/* Layout: cuaderno de trabajo — fondo de cuadrícula, hojas de ejercicio como tarjetas, columna central de 1120px */
:root{
  --coral:#E63946; --coral-ink:#C22834; --celeste:#2EC4D6; --navy:#1D3557; --sun:#F4D23C;
  --bg:#F6F9FC; --surface:#FFFFFF; --ink:#1D3557; --muted:#52627A; --line:#D9E4EE; --grid:rgba(46,196,214,.14);
  --soft-coral:#FDECEE; --soft-celeste:#E3F7FA; --soft-sun:#FDF6D3;
  --on-accent:#FFFFFF; --bot-disc:#DCEAF8; --hero-card:#FFFFFF;
  --f-display:"Baloo 2", "Trebuchet MS", system-ui, sans-serif;
  --f-body:"Figtree", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-mono:"IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --hero-bg:#13253F; --hero-ink:#F2F7FC; --hero-muted:#B9C8DA;
  --r:14px; --max:1120px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --hero-bg:#0A1424; --bot-disc:#1E3656;
  --coral:#FF5A67; --coral-ink:#FF7A85; --celeste:#45D4E4; --navy:#0B1626; --sun:#F4D23C;
  --bg:#0F1B2D; --surface:#16263D; --ink:#EAF1F8; --muted:#A3B3C6; --line:#2A3D57; --grid:rgba(69,212,228,.08);
  --soft-coral:#3A1F2C; --soft-celeste:#123043; --soft-sun:#352F1A; --hero-card:#1B2E48; color-scheme:dark;}}
:root[data-theme="dark"]{
  --hero-bg:#0A1424; --bot-disc:#1E3656;
  --coral:#FF5A67; --coral-ink:#FF7A85; --celeste:#45D4E4; --navy:#0B1626; --sun:#F4D23C;
  --bg:#0F1B2D; --surface:#16263D; --ink:#EAF1F8; --muted:#A3B3C6; --line:#2A3D57; --grid:rgba(69,212,228,.08);
  --soft-coral:#3A1F2C; --soft-celeste:#123043; --soft-sun:#352F1A; --hero-card:#1B2E48; color-scheme:dark;}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.6;padding-inline:0}
.wrap{max-width:var(--max);margin-inline:auto;padding-inline:20px}
h1,h2,h3{font-family:var(--f-display);line-height:1.08;margin:0;text-wrap:balance;letter-spacing:-.01em}
h1{font-size:clamp(2.4rem,5.4vw,4rem);font-weight:800}
h2{font-size:clamp(1.9rem,3.6vw,2.7rem);font-weight:800}
h3{font-size:1.3rem;font-weight:700}
p{margin:0}
a{color:inherit}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--coral-ink)}
.lead{font-size:1.15rem;color:var(--muted);max-width:60ch}
section{padding-block:clamp(56px,8vw,96px)}
.sec-head{display:grid;gap:12px;margin-bottom:40px;max-width:720px}
:focus-visible{outline:3px solid var(--celeste);outline-offset:3px;border-radius:6px}

/* Buttons */
.btn{white-space:nowrap;display:inline-flex;align-items:center;gap:10px;font:700 1rem/1 var(--f-body);padding:15px 22px;border-radius:999px;border:2px solid transparent;text-decoration:none;cursor:pointer;transition:transform .15s, box-shadow .15s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--coral);color:var(--on-accent);box-shadow:0 6px 0 var(--coral-ink)}
.btn-primary:hover{box-shadow:0 8px 0 var(--coral-ink)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn svg{width:20px;height:20px;flex:none}

/* Header */
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--hero-bg);border-bottom:1px solid #2A3D57;color-scheme:dark;
  --bg:var(--hero-bg);--surface:#16263D;--ink:#EAF1F8;--muted:#B9C8DA;--line:#2A3D57;--coral:#FF5A67;--coral-ink:#FF7A85;--celeste:#45D4E4}
.nav{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:inline-flex;background:#fff;border-radius:12px;padding:6px 10px;flex:none}
.brand img{height:34px;width:auto;display:block}
.nav-links{display:flex;align-items:center;gap:18px;margin-left:auto;font-weight:600;font-size:.95rem}
.nav-links a{white-space:nowrap;text-decoration:none;color:var(--muted)}
.nav-links a:hover{color:var(--ink)}
.nav .btn{padding:11px 18px;font-size:.92rem;box-shadow:0 4px 0 var(--coral-ink)}
@media (max-width:1340px){.nav-links{display:none}.nav .btn{margin-left:auto}}

/* Hero — tablero de misión */
.hero{position:relative;overflow:hidden;color:var(--hero-ink);background:
  radial-gradient(600px 380px at 85% 20%, rgba(46,196,214,.28), transparent 70%),
  radial-gradient(520px 360px at 10% 95%, rgba(230,57,70,.30), transparent 70%),
  linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px) 0 0/32px 32px,
  linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px) 0 0/32px 32px,
  var(--hero-bg);
  padding-block:clamp(48px,7vw,96px) clamp(64px,8vw,110px)}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.hero-side{display:grid;gap:22px;min-width:0;justify-items:center}
.hero-side .hero-strip{width:100%;max-width:440px;margin:0}
.hero-copy{display:grid;gap:24px;min-width:0}
.hero .eyebrow{color:var(--sun);font-family:var(--f-mono);letter-spacing:.14em}
.hero h1{font-size:clamp(2.6rem,6vw,4.6rem);color:#fff}
.hero h1 .hl{color:#FF5A67;background:linear-gradient(var(--sun),var(--sun)) 0 84%/0% .085em no-repeat;-webkit-box-decoration-break:clone;box-decoration-break:clone;animation:draw .9s .3s ease-out forwards}
@keyframes draw{to{background-size:100% .085em}}
@media (prefers-reduced-motion:reduce){.hero h1 .hl{background-size:100% .085em}}
.mission{min-width:0}
.hero .lead{color:var(--hero-muted)}
.hero .lead b{color:#fff;font-weight:700}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:4px}
.hero .btn-ghost{border-color:rgba(255,255,255,.6);color:#fff}
.hero .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{display:inline-flex;align-items:center;gap:8px;font:600 .85rem/1 var(--f-mono);padding:9px 12px;border-radius:8px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.05);color:var(--hero-ink)}
.chip i{width:8px;height:8px;border-radius:2px;background:var(--celeste)}
.chip:nth-child(2) i{background:#FF5A67}.chip:nth-child(3) i{background:var(--sun)}
@media (max-width:880px){.hero-grid{grid-template-columns:1fr}}

