/* GreatlySEO — estilos del blog (paleta Cobalto y Señal) */
:root{
  --bg:#ffffff; --bg-alt:#f6f6fa; --surface:#ffffff; --ink:#14123b; --ink-soft:#56547a; --ink-faint:#8583a6;
  --primary:#3b3bf5; --primary-ink:#ffffff; --primary-soft:#e8e7ff; --accent:#ff7a3d; --accent-ink:#14123b;
  --border:#e3e2f0; --logo-ring:#3b3bf5; --code-bg:#f0effa;
  --shadow:0 18px 40px -22px rgba(20,18,59,.35);
  --sans:"Plus Jakarta Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --display:"Bricolage Grotesque","Plus Jakarta Sans","Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"Cascadia Mono",Consolas,monospace;
  --r:16px; --hdr:68px;
}
@media (prefers-color-scheme: dark){
  :root{
    color-scheme:dark;
    --bg:#0e0d2a; --bg-alt:#15143a; --surface:#1a1946; --ink:#ededfa; --ink-soft:#a9a8cc; --ink-faint:#7f7da8;
    --primary:#a9a8ff; --primary-ink:#0e0d2a; --primary-soft:#26245e; --accent:#ff8f5a; --accent-ink:#14123b;
    --border:#2a2860; --logo-ring:#ffffff; --code-bg:#22204f;
    --shadow:0 18px 40px -22px rgba(0,0,0,.7);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hdr) + 20px)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit}
img{max-width:100%;height:auto;display:block}
:focus-visible{outline:2.5px solid var(--primary);outline-offset:3px;border-radius:6px}
h1,h2,h3,h4{font-family:var(--display);letter-spacing:-.03em;line-height:1.1;text-wrap:balance;margin:0}
p{margin:0}
.wrap{max-width:1160px;margin:0 auto;padding-inline:24px}
.narrow{max-width:820px}
@media (max-width:520px){.wrap{padding-inline:16px}body{font-size:16.5px}}
.eyebrow{font-family:var(--mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--primary);font-weight:500}
.btn{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;border:0;cursor:pointer;font:inherit;font-weight:700;text-decoration:none;border-radius:999px;padding:11px 20px;font-size:.92rem;transition:transform .15s ease,background .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:scale(.96)}
.btn-dark{background:var(--ink);color:var(--bg)}
.btn-dark:hover{background:var(--primary);color:var(--primary-ink)}
.btn-accent{background:var(--accent);color:var(--accent-ink)}

/* barra de progreso */
.progress{position:fixed;top:0;left:0;right:0;height:3px;transform-origin:0 50%;transform:scaleX(var(--p,0));background:linear-gradient(90deg,var(--primary),var(--accent));z-index:90;pointer-events:none}

/* cabecera */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:40;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
.logo svg{height:32px;width:auto;display:block}
.nav{display:flex;gap:6px}
.nav a{text-decoration:none;font-weight:600;font-size:.9rem;color:var(--ink-soft);padding:7px 12px;border-radius:999px}
.nav a:hover{background:var(--bg-alt);color:var(--ink)}
.nav a.on{background:var(--ink);color:var(--bg)}
@media (max-width:760px){.nav{display:none}.top .btn{padding:9px 14px;font-size:.84rem}.logo svg{height:28px}}

/* portada del blog */
.blog-hero{padding-block:64px 36px;background:radial-gradient(900px 420px at 95% -20%,var(--primary-soft),transparent 60%)}
.blog-hero h1{font-size:clamp(2.2rem,5vw,3.8rem);font-weight:800;margin-top:12px;max-width:16ch}
.blog-hero h1 em{font-style:normal;color:var(--primary);background:linear-gradient(transparent 68%,color-mix(in srgb,var(--accent) 40%,transparent) 68%)}
.blog-hero .lead{font-size:1.12rem;color:var(--ink-soft);margin-top:18px;max-width:40em}
.chips{display:flex;gap:8px;margin-top:28px;overflow-x:auto;scrollbar-width:none;padding-bottom:4px}
.chip{font:inherit;font-size:.86rem;font-weight:600;white-space:nowrap;cursor:pointer;padding:8px 14px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--ink-soft);transition:background .2s ease,color .2s ease}
.chip.on{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.list{padding-block:12px 88px}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.empty{color:var(--ink-soft)}

