:root{
    --charcoal:#20242A;
    --charcoal-2:#14171B;
    --steel:#3E6B8A;
    --steel-dark:#2A4A61;
    --rust:#9C4A2E;
    --safety:#E0552B;
    --safety-dark:#C4451F;
    --concrete:#EDE9E0;
    --paper:#F8F6F1;
    --ink:#20242A;
    --muted:#6C7178;
    --line:#DCD7CB;
    --display:'Barlow Condensed',sans-serif;
    --body:'Inter',sans-serif;
    --mono:'IBM Plex Mono',monospace;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{margin:0;font-family:var(--body);color:var(--ink);background:var(--concrete);line-height:1.55;}
  img{max-width:100%;display:block;}
  a{color:inherit;}
  h1,h2,h3,h4{font-family:var(--display);text-transform:uppercase;letter-spacing:.02em;margin:0;font-weight:700;line-height:1.05;}
  .eyebrow{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--safety);font-weight:600;}
  .wrap{max-width:1080px;margin:0 auto;padding:0 24px;}
  section{padding:88px 0;}
  .btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.85rem;letter-spacing:.04em;text-transform:uppercase;text-decoration:none;padding:14px 24px;border-radius:2px;font-weight:600;transition:transform .15s ease, background .15s ease;}
  .btn:hover{transform:translateY(-2px);}
  .btn-primary{background:var(--safety);color:#fff;}
  .btn-primary:hover{background:var(--safety-dark);}
  .btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);}
  .btn-ghost:hover{background:rgba(255,255,255,.1);}
  .btn-dark{background:var(--charcoal);color:#fff;}
  .btn-dark:hover{background:#000;}

  /* ---------- Sidebar (desktop) / Top bar (mobile) ---------- */
  :root{ --sidebar-w:250px; --topbar-h:64px; }
  .sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);background:var(--charcoal);border-right:1px solid rgba(255,255,255,.08);z-index:50;display:flex;flex-direction:column;padding:26px 22px;overflow-y:auto;}
  .logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff;}
  .logo img{height:52px;width:auto;flex:none;border-radius:4px;}
  .logo-text{font-family:var(--display);line-height:1;}
  .logo-text b{display:block;font-size:1.35rem;letter-spacing:.03em;font-weight:700;}
  .logo-text span{display:block;font-size:.6rem;letter-spacing:.32em;color:var(--safety);font-weight:600;}
  nav.links{display:flex;flex-direction:column;gap:4px;margin-top:44px;}
  nav.links a{color:#DADCE0;text-decoration:none;font-size:.95rem;font-weight:500;letter-spacing:.01em;padding:11px 10px;border-left:2px solid transparent;}
  nav.links a:hover{color:#fff;border-left-color:var(--safety);background:rgba(255,255,255,.03);}
  nav.links a.btn{margin-top:18px;justify-content:center;border-left:0;}
  .sidebar-foot{margin-top:auto;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);font-family:var(--mono);font-size:.78rem;color:#9A9EA6;line-height:1.7;}
  .sidebar-foot a{color:#DADCE0;text-decoration:none;}
  #menu-toggle{display:none;}
  .burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px;}
  .burger span{width:24px;height:2px;background:#fff;display:block;}
  .topbar{display:none;}

  body{margin-left:var(--sidebar-w);}

  @media (max-width:880px){
    body{margin-left:0;margin-top:var(--topbar-h);}
    .topbar{display:flex;align-items:center;justify-content:space-between;position:fixed;top:0;left:0;right:0;height:var(--topbar-h);background:var(--charcoal);padding:0 20px;z-index:60;border-bottom:1px solid rgba(255,255,255,.08);}
    .sidebar{transform:translateX(-100%);transition:transform .25s ease;width:78vw;max-width:320px;padding-top:90px;}
    #menu-toggle:checked ~ .sidebar{transform:translateX(0);}
    .burger{display:flex;}
    nav.links a{font-size:1.1rem;}
  }