/* Tarjeta de misión (interactiva) */
.mission{position:relative;background:var(--hero-card);color:var(--ink);border-radius:20px;padding:22px 22px 24px;box-shadow:10px 10px 0 var(--celeste),0 30px 60px rgba(0,0,0,.35);max-width:440px;justify-self:center;width:100%}
.m-top{display:flex;justify-content:space-between;align-items:center;gap:10px;font:600 .74rem/1.2 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.m-top b{color:var(--coral-ink)}
.xp{display:inline-flex;align-items:center;gap:6px;background:var(--soft-sun);color:var(--ink);padding:6px 9px;border-radius:8px;font-variant-numeric:tabular-nums}
.bar{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin:14px 0 4px}
.bar span{height:8px;border-radius:99px;background:var(--line);transition:background .3s}
.bar span.done{background:var(--celeste)}
.bar span.now{background:repeating-linear-gradient(90deg,var(--sun) 0 8px,transparent 8px 12px),var(--line)}
.m-title{font-family:var(--f-display);font-size:1.45rem;font-weight:800;margin-top:12px}
.m-q{color:var(--muted);font-size:.93rem}
.compare{display:flex;align-items:center;justify-content:center;gap:14px;margin:20px 0 16px}
.dots{display:grid;grid-template-columns:repeat(3,16px);grid-auto-rows:16px;gap:6px;padding:12px;border-radius:12px;background:var(--soft-celeste);min-height:62px;align-content:center}
.dots b{width:16px;height:16px;border-radius:50%;background:var(--celeste)}
.dots.c{background:var(--soft-coral)}.dots.c b{background:var(--coral)}
.dots-wrap{display:grid;justify-items:center;gap:6px;font:800 1.7rem/1 var(--f-display)}
.slot{width:64px;height:64px;border:3px dashed var(--ink);border-radius:14px;display:grid;place-items:center;font:800 2.1rem/1 var(--f-display);color:var(--coral);transition:transform .2s}
.slot.pop{transform:scale(1.12)}
.choices{display:flex;justify-content:center;gap:10px}
.choices button{width:58px;height:52px;border-radius:12px;border:2px solid var(--ink);background:var(--surface);color:var(--ink);font:800 1.6rem/1 var(--f-display);cursor:pointer;box-shadow:0 4px 0 var(--ink);transition:transform .1s}
.choices button:active{transform:translateY(3px);box-shadow:0 1px 0 var(--ink)}
.feedback{min-height:46px;margin-top:14px;text-align:center;font-weight:600;font-size:.93rem;color:var(--muted);padding-inline:44px}
.feedback.ok{color:#1F9D6B}.feedback.retry{color:var(--coral-ink)}
.again{display:block;margin:4px auto 0;font:700 .85rem/1 var(--f-mono);color:var(--ink);background:var(--soft-sun);border:0;border-radius:8px;padding:10px 14px;cursor:pointer}
.mascot{position:absolute;right:-34px;bottom:-44px;width:108px;height:auto;filter:drop-shadow(0 10px 12px rgba(0,0,0,.3));animation:bob 3.2s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-8px)}}
@media (max-width:520px){.mascot{width:78px;right:-8px;bottom:-36px}.feedback{padding-inline:32px}}

/* Cinta de temas */
.ticker{background:#2EC4D6;color:#0B1F38;overflow:hidden;border-block:2px solid rgba(11,31,56,.35)}
.ticker-track{display:flex;gap:0;width:max-content;animation:tick 120s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
.hero-strip{border-radius:12px;border:2px solid rgba(255,255,255,.25);margin-top:4px;max-width:100%;background:#2EC4D6;color:#0B1F38}
.ticker.hero-strip span::after{color:#FFFFFF}
.hero-strip .ticker-track{animation-duration:55s}
.hero-strip span{font-size:.95rem;padding:12px 0}
.ticker span{font:700 1rem/1 var(--f-display);padding:14px 0;white-space:nowrap}
.ticker span::after{content:"✦";margin-inline:18px;color:var(--sun)}
.ticker .lbl{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;background:var(--ink);color:var(--bg);padding:14px 16px;margin-right:18px}
.ticker .lbl::after{content:none}
@keyframes tick{to{transform:translateX(-50%)}}

/* Secuencia de misión */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;counter-reset:st}
.step{position:relative;padding:0 22px 0 0;display:grid;gap:10px;align-content:start;min-width:0}
.step-n{display:flex;align-items:center;gap:12px}
.step-n b{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font:800 1.3rem/1 var(--f-display);border:2px solid var(--ink);background:var(--surface);box-shadow:3px 3px 0 var(--ink);flex:none}
.step-n i{flex:1;height:2px;background:repeating-linear-gradient(90deg,var(--ink) 0 6px,transparent 6px 12px);opacity:.5}
.step:last-child .step-n i{visibility:hidden}
.step .step-n b{background:#2EC4D6;color:#0B1F38}
.step h3{font-size:1.25rem}
.step p{color:var(--muted);font-size:.96rem}
.step .mono{font:600 .72rem/1 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--coral-ink)}
@media (max-width:900px){.steps{grid-template-columns:1fr 1fr;row-gap:32px}.step:nth-child(2) .step-n i{visibility:hidden}}
@media (max-width:520px){.steps{grid-template-columns:1fr}.step-n i{visibility:hidden}}
.quote{margin-top:56px;border-radius:20px;background:var(--ink);color:var(--bg);padding:clamp(28px,5vw,48px);display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center}
.quote .q{font:800 5rem/0.6 var(--f-display);color:var(--coral);padding-top:.35em}
.quote p{font:800 clamp(1.5rem,3.2vw,2.3rem)/1.15 var(--f-display);text-wrap:balance}
.quote small{display:block;margin-top:12px;font:600 .8rem/1.3 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;opacity:.75}
@media (max-width:560px){.quote{grid-template-columns:1fr;gap:6px}}

