/* ============================================================
   Aerotermias del Norte — Hoja de estilos principal
   Marca: teal #0F2B36 · lima #B8FF66
   Tipografías: General Sans (títulos) · Satoshi (texto)
   ============================================================ */

:root{
  --dark:#0F2B36;
  --dark-2:#123744;
  --lime:#B8FF66;
  --lime-2:#a9ef58;
  --ink:#111111;
  --muted:#8b968f;
  --body:#4a544e;
  --soft:#F8F8F7;
  --line:#e7ebe7;
  --line-2:#eef0ee;
  --maxw:1320px;
  --radius:24px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Satoshi',system-ui,-apple-system,sans-serif;
  color:var(--ink);
  background:#fff;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  line-height:1.5;
}
::selection{background:var(--lime);color:var(--dark)}
::-webkit-scrollbar{width:11px}
::-webkit-scrollbar-thumb{background:#c9d2ce;border-radius:8px;border:3px solid #fff}
h1,h2,h3,h4{font-family:'General Sans','Satoshi',sans-serif;letter-spacing:-.02em;line-height:1.05}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}

/* Utilidades */
.container{max-width:var(--maxw);margin:0 auto;padding:0 32px}
.eyebrow{font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:20px}
.eyebrow.lime{color:var(--lime)}
.section{max-width:var(--maxw);margin:0 auto;padding:100px 32px}
.section-head{max-width:660px;margin-bottom:52px}
.section-head h2{font-size:clamp(30px,4.2vw,56px);font-weight:600;color:var(--ink)}
.lead{font-size:17px;line-height:1.65;color:var(--body)}
.lime-text{color:var(--lime)}

/* Botones */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:16px;padding:16px 28px;border-radius:14px;transition:transform .2s,box-shadow .2s,background .2s;cursor:pointer;border:none}
.btn-lime{background:var(--lime);color:var(--dark);box-shadow:0 8px 28px rgba(184,255,102,.4)}
.btn-lime:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(184,255,102,.55)}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{transform:translateY(-2px)}
.btn-glass{background:rgba(255,255,255,.1);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.22);color:#fff}
.btn-glass:hover{background:rgba(255,255,255,.2)}
.btn-ghost-dark{background:rgba(15,43,54,.08);color:var(--dark)}
.btn-ghost-dark:hover{background:rgba(15,43,54,.16)}

/* ================= HEADER ================= */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .35s,box-shadow .35s,backdrop-filter .35s;background:transparent}
.site-header.solid{background:rgba(255,255,255,.9);backdrop-filter:blur(20px);box-shadow:0 1px 0 rgba(15,43,54,.08)}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:0 32px;height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;flex:none;position:relative;height:48px}
.brand img{height:48px;width:auto;display:block;transition:opacity .35s}
.brand .logo-black{position:absolute;top:0;left:0;opacity:0}
.site-header.solid .brand .logo-light{opacity:0}
.site-header.solid .brand .logo-black{opacity:1}

.main-nav{display:flex;align-items:center;gap:2px}
.main-nav>.nav-item{position:relative}
.nav-link{display:inline-flex;align-items:center;gap:4px;font-size:14.5px;font-weight:500;color:#fff;padding:9px 12px;border-radius:10px;transition:color .35s,background .2s;cursor:pointer}
.site-header.solid .nav-link{color:var(--ink)}
.nav-item.current .nav-link{font-weight:600}
.nav-item:hover .nav-link{background:rgba(127,140,135,.12)}
.nav-link .caret{font-size:11px;opacity:.55;transition:transform .2s}
.nav-item:hover .nav-link .caret{transform:rotate(180deg)}

.header-cta{flex:none;background:var(--lime);color:var(--dark);font-weight:600;font-size:14.5px;padding:11px 20px;border-radius:12px;box-shadow:0 4px 16px rgba(184,255,102,.4);transition:transform .2s,box-shadow .2s}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(184,255,102,.55)}

