/* Soluciones · Stacks y rutinas · Quiz — hoja compartida.
   Sistema «Farmacia suiza» (DESIGN.md): papel, tinta, una gota de rojo; reglas de 1px,
   cero sombras, cero radios; Archivo + IBM Plex Mono. Lo nuevo de estas páginas:
   la fórmula del héroe (péptido + cosmético + plan + seguimiento = solución) y la
   línea de tiempo proporcional al día. */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#0A0A0A; --ink-2:#3D3D3D; --mute:#6E6E73;
  --rule:#111111; --hair:#E2E2E0;
  --paper:#FFFFFF; --bone:#F4F4F1;
  --accent:#BF1E2E; --accent-dk:#8E1622;
  --wa:#25D366;
  --sans:'Archivo',Helvetica,Arial,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,Menlo,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--paper);color:var(--ink);line-height:1.45;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
.wrap{max-width:1320px;margin:0 auto;padding:0 28px}
@media(max-width:640px){.wrap{padding:0 18px}}
.lbl{font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--mute)}
.red{color:var(--accent)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* barra de servicio + nav (idénticas al home) */
.util{background:var(--ink);color:#fff}
.util .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;height:34px;overflow:hidden}
.util .lbl{color:rgba(255,255,255,.78);white-space:nowrap}
.util .lbl b{color:#fff;font-weight:600}
@media(max-width:760px){.util .u-hide{display:none}}
nav{border-bottom:1px solid var(--rule);background:var(--paper);position:sticky;top:0;z-index:60}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:70px;gap:24px}
.mark{font-size:19px;font-weight:800;letter-spacing:-.04em}
.mark span{color:var(--accent)}
.nav-l{display:flex;gap:28px}
.nav-l a{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-2);padding:4px 0;border-bottom:1px solid transparent;transition:color .18s,border-color .18s}
.nav-l a:hover,.nav-l a[aria-current=page]{color:var(--ink);border-bottom-color:var(--accent)}
.nav-cta{border:1px solid var(--rule);padding:11px 18px;font-size:13px;font-weight:600;transition:background .18s,color .18s}
.nav-cta:hover{background:var(--ink);color:#fff}
.burger{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;margin-right:-10px}
.burger span{width:20px;height:1.5px;background:var(--ink);transition:transform .22s var(--ease),opacity .18s}
.burger[aria-expanded=true] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger[aria-expanded=true] span:nth-child(2){opacity:0}
.burger[aria-expanded=true] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
@media(max-width:900px){
  .nav-l{display:none;position:absolute;top:70px;left:0;right:0;flex-direction:column;gap:0;
    background:var(--paper);border-bottom:1px solid var(--rule);padding:0 18px 12px}
  .nav-l.open{display:flex}
  .nav-l a{padding:15px 0;font-size:12px;border-bottom:1px solid var(--hair)}
  .nav-l a:last-child{border-bottom:0}
  .burger{display:flex}
  .nav-cta{display:none}
}

/* titulares y cabeceras de sección */
.eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:22px}
.eyebrow i{display:block;width:26px;height:1px;background:var(--accent)}
section.blk{border-bottom:1px solid var(--rule);padding:84px 0}
@media(max-width:760px){section.blk{padding:52px 0}}
.head{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:end;margin-bottom:44px}
@media(max-width:940px){.head{grid-template-columns:1fr;gap:14px;margin-bottom:28px}}
h2{font-size:clamp(30px,4vw,54px);font-weight:800;letter-spacing:-.045em;line-height:1}
.num{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.num i{display:block;width:22px;height:1px;background:var(--accent)}
.num b{font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.16em;color:var(--accent)}
.head p{font-size:15.5px;color:var(--ink-2);line-height:1.55;max-width:46ch}

/* botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 22px;
  font-size:15px;font-weight:700;letter-spacing:-.01em;border:1px solid var(--rule);transition:background .18s,color .18s,border-color .18s}
.btn:active{transform:scale(.98)}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:var(--accent);border-color:var(--accent)}
.btn-line{background:transparent;color:var(--ink)}
.btn-line:hover{background:var(--ink);color:#fff}
.btn .ar{font-family:var(--mono);font-weight:500;transition:transform .2s var(--ease)}
.btn:hover .ar{transform:translateX(3px)}