  /* ---------- Hero ---------- */
  .hero{position:relative;min-height:88vh;display:flex;align-items:flex-end;color:#fff;overflow:hidden;}
  .hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(20,23,27,.55) 0%, rgba(20,23,27,.55) 35%, rgba(20,23,27,.94) 100%);z-index:1;}
  .hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;}
  .hero-inner{position:relative;z-index:2;padding:70px 24px 56px;max-width:1180px;margin:0 auto;width:100%;}
  .hero h1{font-size:clamp(2.4rem,6vw,4.6rem);max-width:16ch;margin:14px 0 20px;}
  .hero p.lead{max-width:52ch;color:#E7E5DF;font-size:1.05rem;margin-bottom:32px;}
  .hero-actions{display:flex;gap:16px;flex-wrap:wrap;}
  .plate{position:absolute;right:24px;bottom:-1px;display:none;}
  @media(min-width:960px){
    .plate{display:flex;}
  }
  .plate{align-items:center;gap:10px;background:var(--paper);color:var(--charcoal);border:2px solid var(--ink);padding:14px 18px;font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;transform:translateY(-40px);box-shadow:0 8px 24px rgba(0,0,0,.25);}
  .plate .rivet{width:6px;height:6px;border-radius:50%;background:var(--safety);}

  /* ---------- About ---------- */
  .about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:start;}
  @media(max-width:900px){.about-grid{grid-template-columns:1fr;gap:36px;}}
  .about-grid h2{font-size:2.4rem;margin-bottom:22px;}
  .about-grid p{color:var(--muted);font-size:1.02rem;margin:0 0 16px;}
  .facts{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line);}
  .fact{background:var(--paper);padding:22px;}
  .fact .eyebrow{display:block;margin-bottom:6px;}
  .fact strong{font-family:var(--display);font-size:1.15rem;text-transform:uppercase;display:block;}

  /* ---------- Pillars ---------- */
  .pillars{background:var(--charcoal);color:#fff;}
  .pillars .head{max-width:60ch;margin-bottom:48px;}
  .pillars h2{font-size:2.2rem;color:#fff;margin:12px 0 14px;}
  .pillars .head p{color:#B7BAC0;}
  .pillar-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.14);}
  @media(max-width:820px){.pillar-grid{grid-template-columns:1fr;}}
  .pillar{background:var(--charcoal-2);padding:34px 30px;cursor:pointer;transition:background .15s ease;}
  .pillar:hover{background:#1B1F24;}
  .pillar .num{font-family:var(--mono);color:var(--safety);font-size:.8rem;letter-spacing:.1em;}
  .pillar h3{font-size:1.6rem;color:#fff;margin:12px 0 10px;}
  .pillar p{color:#AEB1B8;font-size:.92rem;margin:0;}

  /* ---------- Catalog (spec sheet) ---------- */
  .catalog .head{max-width:70ch;margin-bottom:8px;}
  .catalog h2{font-size:2.2rem;margin:12px 0 10px;}
  .catalog .head p{color:var(--muted);margin-bottom:36px;}
  .tabs{display:flex;gap:0;border:1px solid var(--ink);width:fit-content;margin-bottom:28px;}
  .tab{font-family:var(--mono);font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;padding:12px 20px;background:transparent;border:0;cursor:pointer;color:var(--ink);border-right:1px solid var(--ink);font-weight:600;}
  .tab:last-child{border-right:0;}
  .tab.active{background:var(--ink);color:#fff;}
  .sheet{display:none;}
  .sheet.active{display:block;}
  .sheet-list{border-top:1px solid var(--line);}
  .spec{display:grid;grid-template-columns:70px 1fr;gap:20px;padding:20px 4px;border-bottom:1px solid var(--line);}
  .spec .code{font-family:var(--mono);color:var(--safety);font-weight:600;font-size:.85rem;padding-top:2px;}
  .spec h4{font-family:var(--body);text-transform:none;font-weight:700;font-size:1.03rem;margin-bottom:6px;letter-spacing:0;}
  .spec p{margin:0;color:var(--muted);font-size:.92rem;}
  .spec .sub{margin-top:8px;font-size:.86rem;color:var(--muted);}
  .spec .sub b{color:var(--ink);font-weight:600;}

