:root{
    --ink: #17191A;
    --paper: #EDEAE2;
    --paper-dim: #C9C5B8;
    --signal-red: #D6321F;
    --signal-amber: #F2A900;
    --signal-green: #1F7A4D;
    --steel: #3C4448;
    --steel-light: #545E62;
    --line: rgba(237,234,226,0.16);
  }

  *{ margin:0; padding:0; box-sizing:border-box; }

  html{ scroll-behavior:smooth; }

  body{
    background:var(--ink);
    color:var(--paper);
    font-family:'IBM Plex Sans', sans-serif;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }

  @media (prefers-reduced-motion: reduce){
    *{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
  }

  ::selection{ background:var(--signal-red); color:var(--paper); }

  a{ color:inherit; text-decoration:none; }

  img{ max-width:100%; display:block; }

  .wrap{ max-width:1180px; margin:0 auto; padding:0 32px; }

  h1,h2,h3,h4{
    font-family:'Bebas Neue', sans-serif;
    letter-spacing:0.02em;
    font-weight:400;
    line-height:1.02;
    text-transform:uppercase;
  }

  .eyebrow{
    font-family:'IBM Plex Mono', monospace;
    font-size:12.5px;
    letter-spacing:0.18em;
    text-transform:uppercase;
    color:var(--signal-amber);
    display:flex;
    align-items:center;
    gap:10px;
  }
  .eyebrow::before{
    content:"";
    width:22px; height:2px;
    background:var(--signal-amber);
    display:inline-block;
  }

  :focus-visible{
    outline:2px solid var(--signal-amber);
    outline-offset:3px;
  }

  /* ---------- NAV ---------- */
  header{
    position:fixed; top:0; left:0; right:0; z-index:100;
    background:rgba(23,25,26,0.88);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .nav{
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 32px;
    max-width:1180px; margin:0 auto;
  }
  .logo{
    font-family:'Bebas Neue', sans-serif;
    font-size:28px;
    letter-spacing:0.06em;
    display:flex; align-items:center; gap:12px;
  }
  .logo-img{ height:40px; width:auto; display:block; }
  .logo .dot{ color:var(--signal-red); }
  .logo small{
    font-family:'IBM Plex Mono', monospace;
    font-size:10px;
    letter-spacing:0.1em;
    color:var(--paper-dim);
    text-transform:uppercase;
  }
  .nav-links{ display:flex; gap:36px; align-items:center; }
  .nav-links a{
    font-family:'IBM Plex Mono', monospace;
    font-size:12.5px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:var(--paper-dim);
    position:relative;
    padding:6px 0;
    transition:color .2s;
  }
  .nav-links a:hover, .nav-links a.active{ color:var(--paper); }
  .nav-links a::after{
    content:""; position:absolute; left:0; bottom:0; height:2px; width:0;
    background:var(--signal-red); transition:width .25s;
  }
  .nav-links a:hover::after, .nav-links a.active::after{ width:100%; }

  .nav-cta{
    font-family:'IBM Plex Mono', monospace;
    font-size:12px; letter-spacing:0.06em;
    border:1px solid var(--paper-dim);
    padding:9px 16px;
    text-transform:uppercase;
    transition:all .2s;
  }
  .nav-cta:hover{ background:var(--signal-red); border-color:var(--signal-red); }

  .burger{ display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:8px; }
  .burger span{ width:24px; height:2px; background:var(--paper); display:block; }

