4f8;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink2)}
table.spec td{color:var(--ink2)}
.note{font-size:12.8px;color:var(--muted);margin-top:10px}

/* article */
.article{max-width:780px}
.article p{margin-bottom:15px;color:var(--ink2)}
.article h2{font-size:21px;margin:30px 0 10px}
.article h3{font-size:17px;margin:22px 0 8px;color:var(--ink)}
.article ul{margin:0 0 15px 20px;color:var(--ink2)}
.article li{margin-bottom:6px}
.meta{font-size:13px;color:var(--muted);margin:6px 0 24px}

/* crumb */
.crumb{font-size:13px;color:var(--muted);padding:16px 0 0}
.crumb a{color:var(--muted)}
.crumb .sep{margin:0 7px;color:#c3d2de}

/* page head */
.phead{padding:38px 0 10px}
.phead h1{font-size:clamp(24px,3vw,34px);letter-spacing:-.01em}
.phead .sub{margin-top:8px}

/* gallery */
.gallery{display:grid;grid-template-columns:2.2fr 1fr;gap:12px;margin:22px 0}
.gallery .main{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.gallery .thumbs{display:grid;gap:12px}
.gallery .thumbs img{border-radius:10px;border:1px solid var(--line);aspect-ratio:3/2;object-fit:cover;height:100%;width:100%}

/* apps */
.apps{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;list-style:none}
.apps li{background:var(--soft);border:1px solid var(--line);border-radius:9px;padding:11px 15px;font-size:14px;color:var(--ink2)}

/* form */
.form{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.form h3{margin-bottom:4px}
.form .hint{font-size:13.5px;color:var(--muted);margin-bottom:16px}
.form label{display:block;font-size:13px;font-weight:700;margin:12px 0 5px;color:var(--ink2)}
.form input,.form textarea,.form select{width:100%;border:1px solid #c9d5df;border-radius:8px;padding:10px 12px;font-size:14.5px;font-family:inherit;background:#fff}
.form input:focus,.form textarea:focus{outline:2px solid #9cc3e0;border-color:var(--brand2)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* cta band */
.ctaband{background:linear-gradient(140deg,#0f4c81,#0a375f);border-radius:var(--radius);color:#fff;padding:36px 40px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin:44px 0}
.ctaband h3{color:#fff;font-size:21px}
.ctaband p{color:#c9dcec;font-size:14.5px;margin-top:4px}

/* contact info */
.cinfo{list-style:none;display:grid;gap:12px}
.cinfo li{display:flex;gap:12px;align-items:flex-start;color:var(--ink2)}
.cinfo b{color:var(--ink);min-width:92px;font-size:13.5px}

/* footer */
.ft{background:#0c1b2a;color:#b9c8d6;margin-top:60px}
.ft a{color:#d7e3ee}
.ft .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;padding:46px 0 34px}
.ft h4{color:#fff;font-size:14px;margin-bottom:12px;letter-spacing:.04em}
.ft ul{list-style:none}
.ft li{margin-bottom:8px;font-size:14px}
.ft .base{border-top:1px solid #1c3145;padding:16px 0;font-size:12.8px;color:#7e93a7;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}

/* whatsapp float */
.wafab{position:fixed;right:18px;bottom:18px;z-index:80;width:56px;height:56px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 8px 22px rgba(18,140,80,.45)}
.wafab svg{width:30px;height:30px;fill:#fff}
.wafab:hover{transform:scale(1.06)}

/* responsive */
@media(max-width:900px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr}
  .ft .cols{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  nav.main{position:fixed;inset:64px 0 auto 0;background:#fff;flex-direction:column;align-items:flex-start;padding:18px 22px;gap:16px;border-bottom:1px solid var(--line);transform:translateY(-130%);transition:transform .22s;box-shadow:0 14px 30px rgba(10,30,50,.12)}
  nav.main.open{transform:none}
  .burger{display:block}
  .hd .wa{display:none}
  .gallery{grid-template-columns:1fr}
}
@media(max-width:600px){
  .g2,.g3,.g4{grid-template-columns:1fr}
  .ft .cols{grid-template-columns:1fr}
  .certs{grid-template-columns:1fr}
  .form .row{grid-template-columns:1fr}
  section{padding:46px 0}
  .hero{min-height:440px}
}