/* OPUS-K · opositia · estilos comunes (dirección Libreta). Fuentes OFL incrustadas en build. */
@font-face{font-family:"Nunito";src:url(fonts/Nunito-latin.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Nunito Sans";src:url(fonts/NunitoSans-latin.woff2) format("woff2");font-weight:400 800;font-display:swap}
@font-face{font-family:"Atkinson";src:url(fonts/AtkinsonHyperlegible-Bold.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Bricolage";src:url(fonts/BricolageGrotesque-variable.woff2) format("woff2");font-weight:700;font-display:swap}

:root{
  --paper:#fbf8ef; --raised:#fffdf7; --ink:#17324d; --muted:#4c5f72;
  --blue:#1d3fbb; --blue-d:#132c8a; --blue-soft:#e6ebfb;
  --marker:#eaff3d; --marker-d:#b6c900;
  --pink:#ffb8c9; --pink-d:#ef8aa4; --red:#a20e28; --red-bg:#fdecee;
  --green:#1f5b3f; --green-bg:#e2f2e7; --line:#d6dfe5; --grid:rgba(29,63,187,.075);
  --r-s:12px; --r-m:18px; --r-l:28px;
  --shadow:0 1px 0 rgba(23,50,77,.06),0 12px 32px -14px rgba(23,50,77,.28);
  --f-head:"Nunito",ui-rounded,system-ui,sans-serif;
  --f-body:"Nunito Sans",system-ui,sans-serif;
  --f-act:"Atkinson",system-ui,sans-serif;
  --f-brand:"Bricolage","Nunito",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px;scroll-padding-bottom:24px}
body{margin:0;background:var(--paper);color:var(--ink);font:500 1.0625rem/1.55 var(--f-body);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:26px 26px;overflow-x:hidden}
img,svg{display:block;max-width:100%}
h1,h2,h3{font-family:var(--f-head);font-weight:700;line-height:1.08;letter-spacing:-.02em;margin:0;text-wrap:balance}
p{margin:0;text-wrap:pretty}
a{color:var(--blue);text-underline-offset:3px}
a:hover{color:var(--blue-d)}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:6px}
.on-blue :focus-visible,.on-blue:focus-visible{outline-color:var(--marker)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;z-index:50;background:var(--ink);color:#fff;padding:10px 14px;border-radius:10px;font:700 1rem var(--f-act)}
.skip:focus{top:12px;color:#fff}

/* marca */
.brand{font:700 1.6rem/1 var(--f-brand);letter-spacing:-.03em;color:var(--ink);text-decoration:none;display:inline-flex;align-items:center;gap:.35rem}
.brand .dot{width:.55em;height:.55em;background:var(--pink);border-radius:3px;transform:rotate(-8deg);box-shadow:inset -3px -3px 0 var(--pink-d)}

/* rotulador */
.mark{background:linear-gradient(100deg,transparent 0 2%,var(--marker) 2% 97%,transparent 97%);background-size:100% 42%;background-repeat:no-repeat;background-position:0 88%;padding:0 .08em;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.mark-pink{background-image:linear-gradient(100deg,transparent 0 2%,var(--pink) 2% 97%,transparent 97%)}

/* botones: pulsables, con canto como Duolingo */
.btn{--c:var(--blue);--cd:var(--blue-d);--t:#fff;appearance:none;border:0;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  min-height:52px;padding:.8rem 1.4rem;border-radius:16px;background:var(--c);color:var(--t);font:700 1.0625rem/1.2 var(--f-act);text-decoration:none;
  box-shadow:0 4px 0 var(--cd);transition:transform .08s ease,box-shadow .08s ease,filter .15s;text-align:center}
.btn:hover{filter:brightness(1.06);color:var(--t)}
.btn:active{transform:translateY(3px);box-shadow:0 1px 0 var(--cd)}
.btn-marker{--c:var(--marker);--cd:var(--marker-d);--t:var(--ink)}
.btn-ghost{--c:var(--raised);--cd:var(--line);--t:var(--ink);border:2px solid var(--line)}
.btn-block{width:100%}
.btn{flex-wrap:wrap;column-gap:.5rem;row-gap:.1rem}
.btn small{display:block;flex-basis:100%;font:500 .78rem/1.2 var(--f-body);opacity:.92}

