:root{
  /* Paleta basada en SCHWENKE.png: fondo gris claro y rojo para acentos */
  --bg:#b1b0b0;        /* fondo gris más claro */
  --bg-2:#969696;      /* fondo secundario gris más claro */
  --surface:#ffffff;   /* superficies / tarjetas siguen blancas para contraste */
  --surface-2:#f3f3f3; 
  --line:#c7c7c7;
  --line-soft:#d1d1d1;
  --steel:#f1f1f1;     /* grises claros para textos sobre fondo oscuro */
  --steel-2:#dcdcdc;
  --fog:#ececec;       /* color principal de texto claro */
  --white:#ffffff;     /* usado para fondos claros */
  --surface-text:#2a2a2a; /* texto oscuro para contenido en tarjetas blancas */
  --soft-grey:#7d7d7d;   /* gris suave para formularios y elementos secundarios */
  --accent:#9c1e1e;    /* rojo del logo (más sutil y profesional) */
  --accent-soft:#bb3838;
  --accent-glow:rgba(156,30,30,.12);
  --hero-glow:rgba(255,255,255,.28);
  --hero-glow-soft:rgba(150,150,150,.18);
  --display:"Archivo",sans-serif;
  --body:"Hanken Grotesk",sans-serif;
  --mono:"IBM Plex Mono",monospace;
  --ease:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--body);
  background:var(--bg);
  color:var(--fog);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 0%,rgba(0,0,0,.55),transparent 75%);
  opacity:.5;
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.wrap{max-width:1240px;margin:0 auto;padding:0 28px;position:relative;z-index:2}
.mono{font-family:var(--mono);font-weight:500;letter-spacing:.16em;text-transform:uppercase;font-size:11px}
.accent{color:var(--accent)}
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 28px;
  border-bottom:1px solid transparent;
  transition:background .4s var(--ease),border-color .4s var(--ease),padding .4s var(--ease);
}
nav.scrolled{
  background:rgba(24,24,24,.95);backdrop-filter:blur(6px);
  border-bottom:1px solid rgba(255,255,255,.08);
  padding:12px 28px;
  box-shadow:0 6px 18px rgba(0,0,0,.18);
}
nav.scrolled .brand,
nav.scrolled .nav-links a{
  color:var(--white);
}
nav.scrolled .nav-links a:hover{
  color:var(--accent-soft);
}
.brand{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--fog)}
..brand .mk{
  width:30px;height:30px;border:2px solid var(--accent);position:relative;flex:0 0 auto;
  transform:rotate(45deg);transition:transform .5s var(--ease);
}
.brand .mk::before{content:"";position:absolute;inset:5px;background:var(--accent)}
.brand:hover .mk{transform:rotate(135deg)}
.brand-logo{width:56px;height:56px;object-fit:contain;flex:0 0 auto;}
.foot .brand-logo{width:50px;height:50px;}
.brand b{font-family:var(--display);font-weight:800;letter-spacing:.34em;font-size:17px;padding-left:.34em}
.nav-links{display:flex;gap:6px;align-items:center;flex-direction:row}
.nav-item{position:relative}
.nav-links a{
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--fog);text-decoration:none;padding:9px 15px;border-radius:2px;position:relative;
  transition:color .3s var(--ease), background .3s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:-6px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease);
}
.nav-links a:hover{color:var(--accent)}
.nav-links a:hover::after{transform:scaleX(1)}
.submenu{
  position:absolute;top:calc(100% + 12px);left:0;min-width:150px;
  background:rgba(24,24,24,.96);border:1px solid rgba(255,255,255,.12);
  box-shadow:0 18px 40px rgba(0,0,0,.18);border-radius:4px;padding:6px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease);
}
.has-submenu:hover .submenu{opacity:1;visibility:visible;transform:translateY(0)}
.submenu a{display:block;color:var(--white);padding:10px 12px}
.submenu a::after{display:none}
.submenu a.nav-cta::after{display:none!important}
.submenu a:hover{background:rgba(255,255,255,.08);color:var(--accent-soft)}
.nav-cta{
  color:var(--accent)!important;
  background:rgba(255,90,31,.08);
  border-radius:3px;
  box-shadow:inset 0 0 12px rgba(255,90,31,.1);
  transition:all .3s var(--ease);
}
.nav-cta::after{
  transform:scaleX(1)!important;
