:root{
    /* ===== Paleta industrial refinada =====
       Base clara de porcelana (alumina) + grafite, ancorada por bandas
       escuras (hero · rodapé). Um único vermelho de marca (calor
       de sinterização) com variações derivadas + aço como acento frio. */
    --graphite-900:#f5f6f7;   /* base — porcelana fria (cor da alumina) */
    --graphite-850:#edeff1;   /* fundo de seção alternada */
    --graphite-800:#e4e7ea;   /* card / hover de superfície */
    --graphite-700:#d8dce0;
    --graphite-600:#b9c0c7;   /* numerais grandes vazados */
    --line:#dde1e5;           /* hairlines / bordas — cinza frio */
    --ceramic:#14171c;        /* tinta primária — grafite */
    --ceramic-dim:#39414a;    /* texto secundário */
    --muted:#5c6671;          /* texto suave — cinza frio (AA) */
    --muted-2:#929ba4;        /* rótulos tênues */
    --ink-on:#ffffff;         /* texto sobre o vermelho */
    /* vermelho único de marca + derivados (mesma matiz do logo) */
    --ember:#d11f27;          /* vermelho de UI (calor) */
    --ember-soft:#ec4a40;     /* vermelho claro p/ realces/gradientes */
    --ember-deep:#9c1016;     /* vermelho escuro p/ hover */
    --brand-logo:#d8231b;     /* vermelho do wordmark CETARCH (caixa) */
    --logo-ink:#14171c;       /* grafite de apoio */
    --steel:#356179;          /* aço — secundário frio (metal/equipamento) */
    --steel-soft:#5e8aa3;     /* aço claro p/ acentos sobre fundo escuro */
    --glow:rgba(209,31,39,.30);
    /* ===== Âncoras escuras (hero · rodapé) ===== */
    --d-bg:#0f1216;
    --d-bg-2:#14181d;
    --d-surface:#181d23;
    --d-surface-2:#1f252c;
    --d-line:#2a313a;
    --d-ink:#eef1f4;
    --d-dim:#b7bfc8;
    --d-muted:#8b949e;
    --maxw:1280px;
    --ff-display:"Saira",sans-serif;
    --ff-body:"IBM Plex Sans",sans-serif;
    --ff-mono:"IBM Plex Mono",monospace;
  }

  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    background:var(--graphite-900);
    color:var(--ceramic);
    font-family:var(--ff-body);
    font-weight:300;
    line-height:1.6;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }

  /* film grain overlay */
  body::after{
    content:"";
    position:fixed;inset:0;z-index:9999;pointer-events:none;
    opacity:.38;mix-blend-mode:multiply;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
  }

  ::selection{background:var(--ember);color:var(--ink-on)}

  a{color:inherit;text-decoration:none}
  img,svg{display:block;max-width:100%}

  .wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}

  .mono{font-family:var(--ff-mono);font-weight:400;letter-spacing:.02em}
  .eyebrow{
    font-family:var(--ff-mono);font-size:12px;letter-spacing:.32em;
    text-transform:uppercase;color:var(--ember);
    display:inline-flex;align-items:center;gap:12px;
  }
  .eyebrow::before{content:"";width:28px;height:1px;background:var(--ember)}

  h1,h2,h3,h4{font-family:var(--ff-display);font-weight:800;line-height:1.02;letter-spacing:-.01em}

  /* ============ HEADER ============ */
  header{
    position:fixed;top:0;left:0;right:0;z-index:1000;
    transition:background .4s ease,border-color .4s ease,backdrop-filter .4s,box-shadow .4s;
    border-bottom:1px solid transparent;
    /* Tema claro: tinta grafite em todos os estados; vidro porcelana ao rolar */
    --hdr-ink:var(--ceramic);
    --hdr-dim:var(--ceramic-dim);
    --hdr-line:var(--line);
    --hdr-hover:var(--graphite-800);
  }
  header.scrolled{
    background:rgba(245,246,247,.82);
    backdrop-filter:blur(14px) saturate(1.3);
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 0 rgba(0,0,0,.02),0 14px 34px -24px rgba(20,20,25,.18);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:78px}
  .brand{display:inline-flex;align-items:center;--wm:21px}
  header .brand .wm-desc{display:none} /* header compacto; descritor aparece no hero e no footer */

  .menu{display:flex;align-items:center;gap:30px}
  .menu a{
    font-family:var(--ff-mono);font-size:13px;letter-spacing:.04em;color:var(--hdr-dim);
    position:relative;padding:6px 0;transition:color .25s;
  }
  .menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--ember);transition:width .3s}
  .menu a:hover{color:var(--hdr-ink)}
  .menu a:hover::after{width:100%}

