:root{
  --ground:#EFEEE9; --surface:#FFFFFF; --surface-2:#F7F6F2; --surface-3:#E7E5DE;
  --ink:#15181B; --ink-2:#454B4F; --ink-3:#63696E;
  --line:#D9D7D0; --line-2:#B9B6AD;
  --accent:#2E5E3F; --on-accent:#FFFFFF; --accent-soft:#E2EBE4;
  --ochre:#8A6019; --ochre-soft:#F2E8D4;
  --stone:#C9C3B4; --soil:#8A7A63;
  --strip-bg:#15181B; --strip-ink:#EFEEE9;
  --logo-filter:none;
  --shadow:0 1px 2px rgba(21,24,27,.05), 0 8px 24px -12px rgba(21,24,27,.18);
  --maxw:1180px;
  --r:3px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ground:#121417; --surface:#1A1D21; --surface-2:#202428; --surface-3:#282D32;
    --ink:#E9EAE6; --ink-2:#B0B6B9; --ink-3:#868C90;
    --line:#2C3136; --line-2:#3E454B;
    --accent:#7CB891; --on-accent:#0E1712; --accent-soft:#1D2A22;
    --ochre:#D9A24E; --ochre-soft:#2A2317;
    --stone:#6C6659; --soil:#4A4237;
    --strip-bg:#23282D; --strip-ink:#E9EAE6;
    --logo-filter:invert(1);
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 24px -12px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --ground:#121417; --surface:#1A1D21; --surface-2:#202428; --surface-3:#282D32;
  --ink:#E9EAE6; --ink-2:#B0B6B9; --ink-3:#868C90;
  --line:#2C3136; --line-2:#3E454B;
  --accent:#7CB891; --on-accent:#0E1712; --accent-soft:#1D2A22;
  --ochre:#D9A24E; --ochre-soft:#2A2317;
  --stone:#6C6659; --soil:#4A4237;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 24px -12px rgba(0,0,0,.6);
}

*{box-sizing:border-box}
body{
  margin:0; background:var(--ground); color:var(--ink);
  font-family:"Barlow","Helvetica Neue",Arial,sans-serif;
  font-size:17px; line-height:1.62; -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:inherit}
h1,h2,h3,h4{
  font-family:"Barlow Condensed","Arial Narrow",Arial,sans-serif;
  font-weight:700; line-height:1.02; text-wrap:balance; margin:0;
  letter-spacing:.005em;
}
h1{font-size:clamp(2.5rem,6.4vw,4.7rem); text-transform:uppercase}
h2{font-size:clamp(2rem,4.4vw,3.1rem); text-transform:uppercase}
h3{font-size:1.5rem; text-transform:uppercase}
p{margin:0}

.wrap{max-width:var(--maxw); margin:0 auto; padding:0 22px}
.stack{display:flex; flex-direction:column}
.lede{font-size:1.16rem; color:var(--ink-2); max-width:62ch}
.mono{font-family:"IBM Plex Mono",ui-monospace,Menlo,monospace}
.num{font-variant-numeric:tabular-nums}

.eyebrow{
  font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.7rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--ink-3); display:flex; align-items:center; gap:10px;
}
.eyebrow::before{content:""; width:26px; height:1px; background:var(--ochre); flex:none}

.section{padding:82px 0; border-top:1px solid var(--line)}
.section--flat{border-top:none}
.section__head{display:flex; flex-direction:column; gap:14px; margin-bottom:44px; max-width:70ch}

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  font-family:"Barlow Condensed",Arial,sans-serif; font-weight:700;
  text-transform:uppercase; letter-spacing:.05em; font-size:1.02rem;
  padding:13px 22px; border-radius:var(--r); text-decoration:none;
  border:1px solid transparent; cursor:pointer; transition:transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--accent); color:var(--on-accent)}
.btn--primary:hover{background:color-mix(in srgb, var(--accent) 86%, var(--ink))}
.btn--ghost{border-color:var(--line-2); color:var(--ink); background:transparent}
.btn--ghost:hover{border-color:var(--ink); background:var(--surface)}
.btn--sm{padding:9px 15px; font-size:.92rem}
:where(a,button,input,select,textarea):focus-visible{outline:2px solid var(--ochre); outline-offset:3px}

