:root{
  --ink:#0A0A0A;
  --ink-2:#161616;
  --paper:#F4F1EC;
  --bone:#E8E3DA;
  --steel:#3A3F47;
  --ember:#FF4A1C;
  --plasma:#00E0B8;
  --line:rgba(255,255,255,0.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--ink);color:#fff;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.5;overflow-x:hidden}
.mono{font-family:'Courier New',Courier,monospace;letter-spacing:0.05em}
.container{max-width:1280px;margin:0 auto;padding:0 32px}
@media (max-width:640px){.container{padding:0 16px}}

/* I18N */
html[lang="pt"] .en, html[lang="en"] .pt { display: none; }

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(10,10,10,0.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
nav .container{display:flex;align-items:center;justify-content:space-between;padding-top:16px;padding-bottom:16px}
.logo{display:flex;align-items:center;gap:12px}
nav .logo{position:relative;z-index:102}
.logo svg{width:32px;height:32px}
.logo-text{font-size:18px;font-weight:900;letter-spacing:-0.02em}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a:not(.btn){color:#bbb;text-decoration:none;font-size:14px;font-weight:500;transition:color .2s}
.nav-links a:not(.btn):hover{color:#fff}
.lang-toggle{display:flex;gap:0;align-items:center;border:1px solid rgba(255,255,255,0.15);border-radius:2px;overflow:hidden;font-size:11px;letter-spacing:0.1em;font-weight:700}
.lang-toggle button{background:transparent;border:none;color:#888;padding:6px 10px;cursor:pointer;font-family:inherit;font-weight:700;font-size:11px;letter-spacing:0.1em;transition:all .2s}
.lang-toggle button.active{background:var(--ember);color:var(--ink)}
.lang-toggle button:hover:not(.active){color:#fff}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;background:var(--ember);color:var(--ink);text-decoration:none;font-weight:700;font-size:14px;border-radius:2px;border:none;cursor:pointer;transition:transform .15s, background .2s}
.btn:hover{transform:translateY(-1px);background:#ff5d33}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,0.2);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,0.08)}
.btn.dark{background:var(--ink);color:#fff}

/* MOBILE NAV TOGGLE */
.nav-toggle{display:none;width:40px;height:40px;padding:0;background:transparent;border:none;cursor:pointer;position:relative;z-index:102}
.nav-toggle span{display:block;position:absolute;left:8px;right:8px;height:2px;background:#fff;border-radius:2px;transition:transform .2s ease, opacity .2s ease, top .2s ease}
.nav-toggle span:nth-child(1){top:13px}
.nav-toggle span:nth-child(2){top:19px}
.nav-toggle span:nth-child(3){top:25px}
nav.is-open .nav-toggle span:nth-child(1){top:19px;transform:rotate(45deg)}
nav.is-open .nav-toggle span:nth-child(2){opacity:0}
nav.is-open .nav-toggle span:nth-child(3){top:19px;transform:rotate(-45deg)}

/* Body lock when overlay is open */
body.menu-locked{overflow:hidden}

@media (max-width:900px){
  .nav-toggle{display:block}
  nav .container{position:relative;z-index:102}
  .nav-links{
    position:fixed;top:0;left:0;width:100vw;height:100vh;height:100dvh;
    background:var(--ink);
    display:flex;flex-direction:column;align-items:flex-start;justify-content:center;
    gap:28px;padding:96px 32px 48px;z-index:101;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .25s ease, transform .25s ease, visibility .25s ease;
  }
  nav.is-open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-links a:not(.btn){font-size:32px;font-weight:800;color:#fff;letter-spacing:-0.01em}
  .nav-links a.btn{width:100%;justify-content:center;padding:18px 24px;font-size:16px;margin-top:12px}
  .nav-links .lang-toggle{margin-top:8px}
  .nav-links .lang-toggle button{padding:10px 18px;font-size:13px}
}

@media (prefers-reduced-motion:reduce){
  .nav-links,.nav-toggle span{transition:none}
}