/* tarjetas */
.card{display:flex;flex-direction:column;text-decoration:none;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow)}
.card:active{transform:scale(.98)}
.card[hidden]{display:none}
.cover{aspect-ratio:16/9;max-width:100%;position:relative;overflow:hidden;display:flex;align-items:flex-end;padding:16px;
  background:radial-gradient(circle at 85% 20%,#ff7a3d 0 7%,transparent 7.5%),radial-gradient(120% 90% at 0% 100%,#3b3bf5,#14123b 70%)}
.cover::before{content:"";position:absolute;right:-8%;top:-30%;width:70%;aspect-ratio:1;border-radius:50%;border:22px solid rgba(255,255,255,.12)}
.cover::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:28px 28px}
.cover span{position:relative;z-index:1;font-family:var(--display);font-weight:800;font-size:1.5rem;color:#fff;letter-spacing:-.02em}
.cover[data-cat="geo"],.cover[data-cat="ia"]{background:radial-gradient(circle at 80% 25%,#ff7a3d 0 9%,transparent 9.5%),radial-gradient(120% 100% at 100% 100%,#6b3bf5,#14123b 70%)}
.cover[data-cat="diseno-web"]{background:radial-gradient(circle at 85% 20%,#ffffff 0 5%,transparent 5.5%),linear-gradient(135deg,#3b3bf5,#14123b)}
.cover[data-cat="seo-local"]{background:radial-gradient(circle at 80% 30%,#14123b 0 8%,transparent 8.5%),linear-gradient(160deg,#ff7a3d,#ff9d6b 45%,#3b3bf5)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:.8rem;color:var(--ink-faint)}
.tag{font-family:var(--mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.07em;background:var(--primary-soft);color:var(--primary);padding:3px 8px;border-radius:5px;font-weight:500;justify-self:start;align-self:flex-start}
.card h2{font-size:1.25rem;font-weight:800}
.card p{color:var(--ink-soft);font-size:.95rem}
.more{margin-top:auto;padding-top:6px;font-weight:700;font-size:.9rem;color:var(--primary)}
.more b{display:inline-block;transition:transform .2s ease}
.card:hover .more b{transform:translateX(4px)}
.card-big{grid-column:1/-1;display:grid;grid-template-columns:1.15fr 1fr}
.card-big .cover{aspect-ratio:auto;min-height:320px}
.card-big .cover span{font-size:2.4rem}
.card-big .card-body{padding:36px;justify-content:center}
.card-big h2{font-size:clamp(1.6rem,2.8vw,2.3rem)}
.card-big p{font-size:1.05rem}
@media (max-width:900px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.card-big{grid-template-columns:1fr}.card-big .cover{min-height:0;aspect-ratio:16/9}.card-big .card-body{padding:24px}}
@media (max-width:600px){.grid{grid-template-columns:1fr}}

