:root{--bg:#f6f8fb;--surface:#fff;--fg:#0e1726;--mut:#5a6577;--line:#e3e8ef;--acc:#1d6bff;--acc2:#ffb020;--yt:#ff0033;--fb:#1877f2;
  --r:16px;--sh:0 1px 2px rgb(15 23 42/.05),0 8px 24px rgb(15 23 42/.06);--font:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;--head:"Space Grotesk",var(--font);color-scheme:light}
[data-theme=dark]{--bg:#0a0f1a;--surface:#111827;--fg:#e7ecf3;--mut:#94a0b5;--line:#1f2a3c;--acc:#5b9bff;--sh:0 1px 2px rgb(0 0 0/.4),0 8px 24px rgb(0 0 0/.25);color-scheme:dark}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--acc);text-decoration:none}
h1,h2,h3{font-family:var(--head);line-height:1.15;letter-spacing:-.02em;margin:0 0 .5em}
.wrap{width:min(1200px,100% - 32px);margin-inline:auto}
.narrow{max-width:820px}
.section{padding-block:64px}
.alt{background:var(--surface);border-block:1px solid var(--line)}
.i{width:1.15em;height:1.15em;fill:currentColor;flex:none}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;z-index:99;background:var(--acc);color:#fff;padding:8px 12px;border-radius:8px}

/* cabecera */
.top{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:16px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font:700 1.15rem var(--head);color:var(--fg);letter-spacing:-.02em}
.menu{display:flex;gap:4px;margin-left:auto}
.menu a{padding:8px 14px;border-radius:10px;color:var(--mut);font-weight:500;transition:.15s}
.menu a:hover,.menu a[aria-current]{color:var(--fg);background:var(--surface)}
.tools{display:flex;gap:8px;align-items:center}
.ibtn{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--fg);cursor:pointer;transition:.15s}
.ibtn:hover{border-color:var(--acc);color:var(--acc)}
.ibtn.ok{background:var(--acc);color:#fff}
.burger{display:none}
@media (max-width:880px){
  .burger{display:inline-grid}.tools{margin-left:auto}.top .btn-yt{display:none}
  .menu{position:fixed;inset:68px 0 auto;flex-direction:column;padding:12px 16px 20px;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:var(--sh);display:none}
  .menu.open{display:flex}.menu a{padding:12px 14px}
}

/* botones y chips */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:12px;font-weight:600;border:0;cursor:pointer;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px)}
.btn.sm{padding:8px 14px;font-size:.9rem}
.btn-yt{background:var(--yt);color:#fff;box-shadow:0 10px 24px -10px var(--yt)}
.btn-fb{background:var(--fb);color:#fff;box-shadow:0 10px 24px -10px var(--fb)}
.btn-ghost{background:rgb(255 255 255/.08);color:#fff;border:1px solid rgb(255 255 255/.2)}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:6px 14px;border-radius:99px;border:1px solid var(--line);background:var(--surface);color:var(--fg);font:500 .9rem var(--font);cursor:pointer;transition:.15s}
.chip:hover,.chip.on{background:var(--acc);border-color:var(--acc);color:#fff}

/* hero */
.hero{position:relative;overflow:hidden;color:#e7ecf3;background:radial-gradient(60% 80% at 85% 10%,rgb(29 107 255/.38),transparent 60%),radial-gradient(50% 60% at 0 100%,rgb(255 176 32/.16),transparent 60%),#070b14}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgb(255 255 255/.05) 1px,transparent 1px),linear-gradient(90deg,rgb(255 255 255/.05) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(70% 70% at 50% 40%,#000,transparent)}
.hero-in{position:relative;display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center;padding-block:88px}
.eyebrow{display:inline-flex;gap:8px;align-items:center;padding:6px 14px;border-radius:99px;background:rgb(255 255 255/.07);border:1px solid rgb(255 255 255/.12);font-size:.85rem;color:#c9d4e5}
.eyebrow .i{color:var(--yt)}
.hero h1{font-size:clamp(2.3rem,5.5vw,3.9rem);margin:22px 0 18px}
.grad{background:linear-gradient(90deg,#5b9bff,#38e1ff 50%,#ffb020);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.15rem;color:var(--mut);max-width:62ch;margin:0}
.hero .lead{color:#b6c2d6}
.hero .chip{background:rgb(255 255 255/.06);border-color:rgb(255 255 255/.14);color:#dbe4f2}
.hero-media{border-radius:20px;overflow:hidden;border:1px solid rgb(255 255 255/.12);box-shadow:0 40px 80px -24px rgb(29 107 255/.55)}
@media (max-width:880px){.hero-in{grid-template-columns:1fr;gap:36px;padding-block:56px}}
@media (prefers-reduced-motion:no-preference){.hero-in>*{animation:up .7s both}.hero-in>:last-child{animation-delay:.15s}@keyframes up{from{opacity:0;transform:translateY(18px)}}}

/* secciones y tarjetas */
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.2rem);margin:0}
.sec-head p{margin:4px 0 0;color:var(--mut)}
.link{font-weight:600}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(300px,100%),1fr));gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);transition:transform .2s,box-shadow .2s}
.grid .card:hover{transform:translateY(-4px);box-shadow:0 22px 44px -16px rgb(15 23 42/.28)}
.card-b{padding:16px 18px 20px}
.card h3{font-size:1.05rem;margin:0 0 8px}
.card h3 a{color:var(--fg)}.card h3 a:hover{color:var(--acc)}
.card p{color:var(--mut);margin:0 0 12px;font-size:.95rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.meta,time{color:var(--mut);font-size:.875rem}
.cover{display:block;aspect-ratio:16/9;overflow:hidden;background:#0b1220}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.pcard:hover .cover img{transform:scale(1.05)}
.ph{height:100%;background:linear-gradient(135deg,#1d6bff,#0b1220 60%,#ffb020)}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.tag{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--acc);background:color-mix(in srgb,var(--acc) 12%,transparent);padding:3px 8px;border-radius:6px}
.empty{grid-column:1/-1;color:var(--mut);padding:32px;text-align:center;border:1px dashed var(--line);border-radius:var(--r);margin:0}

