:root{
  --bg:#ffffff; --alt:#f5f5f7; --ink:#1d1d1f; --muted:#6e6e73; --line:#d2d2d7;
  --blue:#0071e3; --blue-hover:#0077ed; --link:#0066cc;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){ --bg:#000; --alt:#161617; --ink:#f5f5f7; --muted:#a1a1a6; --line:#3a3a3c; --link:#2997ff; }
}
:root[data-theme="dark"]{ --bg:#000; --alt:#161617; --ink:#f5f5f7; --muted:#a1a1a6; --line:#3a3a3c; --link:#2997ff; }

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-font-smoothing:antialiased}
body{background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Inter","Helvetica Neue",Arial,sans-serif;font-size:18px;line-height:1.6;letter-spacing:-.005em}
a{color:var(--link)}
h1,h2,h3{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter","Helvetica Neue",Arial,sans-serif;font-weight:600;letter-spacing:-.025em;line-height:1.1}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:6px}

/* Nav */
.nav{position:sticky;top:0;z-index:30;height:48px;background:rgba(0,0,0,.78);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(255,255,255,.08);color:#f5f5f7}
.nav .in{max-width:980px;margin:0 auto;padding:0 16px;height:100%;display:flex;align-items:center;justify-content:space-between}
.nav a{color:inherit;text-decoration:none}
.nav .name{font-size:.95rem;font-weight:600}
.nav nav{display:flex;gap:22px;align-items:center;font-size:.8rem;color:#a1a1a6}
.nav nav a:hover{color:#fff}
.btn{display:inline-block;background:var(--blue);color:#fff!important;padding:12px 24px;border-radius:980px;font-size:1.0625rem;text-decoration:none;transition:background .2s}
.btn:hover{background:var(--blue-hover)}
.nav .btn{padding:5px 14px;font-size:.8rem}

/* Encabezado de blog / artículo */
.head{background:radial-gradient(90% 80% at 50% 0%,#1b2a55 0%,#000 70%);color:#f5f5f7;padding:90px 16px 80px;text-align:center}
.head .kick{color:#a1a1a6;font-weight:600;font-size:1.05rem;margin-bottom:12px}
.head h1{font-size:clamp(2.2rem,6vw,3.8rem);max-width:860px;margin:0 auto;background:linear-gradient(180deg,#fff 30%,#b9c3ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.head p.sub{color:#a1a1a6;font-size:clamp(1.1rem,2.2vw,1.35rem);max-width:640px;margin:18px auto 0;line-height:1.4}
.head .meta{color:#86868b;font-size:.9rem;margin-top:22px}

/* Lista de artículos */
.list{max-width:980px;margin:0 auto;padding:80px 16px 100px;display:grid;gap:20px}
@media(min-width:820px){.list{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--alt);border-radius:28px;padding:34px 28px;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;justify-content:space-between;min-height:300px;transition:transform .25s ease}
.card:hover{transform:translateY(-3px)}
.card small{color:var(--muted);font-weight:600;font-size:.85rem}
.card h2{font-size:1.55rem;margin:14px 0 12px}
.card p{color:var(--muted);font-size:1rem}
.card .more{color:var(--link);margin-top:24px;font-size:1rem}
.card .more::after{content:" ›"}

/* Artículo */
article{max-width:700px;margin:0 auto;padding:70px 16px 40px}
article p{margin:0 0 1.15em}
article h2{font-size:clamp(1.6rem,3.4vw,2.1rem);margin:2em 0 .6em}
article h3{font-size:1.3rem;margin:1.6em 0 .5em}
article ul,article ol{margin:0 0 1.2em 1.2em}
article li{margin-bottom:.5em}
article strong{font-weight:600}
.lead{font-size:1.25rem;color:var(--muted);line-height:1.5}
.pull{border-left:3px solid var(--blue);padding:4px 0 4px 20px;margin:1.8em 0;font-size:1.25rem;font-weight:500;line-height:1.4}
.todo{background:#fff4d6;color:#5c4400;border:1px dashed #d9a400;border-radius:14px;padding:18px 20px;margin:1.6em 0;font-size:1rem}
.todo b{display:block;margin-bottom:4px}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]) .todo{background:#2b2410;color:#f3d98a;border-color:#8a6d16} }

/* Llamado a la acción */
.cta{max-width:700px;margin:20px auto 90px;padding:44px 32px;border-radius:28px;background:radial-gradient(80% 120% at 50% 0%,#1b2a55,#000 70%);color:#f5f5f7;text-align:center}
.cta h2{font-size:clamp(1.6rem,3.4vw,2.2rem);margin-bottom:12px}
.cta p{color:#a1a1a6;margin-bottom:24px}
.cta .wa{display:block;margin-top:16px;color:#2997ff;text-decoration:none}

.related{max-width:700px;margin:0 auto 90px;padding:0 16px}
.related h3{font-size:1.2rem;margin-bottom:12px}
.related a{display:block;padding:14px 0;border-top:1px solid var(--line);text-decoration:none}
.related a:last-child{border-bottom:1px solid var(--line)}

footer{background:#000;color:#86868b;font-size:.75rem;padding:22px 16px;border-top:1px solid #1c1c1e}
footer .in{max-width:980px;margin:0 auto;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px}
footer a{color:inherit}

.byline{display:inline-flex;align-items:center;gap:12px;margin-top:24px;color:#a1a1a6;font-size:.95rem;text-decoration:none}
.byline img{width:44px;height:44px;border-radius:50%;object-fit:cover;object-position:50% 20%}
.byline b{color:#f5f5f7;font-weight:600;display:block;text-align:left}
.byline span{display:block;text-align:left}
.author{max-width:700px;margin:10px auto 40px;padding:0 16px}
.author .box{display:flex;gap:20px;align-items:center;background:var(--alt);border-radius:24px;padding:24px}
.author img{width:84px;height:84px;border-radius:50%;object-fit:cover;object-position:50% 20%;flex:none}
.author b{display:block;font-weight:600;font-size:1.05rem;margin-bottom:4px}
.author p{color:var(--muted);font-size:.98rem;margin:0}
.author a{text-decoration:none}

/* Barra superior */
.nav{height:60px;background:rgba(0,0,0,.92);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(255,255,255,.07);color:#f5f5f7}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:#f5f5f7}
.brand .mono{width:34px;height:34px;border-radius:9px;background:#f5f5f7;color:#000;display:grid;place-items:center;font-weight:700;font-size:.82rem;letter-spacing:-.02em;flex:none}
.brand .bt{display:flex;flex-direction:column;line-height:1.15}
.brand b{font-weight:600;font-size:.95rem;letter-spacing:-.01em}
.brand small{font-size:.72rem;color:#a1a1a6;font-weight:500}
.nav nav{gap:28px}
.nav nav a{font-size:.82rem}
.nav .btn{padding:7px 16px;font-size:.82rem}