/* Mega menú */
.mega{position:absolute;left:0;right:0;top:74px;overflow:hidden;background:#fff;border-top:1px solid rgba(15,43,54,.07);box-shadow:0 24px 40px -20px rgba(15,43,54,.22);max-height:0;opacity:0;transition:max-height .32s cubic-bezier(.4,0,.2,1),opacity .25s;pointer-events:none}
.nav-item:hover .mega{max-height:420px;opacity:1;pointer-events:auto}
.mega-inner{max-width:var(--maxw);margin:0 auto;padding:26px 32px 30px}
.mega-title{display:flex;align-items:baseline;gap:12px;margin-bottom:18px}
.mega-title span{font-family:'General Sans';font-weight:600;font-size:15px;color:var(--dark)}
.mega-title a{font-size:13px;font-weight:600;color:var(--dark);opacity:.55}
.mega-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px 24px}
.mega-grid a{display:block;font-size:14.5px;font-weight:500;color:#3a443e;padding:9px 12px;border-radius:10px;transition:background .18s,color .18s}
.mega-grid a:hover{background:#F1F5F0;color:var(--dark)}

/* Botón hamburguesa (móvil) */
.nav-toggle{display:none;flex:none;background:none;border:none;cursor:pointer;width:44px;height:44px;border-radius:10px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:22px;height:2px;background:#fff;position:relative;transition:background .3s}
.site-header.solid .nav-toggle span{background:var(--ink)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:22px;height:2px;background:inherit;transition:transform .3s}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}

/* ================= HERO home ================= */
.hero{position:relative;min-height:100vh;display:flex;align-items:flex-end;overflow:hidden;background:var(--dark)}
.hero-bg{position:absolute;inset:0;background:repeating-linear-gradient(125deg,#123744 0 26px,#0f2f3b 26px 52px)}
.hero-ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none}
.hero-ph span{font:500 13px/1 ui-monospace,monospace;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.28)}
.hero-grad{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,43,54,.55) 0%,rgba(15,43,54,.1) 30%,rgba(15,43,54,.35) 70%,rgba(15,43,54,.9) 100%)}
.hero-inner{position:relative;width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px 64px;display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap}
.hero-copy{max-width:720px}
.badge{display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:100px;background:rgba(255,255,255,.1);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.16);margin-bottom:26px}
.badge.lime{background:rgba(184,255,102,.14);border-color:rgba(184,255,102,.3)}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--lime)}
.badge span{color:#fff;font-size:13px;font-weight:500;letter-spacing:.01em}
.badge.lime span{color:var(--lime);font-weight:600}
.hero h1{color:#fff;font-size:clamp(44px,6.4vw,92px);font-weight:600;margin-bottom:24px}
.hero-copy p{color:rgba(255,255,255,.82);font-size:19px;line-height:1.5;max-width:520px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-cards{display:flex;flex-direction:column;gap:16px;padding-bottom:6px}
.stat-card{background:var(--lime);border-radius:22px;padding:22px 24px;min-width:230px;box-shadow:0 20px 50px rgba(0,0,0,.28)}
.stat-card .big{font-family:'General Sans';font-weight:600;font-size:44px;color:var(--dark);line-height:1}
.stat-card .lbl{font-size:14px;font-weight:600;color:var(--dark);margin-top:2px}
.stat-card .sub{font-size:12.5px;color:rgba(15,43,54,.7);margin-top:2px}
.info-card{background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-radius:22px;padding:20px 22px;min-width:230px;box-shadow:0 20px 50px rgba(0,0,0,.28);display:flex;align-items:center;gap:14px}
.info-card .ico{width:42px;height:42px;border-radius:12px;background:var(--dark);display:inline-flex;align-items:center;justify-content:center;flex:none}
.info-card .t{font-weight:600;font-size:15px;color:var(--dark)}
.info-card .s{font-size:12.5px;color:rgba(15,43,54,.62)}