.chip{display:inline-flex;align-items:center;gap:.45rem;padding:.35rem .8rem;border-radius:999px;background:var(--raised);border:1.5px solid var(--line);font:700 .85rem/1.2 var(--f-act);color:var(--ink)}
.chip i{width:.55rem;height:.55rem;border-radius:50%;background:var(--green);display:inline-block}

.card{background:var(--raised);border:1.5px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow)}

/* pregunta */
.q-meta{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;font:700 .8rem/1.2 var(--f-act);color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.q-text{font:700 1.2rem/1.3 var(--f-head);margin:.6rem 0 1rem;color:var(--ink)}
.opts{display:grid;gap:.55rem;margin:0;padding:0;list-style:none}
.opt{appearance:none;width:100%;text-align:left;display:flex;gap:.75rem;align-items:flex-start;padding:.8rem .95rem;min-height:52px;
  background:#fff;border:2px solid var(--line);border-radius:14px;box-shadow:0 3px 0 var(--line);color:var(--ink);font:600 1rem/1.35 var(--f-body);cursor:pointer;transition:transform .08s,border-color .15s,background .15s}
.opt:hover:not([disabled]){border-color:var(--blue);background:var(--blue-soft)}
.opt:active:not([disabled]){transform:translateY(2px);box-shadow:0 1px 0 var(--line)}
.opt .k{flex:none;width:28px;height:28px;border-radius:8px;border:2px solid var(--line);display:grid;place-items:center;font:700 .85rem var(--f-act);color:var(--muted)}
.opt{position:relative}
.opt .tag{position:absolute;top:-11px;right:12px;font:700 .78rem/1.2 var(--f-act);padding:.2rem .5rem;border-radius:999px}
.opt[disabled]{cursor:default}
.opt.is-right{border-color:var(--green);background:var(--green-bg);box-shadow:0 3px 0 #a9d3b7}
.opt.is-right .k{background:var(--green);border-color:var(--green);color:#fff}
.opt.is-right .tag{background:var(--green);color:#fff}
.opt.is-wrong{border-color:var(--red);background:var(--red-bg);box-shadow:0 3px 0 #f1b6bf}
.opt.is-wrong .k{background:var(--red);border-color:var(--red);color:#fff}
.opt.is-wrong .tag{background:var(--red);color:#fff}
.opt.is-dim{opacity:.62}
.opt-idk{background:transparent;box-shadow:none;border-style:dashed;justify-content:center;font-family:var(--f-act);font-weight:700;color:var(--muted)}
.opt-idk.is-picked{border-color:var(--ink);color:var(--ink);background:#fff}

/* mascota Posi */
.posi{width:100%;height:auto;overflow:visible}
.posi .p-happy,.posi .p-oh{display:none}
.posi.is-happy .p-eyes,.posi.is-happy .p-mouth,.posi.is-happy .p-arm-down{display:none}
.posi.is-happy .p-happy{display:inline}
.posi.is-oh .p-mouth{display:none}
.posi.is-oh .p-oh{display:inline}
.posi .p-eyes{transform-origin:60px 56px;animation:blink 5.5s infinite}
.posi-float{animation:bob 3.6s ease-in-out infinite}
@keyframes blink{0%,94%,100%{transform:scaleY(1)}96%{transform:scaleY(.1)}}
@keyframes bob{0%,100%{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-6px) rotate(2deg)}}
@keyframes pop{0%{transform:scale(.6);opacity:0}70%{transform:scale(1.06);opacity:1}100%{transform:scale(1)}}
@keyframes rise{from{transform:translateY(10px);opacity:0}to{transform:none;opacity:1}}

