:root {
  --grafite: #1f1e1c;
  --grafite-2: #2b2a27;
  --concreto: #b9b2a8;
  --concreto-claro: #e9e5de;
  --areia: #f5f2ed;
  --texto: #2a2926;
  --texto-suave: #6b6760;
  --linha: #d9d3ca;
  --destaque: #8c7b67;
  --largura: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Jost', system-ui, sans-serif;
  font-weight: 300;
  font-size: 17px;
  line-height: 1.65;
  color: var(--texto);
  background: var(--areia);
}
img, svg { display: block; }
a { color: inherit; }
h1, h2, h3 { font-weight: 400; line-height: 1.2; margin: 0; }

/* Topo */
.topo {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 24px;
  padding: 14px max(16px, calc((100% - var(--largura)) / 2));
  background: rgba(31, 30, 28, .92);
  backdrop-filter: blur(8px);
  color: var(--concreto-claro);
}
.marca { display: flex; align-items: center; gap: 10px; text-decoration: none; letter-spacing: .32em; font-weight: 400; }
.topo nav { display: flex; gap: 22px; margin-left: auto; }
.topo nav a { text-decoration: none; font-size: 15px; opacity: .8; }
.topo nav a:hover { opacity: 1; }

/* Botões */
.botao {
  display: inline-block; padding: 14px 26px;
  background: var(--concreto-claro); color: var(--grafite);
  text-decoration: none; letter-spacing: .06em; font-weight: 400;
  border: 1px solid var(--concreto-claro);
  transition: background .2s, color .2s;
}
.botao:hover { background: transparent; color: var(--concreto-claro); }
.botao-contorno { background: transparent; color: var(--concreto-claro); }
.botao-contorno:hover { background: var(--concreto-claro); color: var(--grafite); }
.botao-pequeno { padding: 8px 16px; font-size: 14px; }

/* Abertura */
.hero {
  position: relative; overflow: hidden;
  min-height: 88vh; display: grid; place-items: center;
  background: var(--grafite); color: var(--concreto-claro);
  text-align: center; padding: 80px 16px;
}
.hero-textura {
  position: absolute; inset: 0; opacity: .5;
  background:
    repeating-linear-gradient(0deg, transparent 0 58px, rgba(0,0,0,.35) 58px 60px),
    linear-gradient(115deg, #3a3834 0%, #26241f 45%, #3b3934 100%);
}
.hero-textura::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 40%, transparent 0%, rgba(20,19,17,.85) 75%);
}
.hero-conteudo { position: relative; max-width: 760px; }
.hero-logo { margin: 0 auto 18px; width: 96px; height: 96px; }
.hero h1 { font-size: clamp(2.6rem, 9vw, 5.2rem); letter-spacing: .3em; margin-right: -.3em; font-weight: 300; }
.assinatura { text-transform: uppercase; letter-spacing: .45em; font-size: 13px; opacity: .75; margin: 6px 0 36px; }
.frase { font-size: clamp(1.4rem, 3.4vw, 2rem); margin: 0 0 12px; }
.sub { opacity: .75; margin: 0 0 36px; }
.acoes { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* Seções */
.secao { padding: 96px max(16px, calc((100% - var(--largura)) / 2)); }
.secao h2 { font-size: clamp(1.7rem, 4vw, 2.5rem); margin-bottom: 18px; max-width: 760px; }
.rotulo { text-transform: uppercase; letter-spacing: .3em; font-size: 13px; color: var(--destaque); margin: 0 0 12px; }
.intro { max-width: 680px; color: var(--texto-suave); margin: 0 0 48px; }
.secao-escura { background: var(--grafite); color: var(--concreto-claro); }
.secao-escura .rotulo { color: var(--concreto); }

/* Produtos */
.cartoes { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.cartao { background: #fff; border: 1px solid var(--linha); }
.cartao h3 { font-size: 1.35rem; padding: 22px 24px 6px; }
.cartao p { padding: 0 24px 26px; margin: 0; color: var(--texto-suave); }
.foto { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; background: #a9a297; }
.cartoes-dois { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); max-width: 960px; }