/* ═════════════ HÉROE + LA FÓRMULA ═════════════ */
.s-hero{padding:64px 0 0;border-bottom:1px solid var(--rule);overflow:hidden}
.s-hero h1{font-size:clamp(46px,8.2vw,124px);font-weight:800;letter-spacing:-.058em;line-height:.9;max-width:11ch}
.s-hero .lede{font-size:clamp(16px,1.5vw,19px);color:var(--ink-2);line-height:1.5;max-width:52ch;margin-top:26px}
.s-hero .acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.s-top{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:end}
.s-top .spec{min-width:300px;border-top:1px solid var(--rule)}
.spec-row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:12px 0;border-bottom:1px solid var(--hair)}
.spec-k{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--mute);white-space:nowrap}
.spec-v{font-family:var(--mono);font-size:13px;font-weight:500;text-align:right}
@media(max-width:940px){.s-top{grid-template-columns:1fr}.s-top .spec{min-width:0}}

.formula{margin-top:56px;display:grid;grid-template-columns:1fr 34px 1fr 34px 1fr 34px 1fr 34px 1.18fr;
  gap:1px;background:var(--rule);border-top:1px solid var(--rule);margin-left:-28px;margin-right:-28px}
.f-cell{background:var(--paper);padding:22px 22px 24px;display:flex;flex-direction:column;min-height:252px;position:relative}
.f-cell .lbl{display:block}
.f-cell b{display:block;font-size:20px;font-weight:700;letter-spacing:-.03em;line-height:1.15;margin-top:auto}
.f-cell small{display:block;font-size:13.5px;color:var(--ink-2);line-height:1.45;margin-top:6px;max-width:26ch}
.f-fig{flex:1;display:flex;align-items:center;justify-content:center;padding:10px 0;min-height:110px}
.f-fig img{height:118px;width:auto;mix-blend-mode:multiply}
.f-fig .pair{display:flex;align-items:flex-end;gap:2px}
.f-fig .pair img:last-child{height:92px}
.f-op{background:var(--paper);display:flex;align-items:center;justify-content:center;font-family:var(--mono);
  font-size:22px;font-weight:500;color:var(--mute)}
.f-plan{font-family:var(--mono);font-size:11px;letter-spacing:.06em;line-height:1.9;color:var(--ink-2);width:100%;max-width:190px}
.f-plan div{display:flex;justify-content:space-between;border-bottom:1px solid var(--hair)}
.f-plan div span:last-child{color:var(--mute)}
.f-days{font-size:44px;font-weight:800;letter-spacing:-.05em;line-height:1;display:flex;gap:10px;align-items:baseline}
.f-days span{font-family:var(--mono);font-size:14px;color:var(--mute);font-weight:500;letter-spacing:0}
.f-res{background:var(--ink);color:#fff}
.f-res .lbl{color:rgba(255,255,255,.62)}
.f-res b{font-size:30px;letter-spacing:-.045em}
.f-res small{color:rgba(255,255,255,.72)}
.f-res::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--accent);transform:scaleX(1);transform-origin:left}
.f-res .from{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.72);margin-top:14px}
.f-res .from strong{font-family:var(--sans);font-size:26px;font-weight:800;letter-spacing:-.04em;color:#fff;margin-left:6px}
/* entrada orquestada: la suma se escribe en orden, el resultado al final */
.js .formula>*{opacity:0;transform:translateY(14px);transition:opacity .62s var(--ease),transform .62s var(--ease)}
.js .formula .f-op{transform:scale(.6)}
.js .formula.go>*{opacity:1;transform:none}
.js .formula.go>*:nth-child(2){transition-delay:.09s}.js .formula.go>*:nth-child(3){transition-delay:.18s}
.js .formula.go>*:nth-child(4){transition-delay:.27s}.js .formula.go>*:nth-child(5){transition-delay:.36s}
.js .formula.go>*:nth-child(6){transition-delay:.45s}.js .formula.go>*:nth-child(7){transition-delay:.54s}
.js .formula.go>*:nth-child(8){transition-delay:.63s}.js .formula.go>*:nth-child(9){transition-delay:.76s}
.js .formula .f-res::before{transform:scaleX(0);transition:transform .7s var(--ease) 1.2s}
.js .formula.go .f-res::before{transform:scaleX(1)}
@media(max-width:1100px){
  .formula{grid-template-columns:1fr 1fr;margin-left:-28px;margin-right:-28px}
  .f-op{display:none}
  .f-res{grid-column:1/-1;min-height:0}
}
@media(max-width:640px){
  .formula{grid-template-columns:1fr;margin:40px -18px 0}
  .f-op{display:flex;min-height:30px;font-size:17px;justify-content:flex-start;padding-left:18px}
  .f-cell{min-height:0;padding:16px 18px;display:grid;grid-template-columns:112px minmax(0,1fr);grid-template-rows:auto auto 1fr;column-gap:16px}
  .f-cell .lbl{grid-column:2}
  .f-cell b{grid-column:2;margin-top:6px;font-size:18px}
  .f-cell small{grid-column:2;font-size:13px}
  .f-fig{grid-row:1/4;grid-column:1;min-height:0;padding:0;overflow:hidden;justify-content:flex-start}
  .f-fig img{height:84px}.f-fig .pair img{height:66px}.f-fig .pair img:last-child{height:54px}
  /* plan y seguimiento: la figura es texto; va arriba, a lo ancho */
  .f-cell.wide{grid-template-columns:1fr}
  .f-cell.wide .lbl,.f-cell.wide b,.f-cell.wide small{grid-column:1}
  .f-cell.wide .f-fig{grid-row:auto;grid-column:1;order:2;margin:10px 0 2px}
  .f-cell.wide b{order:3}.f-cell.wide small{order:4}
  .f-plan{max-width:none;font-size:10.5px}
  .f-days{font-size:34px}
  .f-res{display:block;padding:20px 18px 22px}
  .f-res b{font-size:26px;margin-top:6px}
}

