@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:400;font-display:swap;src:url('fonts/pjs-400-latin-ext.woff2') format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:400;font-display:swap;src:url('fonts/pjs-400-latin.woff2') format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:500;font-display:swap;src:url('fonts/pjs-500-latin-ext.woff2') format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:500;font-display:swap;src:url('fonts/pjs-500-latin.woff2') format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:600;font-display:swap;src:url('fonts/pjs-600-latin-ext.woff2') format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:600;font-display:swap;src:url('fonts/pjs-600-latin.woff2') format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:700;font-display:swap;src:url('fonts/pjs-700-latin-ext.woff2') format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:700;font-display:swap;src:url('fonts/pjs-700-latin.woff2') format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:800;font-display:swap;src:url('fonts/pjs-800-latin-ext.woff2') format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;}
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:800;font-display:swap;src:url('fonts/pjs-800-latin.woff2') format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;}
/* ───────────── Cinkify · landing para profesores de Matemáticas ───────────── */
:root{
  --ink:#1a1b4b;--ink2:#4a4e69;--ink3:#6b7190;--line:rgba(26,27,75,.09);
  --blue:#4361ee;--blue-deep:#304ffe;--blue-soft:#eef1ff;--blue-line:rgba(67,97,238,.24);
  --ok:#16a34a;--ok-soft:#e7f6ec;--bad:#e11d48;--bad-soft:#fdebef;--amber:#f59e0b;--amber-soft:#fff4dc;--amber-ink:#b45309;
  --gray:#d9ddec;--gray-soft:#f1f2f8;--bg:#f5f6fc;--white:#fff;
  --r:22px;--shadow:0 30px 70px rgba(31,38,135,.12),0 4px 14px rgba(31,38,135,.05);
  --wrap:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:'Plus Jakarta Sans',system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.5;
  background-image:radial-gradient(rgba(67,97,238,.11) 1.3px,transparent 1.5px);background-size:30px 30px;overflow-x:hidden}
img,svg,video{max-width:100%;display:block}
a{color:var(--blue)}
button{font-family:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}
.nw{white-space:nowrap}

/* botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;border-radius:999px;padding:15px 28px;font-size:17px;font-weight:800;text-decoration:none;cursor:pointer;transition:transform .15s ease,box-shadow .2s ease,background .2s ease;white-space:nowrap}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 12px 26px rgba(67,97,238,.32)}
.btn-primary:hover{background:var(--blue-deep);box-shadow:0 16px 32px rgba(67,97,238,.38)}
.btn-ghost{background:#fff;color:var(--blue);border:2px solid var(--blue-line)}
.btn-ghost:hover{border-color:var(--blue)}
.btn-sm{padding:11px 20px;font-size:15px}
.btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none}
:focus-visible{outline:3px solid rgba(67,97,238,.45);outline-offset:3px;border-radius:10px}

/* cabecera */
.top{position:sticky;top:0;z-index:40;background:rgba(245,246,252,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:22px;letter-spacing:-.4px}
.logo svg{width:36px;height:36px}
.logo b{color:var(--blue);font-weight:800}

/* hero */
.hero{padding:34px 0 10px;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:var(--blue-soft);color:var(--blue);font-weight:800;font-size:14px}
h1{font-size:clamp(28px,6.2vw,52px);line-height:1.1;letter-spacing:-1.2px;margin:16px auto 22px;max-width:900px;font-weight:800;text-wrap:balance}
h1 span{color:var(--blue)}
.video-card{position:relative;max-width:min(1040px,max(560px,calc((100svh - 300px) * 16 / 9)));margin:0 auto;border-radius:clamp(14px,2.4vw,26px);overflow:hidden;box-shadow:var(--shadow);background:#fff;aspect-ratio:16/9}
.video-card video{width:100%;height:100%;object-fit:cover}
.play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(rgba(26,27,75,0),rgba(26,27,75,.10));border:0;cursor:pointer;padding:0}
.play span{width:clamp(64px,11vw,92px);height:clamp(64px,11vw,92px);border-radius:50%;background:var(--blue);display:flex;align-items:center;justify-content:center;box-shadow:0 18px 40px rgba(67,97,238,.45);transition:transform .2s ease}
.play:hover span{transform:scale(1.07)}
.play svg{width:38%;height:38%;margin-left:6%}
.lead{font-size:clamp(17px,2.2vw,20px);color:var(--ink2);max-width:760px;margin:26px auto 22px}
.hero-ctas{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* secciones */
section{padding:64px 0}
.sec-head{text-align:center;max-width:760px;margin:0 auto 30px}
h2{font-size:clamp(26px,4.4vw,40px);line-height:1.15;letter-spacing:-.8px;margin:0 0 12px;font-weight:800}
h2 span{color:var(--blue)}
.sec-head p{margin:0;color:var(--ink2);font-size:clamp(16px,2vw,18px)}

