:root{
  --bg:#0d0d0f;
  --bg-soft:#141518;
  --card:#111214;
  --text:#f5f5f5;
  --muted:#aeb3bb;
  --gold:#d4af37;
  --gold-dark:#a98218;
  --silver:#d7dadd;
  --white:#f7f7f7;
  --border:rgba(212,175,55,.18);
  --radius:28px;
  --shadow:0 18px 60px rgba(0,0,0,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:'Montserrat',sans-serif;line-height:1.6}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:min(1180px,92vw);margin:0 auto}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 4vw;background:#090a0b;border-bottom:1px solid rgba(255,255,255,.05);font-size:13px;color:#cfcfcf}
.topbar a{color:var(--gold);font-weight:700}
.header{position:sticky;top:0;z-index:50;background:rgba(9,10,11,.84);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav{display:flex;align-items:center;justify-content:space-between;height:84px;gap:18px}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{display:grid;place-items:center;width:56px;height:56px;border-radius:18px;font-family:'Exo 2';font-weight:800;font-size:24px;letter-spacing:-3px;color:var(--silver);background:linear-gradient(145deg,#303238,#08090b);box-shadow:inset 0 0 0 1px rgba(255,255,255,.05),0 0 25px rgba(212,175,55,.15)}
.brand-text{display:flex;flex-direction:column;line-height:1.1;text-transform:uppercase;letter-spacing:2px}
.brand-text strong{font-family:'Exo 2';font-size:17px}
.brand-text small{font-size:10px;color:var(--muted);letter-spacing:1.5px}
.nav-links{display:flex;align-items:center;gap:28px;font-size:14px;color:#ddd}
.nav-links a{position:relative}
.nav-links a:after{content:"";position:absolute;left:0;bottom:-7px;width:0;height:1px;background:var(--gold);transition:.25s}
.nav-links a:hover:after{width:100%}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:15px 24px;border-radius:999px;border:1px solid var(--gold);background:linear-gradient(135deg,#e3c460,#a98218);color:#101010;font-weight:800;letter-spacing:.3px;box-shadow:0 12px 32px rgba(212,175,55,.22);transition:.25s}
.btn:hover{transform:translateY(-2px);box-shadow:0 18px 46px rgba(212,175,55,.32)}
.btn-small{padding:10px 16px;font-size:13px}
.btn-ghost{background:transparent;color:var(--white);border-color:rgba(255,255,255,.18);box-shadow:none}
.menu-btn{display:none;background:none;border:0;flex-direction:column;gap:5px}
.menu-btn span{width:26px;height:2px;background:#fff}
.hero{position:relative;min-height:670px;display:grid;align-items:center;isolation:isolate;overflow:hidden;padding:48px 0 82px}
.hero-bg{position:absolute;inset:0;background:linear-gradient(100deg,rgba(13,13,15,.88),rgba(13,13,15,.62),rgba(13,13,15,.76)),url('../img/fachada-vale-do-aco.jpg') center/cover;z-index:-2}
.hero:after{content:"";position:absolute;inset:auto auto 0 0;width:60%;height:240px;background:radial-gradient(circle at left bottom,rgba(212,175,55,.10),transparent 65%);z-index:-1}
.hero-grid{display:grid;grid-template-columns:1fr;gap:0;align-items:center}
.hero-content{max-width:760px;padding:42px;border-radius:32px;border:1px solid rgba(255,255,255,.08);background:rgba(9,10,11,.38);backdrop-filter:blur(8px);box-shadow:var(--shadow)}
.eyebrow{color:var(--gold);text-transform:uppercase;letter-spacing:3px;font-size:12px;font-weight:800;margin:0 0 16px}
.hero h1,.section h2{font-family:'Exo 2';font-weight:800;line-height:1.02;letter-spacing:-1.5px}
.hero h1{font-size:clamp(40px,6vw,72px);margin:0 0 18px;max-width:700px}
.hero-subtitle{font-size:18px;color:#d4d4d4;max-width:620px;margin:0}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.hero-badges span{border:1px solid rgba(255,255,255,.10);background:rgba(255,255,255,.04);padding:9px 13px;border-radius:999px;color:#ddd;font-size:13px}
.quick-lines{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:-38px;position:relative;z-index:3}
.quick-lines article{background:linear-gradient(180deg,#1b1d21,#111214);border:1px solid var(--border);border-radius:22px;padding:24px;box-shadow:var(--shadow)}
.quick-lines span,.step span{color:var(--gold);font-family:'Exo 2';font-weight:800}
.quick-lines h3,.product-card h3,.step h3{font-family:'Exo 2';font-size:24px;margin:8px 0}
.quick-lines p,.product-card p,.step p{color:#bebebe;margin:0}
.section{padding:110px 0}
.stats-section{background:linear-gradient(180deg,#0d0d0f,#151619)}
.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.section h2{font-size:clamp(34px,4.6vw,58px);margin:0 0 18px}
.stats-grid p,.section-head p,.about-copy>p,.contact-info p,.testimonials p{color:#c4c4c4}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.stats div{padding:28px 18px;border:1px solid var(--border);border-radius:22px;background:rgba(255,255,255,.045);text-align:center}
.stats strong{font-family:'Exo 2';font-size:46px;color:var(--silver);display:block}
.stats span{font-size:13px;color:var(--gold);text-transform:uppercase;letter-spacing:1.5px}
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:58px;align-items:center}
.about-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow)}
.features{display:grid;gap:16px;margin-top:28px}
.features div{padding:18px;border:1px solid rgba(255,255,255,.1);border-left:3px solid var(--gold);border-radius:18px;background:rgba(255,255,255,.04)}
.features span{font-weight:800;color:var(--gold)}
.features p{margin:4px 0 0;color:#bbb}
