:root{--g:#39ff7a;--g2:#18b857;--gold:#f7c84b;--bg:#000605;--card:rgba(0,28,22,.74);--line:rgba(57,255,122,.32);--text:#f3f4f3;--muted:#c9d0cf}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 70% 0,#073242 0,#00110f 34%,#000 78%);font-family:Rajdhani,Arial,sans-serif;color:var(--text)}
.page{max-width:1180px;margin:0 auto;padding:24px 26px 30px;position:relative;overflow:hidden;background:linear-gradient(90deg,rgba(0,0,0,.96),rgba(0,18,17,.9) 48%,rgba(0,0,0,.95));border-radius:0 0 10px 10px}
.hero{height:345px;position:relative;overflow:hidden}.logo{width:305px;height:auto;position:relative;z-index:5;display:block;margin-top:4px}.world{position:absolute;right:-10px;top:-24px;width:645px;height:330px;object-fit:cover;object-position:center;z-index:1;filter:drop-shadow(0 0 18px #00cfff88);-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 18%,#000 100%),linear-gradient(180deg,#000 0%,#000 78%,transparent 100%);mask-image:linear-gradient(90deg,transparent 0%,#000 18%,#000 100%),linear-gradient(180deg,#000 0%,#000 78%,transparent 100%);-webkit-mask-composite:source-in;mask-composite:intersect}.hero:before{content:"";position:absolute;inset:-28px -26px auto;height:415px;background:radial-gradient(circle at 83% 36%,rgba(0,255,150,.18),transparent 18%),radial-gradient(circle at 78% 8%,rgba(0,180,255,.16),transparent 28%);pointer-events:none;z-index:0}.hero:after{content:"";position:absolute;inset:0;background-image:radial-gradient(#fff 1px,transparent 1px),radial-gradient(#f4c64b 1px,transparent 1px);background-size:125px 105px,155px 135px;opacity:.42;z-index:0}.hero-content{position:absolute;left:5px;top:76px;z-index:6}.start-label{width:270px;height:38px;object-fit:contain;object-position:left}.hero h1{font-family:Bebas Neue,sans-serif;font-size:82px;line-height:.9;margin:12px 0 18px;letter-spacing:2px;text-shadow:0 4px 18px #000}.hero h1 span{color:var(--g);font-style:italic;text-shadow:0 0 22px #28ff73}.hero p{font-size:28px;line-height:1.17;margin:0;text-shadow:0 3px 12px #000}.hero b{color:var(--g)}
.card-glass{background:linear-gradient(135deg,rgba(0,35,27,.82),rgba(0,10,9,.9));border:1px solid var(--line);box-shadow:0 0 28px rgba(0,255,120,.08),inset 0 0 30px rgba(0,255,120,.04);border-radius:18px}.objetivo{position:absolute;right:22px;bottom:34px;width:315px;display:flex;gap:16px;padding:16px 18px;align-items:center;z-index:7}.objetivo img{width:52px}.objetivo h4,.stats h4,.reward h4{margin:0 0 5px;color:var(--g);font-family:Orbitron,sans-serif;font-size:12px}.objetivo p{font-size:17px;line-height:1.25;margin:0}
.stats{min-height:122px;margin-top:-2px;display:grid;grid-template-columns:1.2fr 1fr 1.15fr 1fr;padding:18px 24px;gap:0;position:relative;z-index:3}.stat{display:flex;align-items:center;gap:18px;border-right:1px solid rgba(255,255,255,.13);padding:0 20px}.stat:first-child{padding-left:0}.stat:last-child{border-right:0}.stat img{width:68px;height:68px;object-fit:contain;filter:drop-shadow(0 0 10px rgba(57,255,122,.24))}.stat .big{font-size:35px;font-weight:800;line-height:1}.stat small{font-size:13px;color:var(--muted);font-weight:700}.stat p{margin:8px 0 0;font-size:15px;color:var(--muted);line-height:1.32}.stat b{color:var(--g)}.rank{font-size:29px;font-weight:900}.bar{width:132px;height:10px;border-radius:20px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:11px}.bar i{display:block;width:42%;height:100%;background:linear-gradient(90deg,var(--g2),#7cff9c);border-radius:inherit}
