:root{
  /* Dataiprofit corporate palette */
  --azul-profundo:#081f35;
  --azul-dataiprofit:#123b66;
  --cian-innovacion:#00a6c8;
  --turquesa-datos:#20c4b7;
  --azul-niebla:#e8f2f7;
  --gris-grafito:#273746;
  --blanco-digital:#ffffff;

  /* text/UI floating directly over the 3D world (dark bg) */
  --ink:#ffffff;
  --ink-dim:rgba(232,242,247,.8);
  --accent:#00a6c8;
  --accent-2:#20c4b7;
  --bg-1:#081f35;
  --line:rgba(255,255,255,.16);
  --line-strong:rgba(255,255,255,.28);
  --node-blue:#20c4b7;
  --glass-dark:rgba(6,17,30,.58);
  --glass-dark-strong:rgba(6,17,30,.78);
  --text-halo:0 1px 18px rgba(3,10,18,.6), 0 1px 4px rgba(3,10,18,.7);

  /* content cards — light "tarjetas" per the brand spec, dark grafito text */
  --card-bg:rgba(255,255,255,.94);
  --card-bg-strong:rgba(255,255,255,1);
  --card-text:#273746;
  --card-text-dim:rgba(39,55,70,.72);
  --card-line:rgba(39,55,70,.16);

  --serif:'Fraunces', ui-serif, Georgia, serif;
  --mono:'IBM Plex Mono', ui-monospace, monospace;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg-1);
  color:var(--ink);
  font-family:var(--mono);
  overflow-x:hidden;
  cursor:default;
}

#sky{
  position:fixed;
  inset:0;
  z-index:0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,166,200,0.16), transparent 60%),
    linear-gradient(180deg, #081f35 0%, #0c2a4c 45%, #081f35 100%);
  transition:filter .6s ease;
}

#scene{
  position:fixed;
  inset:0;
  z-index:1;
  display:block;
  width:100vw;
  height:100vh;
}

#vignette{
  position:fixed;
  inset:0;
  z-index:4;
  pointer-events:none;
  background:radial-gradient(ellipse 80% 75% at 50% 50%, transparent 45%, rgba(0,0,0,0.45) 100%);
}

#grain{
  position:fixed;
  inset:0;
  z-index:5;
  pointer-events:none;
  opacity:.035;
  mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

#topbar{
  position:fixed;
  top:0;left:0;right:0;
  z-index:20;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:1.6rem clamp(1.2rem, 4vw, 3rem);
  pointer-events:none;
}
#topbar .brand{
  display:flex;
  align-items:center;
  gap:.55rem;
  color:var(--ink);
  text-shadow:var(--text-halo);
  transform-origin:left center;
  will-change:transform;
}
#topbar .brand-mark{
  color:var(--node-blue);
  flex-shrink:0;
  filter:drop-shadow(0 0 5px rgba(3,10,18,.9));
}
#topbar .brand-word{
  font-family:var(--serif);
  font-weight:600;
  font-size:1.25rem;
  letter-spacing:.02em;
}
#topbar .dot{ color:var(--accent); }

#topbar nav{
  display:flex;
  align-items:center;
  gap:1.4rem;
}
#topbar nav a{
  pointer-events:auto;
  color:var(--ink-dim);
  text-decoration:none;
  font-size:.78rem;
  letter-spacing:.05em;
  text-shadow:var(--text-halo);
  border-bottom:1px solid transparent;
  transition:color .3s, border-color .3s;
}
#topbar nav a:hover{ color:var(--accent); border-color:var(--accent); }

