/* ================================================= */
/* ============== INGENIERÍA LANDING =============== */
/* ================================================= */

:root{
  --text:#1d1d1f;
  --muted:#6e6e73;
  --border:rgba(0,0,0,.06);
  --radius:28px;
}

/* HERO */
.ing-hero{
  padding: 120px 24px 90px;
  text-align:center;
}
.ing-hero h1{
  margin:0 0 16px;
  font-size:54px;
  font-weight:600;
  letter-spacing:-1.5px;
  color:var(--text);
}
.ing-hero p{
  margin:0 auto;
  max-width:760px;
  font-size:20px;
  line-height:1.6;
  color:var(--muted);
}

/* SECTIONS */
.section{
  padding: 70px 24px;
}
.container{
  max-width: 1200px;
  margin: 0 auto;
}

.lead{
  max-width: 920px;
  margin: 0 auto;
  text-align:center;
  font-size:20px;
  line-height:1.7;
  color:var(--text);
}

.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items:stretch;
}

.card{
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: 0 8px 30px rgba(0,0,0,.04), 0 2px 8px rgba(0,0,0,.03);
  transition: transform .5s cubic-bezier(.22,.61,.36,1), box-shadow .5s ease;
}
.card:hover{
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.05);
}
.card h3{
  margin:0 0 10px;
  font-size:20px;
  letter-spacing:-0.3px;
  font-weight:600;
  color:var(--text);
}
.card p{
  margin:0;
  font-size:15px;
  line-height:1.65;
  color:var(--muted);
}

.section-title{
  text-align:center;
  margin:0 0 18px;
  font-size:36px;
  letter-spacing:-0.8px;
  font-weight:600;
  color:var(--text);
}
.section-subtitle{
  text-align:center;
  margin:0 auto 36px;
  max-width: 760px;
  color: var(--muted);
  font-size:18px;
  line-height:1.6;
}

.cta{
  text-align:center;
  padding: 0 24px 110px;
}

.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 14px 28px;
  border-radius: 980px;
  background:#1d1d1f;
  color:#fff;
  font-weight:500;
  font-size:16px;
  transition: all .25s ease;
}
.btn-primary:hover{
  background:#000;
  transform: scale(1.03);
}

/* RESPONSIVE */
@media (max-width: 950px){
  .ing-hero h1{ font-size:44px; }
  .grid-3{ grid-template-columns: 1fr; }
}
@media (max-width: 520px){
  .ing-hero{ padding: 100px 20px 70px; }
  .ing-hero h1{ font-size:36px; }
  .ing-hero p{ font-size:18px; }
}