/* ============================================================
   GRUPO SEIS · «PLIEGO DE RUTA» · hoja compartida de contenido
   Subconjunto del sistema de index.html para las paginas de
   referencia tecnica. Mismos tokens, misma firma (la cota).
   index.html y en/index.html NO usan este archivo: conservan
   su CSS embebido para no arriesgar la portada.
   ============================================================ */

*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{-webkit-text-size-adjust:100%}

:root{
  --papel:#FAF8F5;
  --panel:#F3F0EA;
  --panel-2:#EBE5D9;
  --beige:#E3D9C6;

  --tinta:#1F1F1F;
  --tinta-2:#333333;
  --texto:#4A473F;
  --tenue:#635E53;

  --bronce:#7C5D3F;
  --bronce-claro:#A8845C;

  --regla:rgba(31,31,31,.14);
  --regla-fuerte:rgba(31,31,31,.30);
  --regla-oscura:rgba(227,217,198,.20);

  --display:'Archivo',system-ui,sans-serif;
  --texto-f:'Spectral',Georgia,serif;
  --mono:'Martian Mono',ui-monospace,monospace;

  --maxw:1180px;
  --aire-sm:76px;
  --aire-md:116px;
  --aire-xl:168px;

  --r-1:2px;

  --ease:cubic-bezier(.2,.8,.2,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  background:var(--papel);
  color:var(--texto);
  font-family:var(--texto-f);
  font-size:17.5px;line-height:1.66;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-family:var(--display);
  font-variation-settings:'wdth' 112;
  color:var(--tinta);
  font-weight:700;line-height:1.06;letter-spacing:-.012em;
  text-wrap:balance;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}

:focus-visible{outline:2px solid var(--bronce);outline-offset:3px;border-radius:var(--r-1)}
.skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--tinta);color:var(--beige);padding:14px 22px;font-family:var(--mono);font-size:13px}
.skip:focus{left:0}

/* ---------- La cota: firma de la marca ---------- */
.cota{display:flex;align-items:center;width:100%;height:11px}
.cota i,.cota b{background:var(--bronce);display:block}
.cota i{width:1.4px;height:11px;flex:none;transform:scaleY(0);transform-origin:center;transition:transform .3s var(--ease) .5s}
.cota b{flex:1;height:1.4px;transform:scaleX(0);transform-origin:left;transition:transform .62s var(--ease) .18s}
.js .cota.go i,.js .in .cota i{transform:scaleY(1)}
.js .cota.go b,.js .in .cota b{transform:scaleX(1)}
html:not(.js) .cota i{transform:scaleY(1)}
html:not(.js) .cota b{transform:scaleX(1)}

/* ---------- Cajetin de seccion ---------- */
.cajetin{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:22px;
  border-top:1px solid var(--regla-fuerte);
  border-bottom:1px solid var(--regla);
  padding:11px 0;margin-bottom:44px;
  font-family:var(--mono);font-size:11px;font-weight:400;
  text-transform:uppercase;letter-spacing:.17em;color:var(--bronce);
}
.cajetin .tit{color:var(--tinta);font-weight:600;letter-spacing:.2em}
.cajetin .rev{color:var(--tenue)}
.cajetin::after{
  content:'';position:absolute;left:0;right:0;top:-1px;height:1px;background:var(--bronce);
  transform:scaleX(0);transform-origin:left;transition:transform .52s var(--ease-out);
}
.in.cajetin::after,.in .cajetin::after{transform:scaleX(1)}
.banda .cajetin{border-top-color:rgba(227,217,198,.42);border-bottom-color:var(--regla-oscura);color:var(--beige)}
.banda .cajetin .tit{color:#fff}
.banda .cajetin .rev{color:#A39B8C}

