/* ==========================================================================
   NEXO Business Center — styles.css
   Concepto: "Presencia arquitectónica" — retícula, placas, coordenadas.
   Paleta: navy #0B2341 · slate #3A556A · teal #119D8A · off-white #F2F4F7 · charcoal #222B36
   ========================================================================== */

:root{
  --navy:#0B2341;
  --slate:#3A556A;
  --teal:#119D8A;
  --offwhite:#F2F4F7;
  --charcoal:#222B36;

  --grid-line:rgba(11,35,65,.10);      /* retícula navy 8-12% */
  --grid-line-light:rgba(242,244,247,.14);
  --slate-border:rgba(58,85,106,.20);   /* borde 1px slate 20% */

  --header-h:72px;
  --shell-max:1220px;
  --shell-pad:24px;

  --font-head:"Montserrat", system-ui, sans-serif;
  --font-body:"Poppins", system-ui, sans-serif;

  --radius:4px;
  --radius-max:6px;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-body);
  font-weight:400;
  font-size:1rem;
  line-height:1.7;
  color:var(--charcoal);
  background:var(--offwhite);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3{font-family:var(--font-head);margin:0;line-height:1.1;color:var(--navy);}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}

/* ---------- accessibility ---------- */
.skip-link{
  position:absolute;left:12px;top:-60px;z-index:1000;
  background:var(--navy);color:#fff;padding:10px 16px;border-radius:var(--radius);
  font-family:var(--font-body);font-size:.9rem;transition:top .2s var(--ease);
}
.skip-link:focus{top:12px;}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:2px;}

/* ---------- layout shell ---------- */
.shell{
  width:100%;max-width:var(--shell-max);margin:0 auto;
  padding-left:var(--shell-pad);padding-right:var(--shell-pad);
}

/* ---------- labels de placa ---------- */
.plate-label,.micro-label{
  font-family:var(--font-body);
  text-transform:uppercase;
  letter-spacing:.18em;
  font-size:.72rem;
  font-weight:500;
  color:var(--slate);
  margin:0;
}
.micro-label{letter-spacing:.16em;font-size:.7rem;color:var(--teal);}
.section-navy .plate-label{color:rgba(242,244,247,.62);}
.section-navy .micro-label{color:var(--teal);}

.plate-corner{
  position:absolute;top:20px;right:var(--shell-pad);
  font-family:var(--font-body);text-transform:uppercase;letter-spacing:.2em;
  font-size:.68rem;color:rgba(242,244,247,.48);z-index:2;
}
.plate-corner-dark{color:var(--slate);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-family:var(--font-body);font-weight:500;font-size:.95rem;
  letter-spacing:.01em;
  padding:14px 24px;min-height:48px;
  border-radius:var(--radius);
  border:1.5px solid transparent;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .15s var(--ease);
  text-align:center;
}
.btn-sm{padding:11px 18px;min-height:44px;font-size:.88rem;}
.btn-primary{background:var(--navy);color:#fff;border-color:var(--navy);}
.btn-primary:hover{background:var(--teal);border-color:var(--teal);}
.section-navy .btn-primary{background:var(--offwhite);color:var(--navy);border-color:var(--offwhite);}
.section-navy .btn-primary:hover{background:var(--teal);border-color:var(--teal);color:#fff;}
.btn-outline{background:transparent;color:var(--navy);border-color:var(--slate-border);}
.btn-outline:hover{border-color:var(--teal);color:var(--teal);}
.btn-outline-light{color:var(--offwhite);border-color:rgba(242,244,247,.32);}
.btn-outline-light:hover{border-color:var(--teal);color:var(--teal);}
.btn-block{width:100%;}
.btn-wa{background:var(--navy);color:#fff;border-color:var(--navy);}
.btn-wa:hover{background:var(--teal);border-color:var(--teal);}
.btn .ic{width:18px;height:18px;flex:none;}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--header-h);
  background:rgba(242,244,247,.86);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--grid-line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.scrolled{background:rgba(242,244,247,.96);box-shadow:0 1px 0 var(--grid-line);}
.header-inner{
  height:var(--header-h);display:flex;align-items:center;gap:16px;
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:36px;height:auto;}
.brand-word{
  font-family:var(--font-head);font-weight:700;font-size:1.05rem;
  color:var(--navy);line-height:1;display:flex;flex-direction:column;letter-spacing:.02em;
}
.brand-sub{
  font-family:var(--font-body);font-weight:400;font-size:.56rem;
  letter-spacing:.22em;color:var(--slate);margin-top:3px;
}
.nav-desktop{display:none;margin-left:auto;gap:26px;align-items:center;}
.nav-desktop a{
  font-family:var(--font-body);font-size:.86rem;font-weight:400;color:var(--charcoal);
  position:relative;padding:6px 0;transition:color .2s var(--ease);
}
.nav-desktop a::after{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;
  background:var(--teal);transition:width .25s var(--ease);
}
.nav-desktop a:hover{color:var(--navy);}
.nav-desktop a:hover::after{width:100%;}
.header-cta{display:none;flex:none;padding:10px 16px;min-height:44px;font-size:.85rem;}