/* ═════════════ LAS SEIS SOLUCIONES (libro mayor) ═════════════ */
.sols{border-top:1px solid var(--rule)}
.sol{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr) 290px;gap:0;border-bottom:1px solid var(--rule);
  position:relative;transition:background .2s}
.sol::after{content:"";position:absolute;top:-1px;left:0;right:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .34s var(--ease)}
@media(hover:hover){.sol:hover{background:var(--bone)}.sol:hover::after{transform:scaleX(1)}}
.sol-id{padding:30px 32px 30px 0;display:flex;flex-direction:column}
.sol-id .lbl{display:flex;gap:10px;align-items:center}
.sol-id h3{font-size:clamp(30px,3.2vw,46px);font-weight:800;letter-spacing:-.05em;line-height:.95;margin:14px 0 14px}
.sol-id h3 small{display:block;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.14em;
  text-transform:uppercase;color:var(--mute);margin-bottom:10px}
.sol-id p{font-size:15px;color:var(--ink-2);line-height:1.5;max-width:34ch}
.st{display:inline-flex;align-items:center;gap:7px;margin-top:auto;padding-top:18px;font-family:var(--mono);
  font-size:10.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase}
.st i{width:7px;height:7px;background:var(--ink);display:block}
.st.off{color:var(--accent)}
.st.off i{background:transparent;border:1px solid var(--accent)}
.sol-kit{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--hair);
  border-left:1px solid var(--hair);border-right:1px solid var(--hair)}

