/* =====================================================================
   ZIMAS · hoja de estilos
   1) variables  2) base  3) carga  4) menú  5) portada  6) lentes
   7) comparador 8) monturas 9) simulador 10) nosotros 11) contacto
   12) pie  13) responsive
   ===================================================================== */

/* ---------- 1. VARIABLES (cambia los colores aquí) ---------- */
:root{
  --papel:#F1F3F8;
  --papel-2:#E4E8F2;
  --blanco:#FFFFFF;
  --tinta:#12141E;
  --tinta-suave:#575C70;
  --indigo:#4B45E8;
  --indigo-claro:#8E88FF;
  --ambar:#FF9E2C;
  --cian:#159E98;
  --coral:#F06A58;
  --noche:#0C0E18;
  --linea:rgba(18,20,30,.13);
  --radio:20px;
  --radio-l:30px;
  --ancho:1240px;
  --display:'Bricolage Grotesque','Trebuchet MS',system-ui,sans-serif;
  --texto:'Inter Tight','Helvetica Neue',Arial,sans-serif;
  --mono:'JetBrains Mono','Courier New',monospace;
  --sombra:0 18px 50px -28px rgba(18,20,30,.45);
}

/* ---------- 2. BASE ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;color:var(--tinta);
  font-family:var(--texto);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  background:linear-gradient(180deg,#F8FAFF 0%,#EEF2F8 48%,#F7F3ED 100%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--display);font-weight:700;line-height:1.02;letter-spacing:0;margin:0}
p{margin:0}
:focus-visible{outline:2px solid var(--indigo);outline-offset:3px;border-radius:4px}

.env{width:min(100% - 36px,var(--ancho));margin-inline:auto}
/* al llegar desde el menú, la sección no queda tapada por la cabecera */
section[id]{scroll-margin-top:86px}
::selection{background:var(--indigo);color:#fff}
/* grano muy sutil: le da textura al fondo plano */
body::after{
  content:"";position:fixed;inset:0;z-index:700;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='r'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23r)'/%3E%3C/svg%3E");
}
.seccion{padding:clamp(66px,8.5vw,126px) 0;position:relative;overflow:hidden}
.seccion::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.26;
  background:linear-gradient(116deg,transparent 0 42%,rgba(255,255,255,.62) 49%,transparent 56% 100%);
  transform:translateX(-90%);animation:brilloSeccion 16s cubic-bezier(.45,0,.25,1) infinite;
}
.seccion>.env{position:relative;z-index:1}
@keyframes brilloSeccion{
  0%,46%{transform:translateX(-90%)}
  72%,100%{transform:translateX(90%)}
}
.rotulo{
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--indigo);display:inline-flex;align-items:center;gap:9px;margin-bottom:20px;
}
.rotulo::before{content:"";width:26px;height:1px;background:currentColor;display:block;transform-origin:left}
.reveal .rotulo::before{transform:scaleX(0)}
.reveal.visible .rotulo::before{animation:rotuloTrazo .72s .18s cubic-bezier(.16,1,.3,1) forwards}
@keyframes rotuloTrazo{to{transform:scaleX(1)}}
.titulo{font-size:clamp(2.1rem,5.2vw,4rem)}
.entradilla{color:var(--tinta-suave);font-size:clamp(1rem,1.6vw,1.14rem);max-width:56ch;margin-top:18px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 26px;border-radius:100px;border:1px solid transparent;
  font-family:var(--display);font-weight:700;font-size:.96rem;letter-spacing:0;cursor:pointer;
  transition:transform .32s cubic-bezier(.2,.8,.2,1),background .3s,color .3s,box-shadow .32s,border-color .3s;
}
.btn{position:relative;overflow:hidden}
.btn::after{
  content:"";position:absolute;inset:-40% auto -40% -70%;width:48%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.44),transparent);
  transform:skewX(-20deg);transition:left .55s cubic-bezier(.2,.7,.3,1);
}
.btn:hover::after{left:122%}
.btn--lleno{background:var(--tinta);color:#fff}
.btn--lleno:hover{background:var(--indigo);transform:translateY(-3px);box-shadow:0 18px 30px -18px rgba(75,69,232,.75)}
.btn--linea{border-color:rgba(18,20,30,.16);background:rgba(255,255,255,.56);box-shadow:inset 0 0 0 1px rgba(255,255,255,.42)}
.btn--linea:hover{border-color:rgba(75,69,232,.4);background:#fff;color:var(--indigo);transform:translateY(-3px);box-shadow:0 18px 30px -23px rgba(18,20,30,.5)}
.btn--ambar{background:var(--ambar);color:#1a1206}
.btn--ambar:hover{transform:translateY(-2px);box-shadow:0 14px 28px -16px var(--ambar)}
.btn:active{transform:translateY(0) scale(.98)}

.reveal{
  --reveal-x:0px;--reveal-y:28px;--reveal-scale:1;--reveal-delay:0ms;
  opacity:0;transform:translate3d(var(--reveal-x),var(--reveal-y),0) scale(var(--reveal-scale));filter:blur(4px);
  transition:opacity .72s ease,transform .88s cubic-bezier(.16,1,.3,1),filter .68s ease;
  transition-delay:var(--reveal-delay);will-change:opacity,transform,filter;
}
.reveal--left{--reveal-x:-38px;--reveal-y:0px}
.reveal--right{--reveal-x:38px;--reveal-y:0px}
.reveal--scale{--reveal-y:14px;--reveal-scale:.965}
.reveal.visible{opacity:1;transform:translate3d(0,0,0) scale(1);filter:blur(0)}
.reveal[data-split]{opacity:1;transform:none}

/* ---------- 3. PANTALLA DE CARGA ---------- */
#carga{
  position:fixed;inset:0;z-index:9999;background:var(--papel);
  display:grid;place-items:center;animation:cargaFuera .55s 2.8s forwards;
}
#carga.fuera{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .7s ease,visibility .7s}
@keyframes cargaFuera{to{opacity:0;visibility:hidden;pointer-events:none}}
.carga__caja{text-align:center;position:relative}
.carga__aros{position:absolute;inset:-40px 0 auto;display:flex;justify-content:center;pointer-events:none}
.carga__aro{width:120px;height:120px;border:1.5px solid var(--indigo);border-radius:50%;opacity:.35;animation:aroEntra 1.55s cubic-bezier(.2,.7,.3,1) infinite}
.carga__aro:nth-child(2){animation-delay:.15s;border-color:var(--ambar)}
@keyframes aroEntra{
  0%{transform:scale(.5) translateX(-60px);opacity:0}
  40%{opacity:.5}
  70%{transform:scale(1) translateX(0);opacity:.35}
  100%{transform:scale(1.5);opacity:0}
}
.carga__marca{
  font-family:var(--display);font-size:clamp(3rem,11vw,6.6rem);font-weight:800;letter-spacing:0;
  filter:blur(16px);opacity:.2;animation:enfoque .9s .05s cubic-bezier(.2,.7,.3,1) forwards;
}
@keyframes enfoque{60%{filter:blur(3px);opacity:.9}100%{filter:blur(0);opacity:1}}
.carga__pie{font-family:var(--mono);font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:var(--tinta-suave);margin-top:10px}
.carga__barra{width:150px;height:2px;background:var(--linea);margin:22px auto 0;overflow:hidden;border-radius:2px}
.carga__barra i{display:block;height:100%;width:0;background:var(--indigo);animation:cargando 1.05s ease-in-out forwards}
@keyframes cargando{to{width:100%}}

/* ---------- 4. MENÚ ---------- */
.cabecera{
  position:fixed;top:0;left:0;right:0;z-index:900;background:transparent;
  border-bottom:1px solid transparent;padding:18px 0;
  transition:background .4s ease,backdrop-filter .4s ease,border-color .4s ease,padding .4s ease;
}
.cabecera.pegada{
  background:rgba(241,243,248,.68);
  -webkit-backdrop-filter:blur(16px) saturate(1.4);backdrop-filter:blur(16px) saturate(1.4);
  border-bottom-color:var(--linea);padding:10px 0;
}
.cabecera__fila{display:flex;align-items:center;justify-content:space-between;gap:18px}
.marca{display:flex;align-items:center;gap:11px;font-family:var(--display);font-weight:800;font-size:1.3rem;letter-spacing:0}
.marca__ojo{width:30px;height:22px;flex:none;overflow:visible;transform-origin:center;animation:parpadeo 5.6s ease-in-out infinite}
.marca__ojo .iris{transform-box:fill-box;transform-origin:center;animation:mirada 5.6s ease-in-out infinite}
@keyframes parpadeo{
  0%,38%,42%,78%,82%,100%{transform:scaleY(1)}
  40%,80%{transform:scaleY(.45)}
}
@keyframes mirada{
  0%,18%,88%,100%{transform:translateX(0)}
  30%,45%{transform:translateX(2.2px)}
  60%,76%{transform:translateX(-2.2px)}
}

.nav{position:relative;display:flex;align-items:center;gap:2px}
.nav__enlace{
  position:relative;z-index:2;padding:9px 14px;border-radius:100px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.09em;text-transform:uppercase;
  color:var(--tinta-suave);transition:color .3s;
}
.nav__enlace:hover,.nav__enlace.activo{color:var(--tinta)}
.nav__cristal{
  position:absolute;z-index:1;top:50%;left:0;height:36px;width:0;translate:0 -50%;
  border-radius:100px;border:1px solid var(--indigo);
  background:linear-gradient(120deg,rgba(75,69,232,.14),rgba(255,158,44,.14));
  opacity:0;pointer-events:none;
  transition:width .45s cubic-bezier(.2,.8,.25,1),left .45s cubic-bezier(.2,.8,.25,1),opacity .3s;
}
.cabecera__acciones{display:flex;align-items:center;gap:12px}
.btn--nav{padding:11px 20px;font-size:.86rem}