/* ---------- header ---------- */
.hdr{
  position:sticky; top:0; z-index:50; background:color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter:blur(10px); border-bottom:1px solid var(--line);
}
.hdr__in{display:flex; align-items:center; gap:20px; height:74px}
.brand{display:flex; align-items:center; gap:11px; text-decoration:none; margin-right:auto}
.brand__logo{height:46px; width:auto; display:block; filter:var(--logo-filter)}
.brand__tag{
  font-family:"IBM Plex Mono",monospace; font-size:.62rem; letter-spacing:.14em;
  text-transform:uppercase; color:var(--ink-3); padding-left:11px; border-left:1px solid var(--line);
}
@media (max-width:400px){.brand__tag{display:none}}
.ftr__logo{width:124px; height:auto; display:block; filter:var(--logo-filter); margin-bottom:16px}
.nav{display:flex; gap:26px; align-items:center}
.nav a{
  text-decoration:none; font-size:.87rem; font-weight:500; color:var(--ink-2);
  letter-spacing:.01em; padding:4px 0; border-bottom:1px solid transparent;
}
.nav a:hover{color:var(--ink); border-bottom-color:var(--ochre)}
.hdr__cta{display:flex; gap:9px; align-items:center}
.hdr__cta .btn{white-space:nowrap}
.cta-lg{display:inline} .cta-sm{display:none}
@media (max-width:560px){.cta-lg{display:none} .cta-sm{display:inline}}
.navtoggle{display:none; background:none; border:1px solid var(--line-2); border-radius:var(--r); padding:7px 10px; color:var(--ink); cursor:pointer}
@media (max-width:940px){
  .nav{
    position:absolute; top:74px; left:0; right:0; background:var(--surface);
    border-bottom:1px solid var(--line); flex-direction:column; align-items:stretch;
    gap:0; padding:6px 22px 14px;
  }
  .nav[hidden]{display:none}
  .nav a{padding:11px 0; border-bottom:1px solid var(--line)}
  .navtoggle{display:block; order:3}
  .hdr__cta .btn--ghost{display:none}
}

/* ---------- hero ---------- */
.hero{padding:56px 0 0; overflow:hidden}
.hero__grid{display:grid; grid-template-columns:1.05fr .95fr; gap:46px; align-items:center}
@media (max-width:940px){.hero__grid{grid-template-columns:1fr; gap:32px}}
.hero h1{margin:16px 0 18px}
.hero h1 em{font-style:normal; color:var(--accent)}
.hero__sub{font-size:1.2rem; color:var(--ink-2); max-width:52ch}
.hero__cta{display:flex; gap:12px; flex-wrap:wrap; margin-top:26px}
.hero__specs{
  display:grid; grid-template-columns:repeat(4,1fr); gap:0; margin-top:44px;
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
}
.spec{padding:16px 18px 16px 0; border-right:1px solid var(--line)}
.spec:last-child{border-right:none}
.spec__k{font-family:"IBM Plex Mono",monospace; font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; color:var(--ochre)}
.spec__v{font-family:"Barlow Condensed",Arial,sans-serif; font-weight:700; font-size:1.24rem; text-transform:uppercase; margin-top:4px}
.spec__d{font-size:.83rem; color:var(--ink-3); line-height:1.4}
@media (max-width:720px){
  .hero__specs{grid-template-columns:repeat(2,1fr)}
  .spec:nth-child(2){border-right:none}
  .spec:nth-child(-n+2){border-bottom:1px solid var(--line)}
}

/* cross-section drawing */
.section-fig{background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:18px; box-shadow:var(--shadow)}
.section-fig figcaption{
  font-family:"IBM Plex Mono",monospace; font-size:.68rem; letter-spacing:.1em;
  text-transform:uppercase; color:var(--ink-3); margin-top:12px; display:flex; justify-content:space-between; gap:10px;
}
.fig-img{background:#F2F2F2; border-radius:2px; overflow:hidden; line-height:0}
.fig-img img{width:100%; height:auto; display:block}
.figwide{
  border:1px solid var(--line); border-radius:3px; background:#F2F2F2;
  overflow-x:auto; -webkit-overflow-scrolling:touch; margin-bottom:16px;
}
.figwide img{display:block; width:100%; min-width:720px; height:auto}
.figwide + .fignote{
  font-family:"IBM Plex Mono",monospace; font-size:.68rem; letter-spacing:.08em;
  text-transform:uppercase; color:var(--ink-3); margin-bottom:34px;
}
.dim{font-family:"IBM Plex Mono",monospace; font-size:10px; fill:var(--ink-3)}
.lbl{font-family:"IBM Plex Mono",monospace; font-size:11px; fill:var(--ink-2)}
.lbl--em{fill:var(--accent); font-weight:500}