  /* ---------- HERO ---------- */
  .hero{
    position:relative;
    padding:168px 32px 100px;
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .hero-bg{ position:absolute; inset:0; z-index:0; }
  .hero-bg img{
    width:100%; height:100%; object-fit:cover; object-position:center 25%;
    filter:grayscale(30%) contrast(1.1) brightness(0.8);
  }
  .hero-overlay{
    position:absolute; inset:0; z-index:0; pointer-events:none;
    background:
      linear-gradient(100deg, rgba(23,25,26,0.97) 0%, rgba(23,25,26,0.9) 40%, rgba(23,25,26,0.62) 68%, rgba(23,25,26,0.32) 100%),
      radial-gradient(ellipse 900px 500px at 85% -10%, rgba(214,50,31,0.22), transparent 60%);
  }
  .hero-grid{
    position:relative; z-index:1;
    max-width:1180px; margin:0 auto;
    display:grid; grid-template-columns:1.3fr 0.9fr; gap:64px; align-items:end;
  }
  .hero h1{
    font-size:clamp(52px, 8vw, 104px);
    margin:22px 0 26px;
  }
  .hero h1 .accent{ color:var(--signal-red); }
  .hero p.lead{
    font-size:18px; color:var(--paper-dim); max-width:520px; margin-bottom:34px;
  }
  .hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }
  .btn{
    font-family:'IBM Plex Mono', monospace;
    font-size:13px; letter-spacing:0.05em; text-transform:uppercase;
    padding:15px 26px;
    display:inline-flex; align-items:center; gap:10px;
    transition:all .2s;
    border:1px solid transparent;
  }
  .btn-primary{ background:var(--signal-red); color:var(--paper); }
  .btn-primary:hover{ background:#B8250F; }
  .btn-ghost{ border-color:var(--paper-dim); color:var(--paper); }
  .btn-ghost:hover{ border-color:var(--paper); background:rgba(237,234,226,0.06); }

  /* data plate */
  .plate{
    border:1px solid var(--line);
    background:rgba(237,234,226,0.03);
    padding:26px 26px 22px;
    font-family:'IBM Plex Mono', monospace;
    position:relative;
  }
  .plate::before{
    content:"";
    position:absolute; top:10px; right:10px;
    width:7px; height:7px; border-radius:50%;
    background:var(--signal-amber);
    box-shadow:-18px 0 0 var(--signal-green), -36px 0 0 var(--signal-red);
    opacity:.85;
  }
  .plate-title{
    font-size:11px; letter-spacing:0.14em; text-transform:uppercase; color:var(--paper-dim);
    margin-bottom:18px; border-bottom:1px dashed var(--line); padding-bottom:14px;
  }
  .plate-row{ display:flex; justify-content:space-between; font-size:13px; padding:8px 0; border-bottom:1px solid rgba(237,234,226,0.06); gap:16px; }
  .plate-row span:first-child{ color:var(--paper-dim); }
  .plate-row span:last-child{ color:var(--paper); font-weight:600; text-align:right; }
  .plate-row:last-child{ border-bottom:0; }

  /* ---------- SECTION SHELL ---------- */
  section{ padding:110px 0; border-bottom:1px solid var(--line); position:relative; }
  .section-head{ display:flex; justify-content:space-between; align-items:flex-end; gap:40px; margin-bottom:56px; flex-wrap:wrap; }
  .section-head h2{ font-size:clamp(36px,5vw,58px); margin-top:14px; max-width:640px; }
  .section-head p{ color:var(--paper-dim); max-width:340px; font-size:15px; }

  .reveal{ opacity:0; transform:translateY(24px); transition:opacity .7s ease, transform .7s ease; }
  .reveal.in{ opacity:1; transform:translateY(0); }

  /* ---------- SOBRE (stats) ---------- */
  .about-grid{ display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:start; }
  .about-copy p{ color:var(--paper-dim); margin-bottom:18px; font-size:15.5px; max-width:520px; }
  .about-copy strong{ color:var(--paper); }

  .about-photo{ border:1px solid var(--line); overflow:hidden; margin-bottom:24px; }
  .about-photo img{ width:100%; display:block; filter:grayscale(12%) contrast(1.06); }

  .stat-list{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--line); border:1px solid var(--line); }
  .stat{ background:var(--ink); padding:28px 24px; }
  .stat .num{ font-family:'Bebas Neue',sans-serif; font-size:46px; color:var(--signal-amber); line-height:1; }
  .stat .label{ font-family:'IBM Plex Mono', monospace; font-size:11.5px; color:var(--paper-dim); text-transform:uppercase; letter-spacing:0.06em; margin-top:10px; }