.hamburger{
  margin-left:auto;width:44px;height:44px;flex:none;
  background:transparent;border:0;padding:10px;display:flex;flex-direction:column;
  justify-content:space-between;
}
.hamburger span{display:block;height:2px;width:100%;background:var(--navy);border-radius:2px;transition:transform .3s var(--ease),opacity .2s var(--ease);}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(9px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-9px) rotate(-45deg);}

/* mobile panel */
.mobile-panel{
  position:fixed;inset:0;z-index:99;
  background:var(--navy);
  padding:calc(var(--header-h) + 32px) var(--shell-pad) 40px;
  display:flex;flex-direction:column;gap:28px;
  opacity:0;transform:translateY(-8px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.mobile-panel:not([hidden]){opacity:1;transform:none;pointer-events:auto;}
.mobile-nav{display:flex;flex-direction:column;gap:6px;}
.mobile-nav a{
  font-family:var(--font-head);font-weight:600;font-size:1.5rem;color:var(--offwhite);
  padding:12px 0;border-bottom:1px solid rgba(242,244,247,.10);min-height:44px;display:flex;align-items:center;
}
.mobile-nav a:active{color:var(--teal);}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  position:relative;
  min-height:min(100svh,1000px);
  padding-top:var(--header-h);
  background:var(--offwhite);
  border-bottom:1px solid var(--grid-line);
  overflow:hidden;
}
.hero-grid{
  position:relative;
  max-width:var(--shell-max);margin:0 auto;
  min-height:calc(min(100svh,1000px) - var(--header-h));
  display:grid;
  grid-template-columns:1fr;
}
.hero-copy{
  padding:48px var(--shell-pad) 40px;
  display:flex;flex-direction:column;justify-content:center;gap:22px;
  position:relative;z-index:3;
}
.hero-copy .plate-coords{margin-top:8px;}
.hero h1{
  font-weight:700;
  font-size:clamp(2.2rem,8vw,4.4rem);
  line-height:1.08;
  letter-spacing:-.01em;
  max-width:14ch;
}
.hero h1 .accent{color:var(--teal);}
.hero-support{
  font-size:1.02rem;line-height:1.7;color:var(--slate);max-width:44ch;
}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px;}
.hero-ctas .btn{flex:1 1 auto;min-width:180px;}

.hero-media{
  position:relative;
  min-height:56vw;max-height:520px;
  border-top:1px solid var(--grid-line);
}
.hero-photo{
  width:100%;height:100%;object-fit:cover;object-position:center 30%;
  position:absolute;inset:0;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(11,35,65,.22),rgba(11,35,65,.06));
  pointer-events:none;
}
.hero-monogram{
  display:none;position:absolute;z-index:4;width:64px;height:auto;
  filter:drop-shadow(0 4px 14px rgba(11,35,65,.18));
}

