:root{
  --primary:#f15a24;
  --primary-dark:#d94812;
  --accent:#ffb000;
  --ink:#1c2420;
  --muted:#60706a;
  --light:#fff7f2;
  --white:#ffffff;
  --line:#f1d8cd;
  --shadow:0 22px 70px rgba(36,24,18,.14);
  --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Open Sans',Arial,sans-serif;color:var(--ink);background:var(--white);line-height:1.6}
a{color:inherit;text-decoration:none}.container{width:min(1140px,92vw);margin:0 auto}
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{min-height:88px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;margin-right:auto}.brand-logo{height:66px;width:auto;display:block;object-fit:contain}.nav-links{display:flex;align-items:center;gap:24px;font-weight:700;font-size:14px}.nav-links a:hover{color:var(--primary)}.menu-toggle{display:none;border:0;background:var(--light);font-size:24px;border-radius:12px;padding:8px 12px}
.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:999px;padding:14px 22px;font-weight:800;cursor:pointer;transition:.25s ease;font-family:'Open Sans'}
.btn-primary{background:linear-gradient(135deg,var(--primary),#ff6b00);color:#fff;box-shadow:0 14px 30px rgba(241,90,36,.28)}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-dark),var(--primary));transform:translateY(-2px)}
.btn-secondary{background:#fff;color:var(--primary);border:1px solid var(--line)}.btn-secondary:hover{border-color:var(--primary);transform:translateY(-2px)}
.hero{position:relative;overflow:hidden;padding:92px 0 72px;background:linear-gradient(130deg,#fff8f4 0%,#fff1e8 55%,#fff 100%)}.hero-bg{position:absolute;inset:0;background:radial-gradient(circle at 78% 22%,rgba(255,176,0,.25),transparent 28%),radial-gradient(circle at 15% 85%,rgba(241,90,36,.14),transparent 25%);pointer-events:none}.hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:42px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:800;color:var(--primary);text-transform:uppercase;font-size:12px;letter-spacing:.12em}.eyebrow:before{content:"";width:30px;height:3px;background:var(--accent);border-radius:10px}
h1,h2,h3{font-family:'Montserrat',Arial,sans-serif;line-height:1.12;margin:0 0 16px}h1{font-size:clamp(42px,6vw,72px);letter-spacing:-.04em}h2{font-size:clamp(30px,4vw,46px);letter-spacing:-.03em}h3{font-size:21px}.lead{font-size:20px;color:#40352f;max-width:680px}.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0}.trust-row{display:flex;flex-wrap:wrap;gap:16px}.trust-row div{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 18px;box-shadow:0 10px 26px rgba(36,24,18,.06)}.trust-row strong{font:800 24px 'Montserrat';color:var(--primary)}.trust-row span{display:block;color:var(--muted);font-size:13px}.hero-card{background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px}.hero-card ul{padding-left:20px;margin:18px 0 26px}.hero-card li{margin:10px 0}.whatsapp-link{display:block;text-align:center;background:#fff0e9;color:var(--primary);font-weight:800;border-radius:16px;padding:14px}
.section{padding:84px 0}.stats-section{padding:36px 0;background:#fff}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.stat-card{border:1px solid var(--line);border-radius:22px;padding:26px;background:var(--white);box-shadow:0 12px 36px rgba(36,24,18,.06)}.stat-card strong{display:block;font:800 46px 'Montserrat';color:var(--primary)}.stat-card span{color:var(--muted);font-weight:700}.section-heading{text-align:center;max-width:760px;margin:0 auto 46px}.section-heading p{color:var(--muted);font-size:18px}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.step{background:var(--light);border:1px solid var(--line);border-radius:22px;padding:24px}.step span{display:inline-grid;place-items:center;width:46px;height:46px;border-radius:14px;background:var(--primary);color:#fff;font-weight:800;margin-bottom:20px}.step p{color:var(--muted);margin-bottom:0}