/* ───── Prueba un ejercicio ───── */
.units{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:4px 0 10px}
.unit{flex:none;border:2px solid transparent;background:#fff;color:var(--ink2);padding:11px 18px;border-radius:999px;font-weight:800;font-size:15px;cursor:pointer;box-shadow:0 4px 12px rgba(31,38,135,.06)}
.unit[aria-selected="true"]{background:var(--blue);color:#fff;box-shadow:0 10px 22px rgba(67,97,238,.3)}
.exs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin:14px 0 22px}
.ex-pill{position:relative;background:#fff;border:2px solid transparent;border-radius:18px;padding:10px 10px 12px;cursor:pointer;text-align:left;box-shadow:0 4px 14px rgba(31,38,135,.06);transition:border-color .2s,transform .15s;display:flex;flex-direction:column;gap:8px;min-width:0}
.ex-pill:hover{transform:translateY(-2px)}
.ex-pill[aria-selected="true"]{border-color:var(--blue);box-shadow:0 10px 24px rgba(67,97,238,.18)}
.ex-thumb{height:78px;display:flex;align-items:center;justify-content:center}
.ex-thumb svg{width:100%;height:100%}
.ex-fmt{font-size:11.5px;font-weight:800;color:var(--blue);line-height:1.2;margin-bottom:-4px}
.ex-name{font-size:13.5px;font-weight:700;color:var(--ink);line-height:1.25}
.ex-done{position:absolute;top:8px;right:8px;width:22px;height:22px;border-radius:50%;background:var(--ok);display:none;align-items:center;justify-content:center}
.ex-pill.done .ex-done{display:flex}
.ex-done svg{width:14px;height:14px}
@media(max-width:699px){
  .exs{display:flex;overflow-x:auto;margin:10px -16px 18px;padding:4px 16px 10px;scrollbar-width:none;scroll-snap-type:x mandatory;scroll-padding-inline:16px}
  .exs::-webkit-scrollbar{display:none}
  .ex-pill{flex:0 0 150px;scroll-snap-align:start}
}

.player{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:18px;align-items:start}
@media(max-width:1023px){.player{grid-template-columns:1fr}}

.card{background:#fff;border-radius:var(--r);box-shadow:var(--shadow);border:1px solid var(--line)}
.ex-card{padding:clamp(18px,3vw,30px);min-width:0}
.ex-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:var(--blue-soft);color:var(--blue);font-weight:800;font-size:13.5px}
.meta{display:flex;align-items:center;gap:16px;font-size:14px;font-weight:700;color:var(--ink3)}
.dots{display:inline-flex;gap:5px;margin-left:6px;vertical-align:middle}
.dots i{width:9px;height:9px;border-radius:50%;background:var(--gray);display:inline-block}
.dots i.on{background:var(--blue)}
.tries i.bad{background:var(--bad)}.tries i.ok{background:var(--ok)}
.enun{font-size:clamp(19px,2.3vw,23px);font-weight:800;line-height:1.35;letter-spacing:-.2px;margin:0 0 16px}
.lamina{display:flex;justify-content:center;margin:6px 0 20px}
.lamina svg{width:100%;max-width:440px;height:auto;max-height:260px}
.lamina.ring svg{outline:3px dashed var(--blue);outline-offset:8px;border-radius:14px}

/* fracciones escritas */
.frac{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;line-height:1;font-weight:800;margin:0 .12em;font-size:.92em}
.frac>span{padding:0 .12em}
.frac+.pn{margin-left:-.2em}
.frac>span:first-child{border-bottom:.09em solid currentColor;padding-bottom:.08em;margin-bottom:.08em}