.hamburguesa{
  position:relative;display:none;width:48px;height:48px;border:1px solid rgba(75,69,232,.22);border-radius:50%;
  background:#fff;cursor:pointer;padding:0;place-items:center;
  box-shadow:0 12px 26px -20px rgba(75,69,232,.65);
  transition:background .3s,border-color .3s,transform .25s cubic-bezier(.2,.7,.3,1);
}
.hamburguesa:hover{transform:translateY(-1px);border-color:rgba(75,69,232,.5);background:#fff}
.hamburguesa span{
  position:absolute;left:50%;top:50%;display:block;width:19px;height:2px;border-radius:2px;background:var(--tinta);
  transition:transform .3s cubic-bezier(.2,.7,.3,1),opacity .22s,width .25s,background .25s;
}
.hamburguesa span:first-child{transform:translate(-50%,-8px)}
.hamburguesa span:nth-child(2){width:13px;transform:translate(-50%,-50%)}
.hamburguesa span:last-child{transform:translate(-50%,6px)}
body.menu-abierto .hamburguesa{background:linear-gradient(145deg,var(--indigo),#6D67FF);border-color:transparent}
body.menu-abierto .hamburguesa span{background:#fff}
body.menu-abierto .hamburguesa span:first-child{transform:translate(-50%,-50%) rotate(45deg);width:21px}
body.menu-abierto .hamburguesa span:nth-child(2){opacity:0}
body.menu-abierto .hamburguesa span:last-child{transform:translate(-50%,-50%) rotate(-45deg);width:21px}

.menu-movil{
  position:fixed;inset:0;z-index:880;background:var(--papel);
  display:flex;flex-direction:column;justify-content:flex-start;gap:18px;padding:86px 18px 22px;
  overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .4s ease,transform .4s ease,visibility .4s;
}
body.menu-abierto .menu-movil{opacity:1;visibility:visible;transform:none}
body.menu-abierto{overflow:hidden}
.menu-movil__panel{
  width:min(100%,520px);margin-inline:auto;border:1px solid var(--linea);border-radius:22px;
  background:rgba(255,255,255,.58);padding:14px;box-shadow:0 22px 54px -42px rgba(18,20,30,.65);
}
.menu-movil__rotulo{
  display:block;padding:2px 8px 10px;font-family:var(--mono);font-size:10px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--indigo);
}
.menu-movil a{
  display:flex;align-items:center;gap:12px;font-family:var(--display);font-size:clamp(1.22rem,6.4vw,1.78rem);
  font-weight:700;letter-spacing:0;padding:10px;border-radius:14px;border-bottom:1px solid rgba(18,20,30,.08);
  opacity:0;transform:translateY(14px);transition:background .25s,color .25s,transform .25s;
}
.menu-movil a:hover{background:rgba(75,69,232,.08);color:var(--indigo);transform:translateX(3px)}
.menu-movil a span{
  width:34px;height:26px;border-radius:100px;display:grid;place-items:center;flex:none;
  background:rgba(75,69,232,.1);font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:var(--indigo);
}
.menu-movil__wa{margin-top:8px;background:#25D366!important;color:#08321a!important;border-bottom:0!important}
.menu-movil__wa span{background:rgba(255,255,255,.55)!important;color:#08321a!important}
body.menu-abierto .menu-movil a{animation:entraMenu .5s forwards}
body.menu-abierto .menu-movil a:nth-of-type(1){animation-delay:.06s}
body.menu-abierto .menu-movil a:nth-of-type(2){animation-delay:.12s}
body.menu-abierto .menu-movil a:nth-of-type(3){animation-delay:.18s}
body.menu-abierto .menu-movil a:nth-of-type(4){animation-delay:.24s}
body.menu-abierto .menu-movil a:nth-of-type(5){animation-delay:.3s}
body.menu-abierto .menu-movil a:nth-of-type(6){animation-delay:.36s}
body.menu-abierto .menu-movil a:nth-of-type(7){animation-delay:.42s}
@keyframes entraMenu{to{opacity:1;transform:none}}
.menu-movil__pie{
  width:min(100%,520px);margin:0 auto;font-family:var(--mono);font-size:11px;color:var(--tinta-suave);
  line-height:1.8;padding:0 6px;
}
.menu-movil__pie a{color:var(--indigo);text-decoration:underline;text-underline-offset:3px}

.progreso{position:fixed;top:0;left:0;height:2px;width:0;background:var(--indigo);z-index:950;transition:width .1s linear}

/* ---------- 5. PORTADA ---------- */
.portada{
  padding:clamp(118px,16vw,176px) 0 clamp(46px,6vw,86px);position:relative;overflow:hidden;
  background:
    linear-gradient(116deg,rgba(21,158,152,.07),transparent 31%,rgba(255,255,255,.08) 52%,rgba(240,106,88,.07) 78%,transparent),
    linear-gradient(180deg,rgba(255,255,255,.28),rgba(255,255,255,0));
  background-size:160% 100%,100% 100%;
  animation:fondoOptico 15s ease-in-out infinite alternate;
}
@keyframes fondoOptico{to{background-position:100% 0,0 0}}
.portada::before{
  content:"";position:absolute;inset:-10% -25%;pointer-events:none;opacity:.48;
  background:repeating-linear-gradient(112deg,transparent 0 92px,rgba(75,69,232,.09) 93px 94px,transparent 95px 184px);
  transform:translateX(-4%);animation:lineasOpticas 20s linear infinite;
}
@keyframes lineasOpticas{to{transform:translateX(184px)}}
.portada__halo{
  position:absolute;width:118vw;height:26vw;min-height:230px;
  top:-9vw;right:-38vw;pointer-events:none;filter:blur(34px);opacity:.72;
  background:linear-gradient(120deg,transparent,rgba(21,158,152,.26),rgba(75,69,232,.25),rgba(240,106,88,.2),transparent);
  animation:prisma 12s ease-in-out infinite alternate;
}
@keyframes prisma{to{transform:translate(-52px,24px) rotate(3deg);opacity:.9}}
.portada__rejilla{display:grid;grid-template-columns:.92fr 1.08fr;gap:clamp(28px,4vw,56px);align-items:center;position:relative}
.portada h1{font-size:clamp(2.5rem,6.2vw,4.9rem);letter-spacing:0;text-wrap:balance}
.portada h1 .palabra{display:inline-block;overflow:hidden;vertical-align:bottom}
.portada h1 .palabra i{display:inline-block;font-style:normal;transform:translateY(105%);animation:subePalabra .9s cubic-bezier(.2,.8,.25,1) forwards}
@keyframes subePalabra{to{transform:none}}
.portada h1 em{font-style:normal;color:var(--indigo)}
.portada .rotulo{opacity:0;animation:heroEntra .72s .52s cubic-bezier(.16,1,.3,1) forwards}
.portada .rotulo::before{animation:rotuloTrazo .72s .72s cubic-bezier(.16,1,.3,1) both}
.portada .entradilla{opacity:0;animation:heroEntra .82s .66s cubic-bezier(.16,1,.3,1) forwards}
.portada__acciones{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;opacity:0;animation:heroEntra .82s .8s cubic-bezier(.16,1,.3,1) forwards}
.portada__acciones .btn{min-height:56px;padding-inline:26px}
.portada__datos{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:34px;
  border:1px solid rgba(18,20,30,.11);border-radius:18px;overflow:hidden;
  background:rgba(255,255,255,.52);box-shadow:0 22px 48px -38px rgba(18,20,30,.7);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  opacity:0;animation:heroEntra .86s .94s cubic-bezier(.16,1,.3,1) forwards;
}
.dato{
  position:relative;min-width:0;min-height:96px;padding:18px 20px;overflow:hidden;
  transition:background .3s ease,transform .32s cubic-bezier(.16,1,.3,1);
}
.dato+.dato{border-left:1px solid rgba(18,20,30,.1)}
.dato::before{content:"";display:block;width:28px;height:3px;margin-bottom:12px;border-radius:3px;background:var(--indigo);transform-origin:left;animation:trazoDato .8s 1.12s cubic-bezier(.16,1,.3,1) both}
.dato:nth-child(2)::before{background:var(--cian);animation-delay:1.2s}
.dato:nth-child(3)::before{background:var(--coral);animation-delay:1.28s}
.dato::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;
  background:linear-gradient(120deg,transparent 15%,rgba(255,255,255,.72) 50%,transparent 85%);
  transform:translateX(-105%);transition:opacity .25s;
}
.dato:hover{background:rgba(255,255,255,.9);transform:translateY(-2px)}
.dato:hover::after{opacity:1;animation:brilloDato .7s ease-out}
.dato b{font-family:var(--display);font-size:1.54rem;font-weight:800;display:block;line-height:1;letter-spacing:0;white-space:nowrap}
.dato:first-child b{color:var(--indigo)}
.dato:nth-child(2) b{color:var(--cian)}
.dato:nth-child(3) b{color:var(--coral)}
.dato span{display:block;margin-top:8px;font-family:var(--texto);font-size:.72rem;font-weight:600;line-height:1.2;letter-spacing:0;text-transform:uppercase;color:var(--tinta-suave)}
@keyframes heroEntra{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
@keyframes trazoDato{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes brilloDato{to{transform:translateX(105%)}}