/* artículo */
.post-head{padding-block:48px 36px;background:radial-gradient(800px 380px at 100% -10%,var(--primary-soft),transparent 60%);border-bottom:1px solid var(--border)}
.post-head .wrap{display:grid;gap:16px}
.crumbs{font-size:.85rem;color:var(--ink-faint)}
.crumbs a{text-decoration:none}
.crumbs a:hover{color:var(--primary)}
.post-head h1{font-size:clamp(2rem,4.6vw,3.3rem);font-weight:800}
.post-head .lead{font-size:1.15rem;color:var(--ink-soft);max-width:40em}
.byline{display:flex;align-items:center;gap:12px;margin-top:8px;flex-wrap:wrap}
.byline>div{display:grid;line-height:1.35;font-size:.9rem}
.byline span{color:var(--ink-soft)}
.avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--ink);color:var(--bg);font-family:var(--display);font-weight:800;position:relative}
.avatar::after{content:"";position:absolute;top:1px;right:1px;width:10px;height:10px;background:var(--accent);clip-path:polygon(50% 0,62% 38%,100% 50%,62% 62%,50% 100%,38% 62%,0 50%,38% 38%)}
.share{margin-left:auto;font:inherit;font-size:.85rem;font-weight:600;cursor:pointer;background:var(--surface);border:1px solid var(--border);color:var(--ink);border-radius:999px;padding:8px 14px}
.post-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;padding-block:48px 80px;max-width:1080px}
.toc{position:sticky;top:calc(var(--hdr) + 28px);align-self:start}
.toc summary{font-family:var(--mono);font-size:.76rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-faint);cursor:pointer;list-style:none;margin-bottom:12px}
.toc summary::-webkit-details-marker{display:none}
.toc ol{list-style:none;margin:0;padding:0;display:grid;gap:2px;border-left:2px solid var(--border)}
.toc a{display:block;text-decoration:none;font-size:.9rem;color:var(--ink-soft);padding:6px 0 6px 14px;margin-left:-2px;border-left:2px solid transparent;line-height:1.35;transition:color .2s ease,border-color .2s ease}
.toc a:hover{color:var(--ink)}
.toc a.on{color:var(--primary);border-left-color:var(--primary);font-weight:600}
@media (max-width:900px){
  .post-grid{grid-template-columns:1fr;gap:24px;padding-top:28px}
  .toc{position:static;background:var(--bg-alt);border:1px solid var(--border);border-radius:14px;padding:14px 18px}
  .toc summary{margin:0}
  .toc details[open] summary{margin-bottom:10px}
}

/* texto del artículo */
.prose{max-width:68ch;display:flex;flex-direction:column;gap:1.15em}
.prose h2{font-size:clamp(1.5rem,2.6vw,1.95rem);font-weight:800;margin-top:1.3em}
.prose h3{font-size:1.28rem;font-weight:700;margin-top:.8em}
.prose p,.prose li{color:color-mix(in srgb,var(--ink) 88%,var(--bg))}
.prose a{color:var(--primary);text-decoration-thickness:1.5px;text-underline-offset:3px}
.prose strong{color:var(--ink)}
.prose ul,.prose ol{margin:0;padding-left:1.3em;display:grid;gap:.45em}
.prose li::marker{color:var(--primary);font-weight:700}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--code-bg);padding:.12em .4em;border-radius:5px}
.prose blockquote{margin:0;padding:6px 0 6px 22px;border-left:4px solid var(--accent);font-family:var(--display);font-size:1.3rem;font-weight:700;letter-spacing:-.015em;line-height:1.35}
.prose hr{border:0;border-top:1px solid var(--border);margin-block:1em}
.prose figure{margin:0}
.prose figure img{border-radius:14px;border:1px solid var(--border)}
.prose figcaption{font-size:.85rem;color:var(--ink-faint);margin-top:8px}
.callout,.tldr{border-radius:14px;padding:18px 22px;display:grid;gap:8px;background:var(--bg-alt);border:1px solid var(--border)}
.callout p,.tldr li{font-size:.97rem}
.callout-lab{font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:500;color:var(--primary)}
.callout-importante{background:color-mix(in srgb,var(--accent) 12%,var(--bg));border-color:color-mix(in srgb,var(--accent) 40%,var(--bg))}
.callout-importante .callout-lab{color:color-mix(in srgb,var(--accent) 75%,var(--ink))}
.tldr{background:var(--primary-soft);border-color:transparent}
.tldr ul{margin:0}
.post-cta{margin-top:1.5em;border-radius:20px;padding:28px;background:var(--ink);color:var(--bg);display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.post-cta b{font-family:var(--display);font-size:1.3rem;letter-spacing:-.02em;display:block}
.post-cta p{color:color-mix(in srgb,var(--bg) 72%,var(--ink));margin-top:4px;font-size:.95rem}
.related{padding-block:64px 88px;background:var(--bg-alt);border-top:1px solid var(--border)}
.related h2{font-size:1.8rem;font-weight:800;margin-bottom:28px}

/* pie */
.foot{padding-block:32px;border-top:1px solid var(--border);color:var(--ink-faint);font-size:.85rem}
.foot .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.foot a{text-decoration:none}
.foot a:hover{color:var(--primary)}