.level{margin-top:16px;display:grid;grid-template-columns:165px 1fr 205px;gap:18px;padding:20px 20px 16px}.level-head{text-align:center;margin-bottom:14px}.level-head span{font-family:Orbitron,sans-serif;color:var(--g);font-weight:900;letter-spacing:4px;font-size:21px}.level-head h2{font-size:31px;letter-spacing:3px;margin:7px 0}.level-head p{font-size:17px;line-height:1.22;color:#d8dddd;max-width:760px;margin:0 auto}.timeline{position:relative;min-width:170px}.timeline-line{position:absolute;left:31px;width:5px;border-radius:8px;background:linear-gradient(var(--g),var(--g),var(--gold));box-shadow:0 0 15px var(--g);z-index:0}.tl-item,.tl-reward{display:grid;grid-template-columns:68px 1fr;column-gap:8px;align-items:center;position:absolute;left:0;width:100%}.tl-item strong,.tl-reward strong{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,#8cff9c,#25dc62 65%,#08772c);color:#031108;font-size:32px;font-weight:900;box-shadow:0 0 20px #37ff77;border:1px solid #77ff9e;z-index:2;justify-self:start}.tl-reward strong{background:radial-gradient(circle,#fff274,#f5ca37 60%,#956700);box-shadow:0 0 22px #f7d84d}.tl-item div,.tl-reward div{align-self:center;padding-top:1px}.tl-item b,.tl-reward b{display:block;color:var(--g);font-size:17px;line-height:1.05;white-space:nowrap}.tl-reward b{color:#ffd944}.tl-item span,.tl-reward span{display:block;color:#d7dddc;font-size:14px;margin-top:6px;line-height:1.12;max-width:92px}
.lesson{display:grid;grid-template-columns:270px 1fr auto;gap:18px;align-items:center;margin-bottom:10px;padding:8px 12px 8px 8px;border-radius:12px;background:linear-gradient(90deg,rgba(1,45,34,.75),rgba(0,15,14,.78));border:1px solid rgba(57,255,122,.25)}.thumb{height:116px;border:1px solid rgba(255,255,255,.13);border-radius:9px;overflow:hidden;position:relative;background:#07100f}.thumb img{width:100%;height:100%;object-fit:cover;display:block}.thumb button{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:58px;height:58px;border-radius:50%;border:2px solid rgba(255,255,255,.65);background:rgba(0,0,0,.55);color:#fff;font-size:27px}.thumb em{position:absolute;left:10px;bottom:8px;font-style:normal;font-size:11px;background:rgba(0,0,0,.68);border:1px solid rgba(255,255,255,.35);border-radius:16px;padding:4px 9px}.lesson h3{font-size:23px;margin:0 0 6px;line-height:1.05}.lesson p{font-size:15px;color:#cdd4d3;line-height:1.22;margin:0}.ok,.doing,.locked{font-family:Orbitron,sans-serif;font-size:11px;font-weight:900;border-radius:8px;padding:11px 14px;white-space:nowrap}.ok{color:var(--g);border:1px solid var(--line);background:rgba(0,35,23,.6)}.doing{color:#ffd94a;border:1px solid rgba(255,217,74,.5);background:rgba(90,65,0,.22)}.locked{color:#aab2b0;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.03)}
.reward{padding:16px 18px;border-color:rgba(247,200,75,.65);background:linear-gradient(180deg,rgba(53,44,10,.45),rgba(0,19,15,.92));align-self:start;min-height:805px}.cup{width:100%;height:158px;object-fit:contain}.reward h3{font-size:42px;margin:10px 0 7px}.reward p{font-size:18px;line-height:1.23;margin:0 0 22px;color:#edf1ef}.reward hr{border:0;border-top:1px solid rgba(255,255,255,.14);margin:0 0 20px}.reward ul{list-style:none;padding:0;margin:0}.reward li{font-size:17px;margin:16px 0;color:#f1f5f4}.reward li:before{content:"○";color:#6f7a78;margin-right:12px}.reward li.done:before{content:"✓";color:var(--g);font-weight:900}.coin{width:132px;display:block;margin:30px auto 18px}.mini{font-size:13px;color:#d4e886;border:1px solid var(--line);border-radius:12px;padding:15px;background:rgba(35,80,20,.25)}
.benefits{margin-top:16px;display:grid;grid-template-columns:repeat(4,1fr);padding:18px 24px;gap:16px}.benefits div{display:grid;grid-template-columns:56px 1fr;column-gap:13px;align-items:center;border-right:1px solid rgba(255,255,255,.14)}.benefits div:last-child{border-right:0}.benefits img{grid-row:1/3;width:50px;height:50px;object-fit:contain;filter:drop-shadow(0 0 8px rgba(57,255,122,.28))}.benefits b{font-size:15px;color:var(--g)}.benefits span{font-size:15px;color:#d9dfde;line-height:1.22}footer{text-align:center;padding-top:22px}footer h3{font-family:Orbitron,sans-serif;color:var(--g);letter-spacing:5px;font-size:23px;margin:0 0 10px}footer p{font-size:27px;letter-spacing:4px;margin:0}footer b{color:var(--g)}