/* HERO */
.hero{padding:160px 0 100px;position:relative;overflow:hidden}
.hero-eyebrow{font-size:12px;letter-spacing:0.3em;text-transform:uppercase;color:var(--ember);font-weight:700;margin-bottom:24px}
.hero h1{font-size:clamp(56px,9vw,128px);font-weight:900;letter-spacing:-0.04em;line-height:0.95;margin-bottom:32px;color:#fff}
.hero p.lead{font-size:22px;line-height:1.45;color:#bbb;max-width:680px;margin-bottom:40px}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap}
.hero-bg{position:absolute;right:-100px;top:80px;opacity:0.4;pointer-events:none}
@media (max-width:900px){.hero-bg{display:none}}

/* STAT STRIP */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:48px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.stat .num{font-size:64px;font-weight:900;letter-spacing:-0.04em;line-height:1;color:#fff}
.stat .label{font-size:12px;letter-spacing:0.2em;text-transform:uppercase;color:#888;margin-top:12px;font-weight:600}
@media (max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr)}}

/* SECTIONS */
section.block{padding:120px 0}
.section-eyebrow{font-size:12px;letter-spacing:0.3em;text-transform:uppercase;color:var(--ember);font-weight:700;margin-bottom:20px}
h2{font-size:clamp(40px,5vw,72px);font-weight:900;letter-spacing:-0.03em;line-height:1.05;margin-bottom:24px}
h3{font-size:24px;font-weight:800;letter-spacing:-0.01em;margin-bottom:12px}
.section-lead{font-size:20px;color:#bbb;line-height:1.5;max-width:760px}

/* STEPS */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:60px}
.step{background:var(--ink-2);padding:40px;border-radius:6px;border:1px solid var(--line);position:relative;overflow:hidden}
.step-num{font-size:80px;font-weight:900;color:var(--ember);line-height:1;letter-spacing:-0.05em;opacity:0.9}
.step h3{margin-top:24px}
.step p{color:#aaa;font-size:15px;line-height:1.6}
@media (max-width:768px){.steps{grid-template-columns:1fr}}

/* TECH BENTO */
.bento{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px;margin-top:60px}
.bento-card{background:var(--ink-2);padding:40px;border-radius:6px;border:1px solid var(--line);position:relative;overflow:hidden;min-height:420px}
.bento-card.fdm{background:linear-gradient(135deg,#1a1a1a 0%, #0A0A0A 100%);border-color:rgba(255,74,28,0.2)}
.tech-icon{width:56px;height:56px;margin-bottom:24px}
.bento-card h3{font-size:28px;margin-bottom:12px}
.bento-card .tag{display:inline-block;font-size:10px;letter-spacing:0.2em;text-transform:uppercase;background:var(--ember);color:var(--ink);padding:4px 10px;border-radius:2px;font-weight:700;margin-bottom:20px}
.bento-card p{color:#bbb;line-height:1.6;margin-bottom:14px;font-size:15px}
.bento-card ul{list-style:none;padding:0;margin-top:18px}
.bento-card ul li{padding:5px 0;color:#888;font-size:13px}
.bento-card ul li:before{content:"→ ";color:var(--ember)}
.printer-grid{position:absolute;right:-20px;bottom:-20px;display:grid;grid-template-columns:repeat(10,8px);gap:4px;opacity:0.4}
.printer-grid div{width:8px;height:8px;background:var(--ember)}
@media (max-width:1000px){.bento{grid-template-columns:1fr}}

/* CAPACITY STRIP */
.capacity{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px;padding:24px;background:rgba(255,74,28,0.06);border:1px solid rgba(255,74,28,0.15);border-radius:6px}
.capacity-item .label{font-size:10px;letter-spacing:0.2em;text-transform:uppercase;color:var(--ember);font-weight:700;margin-bottom:4px}
.capacity-item .value{font-size:14px;color:#fff;font-weight:600}