  display:block!important;
}
.nav-cta.active-pulse{
  animation:pulse-glow .6s ease-out forwards;
}
@keyframes pulse-glow{
  0%{
    box-shadow:inset 0 0 12px rgba(255,90,31,.1), 0 0 8px rgba(255,90,31,.4);
  }
  50%{
    box-shadow:inset 0 0 12px rgba(255,90,31,.2), 0 0 16px rgba(255,90,31,.6);
  }
  100%{
    box-shadow:inset 0 0 12px rgba(255,90,31,.1), 0 0 8px rgba(255,90,31,.3);
  }
}
.menu-btn{
  display:none;background:none;border:1px solid var(--line);color:var(--fog);
  padding:8px 10px;border-radius:3px;cursor:pointer;font-family:var(--mono);font-size:11px;
}
header{position:relative;min-height:100vh;display:flex;align-items:center;padding:140px 0 80px;overflow:hidden}
.hero-glow{
  position:absolute;top:-10%;right:-10%;width:60vw;height:60vw;max-width:760px;max-height:760px;
  background:radial-gradient(circle,var(--hero-glow) 0%,var(--hero-glow-soft) 42%,transparent 68%);z-index:0;
  animation:float 14s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(-30px,30px)}}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--accent);margin-bottom:26px}
.eyebrow::before{content:"";width:36px;height:1px;background:var(--accent)}
h1{
  font-family:var(--display);font-weight:900;line-height:.96;letter-spacing:-.02em;
  font-size:clamp(46px,7vw,92px);color:var(--accent);margin-bottom:26px;
}
h1 .ln{display:block;overflow:hidden}
h1 .ln span{display:block;transform:translateY(105%);animation:rise .9s var(--ease) forwards}
h1 .ln:nth-child(2) span{animation-delay:.1s}
h1 .ln:nth-child(3) span{animation-delay:.2s}
@keyframes rise{to{transform:translateY(0)}}
.lead{font-size:18px;color:var(--steel-2);max-width:520px;margin-bottom:34px;
  opacity:0;animation:fade .9s var(--ease) .45s forwards}
@keyframes fade{to{opacity:1}}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;opacity:0;animation:fade .9s var(--ease) .6s forwards}
.btn{
  font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;
  padding:16px 28px;text-decoration:none;border-radius:3px;transition:all .35s var(--ease);
  display:inline-flex;align-items:center;gap:10px;border:1px solid transparent;
}
.btn-primary{background:var(--accent);color:var(--white);font-weight:600}
.btn-primary:hover{background:var(--accent-soft);transform:translateY(-2px);box-shadow:0 12px 30px -10px var(--accent-glow)}
.btn-ghost{border-color:var(--line);color:var(--fog)}
.btn-ghost:hover{border-color:var(--accent);background:var(--surface)}
.btn .arr{transition:transform .35s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.hero-card{
  position:relative;border:1px solid rgba(255,255,255,.18);background:linear-gradient(160deg,rgba(126,126,126,.96) 0%,rgba(88,88,88,.96) 48%,rgba(62,62,62,.98) 100%);
  padding:30px;border-radius:6px;opacity:0;animation:fade 1s var(--ease) .5s forwards;
  box-shadow:0 22px 55px rgba(0,0,0,.16);
}
.hero-card .corner{position:absolute;width:14px;height:14px;border:2px solid var(--accent)}
.hc-tl{top:-1px;left:-1px;border-right:0;border-bottom:0}
.hc-br{bottom:-1px;right:-1px;border-left:0;border-top:0}
.hero-card .tag{color:var(--surface-text);margin-bottom:22px;display:flex;justify-content:space-between}
.specs{display:grid;gap:0}
.spec{display:flex;justify-content:space-between;align-items:center;padding:15px 0;border-top:1px solid var(--line-soft)}
.spec:first-child{border-top:0}
.spec .k{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--steel);text-shadow:0 1px 2px rgba(0,0,0,.28)}
.spec .v{font-family:var(--display);font-weight:700;color:var(--fog);font-size:15px;text-shadow:0 1px 2px rgba(0,0,0,.28)}
.spec .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-glow)}
.ticker{margin-top:64px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:18px 0;overflow:hidden;white-space:nowrap;position:relative;z-index:2}
.ticker-track{display:inline-flex;gap:48px;animation:scroll 26s linear infinite}
.ticker span{font-family:var(--display);font-weight:800;font-size:15px;letter-spacing:.18em;text-transform:uppercase;color:var(--steel)}