/* ================= HERO interior ================= */
.page-hero{position:relative;background:var(--dark);padding:150px 32px 88px;overflow:hidden}
.page-hero.compact{padding:132px 32px 70px}
.page-hero-bg{position:absolute;inset:0;background:repeating-linear-gradient(125deg,#123744 0 26px,#0f2f3b 26px 52px);opacity:.6}
.page-hero-inner{position:relative;max-width:var(--maxw);margin:0 auto}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:9px;font-size:13.5px;color:rgba(255,255,255,.55);margin-bottom:28px}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb .cur{color:var(--lime)}
.page-hero h1{color:#fff;font-size:clamp(38px,5.2vw,74px);font-weight:600;margin-bottom:22px}
.page-hero p.sub{color:rgba(255,255,255,.82);font-size:18px;line-height:1.55;max-width:600px}
.hero-split{display:grid;grid-template-columns:1.5fr 1fr;gap:48px;align-items:end}

/* ================= Clientes / logos ================= */
.clients{padding:52px 32px;border-bottom:1px solid var(--line-2)}
.clients p{text-align:center;font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:30px}
.clients-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:34px;opacity:.55}
.clients-row span{font-family:'General Sans';font-weight:600;font-size:22px;letter-spacing:-.01em;color:var(--dark)}

/* ================= Secciones oscuras ================= */
.dark-section{background:var(--dark);padding:100px 32px}
.dark-section.rounded{border-radius:44px 44px 0 0}
.dark-section h2{color:#fff}
.dark-section .lead{color:rgba(255,255,255,.68)}

/* Placeholders de foto */
.ph{background:repeating-linear-gradient(135deg,#e8ece9 0 14px,#eef1ee 14px 28px);display:flex;align-items:center;justify-content:center;border-radius:var(--radius);overflow:hidden}
.ph span{font:500 12px/1 ui-monospace,monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--dark);opacity:.5;text-align:center;padding:0 12px}
.ph-dark{background:repeating-linear-gradient(125deg,#12414f 0 20px,#0f3948 20px 40px)}
.ph-dark span{color:rgba(255,255,255,.5)}
.ph-lime{background:repeating-linear-gradient(135deg,#a9ef58 0 16px,#b8ff66 16px 32px)}
.ph-lime span{color:var(--dark)}

/* ================= Grids de tarjetas ================= */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}

/* Beneficios (celdas con línea) */
.cells{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--line-2);border:1px solid var(--line-2);border-radius:var(--radius);overflow:hidden}
.cell{background:#fff;padding:38px 34px;transition:background .3s}
.cell:hover{background:var(--soft)}
.cell .cell-ico{width:52px;height:52px;border-radius:14px;background:#F0F4F1;display:inline-flex;align-items:center;justify-content:center;margin-bottom:22px;color:var(--dark)}
.cell h3{font-size:19px;font-weight:600;color:var(--ink);margin-bottom:9px}
.cell p{font-size:14.5px;line-height:1.55;color:#6a746e}
.cell .num{font-family:'General Sans';font-weight:600;font-size:14px;color:var(--dark);background:#EAF7DA;padding:5px 11px;border-radius:8px;display:inline-block;margin-bottom:20px}

/* Tarjeta imagen + texto */
.media-card{border:1px solid var(--line);border-radius:22px;overflow:hidden;background:#fff}
.media-card .ph{border-radius:0;height:190px}
.media-card .mc-body{padding:26px 26px 30px}
.media-card h3{font-size:20px;font-weight:600;color:var(--ink);margin-bottom:9px}
.media-card p{font-size:14.5px;line-height:1.55;color:#6a746e}