/* Contrast section */
.vs{display:grid;grid-template-columns:1fr 1fr;gap:0;border:2px solid var(--ink);border-radius:var(--r);overflow:hidden;background:var(--surface)}
.vs-col{padding:28px;display:grid;gap:18px;align-content:start;min-width:0}
.vs-col + .vs-col{border-left:2px solid var(--ink);background:var(--soft-celeste)}
.vs-col h3{display:flex;align-items:center;gap:10px}
.vs-row{display:grid;gap:4px;padding-top:16px;border-top:1px solid var(--line)}
.vs-row strong{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.tag{font:700 .72rem/1 var(--f-body);letter-spacing:.08em;text-transform:uppercase;padding:6px 9px;border-radius:999px}
.tag-grey{background:#1D4E89;color:#FFFFFF}
.tag-coral{background:var(--coral);color:var(--on-accent)}
@media (max-width:760px){.vs{grid-template-columns:1fr}.vs-col + .vs-col{border-left:0;border-top:2px solid var(--ink)}}

/* Pillars */
.pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pillar{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px;display:grid;gap:10px;align-content:start;min-width:0}
.pillar-ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center}
.pillar-ico svg{width:28px;height:28px}
.pillar:nth-child(1) .pillar-ico{background:var(--soft-coral);color:var(--coral)}
.pillar:nth-child(2) .pillar-ico{background:var(--soft-celeste);color:var(--celeste)}
.pillar:nth-child(3) .pillar-ico{background:var(--soft-sun);color:#B8930A}
.pillar:nth-child(4) .pillar-ico{background:var(--soft-celeste);color:var(--ink)}
.pillar p{color:var(--muted);font-size:.97rem}
@media (max-width:980px){.pillars{grid-template-columns:repeat(2,1fr)}}
@media (max-width:540px){.pillars{grid-template-columns:1fr}}

/* Collection */
.coll{background:var(--surface);border-block:1px solid var(--line)}
.tabs{display:inline-flex;gap:6px;padding:6px;border-radius:999px;background:var(--bg);border:1px solid var(--line);margin-bottom:28px}
.tabs button{font:700 .98rem/1 var(--f-body);padding:12px 20px;border-radius:999px;border:0;background:transparent;color:var(--muted);cursor:pointer}
.tabs button[aria-selected="true"]{background:var(--ink);color:var(--bg)}
.grades{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.book{border:2px solid var(--line);border-radius:var(--r);padding:20px;display:grid;grid-template-columns:78px 1fr;gap:16px;align-items:start;background:var(--bg);min-width:0}
.book.live{border-color:var(--ink);background:var(--surface);box-shadow:6px 6px 0 var(--coral)}
.cover{aspect-ratio:3/4;border-radius:8px;display:grid;place-items:center;font:800 1.9rem/1 var(--f-display);color:#fff;position:relative;overflow:hidden;max-width:100%}
.cover small{position:absolute;bottom:6px;left:0;right:0;text-align:center;font:700 .58rem/1 var(--f-body);letter-spacing:.08em;text-transform:uppercase;opacity:.9}
.cover.mat{background:linear-gradient(160deg,var(--celeste),#1A8FA0)}
.cover.com{background:linear-gradient(160deg,var(--coral),#A8202C)}
.cover.soon{filter:saturate(.35);opacity:.6}
.book-info{display:grid;gap:6px;min-width:0}
.book-info h3{font-size:1.15rem}
.book-info p{font-size:.92rem;color:var(--muted)}
.status{justify-self:start;margin-top:4px}
.status.ok{background:#DDF5EA;color:#157A52}
.status.soon{background:var(--line);color:var(--muted)}
.idx-btn{justify-self:start;margin-top:6px;font:700 .9rem/1 var(--f-body);color:var(--coral-ink);background:none;border:0;padding:6px 0;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.index{grid-column:1/-1;border-top:2px dashed var(--line);padding-top:14px;margin-top:4px}
.index ol{margin:0;padding-left:1.4em;columns:2;column-gap:24px;font-size:.9rem;color:var(--muted)}
.index li{break-inside:avoid;padding-block:2px}
.coll-note{margin-top:24px;color:var(--muted);font-size:.95rem}
@media (max-width:980px){.grades{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.grades{grid-template-columns:1fr}.index ol{columns:1}}

/* Directors */
.dir-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.dir-copy{display:grid;gap:18px;min-width:0}
.kit{background:var(--navy);color:#fff;border-radius:18px;padding:30px;display:grid;gap:18px}
:root .kit{--kit-muted:#C7D4E3}
.kit h3{color:#fff}
.kit ul{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.kit li{display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:start;color:var(--kit-muted)}
.kit li b{color:#fff;display:block;font-weight:700}
.kit .n{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.1);display:grid;place-items:center;color:var(--sun)}
.kit .n svg{width:18px;height:18px}
.kit-foot{border-top:1px solid rgba(255,255,255,.15);padding-top:16px;font-size:.95rem;color:var(--kit-muted)}
.kit-foot strong{color:var(--sun);font-family:var(--f-display);font-size:1.6rem;margin-right:6px}
.checks{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.checks li{display:grid;grid-template-columns:26px 1fr;gap:10px}
.checks li::before{content:"";width:22px;height:22px;border-radius:50%;background:var(--coral) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5 9-10'/%3E%3C/svg%3E") center/13px no-repeat;margin-top:3px}
@media (max-width:860px){.dir-grid{grid-template-columns:1fr}}