.bubble{position:relative;background:#fff;border:2px solid var(--ink);border-radius:18px;padding:.7rem .95rem;font:600 1rem/1.4 var(--f-body);color:var(--ink);box-shadow:3px 3px 0 var(--ink)}

.src{font:600 .85rem/1.4 var(--f-body);color:var(--muted)}
.src a{font-weight:700}
sup a{font:700 .7em var(--f-act);text-decoration:none;padding:0 .15em}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .posi .p-eyes,.posi-float{animation:none!important}
}

.proto{background:var(--ink);color:#fff;font:600 .82rem/1.35 var(--f-body);text-align:center;padding:.45rem 1rem}
.wrap{width:min(1180px,100% - 2.5rem);margin-inline:auto}
header.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1.5px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:1rem;min-height:68px}
.top nav{margin-left:auto;display:flex;align-items:center;gap:.25rem}
.top nav a.l{font:700 .95rem var(--f-act);color:var(--ink);text-decoration:none;padding:.6rem .75rem;border-radius:10px}
.top nav a.l:hover{background:var(--blue-soft)}
.top .btn{min-height:44px;padding:.55rem 1rem;font-size:.95rem}
@media (max-width:760px){.top nav a.l{display:none}}

/* HERO */
.hero{padding:clamp(2rem,5vw,4.5rem) 0 clamp(3rem,6vw,5.5rem);position:relative}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,4vw,4rem);align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;font:700 .88rem/1.25 var(--f-act);color:var(--ink);background:#fff;border:1.5px solid var(--line);padding:.4rem .8rem .4rem .45rem;border-radius:999px}
.eyebrow b{background:var(--pink);border-radius:999px;padding:.15rem .55rem;font-weight:700}
.hero h1{font-size:clamp(2.4rem,5vw,4.25rem);margin:1rem 0 1rem}
.hero .lede{font-size:clamp(1.1rem,1.6vw,1.3rem);color:var(--ink);max-width:36ch}
.hero .lede strong{font-weight:800}
.count{display:flex;gap:.9rem;align-items:center;margin-top:1.6rem;padding:.8rem 1.1rem .8rem .9rem;background:#fff;border:1.5px solid var(--line);border-radius:18px;width:fit-content;max-width:100%}
.count .n{font:700 3.2rem/1 var(--f-head);color:var(--blue);letter-spacing:-.04em;background:var(--marker);border-radius:12px;padding:.1rem .5rem .2rem}
.count p{font:600 .95rem/1.35 var(--f-body);color:var(--muted);max-width:34ch}
.count p strong{display:block;font:700 1.15rem/1.2 var(--f-head)}
.count p strong{color:var(--ink)}
.stage{position:relative;min-height:540px}
.stage .photo{position:absolute;inset:0 -12% 0 4%;border-radius:var(--r-l);background:url(libreta-hero.webp) 38% 50%/cover;box-shadow:var(--shadow)}
.qcard{position:relative;margin:2.2rem 0 0 0;width:min(470px,100%);padding:1.4rem 1.3rem 1.3rem;animation:rise .5s ease both}
.qcard .posi-wrap{position:absolute;right:-26px;top:-62px;width:92px}
.qcard .say{position:absolute;right:62px;top:-50px;max-width:210px;font-size:.9rem;padding:.45rem .7rem}
.fb{margin-top:1rem;border-radius:16px;padding:1rem;animation:rise .35s ease both}
.fb.ok{background:var(--green-bg)}
.fb.ko{background:var(--red-bg)}
.fb.idk{background:var(--blue-soft)}
.fb h3{font-size:1.15rem;margin-bottom:.35rem}
.fb p{font-size:.98rem}
.fb .src{margin-top:.5rem}
.fb .btn{margin-top:.9rem}
@media (max-width:980px){
  .hero .wrap{grid-template-columns:1fr}
  .stage{min-height:0}
  .hero .wrap>div:first-child{display:contents}
  .hero .count{order:3;margin-top:0}
  .stage{order:2}
  .stage .photo{inset:-.5rem -1.25rem auto;height:120px;border-radius:0}
  .qcard{margin:4.6rem auto 0}
  .hero .wrap{gap:1.2rem}
  .hero h1{margin:.8rem 0 .7rem}
  .qcard .posi-wrap{right:-8px;top:-70px;width:84px}
  .qcard .say{right:74px;top:-58px}
}

