:root{
  --fondo:#f6f8f6;
  --superficie:#ffffff;
  --texto:#14201b;
  --suave:#55635c;
  --linea:#dfe6e1;
  --verde:#13b866;
  --verde-osc:#0a8a4a;
  --verde-claro:#e3f7ec;
  --noche:#0c1512;
  --noche-2:#13201b;
  --noche-texto:#e8efeb;
  --noche-suave:#9fb1a8;
  --rojo:#ef4444;
  --ambar:#f5a524;
  --radio:18px;
  --sombra:0 1px 2px rgba(12,21,18,.06),0 8px 30px rgba(12,21,18,.06);
  --ancho:1160px;
  --titulos:"Space Grotesk",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font:400 17px/1.65 Inter,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--texto);background:var(--fondo);-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:var(--verde-osc)}
h1,h2,h3{font-family:var(--titulos);line-height:1.15;letter-spacing:-.02em;margin:0 0 .5em}
p{margin:0 0 1em}
.contenedor{width:100%;max-width:var(--ancho);margin:0 auto;padding:0 20px}
.verde{color:var(--verde)}
.etiqueta{display:inline-block;font:600 13px/1 Inter,sans-serif;letter-spacing:.08em;text-transform:uppercase;color:var(--verde-osc);margin-bottom:18px}

/* Botones */
.boton{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:999px;font:600 16px/1 Inter,sans-serif;text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:transform .15s,background .15s,border-color .15s,box-shadow .15s}
.boton:hover{transform:translateY(-1px)}
.boton-primario{background:var(--verde);color:#04130b;box-shadow:0 6px 20px rgba(19,184,102,.35)}
.boton-primario:hover{background:#19c972}
.boton-secundario{color:var(--noche-texto);border-color:rgba(232,239,235,.25)}
.boton-secundario:hover{border-color:var(--verde)}

/* Cabecera y héroe */
.cabecera{background:radial-gradient(1000px 500px at 85% 30%,rgba(19,184,102,.18),transparent 60%),var(--noche);color:var(--noche-texto);position:relative;overflow:hidden}
.cabecera.fija{padding-top:76px}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px;position:sticky;top:0;z-index:20}
.cabecera.fija .nav{position:fixed;left:0;right:0;max-width:none;background:rgba(12,21,18,.88);backdrop-filter:blur(12px);padding-left:max(20px,calc((100% - var(--ancho))/2 + 20px));padding-right:max(20px,calc((100% - var(--ancho))/2 + 20px));border-bottom:1px solid rgba(255,255,255,.06)}
.marca{display:inline-flex;align-items:center;gap:10px;color:inherit;text-decoration:none;font:600 21px/1 var(--titulos);letter-spacing:-.02em}
.marca b{color:var(--verde);font-weight:700}
.marca-luces{display:inline-flex;flex-direction:column;gap:3px;padding:4px 5px;background:#000;border-radius:7px}
.marca-luces i{width:7px;height:7px;border-radius:50%;background:#333}
.marca-luces i:last-child{background:var(--verde);box-shadow:0 0 8px var(--verde)}
.menu{list-style:none;display:flex;align-items:center;gap:30px;margin:0;padding:0}
.menu a{color:var(--noche-texto);text-decoration:none;font-weight:500;font-size:15px;opacity:.85}
.menu a:hover{opacity:1;color:var(--verde)}
.menu .menu-cta{opacity:1;padding:10px 18px;border-radius:999px;border:1.5px solid var(--verde);color:var(--verde)}
.menu .menu-cta:hover{background:var(--verde);color:#04130b}
.nav-boton{display:none;background:none;border:0;width:44px;height:44px;padding:12px;cursor:pointer}
.nav-boton span{display:block;height:2px;background:var(--noche-texto);margin:5px 0;transition:transform .2s}
.nav-boton[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.nav-boton[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

.hero{display:grid;grid-template-columns:1.4fr .6fr;gap:40px;align-items:center;padding-top:70px;padding-bottom:110px}
.hero h1{font-size:clamp(36px,5.4vw,64px);font-weight:700;max-width:14em}
.hero h1 .verde{display:block}
.hero-sub{font-size:19px;color:var(--noche-suave);max-width:36em;margin-bottom:34px}
.hero-acciones{display:flex;flex-wrap:wrap;gap:14px}