  .nav-right{display:flex;align-items:center;gap:22px}
  .lang{display:flex;font-family:var(--ff-mono);font-size:12px;border:1px solid var(--hdr-line);border-radius:3px;overflow:hidden;transition:border-color .4s}
  .lang button{
    display:inline-flex;align-items:center;gap:5px;
    background:none;border:none;color:var(--hdr-dim);cursor:pointer;
    padding:7px 11px;font-family:var(--ff-mono);font-size:12px;letter-spacing:.05em;transition:.2s;
  }
  .lang button:hover{color:var(--hdr-ink);background:var(--hdr-hover)}
  .lang button.active{background:var(--ember);color:#fff}
  .lang button.active:hover{background:var(--ember-deep);color:#fff}
  .lang .fl{font-size:14px;line-height:1}
  /* Seletor de idioma no menu mobile: maior e centralizado */
  .lang-mobile{margin-top:30px;align-self:center;border-color:var(--line)}
  .lang-mobile button{font-size:16px;padding:12px 22px;gap:8px;color:var(--ceramic-dim)}
  .lang-mobile button:hover{color:var(--ceramic);background:var(--graphite-800)}
  .lang-mobile button.active{background:var(--ember);color:#fff}
  .lang-mobile .fl{font-size:19px}
  .cta-btn{
    font-family:var(--ff-mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;
    padding:11px 20px;border:1px solid var(--ember);color:#fff;border-radius:3px;
    background:var(--ember);transition:.28s;white-space:nowrap;
  }
  .cta-btn:hover{background:var(--ember-deep);border-color:var(--ember-deep);color:var(--ink-on);box-shadow:0 10px 26px -10px var(--glow)}

  .burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
  .burger span{width:24px;height:2px;background:var(--hdr-ink);transition:.3s,background .4s}

  /* ===== Marca CETARCH — logo oficial: wordmark branco em caixa vermelha =====
     Reconstrução fiel da marca (texto branco "CETARCH" + filete + descritor
     dentro do bloco vermelho), em vetor/CSS para nitidez em qualquer tamanho. */
  .wordmark{
    display:inline-flex;flex-direction:column;align-items:stretch;line-height:1;
    background:linear-gradient(152deg,#e0241a 0%,#bb1414 50%,#9e0e10 100%);
    padding:.5em .64em .46em;border-radius:.16em;
    box-shadow:inset 0 1px 0 rgba(255,255,255,.24),0 12px 26px -14px rgba(150,12,14,.55);
  }
  .wm-name{
    position:relative;display:block;white-space:nowrap;text-align:center;
    font-family:var(--ff-display);font-weight:900;font-size:var(--wm,24px);
    letter-spacing:.05em;color:#fff;text-transform:uppercase;
  }
  .wm-name::after{ /* filete branco sob o wordmark (como no logo) */
    content:"";display:block;height:max(2px,.075em);margin-top:.22em;
    background:rgba(255,255,255,.96);border-radius:2px;
  }
  .wm-desc{
    font-family:var(--ff-mono);font-weight:400;white-space:nowrap;text-align:center;
    font-size:calc(var(--wm,24px)*.21);letter-spacing:.03em;
    color:rgba(255,255,255,.92);margin-top:.46em;
  }

  /* ============ HERO ============ */
  /* Inicia logo abaixo do menu fixo (sem espaço morto) — sem altura forçada de tela cheia. */
  .hero{
    position:relative;display:flex;align-items:flex-start;padding:120px 0 76px;overflow:hidden;
    background:linear-gradient(180deg,#f8f9fa 0%,var(--graphite-900) 62%,var(--graphite-850) 100%);
    color:var(--ceramic);
  }
  /* Logo (wordmark) — masthead central, grande, abrindo o hero */
  /* Masthead central deliberado: wordmark ladeado por filetes-kicker,
     colado ao título — lê como bloco de título, não como logo repetido. */
  .hero-logo{--wm:clamp(44px,6vw,76px);margin:0 auto 30px;
    display:flex;align-items:center;justify-content:center;gap:28px;
    position:relative;z-index:2}
  .hero-logo::before,.hero-logo::after{
    content:"";flex:1 1 0;max-width:200px;height:1px;
    background:linear-gradient(90deg,transparent,var(--muted-2) 80%,var(--ember))}
  .hero-logo::after{background:linear-gradient(90deg,var(--ember),var(--muted-2) 20%,transparent)}
  @media(max-width:680px){ .hero-logo{--wm:38px;margin-bottom:24px;gap:14px}
    .hero-logo::before,.hero-logo::after{max-width:60px} }
  .hero-bg{position:absolute;inset:0;z-index:0}
  .hero-bg .grid{
    position:absolute;inset:0;
    background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
    background-size:60px 60px;opacity:.6;
    -webkit-mask-image:radial-gradient(ellipse 96% 78% at 50% 30%,#000 24%,transparent 82%);
            mask-image:radial-gradient(ellipse 96% 78% at 50% 30%,#000 24%,transparent 82%);
  }
  .hero-bg .kiln{
    position:absolute;right:-12%;top:14%;width:760px;height:760px;
    background:radial-gradient(circle,rgba(209,31,39,.13),rgba(209,31,39,.05) 38%,transparent 66%);
    filter:blur(24px);animation:pulse 7s ease-in-out infinite;
  }
  .hero-bg .ember2{
    position:absolute;left:-10%;bottom:-14%;width:560px;height:560px;
    background:radial-gradient(circle,rgba(53,97,121,.10),transparent 64%);filter:blur(34px);
  }
  /* filete superior de "calor" no topo do hero */
  .hero::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;z-index:3;
    background:linear-gradient(90deg,var(--ember),rgba(209,31,39,0) 55%)}
  @keyframes pulse{0%,100%{opacity:.85;transform:scale(1)}50%{opacity:1;transform:scale(1.06)}}