/* Servicios (filas alternas) */
.serv-list{display:flex;flex-direction:column;gap:20px}
.serv-row{display:flex;flex-wrap:wrap;border-radius:28px;overflow:hidden;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.09)}
.serv-row .serv-media{flex:0 0 46%;min-height:300px;display:flex;align-items:center;justify-content:center;background:repeating-linear-gradient(135deg,#12414f 0 16px,#0f3948 16px 32px);color:#dfeef4}
.serv-row .serv-media span{font:500 11.5px/1 ui-monospace,monospace;letter-spacing:.08em;text-transform:uppercase;opacity:.55}
.serv-row .serv-body{padding:38px 40px;display:flex;flex-direction:column;justify-content:center;flex:1}
.serv-row .serv-num{font-family:'General Sans';font-weight:600;font-size:14px;color:var(--lime);margin-bottom:16px}
.serv-row h3{font-size:27px;font-weight:600;color:#fff;margin-bottom:12px}
.serv-row .serv-body p{font-size:15.5px;line-height:1.55;color:rgba(255,255,255,.62);max-width:400px;margin-bottom:22px}
.serv-row .link{font-weight:600;font-size:14.5px;color:var(--lime);align-self:flex-start;border-bottom:1px solid rgba(184,255,102,.4);padding-bottom:3px}
.serv-row.reverse .serv-media{order:2}
.serv-row.featured{background:var(--lime);border:none}
.serv-row.featured .serv-media{background:repeating-linear-gradient(135deg,#a9ef58 0 16px,#b8ff66 16px 32px);color:var(--dark)}
.serv-row.featured .serv-num{color:rgba(15,43,54,.55)}
.serv-row.featured h3{color:var(--dark)}
.serv-row.featured .serv-body p{color:rgba(15,43,54,.72)}
.serv-row.featured .link{color:var(--dark);border-color:rgba(15,43,54,.35)}

/* Ventajas / inconvenientes */
.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.panel{border-radius:var(--radius);padding:40px}
.panel.pros{background:#F1F8E7;border:1px solid #dcedc4}
.panel.cons{background:var(--soft);border:1px solid var(--line)}
.panel h3{font-size:22px;font-weight:600;color:var(--dark);margin-bottom:24px}
.checklist{display:flex;flex-direction:column;gap:16px}
.checklist li{display:flex;gap:13px;align-items:flex-start;list-style:none}
.checklist .mk{width:24px;height:24px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;flex:none;margin-top:1px}
.checklist .mk.yes{background:var(--lime)}
.checklist .mk.no{background:#e4e8e3}
.checklist span{font-size:16px;line-height:1.5;color:#2f3a33}

/* Stats sobre foto */
.stats-band{position:relative;border-radius:32px;overflow:hidden;min-height:460px;display:flex;align-items:flex-end;background:repeating-linear-gradient(125deg,#123744 0 24px,#0f2f3b 24px 48px)}
.stats-band .ovl{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,43,54,.15),rgba(15,43,54,.75))}
.stats-band .inner{position:relative;width:100%;padding:40px;display:flex;flex-wrap:wrap;gap:16px}
.glass-stat{flex:1;min-width:180px;background:rgba(255,255,255,.1);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:26px 24px}
.glass-stat .v{font-family:'General Sans';font-weight:600;font-size:42px;color:var(--lime);line-height:1}
.glass-stat .l{font-size:14.5px;color:#fff;margin-top:8px;font-weight:500}

/* Pasos (4 col) */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.09);border-radius:22px;padding:30px 26px}
.step .num{font-family:'General Sans';font-weight:600;font-size:15px;color:var(--lime);margin-bottom:18px}
.step h3{font-size:20px;font-weight:600;color:#fff;margin-bottom:10px}
.step p{font-size:14.5px;line-height:1.55;color:rgba(255,255,255,.62)}

/* Acordeón */
.accordion{display:flex;flex-direction:column;gap:12px}
.acc-item{border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden;transition:background .3s,border-color .3s}
.acc-item.open{border-color:rgba(15,43,54,.16);background:var(--soft)}
.acc-btn{width:100%;background:none;border:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:24px 26px;text-align:left}
.acc-btn .q{font-family:'General Sans';font-weight:600;font-size:18.5px;color:var(--ink)}
.acc-btn .ic{font-family:'General Sans';font-size:26px;font-weight:400;color:var(--dark);transition:transform .3s;line-height:1}
.acc-item.open .acc-btn .ic{transform:rotate(45deg)}
.acc-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s ease}
.acc-item.open .acc-panel{grid-template-rows:1fr}
.acc-panel>div{overflow:hidden}
.acc-panel p{padding:0 26px 24px;font-size:15.5px;line-height:1.62;color:#5a645e;margin:0}