/* trío de lentes de la portada */
.portada__visual{position:relative;justify-self:center;width:100%;max-width:650px;opacity:0;animation:visualEntra 1s .54s cubic-bezier(.16,1,.3,1) forwards}
.portada__visual::before{
  content:"";position:absolute;left:4%;right:4%;top:47%;height:2px;z-index:0;pointer-events:none;
  background:linear-gradient(90deg,transparent,var(--cian) 18%,var(--indigo) 50%,var(--coral) 82%,transparent);
  transform:scaleX(0);transform-origin:center;opacity:.7;animation:ejeOptico 1.2s 1.12s cubic-bezier(.16,1,.3,1) forwards;
}
@keyframes visualEntra{from{opacity:0;transform:translateY(24px) scale(.96)}to{opacity:1;transform:none}}
@keyframes ejeOptico{0%{transform:scaleX(0);opacity:0}70%{opacity:.8}100%{transform:scaleX(1);opacity:.52}}
.trio{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;padding:28px 0 16px}
.cristal-demo{
  position:relative;flex:1 1 0;max-width:238px;text-align:center;
  transition:transform .5s cubic-bezier(.2,.7,.3,1);
}
.cristal-demo+.cristal-demo{margin-left:-7%}
.cristal-demo:nth-child(2){z-index:3;transform:translateY(-18px) scale(1.045)}
.cristal-demo:nth-child(1){z-index:2}
.cristal-demo:nth-child(3){z-index:1}
.cristal-demo:hover{transform:translateY(-28px) scale(1.075);z-index:5}
.cristal-demo__ojo{
  position:relative;display:block;aspect-ratio:1/1;border-radius:50%;overflow:hidden;
  border:3px solid rgba(255,255,255,.9);
  box-shadow:0 20px 40px -22px rgba(18,20,30,.75),inset 0 0 0 1px rgba(18,20,30,.12);
  background:var(--papel-2);
  opacity:0;animation:lenteEntra .95s .64s cubic-bezier(.16,1,.3,1) forwards;
}
.cristal-demo:nth-child(2) .cristal-demo__ojo{animation:lenteEntra .95s .78s cubic-bezier(.16,1,.3,1) forwards,pulsoBlue 5s 2s ease-in-out infinite}
.cristal-demo:nth-child(3) .cristal-demo__ojo{animation-delay:.92s}
@keyframes lenteEntra{from{opacity:0;transform:translateY(28px) scale(.86)}to{opacity:1;transform:none}}
@keyframes pulsoBlue{
  0%,100%{box-shadow:0 20px 40px -22px rgba(18,20,30,.75),inset 0 0 0 1px rgba(18,20,30,.12)}
  50%{box-shadow:0 28px 48px -22px rgba(75,69,232,.58),0 0 0 5px rgba(75,69,232,.07),inset 0 0 0 1px rgba(18,20,30,.12)}
}
.cristal-demo__vista{position:absolute;inset:0;background-image:url(../img/hero-vista.webp);background-size:cover;background-position:46% center;transition:filter .6s ease;animation:escenaViva 12s ease-in-out infinite alternate}
@keyframes escenaViva{to{background-position:54% center;transform:scale(1.035)}}
/* brillo de cristal */
.cristal-demo__ojo::before{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:linear-gradient(128deg,rgba(255,255,255,.6) 0 13%,rgba(255,255,255,0) 34% 62%,rgba(255,255,255,.35) 73%,transparent 84%);
  background-size:180% 180%;animation:reflejoCristal 6.5s 2.8s ease-in-out infinite;
}
.cristal-demo:nth-child(2) .cristal-demo__ojo::before{animation-delay:3.45s}
.cristal-demo:nth-child(3) .cristal-demo__ojo::before{animation-delay:4.1s}
@keyframes reflejoCristal{0%,62%,100%{background-position:100% 100%}78%{background-position:0 0}}
.cristal-demo__ojo::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;transition:background .6s ease}
/* 1· sin filtro */
.cristal-demo--clara .cristal-demo__vista{filter:saturate(1.02)}
/* 2· filtro de luz azul: quita la franja azul, entibia un poco */
.cristal-demo--blue .cristal-demo__vista{filter:sepia(.22) saturate(1.12) hue-rotate(-12deg) brightness(1.03)}
.cristal-demo--blue .cristal-demo__ojo::after{background:linear-gradient(150deg,rgba(255,190,110,.2),rgba(255,158,44,.08))}
/* 3· fotocromático: se oscurece solo (animación suave) */
.cristal-demo--solar .cristal-demo__vista{filter:brightness(.55) contrast(1.1) saturate(.85) sepia(.18);animation:escenaViva 13s ease-in-out infinite alternate,fotocromatico 9s ease-in-out infinite}
.cristal-demo--solar .cristal-demo__ojo::after{background:linear-gradient(150deg,rgba(30,26,40,.35),rgba(12,14,24,.2))}
@keyframes fotocromatico{
  0%,12%{filter:brightness(1.02) contrast(1) saturate(1) sepia(0)}
  38%,72%{filter:brightness(.5) contrast(1.12) saturate(.85) sepia(.2)}
  100%{filter:brightness(1.02) contrast(1) saturate(1) sepia(0)}
}
.cristal-demo__nombre{
  display:block;margin-top:14px;font-family:var(--display);font-weight:700;font-size:1.02rem;letter-spacing:0;
  opacity:0;transform:translateY(10px);animation:nombreLente .65s 1.16s cubic-bezier(.16,1,.3,1) forwards;
}
.cristal-demo__pie{
  display:block;font-family:var(--mono);font-size:10px;letter-spacing:.11em;text-transform:uppercase;color:var(--tinta-suave);
  opacity:0;transform:translateY(8px);animation:nombreLente .65s 1.24s cubic-bezier(.16,1,.3,1) forwards;
}
.cristal-demo:nth-child(2) .cristal-demo__nombre{animation-delay:1.3s}
.cristal-demo:nth-child(2) .cristal-demo__pie{animation-delay:1.38s}
.cristal-demo:nth-child(3) .cristal-demo__nombre{animation-delay:1.44s}
.cristal-demo:nth-child(3) .cristal-demo__pie{animation-delay:1.52s}
@keyframes nombreLente{to{opacity:1;transform:none}}
.cristal-demo--solar .cristal-demo__pie{color:var(--ambar)}
.trio__nota{
  margin-top:22px;text-align:center;font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--tinta-suave);
  opacity:0;animation:notaEntra .75s 1.62s ease forwards;
}
@keyframes notaEntra{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.cinta{border-block:1px solid var(--linea);background:var(--blanco);overflow:hidden;padding:15px 0}
.cinta__pista{display:flex;width:max-content;animation:corre 34s linear infinite}
.cinta:hover .cinta__pista{animation-play-state:paused}
@keyframes corre{to{transform:translateX(-50%)}}
.cinta__grupo{display:flex;align-items:center;gap:34px;padding-right:34px;font-family:var(--mono);font-size:12.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--tinta-suave);white-space:nowrap}
.cinta__grupo b{color:var(--indigo);font-weight:400}

/* ---------- 6. CATÁLOGO DE LENTES ---------- */
.catalogo__cabeza{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap;margin-bottom:clamp(32px,4vw,54px)}
.productos{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:22px}
.producto{
  position:relative;background:var(--blanco);border:1px solid var(--linea);border-radius:var(--radio-l);
  grid-column:span 2;overflow:hidden;display:flex;flex-direction:column;
  transition:transform .5s cubic-bezier(.2,.7,.3,1),box-shadow .5s,border-color .4s;
}
.producto:nth-child(4){grid-column:2/span 2}
.producto::before,.comparador__ficha::before,.guia-lentes__item::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;
  background:linear-gradient(120deg,transparent 0 38%,rgba(255,255,255,.7) 50%,transparent 62% 100%);
  transform:translateX(-110%);transition:opacity .25s;
}
.producto:hover::before,.comparador__ficha:hover::before,.guia-lentes__item:hover::before{
  opacity:1;animation:tarjetaBrillo .82s cubic-bezier(.2,.7,.3,1) forwards;
}
@keyframes tarjetaBrillo{to{transform:translateX(110%)}}
.producto:hover{box-shadow:var(--sombra);border-color:transparent}
.producto--destacado{border-color:var(--ambar)}
.producto__media{position:relative;aspect-ratio:5/4;overflow:hidden;background:var(--papel-2)}
.producto__media img{width:100%;height:100%;object-fit:cover;filter:grayscale(.55) contrast(1.05);transition:filter .7s ease,transform .9s cubic-bezier(.2,.7,.3,1)}
.producto__media::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(75,69,232,.3),rgba(12,14,24,.1));transition:opacity .7s ease}
.producto:hover .producto__media img{filter:none;transform:scale(1.05)}
.producto:hover .producto__media::after{opacity:0}
.producto__media--foto-real{background:#fff}
.producto__media--foto-real img{object-fit:contain;object-position:center;filter:none;padding:10px;background:#fff}
.producto__media--foto-real::after{background:linear-gradient(145deg,rgba(75,69,232,.08),transparent 48%,rgba(21,158,152,.07));opacity:.45;pointer-events:none}
.producto:hover .producto__media--foto-real img{filter:none;transform:scale(1.025)}
.producto__sku{
  position:absolute;top:14px;left:14px;z-index:2;padding:6px 12px;border-radius:100px;
  background:rgba(255,255,255,.92);font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
}
.producto__marca{
  position:absolute;top:14px;right:14px;z-index:2;padding:6px 12px;border-radius:100px;
  background:var(--ambar);color:#1a1206;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;
}
.producto__cuerpo{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1;gap:14px}
.producto h3{font-size:1.6rem}
.producto__sub{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--indigo);margin-top:-8px}
.producto p{color:var(--tinta-suave);font-size:.97rem}
.especificaciones{list-style:none;margin:0;padding:0;border-top:1px solid var(--linea);font-family:var(--mono);font-size:12px}
.especificaciones li{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px solid var(--linea);color:var(--tinta-suave)}
.especificaciones li b{color:var(--tinta);font-weight:500;text-align:right}
.producto__pie{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:14px;padding-top:6px}
.precio{font-family:var(--display);font-size:1.72rem;line-height:1}
.precio small{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--tinta-suave);font-weight:400}
.producto__pie .btn{padding:12px 20px;font-size:.88rem}