.ticker span i{color:var(--accent);font-style:normal;margin-right:48px}
@keyframes scroll{to{transform:translateX(-50%)}}
section{position:relative;padding:110px 0;z-index:2}
.sec-head{margin-bottom:60px;max-width:760px}
.sec-head .mono{color:var(--accent);display:block;margin-bottom:18px}
.sec-head h2{font-family:var(--display);font-weight:800;font-size:clamp(30px,4.2vw,52px);
  line-height:1.04;letter-spacing:-.015em;color:var(--accent)}
.num{font-family:var(--mono);color:var(--line);font-weight:600}
.reveal{opacity:1;transform:none;transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.about-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:34px;
  position:relative;overflow:hidden;transition:border-color .4s var(--ease),transform .4s var(--ease);
}
.card::before{content:"";position:absolute;top:0;left:0;width:100%;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.card:hover{border-color:var(--steel);transform:translateY(-4px)}
.card:hover::before{transform:scaleX(1)}
.card .ci{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:16px;display:block}
.card h3{font-family:var(--display);font-weight:700;font-size:21px;color:var(--accent);margin-bottom:14px}
.card p{color:var(--surface-text);font-size:15px}
.card.lg{grid-column:span 12}
.card.half{grid-column:span 4}
.card.third{grid-column:span 4}
.vals{list-style:none;display:grid;gap:12px;margin-top:6px}
.vals li{display:flex;gap:12px;align-items:flex-start;color:var(--surface-text);font-size:15px}
.vals li::before{content:"";width:8px;height:8px;margin-top:7px;flex:0 0 auto;
  background:var(--accent);transform:rotate(45deg)}
.serv-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.serv{
  background:linear-gradient(160deg,var(--surface),var(--bg-2));border:1px solid var(--line);
  border-radius:6px;padding:40px;position:relative;overflow:hidden;transition:all .45s var(--ease);
  min-height:280px;display:flex;flex-direction:column;justify-content:space-between;
}
.serv:hover{border-color:var(--accent);background:linear-gradient(160deg,var(--surface-2),var(--bg-2))}
.serv .big-n{position:absolute;top:18px;right:26px;font-family:var(--display);font-weight:900;
  font-size:88px;line-height:1;color:var(--line);transition:color .45s var(--ease),transform .45s var(--ease)}
.serv:hover .big-n{color:var(--accent-glow);transform:translateY(-4px)}
.serv h3{font-family:var(--display);font-weight:800;font-size:25px;color:var(--accent);margin-bottom:16px;max-width:70%}
.serv p{color:var(--surface-text);font-size:15px}
.serv .ic{width:46px;height:46px;border:1px solid var(--line);border-radius:4px;display:grid;
  place-items:center;margin-bottom:24px;transition:all .45s var(--ease)}
.serv:hover .ic{border-color:var(--accent);background:var(--accent-glow)}
.serv .ic i{font-size:22px;color:var(--accent)}
.proj-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.proj-method{border-left:2px solid var(--accent);padding-left:26px}
.proj-method p{color:var(--surface-text);font-size:16px;margin-bottom:24px}
.chips{display:flex;gap:10px;flex-wrap:wrap}
.chip{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  border:1px solid var(--line);padding:8px 14px;border-radius:30px;color:var(--steel-2)}
.proj-list{display:grid;gap:2px;background:var(--line);border:1px solid var(--line);border-radius:6px;overflow:hidden}
.proj-item{background:var(--surface);padding:26px 30px;transition:background .35s var(--ease);position:relative}
.proj-item:hover{background:var(--surface-2)}
.proj-item .pn{font-family:var(--mono);font-size:11px;color:var(--accent);letter-spacing:.16em}
.proj-item h4{font-family:var(--display);font-weight:700;font-size:19px;color:var(--accent);margin:8px 0 8px}
.proj-item p{color:var(--surface-text);font-size:14px}
#contacto{padding-bottom:60px}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;
  background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:48px;overflow:hidden;position:relative}
