:root{--bg:#0E1217;--panel:#171D25;--panel2:#1D2430;--line:#2A333F;--ink:#F3F5F7;--muted:#93A0AE;--accent:#C6F135;--teal:#2DD4BF}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
 background-image:linear-gradient(var(--panel) 1px,transparent 1px),linear-gradient(90deg,var(--panel) 1px,transparent 1px);background-size:80px 80px;background-attachment:fixed}
a{color:var(--accent)}
img{max-width:100%;display:block}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
.estrecho{max-width:820px}

/* Barra superior */
.barra{position:sticky;top:0;z-index:5;background:rgba(14,18,23,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.barra .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;height:64px}
.marca{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:800;letter-spacing:-.3px;font-size:18px}
.marca img{width:36px;height:36px;border-radius:9px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#0E1217;font-weight:700;padding:10px 16px;border-radius:9px;text-decoration:none;border:0;font-size:15px;cursor:pointer;font-family:inherit;white-space:nowrap}
.btn:hover{filter:brightness(1.07)}
.btn.sec{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.yt::before{content:"";width:0;height:0;border-left:9px solid currentColor;border-top:6px solid transparent;border-bottom:6px solid transparent}

/* Portada */
.hero{padding:28px 0 8px}
.hero .banner{border-radius:16px;border:1px solid var(--line);overflow:hidden;background:#0E1217}
.hero .banner img{width:100%;height:auto}
.kicker{font:700 13px/1 Inter,system-ui,sans-serif;letter-spacing:2px;text-transform:uppercase;color:var(--teal);margin:36px 0 10px}
h1{font-size:clamp(32px,6vw,52px);line-height:1.05;letter-spacing:-1.5px;margin:0 0 14px}
.sub{color:var(--muted);font-size:clamp(17px,2.4vw,20px);margin:0 0 22px;max-width:720px}
.botones{display:flex;flex-wrap:wrap;gap:10px;margin:8px 0}

/* Series del canal */
.series{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:18px 0 8px}
.serie{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px;border-top:4px solid var(--accent)}
.serie:nth-child(2){border-top-color:var(--teal)}
.serie:nth-child(4){border-top-color:#FF6B57}
.serie b{display:block;font-size:17px;margin-bottom:4px}
.serie span{color:var(--muted);font-size:15px;line-height:1.5}

h2{font-size:clamp(24px,3.4vw,30px);letter-spacing:-.6px;margin:52px 0 6px}
.seccion-sub{color:var(--muted);margin:0 0 18px}

/* Recursos */
.recursos{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.recurso{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px;transition:border-color .15s,transform .15s}
.recurso:hover{border-color:var(--accent);transform:translateY(-2px)}
.etiqueta{align-self:flex-start;font:600 12px/1 "JetBrains Mono",ui-monospace,Menlo,monospace;color:#0E1217;background:var(--teal);padding:6px 8px;border-radius:6px;margin-bottom:14px}
.recurso h3{margin:0 0 8px;font-size:21px;line-height:1.25;letter-spacing:-.3px}
.recurso p{margin:0 0 18px;color:var(--muted);font-size:15.5px;flex:1}
.recurso .botones{margin:0}
.pronto{border-style:dashed;opacity:.7}
.pronto:hover{transform:none;border-color:var(--line)}

/* Suscribirse */
.suscribir{margin:56px 0 0;background:linear-gradient(135deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:18px;padding:28px;display:flex;flex-wrap:wrap;align-items:center;gap:20px;justify-content:space-between}
.suscribir .txt{flex:1 1 340px}
.suscribir h2{margin:0 0 6px;font-size:clamp(22px,3vw,28px)}
.suscribir p{margin:0;color:var(--muted)}

footer{margin:48px 0 0;padding:22px 0 40px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:10px 18px;justify-content:space-between}
footer a{color:var(--muted)}

/* Página de un recurso */
.doc h1{margin-top:34px}
.doc h2{font-size:22px;margin:40px 0 12px;letter-spacing:-.3px}
.doc h2 .n{font-family:"JetBrains Mono",ui-monospace,monospace;color:var(--accent);margin-right:10px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin:14px 0}
.card h3{margin:0 0 6px;font-size:19px}
.card p{margin:0}
ul.check{list-style:none;padding:0;margin:0}
ul.check li{position:relative;padding-left:32px;margin:12px 0}
ul.check li::before{content:"";position:absolute;left:0;top:4px;width:18px;height:18px;border:2px solid var(--accent);border-radius:4px}
pre{white-space:pre-wrap;background:#0A0D11;border:1px solid var(--line);border-radius:10px;padding:16px;font:14px/1.55 "JetBrains Mono",ui-monospace,Menlo,monospace;color:var(--ink);margin:10px 0}
.fuentes{font-size:14px;color:var(--muted);padding-left:18px}
.fuentes li{margin:6px 0}
.nota{font-size:14px;color:var(--muted)}
.miga{display:inline-block;margin-top:26px;font-size:14px;color:var(--muted);text-decoration:none}
.miga:hover{color:var(--ink)}

@media (max-width:560px){
 .barra .btn{padding:8px 12px;font-size:14px}
 .marca span{display:none}
 .suscribir{padding:22px}
}
@media print{
 :root{--bg:#fff;--panel:#fff;--panel2:#fff;--line:#bbb;--ink:#111;--muted:#444;--accent:#3d5a00;--teal:#0f766e}
 body{background:#fff;font-size:11.5pt}
 .barra,.botones,.noprint,.suscribir,.miga{display:none!important}
 .wrap{max-width:none;padding:0}
 pre{background:#f5f5f5;color:#111}
 ul.check li::before{border-color:#111}
 a{color:#111;text-decoration:none}
 .card{break-inside:avoid}
 .solo-print{display:block!important}
}
.solo-print{display:none}