/* ---------- Tipografia ---------- */
.display{font-size:clamp(2rem,3.9vw,3.05rem)}
.sub{font-size:clamp(1.06rem,1.35vw,1.2rem);color:var(--texto);max-width:56ch;line-height:1.62}
.nota{font-family:var(--mono);font-size:12px;line-height:1.85;color:var(--tenue);letter-spacing:.01em;max-width:62ch}
.key{color:var(--bronce);position:relative}
.banda .sub,.banda p{color:#CFC8BA}
.banda h2,.banda h3{color:#fff}
.banda strong{color:var(--beige);font-weight:600}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:11px;white-space:nowrap;
  min-height:52px;padding:0 26px;border-radius:var(--r-1);
  font-family:var(--mono);font-size:13px;font-weight:500;
  text-transform:uppercase;letter-spacing:.12em;
  border:1.5px solid var(--tinta);cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn-solid{background:var(--tinta);color:var(--beige)}
.btn-solid:hover{background:#000;border-color:#000}
.btn-solid:active{transform:translateY(1px)}
.btn-line{background:transparent;color:var(--tinta)}
.btn-line:hover{background:var(--tinta);color:var(--beige)}
.btn-line:active{transform:translateY(1px)}
.banda .btn-line{border-color:var(--beige);color:var(--beige)}
.banda .btn-line:hover{background:var(--beige);color:var(--tinta)}
.btn svg{width:15px;height:15px;flex:none}

/* ---------- Nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(250,248,245,.90);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background-color .3s var(--ease);
}
.nav.is-stuck{border-bottom-color:var(--regla-fuerte);background:rgba(250,248,245,.97)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 28px;height:70px;display:flex;align-items:center;justify-content:space-between;gap:24px}

.brand{display:flex;align-items:center;gap:11px;font-family:var(--display);font-variation-settings:'wdth' 112;font-weight:800;font-size:17px;letter-spacing:.06em;text-transform:uppercase;color:var(--tinta)}
.brand img{display:block;width:auto;height:23px}
.footer .brand img{height:30px}

.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{
  display:flex;align-items:center;min-height:44px;padding:0 10px;white-space:nowrap;
  font-family:var(--mono);font-size:11px;font-weight:400;text-transform:uppercase;letter-spacing:.09em;
  color:var(--tenue);position:relative;transition:color .16s var(--ease);
}
.nav-links a::after{content:'';position:absolute;left:10px;right:10px;bottom:11px;height:1px;background:var(--bronce);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.nav-links a:hover{color:var(--tinta)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a[aria-current="page"]{color:var(--tinta)}
.nav-links a[aria-current="page"]::after{transform:scaleX(1)}
.nav .btn{min-height:44px;padding:0 18px;font-size:11px;letter-spacing:.09em}

.burger{display:none;width:46px;height:46px;border:1.5px solid var(--tinta);border-radius:var(--r-1);background:transparent;cursor:pointer;align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:1.6px;background:var(--tinta);position:relative}
.burger span::before,.burger span::after{content:'';position:absolute;left:0;width:18px;height:1.6px;background:var(--tinta);transition:transform .22s var(--ease)}
.burger span::before{top:-6px}.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-menu{display:none}

/* ---------- Secciones ---------- */
.s{padding:var(--aire-md) 0}
.s-sm{padding:var(--aire-sm) 0}
.s-head{margin-bottom:52px}
.s-head .display{margin-bottom:18px;max-width:24ch}
.s-head .sub{max-width:56ch}

.banda{color:#CFC8BA;position:relative}
.banda-in{background:var(--tinta);padding:var(--aire-md) 0}
.js .banda-in{clip-path:inset(0 0 100% 0);transition:clip-path .72s var(--ease-out)}
.js .banda.in .banda-in{clip-path:inset(0 0 0 0)}

/* ---------- Migas ---------- */
.migas{
  font-family:var(--mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.14em;
  color:var(--tenue);display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin-bottom:26px;
}
.migas a{color:var(--tenue);border-bottom:1px solid transparent;transition:color .16s var(--ease),border-color .16s var(--ease)}
.migas a:hover{color:var(--bronce);border-bottom-color:var(--bronce)}
.migas span[aria-current]{color:var(--tinta)}
.migas i{font-style:normal;color:var(--regla-fuerte);color:rgba(31,31,31,.32)}