  /* ---------- Gallery ---------- */
  .gallery h2{font-size:2.2rem;margin:12px 0 10px;}
  .gallery .head p{color:var(--muted);max-width:60ch;margin-bottom:36px;}
  .grid-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;}
  @media(max-width:900px){.grid-gallery{grid-template-columns:repeat(2,1fr);}}
  .grid-gallery a{position:relative;display:block;overflow:hidden;aspect-ratio:4/3;background:#ccc;}
  .grid-gallery img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
  .grid-gallery a:hover img{transform:scale(1.06);}
  .grid-gallery a::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(0,0,0,.45));}

  /* lightbox */
  .lightbox{position:fixed;inset:0;background:rgba(10,11,13,.94);z-index:100;display:none;align-items:center;justify-content:center;padding:24px;}
  .lightbox.open{display:flex;}
  .lightbox img{max-width:min(92vw,1100px);max-height:86vh;object-fit:contain;}
  .lightbox button{position:absolute;top:20px;right:24px;background:none;border:0;color:#fff;font-size:2rem;cursor:pointer;line-height:1;}

  /* ---------- Contact ---------- */
  .contact{background:var(--charcoal);color:#fff;}
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;}
  @media(max-width:900px){.contact-grid{grid-template-columns:1fr;}}
  .contact h2{font-size:2.2rem;color:#fff;margin:12px 0 20px;}
  .cline{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.12);}
  .cline .lbl{font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;color:var(--safety);text-transform:uppercase;width:100px;flex:none;padding-top:2px;}
  .cline a,.cline span{color:#EDEBE4;text-decoration:none;font-size:.98rem;}
  .cline a:hover{color:var(--safety);}
  .map-frame{border:0;width:100%;height:100%;min-height:320px;filter:grayscale(.4) contrast(1.05);}

  /* ---------- Footer ---------- */
  footer{background:var(--charcoal-2);color:#9A9EA6;padding:40px 0;}
  .foot-grid{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;font-size:.85rem;}
  .foot-grid .logo b{color:#fff;}

  /* whatsapp float */
  .wa-float{position:fixed;bottom:22px;right:22px;background:#25D366;color:#fff;width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,0,0,.3);z-index:60;text-decoration:none;}
  .wa-float svg{width:28px;height:28px;fill:#fff;}

  ::selection{background:var(--safety);color:#fff;}

/* ---------- Mission / Vision ---------- */
.mv{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.mv-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);}
@media(max-width:820px){.mv-grid{grid-template-columns:1fr;}}
.mv-card{background:var(--paper);padding:38px 34px;}
.mv-card .eyebrow{display:block;margin-bottom:14px;}
.mv-card h3{font-size:1.7rem;margin-bottom:14px;}
.mv-card p{color:var(--muted);margin:0;font-size:.98rem;}
.slogan-strip{background:var(--ink);color:#fff;padding:26px 0;text-align:center;}
.slogan-strip p{font-family:var(--display);text-transform:uppercase;letter-spacing:.05em;font-size:clamp(1rem,2.4vw,1.5rem);margin:0;color:#fff;}
.slogan-strip span{color:var(--safety);}

/* ---------- CTA split (homepage teaser to full listing pages) ---------- */
.cta-split{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);}
@media(max-width:820px){.cta-split{grid-template-columns:1fr;}}
.cta-card{background:var(--paper);padding:40px 34px;text-decoration:none;color:var(--ink);display:block;transition:background .15s ease;}
.cta-card:hover{background:#fff;}
.cta-card .num{font-family:var(--mono);color:var(--safety);font-size:.78rem;letter-spacing:.1em;}
.cta-card h3{font-size:1.8rem;margin:12px 0 10px;}
.cta-card p{color:var(--muted);font-size:.95rem;margin:0 0 16px;}
.cta-card .go{font-family:var(--mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;font-weight:600;color:var(--ink);}
.cta-card:hover .go{color:var(--safety);}