/* respuesta: opciones */
.opts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.opt{border:2.5px solid var(--gray);background:#fff;border-radius:18px;padding:16px 14px;font-size:clamp(17px,2vw,20px);font-weight:700;color:var(--ink);cursor:pointer;text-align:center;min-height:64px;display:flex;align-items:center;justify-content:center;gap:10px;transition:border-color .15s,background .15s}
.opt:hover{border-color:var(--blue-line)}
.opt.sel{border-color:var(--blue);background:var(--blue-soft)}
.opt.good{border-color:var(--ok);background:var(--ok-soft);color:var(--ok)}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.opt .box{width:22px;height:22px;border-radius:7px;border:2.5px solid var(--gray);flex:none;display:flex;align-items:center;justify-content:center}
.opt.sel .box{border-color:var(--blue);background:var(--blue)}
.opt.sel .box::after{content:"";width:6px;height:11px;border:solid #fff;border-width:0 3px 3px 0;transform:rotate(45deg) translate(-1px,-1px)}
.opt .frac{font-size:1.25em}
@media(max-width:560px){.opts{grid-template-columns:1fr}}
.hint-line{font-size:14px;color:var(--ink3);font-weight:700;margin:-6px 0 12px}

/* respuesta: número */
.num-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.num-row label{font-size:14px;font-weight:800;color:var(--ink3);width:100%}
.inp{font-family:inherit;font-size:clamp(24px,3vw,30px);font-weight:800;color:var(--ink);text-align:center;border:2.5px solid var(--gray);border-radius:16px;padding:10px 12px;width:170px;max-width:100%;background:#fff;outline:none}
.inp:focus{border-color:var(--blue);box-shadow:0 0 0 6px rgba(67,97,238,.13)}
.inp.good{border-color:var(--ok);background:var(--ok-soft);color:var(--ok)}
.inp.wrong{border-color:var(--bad);background:var(--bad-soft);color:var(--bad)}
.unit-lbl{font-size:20px;font-weight:700;color:var(--ink2)}

/* respuesta: huecos */
.gaps{font-size:clamp(18px,2.2vw,21px);font-weight:700;line-height:2.4}
.gaps .inp{font-size:clamp(19px,2.4vw,22px);padding:4px 8px;border-radius:12px;width:auto;min-width:3.2em;vertical-align:middle}

/* respuesta: clasificar */
.pool{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;min-height:62px;padding:10px;border-radius:16px;background:var(--gray-soft);margin-bottom:12px}
.tile{border:2.5px solid var(--blue);background:#fff;border-radius:14px;min-width:64px;padding:8px 12px;font-size:20px;cursor:grab;display:inline-flex;align-items:center;justify-content:center;color:var(--ink);touch-action:manipulation;user-select:none;-webkit-user-select:none}
.tile.picked{background:var(--blue);color:#fff;box-shadow:0 10px 22px rgba(67,97,238,.35);transform:translateY(-2px)}
.tile.good{border-color:var(--ok);color:var(--ok)}.tile.wrong{border-color:var(--bad);color:var(--bad)}
.bins{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.bin{border:2.5px dashed var(--blue-line);border-radius:16px;min-height:130px;padding:10px;display:flex;flex-direction:column;align-items:center;gap:8px;cursor:pointer;transition:background .15s,border-color .15s}
.bin.armed{border-color:var(--blue);background:rgba(67,97,238,.05)}
.bin.over{background:rgba(67,97,238,.08)}
.bin-lbl{font-size:15px;font-weight:800;color:var(--ink2);text-align:center}
.bin-body{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
@media(max-width:560px){.bins{grid-template-columns:1fr}.bin{min-height:88px}}

