:root{
  --pizarra:#5A5D64; --pizarra-dark:#3F454B; --verde:#1B6B43; --verde-d:#155234;
  --verde-claro:#8FD3AD; --fondo:#F1F0EB; --texto:#25282D; --muted:#5b5f66;
  --blanco:#ffffff; --linea:rgba(37,40,45,.12);
  --font-head:'Fraunces',Georgia,serif; --font-body:'Inter',system-ui,sans-serif;
  --maxw:1120px; --r:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);color:var(--texto);background:var(--blanco);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:500;line-height:1.15;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section.alt{background:var(--fondo)}
.section.dark{background:var(--pizarra);color:#f4f5f6}
.section.dark h2,.section.dark h1{color:#fff}
.eyebrow{font-family:var(--font-body);font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--verde);font-weight:500;margin-bottom:14px}
.section.dark .eyebrow{color:var(--verde-claro)}
.section-head{max-width:680px;margin-bottom:40px}
.section-head h2{font-size:clamp(28px,4vw,40px)}
.section-head p{color:var(--muted);margin-top:12px;font-size:18px}
.section.dark .section-head p{color:#d7d9dc}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-body);font-weight:500;font-size:16px;padding:13px 22px;border-radius:10px;border:1px solid transparent;cursor:pointer;transition:.18s;white-space:nowrap}
.btn-primary{background:var(--verde);color:#fff}
.btn-primary:hover{background:var(--verde-d)}
.btn-ghost{background:transparent;border-color:var(--linea);color:var(--texto)}
.btn-ghost:hover{background:rgba(37,40,45,.05)}
.btn-on-dark{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-on-dark:hover{background:rgba(255,255,255,.12)}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--linea)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-size:21px;font-weight:500}
.brand .mark{width:34px;height:34px;border-radius:9px;background:var(--verde);color:#fff;display:grid;place-items:center;font-size:15px}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500}
.nav-links a:hover{color:var(--texto)}
.nav-right{display:flex;align-items:center;gap:18px}
.lang{font-size:14px;color:var(--muted);border:1px solid var(--linea);padding:5px 10px;border-radius:8px}
.nav-toggle{display:none;background:none;border:0;font-size:26px;cursor:pointer;color:var(--texto)}

/* hero */
.hero{background:var(--pizarra);color:#f4f5f6;padding:96px 0 104px}
.hero .eyebrow{color:var(--verde-claro)}
.hero h1{font-size:clamp(34px,5.4vw,60px);color:#fff;max-width:16ch}
.hero .lead{font-size:clamp(17px,2vw,21px);color:#dfe1e4;max-width:54ch;margin-top:22px}
.hero-cta{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.trust-strip{display:flex;gap:28px;flex-wrap:wrap;margin-top:44px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18);color:#c7cace;font-size:14px;font-weight:500}
.trust-strip span{display:flex;align-items:center;gap:8px}
.trust-strip b{color:var(--verde-claro);font-weight:600}
.hero-grid{display:grid;grid-template-columns:1.25fr .85fr;gap:48px;align-items:center}
.hero-figure{margin:0}
.hero-figure img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:18px;border:1px solid rgba(255,255,255,.22)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:var(--blanco);border:1px solid var(--linea);border-radius:var(--r);padding:26px}
.card h3{font-size:21px;margin-bottom:10px}
.card p{color:var(--muted);font-size:16px}
.card .pre{font-family:var(--font-body);font-size:14px;color:var(--verde);font-weight:600;margin-top:14px}
.card.feat{border:2px solid var(--verde);position:relative}
.badge{position:absolute;top:-12px;left:24px;background:var(--verde);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:8px;font-family:var(--font-body)}
.step-n{font-family:var(--font-head);font-size:15px;color:var(--verde);font-weight:500;margin-bottom:6px}

/* pillars */
.pillars{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.pillar h3{font-size:20px;margin-bottom:10px;display:flex;gap:10px;align-items:baseline}
.pillar h3 .i{color:var(--verde-claro);font-size:15px;font-family:var(--font-body)}
.pillar p{color:#d7d9dc;font-size:16px}

