/* SpinalAI v2 — fusión: contenido del sitio original + estética "aurora glass" (ui-ux-pro-max) */
:root{
  --bg:#F2F7FF; --ink:#13223D; --muted:#5B6B85; --brand:#1767CF; --brand-deep:#0F4C9C;
  --mint:#35D6AE; --glass:rgba(255,255,255,.6); --line:rgba(19,34,61,.10);
  --navy:#0F2B55; --navy-2:#0A2F63; --success:#16A34A;
  --display:'Sora',sans-serif; --body:'Inter',sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
:focus-visible{outline:3px solid var(--brand);outline-offset:3px;border-radius:8px}
h1,h2,h3{font-family:var(--display);letter-spacing:-.02em;text-wrap:balance}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}

/* aurora ambiental */
.aurora{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(46px);opacity:.5}
.o1{width:52vmin;height:52vmin;left:-10vmin;top:-8vmin;background:radial-gradient(circle,#BFD8FF,transparent 66%)}
.o2{width:44vmin;height:44vmin;right:-8vmin;top:30vh;background:radial-gradient(circle,#C4F5E6,transparent 66%)}
.o3{width:40vmin;height:40vmin;left:20vw;bottom:-12vmin;background:radial-gradient(circle,#DCD6FF,transparent 66%)}
main{position:relative;z-index:1}

/* nav */
nav{position:fixed;top:0;left:0;right:0;z-index:60;height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;background:rgba(242,247,255,.78);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.7)}
nav .logo{font-family:var(--display);font-weight:800;font-size:20px}
nav .logo b{color:var(--brand)}
nav .right{display:flex;align-items:center;gap:6px}
nav a.item{padding:10px 14px;border-radius:12px;font-size:14px;font-weight:500;color:var(--muted);white-space:nowrap}
nav a.item:hover,nav a.item[aria-current="page"]{background:rgba(23,103,207,.08);color:var(--ink)}
nav a.cta{background:var(--brand);color:#fff;font-weight:600;padding:11px 18px;border-radius:999px;white-space:nowrap}
nav a.cta:hover{background:var(--brand-deep)}
/* Mobile: los links NO se ocultan — tipografía compacta para que TODO entre sin recortes.
   En pantallas muy angostas se oculta el botón "Descargar" (el link "Descargas" queda al lado). */
@media(max-width:640px){
  nav{padding:0 12px;gap:6px}
  nav .logo{font-size:16px}
  nav .right{gap:2px;flex-shrink:1;min-width:0}
  nav a.item{padding:8px 8px;font-size:12.5px}
  nav a.cta{padding:8px 12px;font-size:12.5px}
}
@media(max-width:480px){
  nav a.cta{display:none}
}
@media(max-width:380px){
  nav .logo{font-size:15px}
  nav a.item{padding:8px 6px;font-size:12px}
}

/* Barra de progreso de lectura (JS fija el ancho; sin JS simplemente no aparece) */
.progress{position:fixed;top:64px;left:0;height:3px;width:0;z-index:59;background:linear-gradient(90deg,var(--brand),#39B9F0 55%,var(--mint));border-radius:0 3px 3px 0;pointer-events:none}

/* Aparición al scrollear: SOLO si el JS marcó html.rvon (sin JS todo queda visible)
   y solo si el sistema no pide reducir movimiento. Doctrina anti-fallas. */
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
  html.rvon .rv{opacity:0;transform:translateY(18px);transition:opacity .6s ease-out,transform .6s cubic-bezier(.22,1,.36,1)}
  html.rvon .rv.in{opacity:1;transform:none}
  .orb{will-change:transform}
  .o1{animation:drift1 18s ease-in-out infinite}
  .o2{animation:drift2 22s ease-in-out infinite}
  .o3{animation:drift3 26s ease-in-out infinite}
  @keyframes drift1{0%,100%{transform:translate(0,0)}50%{transform:translate(14px,-16px)}}
  @keyframes drift2{0%,100%{transform:translate(0,0)}50%{transform:translate(-16px,12px)}}
  @keyframes drift3{0%,100%{transform:translate(0,0)}50%{transform:translate(10px,14px)}}
  .faq details[open] p{animation:fadein .35s ease-out}
  @keyframes fadein{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
}

