/* ==========================================================================
   tarjetaconstruccion.net — diseño premium (sistema de iarank.es, 14/09/2026)
   Paleta y tipografia del PROMPT-WEB-PREMIUM.md. Un solo acento frio; el dorado
   es de la marca y de los botones de accion. Textos sobre imagen: blanco 600
   con sombra en capas, NUNCA mix-blend-mode: difference.
   ========================================================================== */
:root{
  --negro:#050506;--carbon:#0c0c0e;--grafito:#18191c;--linea:rgba(239,233,221,.12);
  --marfil:#efe9dd;--marfil-2:#bdb7ab;--metal:#8d9098;--acento:#9fe3f2;--oro:#d4af37;
  --serif:"Cormorant Garamond",Georgia,"Times New Roman",serif;
  --mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  --sans:Barlow,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --ancho:1320px;--aire:clamp(72px,9vw,140px);--curva:cubic-bezier(.2,.7,.2,1);
  --sombra-txt:0 2px 6px rgba(0,0,0,.95),0 0 34px rgba(0,0,0,.9),0 0 90px rgba(0,0,0,.75);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:90px}
body{margin:0;background:var(--negro);color:var(--marfil);font:400 17px/1.65 var(--sans);overflow-x:hidden}
img,video{max-width:100%;height:auto;display:block}
a{color:var(--acento);text-underline-offset:3px}
a:hover{color:#fff}
:focus-visible{outline:1px solid var(--acento);outline-offset:3px}
.salta{position:absolute;left:-999px;top:8px;background:var(--oro);color:#000;padding:8px 14px;z-index:100}
.salta:focus{left:8px}
.env{width:min(var(--ancho),100% - 40px);margin-inline:auto}
[hidden]{display:none!important}

/* grano de pelicula fijo */
.grano{position:fixed;inset:-50%;pointer-events:none;z-index:90;opacity:.05;
  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='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

.rotulo{font:500 12px/1.4 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--metal);margin:0 0 1rem}
.titular{font:300 clamp(40px,6.2vw,92px)/.98 var(--serif);letter-spacing:-.02em;margin:0 0 1.4rem;color:var(--marfil)}
.titular em{font-style:italic;color:var(--marfil-2)}

/* láser: haz dorado fino que cruza el texto y descansa */
.laser{background:linear-gradient(100deg,var(--marfil) 0 42%,#fff3c4 48%,var(--oro) 50%,#fff3c4 52%,var(--marfil) 58% 100%);
  background-size:300% 100%;background-position:100% 0;-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;animation:laser 9s var(--curva) infinite}
.laser em{-webkit-text-fill-color:var(--marfil-2)}
@keyframes laser{0%,70%{background-position:100% 0}100%{background-position:0 0}}

/* ------------------------------------------------------------------ botones */
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.85em 1.4em;border-radius:999px;font:600 15px/1 var(--sans);
  text-decoration:none;cursor:pointer;border:1px solid transparent;position:relative;overflow:hidden;
  transition:transform .25s var(--curva),background .25s,color .25s}
.btn:hover{transform:translateY(-1px)}
.btn--oro{background:rgba(212,175,55,.14);border-color:rgba(212,175,55,.55);color:#f6e7b0}
.btn--oro:hover{background:rgba(212,175,55,.26);color:#fff}
.btn--oro::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,transparent 30%,rgba(255,236,170,.35) 50%,transparent 70%);
  transform:translateX(-120%);animation:brillo 6s var(--curva) infinite}
.btn--oro:nth-of-type(2n)::after{animation-delay:1.2s}
@keyframes brillo{0%,75%{transform:translateX(-120%)}100%{transform:translateX(120%)}}
.btn--linea{border-color:var(--linea);color:var(--marfil)}
.btn--linea:hover{border-color:var(--acento);color:#fff}