.lang-switch{
  display:flex;
  align-items:center;
  gap:.35rem;
  pointer-events:auto;
}
.lang-btn{
  pointer-events:auto;
  background:var(--glass-dark);
  border:1px solid var(--line-strong);
  border-radius:999px;
  color:var(--ink-dim);
  font-family:var(--mono);
  font-size:.68rem;
  letter-spacing:.05em;
  line-height:1;
  width:1.9rem;
  height:1.9rem;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  opacity:.7;
  transition:opacity .3s, border-color .3s, color .3s, transform .3s;
}
.lang-btn span{ font-size:.9rem; }
.lang-btn:hover{ opacity:1; border-color:var(--accent); }
.lang-btn.active{
  opacity:1;
  color:var(--ink);
  border-color:var(--accent);
  box-shadow:0 0 10px rgba(0,166,200,.4);
}

#progress-rail{
  position:fixed;
  right:clamp(1rem,3vw,2.2rem);
  top:14%;
  height:72%;
  width:2px;
  background:var(--line);
  z-index:20;
  border-radius:2px;
  pointer-events:none;
}
#progress-fill{
  position:absolute;
  top:0;left:0;right:0;
  height:0%;
  background:linear-gradient(180deg, var(--accent), var(--accent-2));
  border-radius:2px;
  box-shadow:0 0 12px rgba(0,166,200,.5);
}

main#journey{
  position:relative;
  z-index:10;
}

.zone{
  position:relative;
  min-height:150vh;
  display:flex;
  align-items:center;
  padding:0 clamp(1.4rem, 6vw, 6rem);
}
#zone-hero, #zone-contact{ min-height:100vh; }

.zone-inner{
  max-width:1180px;
  width:100%;
  margin:0 auto;
}
.zone-inner.narrow{ max-width:760px; }
.zone-inner.wide{ max-width:1300px; }

.eyebrow{
  font-family:var(--mono);
  text-transform:uppercase;
  letter-spacing:.28em;
  font-size:.7rem;
  font-weight:500;
  color:var(--accent);
  text-shadow:var(--text-halo);
  margin:0 0 1.4rem;
  opacity:0;
  transform:translateY(14px);
  transition:opacity .8s ease, transform .8s ease;
}

.mega{
  font-family:var(--serif);
  font-weight:500;
  font-size:clamp(3rem, 9vw, 8.5rem);
  line-height:.98;
  letter-spacing:-.01em;
  margin:0 0 1.6rem;
  text-shadow:var(--text-halo);
  opacity:0;
  transform:translateY(40px);
  transition:opacity 1.1s ease, transform 1.1s cubic-bezier(.16,1,.3,1);
}
.mega em{
  font-style:italic;
  font-weight:500;
  background:linear-gradient(90deg, var(--accent), var(--azul-dataiprofit));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  text-shadow:none;
  filter:drop-shadow(0 1px 14px rgba(3,10,18,.7));
}

.big{
  font-family:var(--serif);
  font-weight:500;
  font-size:clamp(2.2rem, 5.4vw, 4.6rem);
  line-height:1.04;
  letter-spacing:-.01em;
  margin:0 0 1.6rem;
  text-shadow:var(--text-halo);
  opacity:0;
  transform:translateY(34px);
  transition:opacity .9s ease, transform .9s cubic-bezier(.16,1,.3,1);
}
.big.serif-em{ font-style:italic; }

.lede{
  font-family:var(--mono);
  font-size:clamp(.92rem, 1.3vw, 1.12rem);
  line-height:1.7;
  color:var(--ink-dim);
  text-shadow:var(--text-halo);
  max-width:640px;
  margin:0 0 1.4rem;
  opacity:0;
  transform:translateY(24px);
  transition:opacity .9s ease .1s, transform .9s cubic-bezier(.16,1,.3,1) .1s;
}

.zone.in-view .eyebrow,
.zone.in-view .mega,
.zone.in-view .big,
.zone.in-view .lede{
  opacity:1;
  transform:translateY(0);
}