  .hero-inner{position:relative;z-index:2;width:100%;display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}
  .hero h1{font-size:clamp(46px,6.4vw,92px);text-transform:uppercase;margin:22px 0 26px;color:var(--ceramic)}
  .hero h1 .em{color:var(--ember);position:relative;display:inline-block}
  .hero p.lead{font-size:clamp(16px,1.5vw,19px);color:var(--ceramic-dim);max-width:540px;font-weight:300}
  .hero-actions{display:flex;gap:16px;margin-top:38px;flex-wrap:wrap}
  .btn-primary{
    font-family:var(--ff-mono);font-size:13px;letter-spacing:.06em;text-transform:uppercase;
    background:var(--ember);color:var(--ink-on);padding:15px 30px;border-radius:2px;
    display:inline-flex;align-items:center;gap:12px;transition:.3s;border:1px solid var(--ember);
  }
  .btn-primary:hover{background:var(--ember-deep);border-color:var(--ember-deep);transform:translateY(-2px);box-shadow:0 14px 34px -12px var(--glow)}
  .btn-ghost{
    font-family:var(--ff-mono);font-size:13px;letter-spacing:.06em;text-transform:uppercase;
    color:var(--ceramic);padding:15px 28px;border:1px solid var(--line);border-radius:2px;transition:.3s;
    display:inline-flex;align-items:center;gap:10px;
  }
  .btn-ghost:hover{border-color:var(--ceramic-dim);background:var(--graphite-800)}
  .hero .btn-ghost{color:var(--ceramic);border-color:var(--line)}
  .hero .btn-ghost:hover{border-color:var(--ceramic-dim);background:var(--graphite-800)}

  /* hero technical card */
  .hero-card{
    border:1px solid var(--line);background:linear-gradient(160deg,#ffffff,var(--graphite-850));
    border-radius:5px;padding:30px;position:relative;overflow:hidden;
    box-shadow:0 34px 64px -36px rgba(18,22,28,.3);
  }
  .hero-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--ember),transparent)}
  .hero-card h4{font-family:var(--ff-mono);font-weight:500;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-bottom:22px}
  .spec-row{display:flex;justify-content:space-between;align-items:baseline;padding:15px 0;border-bottom:1px dashed var(--line)}
  .spec-row:last-child{border-bottom:none;padding-bottom:0}
  .spec-row .k{font-family:var(--ff-mono);font-size:12.5px;color:var(--ceramic-dim)}
  .spec-row .v{font-family:var(--ff-display);font-weight:800;font-size:27px;color:var(--ceramic)}
  .spec-row .v u{text-decoration:none;color:var(--steel);font-size:14px;margin-left:3px}

  .hero-strip{position:relative;z-index:2;background:var(--graphite-850);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .hero-strip .wrap{display:flex;flex-wrap:wrap;gap:0}
  .hstat{flex:1;min-width:170px;padding:30px 30px 30px 0}
  .hstat:not(:last-child){border-right:1px solid var(--line);margin-right:30px}
  .hstat .n{font-family:var(--ff-display);font-weight:800;font-size:40px;color:var(--ceramic);line-height:1}
  .hstat .n u{text-decoration:none;color:var(--ember)}
  .hstat .l{font-family:var(--ff-mono);font-size:11.5px;color:var(--muted);letter-spacing:.04em;margin-top:10px}

  /* ============ SECTION SHELL ============ */
  section{position:relative}
  section[id]{scroll-margin-top:88px}
  .pad{padding:120px 0}
  .sec-head{max-width:760px;margin-bottom:64px}
  .sec-head h2{font-size:clamp(34px,4.4vw,62px);text-transform:uppercase;margin:20px 0 22px;line-height:.98}
  .sec-head p{color:var(--muted);font-size:17px;max-width:620px}
  .sec-num{font-family:var(--ff-mono);font-size:12px;color:var(--muted-2);letter-spacing:.1em}