/* Audiences */
.aud{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.aud-card{border-radius:var(--r);padding:28px;display:grid;gap:12px;align-content:start;min-width:0}
.aud-card:nth-child(1){background:var(--soft-celeste)}
.aud-card:nth-child(2){background:var(--soft-sun)}
.aud-card p{color:var(--muted)}
@media (max-width:700px){.aud{grid-template-columns:1fr}}

/* Name */
.name{display:grid;grid-template-columns:auto 1fr;gap:40px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:clamp(24px,4vw,44px)}
.eq{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--f-display);font-weight:800;font-size:clamp(1.6rem,3.4vw,2.4rem)}
.eq .part{display:grid;justify-items:center;line-height:1}
.eq .part small{font:600 .8rem/1.3 var(--f-body);color:var(--muted);margin-top:6px}
.eq .k{color:var(--celeste)} .eq .d{color:var(--coral)} .eq .op{color:var(--muted)}
.name-copy{display:grid;gap:10px;min-width:0}
.name-copy p{color:var(--muted)}
@media (max-width:820px){.name{grid-template-columns:1fr}}

/* FAQ */
.faq{display:grid;gap:12px;max-width:820px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:0 20px}
.faq summary{cursor:pointer;list-style:none;font-weight:700;padding:18px 0;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:800 1.4rem/1 var(--f-display);color:var(--coral)}
.faq details[open] summary::after{content:"–"}
.faq details p{padding-bottom:18px;color:var(--muted)}

/* Contact */
.contact{background:var(--navy);color:#fff}
.contact .eyebrow{color:var(--sun)}
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start}
.contact .lead{color:#C7D4E3}
form{background:#fff;color:#1D3557;border-radius:18px;padding:28px;display:grid;gap:16px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:grid;gap:6px;font-size:.88rem;font-weight:700}
input,select,textarea{font:500 1rem/1.4 var(--f-body);padding:12px 14px;border-radius:10px;border:2px solid #D9E4EE;background:#F6F9FC;color:#1D3557;width:100%;color-scheme:light}
input:focus,select:focus,textarea:focus{outline:none;border-color:#2EC4D6;background:#fff}
fieldset{border:0;padding:0;margin:0;display:grid;gap:8px}
legend{font-size:.88rem;font-weight:700;margin-bottom:6px}
.pick{display:flex;flex-wrap:wrap;gap:8px}
.pick label{display:inline-flex;align-items:center;gap:6px;font-weight:600;border:2px solid #D9E4EE;border-radius:999px;padding:7px 12px;cursor:pointer;background:#F6F9FC}
.pick input{width:auto;accent-color:#E63946}
.pick label:has(input:checked){border-color:#E63946;background:#FDECEE}
.form-note{font-size:.82rem;color:#52627A}
.err{color:#C22834;font-size:.88rem;font-weight:600;min-height:1.2em}
.channels{display:grid;gap:14px;margin-top:28px}
.channel{display:grid;grid-template-columns:48px 1fr auto;gap:14px;align-items:center;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:14px 16px;min-width:0}
.channel .ic{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:rgba(255,255,255,.1)}
.channel .ic svg{width:24px;height:24px}
.channel small{display:block;color:#C7D4E3;font-size:.8rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.channel span{font-weight:700;font-size:1.08rem;user-select:all;overflow-wrap:anywhere}
.copy{font:700 .85rem/1 var(--f-body);color:#1D3557;background:#fff;border:0;border-radius:999px;padding:9px 14px;cursor:pointer}
.channel a.copy{text-decoration:none}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr}}
@media (max-width:520px){.row2{grid-template-columns:1fr}.channel{grid-template-columns:40px 1fr}.channel .copy{grid-column:1/-1;justify-self:start}.channel .ic{width:40px;height:40px}}


/* Navegación por páginas */
.nav-links a[aria-current="page"]{color:var(--ink);box-shadow:inset 0 -3px 0 var(--coral)}
.nav-links a{padding-block:6px}
.menu-btn{display:none;height:46px;padding:0 16px 0 14px;border-radius:999px;border:0;background:#2EC4D6;color:#0B1F38;cursor:pointer;align-items:center;gap:10px;flex:none;font:800 1rem/1 var(--f-body);letter-spacing:.02em;box-shadow:0 4px 0 #1C93A2;transition:transform .15s}
.menu-btn:active{transform:translateY(2px);box-shadow:0 2px 0 #1C93A2}
.menu-btn .mb-ic{display:flex;flex-direction:column;gap:4px;width:20px}
.menu-btn .mb-ic i{display:block;height:3px;border-radius:2px;background:currentColor;transition:transform .2s,opacity .2s}
.menu-btn[aria-expanded="true"] .mb-ic i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn[aria-expanded="true"] .mb-ic i:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] .mb-ic i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mnav a::after{content:"›";float:right;color:var(--muted);font-weight:700}
.mnav{display:grid;border-top:1px solid var(--line);padding:8px 20px 16px;background:var(--bg)}
.mnav a{text-decoration:none;font:700 1.15rem/1 var(--f-display);padding:14px 4px;border-bottom:1px solid var(--line);color:var(--ink)}
.mnav a[aria-current="page"]{color:var(--coral-ink)}
@media (max-width:1340px){.menu-btn{display:flex}.nav .nav-cta{margin-left:auto;padding:10px 14px;font-size:.85rem}}
@media (max-width:420px){.nav .nav-cta{display:none}.menu-btn{margin-left:auto}}
@media (min-width:1341px){.mnav{display:none!important}}
.view{animation:vin .35s ease-out}
@keyframes vin{from{opacity:.4;transform:translateY(6px)}}
.pagehead{padding-block:clamp(36px,6vw,64px) 28px;border-bottom:1px solid var(--line);
  background:linear-gradient(var(--grid) 1px,transparent 1px) 0 0/28px 28px,linear-gradient(90deg,var(--grid) 1px,transparent 1px) 0 0/28px 28px,var(--bg)}
.pagehead .wrap{display:grid;gap:12px}
.pagehead h1{font-size:clamp(2.2rem,5vw,3.4rem)}
.crumbs{display:flex;gap:8px;font:600 .8rem/1 var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.crumbs a{color:var(--coral-ink);text-decoration:none}
.explore .ex-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.ex{display:grid;gap:10px;align-content:start;text-decoration:none;background:var(--surface);border:2px solid var(--line);border-radius:var(--r);padding:24px;transition:border-color .15s,transform .15s,box-shadow .15s;min-width:0}
.ex:hover{border-color:var(--ink);transform:translateY(-3px);box-shadow:6px 6px 0 var(--celeste)}
.ex-k{font:600 .72rem/1 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--coral-ink)}
.ex p{color:var(--muted);font-size:.95rem}
.ex-go{font-weight:700;margin-top:6px}
@media (max-width:980px){.explore .ex-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.explore .ex-grid{grid-template-columns:1fr}}
.pages{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pg{margin:0;display:grid;gap:10px}
.pg-sheet{aspect-ratio:210/297;max-width:100%;background:var(--surface);border:2px solid var(--line);border-radius:10px;padding:14px;display:grid;align-content:start;gap:10px;position:relative;overflow:hidden}
.pg-sheet span{font:600 .6rem/1 var(--f-mono);color:var(--muted);text-align:right}
.pg-sheet b{font:800 1.1rem/1.1 var(--f-display)}
.pg-sheet i{height:46px;border-radius:8px;background:repeating-linear-gradient(45deg,var(--soft-celeste) 0 8px,transparent 8px 16px);border:1px dashed var(--line)}
.pg-sheet i:nth-of-type(2){background:repeating-linear-gradient(45deg,var(--soft-coral) 0 8px,transparent 8px 16px)}
.pg figcaption{font-size:.85rem;color:var(--muted);font-weight:600}
@media (max-width:820px){.pages{grid-template-columns:1fr 1fr}}