/* ---------- 7. COMPARADOR ---------- */
.subseccion-cabeza{max-width:720px;margin-top:clamp(48px,6vw,78px)}
.subseccion-cabeza .rotulo{margin-bottom:12px}
.subseccion-cabeza h3{font-size:clamp(1.55rem,3vw,2.35rem)}
.subseccion-cabeza p{max-width:56ch;margin-top:10px;color:var(--tinta-suave);font-size:.98rem}
.subseccion-cabeza--guia{margin-top:clamp(38px,5vw,62px)}
.comparador{
  margin-top:24px;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:16px;
}
.comparador__ficha{
  position:relative;overflow:hidden;
  background:var(--blanco);border:1px solid var(--linea);border-radius:var(--radio-l);
  padding:24px 24px 22px;display:flex;flex-direction:column;gap:16px;
  transition:transform .35s cubic-bezier(.2,.7,.3,1),box-shadow .35s,border-color .35s;
}
.comparador__ficha:hover{transform:translateY(-4px);box-shadow:0 18px 42px -34px rgba(18,20,30,.75);border-color:rgba(75,69,232,.22)}
.comparador__ficha--destacada{border-color:var(--ambar)}
.comparador__cabeza{display:grid;align-content:start;gap:5px;min-width:0}
.comparador__cabeza h3{font-size:1.28rem;overflow-wrap:anywhere}
.comparador__precio{
  font-family:var(--mono);font-size:.72rem;line-height:1.35;letter-spacing:.1em;
  text-transform:uppercase;color:var(--indigo);white-space:normal;
}
.comparador__lista{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:.95rem}
.comparador__lista li{display:flex;align-items:flex-start;gap:10px;line-height:1.35}
.comparador__lista li::before{
  content:"";flex:none;width:19px;height:19px;border-radius:50%;margin-top:1px;
  background-repeat:no-repeat;background-position:center;background-size:11px;
}
.comparador__lista li.si::before{
  background-color:rgba(75,69,232,.12);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234B45E8' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");
}
.comparador__lista li.no{color:var(--tinta-suave);opacity:.6}
.comparador__lista li.no::before{
  background-color:rgba(18,20,30,.07);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23575C70' stroke-width='3.4' stroke-linecap='round'%3E%3Cpath d='M6 6l12 12M18 6 6 18'/%3E%3C/svg%3E");
}
.comparador__ideal{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--linea);
  font-size:.9rem;color:var(--tinta-suave);
}
.comparador__ideal b{color:var(--tinta);font-weight:600}

.guia-lentes{
  margin-top:20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px;
}
.guia-lentes__item{
  position:relative;overflow:hidden;
  background:rgba(255,255,255,.66);border:1px solid var(--linea);border-radius:var(--radio);
  padding:20px 20px 18px;
  transition:transform .35s cubic-bezier(.2,.7,.3,1),background .35s,border-color .35s;
}
.guia-lentes__item:hover{transform:translateY(-3px);background:#fff;border-color:rgba(75,69,232,.22)}
.guia-lentes__item span{
  display:block;margin-bottom:8px;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--indigo);
}
.guia-lentes__item h3{font-size:1.22rem;margin-bottom:8px}
.guia-lentes__item p{font-size:.94rem;color:var(--tinta-suave)}

/* ---------- 8. CATÁLOGO DE MONTURAS ---------- */
.monturas{
  background:
    linear-gradient(135deg,rgba(228,232,242,.9),rgba(255,255,255,.48)),
    linear-gradient(100deg,rgba(75,69,232,.08),transparent 44%,rgba(255,158,44,.11));
}
.filtros{
  position:relative;display:flex;align-items:center;gap:16px;margin-bottom:28px;padding:12px;
  border:1px solid rgba(75,69,232,.16);border-radius:18px;overflow:hidden;
  background:linear-gradient(135deg,rgba(255,255,255,.82),rgba(75,69,232,.08) 58%,rgba(255,158,44,.12));
  box-shadow:0 18px 40px -32px rgba(18,20,30,.55);
}
.filtros::before{
  content:"";position:absolute;inset:0 auto 0 0;width:5px;background:linear-gradient(180deg,var(--indigo),var(--ambar));
}
.filtros__principal,.filtros__lateral{
  position:relative;display:flex;align-items:center;gap:12px;min-width:0;
}
.filtros__principal{flex:1}
.filtros__lateral{flex:none;margin-left:auto;padding-left:16px;border-left:1px solid rgba(18,20,30,.12)}
.filtros__titulo{
  flex:none;display:inline-flex;align-items:center;min-height:34px;padding:0 12px;border-radius:100px;
  background:rgba(75,69,232,.1);font-family:var(--display);font-size:.9rem;font-weight:700;
  letter-spacing:0;text-transform:none;color:var(--indigo);
}
.filtros__tabs,.filtros__chips{display:flex;flex-wrap:wrap;gap:8px}
.filtro{
  position:relative;padding:10px 15px;border-radius:100px;border:1px solid transparent;background:rgba(255,255,255,.55);cursor:pointer;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--tinta-suave);
  white-space:nowrap;
  transition:transform .22s cubic-bezier(.2,.7,.3,1),background .3s,color .3s,border-color .3s,box-shadow .3s;
}
.filtro:hover{border-color:rgba(75,69,232,.45);color:var(--tinta);transform:translateY(-1px)}
.filtro.activo{color:#fff;box-shadow:0 12px 26px -18px currentColor}
.filtro[data-grupo="tipo"].activo{background:linear-gradient(135deg,var(--indigo),#6D67FF);border-color:transparent}
.filtro[data-grupo="publico"].activo{background:linear-gradient(135deg,var(--ambar),#FFD36E);border-color:transparent;color:#211404}
.filtro--tipo{min-width:112px;min-height:40px}
.filtro--publico{min-width:86px;padding-inline:13px}
.rejilla-monturas{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.montura{
  position:relative;cursor:pointer;
  background:var(--blanco);border:1px solid var(--linea);border-radius:var(--radio);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .45s cubic-bezier(.2,.7,.3,1),box-shadow .45s,opacity .3s,border-color .35s;
}
.montura::before{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;border-radius:inherit;opacity:0;
  background:linear-gradient(135deg,rgba(75,69,232,.22),transparent 28%,transparent 70%,rgba(255,158,44,.22));
  transition:opacity .35s;
}
.montura:hover{transform:translateY(-7px);box-shadow:var(--sombra);border-color:rgba(75,69,232,.2)}
.montura:hover::before{opacity:1;animation:marcoVivo 1.2s ease-out}
@keyframes marcoVivo{
  0%{clip-path:inset(0 100% 100% 0)}
  45%{clip-path:inset(0 0 78% 0)}
  100%{clip-path:inset(0)}
}
.montura:focus-visible{outline:3px solid rgba(75,69,232,.36);outline-offset:4px}
.montura.oculta{display:none}
.montura--entra{animation:monturaEntra .36s cubic-bezier(.2,.7,.3,1)}
@keyframes monturaEntra{from{opacity:0;transform:translateY(12px) scale(.985)}to{opacity:1;transform:none}}
.montura__media{position:relative;aspect-ratio:1/1;overflow:hidden;background:var(--papel-2)}
.montura__media::after{
  content:"Ver 3 fotos";position:absolute;top:12px;right:12px;z-index:2;
  padding:7px 11px;border-radius:100px;background:rgba(255,255,255,.9);color:var(--indigo);
  font-family:var(--mono);font-size:9.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  box-shadow:0 12px 24px -18px rgba(18,20,30,.8);opacity:0;transform:translateY(-5px);
  transition:opacity .28s,transform .28s,background .28s;
}
.montura[data-fotos="2"] .montura__media::after{content:"Ver 2 fotos"}
.montura[data-fotos="1"] .montura__media::after{content:"Ver foto"}
.montura[data-fotos="4"] .montura__media::after{content:"Ver 4 fotos"}
.montura:hover .montura__media::after,.montura:focus-visible .montura__media::after{opacity:1;transform:none}
.montura__media img{width:100%;height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.7,.3,1)}
.montura__media--foto-real{background:#f5f3ef}
.montura__media--foto-real img{object-fit:contain;object-position:center;padding:8px}
.montura:hover .montura__media img{transform:scale(1.06)}
.montura__tipo,.montura__publico{
  position:absolute;top:12px;padding:6px 11px;border-radius:100px;
  font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;
  box-shadow:0 10px 20px -16px rgba(18,20,30,.75);
}
.montura__tipo{left:12px;background:rgba(255,255,255,.92)}
.montura__publico{top:auto;right:12px;bottom:12px;background:rgba(255,255,255,.92);color:var(--tinta)}
.montura[data-tipo="acetato"] .montura__tipo{background:rgba(75,69,232,.92);color:#fff}
.montura[data-tipo="tendencia"] .montura__tipo{background:rgba(255,158,44,.94);color:#1a1206}
.montura[data-tipo="metal"] .montura__tipo{background:rgba(18,20,30,.9);color:#fff}
.montura[data-tipo~="acetato"][data-tipo~="metal"] .montura__tipo{background:linear-gradient(110deg,rgba(75,69,232,.94) 0 48%,rgba(18,20,30,.92) 52% 100%);color:#fff}
.montura[data-tipo~="tendencia"][data-tipo~="acetato"][data-tipo~="metal"] .montura__tipo{background:linear-gradient(110deg,rgba(255,158,44,.96) 0 31%,rgba(75,69,232,.94) 34% 65%,rgba(18,20,30,.92) 68% 100%);color:#fff;font-size:8.5px}
.montura__cuerpo{padding:17px 18px 18px;display:flex;flex-direction:column;gap:6px;flex:1}
.montura h3{font-size:1.32rem;letter-spacing:0}
.montura__detalle{
  font-family:var(--mono);font-size:11.5px;line-height:1.35;letter-spacing:.06em;
  color:var(--tinta-suave);text-transform:uppercase;
}
.montura__pie{margin-top:14px;display:flex;align-items:center;justify-content:flex-end;gap:10px}
.montura__pedir{
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--indigo);
  border-bottom:1px solid transparent;transition:border-color .3s;
}
.montura__pedir:hover{border-bottom-color:var(--indigo)}
.sin-resultados{
  display:none;margin-top:18px;padding:18px 20px;border:1px dashed var(--linea);border-radius:var(--radio);
  background:rgba(255,255,255,.55);font-family:var(--mono);font-size:12px;color:var(--tinta-suave);
}
.sin-resultados.visible{display:block}
.aclaracion{
  margin-top:24px;font-family:var(--mono);font-size:12px;color:var(--tinta-suave);
  display:flex;gap:10px;align-items:flex-start;
}
.aclaracion::before{content:"i";flex:none;width:19px;height:19px;border-radius:50%;border:1px solid var(--indigo);color:var(--indigo);display:grid;place-items:center;font-size:11px;margin-top:2px}