/* ---------- Encabezado de pagina ---------- */
.doc-hero{padding:132px 0 0}
.doc-hero h1{font-size:clamp(2.15rem,4.4vw,3.4rem);font-weight:800;letter-spacing:-.018em;max-width:19ch}
.doc-hero .cota{max-width:420px;margin:18px 0 26px}
.doc-hero .sub{max-width:60ch;font-size:clamp(1.08rem,1.4vw,1.24rem)}
.doc-meta{
  display:flex;flex-wrap:wrap;gap:10px 30px;margin-top:30px;padding-top:18px;
  border-top:1px solid var(--regla);
  font-family:var(--mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.14em;color:var(--tenue);
}
.doc-meta b{color:var(--bronce);font-weight:500}

/* ---------- Titular de seccion ----------
   Va DESPUES del cajetin y antes del contenido. Existe para que la jerarquia
   sea h1 > h2 > h3 sin saltos: sin el, cada seccion arrancaba en h3 y el
   documento no tenia esqueleto ni para el lector de pantalla ni para el motor. */
.doc-h2{font-size:clamp(1.6rem,2.6vw,2.15rem);margin:0 0 26px;max-width:26ch}

/* ---------- Prosa del documento ---------- */
.prosa{max-width:68ch}
.prosa h2{font-size:clamp(1.55rem,2.5vw,2.05rem);margin:0 0 18px}
.prosa h3{font-size:clamp(1.12rem,1.5vw,1.32rem);margin:38px 0 12px}
.prosa p{margin-bottom:20px}
.prosa p:last-child{margin-bottom:0}
.prosa strong{color:var(--tinta);font-weight:600}
.prosa>ul{list-style:none;margin:0 0 22px;padding:0}
.prosa>ul>li{position:relative;padding-left:26px;margin-bottom:12px}
.prosa>ul>li::before{content:'';position:absolute;left:0;top:.72em;width:11px;height:1.4px;background:var(--bronce)}
.prosa a:not(.btn){color:var(--bronce);border-bottom:1px solid rgba(124,93,63,.38);transition:border-color .16s var(--ease)}
.prosa a:not(.btn):hover{border-bottom-color:var(--bronce)}
.bloque+.bloque{margin-top:var(--aire-sm)}

/* ---------- Ficha de datos: el nucleo citable ---------- */
.ficha{border-top:1px solid var(--regla-fuerte);margin:34px 0 26px}
.ficha-row{
  display:grid;grid-template-columns:1fr auto;gap:20px;align-items:baseline;
  padding:15px 16px 15px 0;border-bottom:1px solid var(--regla);
  position:relative;transition:background-color .18s var(--ease)
}
.ficha-row::before{content:'';position:absolute;left:0;top:0;bottom:0;width:1px;background:var(--bronce);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.ficha-row:hover{background:var(--panel)}
.ficha-row:hover::before{transform:scaleX(3)}
.ficha-row .k{font-size:16px;color:var(--texto);padding-left:16px}
.ficha-row .v{
  font-family:var(--display);font-variation-settings:'wdth' 118;font-weight:700;
  font-size:19px;color:var(--tinta);letter-spacing:-.018em;line-height:1.2;
  font-variant-numeric:tabular-nums;white-space:nowrap;text-align:right;
}
.ficha-pie{font-family:var(--mono);font-size:10.5px;line-height:1.8;color:var(--tenue);letter-spacing:.02em;max-width:70ch;margin-bottom:38px}
.ficha-pie:last-child{margin-bottom:0}
.ficha-pie a{color:var(--bronce);border-bottom:1px solid rgba(124,93,63,.38)}