/* ------------------------------------------------------------------ barra */
.barra{position:fixed;top:0;left:0;right:0;z-index:50;padding-top:env(safe-area-inset-top,0px);
  transition:background .35s,backdrop-filter .35s,border-color .35s;border-bottom:1px solid transparent}
.barra.oscura,body:not(.es-portada) .barra{background:rgba(5,5,6,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-color:var(--linea)}
.barra__in{display:flex;align-items:center;gap:18px;width:min(1560px,100% - 32px);margin:auto;height:72px;position:relative}
.marca{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--marfil)}
.marca__m{display:grid;place-items:center;width:38px;height:38px;border:1px solid rgba(212,175,55,.6);border-radius:50%;
  font:500 14px/1 var(--mono);color:var(--oro);letter-spacing:.05em;flex:0 0 auto}
.marca__t{display:flex;flex-direction:column;line-height:1.1}
.marca__t b{font:500 22px/1 var(--serif);letter-spacing:.01em}
.marca__t b i{color:var(--oro)}
.marca__t small{font:400 10.5px/1.4 var(--mono);color:var(--metal);letter-spacing:.12em;text-transform:uppercase;margin-top:3px}
.nav{margin-left:auto}
.nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.nav a{display:block;padding:9px 13px;color:var(--marfil-2);text-decoration:none;font:500 14.5px/1 var(--sans);border-radius:999px}
.nav a:hover,.nav a[aria-current="page"]{color:#fff;background:rgba(239,233,221,.07)}
.btn--tel{padding:.7em 1.1em;white-space:nowrap}
.menu-btn{display:none;background:none;border:1px solid var(--linea);border-radius:50%;width:44px;height:44px;cursor:pointer;padding:0;flex:0 0 auto}
.menu-btn span{display:block;width:18px;height:1.5px;background:var(--marfil);margin:5px auto}
@media (max-width:1080px){
  .menu-btn{display:block;order:3}
  .btn--tel{margin-left:auto;order:2;padding:.6em .9em;font-size:14px}
  .nav{position:absolute;top:100%;left:-16px;right:-16px;background:rgba(5,5,6,.97);border-bottom:1px solid var(--linea);display:none;margin:0}
  .nav.abierto{display:block}
  .nav ul{flex-direction:column;padding:10px 16px 18px}
  .nav a{padding:14px 10px;font-size:17px}
  .marca__t small{display:none}
}
@media (max-width:440px){.marca__t{display:none}.btn--tel span{display:none}}

/* ------------------------------------------------------------------ carga */
.carga{position:fixed;inset:0;z-index:80;background:var(--negro);display:grid;place-content:center;gap:22px;transition:opacity .7s,visibility .7s}
.carga.fuera{opacity:0;visibility:hidden}
.carga__marca{font:300 clamp(34px,5vw,56px)/1 var(--serif);margin:0;text-align:center}
.carga__marca i{color:var(--oro)}
.carga__barra{width:min(280px,70vw);height:1px;background:var(--linea)}
.carga__barra span{display:block;height:100%;width:0;background:var(--oro);transition:width .3s}