body.modal-abierto{overflow:hidden}
body.modal-abierto .barra-movil{display:none}
.modal-montura{
  position:fixed;inset:0;z-index:950;display:grid;place-items:center;padding:24px;
  pointer-events:none;opacity:0;transition:opacity .28s ease;
}
.modal-montura.abierto{pointer-events:auto;opacity:1}
.modal-montura__fondo{
  position:absolute;inset:0;background:rgba(18,20,30,.48);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.modal-montura__panel{
  position:relative;width:min(1040px,100%);max-height:calc(100vh - 48px);overflow:auto;
  border:1px solid rgba(255,255,255,.55);border-radius:28px;padding:28px;
  background:
    linear-gradient(180deg,rgba(255,255,255,1),rgba(246,247,255,1)),
    #fff;
  box-shadow:0 30px 90px -34px rgba(18,20,30,.75);
  transform:translateY(18px) scale(.98);transition:transform .34s cubic-bezier(.2,.7,.3,1);
}
.modal-montura.abierto .modal-montura__panel{transform:none}
.modal-montura__cerrar{
  position:absolute;top:18px;right:18px;z-index:2;border:0;border-radius:100px;padding:10px 14px;
  background:var(--tinta);color:#fff;cursor:pointer;font-family:var(--mono);font-size:10px;
  letter-spacing:.1em;text-transform:uppercase;
}
.modal-montura__cabeza{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:22px;padding-right:82px}
.modal-montura__cabeza h2{font-size:clamp(2rem,5vw,4.1rem);line-height:.95;margin:10px 0 8px;letter-spacing:0}
.modal-montura__cabeza p{max-width:56ch;color:var(--tinta-suave);font-size:1rem}
.modal-montura__galeria{display:grid;grid-template-columns:64px 1fr;gap:16px;align-items:stretch}
.modal-montura__navegacion{
  position:relative;display:grid;grid-template-rows:auto 1fr auto;gap:12px;align-items:center;justify-items:center;
  min-height:430px;padding:10px 0;border-radius:28px;
  background:linear-gradient(180deg,rgba(75,69,232,.08),rgba(255,255,255,.35),rgba(255,158,44,.1));
  overflow:hidden;
}
.modal-montura__navegacion::before{
  content:"";position:absolute;top:72px;bottom:72px;left:50%;width:2px;transform:translateX(-50%);
  border-radius:99px;background:linear-gradient(180deg,rgba(75,69,232,.18),rgba(75,69,232,.72),rgba(255,158,44,.72));
}
.modal-montura__navegacion::after{
  content:"";position:absolute;left:50%;top:72px;width:10px;height:38px;border-radius:99px;
  background:linear-gradient(180deg,rgba(255,255,255,0),rgba(255,255,255,.9),rgba(255,255,255,0));
  transform:translateX(-50%);animation:railLuz 2.8s cubic-bezier(.45,0,.25,1) infinite;
}
@keyframes railLuz{
  0%{top:72px;opacity:0}
  18%,72%{opacity:.9}
  100%{top:calc(100% - 110px);opacity:0}
}
.modal-montura__flecha,.modal-montura__mini{
  border:0;cursor:pointer;transition:transform .22s cubic-bezier(.2,.7,.3,1),background .25s,color .25s,box-shadow .25s;
}
.modal-montura__flecha{
  position:relative;z-index:2;width:44px;height:44px;margin-inline:auto;border-radius:50%;
  background:rgba(255,255,255,.92);color:var(--tinta);font-size:1.25rem;line-height:1;
  box-shadow:0 14px 30px -22px rgba(18,20,30,.8),inset 0 0 0 1px rgba(18,20,30,.08);
}
.modal-montura__flecha:hover{transform:translateY(-2px);background:var(--tinta);color:#fff}
.modal-montura__flecha--abajo:hover{transform:translateY(2px);background:var(--indigo);color:#fff}
.modal-montura__puntos{position:relative;z-index:2;display:grid;gap:14px;align-content:center}
.modal-montura__mini{
  position:relative;width:42px;height:42px;min-height:0;border-radius:50%;
  background:rgba(255,255,255,.96);color:var(--tinta-suave);
  border:1px solid rgba(18,20,30,.08);font-family:var(--mono);font-size:10px;font-weight:700;letter-spacing:.03em;
  box-shadow:0 10px 22px -20px rgba(18,20,30,.75);
}
.modal-montura__mini span{display:none}
.modal-montura__mini.activo{
  transform:scale(1.15);background:linear-gradient(135deg,var(--indigo),#6D67FF);color:#fff;border-color:transparent;
  box-shadow:0 16px 34px -18px rgba(75,69,232,.95);
}
.modal-montura__mini.activo::after{
  content:"";position:absolute;inset:-7px;border-radius:inherit;border:1px solid rgba(75,69,232,.35);
  animation:puntoRespira 1.35s ease-in-out infinite;
}
@keyframes puntoRespira{
  0%,100%{transform:scale(.9);opacity:.45}
  50%{transform:scale(1.12);opacity:.9}
}
.modal-montura__visor{
  position:relative;overflow:hidden;border-radius:24px;background:linear-gradient(135deg,#EEF1F7,#fff);
  border:1px solid rgba(18,20,30,.08);height:clamp(430px,55vh,560px);box-shadow:0 18px 44px -34px rgba(18,20,30,.75);
}
.modal-montura__visor::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(105deg,transparent 0 38%,rgba(255,255,255,.34) 48%,transparent 58% 100%);
  transform:translateX(-120%);animation:visorBrillo 5.5s ease-in-out infinite;
}
@keyframes visorBrillo{
  0%,58%{transform:translateX(-120%)}
  76%,100%{transform:translateX(120%)}
}
.modal-montura__pista{height:100%;transition:transform .42s cubic-bezier(.2,.7,.3,1)}
.modal-montura__slide{
  position:relative;height:100%;display:grid;place-items:center;padding:18px 18px 98px;
  background:
    linear-gradient(135deg,rgba(75,69,232,.08),transparent 36%),
    linear-gradient(315deg,rgba(255,158,44,.1),transparent 34%),
    #F6F7FB;
}
.modal-montura__slide img{
  width:100%;height:100%;max-height:410px;object-fit:contain;display:block;
  filter:drop-shadow(0 18px 26px rgba(18,20,30,.18));
}
.modal-montura__visor.cambiando .modal-montura__slide img{animation:fotoCambio .42s cubic-bezier(.2,.7,.3,1)}
@keyframes fotoCambio{
  from{opacity:.72;transform:scale(.975)}
  to{opacity:1;transform:scale(1)}
}
.modal-montura__texto{
  position:absolute;left:18px;right:18px;bottom:18px;padding:14px 16px;border-radius:18px;
  background:rgba(255,255,255,.92);box-shadow:0 14px 28px -22px rgba(18,20,30,.8);
}
.modal-montura__texto b{display:block;font-family:var(--display);font-size:1.14rem;margin-bottom:4px}
.modal-montura__texto span{display:block;font-size:.92rem;line-height:1.45;color:var(--tinta-suave)}
.modal-montura__contador{
  position:absolute;top:16px;right:16px;padding:8px 11px;border-radius:100px;background:rgba(18,20,30,.9);color:#fff;
  font-family:var(--mono);font-size:10px;letter-spacing:.08em;z-index:2;
}
.modal-montura__acciones{
  display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:20px;
  padding-top:18px;border-top:1px solid rgba(18,20,30,.1);
}
.modal-montura__acciones p{font-family:var(--mono);font-size:11px;color:var(--tinta-suave)}
.modal-montura__acciones .btn{flex:none}

/* ---------- 9. SIMULADOR UV (fondo claro para ver bien el cambio) ---------- */
.simulador{--uv:.15;background:linear-gradient(180deg,var(--blanco),var(--papel));overflow:hidden}
.simulador__rejilla{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(30px,5vw,60px);align-items:center}
.escena{position:relative;border-radius:var(--radio-l);overflow:hidden;aspect-ratio:16/11;background:var(--papel-2);box-shadow:var(--sombra)}
.escena__foto{
  width:100%;height:100%;object-fit:cover;transition:filter .5s ease;
  filter:brightness(calc(1.12 - var(--uv) * .34)) saturate(calc(1.05 - var(--uv) * .25));
}
.escena__sol{
  position:absolute;top:10%;right:12%;width:130px;height:130px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,241,205,.98),rgba(255,158,44,.55) 45%,transparent 72%);
  opacity:var(--uv);transform:scale(calc(.6 + var(--uv) * .7));transition:opacity .5s ease,transform .5s ease;
}
.escena__gafas{position:absolute;inset:0;display:grid;place-items:center;padding:5% 7%}
.escena__gafas svg{width:100%;max-width:540px;overflow:visible;filter:drop-shadow(0 14px 22px rgba(0,0,0,.35))}
.montura-svg{fill:none;stroke:#20232F;stroke-width:6;stroke-linecap:round}
.cristal-svg{fill:rgba(26,24,34,calc(.03 + var(--uv) * .86));transition:fill .5s ease}
.brillo{fill:#fff;opacity:calc(.45 - var(--uv) * .34);transition:opacity .5s ease}
.escena__estado{
  position:absolute;left:16px;bottom:16px;padding:9px 16px;border-radius:100px;
  background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  display:flex;align-items:center;gap:9px;
}
.escena__estado i{width:8px;height:8px;border-radius:50%;background:var(--ambar);display:block}