/* ==========================================================================
   CONNECTION LINE (firma de movimiento)
   ========================================================================== */
.conn-line{
  position:absolute;left:16px;bottom:0;width:2px;height:80px;
  background:rgba(17,157,138,.18);z-index:3;overflow:hidden;
}
.conn-line .conn-fill{
  position:absolute;left:0;top:0;width:100%;height:100%;
  background:var(--teal);transform:scaleY(0);transform-origin:top;
  transition:transform 1s var(--ease);
}
.conn-line.is-lit .conn-fill{transform:scaleY(1);}

/* nodos que se encienden */
.conn-node{
  position:absolute;left:9px;width:9px;height:9px;border-radius:50%;
  background:var(--slate);border:2px solid var(--offwhite);
  transform:scale(.6);opacity:.5;
  transition:transform .5s var(--ease),opacity .5s var(--ease),background .5s var(--ease),box-shadow .5s var(--ease);
  z-index:4;
}
.section-navy .conn-node{border-color:var(--navy);}
.conn-node.is-lit{
  background:var(--teal);opacity:1;transform:scale(1);
  box-shadow:0 0 0 5px rgba(17,157,138,.16);
}
.contrast-head .conn-node{left:-24px;top:8px;}
.module .conn-node{left:-4px;top:26px;}
.conn-node-final{left:16px;top:32px;}

/* ==========================================================================
   IO REVEALS
   ========================================================================== */
/* Estados ocultos SOLO bajo data-entrance="js" (failsafe) */
html[data-entrance="js"] [data-io]:not(.io-in){
  opacity:0;transform:translateY(16px);
}
[data-io]{
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-io].io-in{opacity:1;transform:none;}

/* ==========================================================================
   SECTION SCAFFOLD
   ========================================================================== */
section[id],article[id],div[id]{scroll-margin-top:calc(var(--header-h) + 16px);}
.section-navy{background:var(--navy);color:var(--offwhite);}
.section-navy h2,.section-navy h3{color:var(--offwhite);}
.section-navy p{color:rgba(242,244,247,.82);}

.presencia,.soluciones,.por-que,.espacio,.ecosistema,.contacto{
  position:relative;
  padding:96px 0;
}
@media(min-width:900px){
  .presencia,.soluciones,.por-que,.espacio,.ecosistema,.contacto{padding:140px 0;}
}

.section-head{max-width:52ch;margin-bottom:56px;display:flex;flex-direction:column;gap:14px;}
.section-head h2{
  font-weight:700;font-size:clamp(1.7rem,3.4vw,2.7rem);line-height:1.14;letter-spacing:-.01em;
}
.section-lede{color:var(--slate);font-size:1.02rem;}
.section-navy .section-lede{color:rgba(242,244,247,.72);}

/* pulse target on nav click */
.is-target{position:relative;}
.is-target::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--teal);opacity:0;
  animation:targetPulse 1.2s var(--ease) forwards;
}
@keyframes targetPulse{
  0%{opacity:1;box-shadow:0 0 14px 2px rgba(17,157,138,.5);}
  100%{opacity:0;box-shadow:none;}
}

/* ==========================================================================
   PRESENCIA (contraste)
   ========================================================================== */
.contrast-head{position:relative;margin-bottom:64px;}
.contrast-head h2{max-width:24ch;}
.contrast-head h2{
  font-weight:700;font-size:clamp(1.9rem,4.2vw,3.2rem);line-height:1.1;letter-spacing:-.01em;
}
.contrast-head h2 .accent{color:var(--teal);}