/* la ficha de cada pieza: foto (o ficha tipográfica si aún no hay foto) + rótulo */
.tile{background:var(--paper);display:flex;flex-direction:column;min-width:0}
.tile-f{aspect-ratio:4/5;background:var(--bone);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.tile-f img{height:84%;width:auto;max-width:92%;object-fit:contain;mix-blend-mode:multiply;transition:transform .5s var(--ease)}
.tile-f.cos img{height:auto;width:88%}
@media(hover:hover){.sol:hover .tile-f img,.bk:hover .tile-f img{transform:scale(1.04)}}
.tile-f.nophoto{flex-direction:column;align-items:flex-start;justify-content:space-between;padding:14px}
.tile-f.nophoto b{font-size:clamp(17px,1.6vw,22px);font-weight:800;letter-spacing:-.04em;line-height:1}
.tile-f.nophoto em{font-style:normal;font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--mute)}
.tile-f.nophoto .mk{font-size:13px;font-weight:800;letter-spacing:-.04em;color:var(--ink-2)}
.tile-f.nophoto .mk span{color:var(--accent)}
.tile-f.ghost{background:repeating-linear-gradient(135deg,var(--bone) 0 9px,#EDEDE9 9px 10px)}
.tile-c{padding:11px 12px 14px;border-top:1px solid var(--hair);flex:1}
.tile-c .lbl{font-size:9.5px;display:block}
.tile-c b{display:block;font-size:13.5px;font-weight:650;font-weight:600;letter-spacing:-.015em;line-height:1.25;margin-top:4px}
.tile-c span{display:block;font-family:var(--mono);font-size:10.5px;color:var(--mute);margin-top:3px;line-height:1.4}

.sol-buy{padding:30px 0 30px 28px;display:flex;flex-direction:column}
.price{font-size:46px;font-weight:800;letter-spacing:-.05em;line-height:.95}
.price small{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.1em;color:var(--mute);margin-left:6px}
.was{font-family:var(--mono);font-size:12px;color:var(--mute);margin-top:12px;line-height:1.6;border-top:1px solid var(--hair);padding-top:10px}
.was s{color:var(--ink-2)}
.save{color:var(--accent);font-weight:600}
.msi{font-family:var(--mono);font-size:11px;color:var(--mute);letter-spacing:.04em}
.sol-buy .btn{margin-top:auto;width:100%}
.sol-buy .fine{font-family:var(--mono);font-size:9.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--mute);text-align:center;margin-top:9px}
.sol-buy .btn+.fine{margin-top:9px}
.sol-buy .spacer{flex:1;min-height:20px}
@media(max-width:1100px){
  .sol{grid-template-columns:1fr 1fr}
  .sol-kit{grid-column:1/-1;grid-row:2;border:0;border-top:1px solid var(--hair)}
  .sol-buy{padding:30px 0 30px 24px}
}
@media(max-width:700px){
  .sol{grid-template-columns:1fr}
  .sol-id{padding:26px 0 18px}
  .sol-id h3{font-size:38px;margin:10px 0 10px}
  .st{padding-top:12px}
  .sol-kit{grid-row:auto;margin:0 -18px}
  .tile-c{padding:9px 9px 12px}
  .tile-c b{font-size:12.5px}
  .tile-c span{font-size:9.5px}
  .tile-f.nophoto{padding:10px}
  .tile-f.nophoto b{font-size:15px}
  .sol-buy{padding:20px 0 28px}
  .price{font-size:40px}
  .sol-buy .spacer{min-height:16px}
}