/* respuesta: ordenar */
.order{display:flex;flex-direction:column;gap:8px;max-width:420px}
.ord{display:flex;align-items:center;gap:10px;background:#fff;border:2.5px solid var(--gray);border-radius:14px;padding:8px 8px 8px 12px;cursor:grab;touch-action:none;-webkit-touch-callout:none;user-select:none;-webkit-user-select:none}
.order.locked .ord{cursor:default;touch-action:auto}
.ord .grip{display:grid;grid-template-columns:repeat(2,4px);gap:3px;flex:0 0 auto;margin-right:2px}
.ord .grip i{width:4px;height:4px;border-radius:50%;background:var(--ink3);opacity:.55}
.order.locked .grip{visibility:hidden}
.ord.dragging{opacity:.35;border-style:dashed}
.ord.ghost{transform:scale(1.03) rotate(-1deg);border-color:var(--blue)}
.ord .n{font-size:13px;font-weight:800;color:var(--ink3);width:18px}
.ord .v{flex:1;font-size:21px;font-weight:800}
.ord button{width:40px;height:40px;border-radius:12px;border:0;background:var(--gray-soft);color:var(--ink);font-size:18px;cursor:pointer}
.ord button:hover{background:var(--blue-soft);color:var(--blue)}
.ord button[disabled]{opacity:.3;cursor:default}
.order.good .ord{border-color:var(--ok)}.order.wrong .ord{border-color:var(--bad)}

/* pista y pie */
.pista{display:flex;gap:14px;align-items:flex-start;margin-top:18px;padding:16px 18px;border-radius:18px;background:var(--amber-soft);border:2px solid rgba(245,158,11,.35)}
.pista .ic{width:40px;height:40px;border-radius:12px;background:var(--amber);flex:none;display:flex;align-items:center;justify-content:center}
.pista .ic svg{width:22px;height:22px}
.pista b{display:block;color:var(--amber-ink);font-size:14px;margin-bottom:2px}
.pista p{margin:0;font-size:16px;font-weight:600;line-height:1.45}
.sol{margin-top:14px;padding:14px 18px;border-radius:16px;background:var(--gray-soft);font-weight:700;font-size:16px}
.ex-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line);flex-wrap:wrap}
.fb{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;font-weight:800;font-size:15px}
.fb.ok{background:var(--ok-soft);color:var(--ok)}.fb.bad{background:var(--bad-soft);color:var(--bad)}
.fb svg{width:18px;height:18px}
.foot-btns{display:flex;gap:10px;margin-left:auto;flex-wrap:wrap}
.shake{animation:shake .45s}
@keyframes shake{20%{transform:translateX(-8px)}40%{transform:translateX(7px)}60%{transform:translateX(-5px)}80%{transform:translateX(3px)}}

/* ───── Cinki ───── */
.cinki{display:flex;flex-direction:column;height:620px;max-height:80vh;overflow:hidden;transition:box-shadow .3s,border-color .3s}
.cinki.on{border:2px solid var(--blue-line);box-shadow:var(--shadow),0 0 0 8px rgba(67,97,238,.07)}
@media(max-width:1023px){.cinki{height:auto;max-height:none}.msgs{max-height:420px}}
.c-head{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line)}
.c-av{width:46px;height:46px;border-radius:14px;background:var(--blue-soft);display:flex;align-items:center;justify-content:center;flex:none}
.c-av svg{width:36px;height:36px}
.c-name{font-weight:800;font-size:18px}
.c-sub{font-size:14px;color:var(--ink3);font-weight:700}
.c-state{margin-left:auto;display:flex;align-items:center;gap:7px;font-size:13px;font-weight:700;color:var(--ok)}
.c-state i{width:9px;height:9px;border-radius:50%;background:var(--ok)}
.msgs{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px;scroll-behavior:smooth;min-height:180px}
.msg{max-width:88%;padding:11px 15px;border-radius:18px;font-size:15.5px;font-weight:600;line-height:1.42;animation:up .25s ease}
.msg.c{background:var(--blue-soft);align-self:flex-start;border-bottom-left-radius:6px}
.msg.a{background:var(--blue);color:#fff;align-self:flex-end;border-bottom-right-radius:6px}
.msg.sys{align-self:center;background:transparent;color:var(--ink3);font-size:14px;font-weight:700;padding:2px 8px;text-align:center}
.typing{display:inline-flex;gap:5px;padding:14px 16px}
.typing i{width:8px;height:8px;border-radius:50%;background:var(--blue);opacity:.5;animation:blink 1s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes blink{50%{opacity:1;transform:translateY(-3px)}}
@keyframes up{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.c-form{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}
.c-form input{flex:1;min-width:0;font-family:inherit;font-size:16px;font-weight:600;border:0;background:var(--gray-soft);border-radius:999px;padding:13px 18px;color:var(--ink);outline:none}
.c-form input:focus{box-shadow:0 0 0 3px rgba(67,97,238,.25)}
.c-form button{width:48px;height:48px;border-radius:50%;border:0;background:var(--blue);display:flex;align-items:center;justify-content:center;cursor:pointer;flex:none}
.c-form button[disabled]{opacity:.4;cursor:default}
.c-form button svg{width:22px;height:22px}