.hero-inner{ text-align:left; }

.scroll-cue{
  display:flex;
  align-items:center;
  gap:.8rem;
  margin-top:2.4rem;
  color:var(--ink-dim);
  font-size:.68rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  text-shadow:var(--text-halo);
  opacity:0;
  transition:opacity 1s ease .4s;
}
.zone.in-view .scroll-cue{ opacity:1; }
.scroll-line{
  width:1px;height:46px;
  background:var(--line-strong);
  position:relative;
  overflow:hidden;
}
.scroll-line i{
  position:absolute;
  top:-40%;left:0;
  width:100%;height:40%;
  background:linear-gradient(180deg, transparent, var(--accent));
  animation:scrollDrop 1.8s ease-in-out infinite;
}
@keyframes scrollDrop{
  0%{ top:-40%; }
  100%{ top:100%; }
}

.benefit-trail{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:1.1rem;
}
.benefit-trail li{
  display:flex;
  align-items:baseline;
  gap:1.4rem;
  padding-bottom:1.1rem;
  border-bottom:1px solid var(--line);
  opacity:0;
  transform:translateX(-24px);
  transition:opacity .8s ease, transform .8s cubic-bezier(.16,1,.3,1);
}
.zone.in-view .benefit-trail li{ opacity:1; transform:translateX(0); }
.zone.in-view .benefit-trail li:nth-child(1){ transition-delay:.05s; }
.zone.in-view .benefit-trail li:nth-child(2){ transition-delay:.18s; }
.zone.in-view .benefit-trail li:nth-child(3){ transition-delay:.31s; }
.zone.in-view .benefit-trail li:nth-child(4){ transition-delay:.44s; }
.benefit-trail .num{
  font-family:var(--serif);
  font-style:italic;
  font-size:1.6rem;
  color:var(--accent-2);
  text-shadow:var(--text-halo);
  min-width:2.6rem;
}
.benefit-trail .txt{
  font-size:clamp(1rem, 1.6vw, 1.35rem);
  color:var(--ink);
  font-family:var(--serif);
  text-shadow:var(--text-halo);
  line-height:1.3;
}

.service-islands{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(240px,1fr));
  gap:1.4rem;
  margin-top:1rem;
}
.island{
  background:var(--card-bg);
  border:1px solid var(--card-line);
  border-radius:18px;
  padding:1.8rem 1.6rem;
  backdrop-filter:blur(10px);
  box-shadow:0 8px 28px rgba(8,31,53,.22);
  opacity:0;
  transform:translateY(30px) scale(.97);
  transition:opacity .8s ease, transform .8s cubic-bezier(.16,1,.3,1), border-color .3s;
}
.zone.in-view .island{ opacity:1; transform:translateY(0) scale(1); }
.zone.in-view .island:nth-child(1){ transition-delay:.05s; }
.zone.in-view .island:nth-child(2){ transition-delay:.2s; }
.zone.in-view .island:nth-child(3){ transition-delay:.35s; }
.island:hover{ border-color:var(--accent); }
.island-index{
  font-family:var(--serif);
  font-style:italic;
  color:var(--azul-dataiprofit);
  font-size:1.4rem;
}
.island h3{
  font-family:var(--serif);
  font-weight:500;
  font-size:1.3rem;
  margin:.6rem 0 .5rem;
  color:var(--card-text);
}
.island p{
  font-size:.85rem;
  color:var(--card-text-dim);
  line-height:1.6;
  margin:0;
}