.scenarios{
  display:grid;grid-template-columns:1fr;gap:1px;
  background:var(--grid-line-light);
  border:1px solid var(--grid-line-light);
}
.scenario{
  background:var(--navy);padding:32px 28px;position:relative;
  display:flex;flex-direction:column;gap:10px;
}
.scenario-num{
  font-family:var(--font-head);font-weight:600;font-size:.85rem;color:var(--teal);
  letter-spacing:.1em;
}
.scenario h3{font-size:1.12rem;font-weight:600;color:var(--offwhite);}
.scenario p{font-size:.94rem;color:rgba(242,244,247,.72);}

.alt-nexo{
  margin-top:56px;display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
  border-top:1px solid var(--grid-line-light);padding-top:48px;
}
.alt-figure{margin:0;}
.alt-figure img{
  width:100%;height:100%;object-fit:cover;border:1px solid rgba(242,244,247,.14);
  border-radius:var(--radius);max-height:340px;
}
.alt-text{display:flex;flex-direction:column;gap:14px;}
.alt-text p:last-child{font-size:1.08rem;line-height:1.7;color:rgba(242,244,247,.9);}

/* ==========================================================================
   SOLUCIONES (modules)
   ========================================================================== */
.soluciones{background:var(--offwhite);}
.modules{
  display:flex;flex-direction:column;gap:0;
  border-top:1px solid var(--grid-line);
  position:relative;
}
.module{
  position:relative;
  display:grid;grid-template-columns:1fr;gap:0;
  padding:44px 0;
  border-bottom:1px solid var(--grid-line);
}
.module-index{margin-bottom:6px;}
.module-num{
  font-family:var(--font-head);font-weight:800;font-size:2.4rem;color:var(--slate-border);
  line-height:1;letter-spacing:-.02em;
}
.module-star .module-num{color:rgba(17,157,138,.4);}
.module-body{position:relative;}
.star-badge{
  display:inline-block;font-family:var(--font-body);text-transform:uppercase;
  letter-spacing:.16em;font-size:.66rem;font-weight:500;color:#fff;
  background:var(--teal);padding:6px 12px;border-radius:var(--radius);margin-bottom:16px;
}
.module-titlerow{
  display:flex;flex-direction:column;gap:16px;margin-bottom:24px;
}
.ic-arch{width:36px;height:36px;color:var(--teal);margin-bottom:12px;}
.module-titlerow h3{font-size:clamp(1.4rem,3vw,1.9rem);font-weight:700;letter-spacing:-.01em;}
.module-tag{color:var(--slate);font-size:.95rem;margin-top:4px;}
.price{
  font-family:var(--font-head);font-weight:700;font-size:1.9rem;color:var(--navy);
  font-variant-numeric:tabular-nums;line-height:1;white-space:nowrap;
}
.price-from{
  display:block;font-family:var(--font-body);font-weight:400;font-size:.72rem;
  text-transform:uppercase;letter-spacing:.16em;color:var(--slate);margin-bottom:4px;
}
.price-unit{font-family:var(--font-body);font-size:.9rem;font-weight:400;color:var(--slate);}

.module-photo{margin:0 0 24px;}
.module-photo img{
  width:100%;object-fit:cover;max-height:280px;
  border:1px solid var(--slate-border);border-radius:var(--radius);
}

.module-cols{display:grid;grid-template-columns:1fr;gap:24px;margin-bottom:24px;}
.incl ul,.restr ul{display:flex;flex-direction:column;gap:8px;margin-top:12px;}
.incl li,.restr li{
  position:relative;padding-left:22px;font-size:.94rem;color:var(--charcoal);line-height:1.5;
}
.incl li::before{
  content:"";position:absolute;left:0;top:.55em;width:10px;height:6px;
  border-left:1.5px solid var(--teal);border-bottom:1.5px solid var(--teal);
  transform:rotate(-45deg);
}
.restr li{color:var(--slate);}
.restr li::before{
  content:"";position:absolute;left:0;top:.7em;width:11px;height:1.5px;background:var(--slate);
}
.price-list{
  display:flex;flex-direction:column;gap:10px;margin-bottom:24px;
  border-top:1px solid var(--grid-line);border-bottom:1px solid var(--grid-line);padding:16px 0;
}
.price-list li{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:.95rem;color:var(--slate);}
.price-list b{font-family:var(--font-head);color:var(--navy);font-variant-numeric:tabular-nums;font-size:1.05rem;}