  /* ============ ABOUT ============ */
  .about{background:var(--graphite-850);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
  .about-vis{position:relative;aspect-ratio:1/1;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--graphite-900)}
  .about-vis .rings{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
  .about-vis .glow{position:absolute;width:60%;height:60%;border-radius:50%;background:radial-gradient(circle,var(--glow),transparent 70%);filter:blur(28px);top:20%;left:20%;animation:pulse 6s ease-in-out infinite}
  .about-vis .lbl{position:absolute;bottom:20px;left:22px;font-family:var(--ff-mono);font-size:11px;color:var(--muted);letter-spacing:.18em;text-transform:uppercase}
  .about-vis .lbl b{color:var(--ember);display:block;font-size:13px;margin-top:4px;letter-spacing:.1em}
  .about-body h3{font-size:28px;margin-bottom:18px;line-height:1.1}
  .about-body p{color:var(--ceramic-dim);margin-bottom:18px;font-size:16px}
  .about-vals{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:34px}
  .about-vals .v{background:var(--graphite-850);padding:22px}
  .about-vals .v i{font-family:var(--ff-mono);font-style:normal;color:var(--ember);font-size:12px;letter-spacing:.1em}
  .about-vals .v b{display:block;font-family:var(--ff-display);font-weight:700;font-size:17px;margin-top:8px}

  /* ============ PROPERTIES ============ */
  .props-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
  .prop{background:var(--graphite-850);padding:34px 28px;transition:background .35s;position:relative}
  .prop:hover{background:var(--graphite-800)}
  .prop .ico{width:42px;height:42px;color:var(--ember);margin-bottom:24px}
  .prop h4{font-size:19px;margin-bottom:10px;text-transform:uppercase}
  .prop p{color:var(--muted);font-size:14px}
  .prop .tag{position:absolute;top:24px;right:24px;font-family:var(--ff-mono);font-size:11px;color:var(--muted-2)}

  /* ============ PRODUCTS ============ */
  .products{background:var(--graphite-850);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .pcard{
    border:1px solid var(--line);border-radius:4px;background:var(--graphite-900);
    padding:30px;position:relative;overflow:hidden;transition:.4s;cursor:default;
  }
  .pcard::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 0%,rgba(209,31,39,.10),transparent 55%);opacity:0;transition:opacity .4s}
  .pcard{box-shadow:0 14px 30px -24px rgba(18,22,28,.5)}
  .pcard:hover{border-color:var(--ember);transform:translateY(-4px);box-shadow:0 22px 46px -22px rgba(18,22,28,.5)}
  .pcard:hover::before{opacity:1}
  .pcard .pnum{font-family:var(--ff-mono);font-size:11px;color:var(--muted-2);letter-spacing:.1em}
  .pcard .pvis{height:130px;display:flex;align-items:center;justify-content:center;margin:14px 0 22px;color:var(--ceramic-dim)}
  .pcard:hover .pvis{color:var(--ember)}
  .pcard .pvis svg{height:100%;transition:.4s}
  .pcard:hover .pvis svg{transform:scale(1.06)}
  .pcard h4{font-size:22px;text-transform:uppercase;margin-bottom:10px}
  .pcard p{color:var(--muted);font-size:14px}
  .pcard .more{margin-top:18px;font-family:var(--ff-mono);font-size:11px;letter-spacing:.1em;color:var(--ember);text-transform:uppercase;opacity:0;transform:translateX(-6px);transition:.4s}
  .pcard:hover .more{opacity:1;transform:translateX(0)}
  /* card inteiro é link quando o produto tem página própria */
  a.pcard{cursor:pointer;display:block}
  /* sem hover (touch): "Saiba mais" sempre visível */
  @media (hover:none){ .pcard .more{opacity:1;transform:none} }
  .pcard-custom{border-color:transparent;box-shadow:0 20px 44px -22px var(--glow)}
  .pcard-custom::before{display:none}
  .pcard-custom h4{color:var(--ink-on)}
  .pcard-custom:hover{transform:translateY(-4px)}
  .catalog{margin-top:42px;border-top:1px solid var(--line);padding-top:34px}
  .cat-label{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:20px}
  .chips{display:flex;flex-wrap:wrap;gap:10px}
  .chip{
    font-family:var(--ff-mono);font-size:13px;color:var(--ceramic-dim);
    border:1px solid var(--line);background:var(--graphite-900);border-radius:2px;
    padding:9px 15px;transition:.25s;cursor:default;
  }
  .chip:hover{border-color:var(--ember);color:var(--ember);background:#fff}