.commission-section{background:#1f1f1f;color:#fff}.commission-grid{display:grid;grid-template-columns:1fr .9fr;gap:42px;align-items:center}.commission-copy p{font-size:18px;color:#f4ded3}.highlight-box{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:20px;margin-top:24px}.calculator-card{background:#fff;color:var(--ink);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}.calculator-card label{display:block;font-weight:800;margin-bottom:16px}.calculator-card input[type=range]{width:100%;accent-color:var(--primary)}.calc-value{font:800 28px 'Montserrat';color:var(--primary);margin:12px 0 20px}.calc-result{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding:18px 0}.calc-result strong{font:800 24px 'Montserrat';color:var(--primary)}.calc-result.muted span{color:var(--muted)}
.rules-section{background:#fffaf7}.rules-grid,.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.rules-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:0 14px 40px rgba(36,24,18,.07)}.rules-card.warning{border-color:#f0dcc4}.check-list{padding-left:0;list-style:none}.check-list li{position:relative;padding-left:30px;margin:14px 0}.check-list li:before{content:"✓";position:absolute;left:0;color:var(--primary);font-weight:900}.check-list.cross li:before{content:"×";color:#b65b2b}
.form-section{background:linear-gradient(180deg,#fff 0%,#fff5ee 100%)}.form-copy p{font-size:18px;color:var(--muted)}.document-list{margin-top:24px;background:#fff;border-left:5px solid var(--accent);border-radius:18px;padding:22px;box-shadow:0 12px 36px rgba(36,24,18,.06)}.lead-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}label{display:block;font-weight:800;margin-bottom:16px}input,select,textarea{width:100%;margin-top:8px;border:1px solid var(--line);border-radius:14px;padding:14px 15px;font:500 15px 'Open Sans';outline:none;background:#fff}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(241,90,36,.12)}.lead-form .btn{width:100%;margin-top:6px}.form-status{font-weight:800;color:var(--primary);min-height:24px}.privacy-note{font-size:13px;color:var(--muted);text-align:center}.engineering-services-btn{display:block;margin-top:18px;background:linear-gradient(135deg,var(--primary),#ff6b00);color:#fff;font-weight:800;border-radius:14px;padding:14px 16px;text-align:center;box-shadow:0 12px 28px rgba(241,90,36,.24)}.engineering-services-btn:hover{background:linear-gradient(135deg,var(--primary-dark),var(--primary));transform:translateY(-2px)}.hidden-field{display:none}.hidden-field.active{display:block}
.faq-section{background:#fff}.faq-list{max-width:840px;margin:0 auto}details{border:1px solid var(--line);border-radius:18px;padding:20px 22px;margin:14px 0;background:#fff}summary{cursor:pointer;font-weight:900;font-family:'Montserrat'}details p{color:var(--muted)}.footer{background:#1b1b1b;color:#f9ede7;padding:34px 0}.footer-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:24px;align-items:center}.footer p{margin:8px 0 0;color:#f0cfc1}.footer-actions{text-align:right}.footer-actions .btn{margin-bottom:10px}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}.reveal.visible{opacity:1;transform:none}
@media (max-width:960px){.nav-links,.nav-cta{display:none}.menu-toggle{display:block}.nav.open .nav-links{display:flex;position:absolute;left:4vw;right:4vw;top:84px;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)}.hero-grid,.commission-grid,.rules-grid,.form-grid,.footer-grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}.stats-grid{grid-template-columns:1fr}.hero{padding:64px 0}.section{padding:64px 0}.footer-actions{text-align:left}.brand-logo{height:56px}}
@media (max-width:640px){.steps,.form-row{grid-template-columns:1fr}.hero-actions .btn{width:100%}h1{font-size:40px}.hero-card,.lead-form,.rules-card,.calculator-card{padding:24px}.nav{min-height:76px}.brand-logo{height:46px}}

/* Estilos para el overlay de carga */
#formLoadingOverlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  color: white;
  font-family: 'Open Sans', Arial, sans-serif;
  font-weight: 600;
}

.loading-spinner {
  width: 56px;
  height: 56px;
  border: 6px solid rgba(255, 255, 255, 0.3);
  border-top: 6px solid var(--primary, #f15a24);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 20px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}