/* RZ Infra — estilo principal */
:root{
  --laranja:#F26B1D;
  --laranja-escuro:#D4560F;
  --cinza-900:#1F2226;
  --cinza-800:#2B2F34;
  --cinza-700:#3C4148;
  --cinza-500:#6B7280;
  --cinza-300:#D3D6DB;
  --cinza-100:#F3F4F6;
  --branco:#FFFFFF;
  --raio:14px;
  --sombra:0 10px 30px rgba(31,34,38,.10);
  --max:1180px;
  --fonte:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--fonte);color:var(--cinza-800);background:var(--branco);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.15;color:var(--cinza-900);font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.5vw,3.4rem)}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:1.2rem}
p{margin-bottom:1rem}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.secao{padding:84px 0}
.secao--cinza{background:var(--cinza-100)}
.secao--escura{background:var(--cinza-900);color:#E5E7EB}
.secao--escura h2,.secao--escura h3{color:#fff}
.rotulo{display:inline-block;color:var(--laranja);font-weight:700;text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;margin-bottom:12px}
.titulo-secao{max-width:720px;margin-bottom:40px}
.titulo-secao p{color:var(--cinza-500);font-size:1.08rem}
.centro{text-align:center;margin-left:auto;margin-right:auto}

/* Botões */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:999px;font-weight:700;font-size:.98rem;transition:.2s;border:2px solid transparent;cursor:pointer;font-family:inherit}
.btn--laranja{background:var(--laranja);color:#fff}
.btn--laranja:hover{background:var(--laranja-escuro);transform:translateY(-1px)}
.btn--contorno{border-color:#fff;color:#fff}
.btn--contorno:hover{background:#fff;color:var(--cinza-900)}
.btn--escuro{border-color:var(--cinza-900);color:var(--cinza-900)}
.btn--escuro:hover{background:var(--cinza-900);color:#fff}
.btn svg{width:20px;height:20px}

/* Cabeçalho */
.topo{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--cinza-100)}
.topo__inner{display:flex;align-items:center;justify-content:space-between;height:78px}
.logo img{height:46px;width:auto}
.menu{display:flex;align-items:center;gap:30px}
.menu a{font-weight:600;font-size:.95rem;color:var(--cinza-700);position:relative;padding:6px 0}
.menu a:hover,.menu a.ativo{color:var(--laranja)}
.menu a.ativo::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--laranja)}
.menu .btn{padding:11px 20px;font-size:.9rem}
.hamburger{display:none;background:none;border:0;cursor:pointer;padding:8px}
.hamburger span{display:block;width:26px;height:3px;background:var(--cinza-900);margin:5px 0;border-radius:2px;transition:.2s}

/* Hero */
.hero{position:relative;min-height:88vh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(31,34,38,.88) 0%,rgba(31,34,38,.65) 55%,rgba(31,34,38,.25) 100%);z-index:1}
.hero .container{position:relative;z-index:2;padding-top:60px;padding-bottom:60px}
.hero h1{color:#fff;max-width:760px;margin-bottom:20px}
.hero h1 em{color:var(--laranja);font-style:normal}
.hero p{font-size:1.15rem;max-width:620px;color:#E5E7EB;margin-bottom:34px}
.hero__acoes{display:flex;gap:14px;flex-wrap:wrap}
.hero__tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:40px}
.hero__tags span{border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:6px 14px;font-size:.85rem;color:#E5E7EB}

/* Hero interno */
.hero--interno{min-height:46vh}
.hero--interno .container{padding-top:40px;padding-bottom:40px}
.migalhas{font-size:.85rem;color:#D1D5DB;margin-bottom:14px}
.migalhas a:hover{color:var(--laranja)}

/* Números */
.numeros{background:var(--laranja);color:#fff;padding:36px 0}
.numeros__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.numero{padding:10px}
.numero strong{display:block;font-size:2.4rem;font-weight:800;line-height:1}
.numero span{display:block;font-size:.9rem;opacity:.92;margin-top:8px}