/* ---------- problem strip ---------- */
.strip{background:var(--strip-bg); color:var(--strip-ink)}
.strip__grid{display:grid; grid-template-columns:repeat(3,1fr); gap:30px; padding:52px 0}
@media (max-width:820px){.strip__grid{grid-template-columns:1fr; gap:22px}}
.strip h3{font-size:1.3rem; margin-bottom:6px}
.strip p:not(.eyebrow){opacity:.78; font-size:.98rem}
.strip .eyebrow{color:#9AA0A3}

/* ---------- products ---------- */
.cards{display:grid; grid-template-columns:repeat(2,1fr); gap:20px}
@media (max-width:820px){.cards{grid-template-columns:1fr}}
.card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r);
  display:flex; flex-direction:column; overflow:hidden; box-shadow:var(--shadow);
}
.card__top{padding:22px 22px 0; display:flex; align-items:flex-start; justify-content:space-between; gap:14px}
.tag{
  font-family:"IBM Plex Mono",monospace; font-size:.63rem; letter-spacing:.12em; text-transform:uppercase;
  padding:5px 9px; border-radius:2px; background:var(--accent-soft); color:var(--accent); white-space:nowrap;
}
.tag--ochre{background:var(--ochre-soft); color:var(--ochre)}
.card h3{margin-bottom:6px}
.card__use{color:var(--ink-2); font-size:.97rem; padding:0 22px; margin-top:10px}
.card__art{margin:20px 0 0; background:var(--surface-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line)}
.specs{width:100%; border-collapse:collapse; font-size:.9rem}
.specs th,.specs td{text-align:left; padding:9px 22px; border-bottom:1px solid var(--line)}
.specs th{
  font-family:"IBM Plex Mono",monospace; font-weight:400; font-size:.72rem; letter-spacing:.08em;
  text-transform:uppercase; color:var(--ink-3); width:52%;
}
.specs td{font-weight:500; font-variant-numeric:tabular-nums}
.specs tr:last-child th,.specs tr:last-child td{border-bottom:none}
.todo{color:var(--ochre); font-family:"IBM Plex Mono",monospace; font-size:.78rem}
.card__foot{padding:16px 22px 20px; display:flex; gap:10px; flex-wrap:wrap; margin-top:auto}

/* ---------- calculator ---------- */
.calc{
  display:grid; grid-template-columns:1.1fr .9fr; gap:0;
  border:1px solid var(--line); border-radius:var(--r); overflow:hidden; background:var(--surface); box-shadow:var(--shadow);
}
@media (max-width:820px){.calc{grid-template-columns:1fr}}
.calc__form{padding:30px}
.calc__out{padding:30px; background:var(--surface-2); border-left:1px solid var(--line); display:flex; flex-direction:column; gap:18px}
@media (max-width:820px){.calc__out{border-left:none; border-top:1px solid var(--line)}}
.field{display:flex; flex-direction:column; gap:6px; margin-bottom:16px}
.field label{
  font-family:"IBM Plex Mono",monospace; font-size:.7rem; letter-spacing:.1em;
  text-transform:uppercase; color:var(--ink-3);
}
.field input,.field select,.field textarea{
  font-family:inherit; font-size:1rem; color:var(--ink); background:var(--ground);
  border:1px solid var(--line-2); border-radius:var(--r); padding:11px 12px; width:100%;
}
.field textarea{min-height:92px; resize:vertical}
.row2{display:grid; grid-template-columns:1fr 1fr; gap:14px}
.hp{position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden}
.result__k{font-family:"IBM Plex Mono",monospace; font-size:.7rem; letter-spacing:.12em; text-transform:uppercase; color:var(--ink-3)}
.result__v{
  font-family:"Barlow Condensed",Arial,sans-serif; font-weight:700; text-transform:uppercase;
  font-size:2.6rem; line-height:1; font-variant-numeric:tabular-nums; margin-top:4px;
}
.result__v small{font-size:1.1rem; color:var(--ink-3); margin-left:6px}
.result__rec{border-top:1px solid var(--line); padding-top:16px}
.result__note{font-size:.86rem; color:var(--ink-3)}

/* ---------- steps ---------- */
.steps{display:grid; grid-template-columns:repeat(4,1fr); gap:20px}
@media (max-width:980px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}
.step{border-top:2px solid var(--ink); padding-top:16px}
.step__n{font-family:"IBM Plex Mono",monospace; font-size:.72rem; letter-spacing:.14em; color:var(--ochre)}
.step h3{margin:8px 0 8px; font-size:1.28rem}
.step p{color:var(--ink-2); font-size:.97rem}