  /* ============ INDUSTRIES ============ */
  .ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
  .ind{
    border:1px solid var(--line);border-radius:3px;padding:26px 22px;background:var(--graphite-850);
    transition:.35s;display:flex;flex-direction:column;gap:14px;min-height:160px;
  }
  .ind:hover{background:var(--ember);border-color:var(--ember)}
  .ind:hover *{color:#fff !important}
  .ind .ico{width:34px;height:34px;color:var(--ember);transition:.35s}
  .ind:hover .ico{color:#fff}
  .ind h4{font-size:18px;text-transform:uppercase;line-height:1.05}
  .ind span{font-family:var(--ff-mono);font-size:12px;color:var(--muted);margin-top:auto}

  /* ============ PROCESS / WHY ============ */
  .why{background:var(--graphite-850);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
  .step{background:var(--graphite-900);padding:38px 30px;position:relative}
  .step .sn{font-family:var(--ff-display);font-weight:900;font-size:54px;color:var(--graphite-600);line-height:1;-webkit-text-stroke:1px var(--line)}
  .step h4{font-size:19px;text-transform:uppercase;margin:18px 0 12px}
  .step p{color:var(--muted);font-size:14px}
  .step::after{content:"";position:absolute;top:46px;right:-1px;width:8px;height:8px;background:var(--ember);border-radius:50%;display:none}

  /* ============ CTA BANNER ============ */
  .banner{position:relative;overflow:hidden;text-align:center;padding:110px 0}
  .banner .kiln{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:900px;height:520px;background:radial-gradient(ellipse,rgba(209,31,39,.24),transparent 62%);filter:blur(40px)}
  .banner-inner{position:relative;z-index:2}
  .banner h2{font-size:clamp(34px,5vw,68px);text-transform:uppercase;margin:18px auto 24px;max-width:880px;line-height:1}
  .banner p{color:var(--ceramic-dim);max-width:540px;margin:0 auto 38px;font-size:17px}

  /* ============ CONTACT ============ */
  .contact{background:var(--graphite-850);border-top:1px solid var(--line)}
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px}
  .cinfo h3{font-size:26px;text-transform:uppercase;margin-bottom:28px}
  .citem{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
  .citem .ico{width:24px;height:24px;color:var(--ember);flex:none;margin-top:3px}
  .citem .ct{flex:1}
  .citem .ct i{font-family:var(--ff-mono);font-style:normal;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
  .citem .ct b{display:block;font-weight:400;font-size:16px;margin-top:5px;color:var(--ceramic)}
  .citem .ct b a:hover{color:var(--ember)}
  .map-link{display:inline-flex;align-items:center;gap:8px;margin-top:12px;font-family:var(--ff-mono);font-size:13px;color:var(--ember);transition:.25s}
  .map-link svg{width:16px;height:16px}
  .map-link:hover{color:var(--ember-deep);gap:11px}
  .phones{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:5px}
  .phones a{font-family:var(--ff-mono);font-size:14.5px;color:var(--ceramic);transition:.2s}
  .phones a:hover{color:var(--ember)}

  form{display:flex;flex-direction:column;gap:16px;background:var(--graphite-900);border:1px solid var(--line);border-radius:4px;padding:34px}
  .field label{font-family:var(--ff-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:8px}
  .field input,.field textarea,.field select{
    width:100%;background:var(--graphite-850);border:1px solid var(--line);border-radius:2px;
    padding:13px 15px;color:var(--ceramic);font-family:var(--ff-body);font-size:15px;transition:.25s;
  }
  .field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--ember);box-shadow:0 0 0 3px rgba(209,31,39,.14)}
  .field textarea{resize:vertical;min-height:110px}
  form .btn-primary{justify-content:center;border:none;cursor:pointer;margin-top:6px;font-size:13px}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

  /* ============ FOOTER ============ */
  footer{background:var(--graphite-900);color:var(--ceramic-dim);border-top:1px solid var(--line);padding:78px 0 36px;position:relative}
  footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--ember),rgba(209,31,39,0) 55%)}
  .foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid var(--line)}
  .foot-brand .brand{--wm:24px;margin-bottom:20px}
  .foot-brand p{color:var(--muted);font-size:14px;max-width:330px}
  .foot-col h5{font-family:var(--ff-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:20px}
  .foot-col a{display:block;color:var(--ceramic-dim);font-size:14.5px;padding:7px 0;transition:.2s}
  .foot-col a:hover{color:var(--ember);padding-left:5px}
  .foot-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:28px;flex-wrap:wrap;gap:14px}
  .foot-bottom p{font-family:var(--ff-mono);font-size:12px;color:var(--muted-2)}