/* movimiento */
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0s)}
.js .rv.in{opacity:1;transform:none}
.blog-hero .eyebrow,.blog-hero h1,.blog-hero .lead,.blog-hero .chips,.post-head .wrap>*{animation:rise .8s cubic-bezier(.2,.7,.2,1) both}
.blog-hero h1,.post-head h1{animation-delay:.08s}.blog-hero .lead,.post-head .lead{animation-delay:.16s}.blog-hero .chips,.post-head .byline{animation-delay:.24s}
@keyframes rise{from{opacity:0;transform:translateY(20px)}}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}.js .rv{opacity:1;transform:none}}

/* ======================================================================
   Móvil: blog tipo app
   ====================================================================== */
.post-cover,.readbar,.sheet,.sheet-bg{display:none}

@media (max-width:760px){
  .top .wrap{height:auto;flex-wrap:wrap;padding-block:10px 8px;row-gap:8px}
  .nav{display:flex;order:3;width:calc(100% + 32px);margin-inline:-16px;padding-inline:16px;overflow-x:auto;scrollbar-width:none}
  .nav a{background:var(--bg-alt);border:1px solid var(--border);white-space:nowrap}
  .nav a.on{border-color:var(--ink)}
}

@media (max-width:600px){
  /* portada del blog */
  .blog-hero{padding-block:28px 8px}
  .blog-hero h1{font-size:2.15rem;max-width:none}
  .blog-hero .lead{font-size:1rem;margin-top:12px}
  .chips{position:sticky;top:var(--hdr);z-index:30;margin:18px -16px 0;padding:10px 16px;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px)}
  .list{padding-block:8px 64px}
  .grid{gap:12px}

  /* artículo destacado: portada a pantalla completa con el título encima */
  .card-big{position:relative;display:block;border:0;border-radius:24px;min-height:440px;box-shadow:var(--shadow);margin-bottom:12px}
  .card-big .cover{position:absolute;inset:0;aspect-ratio:auto;min-height:0;align-items:flex-start;padding:20px}
  .card-big .cover span{font-size:1rem;background:rgba(255,255,255,.16);backdrop-filter:blur(6px);padding:5px 12px;border-radius:999px}
  .card-big .card-body{position:absolute;left:0;right:0;bottom:0;padding:90px 22px 24px;background:linear-gradient(transparent,rgba(14,13,42,.92) 45%);color:#fff;gap:10px}
  .card-big .meta{color:rgba(255,255,255,.75)}
  .card-big .tag{display:none}
  .card-big h2{font-size:1.65rem;color:#fff}
  .card-big p{color:rgba(255,255,255,.8);font-size:.95rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .card-big .more{color:#fff;display:inline-flex;align-self:flex-start;background:var(--accent);color:var(--accent-ink);padding:9px 16px;border-radius:999px;margin-top:6px}

  /* resto de artículos: filas compactas */
  .grid .card:not(.card-big){display:grid;grid-template-columns:92px minmax(0,1fr);align-items:stretch;border-radius:18px}
  .grid .card:not(.card-big) .cover{aspect-ratio:auto;height:100%;min-height:104px;padding:10px}
  .grid .card:not(.card-big) .cover span{font-size:.72rem}
  .grid .card:not(.card-big) .cover::before{border-width:12px}
  .grid .card:not(.card-big) .card-body{padding:12px 14px;gap:5px}
  .grid .card:not(.card-big) .tag{display:none}
  .grid .card:not(.card-big) h2{font-size:1.02rem;line-height:1.25}
  .grid .card:not(.card-big) p,.grid .card:not(.card-big) .more{display:none}