.semaforo{justify-self:center;display:flex;flex-direction:column;align-items:center}
.semaforo-caja{display:flex;flex-direction:column;gap:18px;padding:22px;background:linear-gradient(#1b2622,#0f1714);border-radius:40px;box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 30px 60px rgba(0,0,0,.45)}
.luz{width:78px;height:78px;border-radius:50%;background:#222c28;box-shadow:inset 0 4px 10px rgba(0,0,0,.6)}
.luz-roja{animation:roja 6s infinite}
.luz-ambar{animation:ambar 6s infinite}
.luz-verde{animation:verde 6s infinite}
.semaforo-poste{width:16px;height:120px;background:linear-gradient(90deg,#1b2622,#26332e,#1b2622)}
@keyframes roja{0%,22%{background:var(--rojo);box-shadow:0 0 40px var(--rojo),inset 0 -4px 10px rgba(0,0,0,.25)}28%,100%{background:#2a2222}}
@keyframes ambar{0%,22%{background:#2c2a20}28%,44%{background:var(--ambar);box-shadow:0 0 40px var(--ambar),inset 0 -4px 10px rgba(0,0,0,.25)}50%,100%{background:#2c2a20}}
@keyframes verde{0%,44%{background:#1f2c25}50%,100%{background:var(--verde);box-shadow:0 0 50px var(--verde),inset 0 -4px 10px rgba(0,0,0,.2)}}

/* Franja de tres tarjetas */
.franja{margin-top:-60px;position:relative;z-index:2}
.franja-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tarjeta-servicio{background:var(--superficie);border:1px solid var(--linea);border-radius:var(--radio);padding:28px;text-decoration:none;color:var(--texto);box-shadow:var(--sombra);transition:transform .2s,border-color .2s}
.tarjeta-servicio:hover{transform:translateY(-4px);border-color:var(--verde)}
.tarjeta-servicio .num{font:600 14px/1 var(--titulos);color:var(--verde-osc)}
.tarjeta-servicio h2{font-size:22px;margin:14px 0 8px}
.tarjeta-servicio p{color:var(--suave);font-size:15.5px;margin:0}

/* Secciones */
.seccion{padding:110px 0}
.seccion-cabecera{max-width:760px;margin-bottom:54px}
.seccion-cabecera h2{font-size:clamp(30px,3.8vw,46px)}
.entrada{font-size:19px;color:var(--suave)}
.bloques{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.bloque{background:var(--superficie);border:1px solid var(--linea);border-radius:var(--radio);padding:32px}
.bloque h3{font-size:21px}
.bloque p{color:var(--suave);font-size:16px}
.icono{width:48px;height:48px;border-radius:14px;background:var(--verde-claro);display:grid;place-items:center;margin-bottom:22px}
.icono svg{width:24px;height:24px;fill:none;stroke:var(--verde-osc);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.lista{list-style:none;padding:0;margin:0 0 1em}
.lista li{position:relative;padding-left:26px;margin-bottom:9px;font-size:15.5px}
.lista li::before{content:"";position:absolute;left:0;top:.5em;width:10px;height:10px;border-radius:50%;background:var(--verde);box-shadow:0 0 0 4px var(--verde-claro)}

/* Sección oscura */
.seccion-oscura{background:var(--noche);color:var(--noche-texto)}
.seccion-oscura .entrada{color:var(--noche-suave)}
.seccion-oscura .etiqueta{color:var(--verde)}
.cifras{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:22px}
.cifra{display:flex;align-items:center;gap:24px;padding:28px 32px;border-radius:var(--radio);background:var(--noche-2);border:1px solid rgba(255,255,255,.06)}
.cifra strong{font:700 clamp(44px,5vw,60px)/1 var(--titulos);color:var(--verde);letter-spacing:-.03em}
.cifra span{color:var(--noche-suave);font-size:16px}
.dos-columnas{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.panel{padding:36px;border-radius:var(--radio);background:var(--noche-2);border:1px solid rgba(255,255,255,.06)}
.panel h3{font-size:24px}
.panel p{color:var(--noche-suave)}
.panel .lista li{color:var(--noche-texto)}
.panel .lista li::before{box-shadow:0 0 0 4px rgba(19,184,102,.18)}
.panel-tag{display:inline-block;padding:6px 12px;border-radius:999px;background:rgba(19,184,102,.14);color:var(--verde)!important;font-size:13px;font-weight:600;margin-bottom:18px}
.nota{border-left:3px solid var(--verde);padding-left:14px;margin:18px 0 0;color:var(--noche-texto)!important;font-weight:500}