/* ------------------------------------------------------------------ portada */
.hero{position:relative;height:420vh}
.hero__fijo{position:sticky;top:0;height:100svh;overflow:hidden}
.hero__medio,.hero__quieta{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero__quieta{display:none}
.hero__sombra{position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,5,6,.85) 0,rgba(5,5,6,.35) 45%,transparent 70%),
  linear-gradient(0deg,var(--negro) 0,transparent 25%)}
.hero__a,.hero__b{position:absolute;left:max(24px,6vw);right:24px;top:50%;transform:translateY(-50%);max-width:780px;
  color:#fff;text-shadow:var(--sombra-txt)}
.hero__a .rotulo{color:#e9dfc4;font-weight:500}
.hero__marca{font:400 clamp(46px,7.4vw,118px)/.9 var(--serif);letter-spacing:-.025em;margin:0 0 1.2rem}
.hero__marca em{display:block;font-style:italic;color:#f3e6bf}
.hero__frase{font:600 clamp(17px,1.6vw,22px)/1.4 var(--sans);margin:0}
.hero__b{opacity:0}
.hero__frase2{font:500 clamp(32px,4.4vw,64px)/1.08 var(--serif);margin:0}
.hero__frase2 em{color:#f3e6bf}
.hero__gigante{position:absolute;inset:0;display:grid;place-items:center;margin:0;opacity:0;text-align:center;
  font:400 clamp(64px,13vw,220px)/.9 var(--serif);letter-spacing:-.04em;color:#fff;text-shadow:var(--sombra-txt);pointer-events:none}
.hero__pista{position:absolute;left:50%;bottom:28px;transform:translateX(-50%);margin:0;font:500 11px/1 var(--mono);
  letter-spacing:.25em;text-transform:uppercase;color:#e9dfc4;display:flex;flex-direction:column;align-items:center;gap:10px}
.hero__pista span{width:1px;height:42px;background:linear-gradient(var(--oro),transparent);animation:pista 2s infinite}
@keyframes pista{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.hero__velo{position:absolute;inset:0;background:var(--negro);opacity:0;pointer-events:none}
@media (max-width:767px){.hero{height:320vh}.hero__medio{object-position:72% 50%}
  .hero__sombra{background:linear-gradient(0deg,rgba(5,5,6,.95) 0,rgba(5,5,6,.45) 60%,rgba(5,5,6,.2))}
  /* arriba y no abajo: abajo lo tapaba el aviso de cookies en la primera visita (15/09) */
  .hero__sombra{background:linear-gradient(180deg,rgba(5,5,6,.92) 0,rgba(5,5,6,.45) 55%,rgba(5,5,6,.15))}
  .hero__a,.hero__b{top:104px;bottom:auto;transform:none}}

/* ------------------------------------------------------------------ secciones */
.seccion{padding-block:var(--aire);position:relative}
.intro__col{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(32px,6vw,96px);align-items:start;margin-top:2rem}
.intro__p{font-size:clamp(18px,1.5vw,21px);color:var(--marfil-2);margin:0}
.cifras{list-style:none;margin:0;padding:0}
.cifras li{display:flex;align-items:baseline;gap:22px;padding:18px 0;border-top:1px solid var(--linea)}
.cifras li:last-child{border-bottom:1px solid var(--linea)}
.cifra{font:300 clamp(52px,6vw,86px)/1 var(--serif);color:var(--marfil);min-width:2.2ch}
.cifra__t{color:var(--marfil-2);transition:transform .3s var(--curva);transform-origin:left}
.cifras li:hover .cifra__t{transform:scale(1.15)}
@media (max-width:860px){.intro__col{grid-template-columns:1fr}}

/* vista despiezada */
.ana{padding-block:0}
.ana__escena{height:260vh}
.ana__fijo{position:sticky;top:0;height:100svh;display:flex;flex-direction:column;justify-content:center;overflow:hidden;padding-top:72px}
.ana__cab{margin-bottom:clamp(8px,2vw,24px)}
/* ancho limitado TAMBIEN por el alto: en 1440x900 la lamina (795 px) mas el titular no cabian,
   el titular quedaba bajo la barra y la etiqueta de abajo fuera de pantalla (visto 15/09) */
.ana__lamina{position:relative;width:min(1560px,100%,calc((100svh - 250px) * 1920 / 1072));margin:0 auto;aspect-ratio:1920/1072}
.ana__trozo{position:absolute;top:0;height:100%;background-image:url(/premium/despiece-1920.webp);background-repeat:no-repeat;
  mix-blend-mode:screen;will-change:transform;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 var(--fi),#000 var(--fd),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 var(--fi),#000 var(--fd),transparent 100%)}
.ana__entera{position:absolute;inset:0;width:100%;height:100%;opacity:0}
.pieza{position:absolute;transform:translate(-50%,-50%);background:none;border:0;padding:0;cursor:pointer;color:#fff;text-align:left;opacity:0}
.pieza__punto{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--oro);box-shadow:0 0 0 4px rgba(212,175,55,.25),0 0 18px var(--oro);vertical-align:middle}
.pieza__nombre{font:500 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;margin-left:10px;vertical-align:middle;text-shadow:var(--sombra-txt)}
.pieza__texto{position:absolute;left:0;top:26px;width:min(270px,60vw);padding:14px 16px;background:rgba(12,12,14,.94);border:1px solid var(--linea);
  font:400 14.5px/1.5 var(--sans);color:var(--marfil);opacity:0;transform:translateY(6px);pointer-events:none;transition:opacity .25s,transform .25s}
.pieza.abajo .pieza__texto{top:auto;bottom:26px}
.pieza:hover .pieza__texto,.pieza:focus-visible .pieza__texto,.pieza.activa .pieza__texto{opacity:1;transform:none}
.pieza.estalla .pieza__punto{animation:estalla .7s ease-out}
@keyframes estalla{0%{box-shadow:0 0 0 0 rgba(212,175,55,.9),0 0 0 0 var(--oro)}100%{box-shadow:0 0 0 22px rgba(212,175,55,0),0 0 40px transparent}}
.ana__lista{display:none;padding:0 0 var(--aire) 1.2em;color:var(--marfil-2)}
.ana__lista li{margin:.6rem 0}
@media (max-width:767px){.ana__escena{height:190vh}.pieza__nombre,.pieza__texto{display:none}.ana__lista{display:block}}