/* héroes */
.hero{padding:130px 0 40px;text-align:center}
.hero h1{font-size:clamp(38px,6.4vw,68px);font-weight:800;line-height:1.05;max-width:18ch;margin:0 auto}
.hero h1 .grad{background:linear-gradient(92deg,var(--brand),#39B9F0 55%,var(--mint));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{margin:20px auto 0;color:var(--muted);font-size:clamp(16px,1.9vw,19px);max-width:52ch}
.hero.small{padding:130px 0 20px}
.hero.small h1{font-size:clamp(34px,5.4vw,56px)}

/* badges tiendas */
.stores{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap;justify-content:center}
.store{display:flex;flex-direction:column;justify-content:center;min-height:56px;padding:8px 22px;border-radius:16px;background:var(--ink);color:#fff;text-align:left;transition:transform .2s,box-shadow .2s}
.store.alt{background:#fff;color:var(--ink);border:1px solid var(--line)}
.store:hover{transform:translateY(-3px);box-shadow:0 14px 30px -12px rgba(19,34,61,.35)}
.store small{font-size:11px;opacity:.75}
.store span{font-weight:600;font-family:var(--display);font-size:16px}
.trial{margin-top:14px;font-size:13.5px;color:var(--muted);text-align:center}

/* teléfono */
.stage{position:relative;max-width:420px;margin:56px auto 0;perspective:1000px}
.phone{position:relative;width:min(300px,74vw);margin:0 auto;aspect-ratio:9/19;background:#fff;border-radius:44px;box-shadow:0 40px 90px -30px rgba(15,76,156,.45),0 0 0 10px rgba(255,255,255,.4);overflow:hidden;will-change:transform;transform:rotateX(8deg);transform-style:preserve-3d}
.phone .screen{position:absolute;inset:10px;border-radius:36px;background:linear-gradient(180deg,#F6F3ED,#FFFDFA);display:flex;flex-direction:column;padding:18px 16px;gap:10px}
.brandrow{display:flex;align-items:center;gap:7px;font-family:var(--display);font-weight:800;font-size:14px}
.brandrow .mini{display:flex;flex-direction:column;gap:2px;align-items:center}
.brandrow .mini s{display:block;height:4px;border-radius:2px;background:var(--brand)}
.brandrow em{font-style:normal}.brandrow em b{color:var(--brand)}
.phone h4{font-family:var(--display);font-size:19px;margin-top:2px}
.plan{background:linear-gradient(120deg,var(--brand),#3F84DC);border-radius:18px;color:#fff;padding:14px;font-size:12px}
.plan b{display:block;font-family:var(--display);font-size:15px;margin:2px 0 8px}
.plan .btn{background:#fff;color:var(--brand);border-radius:10px;text-align:center;font-weight:600;padding:8px;font-size:12px}
.rowc{display:flex;gap:8px}
.chip{flex:1;background:#fff;border:1px solid #EDE6D9;border-radius:14px;padding:10px;font-size:10.5px;color:var(--muted)}
.chip b{display:block;font-family:var(--display);font-size:18px;color:var(--brand)}
.fd{position:absolute;border-radius:999px;background:linear-gradient(120deg,rgba(255,255,255,.95),rgba(255,255,255,.4));border:1px solid rgba(255,255,255,.95);box-shadow:0 16px 36px -16px rgba(19,34,61,.35);will-change:transform}
.f1{width:120px;height:30px;left:-40px;top:16%}
.f2{width:90px;height:24px;right:-26px;top:34%}
.f3{width:140px;height:34px;left:-56px;bottom:22%}
.f4{width:100px;height:26px;right:-40px;bottom:8%}

/* sección vértebras (herencia del sitio original, versión robusta) */
.vert{position:relative;height:230vh;background:linear-gradient(180deg,var(--navy),var(--navy-2) 55%,var(--navy));border-radius:44px;margin:80px 10px 0;overflow:clip}
.vstage{position:sticky;top:0;height:100vh;height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0 22px;text-align:center}
.vstage .eyebrow{font-size:12.5px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:rgba(255,255,255,.6)}
.vstage h2{color:#fff;font-size:clamp(32px,5.4vw,58px);font-weight:800;margin-top:10px}
.vdiscs{display:flex;flex-direction:column;align-items:center;gap:9px;margin-top:44px}
.vdiscs .node{width:22px;height:22px;border-radius:50%;background:var(--success);box-shadow:0 0 24px rgba(22,163,74,.7);will-change:transform,opacity}
.vdiscs .d{height:15px;border-radius:999px;background:linear-gradient(90deg,#fff,#dbe7fb);box-shadow:0 6px 18px -6px rgba(0,0,0,.4);will-change:transform,opacity}
.vstage p.note{margin-top:44px;color:rgba(255,255,255,.75);max-width:44ch;font-size:16px}