/* ───── Cómo funciona ───── */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.step{padding:26px 24px}
.step .n{width:44px;height:44px;border-radius:14px;background:var(--blue);color:#fff;font-weight:800;font-size:20px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.step h3{margin:0 0 6px;font-size:20px;letter-spacing:-.3px}
.step p{margin:0;color:var(--ink2);font-size:16px}
@media(max-width:640px){.steps{grid-template-columns:1fr}}

/* ───── Profesor ───── */
.shots{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.shot{overflow:hidden}
.shot img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;object-position:center top;background:var(--gray-soft)}
.shot div{padding:16px 20px 20px}
.shot h3{margin:0 0 4px;font-size:18px}
.shot p{margin:0;color:var(--ink2);font-size:15px}
@media(max-width:860px){.shots{grid-template-columns:1fr}}

/* ───── Cierre ───── */
.road{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:0 0 26px}
.road span{padding:9px 16px;border-radius:999px;background:#fff;border:2px dashed #cfd2f2;color:var(--ink2);font-weight:700;font-size:15px}
.road span.now{border:2px solid var(--blue-line);color:var(--blue);background:var(--blue-soft)}
.road small{font-weight:800;color:#7c5cff;margin-left:6px}
.final{text-align:center;padding:48px 20px;margin:0 auto;max-width:900px}
.final .cinki-big{width:92px;height:92px;margin:0 auto 12px}
footer{padding:28px 0 40px;text-align:center;color:var(--ink3);font-size:14px}
footer a{color:var(--ink2)}
footer p{margin:6px 0}

/* revisión del 25-09-2026 */
#exCard,#cinkiBox{scroll-margin-top:82px}
#prueba{scroll-margin-top:66px}
footer a{display:inline-block;padding:10px 4px}
@media(max-width:560px){
  section{padding:44px 0}
  .ex-foot{flex-direction:column;align-items:stretch}
  .foot-btns{margin-left:0;display:grid;gap:10px}
  .foot-btns .btn{width:100%}
  #fb{align-self:flex-start}
}
@media(min-width:641px) and (max-width:900px){.step{padding:22px 18px}.step h3{font-size:18px}.step p{font-size:15px}}

/* formatos nuevos y arrastre real */
.tile{touch-action:none;-webkit-touch-callout:none}
.tile.dragging{opacity:.35}
.ghost{position:fixed;left:0;top:0;z-index:200;pointer-events:none;margin:0;transform:rotate(-3deg) scale(1.06);box-shadow:0 18px 36px rgba(31,38,135,.28);background:#fff}
.bin.over,.slot.over,.pool.over{background:rgba(67,97,238,.10);border-color:var(--blue)}
.tile-wide{font-size:17px;font-weight:700;padding:10px 14px;min-width:0}
.pairs{display:flex;flex-direction:column;gap:10px;margin-bottom:14px}
.pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:12px;align-items:center}
.p-left{font-size:16px;font-weight:700;line-height:1.35;padding:12px 14px;border-radius:14px;background:var(--gray-soft)}
.slot{min-height:54px;border:2.5px dashed var(--blue-line);border-radius:14px;display:flex;align-items:center;justify-content:center;padding:4px;cursor:pointer;transition:background .15s,border-color .15s}
.slot.armed{border-color:var(--blue);background:rgba(67,97,238,.05)}
.slot .tile{width:100%}
.slot.good{border-style:solid;border-color:var(--ok);background:var(--ok-soft)}
.slot.wrong{border-style:solid;border-color:var(--bad);background:var(--bad-soft)}
@media(max-width:560px){.pair{grid-template-columns:1fr;gap:6px}}
.toks{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;padding:6px 0}
.tok{border:2.5px solid var(--gray);background:#fff;border-radius:14px;min-width:64px;padding:10px 16px;font-size:22px;font-weight:800;color:var(--ink);cursor:pointer}
.tok.sel{border-color:var(--blue);background:var(--blue-soft)}
.tok.good{border-color:var(--ok);background:var(--ok-soft);color:var(--ok)}
.tok.wrong{border-color:var(--bad);background:var(--bad-soft);color:var(--bad)}
.ex-thumb svg{max-height:78px}