/* Grid de cards */
.grid{display:grid;gap:24px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border-radius:var(--raio);padding:30px;box-shadow:var(--sombra);transition:.25s;border:1px solid transparent;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);border-color:var(--laranja)}
.card__icone{width:54px;height:54px;border-radius:12px;background:rgba(242,107,29,.12);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.card__icone svg{width:28px;height:28px;stroke:var(--laranja);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card h3{margin-bottom:10px}
.card p{color:var(--cinza-500);font-size:.96rem;flex:1}
.card .link{color:var(--laranja);font-weight:700;font-size:.92rem}
.card .link:hover{text-decoration:underline}

/* Serviço — página */
.servico-layout{display:grid;grid-template-columns:1.3fr .8fr;gap:48px;align-items:start}
.servico-layout .texto p{font-size:1.05rem}
.lista-check li{padding:8px 0 8px 32px;position:relative}
.lista-check li::before{content:"✓";position:absolute;left:0;top:10px;width:20px;height:20px;border-radius:50%;background:var(--laranja);color:#fff;font-size:.75rem;font-weight:800;display:flex;align-items:center;justify-content:center}
.lateral{position:sticky;top:100px}
.caixa{background:var(--cinza-100);border-radius:var(--raio);padding:28px;margin-bottom:20px}
.caixa h3{margin-bottom:12px}
.caixa ul li{padding:8px 0;border-bottom:1px solid var(--cinza-300)}
.caixa ul li:last-child{border:0}
.caixa ul li a:hover{color:var(--laranja)}
.caixa ul li a.ativo{color:var(--laranja);font-weight:700}
.caixa--laranja{background:var(--laranja);color:#fff}
.caixa--laranja h3{color:#fff}
.caixa--laranja .btn{background:#fff;color:var(--laranja);margin-top:8px}

/* Imagem com legenda */
.figura{border-radius:var(--raio);overflow:hidden;box-shadow:var(--sombra)}
.figura img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.figura figcaption{font-size:.85rem;color:var(--cinza-500);padding:10px 14px;background:#fff}

/* Duas colunas texto + imagem */
.duas{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.duas p{font-size:1.05rem;color:var(--cinza-700)}
.duas .figura img{aspect-ratio:4/3}

/* Tecnologia */
.tec-item{display:flex;gap:18px;align-items:flex-start;padding:22px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.tec-item:last-child{border:0}
.tec-item .num{flex:0 0 46px;height:46px;border-radius:12px;background:var(--laranja);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
.tec-item h3{margin-bottom:6px}
.tec-item p{color:#C9CDD3;margin:0}

/* Obras */
.obra{background:#fff;border-radius:var(--raio);overflow:hidden;box-shadow:var(--sombra);display:flex;flex-direction:column}
.obra img{width:100%;aspect-ratio:16/10;object-fit:cover}
.obra__corpo{padding:24px}
.obra__meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.obra__meta span{background:var(--cinza-100);border-radius:999px;padding:4px 12px;font-size:.78rem;font-weight:600;color:var(--cinza-700)}
.obra__meta span.cliente{background:rgba(242,107,29,.12);color:var(--laranja-escuro)}
.obra h3{margin-bottom:8px}
.obra p{color:var(--cinza-500);font-size:.95rem;margin:0}
.obra__escopo{margin-top:14px;display:flex;gap:6px;flex-wrap:wrap}
.obra__escopo li{font-size:.78rem;border:1px solid var(--cinza-300);border-radius:6px;padding:3px 8px;color:var(--cinza-700)}

/* Clientes */
.logos{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.logos div{background:#fff;border-radius:12px;padding:22px;display:flex;align-items:center;justify-content:center;min-height:110px;box-shadow:var(--sombra)}
.logos img{max-height:64px;width:auto;filter:grayscale(1);opacity:.75;transition:.2s}
.logos div:hover img{filter:none;opacity:1}

/* CTA faixa */
.cta{background:linear-gradient(120deg,var(--cinza-900),var(--cinza-700));color:#fff;padding:70px 0}
.cta__inner{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.cta h2{color:#fff;margin-bottom:8px}
.cta p{color:#D1D5DB;margin:0;max-width:560px}