/* YouTube lite */
.yt{all:unset;cursor:pointer;display:block;position:relative;aspect-ratio:16/9;width:100%;background:#000;overflow:hidden}
.yt img,.yt iframe{width:100%;height:100%;object-fit:cover;border:0}
.yt:not(.on)::after{content:"";position:absolute;inset:0;margin:auto;width:68px;height:48px;border-radius:14px;transition:transform .2s;background:var(--yt) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M8 5v14l11-7z'/%3E%3C/svg%3E") center/26px no-repeat}
.yt:hover::after{transform:scale(1.12)}
.yt:focus-visible{outline:3px solid var(--acc);outline-offset:-3px}

/* comunidad */
.band{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:clamp(24px,5vw,56px);border-radius:24px;color:#e7ecf3;background:radial-gradient(80% 100% at 100% 0,rgb(29 107 255/.35),transparent 60%),linear-gradient(135deg,#0b1220,#13254a)}
.band h2{font-size:clamp(1.7rem,3.5vw,2.4rem)}
.band p{color:#b6c2d6}
.fb{min-height:220px;display:grid;place-items:center;border-radius:16px;overflow:hidden;background:rgb(255 255 255/.05)}
.fb a{color:#dbe4f2}
.fb iframe{width:100%;max-width:500px;height:520px;border:0;background:#fff}
@media (max-width:880px){.band{grid-template-columns:1fr}}

/* páginas internas */
.page-head{padding:48px 0 36px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,color-mix(in srgb,var(--acc) 7%,transparent),transparent)}
.page-head h1{font-size:clamp(2rem,4.5vw,3rem);max-width:26ch}
.page-head .meta{margin:16px 0 0}
.crumbs{font-size:.85rem;color:var(--mut);margin-bottom:18px}
.crumbs a{color:var(--mut)}.crumbs a:hover{color:var(--acc)}
.filters{display:grid;gap:16px;margin-top:28px}
.filters input{width:100%;max-width:560px;padding:14px 18px;border-radius:14px;border:1px solid var(--line);background:var(--surface);color:var(--fg);font:inherit;box-shadow:var(--sh)}
.filters input:focus{outline:2px solid var(--acc);outline-offset:1px}

/* artículo */
.post-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding-block:44px}
.side{display:grid;gap:20px;align-content:start;align-self:start;position:sticky;top:92px}
@media (max-width:980px){.post-grid{grid-template-columns:1fr}.side{position:static}}
.toc{padding:20px 22px}
.toc ol{list-style:none;padding:0;margin:10px 0 0}
.toc ol ol{padding-left:14px}
.toc a{display:block;padding:5px 0;color:var(--mut);font-size:.92rem;line-height:1.4}
.toc a:hover,.toc a.on{color:var(--acc)}
.sub{padding:24px;text-align:center}
.sub p{color:var(--mut);font-size:.95rem}
.media{width:100%;border-radius:var(--r);overflow:hidden;margin-bottom:36px;box-shadow:var(--sh)}
.prose{font-size:1.075rem;min-width:0}
.prose>:first-child{margin-top:0}
.prose h2{font-size:1.75rem;margin:2em 0 .6em}
.prose h3{font-size:1.3rem;margin:1.6em 0 .5em}
.prose p,.prose ul,.prose ol{margin:0 0 1.2em}
.prose li{margin-bottom:.4em}
.prose img{border-radius:12px;margin:1.6em 0}
.prose a{text-decoration:underline;text-underline-offset:3px}
.prose blockquote{margin:1.6em 0;padding:14px 20px;border-left:4px solid var(--acc2);background:var(--surface);border-radius:0 12px 12px 0}
.prose code{font:.88em ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--surface);border:1px solid var(--line);padding:2px 6px;border-radius:6px}
.prose pre{background:#0b1220;color:#e7ecf3;padding:18px 20px;border-radius:12px;overflow:auto}
.prose pre code{background:none;border:0;padding:0;color:inherit}
.prose table{display:block;overflow-x:auto;border-collapse:collapse;margin:1.6em 0}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.prose th{background:var(--surface)}
.share{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line);color:var(--mut);font-weight:600}
.progress{position:fixed;inset:0 0 auto;height:3px;z-index:60;transform-origin:0 50%;transform:scaleX(var(--p,0));background:linear-gradient(90deg,var(--acc),var(--acc2))}
.ad{margin:36px 0;min-height:100px}

/* pie */
.foot{margin-top:72px;border-top:1px solid var(--line);background:var(--surface)}
.foot-in{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:32px;padding-block:52px}
.foot p{color:var(--mut);max-width:40ch}
.foot h4{font:600 .8rem var(--font);text-transform:uppercase;letter-spacing:.08em;color:var(--mut);margin:6px 0 14px}
.foot ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.foot li a{color:var(--fg)}.foot li a:hover{color:var(--acc)}
.social{display:flex;gap:8px}
.copy{border-top:1px solid var(--line);padding-block:20px;color:var(--mut);font-size:.85rem}
@media (max-width:760px){.foot-in{grid-template-columns:1fr 1fr}.foot-in>:first-child{grid-column:1/-1}}