/* ---------- Filas numeradas ---------- */
.filas{border-top:1px solid var(--regla-fuerte)}
.fila{
  display:grid;grid-template-columns:78px 1fr;gap:26px;align-items:start;
  padding:26px 22px 26px 0;border-bottom:1px solid var(--regla);
  position:relative;transition:background-color .2s var(--ease),transform .18s var(--ease);
}
.fila::before{content:'';position:absolute;left:0;top:0;bottom:0;width:1px;background:var(--bronce);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.fila:hover{background:var(--panel);transform:translateX(3px)}
.fila:hover::before{transform:scaleX(3)}
.fila .num{font-family:var(--mono);font-size:12px;color:var(--bronce);letter-spacing:.1em;padding-left:22px;padding-top:3px}
.fila h3{font-size:19.5px;margin-bottom:8px}
.fila p{font-size:16px;max-width:62ch;color:var(--texto);margin:0}

/* ---------- Pliego en rejilla ---------- */
.pliego{display:grid;gap:1px;background:var(--regla);border-top:1px solid var(--regla);border-bottom:1px solid var(--regla)}
.pliego-2{grid-template-columns:1fr 1fr}
.pliego-3{grid-template-columns:repeat(3,1fr)}
.celda{background:var(--papel);padding:30px 30px 32px;position:relative;transition:background-color .2s var(--ease),transform .18s var(--ease)}
.celda::before{content:'';position:absolute;left:0;top:0;bottom:0;width:1px;background:var(--bronce);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.celda:hover{background:var(--panel);transform:translateX(2px)}
.celda:hover::before{transform:scaleX(3)}
.celda .idx{font-family:var(--mono);font-size:11px;color:var(--bronce);letter-spacing:.14em;display:block;margin-bottom:15px;text-transform:uppercase}
.celda h3{font-size:19px;margin-bottom:11px}
.celda p{font-size:15.5px;line-height:1.6;color:var(--texto);margin:0}

/* ---------- Aviso acotado ---------- */
.aviso{
  border-left:2px solid var(--bronce);background:var(--panel);
  padding:20px 24px;margin:30px 0;max-width:68ch;
}
.aviso p{font-size:16px;margin:0}
.aviso p+p{margin-top:12px}
.aviso .k{
  display:block;font-family:var(--mono);font-size:10px;text-transform:uppercase;
  letter-spacing:.16em;color:var(--bronce);margin-bottom:9px;
}

/* ---------- FAQ ---------- */
.faq-list{max-width:840px;border-top:1px solid var(--regla-fuerte)}
.faq-item{border-bottom:1px solid var(--regla);position:relative}
.faq-item::before{content:'';position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--bronce);transform:scaleY(0);transform-origin:top;transition:transform .26s var(--ease-out)}
.faq-item.open::before{transform:scaleY(1)}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  min-height:64px;padding:20px 22px;display:flex;align-items:center;justify-content:space-between;gap:22px;
  font-family:var(--display);font-variation-settings:'wdth' 108;font-weight:600;font-size:18px;
  color:var(--tinta);letter-spacing:-.008em;transition:color .16s var(--ease),transform .2s var(--ease);
}
.faq-q:hover{color:var(--bronce)}
.faq-item.open .faq-q{transform:translateX(6px)}
.faq-q .pm{position:relative;width:14px;height:14px;flex:none}
.faq-q .pm::before,.faq-q .pm::after{content:'';position:absolute;background:var(--bronce);transition:transform .26s var(--ease),opacity .26s var(--ease)}
.faq-q .pm::before{top:6.2px;left:0;width:14px;height:1.6px}
.faq-q .pm::after{left:6.2px;top:0;width:1.6px;height:14px}
.faq-q[aria-expanded="true"] .pm::after{transform:rotate(90deg);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease-out)}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a>div{overflow:hidden;min-height:0}
.faq-a p{padding:0 22px 24px 28px;font-size:16.5px;max-width:70ch;margin:0}

/* ---------- Siguientes hojas ---------- */
.hojas{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--regla-oscura);border-top:1px solid var(--regla-oscura);border-bottom:1px solid var(--regla-oscura)}
.hoja{background:var(--tinta);padding:28px 26px 30px;display:flex;flex-direction:column;gap:10px;transition:background-color .2s var(--ease)}
.hoja:hover{background:#000}
.hoja .idx{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:.16em;color:var(--bronce-claro)}
.hoja h3{font-size:18px;color:#fff}
.hoja p{font-size:15px;line-height:1.55;color:#A39B8C;margin:0}