.control{display:flex;flex-direction:column;gap:24px}
.control__barra{display:flex;align-items:center;gap:14px}
.control__barra span{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--tinta-suave);white-space:nowrap}
input[type=range]{
  -webkit-appearance:none;appearance:none;flex:1;height:8px;border-radius:100px;
  background:linear-gradient(90deg,#C8CEDD,var(--ambar));outline:none;cursor:pointer;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:30px;height:30px;border-radius:50%;border:0;cursor:grab;
  background:radial-gradient(circle at 35% 30%,#FFE7B8,var(--ambar));
  box-shadow:0 0 0 6px rgba(255,158,44,.22),0 6px 16px rgba(18,20,30,.25);
}
input[type=range]::-moz-range-thumb{
  width:30px;height:30px;border:0;border-radius:50%;cursor:grab;
  background:radial-gradient(circle at 35% 30%,#FFE7B8,var(--ambar));box-shadow:0 0 0 6px rgba(255,158,44,.22);
}
.lecturas{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.lectura{border:1px solid var(--linea);border-radius:16px;padding:15px 17px;background:var(--blanco);min-width:0}
.lectura b{
  display:block;font-family:var(--display);font-size:clamp(1.35rem,2.1vw,1.75rem);
  line-height:1;letter-spacing:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.lectura span{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--tinta-suave)}
.nota{font-family:var(--mono);font-size:11.5px;color:var(--tinta-suave);letter-spacing:.03em}

/* ---------- 9b. CÓMO FUNCIONA (sección oscura) ---------- */
.proceso{background:var(--noche);color:#fff;overflow:hidden}
.proceso::before{
  content:"";position:absolute;inset:-20% -10% auto -10%;height:44%;
  pointer-events:none;filter:blur(34px);opacity:.7;
  background:linear-gradient(105deg,transparent,rgba(75,69,232,.45),rgba(255,158,44,.18),transparent);
  animation:luzProceso 11s ease-in-out infinite alternate;
}
@keyframes luzProceso{to{transform:translateX(10%) rotate(3deg)}}
.proceso .rotulo{color:var(--ambar)}
.proceso .entradilla{color:rgba(255,255,255,.6)}
.proceso__cabeza{
  position:relative;display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap;
  margin-bottom:clamp(34px,4.5vw,58px);
}
.pasos{
  position:relative;list-style:none;margin:0;padding:0;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:0;
}
.paso{
  position:relative;padding:26px 26px 30px;border-left:1px solid rgba(255,255,255,.14);
  transition:transform .35s cubic-bezier(.2,.7,.3,1),background .35s,border-color .35s;
}
.paso::after{
  content:"";position:absolute;left:-1px;top:0;width:2px;height:0;border-radius:2px;
  background:linear-gradient(180deg,var(--ambar),var(--indigo-claro));transition:height .42s cubic-bezier(.2,.7,.3,1);
}
.paso:hover{transform:translateY(-5px);background:rgba(255,255,255,.045);border-left-color:transparent}
.paso:hover::after{height:100%}
.paso:first-child{border-left-color:var(--ambar)}
.paso__num{
  display:block;font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--ambar);margin-bottom:14px;
}
.paso h3{font-size:1.3rem;margin-bottom:10px}
.paso p{color:rgba(255,255,255,.6);font-size:.95rem}

/* ---------- 9c. RESEÑAS Y PREGUNTAS ---------- */
.resenas{background:var(--papel-2)}
.rejilla-resenas{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.resena{
  margin:0;background:var(--blanco);border:1px solid var(--linea);border-radius:var(--radio-l);
  padding:26px 26px 22px;display:flex;flex-direction:column;gap:18px;
  transition:transform .42s cubic-bezier(.16,1,.3,1),box-shadow .42s,border-color .35s;
}
.resena:hover{transform:translateY(-5px);border-color:rgba(75,69,232,.25);box-shadow:0 22px 44px -36px rgba(18,20,30,.72)}
.resena blockquote{margin:0;font-size:1.04rem;line-height:1.5}
.resena blockquote::before{
  content:"";display:block;width:26px;height:2px;background:var(--indigo);margin-bottom:16px;
}
.resena figcaption{margin-top:auto;display:flex;flex-direction:column;gap:2px}
.resena figcaption b{font-family:var(--display);font-size:1rem}
.resena figcaption span{font-family:var(--mono);font-size:10.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--tinta-suave)}

.preguntas{margin-top:clamp(38px,5vw,66px);max-width:820px}
.preguntas__titulo{font-size:clamp(1.4rem,3vw,1.9rem);margin-bottom:18px}
.pregunta{border-top:1px solid var(--linea);border-radius:8px;transition:background .3s ease,box-shadow .3s ease}
.pregunta:last-of-type{border-bottom:1px solid var(--linea)}
.pregunta[open]{background:rgba(255,255,255,.68);box-shadow:inset 3px 0 0 var(--indigo),0 14px 32px -30px rgba(18,20,30,.5)}
.pregunta summary{
  cursor:pointer;list-style:none;padding:18px 52px 18px 16px;position:relative;border-radius:8px;
  font-family:var(--display);font-weight:700;font-size:1.06rem;letter-spacing:0;
  transition:color .25s ease,background .25s ease;
}
.pregunta summary::-webkit-details-marker{display:none}
.pregunta summary::after{
  content:"";position:absolute;right:12px;top:50%;width:28px;height:28px;border-radius:50%;translate:0 -50%;
  border:1px solid rgba(75,69,232,.2);
  background:rgba(255,255,255,.72) no-repeat center/12px url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234B45E8' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
  transition:transform .3s ease,background-color .25s,border-color .25s;
}
.pregunta[open] summary{color:var(--indigo)}
.pregunta[open] summary::after{transform:rotate(135deg);border-color:rgba(75,69,232,.45);background-color:rgba(75,69,232,.09)}
.pregunta summary:hover{background:rgba(255,255,255,.42)}
.pregunta p{padding:0 52px 22px 16px;color:var(--tinta-suave);font-size:.98rem}
.pregunta[open] p{animation:respuestaEntra .4s cubic-bezier(.16,1,.3,1)}
@keyframes respuestaEntra{from{opacity:0;transform:translateY(-7px)}to{opacity:1;transform:none}}

/* ---------- 9d. BARRA DE ACCIÓN EN CELULAR ---------- */
.barra-movil{display:none}

/* ---------- 10. NOSOTROS ---------- */
.nosotros__rejilla{display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(30px,5vw,64px);align-items:center}
.nosotros__media{position:relative;padding-bottom:46px}
.nosotros__foto{border-radius:var(--radio-l);overflow:hidden;aspect-ratio:4/3;box-shadow:var(--sombra)}
.nosotros__foto img{width:100%;height:100%;object-fit:cover;filter:grayscale(.3) contrast(1.05)}
.nosotros__retrato{
  position:absolute;right:-6px;bottom:0;width:40%;max-width:190px;margin:0;
  border-radius:calc(var(--radio) - 2px);overflow:hidden;aspect-ratio:4/5;
  border:5px solid var(--papel);box-shadow:0 20px 40px -26px rgba(18,20,30,.8);
}
.nosotros__retrato img{width:100%;height:100%;object-fit:cover}
.cifras{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:32px 0 28px;padding:22px 0;border-block:1px solid var(--linea)}
.cifra b{font-family:var(--display);font-size:clamp(1.8rem,4vw,2.6rem);line-height:1;display:block}
.cifra span{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--tinta-suave)}
.valores{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.valores li{display:flex;gap:12px;align-items:flex-start;font-size:.98rem;color:var(--tinta-suave)}
.valores li::before{content:"";width:9px;height:9px;border-radius:50%;border:2px solid var(--indigo);margin-top:8px;flex:none}
.valores b{color:var(--tinta);font-weight:600}

