:root{
    --navy-void:#070e1c;
    --navy-panel:#0d1b32;
    --navy-panel-2:#122544;
    --blue-primary:#1c6fe0;
    --blue-deep:#0a3f8c;
    --white-line:#eef4fc;
    --signal:#4fd1ff;
    --ink-soft:#a9b8d1;
    --ink-mute:#748099;
    --border:rgba(238,244,252,0.10);

    --font-display:'Space Grotesk', sans-serif;
    --font-body:'Inter', sans-serif;
    --font-mono:'JetBrains Mono', monospace;
  }

  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--navy-void);
    color:var(--white-line);
    font-family:var(--font-body);
    line-height:1.6;
    overflow-x:hidden;
  }
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
  }

  a{color:inherit; text-decoration:none;}
  ul{list-style:none;}
  img{max-width:100%; display:block;}

  .wrap{
    max-width:1180px;
    margin:0 auto;
    padding:0 28px;
  }

  .eyebrow{
    font-family:var(--font-mono);
    font-size:12.5px;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--signal);
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:18px;
  }
  .eyebrow::before{
    content:'';
    width:7px; height:7px;
    border-radius:50%;
    background:var(--signal);
    box-shadow:0 0 10px 2px rgba(79,209,255,0.6);
    flex-shrink:0;
  }

  h1,h2,h3{
    font-family:var(--font-display);
    font-weight:600;
    letter-spacing:-0.01em;
    color:var(--white-line);
  }

  /* ---------- Background circuit texture ---------- */
  .circuit-bg{
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    opacity:0.35;
  }

  /* ---------- Header ---------- */
  header{
    position:sticky; top:0; z-index:50;
    backdrop-filter:blur(14px);
    background:rgba(7,14,28,0.78);
    border-bottom:1px solid var(--border);
  }
  .nav{
    display:flex; align-items:center; justify-content:space-between;
    padding:16px 28px;
    max-width:1180px; margin:0 auto;
  }
  .brand{display:flex; align-items:center; gap:12px;}
  .brand img{width:36px; height:36px; border-radius:9px;}
  .brand span{font-family:var(--font-display); font-weight:700; font-size:19px; letter-spacing:-0.01em;}
  .nav-links{display:flex; align-items:center; gap:34px;}
  .nav-links a{font-size:14.5px; color:var(--ink-soft); transition:color .2s;}
  .nav-links a:hover{color:var(--white-line);}
  .nav-cta{
    font-family:var(--font-body);
    font-weight:600; font-size:14px;
    color:var(--navy-void) !important;
    background:var(--signal);
    padding:10px 20px;
    border-radius:8px;
    transition:transform .2s, box-shadow .2s;
  }
  .nav-cta:hover{transform:translateY(-1px); box-shadow:0 6px 20px rgba(79,209,255,0.25);}
  .nav-toggle{display:none; background:none; border:none; color:var(--white-line); font-size:24px; cursor:pointer;}

  @media (max-width:820px){
    .nav-links{
      position:fixed; top:69px; left:0; right:0;
      background:var(--navy-panel);
      flex-direction:column; align-items:flex-start;
      gap:0; padding:8px 0;
      border-bottom:1px solid var(--border);
      transform:translateY(-130%);
      transition:transform .25s ease;
    }
    .nav-links.open{transform:translateY(0);}
    .nav-links a{width:100%; padding:14px 28px; border-bottom:1px solid var(--border);}
    .nav-links .nav-cta{margin:14px 28px; text-align:center;}
    .nav-toggle{display:block;}
  }

  /* ---------- Spine (signature element) ---------- */
  .spine-track{
    position:absolute;
    left:34px; top:0; bottom:0;
    width:2px;
    z-index:1;
  }
  .spine-line{
    position:absolute; inset:0;
    background:linear-gradient(to bottom, transparent, var(--border) 4%, var(--border) 96%, transparent);
  }
  .spine-pulse{
    position:absolute;
    left:-5px; width:12px; height:12px;
    border-radius:50%;
    background:var(--signal);
    box-shadow:0 0 16px 4px rgba(79,209,255,0.55);
    animation:travel 9s linear infinite;
  }
  @keyframes travel{
    0%{ top:0%; opacity:0;}
    5%{opacity:1;}
    95%{opacity:1;}
    100%{ top:100%; opacity:0;}
  }
  .node{
    position:absolute; left:-6px;
    width:14px; height:14px;
    border-radius:50%;
    background:var(--navy-void);
    border:2px solid var(--blue-primary);
    transition:border-color .3s, box-shadow .3s;
  }
  .node.lit{
    border-color:var(--signal);
    box-shadow:0 0 12px 2px rgba(79,209,255,0.45);
  }
  @media (max-width:900px){ .spine-track{display:none;} }

  section{position:relative; z-index:2;}
  .spine-wrapper{position:relative;}

  /* ---------- Hero ---------- */
  .hero{
    padding:120px 28px 100px;
    position:relative;
  }
  .hero-inner{max-width:1180px; margin:0 auto; padding-left:56px;}
  @media (max-width:900px){ .hero-inner{padding-left:0;} }