  /* ---------- SERVICIOS: tag cards ---------- */
  .tags{ display:grid; grid-template-columns:repeat(4,1fr); gap:26px; }
  .tag{
    position:relative;
    background:var(--steel);
    border:1px solid rgba(237,234,226,0.08);
    display:flex; flex-direction:column;
    overflow:hidden;
    transition:transform .25s, border-color .25s;
  }
  .tag:hover{ transform:translateY(-6px); border-color:var(--tag-color, var(--signal-amber)); }
  .tag-media{ position:relative; aspect-ratio:4/3; overflow:hidden; }
  .tag-media::before{
    content:""; position:absolute; top:0; left:0; right:0; height:4px;
    background:var(--tag-color, var(--signal-amber)); z-index:2;
  }
  .tag-media::after{
    content:""; position:absolute; inset:0;
    background:linear-gradient(180deg, transparent 55%, rgba(23,25,26,0.65));
  }
  .tag-media img{
    width:100%; height:100%; object-fit:cover; display:block;
    filter:grayscale(15%) contrast(1.08); transition:transform .5s;
  }
  .tag:hover .tag-media img{ transform:scale(1.07); }
  .tag-body{ padding:20px 22px 24px; }
  .tag .code{
    font-family:'IBM Plex Mono', monospace;
    font-size:11px; color:var(--tag-color, var(--signal-amber));
    letter-spacing:0.1em; margin-bottom:14px;
  }
  .tag h3{ font-size:26px; margin-bottom:10px; letter-spacing:0.01em; }
  .tag p{ font-size:13.5px; color:var(--paper-dim); }

  /* ---------- CATALOGO (accordion-ish list) ---------- */
  .catalog{ display:grid; grid-template-columns:repeat(2,1fr); gap:0; border-top:1px solid var(--line); }
  .cat-item{ border-bottom:1px solid var(--line); padding:26px 0; }
  .cat-item:nth-child(odd){ padding-right:40px; border-right:1px solid var(--line); }
  .cat-item:nth-child(even){ padding-left:40px; }
  .cat-item h4{
    font-family:'IBM Plex Mono', monospace;
    text-transform:uppercase; font-size:13px; letter-spacing:0.08em;
    color:var(--signal-amber); margin-bottom:12px; font-weight:600;
  }
  .cat-item ul{ list-style:none; display:flex; flex-wrap:wrap; gap:8px 10px; }
  .cat-item li{
    font-size:13px; color:var(--paper-dim);
    padding:5px 0;
  }
  .cat-item li::after{ content:"·"; margin-left:10px; color:var(--steel-light); }
  .cat-item li:last-child::after{ display:none; }

  /* ---------- GARANTIA ---------- */
  .warranty{ display:grid; grid-template-columns:0.9fr 1.1fr; gap:64px; align-items:center; }
  .seal{
    width:220px; height:220px; border-radius:50%;
    border:2px solid var(--signal-green);
    display:flex; align-items:center; justify-content:center;
    position:relative; margin:0 auto;
    flex-shrink:0;
  }
  .seal::before{
    content:""; position:absolute; inset:10px; border:1px dashed rgba(31,122,77,0.5); border-radius:50%;
  }
  .seal-text{
    font-family:'Bebas Neue', sans-serif; font-size:22px; text-align:center; color:var(--signal-green);
    line-height:1.15; letter-spacing:0.03em;
  }
  .seal-text small{ display:block; font-family:'IBM Plex Mono',monospace; font-size:10px; color:var(--paper-dim); letter-spacing:0.1em; margin-top:6px; text-transform:uppercase; }

  .checklist{ list-style:none; }
  .checklist li{
    display:flex; gap:16px; padding:16px 0; border-bottom:1px solid var(--line);
    font-size:14.5px; color:var(--paper-dim);
  }
  .checklist li b{ color:var(--paper); font-weight:600; }
  .checklist .mark{
    font-family:'IBM Plex Mono', monospace; color:var(--signal-green); flex-shrink:0; margin-top:1px;
  }

  /* ---------- CLIENTES ---------- */
  .clients-marquee{
    overflow:hidden; border-top:1px solid var(--line); border-bottom:1px solid var(--line);
    padding:20px 0; margin-bottom:50px;
  }
  .marquee-track{
    display:flex; gap:56px; width:max-content;
    animation:scroll 38s linear infinite;
    font-family:'IBM Plex Mono', monospace; font-size:13px; letter-spacing:0.04em;
    color:var(--paper-dim); text-transform:uppercase;
  }
  @keyframes scroll{ from{ transform:translateX(0);} to{ transform:translateX(-50%);} }
  .marquee-track span{ white-space:nowrap; }
  .marquee-track span::after{ content:"—"; margin-left:56px; color:var(--steel-light); }