/* mazo (tarjetas apiladas) */
.deck{padding:120px 0 20px}
.deck .head{text-align:center;margin-bottom:40px}
.deck h2,.sect h2{font-size:clamp(30px,4.6vw,52px);font-weight:800}
.deck .head p{color:var(--muted);margin-top:8px}
.dcard{position:sticky;top:104px;max-width:760px;margin:0 auto 26vh;background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.85);border-radius:28px;padding:clamp(28px,5vw,48px);box-shadow:0 30px 70px -30px rgba(19,34,61,.4);will-change:transform;transform-origin:50% 0}
.dcard:nth-of-type(2){top:120px}
.dcard:nth-of-type(3){top:136px}
.dcard:last-of-type{margin-bottom:8vh}
.dcard .n{display:inline-flex;align-items:center;gap:8px;font-family:var(--display);font-weight:800;font-size:13px;color:var(--brand);letter-spacing:.08em}
.dcard .n i{display:inline-block;width:26px;height:4px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--mint))}
.dcard h3{font-size:clamp(24px,3.4vw,32px);margin:12px 0 10px}
.dcard p{color:var(--muted);font-size:clamp(15px,1.8vw,17px);max-width:56ch}
.dcard .tag{display:inline-flex;margin-top:18px;padding:8px 16px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(23,103,207,.1);color:var(--brand)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;padding:40px 0 10px}
.stat{text-align:center;background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.85);border-radius:22px;padding:28px 14px}
.stat b{font-family:var(--display);font-weight:800;font-size:clamp(32px,4.4vw,46px);color:var(--brand);font-variant-numeric:tabular-nums}
.stat span{display:block;color:var(--muted);font-size:13.5px;margin-top:4px}

/* secciones genéricas */
.sect{padding:90px 0 10px}
.sect .head{text-align:center;margin-bottom:36px}
.sect .head p{color:var(--muted);margin-top:8px;max-width:60ch;margin-left:auto;margin-right:auto}
.gcards{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.gcard{background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.85);border-radius:22px;padding:28px 24px}
.gcard .n{font-family:var(--display);font-weight:800;font-size:13px;color:var(--brand)}
.gcard h3{font-size:21px;margin:8px 0 8px}
.gcard p{color:var(--muted);font-size:15px}

/* precios */
.prices{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));max-width:820px;margin:0 auto}
.price{background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.85);border-radius:26px;padding:34px 30px}
.price.pro{border:2px solid var(--brand);box-shadow:0 30px 70px -30px rgba(15,76,156,.5);position:relative}
.price.pro::before{content:attr(data-ribbon);position:absolute;top:-13px;left:30px;background:var(--brand);color:#fff;font-size:12px;font-weight:600;padding:4px 14px;border-radius:999px}
.price h3{font-size:22px}
.price .amount{font-family:var(--display);font-weight:800;font-size:42px;color:var(--brand);margin:8px 0 2px}
.price .amount small{font-size:15px;color:var(--muted);font-weight:500}
.price .desc{color:var(--muted);font-size:14.5px;margin-bottom:16px}
.price ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.price li{display:flex;gap:10px;font-size:15px;color:var(--ink)}
.price li::before{content:"✓";color:var(--success);font-weight:700}

/* FAQ */
.faq{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq details{background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.85);border-radius:18px;padding:4px 22px}
.faq summary{cursor:pointer;font-weight:600;font-family:var(--display);font-size:16.5px;padding:16px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;min-height:44px}
.faq summary::after{content:"+";font-size:22px;color:var(--brand);transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--muted);font-size:15.5px;padding-bottom:18px}

/* formulario aviso */
.notify{max-width:560px;margin:0 auto;background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.85);border-radius:26px;padding:34px 30px;text-align:center}
.notify h3{font-size:22px}
.notify p{color:var(--muted);font-size:15px;margin-top:8px}
.notify form{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap;justify-content:center}
.notify input{flex:1;min-width:220px;height:52px;padding:0 18px;border-radius:14px;border:1.5px solid var(--line);background:#fff;font-size:16px;font-family:var(--body)}
.notify input:focus{outline:3px solid rgba(23,103,207,.35);border-color:var(--brand)}
.notify button{height:52px;padding:0 26px;border:0;border-radius:14px;background:var(--brand);color:#fff;font-weight:600;font-size:16px;font-family:var(--body);cursor:pointer}
.notify button:hover{background:var(--brand-deep)}
.platchips{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;max-width:640px;margin:40px auto 0}
.platchips .pc{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;text-align:center}
.platchips .pc b{font-family:var(--display);display:block;font-size:17px}
.platchips .pc span{color:var(--muted);font-size:13px}
.platchips a.pc{display:block;transition:transform .2s,box-shadow .2s}
.platchips a.pc:hover{transform:translateY(-3px);box-shadow:0 16px 32px -16px rgba(19,34,61,.3)}