/* ===== Robot KINDÚ (personaje animado) ===== */
.kb-white-b{fill:#FBFDFF;stroke:#A9C0D8;stroke-width:2.5;paint-order:stroke}.kb-shade{fill:#D5E1EE}.kb-hi{fill:#FFFFFF;opacity:.85}
.kb-blue{fill:#4B8FDC}.kb-bluelt{fill:#9CC7F2}.kb-bluehi{fill:#FFFFFF;opacity:.3}
.kb-btn{fill:#D6ECFF;stroke:#8DB8EA;stroke-width:3}
.kb-visor,.kb-lid{fill:#0E131A}
.kb-bracket{fill:none;stroke:#8FE8EE;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;opacity:.9}
.kb-eye{fill:#BDF5F3}.kb-eyeglow{fill:#5FE0EA;opacity:.25}.kb-white{fill:#FFFFFF}
.kb-eyestroke{fill:none;stroke:#BDF5F3;stroke-width:9;stroke-linecap:round}
.kb-mouth{fill:none;stroke:#8FE8EE;stroke-width:4;stroke-linecap:round}.kb-mouthfill{fill:#8FE8EE}
.kb-glow{fill:#5FB4F0;opacity:.5}.kb-shadow{fill:#123047;opacity:.16}
@keyframes kfloat{0%{transform:translateY(0)}100%{transform:translateY(-10px)}}
.k-float{animation:kfloat 2.4s ease-in-out infinite alternate}
.k-float-slow{animation:kfloat 3.8s ease-in-out infinite alternate}
@keyframes kshadow{0%{transform:scaleX(1);opacity:.18}100%{transform:scaleX(.82);opacity:.09}}
.k-shadow{transform-box:fill-box;transform-origin:center;animation:kshadow 2.4s ease-in-out infinite alternate}
.k-shadow-slow{transform-box:fill-box;transform-origin:center;animation:kshadow 3.8s ease-in-out infinite alternate}
@keyframes kblink{0%,91%,100%{transform:scaleY(1)}94%{transform:scaleY(.08)}}
.k-blink{transform-box:fill-box;transform-origin:center;animation:kblink 4.2s infinite}
@keyframes kwave{0%{transform:rotate(-20deg)}100%{transform:rotate(24deg)}}
.k-wave{transform-box:fill-box;transform-origin:50% 100%;animation:kwave .38s ease-in-out infinite alternate}
@keyframes ktap{0%,100%{transform:translateX(0)}50%{transform:translateX(10px)}}
.k-tap{animation:ktap 1s ease-in-out infinite}
@keyframes ktalk{0%{transform:scaleY(1)}20%{transform:scaleY(2.4)}40%{transform:scaleY(.7)}60%{transform:scaleY(1.9)}80%{transform:scaleY(1.1)}100%{transform:scaleY(1)}}
.k-talk{transform-box:fill-box;transform-origin:center;animation:ktalk .7s linear infinite}
@keyframes kjump{0%{transform:translateY(0) scale(1,1)}20%{transform:translateY(6px) scale(1.08,.9)}45%{transform:translateY(-36px) scale(.94,1.07)}70%{transform:translateY(0) scale(1.05,.95)}85%,100%{transform:translateY(0) scale(1,1)}}
.k-jump{transform-box:fill-box;transform-origin:50% 100%;animation:kjump 1.1s ease-in-out infinite}
@keyframes knod{0%,50%,100%{transform:translateY(0)}25%,75%{transform:translateY(6px)}}
.k-nod{animation:knod 1.8s ease-in-out infinite}
@keyframes kpulse{0%{opacity:.35}100%{opacity:1}}
.k-ant{animation:kpulse .6s ease-in-out infinite alternate}
.k-ant-slow{animation:kpulse 2.6s ease-in-out infinite alternate}
@keyframes kshake{0%{transform:rotate(-14deg)}100%{transform:rotate(14deg)}}
.k-shake{transform-box:fill-box;transform-origin:50% 100%;animation:kshake .22s ease-in-out infinite alternate}
.kb-look{transition:transform .25s ease-out}
.bot{display:inline-block;padding:0;border:0;background:radial-gradient(circle at 50% 52%,var(--bot-disc) 0 56%,transparent 57%);cursor:pointer;line-height:0;flex:none;border-radius:20px}
.bot svg{display:block;width:100%;height:auto;overflow:visible}
.bot.flip svg{transform:scaleX(-1)}
@keyframes botin{from{transform:translateY(24px) scale(.9);opacity:0}}
.bot{animation:botin .5s cubic-bezier(.3,1.4,.5,1) both}
.bubble{position:relative;background:var(--surface);color:var(--ink);border:2px solid var(--ink);border-radius:16px;padding:10px 14px;font-weight:700;font-size:.95rem;line-height:1.35;box-shadow:3px 3px 0 var(--ink);min-width:0}
.bubble::before{content:"";position:absolute;left:-10px;top:18px;width:14px;height:14px;background:inherit;border-left:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:rotate(45deg)}
.bubble.ok{background:#DDF5EA;color:#0F5E3E}.bubble.retry{background:var(--soft-coral);color:var(--coral-ink)}
@keyframes pop{0%{transform:scale(.92)}60%{transform:scale(1.03)}100%{transform:scale(1)}}
.bubble.pop{animation:pop .3s ease-out}

