:root{
  --papel:#FAFAF7; --papel-2:#F1F1EB; --tinta:#0B1020; --tinta-2:#2A3142; --gris:#5E6675; --raya:#DADAD2;
  --fuego:#FF4A1C; --bien:#1F8A4C;
  --sans:"Inter","SF Pro Display",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono","JetBrains Mono",Menlo,Consolas,monospace;
  --ancho:68rem; --suave:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--papel);color:var(--tinta);font-family:var(--sans);font-size:1.0625rem;line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit}
::selection{background:var(--fuego);color:#fff}
:focus-visible{outline:2px solid var(--tinta);outline-offset:3px;border-radius:.3rem}
.contenedor{width:min(100% - 2.5rem,var(--ancho));margin-inline:auto}
h1,h2{font-weight:800;letter-spacing:-.04em;line-height:.98;margin:0;text-wrap:balance}
h1{font-size:clamp(2.8rem,8vw,6.2rem)}
h2{font-size:clamp(2rem,4.6vw,3.6rem);line-height:1.02}
h1 i{font-style:normal;color:var(--fuego)}
p{margin:0}

/* Cabecera */
.cabecera{position:sticky;top:0;z-index:20;background:rgba(250,250,247,.86);backdrop-filter:saturate(160%) blur(12px);-webkit-backdrop-filter:saturate(160%) blur(12px)}
.cabecera .contenedor{display:flex;align-items:center;justify-content:space-between;height:4rem}
.marca{display:flex;align-items:center;gap:.6rem;text-decoration:none;font-weight:800;letter-spacing:.3em;font-size:.9rem}
.marca svg{width:1.5rem;height:1.5rem}
.nav{display:flex;gap:1.7rem;align-items:center;font-size:.92rem;color:var(--tinta-2)}
.nav a{text-decoration:none}
.nav a:not(.boton){background:linear-gradient(currentColor,currentColor) 0 100%/0 1px no-repeat;transition:background-size .3s var(--suave);padding-bottom:.15rem}
.nav a:not(.boton):hover{background-size:100% 1px}
@media (max-width:46rem){.nav a:not(.boton){display:none}}
.boton{display:inline-flex;align-items:center;justify-content:center;padding:.85rem 1.4rem;border-radius:99rem;border:0;background:var(--tinta);color:var(--papel);text-decoration:none;font:700 .95rem var(--sans);cursor:pointer;transition:background .25s,transform .25s var(--suave)}
.boton:hover{background:var(--fuego);transform:translateY(-1px)}
.nav .boton{padding:.55rem 1rem;font-size:.86rem;white-space:nowrap}

/* Portada */
.portada{position:relative;min-height:calc(100svh - 4rem);display:flex;align-items:center;overflow:hidden}
.corriente{position:absolute;inset:0;width:100%;height:100%;display:block}
.portada .contenedor{position:relative;padding-block:3rem 9rem}
.bajada{font-size:clamp(1.1rem,1.7vw,1.35rem);color:var(--tinta-2);max-width:31rem;margin:1.6rem 0 2.2rem}
.pista{position:absolute;left:0;right:0;bottom:1.6rem;text-align:center;font-size:.8rem;color:var(--gris);letter-spacing:.04em}
@media (hover:none){.pista{visibility:hidden}.pista::after{content:"Baje para seguir";visibility:visible;position:absolute;left:0;right:0}}