/* secciones */
section.band{padding:clamp(3.5rem,7vw,6.5rem) 0}
.kicker{font:700 .85rem/1 var(--f-act);text-transform:uppercase;letter-spacing:.08em;color:var(--blue)}
.band h2{font-size:clamp(2rem,4.2vw,3.3rem);margin:.7rem 0 1rem;max-width:20ch}
.band .intro{font-size:1.15rem;max-width:56ch;color:var(--ink)}

.facts{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem;margin-top:2.4rem}
.fact{padding:1.3rem 1.1rem 1.1rem;border-radius:var(--r-m);background:var(--raised);border:1.5px solid var(--line);position:relative}
.fact:nth-child(odd){transform:rotate(-.6deg)}
.fact:nth-child(even){transform:rotate(.5deg)}
.fact .big{font:700 clamp(2.1rem,3.4vw,2.9rem)/1 var(--f-head);letter-spacing:-.03em;color:var(--ink)}
.fact .big small{font-size:.5em;letter-spacing:0}
.fact p{margin-top:.55rem;font-size:.97rem}
.fact.hot{background:var(--marker);border-color:var(--marker-d)}
@media (max-width:1020px){.facts{grid-template-columns:repeat(2,1fr)}.fact:last-child{grid-column:1/-1}}
@media (max-width:440px){.facts{grid-template-columns:1fr}}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-top:2.6rem;counter-reset:s}
.step{padding:1.4rem;display:flex;flex-direction:column;gap:.9rem}
.step h3{font-size:1.45rem}
.step h3::before{counter-increment:s;content:counter(s);display:inline-grid;place-items:center;width:2rem;height:2rem;margin-right:.55rem;border-radius:10px;background:var(--ink);color:#fff;font:700 1rem var(--f-act);vertical-align:.18em}
.mini{margin-top:auto;border-radius:16px;background:var(--paper);border:1.5px dashed var(--line);padding:.9rem}
.mini .row{display:flex;flex-wrap:wrap;gap:.45rem}
.mini .pill{padding:.45rem .75rem;border-radius:999px;background:#fff;border:2px solid var(--line);font:700 .85rem var(--f-act)}
.mini .pill.on{border-color:var(--blue);background:var(--blue-soft);color:var(--blue-d)}
.mini .okline{display:flex;gap:.5rem;align-items:flex-start;font-size:.92rem}
.mini .okline b{flex:none;background:var(--green);color:#fff;border-radius:999px;padding:.1rem .5rem;font:700 .78rem var(--f-act)}
.mini .today{display:grid;gap:.45rem;font-size:.92rem}
.mini .today div{display:flex;justify-content:space-between;gap:.6rem;background:#fff;border-radius:10px;padding:.5rem .7rem;border:1.5px solid var(--line)}
.mini .today span:last-child{font-weight:800;white-space:nowrap}
@media (max-width:900px){.steps{grid-template-columns:1fr}}

.idk{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.calc{padding:1.6rem}
.calc h3{font-size:1.2rem;margin-bottom:1rem}
.calc .line{display:grid;grid-template-columns:1fr auto;gap:.5rem 1rem;align-items:center;padding:.8rem 0;border-top:1.5px dashed var(--line);font-size:1rem}
.calc .line .v{font:700 1.8rem/1 var(--f-head)}
.calc .line.win .v{background:var(--marker);padding:.1rem .4rem;border-radius:6px}
.calc .src{margin-top:.8rem}
@media (max-width:900px){.idk{grid-template-columns:1fr}}