/* ---------- photo slots ---------- */
.gal{display:grid; grid-template-columns:repeat(3,1fr); gap:18px}
@media (max-width:820px){.gal{grid-template-columns:1fr}}
.obra{margin:0; display:flex; flex-direction:column}
.obra img{
  width:100%; height:auto; aspect-ratio:4/3; object-fit:cover; display:block;
  border-radius:3px; background:var(--surface-2);
}
.obra figcaption{
  margin-top:12px; padding-top:10px; border-top:1px solid var(--line);
  display:flex; flex-direction:column; gap:3px;
}
.obra b{
  font-family:"Barlow Condensed",Arial,sans-serif; font-weight:700; text-transform:uppercase;
  font-size:1.08rem; line-height:1.15;
}
.obra span{
  font-family:"IBM Plex Mono",monospace; font-size:.68rem; letter-spacing:.12em;
  text-transform:uppercase; color:var(--ochre);
}

/* ---------- audiences ---------- */
.aud{display:grid; grid-template-columns:repeat(4,1fr); gap:0; border:1px solid var(--line); border-radius:var(--r); background:var(--surface); overflow:hidden}
@media (max-width:940px){.aud{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.aud{grid-template-columns:1fr}}
.aud__c{
  padding:26px 22px; border-right:1px solid var(--line);
  display:flex; flex-direction:column; gap:0;
}
.aud__c .btn{margin-top:auto; align-self:flex-start}
.aud__c .eyebrow{align-items:flex-start; min-height:2.6em}
.aud__c .eyebrow::before{margin-top:.55em}
.aud__c:last-child{border-right:none}
@media (max-width:940px){
  .aud__c{border-bottom:1px solid var(--line)}
  .aud__c:nth-child(2n){border-right:none}
}
.aud__c h3{font-size:1.18rem; margin:10px 0 8px}
.aud__c p{font-size:.93rem; color:var(--ink-2); margin-bottom:20px}

/* ---------- videos / docs ---------- */
.list{border-top:1px solid var(--line)}
.list a{
  display:flex; align-items:center; gap:16px; padding:18px 4px; border-bottom:1px solid var(--line);
  text-decoration:none; transition:background .15s ease, padding .15s ease;
}
.list a:hover{background:var(--surface); padding-left:12px; padding-right:12px}
.list__ic{
  width:38px; height:38px; flex:none; border:1px solid var(--line-2); border-radius:2px;
  display:grid; place-items:center; color:var(--accent);
}
.list a > span:not([class]){flex:1; min-width:0}
.list__t{display:block; font-family:"Barlow Condensed",Arial,sans-serif; font-weight:700; text-transform:uppercase; font-size:1.12rem; line-height:1.15}
.list__d{display:block; font-size:.86rem; color:var(--ink-3); margin-top:3px}
.list__go{margin-left:auto; flex:none; font-family:"IBM Plex Mono",monospace; font-size:.72rem; letter-spacing:.1em; color:var(--ink-3); text-transform:uppercase}
@media (max-width:520px){.list__go{display:none}}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  cursor:pointer; padding:18px 40px 18px 0; position:relative; list-style:none;
  font-family:"Barlow Condensed",Arial,sans-serif; font-weight:700; text-transform:uppercase; font-size:1.14rem;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+"; position:absolute; right:6px; top:16px; font-family:"IBM Plex Mono",monospace; color:var(--ochre); font-size:1.2rem}
.faq details[open] summary::after{content:"–"}
.faq p{padding:0 0 20px; color:var(--ink-2); max-width:72ch}

/* ---------- contact ---------- */
.contact{display:grid; grid-template-columns:1fr 1fr; gap:44px}
@media (max-width:820px){.contact{grid-template-columns:1fr; gap:32px}}
.reviews{
  display:flex; align-items:center; gap:18px; margin-bottom:22px;
  background:var(--surface); border:1px solid var(--line); border-radius:3px; padding:18px 20px;
}
.reviews__score{
  font-family:"Barlow Condensed",Arial,sans-serif; font-weight:700; font-size:2.6rem; line-height:1;
  font-variant-numeric:tabular-nums;
}
.reviews__stars{color:var(--ochre); letter-spacing:.12em; font-size:1rem; line-height:1}
.reviews__txt{font-size:.9rem; color:var(--ink-2); margin-top:5px}
.reviews__txt a{color:var(--accent); text-decoration:none; border-bottom:1px solid var(--line-2)}
.reviews__txt a:hover{border-bottom-color:var(--accent)}
@media (max-width:420px){.reviews{gap:14px; padding:16px}}