/* bloque empresas */
.empresas-cta__in{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,80px);align-items:center}
.empresas-cta__img{overflow:hidden;border:1px solid var(--linea)}
.empresas-cta p{color:var(--marfil-2);font-size:18px}
.dron{animation:dron 16s ease-in-out infinite alternate}
@keyframes dron{0%{transform:scale(1.06) translate(0,0)}50%{transform:scale(1.08) translate(-8px,4px)}100%{transform:scale(1.06) translate(6px,-5px)}}
@media (max-width:860px){.empresas-cta__in{grid-template-columns:1fr}}

/* ------------------------------------------------------------------ interiores */
.cab-int{position:relative;min-height:clamp(340px,52vh,540px);display:flex;align-items:flex-end;overflow:hidden;padding:120px 0 56px}
.cab-int__img{position:absolute;inset:0}
.cab-int__img img{width:100%;height:100%;object-fit:cover;opacity:.55;animation:dron 22s ease-in-out infinite alternate}
.cab-int__velo{position:absolute;inset:0;background:linear-gradient(0deg,var(--negro) 0,rgba(5,5,6,.6) 55%,rgba(5,5,6,.35)),linear-gradient(90deg,rgba(5,5,6,.85),transparent 70%)}
.cab-int__txt{position:relative;color:#fff;text-shadow:var(--sombra-txt)}
.cab-int__txt .rotulo{color:#e9dfc4}
.cab-int .titular{font-size:clamp(34px,5.2vw,74px);max-width:22ch;color:#fff;font-weight:400;overflow-wrap:anywhere}
.entradilla{font:600 clamp(17px,1.5vw,20px)/1.5 var(--sans);max-width:62ch;margin:0}

.con-lateral{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:clamp(28px,5vw,72px);padding-block:clamp(40px,6vw,90px)}
.de-siempre .con-lateral{padding-block:0}
.principal{min-width:0}
.lateral{align-self:start;position:sticky;top:96px;border:1px solid var(--linea);background:var(--carbon);padding:26px 24px;font-size:15.5px}
.lateral .bloque-t{font:400 26px/1.1 var(--serif);margin:1.4rem 0 .6rem}
.lateral .bloque-t:first-child{margin-top:0}
.lateral .prosa p{margin:.4rem 0}
.lateral img{max-width:160px}
@media (max-width:980px){.con-lateral{grid-template-columns:1fr}.lateral{position:static}}