/* ───── Qué recibes al pedir la demo + preguntas frecuentes (25-09-2026) ───── */
.demo-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:6px auto 26px;max-width:780px;text-align:left}
.demo-steps>div{background:var(--blue-soft);border-radius:18px;padding:16px 16px 18px}
.demo-steps .n{display:inline-flex;width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;font-weight:800;font-size:15px;align-items:center;justify-content:center;margin-bottom:10px}
.demo-steps b{display:block;font-size:16px;color:var(--ink);margin-bottom:4px;line-height:1.3}
.demo-steps p{margin:0;font-size:14.5px;color:var(--ink2);line-height:1.45}
.demo-note{margin:14px auto 0;font-size:14.5px;color:var(--ink3);font-weight:700;max-width:620px}
@media(max-width:720px){.demo-steps{grid-template-columns:1fr;gap:10px}.demo-steps>div{display:grid;grid-template-columns:30px 1fr;column-gap:12px;padding:14px}.demo-steps .n{grid-row:span 2;margin:0}.demo-steps b{margin:4px 0 2px}}
.faq{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 4px 14px rgba(31,38,135,.05)}
.faq summary{list-style:none;cursor:pointer;padding:18px 58px 18px 22px;font-weight:800;font-size:17px;color:var(--ink);position:relative;line-height:1.35;border-radius:18px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:24px;top:50%;width:10px;height:10px;border-right:3px solid var(--blue);border-bottom:3px solid var(--blue);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-25%) rotate(-135deg)}
.faq summary:focus-visible{outline:3px solid var(--blue-line);outline-offset:2px}
.faq .resp{padding:0 22px 20px;color:var(--ink2);font-size:16px;line-height:1.55}
.faq .resp p{margin:0}.faq .resp p+p{margin-top:8px}
@media(max-width:560px){.faq summary{font-size:16px;padding:16px 50px 16px 18px}.faq .resp{padding:0 18px 18px;font-size:15.5px}}