/* Misión con robot */
.m-coach{display:grid;grid-template-columns:92px 1fr;gap:14px;align-items:center;margin-bottom:12px}
.m-coach .bot{width:92px}
.levels{display:flex;gap:6px;margin:14px 0 2px;flex-wrap:wrap}
.lv{display:inline-flex;align-items:center;gap:4px;font:600 .72rem/1 var(--f-mono);letter-spacing:.06em;text-transform:uppercase;padding:7px 9px;border-radius:8px;border:1.5px solid var(--line);color:var(--muted);background:transparent}
.lv.on{border-color:var(--ink);color:var(--ink);background:var(--soft-sun)}
.lv.done{border-color:var(--celeste);color:var(--ink);background:var(--soft-celeste)}
.task{display:flex;align-items:center;justify-content:center;gap:10px;margin:18px 0 16px;flex-wrap:wrap;min-height:96px}
.seq{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.seq b{width:48px;height:56px;border-radius:12px;display:grid;place-items:center;font:800 1.7rem/1 var(--f-display);background:var(--soft-celeste);color:var(--ink)}
.seq b.q{background:transparent;border:3px dashed var(--ink);color:var(--coral)}
.op{font:800 1.8rem/1 var(--f-display);color:var(--muted)}
.dots b.x{background:transparent;border:2.5px solid var(--celeste);position:relative}
.dots b.x::after{content:"";position:absolute;left:-4px;right:-4px;top:50%;height:3px;background:var(--coral);transform:rotate(-45deg);border-radius:2px}
.tenf{display:grid;grid-template-columns:repeat(5,22px);gap:5px;padding:10px;border-radius:12px;border:2px solid var(--ink);background:var(--soft-celeste)}
.tenf b{width:22px;height:22px;border-radius:50%;border:2px dashed var(--muted);background:transparent}
.tenf b.on{border:0;background:var(--celeste)}
.eq10{display:flex;align-items:center;gap:8px;font:800 1.7rem/1 var(--f-display)}
.choices button.opt{width:auto;min-width:58px;padding-inline:12px}
.m-end{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:14px}
.m-end .btn{padding:11px 16px;font-size:.9rem}
.again{font:700 .85rem/1 var(--f-mono);color:var(--ink);background:var(--soft-sun);border:0;border-radius:8px;padding:12px 14px;cursor:pointer}
.mission .feedback{display:none}

/* Robot en cabeceras */
.pagehead .wrap{grid-template-columns:1fr auto;align-items:end;column-gap:28px}
.pagehead .wrap > *:not(.ph-bot){grid-column:1}
.ph-bot{grid-column:2;grid-row:1 / span 3;display:flex;align-items:flex-end;gap:10px}
.ph-bot .bot{width:150px}
.ph-bot .bubble{max-width:210px;align-self:flex-start;margin-top:6px}
@media (max-width:760px){.pagehead .wrap{grid-template-columns:1fr}.ph-bot{grid-column:1;grid-row:auto;order:-1}.ph-bot .bot{width:84px}}
.ex-head{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:end;margin-bottom:40px}
.ex-head .sec-head{margin:0}
.ex-bot{display:flex;align-items:center;gap:10px}
.ex-bot .bot{width:120px}
.ex-bot .bubble{max-width:220px}
@media (max-width:760px){.ex-head{grid-template-columns:1fr}.ex-bot .bot{width:90px}}
.ct-bot{display:flex;align-items:center;gap:12px;margin-top:24px}
.ct-bot .bot{width:110px}
.ct-bot .bubble{max-width:260px}
.contact .bubble{box-shadow:3px 3px 0 #0B1626}

.nav-links a.nav-mundo{color:#fff;background:var(--navy);padding:9px 13px;border-radius:999px;box-shadow:inset 0 0 0 2px var(--celeste)}
:root:not([data-theme="light"]) .nav-links a.nav-mundo{background:#1E3656}
.mnav a.nav-mundo{color:var(--coral-ink)}
.mundo-band{margin-top:28px;display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:center;border-radius:20px;padding:22px 26px;color:#F2F7FC;
  background:radial-gradient(380px 220px at 10% 50%,rgba(46,196,214,.3),transparent 70%),linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px) 0 0/28px 28px,linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px) 0 0/28px 28px,#13253F}
.mundo-band .bot{width:110px;--bot-disc:#1E3656}
.mundo-band h3{font-size:1.8rem;color:#fff}
.mundo-band p{color:#B9C8DA}
.mb-copy{display:grid;gap:6px;min-width:0}
@media (max-width:760px){.mundo-band{grid-template-columns:1fr;justify-items:start}.mundo-band .bot{width:84px}}