/* reward-top: desktop = columna centrada, mobile = fila */
.reward-top{display:flex;flex-direction:column;align-items:center;text-align:center}
.reward-top-text h4{margin:0 0 5px;color:var(--g);font-family:Orbitron,sans-serif;font-size:12px}
.reward-top-text h3{font-size:42px;margin:0 0 7px}
.reward-top-text p{font-size:18px;line-height:1.23;margin:0 0 22px;color:#edf1ef}
.reward-bottom{display:flex;flex-direction:column;align-items:center}
.objetivo-mobile-inline{display:none}
@media(max-width:900px){
/* PAGE */
.page{padding:20px 14px}

/* HERO */
.hero{height:auto;padding-bottom:90px}
.start-label{display:none}
.logo{width:220px}
.world{width:380px;right:-100px;top:10px;opacity:.85}
.hero-content{position:relative;top:16px}
.hero h1{font-size:52px}
.hero p{font-size:19px}

/* OBJETIVO: en desktop es absolute dentro del hero, en mobile lo ocultamos ahí
   y mostramos el .objetivo-mobile-inline debajo del hero */
.objetivo{display:none}
.objetivo-mobile-inline{display:flex;position:static;width:auto;margin-top:12px;padding:14px 16px}
.objetivo-mobile-inline img{width:44px}
.objetivo-mobile-inline h4{font-size:11px}
.objetivo-mobile-inline p{font-size:15px}

/* STATS: 1 columna, cada stat en fila horizontal compacta */
.stats{grid-template-columns:1fr;padding:0;gap:0}
.stat{display:flex;flex-direction:row;align-items:center;gap:14px;
  border-right:0;border-bottom:1px solid rgba(255,255,255,.1);
  padding:14px 16px}
.stat:last-child{border-bottom:0}
.stat img{width:52px;height:52px;flex-shrink:0}
.stat .big{font-size:28px}
.stat small{font-size:12px}
.stat p{margin:6px 0 0;font-size:14px;line-height:1.25}
.bar{width:100px;margin-top:8px}
.rank{font-size:24px}

/* LEVEL */
.level{grid-template-columns:1fr;padding:16px}
.timeline{display:none}

/* LESSON mobile: imagen arriba full, texto + badge abajo */
.lesson{grid-template-columns:1fr;grid-template-rows:auto auto auto;gap:0;padding:0;overflow:hidden}
.lesson .thumb{height:175px;border-radius:10px 10px 0 0;border:0}
.lesson .lesson-text{padding:10px 14px 6px}
.lesson .ok,.lesson .doing,.lesson .locked{margin:0 14px 12px;align-self:start;width:fit-content}