/* ═════════════ LO QUE PASA DESPUÉS DE PAGAR (proporcional al día) ═════════════ */
.tl{position:relative;height:300px;margin-top:8px}
.tl-rail{position:absolute;left:0;right:0;top:150px;height:1px;background:var(--rule);transform-origin:left}
.tl-stop{position:absolute;top:150px;width:240px}
.tl-stop::before{content:"";position:absolute;left:-5px;top:-5px;width:11px;height:11px;background:var(--ink)}
.tl-stop.end{transform:translateX(-100%);text-align:right}
.tl-stop.end::before{left:auto;right:-5px}
.tl-stop .tl-t{position:absolute;left:0;width:240px}
.tl-stop.end .tl-t{right:0;left:auto}
.tl-stop.dn .tl-t{top:22px}
.tl-stop.up .tl-t{bottom:22px}
.tl-d{font-size:36px;font-weight:800;letter-spacing:-.05em;line-height:1}
.tl-d span{font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--mute);margin-right:8px;vertical-align:.5em}
.tl-t p{font-size:14px;color:var(--ink-2);line-height:1.45;margin-top:6px;max-width:28ch}
.tl-stop.end p{margin-left:auto}
.tl-stop.first::before{background:var(--accent)}
.js .tl .tl-rail{transform:scaleX(0);transition:transform 1.4s var(--ease)}
.js .tl .tl-stop{opacity:0;transition:opacity .5s var(--ease)}
.js .tl.go .tl-rail{transform:scaleX(1)}
.js .tl.go .tl-stop{opacity:1}
@media(max-width:860px){
  .tl{height:auto;padding-left:28px}
  .tl-rail{left:5px;right:auto;top:6px;bottom:6px;width:1px;height:auto;transform-origin:top}
  .js .tl .tl-rail{transform:scaleY(0)}
  .js .tl.go .tl-rail{transform:scaleY(1)}
  .tl-stop,.tl-stop.end{position:relative;top:auto;left:auto!important;width:auto;transform:none;text-align:left;padding-bottom:30px}
  .tl-stop:last-child{padding-bottom:0}
  .tl-stop::before,.tl-stop.end::before{left:-28px;right:auto;top:8px}
  .tl-stop .tl-t,.tl-stop.end .tl-t{position:static;width:auto}
  .tl-stop.end p{margin-left:0}
  .tl-d{font-size:30px}
}

/* lo que incluye: rejilla de filo */
.inc-g{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--rule);border:1px solid var(--rule);margin-top:56px}
.inc-g div{background:var(--paper);padding:18px 18px 20px}
.inc-g b{display:block;font-size:16px;font-weight:700;letter-spacing:-.025em;margin-top:8px;line-height:1.25}
@media(max-width:940px){.inc-g{grid-template-columns:1fr 1fr}.inc-g div:last-child{grid-column:1/-1}}

/* banda del quiz (tinta) */
.qband{background:var(--ink);color:#fff;padding:84px 0}
.qband .wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:end}
.qband h2{color:#fff}
.qband p{font-size:16px;color:rgba(255,255,255,.75);line-height:1.55;max-width:42ch}
.qband .lbl{color:rgba(255,255,255,.6)}
.chips{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(255,255,255,.22);border:1px solid rgba(255,255,255,.22);margin-top:22px}
.chips a{background:var(--ink);color:#fff;padding:15px 16px;font-size:15px;font-weight:600;letter-spacing:-.015em;
  display:flex;justify-content:space-between;align-items:center;gap:10px;transition:background .18s,color .18s}
.chips a span{font-family:var(--mono);font-size:13px;color:rgba(255,255,255,.5);transition:transform .2s var(--ease),color .18s}
.chips a:hover{background:#fff;color:var(--ink)}
.chips a:hover span{color:var(--accent);transform:translateX(3px)}
@media(max-width:860px){.qband{padding:56px 0}.qband .wrap{grid-template-columns:1fr;gap:10px}}

/* enlace cruzado (soluciones ↔ stacks) */
.xlink{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;padding-top:34px;padding-bottom:34px}
.xlink b{font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:-.04em;line-height:1.05}
.xlink p{font-size:14.5px;color:var(--ink-2);margin-top:6px;max-width:58ch}
@media(max-width:700px){.xlink{grid-template-columns:1fr}.xlink .btn{width:100%}}