.dl{display:flex; flex-direction:column; gap:0; border-top:1px solid var(--line)}
.dl__row{display:flex; gap:16px; padding:14px 0; border-bottom:1px solid var(--line); align-items:baseline}
.dl__k{font-family:"IBM Plex Mono",monospace; font-size:.7rem; letter-spacing:.12em; text-transform:uppercase; color:var(--ink-3); width:96px; flex:none}
.dl__v{font-weight:500}
.dl__v a{text-decoration:none; border-bottom:1px solid var(--line-2)}
.dl__v a:hover{border-bottom-color:var(--accent); color:var(--accent)}

/* ---------- footer ---------- */
.ftr{border-top:1px solid var(--line); background:var(--surface); padding:44px 0 30px}
.ftr__grid{display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:30px}
@media (max-width:820px){.ftr__grid{grid-template-columns:1fr; gap:24px}}
.ftr h3{font-size:1rem; margin-bottom:12px; color:var(--ink-3); letter-spacing:.08em}
.ftr ul{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:8px}
.ftr a{text-decoration:none; color:var(--ink-2); font-size:.93rem}
.ftr a:hover{color:var(--accent)}
.ftr__base{
  margin-top:34px; padding-top:18px; border-top:1px solid var(--line);
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-family:"IBM Plex Mono",monospace; font-size:.72rem; color:var(--ink-3); letter-spacing:.04em;
}

/* floating whatsapp */
.wa{
  position:fixed; right:18px; bottom:18px; z-index:60; display:inline-flex; align-items:center; gap:9px;
  background:#15803D; color:#fff; text-decoration:none; padding:12px 17px; border-radius:100px;
  font-family:"Barlow Condensed",Arial,sans-serif; font-weight:700; text-transform:uppercase; letter-spacing:.04em;
  box-shadow:0 8px 24px -8px rgba(0,0,0,.45);
}
.wa:hover{background:#116932}
@media (max-width:560px){.wa span{display:none} .wa{padding:14px; border-radius:50%}}

/* reveal */
.rv{opacity:0; transform:translateY(14px); transition:opacity .6s ease, transform .6s ease}
.rv.in{opacity:1; transform:none}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1; transform:none; transition:none}
  *{animation-duration:.01ms !important; transition-duration:.01ms !important}
}
/* solo para lectores de pantalla */
.solo-lectores{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0;
}


/* ---------- páginas de producto ---------- */
.miga{
  font-family:"IBM Plex Mono",monospace; font-size:.7rem; letter-spacing:.08em;
  text-transform:uppercase; color:var(--ink-3); margin-bottom:26px;
  display:flex; gap:8px; flex-wrap:wrap; align-items:center;
}
.miga a{color:var(--ink-3); text-decoration:none; border-bottom:1px solid var(--line)}
.miga a:hover{color:var(--accent); border-bottom-color:var(--accent)}
.miga b{color:var(--ink); font-weight:500}
.prod{display:grid; grid-template-columns:1.05fr .95fr; gap:44px; align-items:start}
@media (max-width:900px){.prod{grid-template-columns:1fr; gap:30px}}
.prod h1{font-size:clamp(2.1rem,4.6vw,3.4rem)}
.prod__ficha{
  background:var(--surface); border:1px solid var(--line); border-radius:3px;
  padding:22px 0 0; box-shadow:var(--shadow);
}
.prod__ficha .eyebrow{padding:0 22px; margin-bottom:14px}
.specs--suelta th,.specs--suelta td{padding:10px 22px}
.usos{
  list-style:none; margin:0; padding:0; display:grid;
  grid-template-columns:repeat(2,1fr); gap:0;
  border-top:1px solid var(--line);
}
@media (max-width:640px){.usos{grid-template-columns:1fr}}
.usos li{
  padding:14px 0 14px 26px; border-bottom:1px solid var(--line); position:relative;
  font-weight:500;
}
.usos li::before{content:"—"; position:absolute; left:0; color:var(--ochre)}
.cierre{display:grid; grid-template-columns:1.1fr .9fr; gap:44px; align-items:start}
@media (max-width:900px){.cierre{grid-template-columns:1fr; gap:28px}}
.cierre .dl{border-top:1px solid var(--line)}