  /* reveal animation — only hidden when JS is active (progressive enhancement) */
  .js .reveal{opacity:0;transform:translateY(30px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
  .js .reveal.in{opacity:1;transform:none}
  .js .hero .reveal{transition-duration:1s}
  @media (prefers-reduced-motion:reduce){
    .js .reveal{opacity:1;transform:none;transition:none}
    html{scroll-behavior:auto}
    .hero-bg .kiln{animation:none}
    *{animation-duration:.001ms !important;animation-iteration-count:1 !important}
  }

  /* Foco de teclado visível e consistente em toda a navegação e ações */
  a:focus-visible,button:focus-visible,.cta-btn:focus-visible,
  .btn-primary:focus-visible,.btn-ghost:focus-visible{
    outline:2px solid var(--ember);outline-offset:3px;border-radius:3px;
  }

  /* mobile menu panel */
  .mobile-panel{
    position:fixed;inset:0;z-index:1500;background:rgba(241,243,244,.98);backdrop-filter:blur(12px);border-left:none;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
    opacity:0;pointer-events:none;transition:.35s;
  }
  .mobile-panel.open{opacity:1;pointer-events:auto}
  .mobile-panel a{font-family:var(--ff-display);font-weight:700;font-size:30px;text-transform:uppercase;color:var(--ceramic);padding:10px}
  .mobile-panel a:hover{color:var(--ember)}
  .mobile-close{position:absolute;top:28px;right:28px;background:none;border:none;color:var(--ceramic);font-size:34px;cursor:pointer}

  /* ============ RESPONSIVE ============ */
  @media(max-width:1280px){ .menu{gap:24px} .cta-btn{padding:10px 15px;font-size:12px} }
  @media(max-width:1180px){ .menu,.nav-right .cta-btn{display:none} .burger{display:flex} }
  @media(max-width:1024px){
    .hero-inner{grid-template-columns:1fr;gap:44px}
    .hero-card{max-width:520px}
    .props-grid{grid-template-columns:repeat(2,1fr)}
    .prod-grid{grid-template-columns:repeat(2,1fr)}
    .ind-grid{grid-template-columns:repeat(2,1fr)}
    .steps{grid-template-columns:repeat(2,1fr)}
    .about-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
    .foot-top{grid-template-columns:1fr 1fr}
  }
  @media(max-width:680px){
    .wrap{padding:0 20px}
    .menu,.nav-right .cta-btn{display:none}
    .burger{display:flex}
    .pad{padding:80px 0}
    .props-grid,.prod-grid,.ind-grid,.steps,.about-vals,.form-row{grid-template-columns:1fr}
    .hero-strip .hstat{border-right:none;margin-right:0;border-bottom:1px solid var(--line)}
    .foot-top{grid-template-columns:1fr}
    .hero{min-height:auto}
    .hero h1{font-size:clamp(34px,8.6vw,46px)}
  }

  /* ============ HERO CARD IMAGE ============ */
  .hero-card .hc-img{height:158px;margin:-30px -30px 24px;overflow:hidden;border-bottom:1px solid var(--line);position:relative}
  .hero-card .hc-img img{width:100%;height:100%;object-fit:cover}
  .hero-card .hc-img b{position:absolute;left:16px;bottom:12px;z-index:2;font-family:var(--ff-mono);font-weight:400;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:#fff;text-shadow:0 1px 6px rgba(0,0,0,.6)}
  .hero-card .hc-img::after{content:"";position:absolute;inset:0;background:linear-gradient(60deg,rgba(20,14,8,.45),transparent 55%)}

  /* ============ ABOUT IMAGE ============ */
  .about-vis img.factory{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
  .about-vis::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(20,14,8,.12),transparent 45%,rgba(20,14,8,.62));z-index:1}
  .about-vis .lbl{z-index:2;color:#e9e4d8}
  .about-vis .lbl b{color:var(--ember-soft)}

  /* ============ PRODUCT CARD PHOTOS ============ */
  .pcard .pvis{height:190px;display:block;margin:16px 0 22px;border:1px solid var(--line);border-radius:3px;overflow:hidden;background:var(--graphite-800);position:relative}
  .pcard .pvis img{width:100%;height:100%;object-fit:cover;transition:transform .65s cubic-bezier(.2,.7,.2,1)}
  .pcard:hover .pvis img{transform:scale(1.07)}
  .pcard .pvis::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 75% 8%,rgba(209,31,39,.14),transparent 60%);opacity:0;transition:.45s;pointer-events:none}
  .pcard:hover .pvis::after{opacity:1}