.section-head{max-width:740px;margin-bottom:44px}
.products{background:radial-gradient(circle at 80% 10%,rgba(212,175,55,.14),transparent 35%),#111214}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.product-card{min-height:280px;padding:28px;border-radius:22px;border:1px solid rgba(255,255,255,.1);background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.025));transition:.25s;position:relative;overflow:hidden}
.product-card:after{content:"";position:absolute;inset:auto -30% -45% -30%;height:180px;background:radial-gradient(circle,rgba(212,175,55,.14),transparent 70%)}
.product-card:hover{transform:translateY(-6px);border-color:var(--border)}
.icon{font-size:42px;color:var(--gold);line-height:1}
.product-card a{color:var(--gold);font-weight:800;margin-top:22px;display:inline-block}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.filter{padding:10px 16px;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:transparent;color:#eee;cursor:pointer}
.filter.active{background:var(--gold);color:#111;font-weight:800}
.gallery-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;grid-auto-rows:260px;gap:16px}
.gallery-item{border-radius:22px;overflow:hidden;border:1px solid rgba(255,255,255,.1);cursor:zoom-in}
.gallery-item:first-child{grid-row:span 2}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:.35s}
.gallery-item:hover img{transform:scale(1.05)}
.process{background:#141518}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.step{padding:26px;border-radius:22px;border:1px solid var(--border);background:#0f1012}
.step span{font-size:42px}
.testimonials-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:center}
.testimonial-card{position:relative;border:1px solid var(--border);border-radius:var(--radius);padding:50px;background:linear-gradient(145deg,rgba(255,255,255,.08),rgba(255,255,255,.025));box-shadow:var(--shadow)}
blockquote{font-size:25px;font-family:'Exo 2';margin:0 0 22px}
.arrow{position:absolute;top:50%;translate:0 -50%;width:42px;height:42px;border-radius:50%;border:1px solid var(--border);background:#111;color:#fff;font-size:28px;cursor:pointer}
.prev{left:-21px}
.next{right:-21px}
.contact{background:linear-gradient(180deg,#111214,#0d0d0f)}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:54px}
.contact-list{display:grid;gap:12px;margin-top:28px}
.contact-list a,.contact-list div{padding:18px;border:1px solid rgba(255,255,255,.1);border-radius:18px;background:rgba(255,255,255,.04);display:flex;justify-content:space-between;gap:20px}
.contact-list strong{color:var(--gold)}
.contact-list span{color:#ccc}
.contact-form{padding:30px;border-radius:var(--radius);border:1px solid var(--border);background:rgba(255,255,255,.05);box-shadow:var(--shadow);display:grid;gap:16px}
.contact-form label{display:grid;gap:8px;color:#ddd;font-weight:700}
.contact-form input,.contact-form textarea{width:100%;border:1px solid rgba(255,255,255,.12);background:#0b0c0e;color:#fff;border-radius:14px;padding:15px;font:inherit}
.contact-form input:focus,.contact-form textarea:focus{outline:1px solid var(--gold)}
.contact-form small{color:#aaa}
.footer{background:#090a0b;border-top:1px solid var(--border);padding:52px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:38px}
.footer p{color:#bbb}
.footer h4{color:var(--gold);text-transform:uppercase;letter-spacing:2px}
.footer a{display:block;color:#cfcfcf;margin:8px 0}
.copyright{text-align:center;border-top:1px solid rgba(255,255,255,.08);margin-top:36px;padding:18px;color:#888;font-size:14px}
.floating-whatsapp{position:fixed;right:20px;bottom:20px;z-index:120;background:#25d366;color:#07120a;font-weight:900;border-radius:999px;padding:15px 20px;box-shadow:0 15px 40px rgba(37,211,102,.28)}
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:200;display:none;align-items:center;justify-content:center;padding:24px}
.lightbox.open{display:flex}
.lightbox img{max-height:86vh;border-radius:18px}
.lightbox button{position:absolute;right:30px;top:24px;background:none;border:0;color:white;font-size:46px;cursor:pointer}
.reveal{opacity:0;transform:translateY(28px);transition:.7s ease}
.reveal.visible{opacity:1;transform:none}
.delay-1{transition-delay:.15s}
@media(max-width:980px){
  .menu-btn{display:flex}
  .nav-links{position:absolute;top:82px;left:0;right:0;background:#0d0d0f;border-bottom:1px solid var(--border);padding:20px;display:none;flex-direction:column}
  .nav-links.open{display:flex}
  .nav>.btn{display:none}
  .hero-grid,.stats-grid,.about-grid,.testimonials-grid,.contact-grid{grid-template-columns:1fr}
  .quick-lines,.product-grid,.process-grid{grid-template-columns:repeat(2,1fr)}
  .gallery-grid{grid-template-columns:1fr 1fr}
  .hero{padding:72px 0 70px;min-height:unset}
  .hero-content{padding:34px}
}
@media(max-width:620px){
  .topbar{flex-direction:column;gap:2px;text-align:center}
  .nav{height:74px}
  .brand-text small{display:none}
  .hero h1{font-size:40px}
  .hero-subtitle{font-size:16px}
  .quick-lines,.product-grid,.process-grid,.stats,.footer-grid,.gallery-grid{grid-template-columns:1fr}
  .quick-lines{margin-top:0;padding-top:26px}
  .section{padding:76px 0}
  .contact-list a,.contact-list div{flex-direction:column;gap:4px}
  .testimonial-card{padding:32px}
  .arrow{display:none}
  .hero-content{padding:26px;border-radius:24px}
}