/* ---------- Listing pages (products.html / services.html) ---------- */
.page-hero{background:var(--charcoal);color:#fff;padding:64px 0 48px;}
.page-hero .eyebrow{color:#FF8A5C;}
.page-hero h1{font-size:clamp(2rem,4.6vw,3rem);color:#fff;margin:12px 0 12px;}
.page-hero p{color:#B7BAC0;max-width:60ch;margin:0;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
@media(max-width:960px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.card-grid{grid-template-columns:1fr;}}
.item-card{display:block;text-decoration:none;color:var(--ink);background:var(--paper);border:1px solid var(--line);overflow:hidden;transition:transform .15s ease, box-shadow .15s ease;}
.item-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(0,0,0,.12);}
.item-card .thumb{aspect-ratio:4/3;overflow:hidden;background:#ccc;}
.item-card .thumb img{width:100%;height:100%;object-fit:cover;}
.item-card .body{padding:18px 20px 22px;}
.item-card .code{font-family:var(--mono);color:var(--safety);font-size:.75rem;letter-spacing:.08em;}
.item-card h3{font-family:var(--body);text-transform:none;font-weight:700;font-size:1.05rem;letter-spacing:0;margin:8px 0 6px;}
.item-card p{color:var(--muted);font-size:.88rem;margin:0;}

/* ---------- Detail pages ---------- */
.crumb{font-family:var(--mono);font-size:.78rem;color:#B7BAC0;text-transform:uppercase;letter-spacing:.06em;}
.crumb a{color:#B7BAC0;text-decoration:none;}
.crumb a:hover{color:#fff;}
.detail-hero{position:relative;color:#fff;}
.detail-hero img{width:100%;height:340px;object-fit:cover;display:block;}
.detail-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(20,23,27,.35), rgba(20,23,27,.92));}
.detail-hero-inner{position:absolute;left:0;right:0;bottom:0;padding:28px 24px 30px;max-width:1080px;margin:0 auto;z-index:2;}
.detail-hero-inner .code{font-family:var(--mono);color:var(--safety);font-size:.8rem;letter-spacing:.1em;display:block;margin-bottom:8px;}
.detail-hero-inner h1{font-size:clamp(1.8rem,4vw,2.8rem);color:#fff;}
.detail-body{padding:56px 0;}
.detail-body .lede{font-size:1.08rem;color:var(--ink);max-width:70ch;margin-bottom:28px;}
.subtype-list{border-top:1px solid var(--line);margin-top:20px;}
.subtype{padding:18px 0;border-bottom:1px solid var(--line);}
.subtype h4{font-family:var(--body);text-transform:none;font-weight:700;font-size:1rem;margin-bottom:6px;letter-spacing:0;}
.subtype p{margin:0;color:var(--muted);font-size:.92rem;}
.detail-cta{margin-top:36px;padding-top:28px;border-top:1px solid var(--line);display:flex;gap:14px;flex-wrap:wrap;align-items:center;}
.detail-cta p{margin:0;color:var(--muted);font-size:.92rem;}
.back-link{display:inline-block;margin-top:28px;font-family:var(--mono);font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);text-decoration:none;font-weight:600;}
.back-link:hover{color:var(--safety);}

/* ---------- Coating service page ---------- */
.section-block{padding:56px 0;border-bottom:1px solid var(--line);}
.section-block:last-of-type{border-bottom:0;}
.section-block h2{font-size:1.9rem;margin:10px 0 8px;}
.section-block > .wrap > p.intro{color:var(--muted);max-width:70ch;margin-bottom:32px;}
.process-card{display:grid;grid-template-columns:340px 1fr;gap:32px;padding:28px 0;border-top:1px solid var(--line);align-items:start;}
.process-card:first-of-type{border-top:0;}
@media(max-width:800px){.process-card{grid-template-columns:1fr;}}
.process-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--line);}
.process-card h3{font-family:var(--body);text-transform:none;font-weight:700;font-size:1.25rem;letter-spacing:0;margin-bottom:12px;}
.process-card .col-heads{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
@media(max-width:560px){.process-card .col-heads{grid-template-columns:1fr;}}
.process-card h4{font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--safety);margin-bottom:8px;}
.process-card ul{margin:0;padding-left:18px;color:var(--muted);font-size:.9rem;line-height:1.6;}