  /* ============ MATERIALS / GRADES ============ */
  .mtable-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:4px;background:var(--graphite-900);box-shadow:0 18px 40px -30px rgba(18,22,28,.45)}
  table.mtable{width:100%;border-collapse:collapse;min-width:760px}
  .mtable thead th{font-family:var(--ff-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);text-align:left;padding:20px;border-bottom:1px solid var(--line);white-space:nowrap}
  .mtable thead th:first-child{background:var(--graphite-850)}
  .mtable tbody th{font-family:var(--ff-display);font-weight:800;font-size:21px;text-align:left;padding:22px 20px;color:var(--ceramic);white-space:nowrap;background:var(--graphite-850);border-bottom:1px solid var(--line)}
  .mtable tbody th u{display:block;text-decoration:none;font-family:var(--ff-mono);font-weight:400;font-size:10.5px;letter-spacing:.1em;color:var(--ember);margin-top:6px}
  .mtable td{padding:22px 20px;font-family:var(--ff-mono);font-size:14px;color:var(--ceramic-dim);border-bottom:1px solid var(--line);white-space:nowrap}
  .mtable td:last-child{white-space:normal;min-width:200px;line-height:1.5}
  .mtable tbody tr:last-child td,.mtable tbody tr:last-child th{border-bottom:none}
  .mtable tbody tr{transition:background .25s}
  .mtable tbody tr:hover td{background:var(--graphite-850)}
  .mtable td b{color:var(--ceramic);font-weight:600}
  .mnote{margin-top:18px;font-family:var(--ff-mono);font-size:12px;color:var(--muted-2);letter-spacing:.02em}

  /* ============ VERTICAL INTEGRATION (TECH) ============ */
  .vint{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:26px}
  .vfeat{border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--graphite-850);transition:.4s}
  .vfeat:hover{border-color:var(--ember);transform:translateY(-4px);box-shadow:0 22px 46px -24px rgba(18,22,28,.5)}
  .vfeat .vimg{height:210px;overflow:hidden;position:relative}
  .vfeat .vimg img{width:100%;height:100%;object-fit:cover;transition:transform .65s cubic-bezier(.2,.7,.2,1)}
  .vfeat:hover .vimg img{transform:scale(1.06)}
  .vfeat .vbody{padding:28px}
  .vfeat .vk{font-family:var(--ff-mono);font-size:11px;color:var(--ember);letter-spacing:.12em;text-transform:uppercase}
  .vfeat h4{font-size:20px;text-transform:uppercase;margin:12px 0 12px}
  .vfeat p{color:var(--muted);font-size:14px}

  /* ============ APPLICATIONS GALLERY ============ */
  .gallery{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:210px;gap:13px}
  .gitem{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:3px;background:var(--graphite-800)}
  .gitem img{width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.2,.7,.2,1)}
  .gitem:hover img{transform:scale(1.07)}
  .gitem .cap{position:absolute;inset:auto 0 0 0;padding:18px 18px 16px;background:linear-gradient(transparent,rgba(15,11,6,.86));color:#fff;opacity:0;transform:translateY(10px);transition:.42s}
  .gitem:hover .cap{opacity:1;transform:none}
  .gitem .cap i{font-family:var(--ff-mono);font-style:normal;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ember-soft)}
  .gitem .cap b{display:block;font-family:var(--ff-display);font-weight:700;font-size:16px;margin-top:5px;line-height:1.15}
  .gitem.tall{grid-row:span 2}
  .gitem.wide{grid-column:span 2}

  /* ============ CLIENTS ============ */
  .clients-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
  .client{background:var(--graphite-850);padding:30px 16px;min-height:100px;display:flex;align-items:center;justify-content:center;text-align:center;font-family:var(--ff-display);font-weight:800;font-size:17px;letter-spacing:.02em;color:var(--ceramic-dim);transition:.3s;line-height:1.1}
  .client:hover{background:#fff;color:var(--ember)}
  .client.muted{font-family:var(--ff-mono);font-weight:400;font-size:12.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}

  @media(max-width:1024px){
    .vint{grid-template-columns:1fr 1fr}
    .gallery{grid-template-columns:repeat(2,1fr)}
    .clients-grid{grid-template-columns:repeat(3,1fr)}
  }
  @media(max-width:680px){
    .vint{grid-template-columns:1fr}
    .gallery{grid-template-columns:1fr;grid-auto-rows:200px}
    .gitem.wide{grid-column:span 1}
    .gitem.tall{grid-row:span 1}
    .clients-grid{grid-template-columns:repeat(2,1fr)}
    .hero-card .hc-img{margin:-30px -30px 24px}
  }

