:root{
  --bg:#0a0f14;
  --bg-alt:#121821;
  --text:#1f2937;
  --muted:#6b7280;
  --blue:#0B5ED7;
  --blue-600:#0A58CA;
  --accent:#45a0ff;
  --card:#ffffff;
  --shadow:0 10px 30px rgba(0,0,0,.08);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Helvetica Neue',Arial;
  color:#0f172a;
  background:linear-gradient(180deg,#f3f4f6 0%,#eef2f7 50%,#f8fafc 100%);
}

img{max-width:100%;height:auto;display:block}

.container{width:min(1120px,92%);margin-inline:auto}

.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid #e5e7eb;
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:0.8rem 0;
}
.brand{display:flex;align-items:center;text-decoration:none;color:#111827;gap:.6rem;font-weight:700}
.brand img{width:130px;height:70px}
.nav-toggle{display:none;border:1px solid #e5e7eb;background:#fff;border-radius:10px;padding:.45rem .6rem;box-shadow:var(--shadow)}
.nav ul{display:flex;list-style:none;margin:0;padding:0;gap:1rem}
.nav a{color:#111827;text-decoration:none;font-weight:600;padding:.5rem .75rem;border-radius:12px}
.nav a:hover{background:#eef2ff;color:#1e3a8a}

.btn{display:inline-flex;align-items:center;gap:.5rem;text-decoration:none;font-weight:700;border-radius:14px;padding:.8rem 1.1rem;box-shadow:var(--shadow)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-600)}
.btn-outline{border:2px solid var(--blue);color:var(--blue);background:transparent}
.btn-outline:hover{background:#e8f0ff}
.btn-whatsapp{background:#25D366;color:#111827}
.btn-whatsapp svg{width:18px;height:18px;fill:#111827}

.hero{position:relative;overflow:hidden}
.hero-inner{padding:5.5rem 0 3.5rem}
.hero h1{font-size:clamp(1.8rem,3vw,3rem);line-height:1.1;margin:0 0 .8rem;color:#0b132b}
.hero p{max-width:60ch;color:#334155}
.hero .cta-group{display:flex;gap:.8rem;margin-top:1.2rem}
.hero-bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(600px 280px at 80% 0%, rgba(11,94,215,.18), transparent 60%),
    radial-gradient(400px 200px at 0% 100%, rgba(69,160,255,.20), transparent 60%),
    linear-gradient(180deg, transparent, rgba(11,94,215,.05));
}

.section{padding:4rem 0}
.section.alt{background:#f3f6fb}
.section-header{margin-bottom:1.2rem}
.section-header h2{margin:0 0 .3rem;font-size:1.8rem;color:#0b132b}
.section-header p{color:#475569}

.grid-2{display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;align-items:center}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem}
.card{background:var(--card);padding:1rem;border-radius:16px;box-shadow:var(--shadow)}
.card h3{margin-top:0;color:#0b132b}
.list{margin:0;padding-left:1.2rem;color:#334155}

.feature-media{position:relative}
.feature-media img{border-radius:16px;box-shadow:var(--shadow)}

.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.service{
  background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:1rem;box-shadow:var(--shadow);
}
.service h3{margin-top:0;color:#0b132b}
.service p{color:#475569}

.materials{margin-top:2rem;background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:1.2rem;box-shadow:var(--shadow)}
.materials h3{margin:0 0 .5rem}
.materials-list{margin:.2rem 0 1rem;padding-left:1.2rem;color:#334155}

.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.gallery-grid a{display:block;border-radius:14px;overflow:hidden;border:1px solid #e5e7eb;background:#fff;box-shadow:var(--shadow)}
.gallery-grid img{aspect-ratio:16/10;object-fit:cover}

.map-wrap iframe{width:100%;height:320px;border:0;border-radius:16px;box-shadow:var(--shadow)}

.contact-list{list-style:none;margin:0 0 1rem;padding:0;color:#334155}
.contact-list a{color:var(--blue);text-decoration:none}
.contact-list a:hover{text-decoration:underline}

.site-footer{background:#0f172a;color:#cbd5e1}
.footer-inner{display:flex;flex-direction:column;gap:.3rem;align-items:center;padding:1.2rem 0;text-align:center}
.accent{color:var(--blue)}

@media (max-width: 1024px){
  .cards{grid-template-columns:1fr 1fr}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr}
}

@media (max-width: 640px){
  .nav-toggle{display:block}
  .nav ul{display:none;position:absolute;right:1rem;top:64px;background:#fff;border:1px solid #e5e7eb;border-radius:14px;box-shadow:var(--shadow);padding:.5rem;flex-direction:column}
  .nav ul.show{display:flex}
  .hero-inner{padding:4rem 0 2.2rem}
  .gallery-grid{grid-template-columns:1fr}
}