.bloque-t{font:400 clamp(28px,3.2vw,44px)/1.08 var(--serif);margin:3rem 0 1rem;color:var(--marfil)}
.prosa{color:var(--marfil-2);overflow-wrap:anywhere}
.prosa h2,.prosa h3,.prosa h4{font:400 clamp(24px,2.6vw,34px)/1.15 var(--serif);color:var(--marfil);margin:2rem 0 .8rem}
.prosa strong,.prosa b{color:var(--marfil);font-weight:600}
.prosa ul,.prosa ol{padding-left:1.2em}
.prosa li{margin:.25rem 0}
.prosa table{border-collapse:collapse;width:100%;margin:1.2rem 0;font-size:15.5px;display:block;overflow-x:auto}
.prosa td,.prosa th{border:1px solid var(--linea);padding:10px 12px;vertical-align:top}
.prosa td p{margin:0}
.figura{margin:1.6rem 0}
.figura img{border:1px solid var(--linea)}
.figura figcaption{font:400 13px/1.4 var(--mono);color:var(--metal);margin-top:8px}
.descarga{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin:1.6rem 0}
.descarga__d{color:var(--metal);font-size:14px}
.mapa{margin:1.6rem 0}
.sello a{font:500 13px/1 var(--mono);letter-spacing:.08em;color:var(--metal)}
.mapa-sitio{columns:2 320px;padding:0 0 0 1.2em;margin:0}
.mapa-sitio li{margin:.35rem 0;break-inside:avoid}

/* legales y guias nuevas */
.seccion-simple{padding-block:clamp(40px,6vw,90px)}
.doc{max-width:860px}
.doc h2{font:400 clamp(28px,3vw,40px)/1.1 var(--serif);margin:3rem 0 1rem;color:var(--marfil)}
.doc h2 .num{font:500 13px/1 var(--mono);color:var(--oro);margin-right:.8em;vertical-align:middle}
.doc h3{font:400 26px/1.15 var(--serif);color:var(--marfil);margin:2rem 0 .6rem}
.doc p,.doc li{color:var(--marfil-2)}
.doc strong{color:var(--marfil)}
.ficha{border:1px solid var(--linea);background:var(--carbon);margin:1.4rem 0;padding:0}
.ficha div{display:grid;grid-template-columns:200px 1fr;gap:16px;padding:12px 18px;border-top:1px solid var(--linea)}
.ficha div:first-child{border-top:0}
.ficha dt{font:500 12px/1.5 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--metal)}
.ficha dd{margin:0;color:var(--marfil)}
@media (max-width:600px){.ficha div{grid-template-columns:1fr;gap:4px}}
.tabla{overflow-x:auto;margin:1.4rem 0}
.tabla table{border-collapse:collapse;width:100%;min-width:560px;font-size:15.5px}
.tabla th,.tabla td{border-bottom:1px solid var(--linea);padding:12px 14px;text-align:left;vertical-align:top;color:var(--marfil-2)}
.tabla th{font:500 12px/1.4 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--metal)}
.tabla td:first-child{color:var(--marfil)}
.indice{border-left:1px solid var(--oro);padding:4px 0 4px 20px;margin:2rem 0}
.indice ol{margin:0;padding-left:1.2em;columns:2 260px}
.aviso{border:1px solid rgba(159,227,242,.35);background:rgba(159,227,242,.05);padding:18px 20px;margin:1.6rem 0}
.aviso p{margin:0;color:var(--marfil)}
.fuente{font:400 13px/1.5 var(--mono);color:var(--metal)}
.tarjetas{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1px;background:var(--linea);border:1px solid var(--linea);margin:2rem 0}
.tarjetas a{display:block;background:var(--negro);padding:26px 24px;text-decoration:none;color:var(--marfil);transition:background .3s}
.tarjetas a:hover{background:var(--carbon)}
.tarjetas b{display:block;font:400 26px/1.15 var(--serif);margin-bottom:.5rem}
.tarjetas span{color:var(--marfil-2);font-size:15px}
.tarjetas i{display:block;font:500 11px/1 var(--mono);letter-spacing:.14em;color:var(--oro);font-style:normal;margin-bottom:14px}
.boton-fila{display:flex;flex-wrap:wrap;gap:12px;margin:1.6rem 0}

/* tienda vieja */
.productos{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1px;background:var(--linea);border:1px solid var(--linea);margin:2rem 0}
.producto{background:var(--negro);padding:24px;display:flex;flex-direction:column;gap:12px}
.producto h3{font:400 28px/1.1 var(--serif);margin:0}
.producto__precio{font:500 26px/1 var(--mono);margin:.4rem 0 0;display:inline-block}
.producto .prosa{font-size:15px;flex:1}
.producto .btn{align-self:flex-start}