  .hero h1{
    font-size:clamp(34px, 5vw, 58px);
    line-height:1.08;
    max-width:820px;
    margin-bottom:26px;
  }
  .hero h1 em{
    font-style:normal;
    color:var(--signal);
  }
  .hero p.lead{
    font-size:18px;
    color:var(--ink-soft);
    max-width:600px;
    margin-bottom:40px;
  }
  .cta-row{display:flex; gap:16px; flex-wrap:wrap; margin-bottom:56px;}
  .btn{
    display:inline-flex; align-items:center; gap:8px;
    font-family:var(--font-body); font-weight:600; font-size:15px;
    padding:14px 26px;
    border-radius:9px;
    transition:transform .2s, box-shadow .2s, background .2s;
    cursor:pointer;
  }
  .btn-primary{
    background:linear-gradient(135deg, var(--blue-primary), var(--blue-deep));
    color:var(--white-line);
    box-shadow:0 8px 30px rgba(28,111,224,0.35);
  }
  .btn-primary:hover{transform:translateY(-2px); box-shadow:0 12px 34px rgba(28,111,224,0.5);}
  .btn-ghost{
    border:1px solid var(--border);
    color:var(--white-line);
  }
  .btn-ghost:hover{background:rgba(238,244,252,0.06); border-color:rgba(238,244,252,0.25);}

  .stack-row{display:flex; align-items:center; gap:16px; flex-wrap:wrap;}
  .stack-label{font-family:var(--font-mono); font-size:12px; color:var(--ink-mute); text-transform:uppercase; letter-spacing:0.08em;}
  .chip{
    font-family:var(--font-mono); font-size:12.5px;
    color:var(--ink-soft);
    border:1px solid var(--border);
    padding:6px 12px; border-radius:6px;
  }

  /* ---------- Section shell ---------- */
  .section{padding:88px 28px;}
  .section-inner{max-width:1180px; margin:0 auto; padding-left:56px; position:relative;}
  @media (max-width:900px){ .section-inner{padding-left:0;} }
  .section h2{font-size:clamp(26px, 3.4vw, 38px); margin-bottom:18px; max-width:640px;}
  .section .lead{color:var(--ink-soft); font-size:16.5px; max-width:600px; margin-bottom:50px;}

  .reveal{transition:opacity .6s ease, transform .6s ease;}
  .reveal.pre{opacity:0; transform:translateY(18px);}

  /* ---------- Problema ---------- */
  .pain-list{display:flex; flex-direction:column; gap:0;}
  .pain-item{
    display:grid; grid-template-columns:120px 1fr;
    gap:24px;
    padding:30px 0;
    border-top:1px solid var(--border);
  }
  .pain-item:last-child{border-bottom:1px solid var(--border);}
  .pain-tag{font-family:var(--font-mono); font-size:12.5px; color:var(--blue-primary); padding-top:4px;}
  .pain-item h3{font-size:19px; margin-bottom:8px; font-weight:600;}
  .pain-item p{color:var(--ink-soft); font-size:15px; max-width:520px;}
  @media (max-width:640px){ .pain-item{grid-template-columns:1fr; gap:8px;} }

  /* ---------- Servicios ---------- */
  .plans{
    display:grid; grid-template-columns:repeat(3, 1fr); gap:22px;
  }
  @media (max-width:980px){ .plans{grid-template-columns:1fr; max-width:440px;} }
  .plan{
    background:var(--navy-panel);
    border:1px solid var(--border);
    border-radius:16px;
    padding:32px 28px;
    display:flex; flex-direction:column;
    transition:transform .25s, border-color .25s;
  }
  .plan:hover{transform:translateY(-4px); border-color:rgba(79,209,255,0.3);}
  .plan.featured{
    background:linear-gradient(180deg, var(--navy-panel-2), var(--navy-panel));
    border-color:rgba(79,209,255,0.35);
    position:relative;
  }
  .plan-badge{
    position:absolute; top:-13px; left:28px;
    font-family:var(--font-mono); font-size:11px; letter-spacing:0.06em;
    background:var(--signal); color:var(--navy-void);
    padding:4px 10px; border-radius:5px; font-weight:600;
  }
  .plan h3{font-size:21px; margin-bottom:6px;}
  .plan .plan-for{font-size:13.5px; color:var(--ink-mute); margin-bottom:22px;}
  .plan ul{display:flex; flex-direction:column; gap:13px; margin-bottom:28px; flex-grow:1;}
  .plan li{
    font-size:14.5px; color:var(--ink-soft);
    padding-left:22px; position:relative;
  }
  .plan li::before{
    content:'';
    position:absolute; left:0; top:7px;
    width:8px; height:8px;
    border-radius:2px;
    background:var(--blue-primary);
    transform:rotate(45deg);
  }
  .plan .btn{width:100%; justify-content:center;}