.turnos{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.turnos .photo2{aspect-ratio:4/5;border-radius:var(--r-l);background:url(notebook-detail.webp) 62% 40%/cover;box-shadow:var(--shadow);max-height:560px}
.lines{display:grid;gap:.9rem;margin-top:1.8rem}
.lines .l{display:flex;gap:.8rem;align-items:flex-end}
.lines .l .av{flex:none;width:54px}
.lines .l .bubble{max-width:34rem}
.lines .l:nth-child(2){margin-left:2.5rem}
@media (max-width:900px){.turnos{grid-template-columns:1fr}.turnos .photo2{aspect-ratio:16/10}.lines .l:nth-child(2){margin-left:0}}

.honest{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;margin-top:2.4rem}
.honest .card{padding:1.5rem}
.honest h3{font-size:1.3rem;margin-bottom:.8rem}
.honest ul{margin:0;padding:0;list-style:none;display:grid;gap:.6rem}
.honest li{display:flex;gap:.6rem;align-items:flex-start}
.honest li b{flex:none;font:700 .78rem var(--f-act);padding:.15rem .5rem;border-radius:999px;margin-top:.15rem}
.honest .no b{background:var(--red-bg);color:var(--red)}
.honest .yes b{background:var(--green-bg);color:var(--green)}
@media (max-width:760px){.honest{grid-template-columns:1fr}}

.price{background:var(--blue);color:#fff;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:26px 26px}
.price .kicker{color:var(--marker)}
.price h2{color:#fff}
.price .intro{color:#e8edff}
.plan{display:grid;grid-template-columns:1.1fr .9fr;gap:1.4rem;margin-top:2.4rem;align-items:start}
.plan .card{color:var(--ink);padding:1.8rem}
.plan .tier{font:700 .9rem var(--f-act);text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.ph{display:inline-block;font:700 .9em var(--f-act);border:2px dashed currentColor;border-radius:8px;padding:0 .35em;letter-spacing:0;white-space:nowrap}
.amount{font:700 3.2rem/1 var(--f-head);margin:.5rem 0 .3rem;letter-spacing:-.03em}
.plan ul{list-style:none;margin:1.2rem 0 1.4rem;padding:0;display:grid;gap:.65rem}
.plan li{display:flex;gap:.65rem;align-items:flex-start}
.plan li::before{content:"";flex:none;width:1.15rem;height:1.15rem;margin-top:.2rem;border-radius:5px;background:var(--marker) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 8.5l3 3 6-7' fill='none' stroke='%2317324d' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/80% no-repeat;border:1.5px solid var(--marker-d)}
.founder{background:var(--pink);border-radius:14px;padding:.8rem 1rem;font-weight:700;margin-top:.8rem}
.promise{background:#fff;color:var(--ink);border-radius:var(--r-l);padding:1.6rem;border:3px solid var(--marker)}
.promise h3{font-size:1.35rem;margin-bottom:.6rem}
.promise .fine{font-size:.9rem;color:var(--muted);margin-top:.8rem}
.legend{margin-top:1.4rem;font:600 .92rem/1.4 var(--f-body);color:#e8edff}
@media (max-width:900px){.plan{grid-template-columns:1fr}}

.faq{display:grid;gap:.7rem;margin-top:2rem;max-width:860px}
.faq details{background:var(--raised);border:1.5px solid var(--line);border-radius:var(--r-m);padding:0 1.2rem}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center;padding:1.05rem 0;font:700 1.12rem/1.3 var(--f-head);min-height:52px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;font:700 1.5rem/1 var(--f-act);color:var(--blue);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 0 1.1rem;max-width:68ch}

.final{text-align:center}
.final h2{margin-inline:auto}
.final .posi-wrap{width:120px;margin:0 auto 1rem}
.final .btn{margin-top:1.6rem}
footer{border-top:1.5px solid var(--line);padding:2.5rem 0 3rem;font-size:.92rem;color:var(--muted)}
footer ol{padding-left:1.2rem;display:grid;gap:.35rem;margin:.8rem 0 0}
footer .row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;align-items:center;margin-bottom:1.5rem}
footer strong{color:var(--ink)}