/* Historia: tres pasos en una escena fija */
.historia{height:320vh;position:relative}
.escena{position:sticky;top:4rem;height:calc(100svh - 4rem);display:flex;align-items:center;overflow:hidden}
.escena .contenedor{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.cuenta{font-family:var(--mono);font-size:.85rem;color:var(--gris);margin-bottom:1.6rem}
.cuenta b{color:var(--fuego);font-weight:600}
.pasos{display:grid}
.paso{grid-area:1/1;opacity:0;transform:translateY(1.2rem);transition:opacity .5s var(--suave),transform .5s var(--suave);pointer-events:none}
.paso p{font-size:1.15rem;color:var(--tinta-2);max-width:27rem;margin-top:1.2rem}
[data-paso="0"] .paso:nth-child(1),[data-paso="1"] .paso:nth-child(2),[data-paso="2"] .paso:nth-child(3){opacity:1;transform:none;pointer-events:auto}
.mesa{position:relative;height:26rem;display:grid;place-items:center}
.recibo{width:15.5rem;background:#fff;border-radius:.35rem;padding:1.5rem 1.4rem 1.3rem;font-family:var(--mono);font-size:.84rem;box-shadow:0 1.6rem 3.5rem -1.6rem rgba(11,16,32,.35),0 0 0 1px rgba(11,16,32,.06);transform:rotate(-2.5deg);transition:transform .8s var(--suave)}
.recibo .local{font-family:var(--sans);font-weight:800;letter-spacing:-.01em;font-size:1rem;margin-bottom:1rem}
.linea span{white-space:nowrap}
.linea{display:flex;justify-content:space-between;gap:1rem;padding:.25rem 0;color:var(--tinta-2)}
.linea.total{border-top:1px dashed var(--raya);margin-top:.6rem;padding-top:.7rem;color:var(--tinta);font-weight:700}
.timbre{margin-top:1.1rem;display:grid;gap:.6rem;opacity:0;transform:scale(1.06);transition:opacity .5s .15s,transform .5s .15s var(--suave)}
.timbre i{height:2.3rem;background:repeating-linear-gradient(90deg,var(--tinta) 0 2px,transparent 2px 3px,var(--tinta) 3px 4px,transparent 4px 7px,var(--tinta) 7px 10px,transparent 10px 12px)}
.timbre span{font-family:var(--sans);font-size:.78rem;font-weight:700;color:var(--bien)}
.timbre span::before{content:"✓ "}
.mes{position:absolute;right:0;bottom:1rem;width:14.5rem;background:var(--tinta);color:var(--papel);border-radius:.9rem;padding:1.2rem 1.3rem 1.3rem;opacity:0;transform:translateY(1.5rem);transition:opacity .6s var(--suave),transform .6s var(--suave)}
.mes p{font-size:.8rem;opacity:.7}
.mes b{display:block;font-size:1.9rem;letter-spacing:-.03em;font-variant-numeric:tabular-nums;margin:.2rem 0 .8rem}
.mes small{font-size:.76rem;opacity:.6}
.barra{height:.3rem;border-radius:99rem;background:rgba(127,127,127,.25);overflow:hidden;margin-bottom:.6rem}
.barra i{display:block;height:100%;width:0;border-radius:inherit;background:var(--fuego);transition:width 1.2s var(--suave)}
[data-paso="1"] .recibo,[data-paso="2"] .recibo{transform:rotate(0)}
[data-paso="1"] .timbre,[data-paso="2"] .timbre{opacity:1;transform:none}
[data-paso="2"] .recibo{transform:translate(-4.5rem,-2.5rem) rotate(-4deg) scale(.92)}
[data-paso="2"] .mes{opacity:1;transform:none}
[data-paso="2"] .mes .barra i{width:38%}
@media (max-width:52rem){
  .escena .contenedor{grid-template-columns:1fr;gap:1rem;align-content:center}
  .mesa{height:19rem;order:-1}
  .recibo{width:13.5rem;font-size:.78rem;padding:1.1rem 1.1rem 1rem}
  .mes{width:12.5rem;bottom:0}
  [data-paso="2"] .recibo{transform:translate(-3rem,-2rem) rotate(-4deg) scale(.86)}
  .paso p{font-size:1.05rem;margin-top:.8rem}
  .cuenta{margin-bottom:.8rem}
}

/* Secciones */
section:not(.portada):not(.historia){padding-block:clamp(5rem,12vw,9.5rem)}
.grande{font-size:clamp(1.25rem,2.2vw,1.6rem);line-height:1.35;letter-spacing:-.015em;max-width:36rem}
.letra{font-size:.85rem;color:var(--gris)}

/* Cálculo */
.calculo{background:var(--tinta);color:var(--papel)}
.simulador{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,6vw,5rem);align-items:center;margin-top:clamp(2.5rem,6vw,4.5rem)}
@media (max-width:52rem){.simulador{grid-template-columns:1fr}}
.perillas label{display:block;font-size:1.2rem;color:rgba(250,250,247,.75);margin:0 0 .9rem}
.perillas label+input+label{margin-top:2.4rem}
.perillas output{color:var(--papel);font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:2rem;background:transparent;margin:0;cursor:grab;--p:20%}
input[type=range]:active{cursor:grabbing}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:linear-gradient(90deg,var(--fuego) var(--p),rgba(250,250,247,.25) var(--p))}
input[type=range]::-moz-range-track{height:2px;background:rgba(250,250,247,.25)}
input[type=range]::-moz-range-progress{height:2px;background:var(--fuego)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:1.5rem;height:1.5rem;border-radius:50%;background:var(--papel);margin-top:calc(-.75rem + 1px);box-shadow:0 0 0 0 rgba(255,74,28,.4);transition:box-shadow .25s,transform .25s}
input[type=range]::-moz-range-thumb{width:1.5rem;height:1.5rem;border:0;border-radius:50%;background:var(--papel)}
input[type=range]:hover::-webkit-slider-thumb,input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 .6rem rgba(255,74,28,.28);transform:scale(1.08)}
input[type=range]:focus-visible{outline:none}
.resultado p{font-size:1.2rem;color:rgba(250,250,247,.75)}
.resultado b{display:block;font-size:clamp(2.8rem,7vw,5.2rem);font-weight:800;letter-spacing:-.045em;line-height:1.05;font-variant-numeric:tabular-nums;margin:.3rem 0 1.2rem;white-space:nowrap}
.resultado small{display:block;font-size:.88rem;color:rgba(250,250,247,.6);max-width:24rem}