.tag-forest{
  display:flex;
  flex-wrap:wrap;
  gap:.7rem;
  margin-top:1rem;
}
.tag-forest span{
  font-family:var(--mono);
  font-size:.82rem;
  font-weight:500;
  color:var(--card-text);
  background:var(--card-bg);
  border:1px solid var(--card-line);
  border-radius:999px;
  padding:.55rem 1.1rem;
  backdrop-filter:blur(8px);
  box-shadow:0 2px 10px rgba(8,31,53,.16);
  opacity:0;
  transform:translateY(16px);
  transition:opacity .6s ease, transform .6s cubic-bezier(.16,1,.3,1), border-color .3s, color .3s, background .3s;
}
.zone.in-view .tag-forest span{ opacity:1; transform:translateY(0); }
.tag-forest span:hover{ border-color:var(--accent); color:var(--azul-dataiprofit); background:var(--card-bg-strong); }
.tag-forest span:nth-child(1){ transition-delay:.02s; }
.tag-forest span:nth-child(2){ transition-delay:.06s; }
.tag-forest span:nth-child(3){ transition-delay:.1s; }
.tag-forest span:nth-child(4){ transition-delay:.14s; }
.tag-forest span:nth-child(5){ transition-delay:.18s; }
.tag-forest span:nth-child(6){ transition-delay:.22s; }
.tag-forest span:nth-child(7){ transition-delay:.26s; }
.tag-forest span:nth-child(8){ transition-delay:.3s; }
.tag-forest span:nth-child(9){ transition-delay:.34s; }
.tag-forest span:nth-child(10){ transition-delay:.38s; }
.tag-forest span:nth-child(11){ transition-delay:.42s; }
.tag-forest span:nth-child(12){ transition-delay:.46s; }
.tag-forest span:nth-child(13){ transition-delay:.5s; }

.partner-wall{
  display:flex;
  flex-wrap:wrap;
  gap:1.6rem 3.2rem;
  margin-top:2.2rem;
  padding-top:2.2rem;
  border-top:1px solid var(--line);
}
.partner-wall span{
  font-family:var(--serif);
  font-style:italic;
  font-weight:600;
  font-size:clamp(1.2rem, 2.4vw, 1.8rem);
  color:var(--ink);
  text-shadow:var(--text-halo);
  opacity:0;
  transform:translateY(18px);
  transition:opacity .7s ease, transform .7s cubic-bezier(.16,1,.3,1), color .3s;
}
.zone.in-view .partner-wall span{ opacity:1; transform:translateY(0); }
.partner-wall span:hover{ color:var(--accent); }
.partner-wall span:nth-child(1){ transition-delay:.05s; }
.partner-wall span:nth-child(2){ transition-delay:.13s; }
.partner-wall span:nth-child(3){ transition-delay:.21s; }
.partner-wall span:nth-child(4){ transition-delay:.29s; }
.partner-wall span:nth-child(5){ transition-delay:.37s; }
.partner-wall span:nth-child(6){ transition-delay:.45s; }

.partner-caption{
  margin-top:1.7rem;
  font-family:var(--mono);
  font-size:.75rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-dim);
  text-shadow:var(--text-halo);
  opacity:0;
  transition:opacity .9s ease .5s;
}
.zone.in-view .partner-caption{ opacity:1; }

.contact-link{
  display:inline-block;
  margin-top:1rem;
  font-family:var(--mono);
  font-size:clamp(1.1rem,2vw,1.5rem);
  color:var(--accent);
  text-decoration:none;
  border-bottom:1px solid var(--accent);
  text-shadow:var(--text-halo);
  padding-bottom:.2rem;
  opacity:0;
  transform:translateY(20px);
  transition:opacity .9s ease .2s, transform .9s cubic-bezier(.16,1,.3,1) .2s, color .3s;
}
.zone.in-view .contact-link{ opacity:1; transform:translateY(0); }
.contact-link:hover{ color:var(--accent-2); border-color:var(--accent-2); }

#zone-contact footer{
  margin-top:4rem;
  font-size:.7rem;
  letter-spacing:.1em;
  color:rgba(232,242,247,.55);
  text-transform:uppercase;
}

@media (max-width: 640px){
  .zone{ padding:0 1.2rem; }
  .island{ padding:1.4rem 1.2rem; }

  #topbar{
    flex-wrap:wrap;
    gap:.7rem;
    padding:1.1rem 1.2rem;
  }
  #topbar .brand-word{ font-size:1.05rem; }
  #topbar nav{
    width:100%;
    justify-content:space-between;
    gap:.7rem;
  }
  #topbar nav a{ font-size:.68rem; }
}