/* ---------- 10b. UBICACIÓN ---------- */
.ubicacion{background:var(--blanco);border-block:1px solid var(--linea)}
.ubicacion__cabeza{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  margin-bottom:clamp(30px,4vw,48px);
}
.ubicacion__cabeza .entradilla{max-width:42ch}
.ubicacion__rejilla{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(400px,.92fr);gap:24px;align-items:start}
.ubicacion__mapa{overflow:hidden;align-self:start;border:1px solid var(--linea);border-radius:8px;background:var(--papel-2);min-width:0;transition:transform .5s cubic-bezier(.16,1,.3,1),box-shadow .5s,border-color .4s}
.ubicacion__mapa:hover{transform:translateY(-4px);border-color:rgba(75,69,232,.3);box-shadow:0 26px 54px -38px rgba(18,20,30,.75)}
.ubicacion__mapa iframe{display:block;width:100%;height:420px;border:0;filter:grayscale(.18) contrast(1.03);transition:filter .6s ease}
.ubicacion__mapa:hover iframe{filter:grayscale(0) contrast(1.02)}
.ubicacion__mapa-pie{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 20px;background:var(--blanco);border-top:1px solid var(--linea)}
.ubicacion__mapa-pie div{display:grid;gap:3px}
.ubicacion__mapa-pie div span,.ubicacion__foto small{
  font-family:var(--mono);font-size:10px;line-height:1.35;letter-spacing:.12em;text-transform:uppercase;color:var(--tinta-suave);
}
.ubicacion__mapa-pie b{font-size:1.05rem}
.ubicacion__mapa-pie a{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--indigo);white-space:nowrap}
.ubicacion__mapa-pie a:hover{text-decoration:underline;text-underline-offset:4px}
.ubicacion__referencias{display:flex;flex-direction:column;gap:18px;min-width:0}
.ubicacion__referencias-cabeza{display:grid;gap:10px}
.ubicacion__referencias-cabeza p{color:var(--tinta-suave);font-size:.95rem;max-width:38ch}
.ubicacion__fotos{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;flex:1;min-height:0;align-items:start}
.ubicacion__foto{margin:0;display:flex;flex-direction:column;min-width:0;border:1px solid var(--linea);border-radius:8px;overflow:hidden;background:var(--blanco);transition:transform .42s cubic-bezier(.16,1,.3,1),box-shadow .42s,border-color .35s}
.ubicacion__foto:hover{transform:translateY(-4px);border-color:rgba(75,69,232,.28);box-shadow:0 20px 40px -34px rgba(18,20,30,.7)}
.ubicacion__foto>img{display:block;width:100%;height:clamp(230px,28vw,340px);flex:none;object-fit:cover;border-bottom:1px solid var(--linea);transition:transform .65s cubic-bezier(.16,1,.3,1)}
.ubicacion__foto--frontal>img{object-position:center 35%}
.ubicacion__foto--esquina>img{object-position:center 42%}
.ubicacion__foto:hover>img{transform:scale(1.025)}
.ubicacion__foto-pendiente{position:relative;isolation:isolate;overflow:hidden;min-height:116px;display:grid;place-items:center;background:var(--papel-2);border-bottom:1px dashed var(--linea)}
.ubicacion__foto-pendiente::after{content:"";position:absolute;z-index:-1;left:-15%;right:-15%;top:50%;height:1px;background:rgba(75,69,232,.24);transform:translateX(-75%)}
.ubicacion__foto.visible .ubicacion__foto-pendiente::after{animation:referenciaLinea 3.2s .45s cubic-bezier(.45,0,.25,1) infinite}
.ubicacion__foto--principal .ubicacion__foto-pendiente{min-height:146px}
.ubicacion__foto-pendiente span{font-family:var(--display);font-size:2.4rem;color:rgba(75,69,232,.28);transition:transform .45s cubic-bezier(.16,1,.3,1),color .35s}
.ubicacion__foto:hover .ubicacion__foto-pendiente span{transform:scale(1.08);color:rgba(75,69,232,.5)}
@keyframes referenciaLinea{0%,18%{transform:translateX(-75%);opacity:0}35%{opacity:1}65%,100%{transform:translateX(75%);opacity:0}}
.ubicacion__foto figcaption{display:grid;gap:3px;padding:12px 14px}
.ubicacion__foto figcaption b{font-size:.92rem}

/* ---------- 11. CONTACTO ---------- */
.contacto{background:var(--papel-2)}
.contacto__rejilla{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(30px,5vw,58px);align-items:start}
.tarjeta{position:relative;perspective:1400px;width:100%;max-width:480px;aspect-ratio:1.62/1;background:none;border:0;padding:0;cursor:pointer;display:block}
.tarjeta__giro{position:relative;width:100%;height:100%;transition:transform .8s cubic-bezier(.2,.8,.25,1);transform-style:preserve-3d}
.tarjeta.girada .tarjeta__giro{transform:rotateY(180deg)}
@media (hover:hover){.tarjeta:hover .tarjeta__giro{transform:rotateY(180deg)}}
.tarjeta__cara{
  position:absolute;inset:0;border-radius:var(--radio);padding:24px;
  -webkit-backface-visibility:hidden;backface-visibility:hidden;
  display:flex;flex-direction:column;justify-content:space-between;text-align:left;
  box-shadow:0 24px 50px -30px rgba(18,20,30,.7);
}
.tarjeta__cara--frente{background:linear-gradient(145deg,#1A1D2E,var(--noche));color:#fff;overflow:hidden}
.tarjeta__cara--frente::after{
  content:"";position:absolute;width:230px;height:230px;border-radius:50%;right:-70px;bottom:-90px;
  background:radial-gradient(circle,rgba(75,69,232,.65),transparent 66%);
}
.tarjeta__cara--dorso{background:var(--blanco);border:1px solid var(--linea);transform:rotateY(180deg);color:var(--tinta)}
.tarjeta__dorso-cabeza{display:flex;align-items:center;justify-content:space-between;gap:14px}
.tarjeta__dorso-cabeza span{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--indigo)}
.tarjeta__dorso-cabeza b{font-family:var(--display);font-size:1.05rem}
.tarjeta__marca{font-family:var(--display);font-size:2rem;letter-spacing:0;position:relative;z-index:1}
.tarjeta__oficio{font-family:var(--mono);font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;opacity:.62;position:relative;z-index:1}
.tarjeta__girar{font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;opacity:.5;position:relative;z-index:1}
.tarjeta__lista{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-family:var(--mono);font-size:12px;line-height:1.35}
.tarjeta__lista span{color:var(--tinta-suave);display:block;font-size:10px;letter-spacing:.14em;text-transform:uppercase}

.formulario{background:var(--blanco);border:1px solid var(--linea);border-radius:var(--radio-l);padding:clamp(24px,3.4vw,38px)}
.campo{display:grid;gap:7px;margin-bottom:16px}
.campo label{font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--tinta-suave)}
.campo input,.campo select,.campo textarea{
  width:100%;padding:13px 15px;border:1px solid var(--linea);border-radius:14px;background:var(--papel);
  transition:border-color .3s,background .3s;
}
.campo input:focus,.campo select:focus,.campo textarea:focus{border-color:var(--indigo);background:var(--blanco);outline:none;box-shadow:0 0 0 4px rgba(75,69,232,.09)}
.campo textarea{resize:vertical;min-height:96px}
.dos{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.formulario .btn{width:100%;margin-top:6px}
.aviso{font-family:var(--mono);font-size:11px;color:var(--tinta-suave);margin-top:14px;text-align:center}
.datos-contacto{display:grid;gap:14px;margin-top:26px}
.datos-contacto a,.datos-contacto p{display:flex;gap:12px;align-items:baseline;font-size:.96rem}
.datos-contacto b{font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--tinta-suave);min-width:78px;flex:none}
.datos-contacto a:hover{color:var(--indigo)}

/* ---------- 12. PIE ---------- */
.pie{background:var(--noche);color:rgba(255,255,255,.62);padding:54px 0 32px;font-size:.92rem}
.pie__rejilla{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
.pie .marca{color:#fff}
.pie nav{display:flex;gap:20px;flex-wrap:wrap;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase}
.pie nav a:hover{color:#fff}
.pie__legal{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;color:rgba(255,255,255,.4)}

.flotante{
  position:fixed;right:18px;bottom:18px;z-index:800;width:56px;height:56px;border-radius:50%;
  background:#25D366;display:grid;place-items:center;box-shadow:0 12px 30px -12px rgba(37,211,102,.8);
  transform:scale(0);transition:transform .4s cubic-bezier(.2,.8,.25,1);
}
.flotante.visible{transform:scale(1)}
.flotante:hover{transform:scale(1.08)}

/* Las tarjetas conservan el mismo ritmo de entrada aunque tengan hover propio. */
.reveal.paso,.reveal.producto,.reveal.comparador__ficha,.reveal.guia-lentes__item,
.reveal.montura,.reveal.resena,.reveal.ubicacion__foto{
  transition-property:opacity,transform,filter,box-shadow,border-color,background-color;
  transition-duration:.68s,.78s,.64s,.42s,.35s,.35s;
  transition-timing-function:ease,cubic-bezier(.16,1,.3,1),ease,ease,ease,ease;
  transition-delay:var(--reveal-delay);
}
.reveal.visible{will-change:auto}

@media (hover:none){
  .producto:active,.comparador__ficha:active,.guia-lentes__item:active,.montura:active,.resena:active,.ubicacion__foto:active{transform:scale(.985)}
}

/* ---------- 13. RESPONSIVE ---------- */
@media (max-width:1080px){
  .portada__rejilla,.simulador__rejilla,.nosotros__rejilla,.ubicacion__rejilla,.contacto__rejilla{grid-template-columns:1fr}
  .productos{grid-template-columns:repeat(2,minmax(0,1fr))}
  .producto,.producto:nth-child(4){grid-column:auto}
  .portada__visual{max-width:580px;margin:30px auto 0}
  .simulador__rejilla{gap:30px}
  /* primero se ve la escena, después el control */
  .simulador .escena{order:1}
  .simulador .control{order:2}
  .tarjeta{max-width:480px;margin-inline:auto}
  .nav__enlace{padding:9px 11px}
}
@media (max-width:900px){
  .nav,.cabecera__acciones .btn{display:none}
  .hamburguesa{display:grid}
  .filtros{align-items:flex-start;flex-direction:column}
  .filtros__principal,.filtros__lateral{width:100%;align-items:flex-start}
  .filtros__lateral{margin-left:0;padding-left:0;padding-top:12px;border-left:0;border-top:1px solid rgba(18,20,30,.12)}
  .filtros__titulo{width:auto;padding-top:0}
  .filtros__tabs,.filtros__chips{flex:1}
  .modal-montura{align-items:end;padding:12px}
  .modal-montura__panel{width:100%;max-height:calc(100vh - 24px);border-radius:24px;padding:22px}
  .modal-montura__galeria{grid-template-columns:56px 1fr;gap:10px}
  .modal-montura__navegacion{grid-template-rows:auto 1fr auto;min-height:410px}
  .modal-montura__puntos{display:grid;grid-template-columns:1fr;gap:8px}
  .modal-montura__flecha{width:46px;height:46px}
  .modal-montura__mini{width:46px;height:46px;min-height:0;border-radius:50%}
  .modal-montura__mini span{display:none}
  .modal-montura__visor{height:410px}
}
@media (max-width:760px){
  .comparador,.guia-lentes{grid-template-columns:1fr}
  .comparador__ficha,.guia-lentes__item{width:100%}
  .subseccion-cabeza{margin-top:44px}
  .tarjeta{max-width:480px;aspect-ratio:1.48/1}
  .datos-contacto{max-width:480px;margin-inline:auto}
  .datos-contacto p{display:none}
}
@media (max-width:620px){
  body{font-size:16px}
  .env{width:min(100% - 28px,var(--ancho))}
  .seccion{padding:58px 0}
  .portada{padding:104px 0 34px}
  .titulo{font-size:clamp(1.95rem,7.4vw,2.6rem)}
  .portada h1{font-size:clamp(2.15rem,8.6vw,3rem)}
  .entradilla{font-size:1rem}
  .reveal--left,.reveal--right{--reveal-x:0px;--reveal-y:22px}