.module-note{
  font-size:.86rem;color:var(--slate);font-style:italic;margin-bottom:24px;
  padding-left:14px;border-left:2px solid var(--slate-border);
}
.module-foot{
  display:flex;flex-direction:column;gap:16px;align-items:flex-start;
}
.hours{
  display:inline-flex;align-items:center;gap:8px;font-size:.88rem;color:var(--slate);
  font-variant-numeric:tabular-nums;
}
.ic-inline{width:17px;height:17px;flex:none;color:var(--teal);}

/* ==========================================================================
   POR QUÉ NEXO
   ========================================================================== */
.benefits{
  display:grid;grid-template-columns:1fr;gap:1px;
  background:var(--grid-line-light);border:1px solid var(--grid-line-light);
}
.benefit{
  background:var(--navy);padding:32px 28px;display:flex;flex-direction:column;gap:12px;
}
.benefit .ic-arch{width:34px;height:34px;margin-bottom:4px;}
.benefit h3{font-size:1.15rem;font-weight:600;color:var(--offwhite);}
.benefit p{font-size:.94rem;color:rgba(242,244,247,.74);}

/* ==========================================================================
   ESPACIO (galería editorial asimétrica)
   ========================================================================== */
.espacio{background:var(--offwhite);}
.gallery{display:grid;grid-template-columns:1fr;gap:16px;}
.g-item{margin:0;overflow:hidden;}
.g-item img{
  width:100%;height:100%;object-fit:cover;
  border:1px solid var(--slate-border);border-radius:var(--radius);
  transition:transform .6s var(--ease);
}
.g-item:hover img{transform:scale(1.03);}
.g-tall img{aspect-ratio:3/4;}
.g-item img{aspect-ratio:4/3;}
.g-wide img{aspect-ratio:16/9;}

/* ==========================================================================
   ECOSISTEMA
   ========================================================================== */
.eco-grid{display:grid;grid-template-columns:1fr;gap:16px;}
.eco-card{
  position:relative;background:rgba(242,244,247,.04);
  border:1px solid rgba(242,244,247,.14);border-radius:var(--radius);
  padding:28px 24px;display:flex;flex-direction:column;gap:10px;
  transition:border-color .25s var(--ease),background .25s var(--ease),transform .2s var(--ease);
}
a.eco-card:hover{border-color:var(--teal);background:rgba(17,157,138,.06);transform:translateY(-2px);}
.eco-num{
  font-family:var(--font-head);font-weight:600;font-size:.8rem;color:var(--teal);letter-spacing:.1em;
}
.eco-preview{
  position:absolute;top:20px;right:22px;font-family:var(--font-body);
  text-transform:uppercase;letter-spacing:.18em;font-size:.6rem;color:rgba(242,244,247,.42);
  border:1px solid rgba(242,244,247,.2);border-radius:2px;padding:3px 7px;
}
.eco-card .ic-arch{width:32px;height:32px;color:var(--teal);margin:4px 0 6px;}
.eco-card h3{font-size:1.12rem;font-weight:600;color:var(--offwhite);}
.eco-card p{font-size:.9rem;color:rgba(242,244,247,.72);}
.flow-steps{
  counter-reset:step;display:flex;flex-direction:column;gap:8px;margin-top:8px;
}
.flow-steps li{
  position:relative;padding-left:30px;font-size:.88rem;color:rgba(242,244,247,.82);counter-increment:step;
}
.flow-steps li::before{
  content:counter(step);position:absolute;left:0;top:0;
  width:20px;height:20px;border-radius:50%;border:1px solid var(--teal);color:var(--teal);
  font-family:var(--font-head);font-size:.68rem;display:flex;align-items:center;justify-content:center;
}