.chip-groups{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);}
.chip-group{background:var(--paper);padding:24px 22px;}
.chip-group h4{font-family:var(--body);text-transform:none;font-weight:700;font-size:1rem;letter-spacing:0;margin-bottom:12px;}
.chip-group ul{margin:0;padding-left:18px;color:var(--muted);font-size:.9rem;line-height:1.7;}

.app-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
@media(max-width:760px){.app-grid{grid-template-columns:1fr;}}
.app-card{background:var(--paper);border:1px solid var(--line);}
.app-card .photos{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;}
.app-card.single .photos{grid-template-columns:1fr;}
.app-card .photos img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.app-card .body{padding:20px 22px;}
.app-card h3{font-family:var(--body);text-transform:none;font-weight:700;font-size:1.1rem;letter-spacing:0;margin-bottom:8px;}
.app-card p{color:var(--muted);font-size:.9rem;margin:0 0 10px;}
.app-card ul{margin:0;padding-left:18px;color:var(--muted);font-size:.87rem;line-height:1.6;}

.material-row{display:flex;flex-wrap:wrap;gap:10px;}
.material-chip{font-family:var(--mono);font-size:.75rem;letter-spacing:.05em;text-transform:uppercase;background:var(--paper);border:1px solid var(--line);padding:8px 14px;color:var(--ink);}

/* ---------- Spec strip (Applications / Size / MOC) + Why Choose Us ---------- */
.spec-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:10px;}
@media(max-width:760px){.spec-strip{grid-template-columns:1fr;}}
.spec-strip .cell{background:var(--paper);padding:22px 24px;}
.spec-strip .cell h4{font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--safety);margin-bottom:10px;}
.spec-strip .cell p{margin:0;color:var(--ink);font-size:.92rem;line-height:1.6;}
.spec-strip .cell ul{margin:0;padding-left:18px;color:var(--ink);font-size:.9rem;line-height:1.7;}

.why-us{background:var(--charcoal);color:#fff;padding:44px 0;margin-top:0;}
.why-us .wrap{display:grid;grid-template-columns:1fr 2fr;gap:36px;align-items:start;}
@media(max-width:760px){.why-us .wrap{grid-template-columns:1fr;}}
.why-us h3{color:#fff;font-size:1.6rem;}
.why-us p{color:#C7CAD0;margin:0 0 12px;font-size:.95rem;line-height:1.65;}
.why-us ul{margin:0;padding-left:18px;color:#C7CAD0;font-size:.92rem;line-height:1.8;}

.faq{border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);padding:16px 0;}
.faq summary{font-weight:600;cursor:pointer;font-size:.98rem;list-style:none;display:flex;justify-content:space-between;gap:12px;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--safety);flex:none;}
.faq details[open] summary::after{content:"–";}
.faq p{color:var(--muted);margin:10px 0 0;font-size:.92rem;line-height:1.6;}

/* ---------- Applications / Size / MOC / Why choose us blocks ---------- */
.spec-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin:28px 0;}
@media(max-width:700px){.spec-facts{grid-template-columns:1fr;}}
.spec-facts .sf{background:var(--paper);padding:18px 20px;}
.spec-facts .sf h4{font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--safety);margin-bottom:8px;}
.spec-facts .sf p, .spec-facts .sf ul{margin:0;color:var(--ink);font-size:.92rem;line-height:1.55;}
.spec-facts .sf ul{padding-left:18px;}
.why-us{background:var(--charcoal);color:#fff;padding:30px 28px;margin-top:32px;}
.why-us h4{font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--safety);margin-bottom:10px;}
.why-us p{margin:0;color:#D9DBE0;font-size:.95rem;line-height:1.6;}

/* ---------- Map directions overlay ---------- */
.map-wrap{position:relative;height:100%;min-height:320px;}
.map-frame{position:absolute;inset:0;}
.map-directions{position:absolute;right:14px;bottom:14px;z-index:5;background:var(--safety);color:#fff;font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;font-weight:600;padding:10px 16px;text-decoration:none;box-shadow:0 6px 18px rgba(0,0,0,.35);border-radius:2px;}
.map-directions:hover{background:var(--safety-dark);}