/* SERVICES */
.services{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--line);margin-top:60px;border:1px solid var(--line)}
.service{background:var(--ink);padding:28px 20px;transition:background .2s;cursor:pointer}
.service:hover{background:var(--ink-2)}
.service .price{font-size:10px;letter-spacing:0.15em;text-transform:uppercase;color:#888;margin-bottom:12px;font-weight:600}
.service h3{font-size:18px;margin-bottom:8px}
.service .lead-time{font-size:12px;color:var(--ember);font-weight:700;margin-top:14px}
.service p{font-size:13px;color:#888;line-height:1.5}
@media (max-width:1000px){.services{grid-template-columns:repeat(3,1fr)}}
@media (max-width:600px){.services{grid-template-columns:repeat(2,1fr)}}

/* MATERIALS */
.materials{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:60px}
.material{background:var(--ink-2);padding:24px;border-radius:6px;border:1px solid var(--line)}
.material .swatch{width:100%;height:80px;border-radius:4px;margin-bottom:16px;position:relative;overflow:hidden}
.material .swatch .badge-eco{position:absolute;top:8px;right:8px;background:rgba(0,0,0,0.5);color:#00E0B8;font-size:9px;letter-spacing:0.15em;padding:3px 7px;border-radius:2px;font-weight:700}
.material .name{font-weight:800;font-size:14px;margin-bottom:4px}
.material .desc{font-size:12px;color:#888;line-height:1.5}
.materials-more{margin-top:24px;padding:24px;background:rgba(255,74,28,0.06);border:1px dashed rgba(255,74,28,0.3);border-radius:6px;text-align:center;color:#bbb;font-size:14px}
.materials-more strong{color:#fff}
@media (max-width:768px){.materials{grid-template-columns:repeat(2,1fr)}}

/* QUOTE */
.quote-block{background:linear-gradient(135deg,var(--ember) 0%, #cc3a14 100%);padding:64px;border-radius:8px;margin-top:60px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.quote-block h2{color:#fff;font-size:44px}
.quote-block p{color:rgba(255,255,255,0.9);font-size:17px;line-height:1.5;margin-bottom:18px}
.metalam-tag{display:inline-block;background:rgba(0,0,0,0.25);color:#fff;padding:8px 14px;border-radius:2px;font-size:11px;letter-spacing:0.2em;font-weight:700;margin-top:8px}
.quote-form{background:#fff;padding:32px;border-radius:6px;color:var(--ink)}
.quote-form label{display:block;font-size:11px;letter-spacing:0.15em;text-transform:uppercase;font-weight:700;color:#666;margin-bottom:8px;margin-top:16px}
.quote-form label:first-child{margin-top:0}
.quote-form input,.quote-form select{width:100%;padding:14px;border:2px solid #e0ddd5;border-radius:4px;font-size:15px;font-family:inherit;background:var(--paper);color:var(--ink)}
.upload-zone{border:2px dashed #e0ddd5;padding:32px;text-align:center;border-radius:4px;cursor:pointer;background:var(--paper);transition:border-color .2s}
.upload-zone:hover{border-color:var(--ember)}
.upload-zone .icon{font-size:32px;margin-bottom:8px}
.upload-zone .text{font-size:14px;font-weight:700}
.upload-zone .sub{font-size:12px;color:#666;margin-top:4px}
.upload-zone.has-file{border-color:var(--ember);border-style:solid;background:#fff}
.upload-zone.is-dragover{border-color:var(--ember);background:#fff7f2}
.upload-zone .filename{font-size:13px;color:var(--ink);margin-top:8px;word-break:break-all;font-weight:600}
#formStatus{font-size:13px;margin-top:16px;text-align:center;min-height:18px}
#formStatus.error{color:#b00020}
#formStatus.success{color:#0a7d2c}
.quote-form button[disabled]{opacity:.6;cursor:not-allowed}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;pointer-events:none}
@media (max-width:900px){.quote-block{grid-template-columns:1fr;padding:40px}}
@media (max-width:640px){.quote-block{padding:20px 16px}.quote-form{padding:20px}}