/* formulario */
.formu{margin:3rem 0}
.formu__caja{border:1px solid var(--linea);background:linear-gradient(160deg,var(--carbon),var(--negro));padding:clamp(24px,4vw,44px)}
.formu__t{font:400 clamp(30px,3.4vw,46px)/1.05 var(--serif);margin:0 0 1.4rem}
.campos{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:0 20px}
.campo{margin-bottom:16px}
.campo label{display:block;font:500 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--metal);margin-bottom:6px}
.campo input,.campo select,.campo textarea{width:100%;background:rgba(239,233,221,.04);border:1px solid var(--linea);color:var(--marfil);
  font:400 16px/1.4 var(--sans);padding:12px 14px;border-radius:0}
.campo input:focus,.campo select:focus,.campo textarea:focus{border-color:var(--acento);outline:none}
.campo select option{background:var(--carbon)}
.campo--ck{display:flex;gap:12px;align-items:flex-start}
.campo--ck input{width:20px;height:20px;flex:0 0 auto;margin-top:2px;accent-color:var(--oro)}
.campo--ck label{text-transform:none;letter-spacing:0;font:400 14px/1.5 var(--sans);color:var(--marfil-2)}

/* ------------------------------------------------------------------ pie */
.pie{border-top:1px solid var(--linea);background:var(--carbon);padding:64px 0 calc(28px + env(safe-area-inset-bottom,0px));margin-top:var(--aire);font-size:15px;color:var(--marfil-2)}
.pie__in{width:min(var(--ancho),100% - 40px);margin:auto;display:grid;grid-template-columns:1.3fr 1fr 1.2fr 1fr;gap:36px}
.pie a{color:var(--marfil-2)}
.pie a:hover{color:#fff}
.pie strong{color:var(--marfil)}
.pie__l{list-style:none;padding:0;margin:0}
.pie__l li{margin:.35rem 0}
.marca--pie{margin:0 0 1rem}
.pie__fin{width:min(var(--ancho),100% - 40px);margin:44px auto 0;padding-top:22px;border-top:1px solid var(--linea);font:400 12.5px/1.5 var(--mono);color:var(--metal)}
@media (max-width:900px){.pie__in{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.pie__in{grid-template-columns:1fr}}

/* aparicion al bajar (sin JS nunca se queda oculto: la clase la pone web.js) */
.con-js .aparece{opacity:0;transform:translateY(18px);transition:opacity .8s var(--curva),transform .8s var(--curva)}
.con-js .aparece.visto{opacity:1;transform:none}

/* luz de vela del cursor: tres degradados descentrados, no un circulo */
.vela{position:fixed;left:0;top:0;width:420px;height:520px;margin:-260px 0 0 -210px;pointer-events:none;z-index:40;mix-blend-mode:screen;opacity:0;
  background:radial-gradient(40% 32% at 50% 44%,rgba(255,196,110,.10),transparent 70%),radial-gradient(28% 40% at 46% 58%,rgba(255,160,70,.07),transparent 72%),
  radial-gradient(22% 22% at 56% 40%,rgba(255,236,190,.08),transparent 70%);transition:opacity .6s}
.vela.viva{opacity:1;animation:parpadeo 3.2s ease-in-out infinite}
@keyframes parpadeo{0%,100%{filter:brightness(1)}40%{filter:brightness(1.08)}70%{filter:brightness(.95)}}
@media (hover:none){.vela{display:none}}

/* sin animacion: todo visible y quieto */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .con-js .aparece{opacity:1;transform:none}
  .hero{height:auto}.hero__fijo{position:relative;height:100svh}
  .hero__medio{display:none}.hero__quieta{display:block}
  .hero__b,.hero__gigante,.hero__pista{display:none}
  .ana__escena{height:auto}.ana__fijo{position:relative;height:auto;padding-block:var(--aire)}
  .ana__trozo{display:none}.ana__entera{opacity:1}.pieza{opacity:1}
  .carga{display:none}.vela{display:none}
}