  /* portada */
  .portada__acciones{gap:10px}
  .portada__acciones .btn{flex:1 1 100%;padding:15px 20px}
  .portada__datos{grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:26px;border-radius:16px}
  .dato{min-height:94px;padding:15px 12px}
  .dato::before{width:22px;margin-bottom:10px}
  .dato b{font-size:1.28rem}
  .dato span{margin-top:7px;font-size:9.5px;letter-spacing:0}
  .portada__visual{max-width:100%;margin-top:26px}
  .trio{padding:18px 0 10px}
  .cristal-demo{max-width:none}
  .cristal-demo+.cristal-demo{margin-left:-5%}
  .cristal-demo:nth-child(2){transform:translateY(-10px) scale(1.025)}
  .cristal-demo__ojo{border-width:2px}
  .cristal-demo__nombre{font-size:.86rem;margin-top:10px}
  .cristal-demo__pie{font-size:8.5px;letter-spacing:.07em}
  .trio__nota{font-size:10px;margin-top:16px}

  /* cinta */
  .cinta{padding:12px 0}
  .cinta__grupo{gap:22px;padding-right:22px;font-size:11px}

  /* catálogos */
  .catalogo__cabeza{gap:14px;margin-bottom:26px}
  .catalogo__cabeza .entradilla{max-width:100%}
  .productos{grid-template-columns:1fr;gap:16px}
  .producto__cuerpo{padding:20px 20px 22px;gap:12px}
  .producto h3{font-size:1.42rem}
  .producto__pie{flex-wrap:wrap}
  .producto__pie .btn{flex:1 1 100%}
  .rejilla-monturas{grid-template-columns:1fr 1fr;gap:12px}
  .comparador{gap:12px}
  .comparador__ficha{padding:20px 18px 18px;gap:13px}
  .comparador__cabeza h3{font-size:1.16rem}
  .comparador__lista{font-size:.92rem;gap:9px}
  .montura__cuerpo{padding:13px 14px 15px}
  .montura h3{font-size:1.02rem}
  .montura__detalle{font-size:10.5px;letter-spacing:.04em}
  .montura__pie{align-items:center;justify-content:flex-end}
  .montura__media::after{opacity:1;transform:none;top:auto;right:10px;bottom:10px;padding:6px 9px;font-size:8.5px}
  .filtros{gap:10px;margin-bottom:22px;padding:10px;border-radius:16px}
  .filtros__principal,.filtros__lateral{gap:8px}
  .filtros__tabs,.filtros__chips{gap:7px}
  .filtros__titulo{width:max-content;margin-bottom:8px}
  .filtros__principal,.filtros__lateral{display:block}
  .filtro{padding:9px 12px;font-size:10.5px}
  .filtro--tipo{min-width:0;flex:1 1 calc(50% - 7px)}
  .filtro--publico{min-width:0;flex:1 1 calc(50% - 7px)}
  .modal-montura{padding:8px}
  .modal-montura__panel{border-radius:22px;padding:18px 14px calc(18px + env(safe-area-inset-bottom))}
  .modal-montura__cerrar{top:12px;right:12px;padding:9px 11px;font-size:9px}
  .modal-montura__cabeza{display:block;margin-bottom:16px;padding-right:72px}
  .modal-montura__cabeza h2{font-size:2.3rem;line-height:.95}
  .modal-montura__cabeza p{font-size:.95rem}
  .modal-montura__galeria{grid-template-columns:52px 1fr;gap:9px}
  .modal-montura__navegacion{min-height:360px}
  .modal-montura__mini{width:42px;height:42px}
  .modal-montura__visor{height:360px}
  .modal-montura__slide{padding:14px 14px 94px}
  .modal-montura__slide img{max-height:260px}
  .modal-montura__texto{left:12px;right:12px;bottom:12px;padding:11px 12px}
  .modal-montura__texto b{font-size:1rem}
  .modal-montura__texto span{font-size:.84rem}
  .modal-montura__contador{top:12px;right:12px}
  .modal-montura__acciones{display:block;margin-top:14px;padding-top:14px}
  .modal-montura__acciones p{margin-bottom:12px}
  .modal-montura__acciones .btn{width:100%;justify-content:center}

  /* simulador */
  .escena{aspect-ratio:4/3}
  .escena__sol{width:84px;height:84px}
  .escena__estado{left:10px;bottom:10px;padding:7px 12px;font-size:10px}
  .lecturas{grid-template-columns:1fr;gap:8px}
  .lectura{padding:12px 10px}
  .lectura b{font-size:1.28rem}
  .lectura span{font-size:9px;letter-spacing:.06em}
  .control{gap:20px}
  .control__barra span{font-size:9.5px}

  /* nosotros y contacto */
  .cifras{grid-template-columns:repeat(3,1fr);gap:10px;text-align:left}
  .cifra b{font-size:1.5rem}
  .cifra span{font-size:9px;letter-spacing:.06em}
  .nosotros__foto--dupla{max-width:none}
  .tarjeta{aspect-ratio:1.35/1}
  .tarjeta__cara{padding:20px}
  .tarjeta__lista{font-size:11px;gap:7px}
  .ubicacion__cabeza{display:grid;gap:18px}
  .ubicacion__mapa iframe{height:310px}
  .ubicacion__mapa-pie{align-items:flex-start;flex-direction:column;padding:15px 16px}
  .ubicacion__fotos{gap:10px;min-height:0}
  .ubicacion__foto>img{height:230px}
  .ubicacion__foto-pendiente{min-height:102px}
  .ubicacion__foto--principal .ubicacion__foto-pendiente{min-height:130px}
  .ubicacion__foto figcaption{padding:10px 11px}
  .dos{grid-template-columns:1fr;gap:0}
  .formulario{padding:22px 18px}
  .datos-contacto b{min-width:66px;font-size:9.5px}
  .flotante{display:none}
  /* barra fija de acción */
  .barra-movil{
    display:grid;grid-template-columns:1fr 1.4fr;gap:8px;
    position:fixed;left:0;right:0;bottom:0;z-index:820;padding:10px 12px calc(10px + env(safe-area-inset-bottom));
    background:rgba(241,243,248,.88);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-top:1px solid var(--linea);
  }
  .barra-movil__btn{
    display:flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border-radius:100px;
    font-weight:600;font-size:.92rem;
  }
  .barra-movil__btn--linea{border:1px solid var(--tinta);color:var(--tinta)}
  .barra-movil__btn--wa{background:#25D366;color:#08321a}
  .pie{padding:44px 0 96px}

  /* proceso */
  .pasos{grid-template-columns:1fr}
  .paso{padding:20px 0 20px 20px}
  .paso h3{font-size:1.16rem}
  .paso__num{margin-bottom:8px}
  .proceso__cabeza{gap:14px}
  .proceso__cabeza .entradilla{max-width:100%}

  /* reseñas y preguntas */
  .rejilla-resenas{gap:12px}
  .resena{padding:22px 20px 18px;gap:14px}
  .resena blockquote{font-size:1rem}
  .pregunta summary{font-size:1rem;padding:16px 34px 16px 0}
  .pregunta summary{padding:16px 48px 16px 12px}
  .pregunta summary::after{right:10px;width:26px;height:26px}
  .pregunta p{padding:0 38px 18px 12px;font-size:.95rem}
}
@media (prefers-reduced-motion:reduce){
  body,.portada{animation:none}
  .reveal{opacity:1;transform:none;transition:none}
  .portada .rotulo,.portada .entradilla,.portada__acciones,.portada__datos,.portada__visual,.cristal-demo__ojo,.cristal-demo__nombre,.cristal-demo__pie,.trio__nota{opacity:1;transform:none;animation:none}
  .rotulo::before{transform:scaleX(1);animation:none}
  .seccion::before,.portada::before,.portada__visual::before,.cinta__pista,.portada__halo,.carga__aro,.marca__ojo,.marca__ojo .iris,.dato::before,.dato:hover::after,.cristal-demo__ojo::before,.producto:hover::before,.comparador__ficha:hover::before,.guia-lentes__item:hover::before,.montura:hover::before,.proceso::before,.modal-montura__navegacion::after,.modal-montura__mini.activo::after,.modal-montura__visor::before,.modal-montura__visor.cambiando .modal-montura__slide img,.ubicacion__foto-pendiente::after,.pregunta[open] p{animation:none}
  .cristal-demo__vista,.cristal-demo--solar .cristal-demo__vista{animation:none;transform:none}
  html{scroll-behavior:auto}
}