/* REWARD mobile */
.reward{min-height:auto;padding:20px 18px}
.reward-top{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.cup{width:88px;height:88px;object-fit:contain;flex-shrink:0;margin:0}
.reward-top-text h4{margin:0 0 4px;color:var(--g);font-family:Orbitron,sans-serif;font-size:12px}
.reward-top-text h3{font-size:36px;margin:0 0 4px;line-height:1}
.reward-top-text p{font-size:15px;margin:0;color:#edf1ef}
.reward > .cup,.reward > h4,.reward > h3,.reward > p{display:none}

/* Lista + NRC coin en fila: lista a la izquierda, coin a la derecha */
.reward-list-row{display:flex;align-items:center;gap:12px}
.reward-list-row ul{flex:1;margin:0;padding:0;list-style:none}
.reward-list-row ul li{font-size:16px;margin:14px 0;color:#f1f5f4}
.reward-list-row ul li:before{content:"○";color:#6f7a78;margin-right:12px}
.reward-list-row ul li.done:before{content:"✓";color:var(--g);font-weight:900}
.reward-list-row .coin{width:90px;flex-shrink:0;margin:0;display:block}

/* Mini texto centrado debajo */
.mini{font-size:13px;text-align:center;margin-top:18px;display:block}
.reward-bottom{display:none}

/* Benefits: 2 col */
.benefits{grid-template-columns:1fr 1fr;padding:14px 16px}
.benefits div{border-right:0;border-bottom:1px solid rgba(255,255,255,.12);padding:10px 0}
.benefits div:nth-child(odd){border-right:1px solid rgba(255,255,255,.12)}
.benefits div:nth-child(3),.benefits div:nth-child(4){border-bottom:0}
.benefits div{grid-template-columns:44px 1fr}
}

/* ══════════════════════════════
   MODAL DE VIDEO
══════════════════════════════ */
.nr-modal-overlay{display:none;position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.88);align-items:center;justify-content:center;padding:20px}
.nr-modal-overlay.open{display:flex}
.nr-modal-box{position:relative;width:100%;max-width:960px;background:#000;border-radius:14px;border:1px solid rgba(57,255,122,.3);box-shadow:0 0 60px rgba(0,255,100,.15);overflow:hidden}
.nr-modal-close{position:absolute;top:12px;right:14px;z-index:10;background:rgba(0,0,0,.7);border:1px solid rgba(255,255,255,.25);color:#fff;font-size:20px;width:38px;height:38px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;line-height:1;transition:background .2s}
.nr-modal-close:hover{background:rgba(57,255,122,.2);border-color:var(--g)}
.nr-iframe-wrap{position:relative;padding-bottom:56.25%;height:0;overflow:hidden}
.nr-iframe-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* THUMBNAIL CLICKEABLE */
.thumb-clickable{cursor:pointer}
.thumb-clickable:hover img{filter:brightness(.75)}
.thumb-clickable:hover button{background:rgba(57,255,122,.25);border-color:var(--g);color:var(--g)}

/* LESSON MATERIAL CLICKEABLE */
.lesson-clickable{cursor:pointer;transition:border-color .2s}
.lesson-clickable:hover{border-color:rgba(57,255,122,.55)}

/* TIMELINE ITEMS COMPLETADOS */
.tl-item.done strong{background:radial-gradient(circle,#fff,#a0ffc0 60%,#25a855);box-shadow:0 0 24px #37ff77}
.tl-item.done b{color:#adffd0}