/* metrics */
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:18px}
.metric{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:24px}
.metric .num{font-family:var(--font-head);font-size:38px;color:#fff;font-weight:500}
.metric .lab{color:#c7cace;font-size:14px;margin-top:6px}
.sectors{margin-top:28px;color:#c7cace;font-size:15px;letter-spacing:.04em}

/* estimator */
.estimator{background:var(--blanco);border:1px solid var(--linea);border-radius:var(--r);padding:26px;max-width:760px}
.est-label{font-size:14px;color:var(--muted);font-weight:500;margin:6px 0 10px}
.est-sizes{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.size-btn{padding:9px 14px;border:1px solid var(--linea);border-radius:10px;background:transparent;cursor:pointer;font:inherit;font-size:15px;color:var(--muted)}
.size-btn[aria-pressed="true"]{border:2px solid var(--verde);color:var(--verde-d);background:rgba(27,107,67,.07);font-weight:500}
.grp{font-size:13px;color:var(--muted);margin:20px 0 8px;text-transform:uppercase;letter-spacing:.08em}
.svc{display:flex;align-items:center;gap:12px;padding:13px 14px;border:1px solid var(--linea);border-radius:11px;cursor:pointer;margin-bottom:8px;background:var(--blanco)}
.svc .check{width:20px;height:20px;border-radius:6px;border:1px solid var(--linea);display:grid;place-items:center;color:transparent;flex:0 0 auto;font-size:13px}
.svc[aria-pressed="true"]{border-color:var(--verde)}
.svc[aria-pressed="true"] .check{background:var(--verde);border-color:var(--verde);color:#fff}
.svc.feat{border:2px solid var(--verde)}
.svc.disabled{opacity:.45;cursor:not-allowed}
.svc-name{flex:1;font-size:15px}
.svc-name small{color:var(--muted)}
.svc-price{font-size:14px;color:var(--muted);white-space:nowrap}
.est-totals{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.est-totals .box{background:var(--fondo);border-radius:11px;padding:16px}
.est-totals .box .l{font-size:13px;color:var(--muted)}
.est-totals .box .v{font-family:var(--font-head);font-size:23px;font-weight:500;margin-top:4px}
.est-note{font-size:13px;color:var(--muted);margin-top:12px}

/* faq */
.faq-item{border-bottom:1px solid var(--linea)}
.faq-item summary{cursor:pointer;list-style:none;padding:20px 0;font-family:var(--font-head);font-size:19px;display:flex;justify-content:space-between;gap:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--verde);font-size:24px;line-height:1}
.faq-item[open] summary::after{content:"–"}
.faq-item p{padding:0 0 22px;color:var(--muted);max-width:75ch}

/* form */
.contact-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:start}
.form{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--r);padding:26px}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{margin-bottom:14px}
.field label{display:block;font-size:14px;color:#d7d9dc;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:15px;padding:11px 12px;border-radius:9px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.05);color:#fff}
.field textarea{min-height:90px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9aa0a6}
.alt-contact{color:#d7d9dc}
.alt-contact h3{color:#fff;font-size:20px;margin-bottom:12px}
.alt-contact a{color:var(--verde-claro);font-weight:500}
.alt-contact .line{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;gap:12px}

/* footer */
.site-footer{background:var(--pizarra-dark);color:#c7cace;padding:54px 0 36px;font-size:14px}
.footer-top{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;margin-bottom:30px}
.footer-top .brand{color:#fff}
.footer-links{display:flex;gap:22px;flex-wrap:wrap}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;color:#9aa0a6}

.lead-sub{color:var(--muted);font-size:17px;max-width:60ch}
.mt{margin-top:26px}

@media(max-width:820px){
  .nav-links,.nav-right .lang{display:none}
  .nav-toggle{display:block}
  .nav-links.open{display:flex;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:18px 24px;border-bottom:1px solid var(--linea);gap:16px}
  .contact-grid{grid-template-columns:1fr}
  .form .row{grid-template-columns:1fr}
  .section{padding:60px 0}
  .hero-grid{grid-template-columns:1fr}
  .hero-figure{max-width:300px;margin-top:30px}
}