/* Cluster links */
.cluster{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cluster a{display:flex;align-items:center;justify-content:space-between;gap:14px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 24px;transition:transform .25s,box-shadow .25s,border-color .25s}
.cluster a:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(15,43,54,.08);border-color:#dbe6cf}
.cluster a .lbl{font-family:'General Sans';font-weight:600;font-size:17px;color:var(--dark)}
.cluster a .arw{color:var(--lime);font-size:18px;font-weight:700}

/* Proyectos + filtros */
.filters{display:flex;gap:8px;flex-wrap:wrap}
.filter{cursor:pointer;border:1px solid #dbe1dc;background:#fff;color:var(--body);font-weight:500;font-size:14px;padding:10px 18px;border-radius:100px;transition:all .2s}
.filter.active{border-color:var(--dark);background:var(--dark);color:#fff}
.proj-card{border-radius:22px;overflow:hidden;background:#fff;box-shadow:0 2px 14px rgba(15,43,54,.05);transition:transform .3s,box-shadow .3s;display:block}
.proj-card:hover{transform:translateY(-5px);box-shadow:0 20px 44px rgba(15,43,54,.12)}
.proj-card .ph{border-radius:0;height:230px}
.proj-card .pc-body{padding:22px 24px}
.proj-card .tag{display:inline-block;font-size:11.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--dark);background:#EAF7DA;padding:4px 10px;border-radius:8px;margin-bottom:12px}
.proj-card h3{font-size:20px;font-weight:600;color:var(--ink);margin-bottom:6px}
.proj-card p{font-size:14px;color:#6a746e}

/* Testimonios */
.testi{max-width:1080px;margin:0 auto;padding:110px 32px;text-align:center}
.testi blockquote{font-family:'General Sans';font-weight:500;font-size:clamp(24px,3.2vw,38px);line-height:1.3;color:var(--ink);letter-spacing:-.02em;margin-bottom:34px;min-height:150px;transition:opacity .4s}
.testi .who{display:flex;align-items:center;justify-content:center;gap:14px;margin-bottom:30px}
.testi .who .av{width:48px;height:48px;border-radius:50%;background:repeating-linear-gradient(135deg,#dfe6e0 0 8px,#eef2ee 8px 16px);flex:none}
.testi .who .txt{text-align:left}
.testi .who .n{font-weight:600;font-size:15.5px;color:var(--ink)}
.testi .who .r{font-size:13.5px;color:var(--muted)}
.testi-nav{display:flex;align-items:center;justify-content:center;gap:14px}
.testi-nav button{width:44px;height:44px;border-radius:50%;border:1px solid #dbe1dc;background:#fff;cursor:pointer;font-size:18px;color:var(--dark);transition:background .2s}
.testi-nav button:hover{background:var(--soft)}

/* Blog */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post{display:block;border-radius:22px;overflow:hidden;transition:transform .3s}
.post:hover{transform:translateY(-5px)}
.post .ph{height:220px;border-radius:22px;margin-bottom:18px}
.post .meta{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.post h3{font-size:21px;font-weight:600;color:var(--ink);margin-top:10px;line-height:1.25}

/* CTA final */
.cta{padding:20px 32px 90px}
.cta-inner{max-width:var(--maxw);margin:0 auto;background:var(--lime);border-radius:36px;padding:clamp(48px,7vw,96px);position:relative;overflow:hidden}
.cta-inner .blob{position:absolute;top:-80px;right:-60px;width:340px;height:340px;border-radius:50%;background:rgba(15,43,54,.06)}
.cta-inner .c{position:relative;max-width:680px}
.cta-inner h2{font-size:clamp(34px,5vw,66px);font-weight:600;color:var(--dark);margin-bottom:22px}
.cta-inner p{font-size:18px;line-height:1.55;color:rgba(15,43,54,.78);margin-bottom:36px;max-width:520px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* Bloque de contenido prosa */
.prose p{font-size:17px;line-height:1.65;color:var(--body);margin-bottom:18px}
.prose p:last-child{margin-bottom:0}
.prose strong{color:#2f3a33}