/* ───── Ventana «Quiero probarlo» (28-09-2026): formulario mini + comunidad de WhatsApp ───── */
html.acc-on,html.acc-on body{overflow:hidden}
.acc{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:16px}
.acc[hidden]{display:none}
.acc-bg{position:absolute;inset:0;background:rgba(18,20,56,.52);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);opacity:0;transition:opacity .2s ease}
.acc-card{position:relative;width:100%;max-width:480px;max-height:calc(100vh - 32px);max-height:calc(100dvh - 32px);overflow-y:auto;overscroll-behavior:contain;background:#fff;border-radius:26px;box-shadow:0 40px 90px rgba(9,14,52,.32);padding:34px 30px 26px;opacity:0;transform:translateY(14px) scale(.98);transition:opacity .22s ease,transform .22s ease}
.acc.in .acc-bg{opacity:1}
.acc.in .acc-card{opacity:1;transform:none}
.acc-card:focus{outline:none}
.acc-x{position:absolute;top:12px;right:12px;width:44px;height:44px;border:0;border-radius:50%;background:var(--gray-soft);color:var(--ink2);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:2}
.acc-x:hover{background:var(--gray);color:var(--ink)}
.acc-x svg{width:18px;height:18px}
.acc-paso[hidden]{display:none}
.acc-kick{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:800;color:var(--blue);background:var(--blue-soft);padding:7px 13px;border-radius:999px;margin-right:40px}
.acc-kick i{width:8px;height:8px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px rgba(67,97,238,.18)}
.acc h2{font-size:28px;line-height:1.15;letter-spacing:-.02em;font-weight:800;margin:14px 0 8px;color:var(--ink)}
.acc h2:focus{outline:none}
.acc-sub{margin:0 0 20px;font-size:15.5px;line-height:1.55;color:var(--ink2);font-weight:600}
.fdemo{display:flex;flex-direction:column;gap:14px;text-align:left;position:relative}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:800;color:var(--ink2)}
.field .lbl-sub{font-weight:600;color:var(--ink3)}
.field input{font-family:inherit;font-size:16px;font-weight:600;color:var(--ink);padding:13px 15px;border:2px solid #dfe2f2;border-radius:14px;background:#fbfbfe;width:100%;transition:border-color .15s,box-shadow .15s}
.field input:focus{outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(67,97,238,.12)}
.field input.mal{border-color:#e5484d;box-shadow:0 0 0 4px rgba(229,72,77,.12)}
.telbox{display:flex;gap:10px}
.telbox input{flex:1;min-width:0;letter-spacing:.02em}
.pais{position:relative;flex:none}
.paisbtn{display:flex;align-items:center;gap:7px;height:100%;min-height:52px;font-family:inherit;font-size:16px;font-weight:700;color:var(--ink);background:#fbfbfe;border:2px solid #dfe2f2;border-radius:14px;padding:0 12px 0 14px;cursor:pointer}
.paisbtn:focus-visible{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(67,97,238,.12)}
.paisbtn .bnd{font-size:19px;line-height:1}
.paisbtn .chev{width:15px;height:15px;stroke:var(--ink3);stroke-width:2.6;fill:none;stroke-linecap:round;transition:transform .18s}
.paisbtn[aria-expanded="true"] .chev{transform:rotate(180deg)}
.paislista{position:absolute;z-index:20;top:calc(100% + 8px);left:0;width:300px;max-width:calc(100vw - 96px);background:#fff;border-radius:16px;box-shadow:0 26px 60px rgba(9,14,52,.24);border:1px solid var(--line);padding:10px;color:var(--ink);text-align:left}
.paislista.arriba{top:auto;bottom:calc(100% + 8px)}
.paislista[hidden]{display:none}
.paislista input{width:100%;font-family:inherit;font-size:16px;font-weight:600;color:var(--ink);background:#f5f6fc;border:2px solid #dfe2f2;border-radius:11px;padding:10px 12px}
.paislista input:focus{outline:none;border-color:var(--blue);background:#fff}
.paislista ul{list-style:none;margin:8px 0 0;padding:0;max-height:220px;overflow-y:auto;overscroll-behavior:contain}
.paislista li{display:flex;align-items:center;gap:10px;padding:10px 11px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;line-height:1.25}
.paislista li:hover,.paislista li.foco{background:var(--blue-soft)}
.paislista li[aria-selected="true"]{background:var(--blue);color:#fff}
.paislista li .bnd{font-size:18px;line-height:1;flex:none}
.paislista li .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.paislista li .pfj{color:var(--ink3);font-weight:700;flex:none}
.paislista li[aria-selected="true"] .pfj{color:rgba(255,255,255,.8)}
.paislista .nada{padding:12px 11px;font-size:14.5px;color:var(--ink3);font-weight:600}
.ferr{display:none;font-size:13px;font-weight:700;color:#d6333a;margin:2px 0 0}
.ferr.show{display:block}
.ferr-envio{text-align:center;margin:-4px 0 0}
.fdemo .btn{width:100%;margin-top:4px;font-size:17px}
.fdemo .btn[disabled]{opacity:.65;cursor:default}
.flegal{margin:0;font-size:13px;line-height:1.55;color:var(--ink3);font-weight:600;text-align:center}
.flegal a{color:var(--ink2);text-decoration:underline;display:inline-block;padding:4px 2px}
.hp{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);border:0;opacity:0;pointer-events:none}
/* paso 2: la comunidad */
#accPaso2{text-align:center}
.acc-ok{width:58px;height:58px;border-radius:18px;background:var(--ok);color:#fff;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 12px 26px rgba(22,163,74,.28)}
.acc-ok svg{width:30px;height:30px}
.acc-hola{margin:14px 0 0;font-size:15px;font-weight:800;color:var(--ok)}
#accPaso2 h2{margin-top:4px}
.acc-list{list-style:none;margin:14px 0 22px;padding:0;display:flex;flex-direction:column;gap:10px;text-align:left}
.acc-list li{display:flex;gap:11px;align-items:flex-start;font-size:15.5px;line-height:1.45;font-weight:600;color:var(--ink2)}
.acc-list svg{flex:none;width:22px;height:22px;padding:4px;border-radius:50%;background:var(--ok-soft);color:var(--ok);margin-top:1px}
.btn-wa{width:100%;background:#25d366;color:#fff;font-size:17px;box-shadow:0 12px 26px rgba(37,211,102,.34)}
.btn-wa:hover{background:#1ebe5b;box-shadow:0 16px 32px rgba(37,211,102,.4)}
.btn-wa svg{width:22px;height:22px;flex:none}
.btn-wa[hidden],.acc-qr[hidden]{display:none}
.acc-qr{display:none;align-items:center;gap:16px;text-align:left;margin-top:16px;padding:14px;border-radius:18px;background:var(--gray-soft)}
.acc-qr img{width:112px;height:112px;flex:none;border-radius:10px;background:#fff;padding:6px}
.acc-qr p{margin:0;font-size:14.5px;line-height:1.5;color:var(--ink2);font-weight:600}
.acc-qr b{display:block;color:var(--ink);margin-bottom:2px}
@media (hover:hover) and (pointer:fine) and (min-width:720px){.acc-qr{display:flex}}
.acc-nota{margin:16px 0 0;font-size:14px;line-height:1.5;color:var(--ink3);font-weight:600}
.acc-otro{margin-top:6px;border:0;background:none;font-size:13.5px;font-weight:700;color:var(--ink3);text-decoration:underline;cursor:pointer;padding:10px 6px}
.acc-otro:hover{color:var(--ink2)}
@media(max-width:480px){
  .acc{padding:10px}
  .acc-card{padding:28px 20px 20px;border-radius:22px;max-height:calc(100vh - 20px);max-height:calc(100dvh - 20px)}
  .acc h2{font-size:24px}
  .acc-sub{font-size:15px;margin-bottom:16px}
}
@media (prefers-reduced-motion:reduce){.acc-bg,.acc-card{transition:none}}