/* START · selector dinámico de 4 niveles · 2026-07-28 */
.start-level-switcher{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;padding:12px;margin:16px 0}.start-level-tab{min-height:92px;border:1px solid rgba(255,255,255,.15);border-radius:11px;background:linear-gradient(160deg,rgba(0,44,33,.75),rgba(0,13,12,.88));color:#fff;text-align:left;padding:12px;cursor:pointer;transition:.18s}.start-level-tab:hover,.start-level-tab.active{border-color:var(--g);box-shadow:0 0 18px rgba(57,255,122,.18);transform:translateY(-1px)}.start-level-tab span{display:block;color:var(--g);font:700 10px Orbitron,sans-serif;letter-spacing:.08em}.start-level-tab b{display:block;font-size:14px;line-height:1.1;margin:7px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.start-level-tab small{color:#9fb1ad;font-size:10px}.start-level-tab.locked{opacity:.46;filter:grayscale(.4);cursor:not-allowed}.start-level-message{position:sticky;top:12px;z-index:50;margin:0 auto 12px;max-width:680px;padding:12px 16px;border:1px solid rgba(255,210,74,.55);border-radius:10px;background:rgba(39,31,2,.96);color:#ffe074;text-align:center;font-weight:700;box-shadow:0 10px 30px rgba(0,0,0,.35)}
@media(max-width:900px){.start-level-switcher{grid-template-columns:1fr 1fr;padding:9px}.start-level-tab{min-height:82px;padding:10px}.start-level-tab b{font-size:12px}}
@media(max-width:480px){.start-level-switcher{grid-template-columns:1fr}.start-level-tab{min-height:auto}.start-level-tab b{white-space:normal}}

/* ═══════════════════════════════════════════════════════════════
   START v2 · secuencia, reclamo y siguiente nivel · 2026-07-28
═══════════════════════════════════════════════════════════════ */
.reward-column{display:flex;flex-direction:column;gap:18px;align-self:stretch;min-width:0}
.reward-column .reward{width:100%;box-sizing:border-box}
.lesson{transition:border-color .2s,box-shadow .2s,transform .2s,background .2s}
.lesson.interactive{cursor:pointer}
.lesson.interactive:hover{border-color:rgba(57,255,122,.95);box-shadow:0 0 24px rgba(57,255,122,.22),inset 0 0 18px rgba(57,255,122,.045);transform:translateY(-1px);background:linear-gradient(90deg,rgba(1,61,43,.86),rgba(0,20,17,.9))}
.lesson.interactive:hover .thumb{border-color:rgba(57,255,122,.75);box-shadow:0 0 14px rgba(57,255,122,.18)}
.lesson.blocked{cursor:not-allowed;opacity:.72;filter:saturate(.72)}
.lesson.blocked:hover{border-color:rgba(57,255,122,.25);box-shadow:none;transform:none}
.lesson.completed-final{cursor:default}
.lesson.completed-final:hover{border-color:rgba(57,255,122,.25);box-shadow:none;transform:none}
.lesson.reward-claimable{border-color:rgba(255,217,74,.7);box-shadow:0 0 20px rgba(255,217,74,.12)}
.lesson.reward-claimable:hover{border-color:#ffe05b;box-shadow:0 0 28px rgba(255,217,74,.24);background:linear-gradient(90deg,rgba(70,52,2,.45),rgba(0,22,16,.92))}
.lesson.reward-claimed{border-color:rgba(57,255,122,.55)}
.reward-action{border:1px solid transparent;cursor:default}
.reward-action.claim{font-family:Orbitron,sans-serif;font-size:11px;font-weight:900;border-radius:8px;padding:11px 14px;white-space:nowrap;color:#071006;border-color:#ffe05b;background:linear-gradient(135deg,#ffe775,#dcae1c);box-shadow:0 0 16px rgba(255,217,74,.24);cursor:pointer}
.reward-action.claim:hover{filter:brightness(1.08);transform:translateY(-1px)}
.reward-action:disabled{cursor:default}
.next-level-button{width:100%;min-height:74px;border:1px solid rgba(57,255,122,.72);border-radius:14px;background:linear-gradient(135deg,rgba(0,72,45,.95),rgba(0,27,22,.98));color:var(--g);font-family:Orbitron,sans-serif;font-size:14px;font-weight:900;letter-spacing:.08em;cursor:pointer;box-shadow:0 0 24px rgba(57,255,122,.16);transition:.2s}
.next-level-button:hover:not(:disabled){transform:translateY(-2px);border-color:#b8ffd0;box-shadow:0 0 30px rgba(57,255,122,.3);color:#fff}
.next-level-button:disabled{opacity:.48;cursor:not-allowed;filter:grayscale(.25)}
.next-level-button[hidden]{display:none!important}
.nr-video-finish{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 18px;background:linear-gradient(90deg,rgba(0,47,33,.96),rgba(3,15,14,.98));border-top:1px solid rgba(57,255,122,.28)}
.nr-video-finish[hidden]{display:none}
.nr-video-finish span{color:#dce7e3;font-size:14px}
.nr-video-finish button{border:1px solid var(--g);border-radius:9px;background:rgba(0,71,43,.68);color:var(--g);font-family:Orbitron,sans-serif;font-size:11px;font-weight:900;padding:11px 15px;cursor:pointer;white-space:nowrap}
.nr-video-finish button:hover:not(:disabled){background:rgba(57,255,122,.18);box-shadow:0 0 15px rgba(57,255,122,.18)}
.nr-video-finish button:disabled{opacity:.45;cursor:wait}