/* Tabla comparativa */
.cmp-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
.cmp{width:100%;border-collapse:collapse;min-width:560px;background:#fff}
.cmp th,.cmp td{padding:18px 22px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
.cmp thead th{font-family:'General Sans';font-weight:600;color:var(--dark);background:var(--soft);font-size:14px}
.cmp tbody tr:last-child td{border-bottom:none}
.cmp td.win{color:var(--dark);font-weight:600}
.cmp td .yes{color:#4a9d2f;font-weight:700}
.cmp td .no{color:#b23b3b;font-weight:700}

/* ================= FOOTER ================= */
.site-footer{background:var(--dark);color:#fff;padding:80px 32px 40px}
.footer-inner{max-width:var(--maxw);margin:0 auto}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-cols .brand-col img{height:52px;width:auto;margin-bottom:20px}
.footer-cols .brand-col p{font-size:15px;line-height:1.6;color:rgba(255,255,255,.6);max-width:300px}
.footer-cols h4{font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.45);margin-bottom:18px}
.footer-cols .links{display:flex;flex-direction:column;gap:11px}
.footer-cols .links a,.footer-cols .contact a{font-size:15px;color:rgba(255,255,255,.78);transition:color .2s}
.footer-cols .links a:hover,.footer-cols .contact a:hover{color:var(--lime)}
.footer-cols .contact{display:flex;flex-direction:column;gap:11px;font-size:15px;color:rgba(255,255,255,.78)}
.footer-cols .contact span{color:rgba(255,255,255,.78)}
.footer-cols .contact .hrs{color:rgba(255,255,255,.5)}
.footer-bottom{padding-top:28px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.footer-bottom .cr{font-size:13.5px;color:rgba(255,255,255,.45)}
.social{display:flex;gap:10px}
.social a{width:40px;height:40px;border-radius:11px;background:rgba(255,255,255,.08);display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;color:rgba(255,255,255,.75);transition:background .2s,color .2s}
.social a:hover{background:var(--lime);color:var(--dark)}

/* ================= Reveal on scroll (progressive enhancement) =================
   Sin JS, el contenido es totalmente visible. Solo se oculta para animar
   cuando la clase .js está presente (la añade un script inline en <head>). */
.js [data-reveal]{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.js [data-reveal].in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .js [data-reveal]{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ================= Calculadora ================= */
.calc{margin-top:52px;display:grid;grid-template-columns:1fr 1.05fr;gap:24px;align-items:stretch}
.calc-controls{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:26px;padding:38px 36px;backdrop-filter:blur(12px)}
.calc-controls .grp{margin-bottom:34px}
.calc-controls .grp:last-child{margin-bottom:0}
.calc-controls label{display:block;font-family:'General Sans';font-weight:600;font-size:14px;color:#fff;margin-bottom:16px}
.calc-controls .row{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:14px}
.calc-controls .row label{margin-bottom:0}
.calc-controls .val{font-family:'General Sans';font-weight:600;font-size:17px;color:var(--lime)}
.sys-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sys-btn{cursor:pointer;text-align:center;font-family:'General Sans';font-weight:600;font-size:14.5px;padding:14px 10px;border-radius:13px;transition:all .2s;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.04);color:rgba(255,255,255,.82)}
.sys-btn.on{border-color:var(--lime);background:var(--lime);color:var(--dark)}
.calc-controls .scale{display:flex;justify-content:space-between;font-size:12px;color:rgba(255,255,255,.4);margin-top:8px}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:100px;background:rgba(255,255,255,.16);outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:26px;height:26px;border-radius:50%;background:var(--lime);cursor:pointer;border:4px solid var(--dark);box-shadow:0 0 0 1px rgba(184,255,102,.6)}
input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:var(--lime);cursor:pointer;border:4px solid var(--dark)}
.calc-result{background:var(--lime);border-radius:26px;padding:38px 36px;position:relative;overflow:hidden}
.calc-result .blob{position:absolute;top:-70px;right:-50px;width:220px;height:220px;border-radius:50%;background:rgba(15,43,54,.06)}
.calc-result .inner{position:relative}
.calc-result .k{font-size:13px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:rgba(15,43,54,.6)}
.calc-result .big{font-family:'General Sans';font-weight:600;font-size:clamp(52px,7vw,82px);color:var(--dark);line-height:1;margin:8px 0 2px}
.calc-result .pct{font-size:15px;font-weight:600;color:rgba(15,43,54,.72);margin-bottom:30px}
.bars{display:flex;flex-direction:column;gap:16px;margin-bottom:28px}
.bar-row .bar-top{display:flex;justify-content:space-between;font-size:13.5px;font-weight:600;color:var(--dark);margin-bottom:7px}
.bar-track{height:16px;border-radius:100px;background:rgba(15,43,54,.12);overflow:hidden}
.bar-fill{height:100%;border-radius:100px;background:var(--dark);transition:width .5s cubic-bezier(.3,.7,.2,1)}
.bar-fill.aero{opacity:.4}
.calc-mini{display:flex;gap:12px;flex-wrap:wrap;border-top:1px solid rgba(15,43,54,.16);padding-top:24px}
.calc-mini .m{flex:1;min-width:120px}
.calc-mini .mv{font-family:'General Sans';font-weight:600;font-size:28px;color:var(--dark);line-height:1}
.calc-mini .ml{font-size:12.5px;color:rgba(15,43,54,.62);margin-top:4px}
.calc-note{position:relative;font-size:12.5px;line-height:1.6;color:rgba(255,255,255,.42);margin-top:22px;max-width:760px}