/* ==================================================================
   CONTENT PAGES (páginas internas de produto/material/aplicação)
   ================================================================== */
.page-hero{
  position:relative;overflow:hidden;
  padding:150px 0 64px;
  background:linear-gradient(180deg,#f8f9fa 0%,var(--graphite-900) 62%,var(--graphite-850) 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;z-index:3;
  background:linear-gradient(90deg,var(--ember),rgba(209,31,39,0) 55%)}
.page-hero .grid-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:60px 60px;opacity:.55;
  -webkit-mask-image:radial-gradient(ellipse 96% 90% at 50% 0%,#000 20%,transparent 85%);
          mask-image:radial-gradient(ellipse 96% 90% at 50% 0%,#000 20%,transparent 85%);
}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:clamp(34px,4.8vw,64px);text-transform:uppercase;margin:18px 0 20px;max-width:900px}
.page-hero p.lead{font-size:clamp(16px,1.4vw,18.5px);color:var(--ceramic-dim);max-width:720px;font-weight:300}
.page-hero .hero-actions{margin-top:30px}

.breadcrumb{font-family:var(--ff-mono);font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:26px}
.breadcrumb a{color:var(--muted);transition:.2s}
.breadcrumb a:hover{color:var(--ember)}
.breadcrumb .sep{color:var(--muted-2)}
.breadcrumb b{color:var(--ceramic-dim);font-weight:500}

.article{padding:72px 0 96px}
.article .wrap{max-width:960px}
.article h2{font-size:clamp(24px,2.8vw,36px);text-transform:uppercase;margin:56px 0 18px;line-height:1.05}
.article h2:first-child{margin-top:0}
.article h3{font-size:20px;margin:34px 0 12px}
.article p{color:var(--ceramic-dim);margin-bottom:16px;font-size:16.5px;max-width:820px}
.article ul,.article ol{margin:0 0 18px 22px;color:var(--ceramic-dim);font-size:16.5px}
.article li{margin-bottom:8px;max-width:790px}
.article li b,.article p b{color:var(--ceramic);font-weight:600}
.article .mtable-wrap{margin:26px 0}
.article figure{margin:30px 0;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--graphite-850)}
.article figure img{width:100%;max-height:460px;object-fit:cover}
.article figcaption{font-family:var(--ff-mono);font-size:12px;color:var(--muted);padding:12px 16px}
.article .eyebrow{margin-bottom:6px}

/* fatos rápidos no topo do artigo */
.factbox{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin:34px 0 8px}
.factbox .f{background:var(--graphite-850);padding:20px}
.factbox .f b{display:block;font-family:var(--ff-display);font-weight:800;font-size:24px;color:var(--ceramic)}
.factbox .f span{font-family:var(--ff-mono);font-size:11.5px;color:var(--muted)}
@media(max-width:1024px){.factbox{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.factbox{grid-template-columns:1fr}}

/* FAQ (details/summary — indexável e acessível) */
.faq{border:1px solid var(--line);border-radius:4px;background:var(--graphite-900);margin:26px 0}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:none}
.faq summary{
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:18px;align-items:center;
  padding:20px 22px;font-family:var(--ff-display);font-weight:700;font-size:17px;color:var(--ceramic);
  transition:background .25s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--ff-mono);color:var(--ember);font-size:20px;flex:none}
.faq details[open] summary::after{content:"−"}
.faq summary:hover{background:var(--graphite-850)}
.faq .faq-a{padding:0 22px 22px;color:var(--ceramic-dim);font-size:15.5px;max-width:820px}

/* páginas relacionadas */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.rel-card{
  display:block;border:1px solid var(--line);border-radius:4px;background:var(--graphite-900);
  padding:22px;transition:.3s;
}
.rel-card:hover{border-color:var(--ember);transform:translateY(-3px);box-shadow:0 18px 38px -22px rgba(18,22,28,.45)}
.rel-card i{font-family:var(--ff-mono);font-style:normal;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ember)}
.rel-card b{display:block;font-family:var(--ff-display);font-weight:700;font-size:18px;margin:8px 0 6px;text-transform:uppercase}
.rel-card span{color:var(--muted);font-size:13.5px}
@media(max-width:1024px){.rel-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.rel-grid{grid-template-columns:1fr}}

/* Seletor de idioma estático (links) nas páginas internas:
   estado ativo vem do data-lang gravado no <html> pela pré-renderização. */
.lang a{
  display:inline-flex;align-items:center;gap:5px;color:var(--hdr-dim);
  padding:7px 11px;font-family:var(--ff-mono);font-size:12px;letter-spacing:.05em;transition:.2s;
}
.lang a:hover{color:var(--hdr-ink);background:var(--hdr-hover)}
html[data-lang="pt"] .lang a[data-lang-link="pt"],
html[data-lang="en"] .lang a[data-lang-link="en"]{background:var(--ember);color:#fff}
/* variante mobile do seletor (mesmo tamanho dos botões da home) */
.lang-mobile a{font-size:16px;padding:12px 22px;gap:8px;color:var(--ceramic-dim)}
.lang-mobile a:hover{color:var(--ceramic);background:var(--graphite-800)}
.lang-mobile a .fl{font-size:19px}