  /* ---------- Proyectos ---------- */
  .projects{
    display:grid; grid-template-columns:repeat(3,1fr); gap:22px;
  }
  @media (max-width:980px){ .projects{grid-template-columns:1fr; max-width:440px;} }
  .project{
    background:var(--navy-panel);
    border:1px solid var(--border);
    border-radius:16px;
    padding:24px 24px 28px;
    display:flex; flex-direction:column;
    transition:transform .25s, border-color .25s;
  }
  .project:hover{transform:translateY(-4px); border-color:rgba(79,209,255,0.35);}
  .project-shot{
    height:130px;
    border-radius:10px;
    background:linear-gradient(135deg, var(--navy-panel-2), var(--blue-deep));
    border:1px solid var(--border);
    position:relative; overflow:hidden;
    margin-bottom:22px;
  }
  .project-shot::before{
    content:'';
    position:absolute; top:0; left:0; right:0; height:24px;
    background:rgba(7,14,28,0.55);
    border-bottom:1px solid var(--border);
  }
  .project-shot::after{
    content:'● ● ●';
    position:absolute; top:6px; left:12px;
    font-size:7px; letter-spacing:3px; color:var(--ink-mute);
  }
  .project-tag{
    font-family:var(--font-mono); font-size:11.5px;
    color:var(--signal); letter-spacing:0.08em; text-transform:uppercase;
    margin-bottom:12px; display:flex; align-items:center; gap:8px;
  }
  .project-tag::before{
    content:'';
    width:7px; height:7px; border-radius:50%;
    background:var(--blue-primary);
    box-shadow:0 0 8px rgba(79,209,255,0.5);
    flex-shrink:0;
  }
  .project h3{font-size:19px; margin-bottom:10px;}
  .project p{color:var(--ink-soft); font-size:14.5px; margin-bottom:20px;}
  .project-result{
    margin-top:auto;
    font-family:var(--font-mono); font-size:13px;
    color:var(--ink-soft);
    border-top:1px solid var(--border);
    padding-top:16px;
  }
  .project-result b{color:var(--signal); font-weight:500;}

  /* ---------- Por qué ---------- */
  .why-grid{display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:start;}
  @media (max-width:900px){ .why-grid{grid-template-columns:1fr; gap:36px;} }
  .why-grid p{color:var(--ink-soft); font-size:16px; margin-bottom:18px; max-width:520px;}
  .fact-list{display:flex; flex-direction:column; gap:0;}
  .fact{
    font-family:var(--font-mono); font-size:13.5px;
    color:var(--ink-soft);
    padding:18px 0 18px 26px;
    border-top:1px solid var(--border);
    position:relative;
  }
  .fact:last-child{border-bottom:1px solid var(--border);}
  .fact::before{
    content:'▸'; position:absolute; left:0; color:var(--signal);
  }

  /* ---------- Proceso ---------- */
  .steps{
    display:grid; grid-template-columns:repeat(4,1fr); gap:20px;
  }
  @media (max-width:900px){ .steps{grid-template-columns:1fr 1fr; gap:24px;} }
  @media (max-width:560px){ .steps{grid-template-columns:1fr;} }
  .step{padding-top:18px; border-top:2px solid var(--blue-primary);}
  .step-num{font-family:var(--font-mono); font-size:13px; color:var(--signal); margin-bottom:12px; display:block;}
  .step h3{font-size:17px; margin-bottom:8px;}
  .step p{font-size:14px; color:var(--ink-soft);}

  /* ---------- CTA final ---------- */
  .cta-final{
    padding:100px 28px;
    text-align:center;
    background:radial-gradient(ellipse at 50% 0%, rgba(28,111,224,0.16), transparent 60%);
    border-top:1px solid var(--border);
    border-bottom:1px solid var(--border);
  }
  .cta-final h2{font-size:clamp(26px,4vw,40px); max-width:680px; margin:0 auto 18px;}
  .cta-final p{color:var(--ink-soft); font-size:16px; max-width:520px; margin:0 auto 36px;}
  .cta-final .cta-row{justify-content:center;}

  /* ---------- Footer ---------- */
  footer{padding:44px 28px 36px;}
  .footer-inner{
    max-width:1180px; margin:0 auto;
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:18px;
    font-size:13.5px; color:var(--ink-mute);
  }
  .footer-brand{display:flex; align-items:center; gap:10px;}
  .footer-brand img{width:24px; height:24px; border-radius:6px;}
  .footer-note{font-family:var(--font-mono); font-size:12px;}