/* Contato */
.contato-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.form label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px;margin-top:16px}
.form input,.form select,.form textarea{width:100%;padding:13px 14px;border:1px solid var(--cinza-300);border-radius:10px;font:inherit;font-size:.98rem;background:#fff}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--laranja);border-color:transparent}
.form textarea{min-height:130px;resize:vertical}
.form .obrig{color:var(--laranja)}
.form small{display:block;color:var(--cinza-500);margin-top:10px;font-size:.82rem}
.form .btn{margin-top:22px}
.hp{position:absolute;left:-9999px}
.info-contato li{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--cinza-300)}
.info-contato li:last-child{border:0}
.info-contato svg{width:24px;height:24px;stroke:var(--laranja);fill:none;stroke-width:1.8;flex:0 0 24px;margin-top:2px}
.info-contato strong{display:block;color:var(--cinza-900)}
.info-contato a:hover{color:var(--laranja)}
.mapa{margin-top:24px;border-radius:var(--raio);overflow:hidden;box-shadow:var(--sombra)}
.mapa iframe{width:100%;height:280px;border:0;display:block}
.aviso{padding:16px 18px;border-radius:10px;margin-top:16px;font-weight:600}
.aviso--ok{background:#DCFCE7;color:#166534}
.aviso--erro{background:#FEE2E2;color:#991B1B}

/* Rodapé */
.rodape{background:var(--cinza-900);color:#B9BEC6;padding:64px 0 0;font-size:.93rem}
.rodape__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.rodape h4{color:#fff;font-size:.95rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:16px}
.rodape li{margin-bottom:9px}
.rodape a:hover{color:var(--laranja)}
.rodape .logo img{height:52px;margin-bottom:16px;background:#fff;padding:6px 10px;border-radius:8px}
.rodape p{margin-bottom:10px}
.social{display:flex;gap:10px;margin-top:14px}
.social a{width:40px;height:40px;border-radius:10px;background:var(--cinza-800);display:flex;align-items:center;justify-content:center}
.social a:hover{background:var(--laranja);color:#fff}
.social svg{width:20px;height:20px;fill:currentColor}
.rodape__base{border-top:1px solid var(--cinza-800);margin-top:48px;padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.83rem}

/* WhatsApp flutuante */
.zap{position:fixed;right:22px;bottom:22px;z-index:60;width:60px;height:60px;border-radius:50%;background:#25D366;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,0,0,.25);transition:.2s}
.zap:hover{transform:scale(1.07)}
.zap svg{width:32px;height:32px;fill:#fff}

/* Página 404 / privacidade */
.texto-longo{max-width:800px}
.texto-longo h2{font-size:1.4rem;margin:32px 0 10px}

/* Animação de entrada */
.rev{opacity:0;transform:translateY(18px);transition:.6s ease}
.rev.on{opacity:1;transform:none}

/* Responsivo */
@media (max-width:980px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,1fr)}
  .logos{grid-template-columns:repeat(3,1fr)}
  .numeros__grid{grid-template-columns:repeat(2,1fr)}
  .rodape__grid{grid-template-columns:1fr 1fr}
  .servico-layout,.duas,.contato-grid{grid-template-columns:1fr}
  .lateral{position:static}
}
@media (max-width:720px){
  .secao{padding:60px 0}
  .grid--3,.grid--4,.grid--2{grid-template-columns:1fr}
  .logos{grid-template-columns:repeat(2,1fr)}
  .rodape__grid{grid-template-columns:1fr}
  .hamburger{display:block}
  .menu{position:fixed;inset:78px 0 0 0;background:#fff;flex-direction:column;align-items:flex-start;padding:28px 24px;gap:22px;transform:translateX(100%);transition:.25s;overflow:auto}
  .menu.aberto{transform:none}
  .menu a{font-size:1.1rem}
  .hero{min-height:70vh}
  .hero--interno{min-height:auto}
  .numero strong{font-size:2rem}
}
html,body{overflow-x:hidden}
@media (max-width:720px){.menu{visibility:hidden}.menu.aberto{visibility:visible}}
.hero .container{width:100%}
.figura--retrato{max-width:400px;margin-left:auto;margin-right:auto}
.figura--retrato img{aspect-ratio:3/4}
.duas .figura--retrato img,.servico-layout .figura--retrato img{aspect-ratio:3/4}
.numero strong.destaque{font-size:1.6rem}