/* Formulario contacto */
.form{display:grid;gap:16px}
.form .field{display:flex;flex-direction:column;gap:7px}
.form label{font-size:13.5px;font-weight:600;color:var(--dark)}
.form input,.form select,.form textarea{font-family:inherit;font-size:15px;padding:13px 15px;border-radius:12px;border:1px solid #cfd8d1;background:#fff;color:var(--ink);width:100%}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--lime);border-color:var(--lime)}
.form .two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-msg{font-size:14px;font-weight:600;padding:12px 16px;border-radius:12px;display:none}
.form-msg.ok{display:block;background:#EAF7DA;color:#2f5e1a}
.form-msg.err{display:block;background:#fbe3e3;color:#8a2a2a}

/* ================= Responsive ================= */
@media (max-width:1024px){
  .hero-split,.grid-2,.calc{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr}
  .steps,.grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .main-nav,.header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .site-header.nav-open{background:#fff}
  .site-header.nav-open .mobile-nav{display:block}
  .mobile-nav{display:none;position:absolute;top:74px;left:0;right:0;background:#fff;border-top:1px solid var(--line);max-height:calc(100vh - 74px);overflow-y:auto;box-shadow:0 20px 40px -20px rgba(15,43,54,.3)}
  .mobile-nav .grp{border-bottom:1px solid var(--line)}
  .mobile-nav .grp>a,.mobile-nav .grp>span{display:block;padding:16px 32px;font-family:'General Sans';font-weight:600;font-size:16px;color:var(--dark)}
  .mobile-nav .sub{padding:0 32px 12px}
  .mobile-nav .sub a{display:block;padding:8px 0;font-size:15px;color:var(--body)}
  .mobile-cta{padding:20px 32px}
  .mobile-cta a{display:block;text-align:center}
}
@media (max-width:720px){
  .grid-3,.cells,.cluster,.blog-grid,.pros-cons,.sys-grid{grid-template-columns:1fr}
  .steps,.grid-4{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr}
  .section{padding:64px 24px}
  .container,.header-inner,.hero-inner,.page-hero-inner,.footer-inner,.cta-inner{padding-left:24px;padding-right:24px}
  .serv-row .serv-media{flex-basis:100%}
  .serv-row.reverse .serv-media{order:0}
  .page-hero{padding:120px 24px 64px}
  .dark-section{padding:64px 24px}
}