/* CASES */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:60px}
.case{background:var(--ink-2);border-radius:6px;overflow:hidden;border:1px solid var(--line)}
.case-img{aspect-ratio:4/3;background:linear-gradient(135deg,var(--ember),#cc3a14);position:relative;overflow:hidden}
.case-img.alt{background:linear-gradient(135deg,#3A3F47,#1a1a1a)}
.case-img.alt2{background:linear-gradient(135deg,#00E0B8,#007a66)}
.case-img svg{position:absolute;inset:0;margin:auto;opacity:0.85}
.case-body{padding:24px}
.case-tag{font-size:10px;letter-spacing:0.2em;text-transform:uppercase;color:var(--ember);font-weight:700;margin-bottom:8px}
.case h3{font-size:20px;margin-bottom:8px}
.case p{font-size:14px;color:#888;line-height:1.5}
@media (max-width:900px){.cases{grid-template-columns:1fr}}

/* TESTIMONIAL */
.testimonial{background:var(--ink-2);padding:80px;border-radius:8px;margin-top:60px;border:1px solid var(--line)}
.testimonial blockquote{font-size:32px;font-weight:700;letter-spacing:-0.02em;line-height:1.3;margin-bottom:32px;color:#fff}
.testimonial .author{display:flex;align-items:center;gap:16px}
.avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--ember),#cc3a14);display:flex;align-items:center;justify-content:center;font-weight:900;color:#fff}
.author-info .name{font-weight:700;font-size:15px}
.author-info .role{font-size:13px;color:#888}

/* CTA FINAL */
.cta-final{padding:120px 0;text-align:center}
.cta-final h2{font-size:clamp(48px,8vw,112px);margin-bottom:24px}
.cta-final h2 span{color:var(--ember)}
.cta-final .section-lead{margin:0 auto 40px}

/* FOOTER */
footer{background:#000;padding:60px 0 32px;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:60px}
.footer-col h4{font-size:11px;letter-spacing:0.2em;text-transform:uppercase;color:#888;margin-bottom:16px;font-weight:700}
.footer-col a{display:block;color:#bbb;text-decoration:none;font-size:14px;padding:6px 0;transition:color .2s}
.footer-col a:hover{color:var(--ember)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:32px;border-top:1px solid var(--line);font-size:12px;color:#888;letter-spacing:0.05em}
.footer-bottom .by strong{color:#fff}
@media (max-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}.footer-bottom{flex-direction:column;gap:16px;text-align:center}}

/* SUB-PAGE LAYOUT (about, contact, faq) */
.page{padding:160px 0 100px}
.page .section-eyebrow{margin-bottom:20px}
.page-lead{font-size:22px;line-height:1.5;color:#bbb;max-width:760px;margin-top:24px;margin-bottom:48px}
.prose{max-width:760px;color:#bbb;font-size:17px;line-height:1.7}
.prose p{margin-bottom:20px}
.prose strong{color:#fff;font-weight:700}
.prose a{color:var(--ember);text-decoration:none;border-bottom:1px solid rgba(255,74,28,0.4)}
.prose a:hover{border-bottom-color:var(--ember)}

/* FAQ */
.faq-list{margin-top:48px;max-width:860px}
.faq-item{border-top:1px solid var(--line);padding:32px 0}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item h3{font-size:22px;margin-bottom:12px;color:#fff}
.faq-item p{color:#bbb;font-size:16px;line-height:1.7}

/* CONTACT */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:48px;max-width:980px}
.contact-card{background:var(--ink-2);padding:40px;border-radius:6px;border:1px solid var(--line)}
.contact-card h3{font-size:20px;margin-bottom:12px}
.contact-card p{color:#bbb;font-size:15px;line-height:1.6;margin-bottom:16px}
.contact-card a.email{display:inline-block;color:var(--ember);font-weight:700;font-size:17px;text-decoration:none;border-bottom:1px solid rgba(255,74,28,0.4)}
.contact-card a.email:hover{border-bottom-color:var(--ember)}
@media (max-width:768px){.contact-grid{grid-template-columns:1fr}}