.eco-demo{
  margin-top:32px;padding:28px;border:1px dashed rgba(242,244,247,.24);border-radius:var(--radius);
  display:flex;flex-direction:column;gap:18px;
}
.demo-text p:last-child{color:rgba(242,244,247,.9);font-size:1rem;}
.demo-form{display:flex;flex-wrap:wrap;gap:12px;}
.demo-form input{
  flex:1 1 220px;min-height:48px;padding:12px 16px;
  background:rgba(242,244,247,.06);border:1px solid rgba(242,244,247,.2);border-radius:var(--radius);
  color:var(--offwhite);font-family:var(--font-body);font-size:.95rem;
}
.demo-form input::placeholder{color:rgba(242,244,247,.45);}
.demo-form input:focus-visible{outline:2px solid var(--teal);outline-offset:2px;}
.demo-msg{font-size:.88rem;color:var(--teal);min-height:1.2em;}

/* ==========================================================================
   CONTACTO
   ========================================================================== */
.contacto-inner{display:grid;grid-template-columns:1fr;gap:48px;}
.contacto-inner>*{min-width:0;}
.data-row dd{overflow-wrap:anywhere;}
.contacto-copy{display:flex;flex-direction:column;gap:20px;}
.contacto-copy h2{font-size:clamp(1.9rem,4.2vw,3rem);font-weight:700;line-height:1.12;letter-spacing:-.01em;}
.contacto-copy h2 .accent{color:var(--teal);}
.contacto-ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px;}
.contacto-ctas .btn{flex:1 1 auto;min-width:200px;}

.data-list{display:flex;flex-direction:column;gap:22px;margin:0;}
.data-row{display:flex;flex-direction:column;gap:6px;padding-bottom:22px;border-bottom:1px solid rgba(242,244,247,.12);}
.data-row:last-child{border-bottom:0;}
.data-row dt{
  display:flex;align-items:center;gap:9px;
  font-family:var(--font-body);text-transform:uppercase;letter-spacing:.14em;font-size:.72rem;
  color:rgba(242,244,247,.6);
}
.data-row dd{margin:0;font-size:.98rem;color:rgba(242,244,247,.9);line-height:1.6;}
.data-row dd a{color:var(--teal);}
.data-row dd a:hover{text-decoration:underline;}
.contacto-note{margin-top:24px;font-size:.86rem;color:rgba(242,244,247,.55);font-style:italic;}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{background:var(--navy);color:var(--offwhite);padding:64px 0 28px;border-top:1px solid rgba(242,244,247,.1);}
.footer-inner{display:grid;grid-template-columns:1fr;gap:40px;}
.footer-logo{width:220px;max-width:70%;height:auto;background:#fff;padding:14px 18px;border-radius:var(--radius);}
.footer-tagline{
  margin-top:18px;font-family:var(--font-head);font-weight:600;font-size:1.02rem;color:var(--offwhite);
}
.footer-cols{display:grid;grid-template-columns:1fr 1fr;gap:32px;}
.footer-cols .micro-label{margin-bottom:14px;color:rgba(242,244,247,.55);}
.footer-cols ul{display:flex;flex-direction:column;gap:10px;}
.footer-cols a{font-size:.92rem;color:rgba(242,244,247,.82);}
.footer-cols a:hover{color:var(--teal);}
.footer-addr{font-size:.9rem;color:rgba(242,244,247,.72);line-height:1.6;}
.footer-legal{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(242,244,247,.1);
  display:flex;flex-direction:column;gap:10px;
}
.footer-legal p{font-size:.78rem;color:rgba(242,244,247,.5);}
.footer-plate{text-transform:uppercase;letter-spacing:.16em;font-size:.66rem!important;}

