:root{
  --navy:#0f2540;
  --navy-2:#17325a;
  --ink:#1b2733;
  --muted:#5d6b7a;
  --line:#e1e8ef;
  --bg:#ffffff;
  --bg-soft:#f4f7fa;
  --blue:#0e7ac4;
  --orange:#f97316;
  --orange-dark:#ea580c;
  --green:#16a34a;
  --shadow:0 10px 30px rgba(15,37,64,.08);
  --r:8px;
  --mw:1140px;
  --hh:70px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  letter-spacing:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:100%;max-width:var(--mw);margin:0 auto;padding:0 24px}
.sec{padding:76px 0}
.sec-soft{background:var(--bg-soft)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--blue);font-size:.78rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange)}
.st{font-size:2rem;font-weight:800;color:var(--navy);line-height:1.2;margin-bottom:12px}
.ss{font-size:.98rem;color:var(--muted);max-width:640px;margin:0 auto 44px;text-align:center}
.center{text-align:center}

/* Header */
.hdr{position:fixed;top:0;left:0;right:0;height:var(--hh);background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);z-index:100;transition:box-shadow .2s}
.hdr.scrolled{box-shadow:0 4px 18px rgba(15,37,64,.08)}
.hi{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;flex-direction:column;gap:2px;font-size:1.24rem;font-weight:800;color:var(--navy);line-height:1}
.logo span b{color:var(--orange)}
.logo small{font-size:.66rem;font-weight:600;color:var(--muted);letter-spacing:.14em;text-transform:uppercase}
.nav{display:flex;align-items:center;gap:26px}
.nav a{font-size:.86rem;font-weight:600;color:#33465c;position:relative;padding:6px 0}
.nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--orange);transition:width .2s}
.nav a:hover::after,.nav a.on::after{width:100%}
.nav a.on{color:var(--navy)}
.cta{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--r);font-weight:700;font-size:.86rem;color:#fff;background:var(--orange);transition:.2s}
.cta:hover{background:var(--orange-dark);transform:translateY(-1px)}
.cta.ghost{background:transparent;color:var(--navy);border:2px solid var(--navy)}
.cta.ghost:hover{background:var(--navy);color:#fff}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{display:block;width:24px;height:2px;background:var(--navy);border-radius:2px;transition:.3s}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 26px;border-radius:var(--r);font-weight:700;font-size:.9rem;cursor:pointer;border:0;transition:.2s;white-space:nowrap}
.btn-p{background:var(--orange);color:#fff}
.btn-p:hover{background:var(--orange-dark);box-shadow:0 6px 18px rgba(249,115,22,.35)}
.btn-o{background:transparent;color:var(--navy);border:2px solid var(--navy)}
.btn-o:hover{background:var(--navy);color:#fff}
.btn-b{background:var(--blue);color:#fff}
.btn-b:hover{background:#0b639e}

/* Hero */
.hero{position:relative;min-height:88vh;display:flex;align-items:center;padding:calc(var(--hh) + 48px) 0 64px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:-1}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,25,44,.92) 0%,rgba(10,25,44,.78) 46%,rgba(10,25,44,.35) 100%)}
.hero-content{max-width:680px;color:#fff}
.hero-content .eyebrow{color:#ffd6b8}
.hero-content h1{font-size:3rem;font-weight:800;line-height:1.12;margin-bottom:18px}
.hero-content h1 span{color:var(--orange)}
.hero-content p{font-size:1.05rem;color:rgba(255,255,255,.82);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{display:flex;gap:34px;margin-top:44px;flex-wrap:wrap}
.hero-meta div{display:flex;flex-direction:column;gap:2px}
.hero-meta strong{font-size:1.25rem;font-weight:800;color:#fff}
.hero-meta span{font-size:.8rem;color:rgba(255,255,255,.62);text-transform:uppercase;letter-spacing:.06em}

/* Stats strip */
.strip{background:var(--navy);color:#fff}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:30px 0}
.strip-grid div{display:flex;align-items:center;gap:14px}
.strip-grid b{font-size:1.5rem;font-weight:800;color:var(--orange)}
.strip-grid span{font-size:.84rem;color:rgba(255,255,255,.72)}

/* Grids */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;transition:.25s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.card .ic{width:44px;height:44px;border-radius:8px;display:flex;align-items:center;justify-content:center;background:#e8f2f9;color:var(--blue);margin-bottom:14px}
.card .ic svg{width:22px;height:22px}
.card h3{font-size:1rem;font-weight:800;color:var(--navy);margin-bottom:8px}
.card p{font-size:.88rem;color:var(--muted);line-height:1.6}

/* Product cards */
.prod-card{border:1px solid var(--line);border-radius:var(--r);background:#fff;overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.prod-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.prod-card .img{aspect-ratio:4/3;overflow:hidden;background:var(--bg-soft)}
.prod-card .img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.prod-card:hover .img img{transform:scale(1.04)}
.prod-card .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:6px;flex:1}
.prod-card h3{font-size:1.04rem;font-weight:800;color:var(--navy)}
.prod-card .sub{font-size:.78rem;color:var(--orange);font-weight:700;text-transform:uppercase;letter-spacing:.05em}
.prod-card p{font-size:.87rem;color:var(--muted);flex:1}

/* Table */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r)}
table.tbl{width:100%;border-collapse:collapse;font-size:.88rem;min-width:640px}
.tbl th{background:var(--navy);color:#fff;text-align:left;padding:13px 16px;font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em}
.tbl td{padding:12px 16px;border-bottom:1px solid var(--line)}
.tbl tr:nth-child(even) td{background:#f8fafc}
.tbl .hl td{background:#fff4ea;font-weight:700}