.nav-links .nav-mundo,.mnav .nav-mundo{font:inherit;font-weight:700;cursor:pointer;border:0}
.nav-links .nav-mundo{color:#fff;background:#13253F;padding:9px 13px;border-radius:999px;box-shadow:inset 0 0 0 2px var(--celeste);font-size:.95rem;white-space:nowrap;position:relative}
.nav-links .nav-mundo::after{content:"";position:absolute;right:-2px;top:-2px;width:9px;height:9px;border-radius:50%;background:var(--sun);box-shadow:0 0 0 0 rgba(244,210,60,.7);animation:ping 1.8s infinite}
@keyframes ping{70%{box-shadow:0 0 0 8px rgba(244,210,60,0)}100%{box-shadow:0 0 0 0 rgba(244,210,60,0)}}
.mnav .nav-mundo{text-align:left;background:none;color:var(--coral-ink);font:700 1.15rem/1 var(--f-display);padding:14px 4px;border-bottom:1px solid var(--line)}
.space{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:16px;background:rgba(6,12,22,.72);backdrop-filter:blur(6px);animation:fadein .25s ease-out}
@keyframes fadein{from{opacity:0}}
.space-card{position:relative;width:min(560px,100%);max-height:calc(100% - 16px);overflow:auto;border-radius:26px;border:2px solid var(--celeste);background:radial-gradient(420px 300px at 80% 0%,rgba(46,196,214,.28),transparent 70%),radial-gradient(360px 260px at 0% 100%,rgba(230,57,70,.3),transparent 70%),#0A1424;color:#F2F7FC;box-shadow:0 30px 80px rgba(0,0,0,.5);animation:warp .5s cubic-bezier(.2,1.3,.4,1)}
@keyframes warp{from{transform:scale(.85) translateY(30px);opacity:0}}
.stars{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.space-in{position:relative;display:grid;justify-items:center;text-align:center;gap:12px;padding:40px 28px 28px}
.space-in h2{color:#fff;font-size:clamp(1.7rem,4.4vw,2.3rem)}
.space-in p{color:#B9C8DA;max-width:42ch}
.space-bot{position:relative;width:140px;animation:rocket 3s ease-in-out infinite}
.space-bot .bot{width:140px;background:none}
@keyframes rocket{0%,100%{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-14px) rotate(4deg)}}
.flame{position:absolute;left:50%;bottom:-6px;width:26px;height:34px;transform:translateX(-50%);border-radius:50% 50% 50% 50%/60% 60% 40% 40%;background:radial-gradient(circle at 50% 30%,#fff 0 20%,#F4D23C 35%,#E63946 70%,transparent 72%);filter:blur(.5px);animation:flame .18s ease-in-out infinite alternate}
@keyframes flame{to{height:44px;opacity:.8}}
.orbit{position:absolute;left:26px;top:26px;width:70px;height:70px}
.planet{position:absolute;inset:12px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#FF8A94,#E63946 60%,#8E1F2A)}
.ring{position:absolute;left:-6px;right:-6px;top:30px;height:12px;border:3px solid var(--sun);border-radius:50%;transform:rotate(-18deg)}
.space-x{position:absolute;right:12px;top:10px;z-index:2;width:40px;height:40px;border-radius:50%;border:0;background:rgba(255,255,255,.1);color:#fff;font:700 1.5rem/1 var(--f-body);cursor:pointer}
.countdown{display:flex;align-items:center;gap:8px;font:600 .78rem/1 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:#B9C8DA;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);padding:9px 12px;border-radius:10px}
.countdown b{font:800 1.1rem/1 var(--f-display);color:var(--sun);min-width:1ch}
.countdown i{width:7px;height:7px;border-radius:50%;background:var(--celeste);animation:blinkdot 1.2s infinite}
.countdown i:nth-of-type(2){animation-delay:.2s}.countdown i:nth-of-type(3){animation-delay:.4s}
@keyframes blinkdot{50%{opacity:.2}}
.space-ctas{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:6px}
.space .btn-ghost{border-color:rgba(255,255,255,.6);color:#fff}
@media (max-width:480px){.orbit{width:50px;height:50px;left:16px}.space-bot,.space-bot .bot{width:110px}}

.contact-grid>*{min-width:0}
form fieldset{min-width:0}
#f{grid-template-columns:minmax(0,1fr)}
#f>*{min-width:0}
#f .btn{white-space:normal;text-align:center;line-height:1.2}
.plans{display:grid;gap:10px}
.plan{position:relative;display:grid;gap:4px;border:2px solid #D9E4EE;border-radius:14px;padding:14px 14px 14px 44px;cursor:pointer;background:#F6F9FC;transition:border-color .15s,box-shadow .15s}
.plan input{position:absolute;left:14px;top:16px;width:20px;height:20px;accent-color:#E63946;margin:0}
.plan:has(input:checked){border-color:#E63946;background:#FFF5F6;box-shadow:0 0 0 3px rgba(230,57,70,.15)}
.plan-int{border-color:#2EC4D6;background:linear-gradient(135deg,#E9FAFC,#FFFFFF)}
.plan-badge{justify-self:start;font:700 .68rem/1 var(--f-body);letter-spacing:.08em;text-transform:uppercase;background:#E63946;color:#fff;padding:5px 8px;border-radius:999px}
.plan-t{font:800 1.02rem/1.25 var(--f-display);color:#1D3557}
.plan-d{font-size:.86rem;color:#52627A;font-weight:500}
.plan-ok{font-size:.8rem;color:#157A52;font-weight:700}
.plan-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.plan-sm{padding:12px 12px 12px 40px}
.plan-sm input{top:13px;left:12px;width:18px;height:18px}
.plan-sm .plan-t{font-size:.92rem;font-family:var(--f-body);font-weight:700}
@media (max-width:420px){.plan-row{grid-template-columns:1fr}}