/* ==========================================================================
   WHATSAPP FLOAT
   ========================================================================== */
.wa-float{
  position:fixed;right:18px;bottom:18px;z-index:90;
  width:52px;height:52px;border-radius:50%;
  background:var(--navy);color:#fff;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(242,244,247,.14);
  box-shadow:0 4px 14px rgba(11,35,65,.28);
  opacity:0;transform:translateY(12px) scale(.9);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .25s var(--ease);
}
.wa-float.is-visible{opacity:1;transform:none;pointer-events:auto;}
.wa-float:hover{background:var(--teal);}
.wa-float svg{width:26px;height:26px;}

/* ==========================================================================
   RESPONSIVE — tablet
   ========================================================================== */
@media(min-width:640px){
  .scenarios{grid-template-columns:1fr 1fr;}
  .benefits{grid-template-columns:1fr 1fr;}
  .eco-grid{grid-template-columns:1fr 1fr;}
  .gallery{grid-template-columns:1fr 1fr;}
  .module-cols{grid-template-columns:1fr 1fr;}
  .footer-cols{grid-template-columns:1fr 1fr 1fr;}
  .module-titlerow{flex-direction:row;justify-content:space-between;align-items:flex-start;}
  .module-foot{flex-direction:row;justify-content:space-between;align-items:center;width:100%;}
}

/* ==========================================================================
   RESPONSIVE — desktop
   ========================================================================== */
@media(min-width:900px){
  :root{--shell-pad:40px;--header-h:78px;}
  .nav-desktop{display:flex;}
  .header-cta{display:inline-flex;}
  .hamburger{display:none;}
  .mobile-panel{display:none;}

  /* hero asimétrico */
  .hero-grid{
    grid-template-columns:58% 42%;
    align-items:stretch;
  }
  .hero-copy{padding:64px 56px 64px var(--shell-pad);}
  .hero-media{
    min-height:auto;max-height:none;
    border-top:0;border-left:1px solid var(--grid-line);
    margin-right:calc((100vw - min(100vw,var(--shell-max)))/-2);
  }
  .hero-monogram{
    display:block;left:calc(58% - 32px);top:calc(50% - 40px);
  }
  .conn-line.hero-conn{left:calc(58% - 1px);bottom:0;height:120px;}

  .contrast-head{margin-left:40px;}
  .contrast-head .conn-node{left:-40px;}

  .scenarios{grid-template-columns:repeat(4,1fr);}
  .benefits{grid-template-columns:repeat(5,1fr);}
  .eco-grid{grid-template-columns:repeat(3,1fr);}

  .alt-nexo{grid-template-columns:1fr 1fr;gap:48px;}
  .alt-figure img{max-height:400px;}

  .module{grid-template-columns:120px 1fr;gap:40px;padding:64px 0;}
  .module-index{margin-bottom:0;}
  .module-num{font-size:3.4rem;}
  .module .conn-node{left:-2px;top:8px;}

  .contacto-inner{grid-template-columns:1.1fr 1fr;gap:80px;align-items:start;}

  .footer-inner{grid-template-columns:1fr 1.4fr;gap:64px;align-items:start;}
  .footer-legal{flex-direction:row;justify-content:space-between;align-items:center;}

  .wa-float{width:56px;height:56px;right:28px;bottom:28px;}

  /* editorial gallery asimétrica */
  .gallery{
    grid-template-columns:repeat(3,1fr);
    grid-auto-rows:200px;gap:20px;
  }
  .g-item img{aspect-ratio:auto;height:100%;}
  .g-tall{grid-row:span 2;}
  .g-wide{grid-column:span 2;}
}

@media(min-width:1200px){
  .hero h1{font-size:clamp(2.6rem,5.2vw,4.4rem);}
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  [data-io]{opacity:1!important;transform:none!important;}
  .conn-line .conn-fill{transform:scaleY(1)!important;}
}