/* ───── Idiomas (28-09-2026): botón con la bandera del idioma; desplegable con banderas y nombres ───── */
.top-r{display:flex;align-items:center;gap:10px}
.lang{position:relative}
.flag{display:inline-flex;width:24px;height:24px;border-radius:50%;overflow:hidden;box-shadow:inset 0 0 0 1px rgba(26,27,75,.14);flex:none}
.flag svg{width:100%;height:100%;display:block}
.lang-btn{display:inline-flex;align-items:center;gap:6px;height:44px;padding:0 10px 0 9px;border:2px solid var(--blue-line);border-radius:999px;background:#fff;cursor:pointer;font-family:inherit}
.lang-btn:hover{border-color:var(--blue)}
.lang-btn .chev{width:14px;height:14px;stroke:var(--ink3);stroke-width:2.8;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s}
.lang-btn[aria-expanded="true"] .chev{transform:rotate(180deg)}
.lang-list{position:absolute;right:0;top:calc(100% + 8px);margin:0;padding:8px;list-style:none;min-width:180px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 20px 50px rgba(9,14,52,.2);z-index:60}
.lang-list[hidden]{display:none}
.lang-list li{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:10px;font-size:15px;font-weight:700;color:var(--ink);cursor:pointer;white-space:nowrap}
.lang-list li:hover,.lang-list li:focus-visible{background:var(--blue-soft);outline:none}
.lang-list li[aria-selected="true"]{color:var(--blue)}
.lang-list li[aria-selected="true"]::after{content:"";margin-left:auto;width:7px;height:12px;border-right:3px solid var(--blue);border-bottom:3px solid var(--blue);transform:rotate(45deg) translate(-2px,-2px)}
@media(max-width:400px){.top .btn-sm{padding:11px 14px}}