@media(max-width:900px){
  .reward-column{gap:12px}
  .next-level-button{min-height:62px;font-size:12px}
  .nr-video-finish{flex-direction:column;text-align:center;align-items:stretch}
  .nr-video-finish button{width:100%}
  .lesson.interactive:hover{transform:none}
}


/* START · navegación fija de regreso al Centro Educativo · margen superior izquierdo */
.start-back-nav{
  position:fixed;
  top:max(18px,env(safe-area-inset-top));
  left:max(18px,env(safe-area-inset-left));
  z-index:9000;
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:48px;
  padding:6px 15px 6px 7px;
  border:1px solid rgba(57,255,122,.72);
  border-radius:999px;
  background:linear-gradient(135deg,rgba(0,48,36,.94),rgba(0,11,10,.96));
  color:#f4fff8;
  text-decoration:none;
  font-family:Orbitron,sans-serif;
  font-size:10px;
  font-weight:900;
  letter-spacing:.08em;
  box-shadow:0 8px 28px rgba(0,0,0,.42),0 0 20px rgba(57,255,122,.14),inset 0 0 18px rgba(57,255,122,.04);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  transition:transform .2s,border-color .2s,box-shadow .2s,background .2s,color .2s;
}
.start-back-nav__icon{
  width:34px;
  height:34px;
  flex:0 0 34px;
  display:grid;
  place-items:center;
  border-radius:50%;
  border:1px solid rgba(57,255,122,.55);
  background:radial-gradient(circle at 35% 30%,rgba(134,255,174,.32),rgba(0,87,52,.72) 58%,rgba(0,24,19,.94));
  box-shadow:0 0 16px rgba(57,255,122,.22);
}
.start-back-nav__icon svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.start-back-nav:hover{
  transform:translateY(-2px);
  border-color:#baffcf;
  background:linear-gradient(135deg,rgba(0,73,45,.97),rgba(0,18,15,.98));
  color:#fff;
  box-shadow:0 10px 34px rgba(0,0,0,.48),0 0 30px rgba(57,255,122,.3),inset 0 0 20px rgba(57,255,122,.08);
}
.start-back-nav:focus-visible{outline:2px solid #fff;outline-offset:3px}
.start-back-nav:active{transform:translateY(0) scale(.98)}
@media(max-width:640px){
  .start-back-nav{
    top:max(12px,env(safe-area-inset-top));
    left:max(12px,env(safe-area-inset-left));
    width:46px;
    height:46px;
    min-height:46px;
    padding:5px;
    justify-content:center;
  }
  .start-back-nav__icon{width:34px;height:34px;flex-basis:34px}
  .start-back-nav__label{display:none}
}