/* Formas de uso */
.selector{display:inline-flex;gap:.3rem;padding:.3rem;border-radius:99rem;background:var(--papel-2);margin:clamp(2rem,5vw,3.5rem) 0 clamp(2rem,5vw,3.2rem);max-width:100%}
.selector button{border:0;background:transparent;font:600 .95rem var(--sans);color:var(--tinta-2);padding:.75rem 1.2rem;border-radius:99rem;cursor:pointer;white-space:nowrap;transition:background .3s,color .3s}
.selector button[aria-selected=true]{background:var(--tinta);color:var(--papel)}
@media (max-width:30rem){.selector button{padding:.7rem .85rem;font-size:.86rem}}
.forma{animation:llega .5s var(--suave)}
@keyframes llega{from{opacity:0;transform:translateY(.8rem)}}
.forma>p:not(.grande):not(.letra){color:var(--tinta-2);max-width:34rem;margin-top:1rem}
.hilo{display:flex;align-items:center;gap:1rem;margin-top:3rem;font-weight:700;font-size:.95rem;max-width:36rem}
.hilo span{white-space:nowrap}
.hilo .yo{background:var(--tinta);color:var(--papel);padding:.5rem 1rem;border-radius:99rem}
.hilo i{flex:1;height:1px;background:var(--raya);position:relative;overflow:hidden}
.hilo i::after{content:"";position:absolute;inset:0;width:35%;background:var(--fuego);animation:corre 1.8s linear infinite}
.hilo i:last-of-type::after{animation-delay:.9s}
@keyframes corre{from{transform:translateX(-100%)}to{transform:translateX(300%)}}
.buzon{margin:2.5rem 0 .8rem;max-width:36rem;border:1.5px dashed var(--raya);border-radius:1.2rem;padding:2.6rem 1.6rem 2.2rem;text-align:center;cursor:pointer;transition:border-color .25s,background .25s,transform .25s var(--suave)}
.buzon:hover,.buzon.encima{border-color:var(--tinta);background:#fff}
.buzon.encima{transform:scale(1.015)}
.buzon-txt{color:var(--tinta-2)}
.buzon.andando{border-style:solid;border-color:var(--tinta);background:#fff;cursor:progress}
.buzon.andando .buzon-txt{animation:late 1.2s ease-in-out infinite}
@keyframes late{50%{opacity:.45}}
.enlace{border:0;background:none;padding:0;font:inherit;text-align:left;color:var(--tinta);cursor:pointer;text-decoration:underline;text-underline-offset:.2em}
.enlace:hover{color:var(--fuego)}
.lectura{max-width:36rem;margin:1.6rem 0 1.4rem;padding:1.6rem 1.6rem 1.4rem;background:#fff;border-radius:1.2rem;box-shadow:0 1.6rem 3.5rem -2rem rgba(11,16,32,.3),0 0 0 1px rgba(11,16,32,.06);animation:llega .5s var(--suave)}
.lectura p{color:var(--tinta-2)}
.lectura-n{display:block;font-size:clamp(2.2rem,6vw,3.4rem);font-weight:800;letter-spacing:-.04em;line-height:1.1;font-variant-numeric:tabular-nums;color:var(--bien)}
.lectura-no{font-size:1.1rem;font-weight:600;color:var(--tinta) !important}
.lectura h4{margin:1.5rem 0 .5rem;font-size:.8rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--gris)}
.lectura ul{list-style:none;margin:0;padding:0;display:grid;gap:.4rem;font-size:.97rem}
.lectura li{padding-left:1rem;position:relative;overflow-wrap:anywhere}
.lectura li::before{content:"";position:absolute;left:0;top:.62em;width:.35rem;height:.35rem;border-radius:50%;background:var(--fuego)}
.lectura-fin{margin-top:1.5rem;padding-top:1.1rem;border-top:1px solid var(--raya);font-size:.92rem}