/* Desarrollo */
.desarrollo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--linea)}
.pilar{padding:34px 30px 0 0}
.pilar+.pilar{padding-left:30px;border-left:1px solid var(--linea)}
.pilar h3{font-size:21px}
.pilar h3::before{content:"";display:block;width:34px;height:4px;border-radius:4px;background:var(--verde);margin-bottom:20px}
.pilar p{color:var(--suave)}

/* Contacto */
.seccion-contacto{background:linear-gradient(180deg,var(--fondo),var(--verde-claro))}
.contacto{display:grid;grid-template-columns:1fr 1.1fr;gap:60px;align-items:start}
.contacto-info h2{font-size:clamp(30px,3.8vw,46px)}
.contacto-info>p{color:var(--suave);font-size:18px}
.datos{margin:34px 0 0;display:grid;gap:20px}
.datos dt{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--suave)}
.datos dd{margin:4px 0 0;font-size:18px;font-weight:500}
.datos a{color:var(--texto);text-decoration:none;border-bottom:2px solid var(--verde)}
.formulario{background:var(--superficie);border:1px solid var(--linea);border-radius:22px;padding:34px;box-shadow:var(--sombra)}
.campo{margin-bottom:18px}
.campo label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.campo input,.campo textarea{width:100%;font:inherit;font-size:16px;color:var(--texto);background:var(--fondo);border:1.5px solid var(--linea);border-radius:12px;padding:12px 14px;transition:border-color .15s,box-shadow .15s}
.campo input:focus,.campo textarea:focus{outline:0;border-color:var(--verde);box-shadow:0 0 0 4px rgba(19,184,102,.15);background:#fff}
.campo textarea{resize:vertical;min-height:130px}
.campo-trampa{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--suave);margin:4px 0 22px}
.check input{margin-top:4px;accent-color:var(--verde);width:17px;height:17px;flex:none}
.formulario .boton{width:100%}
.formulario .boton[disabled]{opacity:.6;cursor:wait}
.form-estado{margin:14px 0 0;font-size:15px;font-weight:500;min-height:1.5em}
.form-estado.ok{color:var(--verde-osc)}
.form-estado.error{color:#c62828}

/* Pie */
.pie{background:var(--noche);color:var(--noche-suave);padding:60px 0 30px;font-size:15px}
.pie .marca{color:var(--noche-texto);margin-bottom:16px}
.pie-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:40px}
.pie-grid p{max-width:30em}
.pie-datos{text-align:right}
.pie-datos strong{color:var(--noche-texto)}
.pie a{color:var(--noche-texto)}
.pie-legal{margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);font-size:14px}

/* Aparición al hacer scroll */
.revelar{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.revelar.visible{opacity:1;transform:none}

@media (max-width:960px){
  .hero{grid-template-columns:1fr;padding-top:40px}
  .semaforo{display:none}
  .franja-grid,.bloques,.desarrollo-grid{grid-template-columns:1fr}
  .pilar,.pilar+.pilar{padding:28px 0 0;border-left:0}
  .dos-columnas,.cifras,.contacto,.pie-grid{grid-template-columns:1fr}
  .contacto{gap:40px}
  .pie-datos{text-align:left}
  .seccion{padding:80px 0}
}
@media (max-width:820px){
  .nav-boton{display:block}
  .menu{position:fixed;inset:76px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;background:var(--noche);padding:10px 20px 24px;border-bottom:1px solid rgba(255,255,255,.08);transform:translateY(-12px);opacity:0;visibility:hidden;transition:.2s}
  .menu.abierto{transform:none;opacity:1;visibility:visible}
  .menu li a{display:block;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.06)}
  .menu .menu-cta{margin-top:14px;text-align:center;border-bottom:1.5px solid var(--verde)}
}
@media (max-width:520px){
  body{font-size:16px}
  .contenedor{padding:0 16px}
  .cifra{flex-direction:column;align-items:flex-start;gap:10px}
  .formulario,.panel,.bloque{padding:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .revelar{opacity:1;transform:none}
  .luz-verde{background:var(--verde);box-shadow:0 0 50px var(--verde)}
}