:root{
  --creme:#F2F0EB;
  --creme-2:#E7E3DA;
  --grafite:#3B3B39;
  --grafite-suave:#6B6B67;
  --taupe:#8B7A66;
  --taupe-claro:#C9B9A4;
  --taupe-escuro:#5C5044;
  --branco:#FBFAF7;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--creme);color:var(--grafite);
  font-family:"Inter","Helvetica Neue",Arial,sans-serif;
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* topo */
.topo{position:sticky;top:0;z-index:20;background:rgba(242,240,235,.92);backdrop-filter:blur(6px);
      border-bottom:1px solid var(--creme-2)}
.topo .barra{max-width:1080px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;
             justify-content:space-between;gap:20px}
.marca{font-weight:800;letter-spacing:-.02em;font-size:19px;text-decoration:none;color:var(--grafite)}
.marca span{color:var(--taupe)}
nav.menu{display:flex;gap:26px;flex-wrap:wrap}
nav.menu a{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;
           text-decoration:none;color:var(--grafite-suave)}
nav.menu a:hover, nav.menu a.ativo{color:var(--taupe)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
     background:var(--taupe);color:var(--branco);border:none;border-radius:6px;
     padding:13px 26px;font-size:13px;font-weight:700;text-transform:uppercase;
     letter-spacing:.08em;text-decoration:none;cursor:pointer;transition:background .15s}
.btn:hover{background:var(--taupe-escuro)}
.btn.fantasma{background:transparent;color:var(--grafite);border:1px solid var(--creme-2)}
.btn.fantasma:hover{background:var(--branco);border-color:var(--taupe)}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* hero */
.hero{background:var(--grafite);color:var(--creme);padding:64px 0 0;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.kicker{font-size:11px;text-transform:uppercase;letter-spacing:.2em;font-weight:700;color:var(--taupe-claro)}
.hero h1{font-size:clamp(30px,4.4vw,48px);font-weight:800;letter-spacing:-.03em;line-height:1.08;
         margin:14px 0 18px;max-width:14ch}
.hero p{font-size:16.5px;color:rgba(242,240,235,.75);max-width:46ch;margin:0 0 28px}
.hero .acoes{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px}

/* hero: vídeo real da persiana abrindo, com foto real como pôster/reserva
   enquanto o vídeo não chega (ver LEIA.md do projeto) */
.janela{position:relative;aspect-ratio:4/5;border-radius:14px;overflow:hidden;
        background:var(--creme-2);box-shadow:0 8px 24px rgba(59,59,57,.18)}
.janela video, .janela img{width:100%;height:100%;object-fit:cover;display:block}

section{padding:64px 0}
h2.titulo{font-size:11px;text-transform:uppercase;letter-spacing:.18em;font-weight:700;
          color:var(--taupe);margin:0 0 12px}
h2.grande{font-size:clamp(24px,3.2vw,32px);font-weight:800;letter-spacing:-.02em;
          color:var(--grafite);margin:0 0 34px;max-width:24ch}
.grid4{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:22px}

.card{background:var(--branco);border-radius:12px;padding:26px;box-shadow:0 2px 8px rgba(59,59,57,.08)}
.card h3{font-size:17px;font-weight:800;margin:0 0 8px;letter-spacing:-.01em}
.card p{font-size:14.5px;color:var(--grafite-suave);margin:0}
.card .tag{display:inline-block;font-size:10px;font-weight:700;text-transform:uppercase;
          letter-spacing:.1em;color:var(--taupe);margin-bottom:10px}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease}
.reveal.mostrar{opacity:1;transform:translateY(0)}

footer{background:var(--grafite);color:rgba(242,240,235,.7);padding:48px 0 30px;margin-top:40px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px}
footer .marca{color:var(--creme)}
footer .col h4{font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:var(--taupe-claro);
               margin:0 0 12px}
footer .col a{display:block;font-size:14px;color:rgba(242,240,235,.72);text-decoration:none;margin-bottom:8px}
footer .col a:hover{color:var(--creme)}
footer .baixo{margin-top:36px;padding-top:20px;border-top:1px solid rgba(242,240,235,.12);
              font-size:12.5px;color:rgba(242,240,235,.5)}

.whats-flutuante{position:fixed;right:20px;bottom:20px;z-index:30;background:var(--taupe);
  color:var(--branco);width:56px;height:56px;border-radius:50%;display:flex;align-items:center;
  justify-content:center;box-shadow:0 6px 16px rgba(59,59,57,.25);text-decoration:none;font-size:24px}

@media (max-width:820px){
  .hero .wrap{grid-template-columns:1fr}
  nav.menu{display:none}
}