.contact-info h2{font-family:var(--display);font-weight:800;font-size:34px;color:var(--accent);margin-bottom:8px;line-height:1.05}
.contact-info .sub{color:var(--soft-grey);margin-bottom:34px;font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase}
.cline{display:flex;gap:16px;align-items:flex-start;padding:16px 0;border-top:1px solid var(--line-soft)}
.cline:first-of-type{border-top:0}
.cline .ic{width:38px;height:38px;flex:0 0 auto;border:1px solid var(--line);border-radius:4px;display:grid;place-items:center;color:var(--accent)}
.cline .ic svg{width:22px;height:22px;stroke:currentColor}
.cline .lbl{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--soft-grey);display:block;margin-bottom:3px}
.cline a,.cline span.txt{color:var(--surface-text);text-decoration:none;font-size:15px;font-weight:500}
.cline a:hover{color:var(--accent)}
.form{display:grid;gap:16px;align-content:start}
.field{display:grid;gap:7px}
.field label{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--soft-grey)}
.field input,.field textarea{
  background:var(--bg-2);border:1px solid rgba(255,255,255,.14);border-radius:4px;padding:13px 15px;
  color:var(--white);font-family:var(--body);font-size:15px;transition:border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease)
}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.68)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(156,30,30,.12);background:rgba(76,76,76,.95)}
.field textarea{resize:vertical;min-height:96px}
.form .btn-primary{justify-content:center;cursor:pointer;border:none;width:100%;margin-top:4px}
.form-note{font-family:var(--mono);font-size:11px;color:var(--soft-grey);text-align:center;margin-top:-4px}
.vertex-page header{min-height:auto;padding:150px 0 54px}
.vertex-viewer{padding:0 0 110px}
.pdf-shell{
  background:linear-gradient(160deg,rgba(126,126,126,.96),rgba(62,62,62,.98));
  border:1px solid rgba(255,255,255,.18);border-radius:8px;overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.18);position:relative;z-index:2;
}
.pdf-frame{display:block;width:100%;height:min(78vh,920px);min-height:620px;border:0;background:var(--surface)}
footer{border-top:1px solid rgba(255,255,255,.08);padding:40px 0;position:relative;z-index:2;background:rgba(24,24,24,.95);backdrop-filter:blur(6px);}
.foot{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.foot .mono{color:var(--soft-grey)}
.foot .brand b{font-size:15px}
@media(max-width:900px){
  nav{
    flex-wrap:wrap;
    position:fixed;
    width:100%;
    left:0;
    right:0;
    background:var(--bg);
    z-index:100;
  }
  body{
    padding-top:0;
  }
  header{
    padding-top:180px;
  }
  .nav-links{
    display:flex;
    flex-direction:column;
    position:fixed;
    top:57px;
    left:0;
    right:0;
    background:rgba(12,13,16,.98);
    backdrop-filter:blur(14px);
    border-top:1px solid var(--line);
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease-out;
    gap:0;
    padding:0;
    z-index:99;
    width:100%;
  }
  .nav-links.visible{
    max-height:500px;
  }
  .nav-links a{
    padding:16px 28px;
    border-bottom:1px solid var(--line-soft);
    width:100%;
    text-align:left;
    flex:0 0 auto;
  }
  .nav-item{width:100%}
  .submenu{
    position:static;min-width:0;opacity:1;visibility:visible;transform:none;
    background:rgba(255,255,255,.04);border:0;border-radius:0;box-shadow:none;padding:0;
  }
  .submenu a{padding-left:46px;color:var(--fog)}
  .menu-btn{display:flex!important;align-items:center;gap:8px;margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-card{order:2}
  .serv-grid{grid-template-columns:1fr}
  .proj-grid{grid-template-columns:1fr;gap:36px}
  .contact-grid{grid-template-columns:1fr;padding:32px}
  .card.half,.card.third{grid-column:span 12}
}
@media(max-width:560px){
  .wrap{padding:0 20px}
  section{padding:80px 0}
  .serv{padding:30px}
  .serv h3{max-width:100%}
  .pdf-frame{height:72vh;min-height:480px}
}