/* Franjas unificadas */
.ticker span{font:700 1rem/1 var(--f-display);padding:13px 0}
.ticker.ticker span::after{color:#FFFFFF}
.ticker .lbl{background:#13253F;color:#FFFFFF}
.strip-top{position:relative;z-index:2;border-top:0}
.hero{padding-block:0!important}
.hero-grid{grid-template-columns:1fr 1fr!important;gap:48px!important;align-items:center;padding-block:clamp(40px,6vw,72px)}
.hero h1{font-size:clamp(2.3rem,4.4vw,3.7rem)!important}
.hero-copy{gap:20px!important;max-width:560px}
.hero-side{justify-items:center}
.hero-side .mission{max-width:460px}
@media (max-width:880px){.hero-grid{grid-template-columns:1fr!important}.hero-copy{max-width:none}}

/* Libro destacado */
.grades .feature{grid-column:1/-1;display:grid;grid-template-columns:auto 1fr;gap:36px;align-items:center;padding:28px 32px;border-radius:22px;border:2px solid var(--ink);background:linear-gradient(135deg,var(--soft-celeste),var(--surface) 70%);box-shadow:8px 8px 0 var(--coral)}
.bookcover{position:relative;width:170px;aspect-ratio:3/4;max-width:100%;border-radius:6px 14px 14px 6px;background:linear-gradient(160deg,#2EC4D6,#1A8FA0);box-shadow:inset 10px 0 0 rgba(0,0,0,.18),12px 14px 0 rgba(11,31,56,.18);display:grid;align-content:space-between;padding:16px 14px 14px 22px;color:#fff;transform:rotate(-3deg);transition:transform .25s}
.feature:hover .bookcover{transform:rotate(0) translateY(-4px)}
.bookcover b{font:800 1.5rem/1 var(--f-display)}
.bookcover small{font:700 .7rem/1.2 var(--f-body);letter-spacing:.08em;text-transform:uppercase;opacity:.9}
.bookcover .g{font:800 3.4rem/1 var(--f-display)}
.feature-copy{display:grid;gap:12px;justify-items:start;min-width:0}
.feature-copy h3{font-size:clamp(1.5rem,3vw,2rem)}
.feature-copy p{color:var(--muted);max-width:52ch}
.feature-copy .btn{font-size:1.05rem;padding:15px 26px;letter-spacing:.04em}
.feature-tags{display:flex;flex-wrap:wrap;gap:8px}
.feature-tags span{font:600 .78rem/1 var(--f-mono);padding:7px 10px;border-radius:8px;background:var(--surface);border:1px solid var(--line);color:var(--ink)}
@media (max-width:640px){.grades .feature{grid-template-columns:1fr;justify-items:center;text-align:center;padding:24px 20px}.feature-copy{justify-items:center}.bookcover{width:140px}}

/* Visor del libro */
.reader{position:fixed;inset:0;z-index:70;background:rgba(6,12,22,.82);backdrop-filter:blur(6px);display:grid;place-items:center;padding:16px}
.reader-box{width:min(1100px,100%);height:min(86vh,760px);background:#0F1B2D;border:2px solid #2EC4D6;border-radius:20px;display:grid;grid-template-rows:auto 1fr auto;overflow:hidden}
.reader-top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;color:#fff;border-bottom:1px solid rgba(255,255,255,.12)}
.reader-top b{font:800 1.1rem/1.2 var(--f-display)}
.reader-top button{width:40px;height:40px;border-radius:50%;border:0;background:rgba(255,255,255,.12);color:#fff;font:700 1.4rem/1 var(--f-body);cursor:pointer}
.reader-frame{width:100%;height:100%;border:0;display:block;background:#0F1B2D}
.reader-ph{display:grid;place-items:center;gap:18px;padding:24px;color:#C7D4E3;text-align:center}
.flip{display:flex;gap:0;perspective:1200px}
.flip i{width:min(190px,32vw);aspect-ratio:3/4;background:#fff;border-radius:4px 10px 10px 4px;box-shadow:0 10px 30px rgba(0,0,0,.4);display:block;position:relative}
.flip i:first-child{border-radius:10px 4px 4px 10px;transform:rotateY(8deg);transform-origin:right}
.flip i:last-child{transform:rotateY(-8deg);transform-origin:left}
.flip i::before{content:"";position:absolute;inset:14px;background:repeating-linear-gradient(180deg,#E3EDF5 0 10px,transparent 10px 22px)}
.reader-foot{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:10px 16px;font-size:.85rem;color:#A3B3C6;border-top:1px solid rgba(255,255,255,.12)}

/* Libros seleccionables */
.pick-book{font:inherit;color:inherit;text-align:left;cursor:pointer;border:2px solid var(--line);transition:border-color .15s,transform .15s,box-shadow .15s}
.pick-book:hover{border-color:var(--ink);transform:translateY(-3px);box-shadow:5px 5px 0 var(--celeste)}
.pick-book .cover{display:grid}
.cover small{font-size:.5rem!important;letter-spacing:.02em!important;padding-inline:2px}
.pick-book .bk-t{font:700 1.15rem/1.15 var(--f-display);display:block}
.pick-book .bk-d{font-size:.92rem;color:var(--muted);display:block}
.pick-book .book-info{display:grid;gap:6px;min-width:0}
.bookcover.com{background:linear-gradient(160deg,#FF6B78,#C22834)}
.grades .feature.com{box-shadow:8px 8px 0 #2EC4D6}
@keyframes swapin{from{opacity:.3;transform:translateY(10px) scale(.99)}}
.feature.swap{animation:swapin .45s cubic-bezier(.2,1.2,.4,1)}
.grades{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
/* Párrafos separados */
p.sp + p.sp{margin-top:.7em}
.hero-copy p.sp + p.sp,.pagehead p.sp + p.sp,.sec-head p.sp + p.sp,.dir-copy p.sp + p.sp{margin-top:-6px}
.lead.sp{max-width:62ch}
.feature-copy p + p{margin-top:-4px}

footer{padding-block:32px;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
.foot{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;align-items:center}

.wa-float{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:30;width:60px;height:60px;border-radius:50%;background:#25D366;display:grid;place-items:center;box-shadow:0 8px 20px rgba(0,0,0,.25);transition:transform .15s}
.wa-float:hover{transform:scale(1.06)}
.wa-float svg{width:32px;height:32px}