/* Aplicações */
.aplicacoes { list-style: none; padding: 0; margin: 40px 0 56px; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 0; border-top: 1px solid rgba(233,229,222,.2); }
.aplicacoes li { padding: 26px 24px 26px 0; border-bottom: 1px solid rgba(233,229,222,.2); }
.aplicacoes strong { display: block; font-weight: 400; font-size: 1.3rem; margin-bottom: 6px; }
.aplicacoes span { opacity: .75; }
.vantagens { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 28px; }
.vantagens h3 { font-size: 1.05rem; letter-spacing: .12em; text-transform: uppercase; color: var(--concreto); margin-bottom: 6px; }
.vantagens p { margin: 0; opacity: .8; }

/* Sobre */
.colunas { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 32px; color: var(--texto-suave); }
.colunas p { margin: 0; }
.passos { list-style: none; padding: 0; margin: 56px 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.passos li { background: var(--concreto-claro); padding: 24px; color: var(--texto-suave); }
.passos span { display: block; font-size: 2rem; color: var(--destaque); line-height: 1; margin-bottom: 10px; }
.passos strong { display: block; color: var(--texto); font-weight: 400; font-size: 1.1rem; margin-bottom: 4px; }

/* Contato */
.secao-contato { background: var(--concreto-claro); }
.contatos { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 36px; }
.contato {
  display: flex; align-items: center; gap: 16px; padding: 22px;
  background: #fff; border: 1px solid var(--linha); text-decoration: none;
  transition: border-color .2s, transform .2s;
}
.contato:hover { border-color: var(--destaque); transform: translateY(-2px); }
.contato svg { width: 30px; height: 30px; flex: none; fill: var(--grafite); }
.contato strong { display: block; font-weight: 400; }
.contato em { font-style: normal; color: var(--texto-suave); font-size: 15px; overflow-wrap: anywhere; }

/* Rodapé */
.rodape { background: var(--grafite); color: var(--concreto); padding: 48px 16px; text-align: center; }
.rodape .marca { justify-content: center; color: var(--concreto-claro); margin-bottom: 8px; }
.rodape p { margin: 4px 0; }
.rodape .legal { font-size: 13px; opacity: .7; }

/* WhatsApp flutuante */
.whatsapp-flutuante {
  position: fixed; right: 18px; bottom: 18px; z-index: 20;
  width: 58px; height: 58px; border-radius: 50%;
  display: grid; place-items: center;
  background: #25d366; box-shadow: 0 6px 18px rgba(0,0,0,.25);
}
.whatsapp-flutuante svg { width: 30px; height: 30px; fill: #fff; }

@media (max-width: 720px) {
  .topo nav { display: none; }
  .topo .botao-pequeno { margin-left: auto; }
  .secao { padding-top: 72px; padding-bottom: 72px; }
}

/* Sócios */
.socios { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-top: 48px; }
.socio { border-top: 2px solid var(--destaque); padding-top: 18px; }
.socio h3 { font-size: 1.4rem; }
.socio .cargo { text-transform: uppercase; letter-spacing: .14em; font-size: 13px; color: var(--destaque); margin: 4px 0 10px; }
.socio p { margin: 0; color: var(--texto-suave); }

/* Projetos realizados */
.projetos { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.projeto { margin: 0; background: #fff; border: 1px solid var(--linha); overflow: hidden; }
.projeto img { width: 100%; height: 100%; object-fit: cover; display: block; }
.projeto-alto img { aspect-ratio: 3 / 4; }
.projeto-largo { grid-column: 1 / -1; }
.projeto-largo img { aspect-ratio: 5 / 2; }
.projeto figcaption { padding: 14px 18px; display: flex; flex-direction: column; }
.projeto figcaption strong { font-weight: 400; font-size: 1.15rem; }
.projeto figcaption span { color: var(--texto-suave); font-size: 15px; }
@media (max-width: 720px) {
  .projetos { grid-template-columns: 1fr; }
  .projeto-largo img { aspect-ratio: 16 / 9; }
}