  .client-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
  .client-cell{ background:var(--ink); padding:20px 22px; font-size:13.5px; color:var(--paper-dim); transition:color .2s, background .2s; }
  .client-cell:hover{ color:var(--paper); background:rgba(237,234,226,0.03); }

  /* ---------- CONTACTO ---------- */
  .contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:64px; }
  .contact-block h4{
    font-family:'IBM Plex Mono', monospace; font-size:12px; text-transform:uppercase;
    letter-spacing:0.1em; color:var(--signal-amber); margin-bottom:14px;
  }
  .contact-block .big{ font-size:22px; margin-bottom:6px; }
  .contact-block a.big{ display:block; transition:color .2s; }
  .contact-block a.big:hover{ color:var(--signal-red); }
  .contact-block p{ color:var(--paper-dim); font-size:14.5px; }

  form{ display:flex; flex-direction:column; gap:16px; }
  form label{
    font-family:'IBM Plex Mono', monospace; font-size:11px; text-transform:uppercase;
    letter-spacing:0.08em; color:var(--paper-dim); margin-bottom:8px; display:block;
  }
  form input, form textarea{
    width:100%; background:transparent; border:none; border-bottom:1px solid var(--line);
    color:var(--paper); font-family:'IBM Plex Sans', sans-serif; font-size:15px;
    padding:10px 2px; transition:border-color .2s;
  }
  form input:focus, form textarea:focus{ border-color:var(--signal-amber); outline:none; }
  form textarea{ resize:vertical; min-height:80px; }
  .form-submit{
    align-self:flex-start; margin-top:8px;
    background:var(--signal-red); color:var(--paper); border:none; cursor:pointer;
    font-family:'IBM Plex Mono', monospace; font-size:13px; letter-spacing:0.05em;
    text-transform:uppercase; padding:15px 28px; transition:background .2s;
  }
  .form-submit:hover{ background:#B8250F; }
  .form-note{ font-size:12px; color:var(--paper-dim); margin-top:4px; }

  /* ---------- FOOTER ---------- */
  footer{ padding:48px 0; }
  .foot-grid{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:20px; }
  .foot-brand{ display:flex; align-items:center; gap:14px; }
  .foot-logo{ height:26px; width:auto; opacity:0.85; }
  .foot-grid p{ font-size:12.5px; color:var(--paper-dim); font-family:'IBM Plex Mono', monospace; }
  .foot-links{ display:flex; gap:24px; }
  .foot-links a{ font-size:12.5px; color:var(--paper-dim); font-family:'IBM Plex Mono', monospace; }
  .foot-links a:hover{ color:var(--paper); }

  /* ---------- RESPONSIVE ---------- */
  @media (max-width: 980px){
    .nav-links{ display:none; }
    .burger{ display:flex; }
    .hero-grid{ grid-template-columns:1fr; }
    .about-grid, .warranty, .contact-grid{ grid-template-columns:1fr; }
    .tags{ grid-template-columns:repeat(2,1fr); }
    .catalog{ grid-template-columns:1fr; }
    .cat-item:nth-child(odd){ border-right:none; padding-right:0; }
    .cat-item:nth-child(even){ padding-left:0; }
    .client-grid{ grid-template-columns:repeat(2,1fr); }
  }
  @media (max-width: 640px){
    .wrap, .nav, .hero, section{ padding-left:20px; padding-right:20px; }
    .hero{ padding-top:140px; }
    .tags{ grid-template-columns:1fr; }
    .stat-list{ grid-template-columns:1fr; }
    .client-grid{ grid-template-columns:1fr; }
    .section-head{ flex-direction:column; align-items:flex-start; }
  }

  /* mobile menu panel */
  .mobile-menu{
    position:fixed; inset:0; z-index:200; background:var(--ink);
    display:flex; flex-direction:column; padding:28px;
    transform:translateX(100%); transition:transform .3s ease;
  }
  .mobile-menu.open{ transform:translateX(0); }
  .mobile-menu-head{ display:flex; align-items:center; justify-content:space-between; }
  .mm-logo{ height:34px; width:auto; }
  .mobile-menu .close-btn{ background:none; border:none; color:var(--paper); font-size:28px; cursor:pointer; }
  .mobile-menu nav{ display:flex; flex-direction:column; gap:28px; margin-top:60px; }
  .mobile-menu nav a{ font-family:'Bebas Neue', sans-serif; font-size:36px; text-transform:uppercase; }