/* Estado */
.estado{background:var(--papel-2)}
.estado .grande{margin-top:1.6rem;color:var(--tinta-2)}
.hitos{list-style:none;margin:clamp(2.5rem,5vw,3.5rem) 0 0;padding:0;max-width:46rem}
.hitos li{display:flex;justify-content:space-between;align-items:baseline;gap:.4rem 2rem;flex-wrap:wrap;padding:1.15rem 0;border-top:1px solid var(--raya);font-weight:700;font-size:1.08rem}
.hitos li:last-child{border-bottom:1px solid var(--raya)}
.hitos em{font-style:normal;font-weight:400;font-size:.95rem;color:var(--gris)}
.hitos .hecho em{color:var(--bien);font-weight:600}
.hitos .curso em{color:#C7330C;font-weight:600}

/* Cierre y pie */
.cierre{text-align:center}
.cierre .boton{margin-top:2.2rem}
footer{padding:2rem 0 2.6rem;color:var(--gris);font-size:.88rem;border-top:1px solid var(--raya)}
footer .contenedor{display:flex;flex-wrap:wrap;gap:.8rem 2rem;justify-content:space-between}

/* Consulta de boleta */
.hoja{max-width:32rem;margin-inline:auto;padding-block:clamp(3rem,8vw,6rem)}
.hoja h1{font-size:clamp(2.2rem,5vw,3.2rem)}
.hoja>p{color:var(--tinta-2);margin:1.1rem 0 2.2rem}
.hoja>.boton{margin-top:.5rem}
.formulario label{display:block;font-size:.85rem;font-weight:600;color:var(--tinta-2);margin:1.3rem 0 .45rem}
.formulario label:first-child{margin-top:0}
.formulario input,.formulario select{width:100%;font:inherit;color:var(--tinta);background:#fff;border:1px solid var(--raya);border-radius:.7rem;padding:.85rem .95rem;outline:none;transition:border-color .2s,box-shadow .2s;appearance:none}
.formulario input:focus,.formulario select:focus{border-color:var(--tinta);box-shadow:0 0 0 .22rem rgba(11,16,32,.08)}
.formulario input::placeholder{color:#B4B7BD}
.dos{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
@media (max-width:30rem){.dos{grid-template-columns:1fr}}
.formulario .boton{width:100%;margin-top:1.8rem;padding:1rem}
.formulario .boton[disabled]{opacity:.4;cursor:not-allowed;transform:none;background:var(--tinta)}
.aviso{background:var(--papel-2);border-radius:.7rem;padding:.9rem 1rem;font-size:.95rem}
.ayuda{margin-top:1.6rem !important;color:var(--gris) !important;font-size:.88rem}

/* Aparición */
.aparece{opacity:0;transform:translateY(1.2rem);transition:opacity .8s var(--suave),transform .8s var(--suave)}
.aparece.visto{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .aparece{opacity:1;transform:none}
  .historia{height:auto}
  .escena{position:static;height:auto;padding-block:5rem}
  .pasos{gap:2.5rem}.paso{grid-area:auto;opacity:1;transform:none}
  .timbre,.mes{opacity:1;transform:none}.cuenta,.pista{display:none}
}

/* Página de conexión */
.hoja.ancha{max-width:46rem}
.hoja h2{font-size:1.25rem;letter-spacing:-.02em;margin:2.6rem 0 .8rem}
.aviso.visible{display:block}
pre.codigo{background:var(--tinta);color:var(--papel);border-radius:.8rem;padding:1rem 1.1rem;margin:.7rem 0 .3rem;font:500 .82rem/1.6 ui-monospace,"SF Mono",Menlo,Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere}
.pasos-doc{padding-left:1.2rem;display:grid;gap:1.2rem}
.pasos-doc li::marker{font-weight:800}
.tabla-doc{display:grid;border-top:1px solid var(--raya)}
.tabla-doc div{display:grid;grid-template-columns:13rem 1fr;gap:.2rem 1.2rem;padding:.85rem 0;border-bottom:1px solid var(--raya)}
.tabla-doc code{font:500 .82rem ui-monospace,"SF Mono",Menlo,Consolas,monospace;overflow-wrap:anywhere}
.tabla-doc span{grid-column:2;color:var(--tinta-2);font-size:.92rem}
.garantias{list-style:none;padding:0;display:grid;gap:.9rem}
.garantias li{padding-left:1.1rem;border-left:2px solid var(--fuego)}
.hoja.ancha>.boton{margin-top:2.4rem}
@media (max-width:46rem){.tabla-doc div{grid-template-columns:1fr}.tabla-doc span{grid-column:1}}

/* Textos legales */
.legal h1{margin-bottom:1.2rem}
.legal p,.legal li{color:var(--tinta-2)}
.legal ul{padding-left:1.2rem;display:grid;gap:.45rem;margin:.6rem 0 1rem}
.legal a{color:inherit}
.legal code{font:500 .86em ui-monospace,"SF Mono",Menlo,Consolas,monospace}
footer span a{color:inherit}