/* ---------- Cierre ---------- */
.cierre{max-width:60ch}
.cierre .display{margin-bottom:18px}
.cierre .sub{margin-bottom:32px}
.cierre-cta{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.footer{background:var(--tinta);color:#A39B8C;padding:62px 0 28px;border-top:1px solid var(--regla-oscura)}
.footer .brand{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:42px;margin-bottom:44px}
.footer-brand p{font-size:15.5px;margin-top:16px;max-width:36ch;color:#A39B8C}
/* h3 y no h4: el salto h2 -> h4 rompia la secuencia de encabezados.
   El nivel es semantico, el tamano lo pone el CSS. */
.footer h3,.footer h4{font-family:var(--mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.15em;color:var(--beige);margin-bottom:14px;font-weight:500}
.footer ul{list-style:none}
.footer ul a{display:flex;align-items:center;min-height:40px;font-size:15px;color:#A39B8C;transition:color .16s var(--ease)}
.footer ul a:hover{color:#fff}
.footer-bottom{border-top:1px solid var(--regla-oscura);padding-top:22px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;color:#9C9488;letter-spacing:.06em}

/* ---------- WhatsApp ---------- */
.wa{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:inline-flex;align-items:center;gap:9px;
  min-height:48px;padding:0 18px;border-radius:var(--r-1);
  background:var(--beige);color:var(--tinta);
  font-family:var(--mono);font-size:11.5px;font-weight:500;text-transform:uppercase;letter-spacing:.12em;
  border:1px solid var(--tinta);
  transition:transform .2s var(--ease),opacity .28s var(--ease),visibility .28s;
}
.wa:hover{transform:translateY(-2px)}
.wa svg{width:17px;height:17px}

/* ---------- Reveal ---------- */
.js .rv{opacity:0;transform:translateY(14px);transition:opacity .55s var(--ease-out),transform .55s var(--ease-out)}
.js .rv.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .pliego-3,.hojas{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  :root{--aire-xl:128px;--aire-md:96px}
}
@media (max-width:768px){
  body{font-size:17px;padding-bottom:84px}
  .wrap{padding:0 20px}
  .nav-inner{height:64px;padding:0 20px}
  .nav-links,.nav .btn-solid{display:none}
  .burger{display:flex}
  .mobile-menu{
    display:grid;grid-template-rows:0fr;overflow:hidden;
    position:fixed;top:64px;left:0;right:0;z-index:99;
    background:var(--papel);border-bottom:0 solid var(--regla-fuerte);
    transition:grid-template-rows .3s var(--ease-out);
  }
  .mobile-menu.open{grid-template-rows:1fr;border-bottom-width:1px}
  .mm-inner{min-height:0;overflow:hidden}
  .mobile-menu ul{list-style:none;padding:6px 20px 22px}
  .mobile-menu li{border-bottom:1px solid var(--regla)}
  .mobile-menu li:last-child{border-bottom:0;padding-top:16px}
  .mobile-menu li>a:not(.btn){
    display:flex;align-items:center;min-height:52px;
    font-family:var(--mono);font-size:12.5px;text-transform:uppercase;letter-spacing:.12em;color:var(--tinta);
  }
  .mobile-menu .btn-solid{width:100%;color:var(--beige);background:var(--tinta)}

  .doc-hero{padding-top:104px}
  .pliego-2{grid-template-columns:1fr}
  .fila{grid-template-columns:1fr;gap:10px;padding:22px 18px 24px 0}
  .fila .num,.fila h3,.fila p{padding-left:18px}
  .ficha-row{grid-template-columns:1fr;gap:6px}
  .ficha-row .v{text-align:left}
  .ficha-row .k{padding-left:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cajetin{flex-wrap:wrap;gap:8px 16px;font-size:10px}
  .cierre-cta .btn{width:100%}
  .wa{right:16px;bottom:16px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .rv{opacity:1;transform:none}
  .js .banda-in{clip-path:none!important}
}