:root{
  --bg:#ffffff;
  --text:#142033;
  --muted:#607086;
  --primary:#1b4fa3;
  --primary-dark:#123875;
  --soft:#f4f8ff;
  --line:#dde7f2;
  --shadow:0 14px 40px rgba(18,56,117,.10);
  --radius:20px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial, Helvetica, sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}
a{text-decoration:none;color:inherit}
.container{
  width:min(1120px, calc(100% - 32px));
  margin:0 auto;
}
.topbar{
  background:#f8fbff;
  border-bottom:1px solid var(--line);
}
.topbar-inner, .nav-inner, .footer-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
}
.topbar-inner{padding:10px 0}
.brand-small{font-weight:700}
.top-actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.top-actions a{
  padding:8px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  font-weight:600;
}
.nav{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  min-height:72px;
}
.brand{
  font-size:1.2rem;
  font-weight:800;
  color:var(--primary-dark);
}
.menu{
  list-style:none;
  display:flex;
  gap:22px;
  margin:0;
  padding:0;
}
.menu a{font-weight:600;color:var(--muted)}
.menu-btn{
  display:none;
  border:none;
  background:var(--soft);
  padding:10px 12px;
  border-radius:12px;
  font-size:1.1rem;
}
.hero{
  padding:84px 0 72px;
  background:linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}
.hero-grid, .contact-box{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:28px;
  align-items:start;
}
.tag{
  display:inline-block;
  padding:7px 12px;
  border-radius:999px;
  font-size:.82rem;
  font-weight:700;
  letter-spacing:1px;
  text-transform:uppercase;
  color:var(--primary);
  background:#edf4ff;
  border:1px solid #d8e5fb;
}
.hero h1{
  margin:18px 0 14px;
  font-size:clamp(2.1rem, 5vw, 4rem);
  line-height:1.05;
}
.hero p{
  color:var(--muted);
  font-size:1.08rem;
}
.hero-buttons{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  margin-top:24px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:14px 22px;
  border-radius:14px;
  font-weight:700;
}
.btn.primary{
  background:linear-gradient(135deg, var(--primary), var(--primary-dark));
  color:#fff;
  box-shadow:var(--shadow);
}
.btn.secondary{
  background:#fff;
  color:var(--primary-dark);
  border:1px solid var(--line);
}
.hero-card, .card, .contact-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.hero-card{
  padding:28px;
}
.hero-card h2{margin-top:0}
.hero-card ul{margin:0;padding-left:20px;color:var(--muted)}
.section{
  padding:78px 0;
}
.alt{
  background:#f8fbff;
  border-top:1px solid #eef4fb;
  border-bottom:1px solid #eef4fb;
}
.section-head{
  margin-bottom:24px;
  max-width:760px;
}
.section-head h2{
  margin:14px 0 10px;
  font-size:clamp(1.8rem, 3vw, 2.7rem);
  line-height:1.1;
}
.section-head p{margin:0;color:var(--muted)}
.grid{
  display:grid;
  gap:20px;
}
.cards{grid-template-columns:repeat(3, minmax(0,1fr))}
.card{
  min-height:150px;
  padding:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
}
.card h3{margin:0;font-size:1.08rem}
.materials{grid-template-columns:repeat(4, minmax(0,1fr))}
.material{
  padding:22px 18px;
  border-radius:16px;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:0 10px 25px rgba(18,56,117,.06);
  font-weight:700;
}
.contact-card{
  padding:28px;
}
.phone, .map-link{
  font-size:1.15rem;
  font-weight:800;
  color:var(--primary-dark);
}
.map-note{
  margin-top:14px;
  color:var(--muted);
}
.footer{
  background:#101c2d;
  color:#fff;
  padding:34px 0;
}
.footer h3{margin:0 0 8px}
.footer p{
  margin:0;
  color:rgba(255,255,255,.78);
  max-width:700px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.whatsapp-float{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:40;
  padding:14px 18px;
  border-radius:999px;
  background:#fff;
  color:var(--primary-dark);
  border:1px solid var(--line);
  font-weight:800;
  box-shadow:var(--shadow);
}
@media (max-width: 900px){
  .hero-grid, .contact-box, .cards, .materials, .footer-inner{
    grid-template-columns:1fr;
  }
  .footer-inner{
    display:grid;
  }
}
@media (max-width: 760px){
  .menu-btn{display:block}
  .menu{
    display:none;
    position:absolute;
    left:16px;
    right:16px;
    top:78px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--shadow);
    padding:14px;
    flex-direction:column;
    gap:10px;
  }
  .menu.open{display:flex}
  .topbar-inner, .nav-inner{
    align-items:center;
  }
  .cards, .materials{
    grid-template-columns:1fr;
  }
}