/* ===== A. Logo animado ===== */
.logo-anim{display:block;overflow:visible}
.logo-anim .b{transform-box:fill-box;transform-origin:50% 100%;transform:scaleY(0);animation:crece .7s cubic-bezier(.2,.8,.2,1) forwards}
.logo-anim .b2{animation-delay:.15s}.logo-anim .b3{animation-delay:.3s}
.logo-anim .l{stroke-dasharray:400;stroke-dashoffset:400;animation:traza .8s .6s ease-out forwards}
.logo-anim .p{transform-box:fill-box;transform-origin:center;transform:scale(0);animation:punto .4s 1.3s cubic-bezier(.3,1.6,.5,1) forwards}
.marca:hover .logo-anim .b,.logo-grande:hover .b{animation:crece .7s cubic-bezier(.2,.8,.2,1) forwards,late 1.6s 1s ease-in-out infinite}
@keyframes crece{to{transform:scaleY(1)}}
@keyframes traza{to{stroke-dashoffset:0}}
@keyframes punto{to{transform:scale(1)}}
@keyframes late{0%,100%{transform:scaleY(1)}50%{transform:scaleY(.92)}}
.marca .logo-anim{width:36px;height:36px;background:#0E1217;border-radius:9px;padding:5px}
.intro-fila{display:flex;align-items:center;gap:22px;margin:36px 0 0}
.logo-grande{flex:0 0 auto;width:92px;height:92px;background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:14px}
.logo-grande .logo-anim{width:100%;height:100%}
.intro-fila .kicker{margin:0 0 8px}
.intro-fila h1{margin:0}
@media (max-width:560px){.logo-grande{width:64px;height:64px;border-radius:16px;padding:10px}.intro-fila{gap:14px;align-items:flex-start}}

/* ===== B. Gráficos animados de fondo ===== */
.intro{position:relative;isolation:isolate}
.fondo-datos{position:absolute;right:-60px;top:-6px;width:min(500px,52%);height:auto;z-index:-1;opacity:.22;pointer-events:none}
.fondo-datos .linea{fill:none;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:900;stroke-dashoffset:900;animation:traza 3.2s ease-out forwards}
.fondo-datos .linea.t{stroke:var(--teal);animation-delay:.4s}
.fondo-datos .linea.a{stroke:var(--accent);animation-delay:1s}
.fondo-datos .linea.g{stroke:var(--muted);stroke-dasharray:6 10;animation:none;opacity:.6}
.fondo-datos .barra-f{fill:var(--line);transform-box:fill-box;transform-origin:50% 100%;transform:scaleY(0);animation:crece 1.2s cubic-bezier(.2,.8,.2,1) forwards}
.fondo-datos .pt{fill:var(--accent);animation:brilla 2.4s ease-in-out infinite}
.fondo-datos .pt:nth-of-type(2){animation-delay:.8s}.fondo-datos .pt:nth-of-type(3){animation-delay:1.6s}
@keyframes brilla{0%,100%{opacity:.25;r:5}50%{opacity:1;r:8}}
.contador{font-family:"JetBrains Mono",ui-monospace,monospace;color:var(--accent);font-weight:600}
@media (max-width:700px){.fondo-datos{opacity:.16;width:90%;right:-20%;top:60px}}

/* ===== C. Vista previa animada en las tarjetas ===== */
.vista{background:#0A0D11;border:1px solid var(--line);border-radius:12px;padding:14px 14px 10px;margin:0 0 16px;font-size:14px}
.vista .fila{display:flex;align-items:center;gap:10px;margin:0 0 8px;color:var(--muted)}
.vista .caja{flex:0 0 16px;height:16px;border:2px solid var(--line);border-radius:4px;position:relative;transition:border-color .2s,background .2s}
.vista .caja::after{content:"";position:absolute;left:4px;top:0;width:4px;height:8px;border:solid #0E1217;border-width:0 2px 2px 0;transform:rotate(45deg) scale(0);transition:transform .2s}
.vista .tachado{position:relative}
.vista .tachado::after{content:"";position:absolute;left:0;top:52%;height:2px;width:0;background:#FF6B57;transition:width .35s}
.recurso:hover .vista .fila,.recurso.en-vista .vista .fila{color:var(--ink)}
.recurso:hover .vista .caja,.recurso.en-vista .vista .caja{border-color:var(--accent);background:var(--accent)}
.recurso:hover .vista .caja::after,.recurso.en-vista .vista .caja::after{transform:rotate(45deg) scale(1)}
.recurso:hover .vista .tachado::after,.recurso.en-vista .vista .tachado::after{width:100%}
.vista .fila:nth-child(1) *{transition-delay:.05s}.vista .fila:nth-child(2) *{transition-delay:.35s}
.vista .fila:nth-child(3) *{transition-delay:.65s}.vista .fila:nth-child(4) *{transition-delay:.95s}
.vista .corr{color:var(--accent);font-weight:600;opacity:0;transition:opacity .3s 1.3s}
.recurso:hover .vista .corr,.recurso.en-vista .vista .corr{opacity:1}

@media (prefers-reduced-motion:reduce){
 *,*::before,*::after{animation:none!important;transition:none!important}
 .logo-anim .b,.fondo-datos .barra-f{transform:none}.logo-anim .p{transform:none}
 .logo-anim .l,.fondo-datos .linea{stroke-dashoffset:0}
}
@media print{.fondo-datos,.logo-grande{display:none}}