/* Materials */
.mat{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.mat .card{border-top:3px solid var(--blue)}
.mat .card.pa6{border-top-color:var(--orange)}
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.72rem;font-weight:700;margin-bottom:12px;background:#e8f2f9;color:var(--blue)}
.badge.warm{background:#fff1e7;color:var(--orange-dark)}
.mat ul{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;font-size:.85rem;color:var(--muted)}
.mat li{display:flex;gap:8px;align-items:flex-start}
.mat li::before{content:"\2713";color:var(--green);font-weight:800}

/* Process */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{position:relative;padding:24px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--r)}
.step b{display:block;width:34px;height:34px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.9rem;margin-bottom:12px}
.step h3{font-size:.94rem;font-weight:800;color:var(--navy);margin-bottom:6px}
.step p{font-size:.82rem;color:var(--muted)}

/* FAQ */
.faq{border:1px solid var(--line);border-radius:var(--r);background:#fff;margin-bottom:12px}
.faq summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:700;color:var(--navy);display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.3rem;color:var(--orange);font-weight:800}
.faq[open] summary::after{content:"\2212"}
.faq p{padding:0 22px 18px;font-size:.88rem;color:var(--muted)}

/* Page hero (inner) */
.page-hero{background:var(--navy);color:#fff;padding:calc(var(--hh) + 56px) 0 52px;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(249,115,22,.12),rgba(249,115,22,0) 42%)}
.page-hero h1{font-size:2.3rem;font-weight:800;margin-bottom:10px}
.page-hero p{color:rgba(255,255,255,.75);max-width:640px}
.crumbs{font-size:.8rem;color:rgba(255,255,255,.55);margin-bottom:14px}
.crumbs b{color:var(--orange)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:34px;align-items:start}
.info-list{display:grid;gap:14px;margin-top:22px}
.info-item{display:flex;gap:14px;align-items:flex-start;padding:16px;background:#fff;border:1px solid var(--line);border-radius:var(--r)}
.info-item .ic{width:40px;height:40px;flex:none;border-radius:8px;background:#e8f2f9;color:var(--blue);display:flex;align-items:center;justify-content:center}
.info-item .ic svg{width:20px;height:20px}
.info-item strong{display:block;font-size:.9rem;color:var(--navy);margin-bottom:2px}
.info-item span,.info-item a{font-size:.86rem;color:var(--muted)}
.info-item a{color:var(--blue);font-weight:600}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px}
.form h2{font-size:1.2rem;color:var(--navy);margin-bottom:20px}
.fg{margin-bottom:16px}
.fg label{display:block;font-size:.82rem;font-weight:700;color:var(--navy);margin-bottom:6px}
.fg input,.fg select,.fg textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:var(--r);font-size:.9rem;font-family:inherit;color:var(--ink);background:#fbfdff;transition:.2s}
.fg input:focus,.fg select:focus,.fg textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(14,122,196,.12)}
.fg textarea{min-height:120px;resize:vertical}
.form-note{font-size:.8rem;color:var(--muted);margin-top:14px}

/* CTA band */
.cta-band{background:linear-gradient(120deg,var(--navy),var(--navy-2));color:#fff;padding:56px 0}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h2{font-size:1.7rem;font-weight:800;margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.72);max-width:520px}

/* Footer */
.ftr{background:#0a1626;color:rgba(255,255,255,.66);padding:52px 0 26px}
.ftg{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:34px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.08)}
.ftr h4{color:#fff;font-size:.9rem;font-weight:700;margin-bottom:14px}
.ftr li{margin-bottom:9px}
.ftr li a{font-size:.85rem;transition:.2s}
.ftr li a:hover{color:#fff}
.ftr .logo{color:#fff;margin-bottom:14px}
.ftr .about{font-size:.85rem;line-height:1.7}
.fbb{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding-top:22px;font-size:.8rem;color:rgba(255,255,255,.4)}

/* Mobile nav */
.drawer{position:fixed;inset:0;background:rgba(10,22,38,.45);z-index:120;display:none}
.drawer.open{display:block}
.side{position:fixed;top:0;right:-300px;width:280px;height:100%;background:#fff;z-index:130;padding:26px;display:flex;flex-direction:column;gap:18px;transition:right .3s;box-shadow:-10px 0 30px rgba(0,0,0,.15)}
.side.open{right:0}
.side a{font-weight:700;color:var(--navy);padding:10px 0;border-bottom:1px solid var(--line)}
.side .cta{justify-content:center;margin-top:8px}
.close{position:absolute;top:18px;right:18px;background:none;border:0;font-size:1.5rem;cursor:pointer;color:var(--muted)}

@media(max-width:1024px){
  .grid-3{grid-template-columns:1fr 1fr}
  .strip-grid{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .ftg{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav{display:none}
  .burger{display:flex}
  .hero{min-height:auto;padding-top:calc(var(--hh) + 44px)}
  .hero-content h1{font-size:2.1rem}
  .hero-content p{font-size:.95rem}
  .grid-3,.grid-2,.mat{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .strip-grid{grid-template-columns:1fr 1fr;gap:16px}
  .contact-grid{grid-template-columns:1fr}
  .sec{padding:56px 0}
  .st{font-size:1.6rem}
  .page-hero h1{font-size:1.9rem}
  .ftg{grid-template-columns:1fr;gap:24px}
}