/* cta + footer */
.cta{margin:110px auto;max-width:860px;text-align:center;background:linear-gradient(140deg,var(--brand),var(--brand-deep));border-radius:32px;padding:60px 26px;color:#fff;box-shadow:0 40px 80px -35px rgba(15,76,156,.55)}
.cta h2{font-size:clamp(28px,4.6vw,46px);font-weight:800}
.cta p{opacity:.85;margin-top:10px}
.cta .stores{justify-content:center}
.cta .store{background:#fff;color:var(--ink)}
footer{border-top:1px solid var(--line);padding:46px 22px 60px;position:relative;z-index:1}
footer .cols{max-width:1080px;margin:0 auto;display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between;align-items:flex-start}
footer .brandcol{max-width:380px}
footer .logo{font-family:var(--display);font-weight:800;font-size:20px}
footer .logo b{color:var(--brand)}
footer .brandcol p{color:var(--muted);font-size:14.5px;margin-top:10px}
footer .links{display:flex;gap:18px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
footer .links a:hover{color:var(--ink)}
footer .legal{max-width:1080px;margin:26px auto 0;color:var(--muted);font-size:13px}

@media (prefers-reduced-motion: reduce){
  .phone{transform:none}
  .dcard{position:static;margin:0 auto 22px}
  .vert{height:auto}
  .vstage{position:static;height:auto;padding:90px 22px}
}

/* selector de idioma (nav, solo desktop — en mobile está la fila del footer) */
select.lang{appearance:none;-webkit-appearance:none;border:1px solid var(--line);background:rgba(255,255,255,.7);border-radius:999px;padding:8px 26px 8px 12px;font:500 13px var(--body);color:var(--muted);cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%235B6B85' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center}
select.lang:hover{color:var(--ink)}
@media(max-width:640px){select.lang{display:none}}
footer .flangs{max-width:1080px;margin:22px auto 0;font-size:13px;color:var(--muted)}
footer .flangs a{padding:2px 4px}
footer .flangs a[aria-current="true"]{color:var(--brand);font-weight:600}
footer .flangs a:hover{color:var(--ink)}
/* aviso discreto de idioma (JS lo inserta; se puede cerrar y no vuelve) */
.langbar{position:fixed;left:50%;transform:translateX(-50%);bottom:18px;z-index:70;display:flex;align-items:center;gap:10px;background:var(--ink);color:#fff;border-radius:999px;padding:10px 16px;font:500 14px var(--body);box-shadow:0 18px 40px -18px rgba(19,34,61,.5);max-width:92vw}
.langbar a{color:#fff;text-decoration:underline;text-underline-offset:3px}
.langbar button{background:none;border:0;color:rgba(255,255,255,.7);font-size:16px;cursor:pointer;padding:2px 4px;line-height:1}
/* teléfono del héroe: contenido extra (trial pill, lista de ejercicios, tendencia) */
.ptrial{align-self:flex-start;background:rgba(23,103,207,.1);color:var(--brand);font-size:9.5px;font-weight:600;border-radius:999px;padding:3px 9px}
.exlist{background:#fff;border:1px solid #EDE6D9;border-radius:14px;padding:9px 12px;font-size:10.5px;color:var(--muted)}
.exlist b{font-family:var(--display);font-size:11px;color:var(--ink);display:block;margin-bottom:2px}
.exrow{display:flex;justify-content:space-between;padding:3px 0;border-top:1px solid #F4EEE4}
.exrow:first-of-type{border-top:0}
.exrow span:last-child{color:var(--brand);font-weight:600}
.trend{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid #EDE6D9;border-radius:14px;padding:8px 12px;font-size:10px;color:var(--muted)}
.tbars{display:flex;align-items:flex-end;gap:2.5px;height:16px;margin-left:auto}
.tbars s{width:5px;border-radius:2px;background:var(--brand);opacity:.45;display:block;text-decoration:none}
.tbars s:last-child{background:var(--success);opacity:1}