/* ═════════════ STACKS Y RUTINAS (bundles) ═════════════ */
.filters{display:flex;flex-wrap:wrap;border:1px solid var(--rule);margin-bottom:-1px;background:var(--paper)}
.filters button{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);
  padding:14px 18px;border-right:1px solid var(--rule);transition:background .16s,color .16s}
.filters button:last-child{border-right:0}
.filters button:hover{color:var(--ink);background:var(--bone)}
.filters button[aria-pressed=true]{background:var(--ink);color:#fff}
.filters button span{color:var(--mute);margin-left:6px}
.filters button[aria-pressed=true] span{color:rgba(255,255,255,.6)}
.f-sticky{position:sticky;top:70px;z-index:20;background:var(--paper)}
@media(max-width:640px){.filters{display:grid;grid-template-columns:1fr 1fr}.filters button{border-bottom:1px solid var(--rule)}
  .filters button:nth-child(2n){border-right:0}.filters button:nth-last-child(-n+2){border-bottom:0}}
.grp{margin-top:56px}
.grp:first-of-type{margin-top:0}
.grp-h{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:16px 0 14px;border-bottom:1px solid var(--rule)}
.grp-h h3{font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:-.04em}
.bks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);border-top:0}
.bk{background:var(--paper);display:flex;flex-direction:column;position:relative;transition:background .2s}
.bk::after{content:"";position:absolute;top:-1px;left:0;right:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .34s var(--ease)}
@media(hover:hover){.bk:hover{background:var(--bone)}.bk:hover::after{transform:scaleX(1)}}
.bk-kit{display:grid;gap:1px;background:var(--hair);border-bottom:1px solid var(--hair)}
.bk-kit.n2{grid-template-columns:1fr 1fr}.bk-kit.n3{grid-template-columns:1fr 1fr 1fr}
.bk-kit .tile-f{aspect-ratio:auto;height:228px}
.bk-kit .tile-c{min-height:86px}
.bk-b{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.bk-b .top{display:flex;justify-content:space-between;align-items:center;gap:10px}
.bk-b .st{margin:0;padding:0}
.bk-b h4{font-size:24px;font-weight:800;letter-spacing:-.04em;line-height:1.02;margin:12px 0 8px}
.bk-b .line{font-size:14px;color:var(--ink-2);line-height:1.45}
.bk-b ul{list-style:none;margin:14px 0 0;border-top:1px solid var(--hair)}
.bk-b li{font-family:var(--mono);font-size:11px;letter-spacing:.02em;color:var(--ink-2);padding:7px 0;border-bottom:1px solid var(--hair);
  display:flex;justify-content:space-between;gap:10px}
.bk-b li span:last-child{color:var(--mute);white-space:nowrap}
.bk-b .pr{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 12px;margin-top:18px}
.bk-b .pr .price{font-size:30px}
.bk-b .pr .was{border:0;padding:0;margin:0}
.bk-b .btn{margin-top:16px;width:100%;min-height:48px;font-size:14px}
.bk-b .spacer{flex:1}
.bk[hidden]{display:none}
@media(max-width:1000px){.bks{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.bks{grid-template-columns:1fr}.bk-kit .tile-f{height:178px}.bk-kit .tile-c{min-height:0}}
.empty-cell{background:var(--paper)}
@media(max-width:1000px){.empty-cell.e3{display:none}}

/* nota legal y pie */
.note{font-size:12.5px;color:var(--mute);line-height:1.6;max-width:90ch;padding:28px 0}
footer{background:var(--ink);color:#fff;padding:64px 0 28px}
.f-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.16)}
@media(max-width:860px){.f-top{grid-template-columns:1fr 1fr;gap:28px}}
.f-top h4{margin-bottom:14px}
.f-top .lbl{color:rgba(255,255,255,.55)}
.f-top a{display:block;font-size:14px;color:rgba(255,255,255,.82);padding:5px 0;transition:color .16s}
.f-top a:hover{color:#fff}
.f-brand p{font-size:13.5px;color:rgba(255,255,255,.65);line-height:1.65;max-width:34ch;margin-top:12px}
.f-bot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px}
.f-bot .lbl{color:rgba(255,255,255,.62)}

/* botón flotante de WhatsApp (única forma circular del sistema) */
.fab{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom));z-index:70;width:56px;height:56px;border-radius:50%;
  background:var(--wa);color:#fff;display:flex;align-items:center;justify-content:center;transition:transform .2s var(--ease)}
.fab:hover{transform:scale(1.06)}
.fab svg{width:28px;height:28px}

/* un solo gesto de entrada por scroll */
.js .rv{opacity:0;transform:translateY(14px);transition:opacity .62s var(--ease),transform .62s var(--ease)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
  .js .rv,.js .formula>*,.js .tl .tl-stop{opacity:1;transform:none}
  .js .formula .f-res::before,.js .tl .tl-rail{transform:none}
}