  /* artículo: portada, título en tarjeta que se superpone */
  .post-cover{display:flex;aspect-ratio:auto;height:210px;border-radius:0;padding:18px 16px 56px;align-items:flex-start}
  .post-cover span{font-size:.9rem;background:rgba(255,255,255,.16);backdrop-filter:blur(6px);padding:5px 12px;border-radius:999px}
  .post-head{position:relative;z-index:2;margin-top:-40px;border-radius:26px 26px 0 0;background:var(--bg);padding-block:24px 22px;border-bottom:0}
  .post-head .tag{display:none}
  .post-head h1{font-size:1.9rem}
  .post-head .lead{font-size:1.02rem}
  .crumbs{font-size:.8rem}
  .byline{margin-top:4px;padding-top:14px;border-top:1px solid var(--border);flex-wrap:nowrap}
  .byline>div{min-width:0;flex:1}
  .byline .share{display:none}
  .post-grid{padding-block:4px 48px}
  .toc{display:none}

  /* lectura cómoda */
  body{font-size:17.5px}
  .prose{gap:1.1em}
  .prose p,.prose li{line-height:1.75}
  .prose h2{font-size:1.55rem;margin-top:1.5em;padding-top:18px;position:relative}
  .prose h2::before{content:"";position:absolute;top:0;left:0;width:36px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--primary),var(--accent))}
  .prose h3{font-size:1.18rem}
  .prose blockquote{font-size:1.2rem}
  .callout,.tldr{margin-inline:-6px;border-radius:18px;padding:18px}
  .tldr{background:linear-gradient(160deg,var(--primary-soft),color-mix(in srgb,var(--accent) 12%,var(--bg)))}
  .post-cta{margin-inline:-6px;flex-direction:column;align-items:stretch;text-align:left;border-radius:22px;padding:24px;position:relative;overflow:hidden}
  .post-cta::after{content:"";position:absolute;right:-30px;top:-30px;width:120px;height:120px;border-radius:50%;border:16px solid rgba(255,255,255,.08)}
  .post-cta .btn{justify-content:center}

  /* sigue leyendo: carrusel deslizable */
  .related{padding-block:40px 110px}
  .related h2{font-size:1.45rem;margin-bottom:16px}
  .related .grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:12px;margin-inline:-16px;padding:4px 16px 8px;scrollbar-width:none}
  .related .grid .card{flex:0 0 80%;scroll-snap-align:start;display:flex!important;flex-direction:column}
  .related .grid .card .cover{height:auto!important;aspect-ratio:16/9;min-height:0}
  .related .grid .card .card-body{padding:16px}

  /* barra inferior de lectura */
  .readbar{display:flex;position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));z-index:60;align-items:center;justify-content:space-between;gap:8px;background:var(--ink);color:var(--bg);border-radius:999px;padding:6px;box-shadow:0 16px 40px -12px rgba(0,0,0,.55);transform:translateY(150%);transition:transform .45s cubic-bezier(.2,.8,.2,1)}
  .readbar.show{transform:none}
  .rb-btn{display:inline-flex;align-items:center;gap:8px;font:inherit;font-weight:700;font-size:.9rem;color:inherit;background:color-mix(in srgb,var(--bg) 12%,var(--ink));border:0;border-radius:999px;padding:10px 16px;cursor:pointer}
  .rb-btn:active{transform:scale(.95)}
  .rb-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
  .rb-icon{padding:10px}
  .rb-prog{display:inline-flex;align-items:center;gap:8px;font-size:.82rem;font-family:var(--mono)}
  .rb-prog svg{width:30px;height:30px;transform:rotate(-90deg)}
  .rb-prog circle{fill:none;stroke-width:4}
  .rb-bg{stroke:color-mix(in srgb,var(--bg) 18%,var(--ink))}
  .rb-fg{stroke:var(--accent);stroke-linecap:round;stroke-dasharray:94.25;stroke-dashoffset:calc(94.25 * (1 - var(--p,0)))}
  .rb-prog b{font-weight:500;min-width:7ch}

  /* hoja inferior con el índice */
  .sheet-bg{display:block;position:fixed;inset:0;z-index:70;background:rgba(14,13,42,.45);opacity:0;pointer-events:none;transition:opacity .3s ease}
  .sheet{display:block;position:fixed;left:0;right:0;bottom:0;z-index:71;max-height:75vh;overflow-y:auto;background:var(--surface);border-radius:26px 26px 0 0;padding:10px 20px calc(24px + env(safe-area-inset-bottom,0px));transform:translateY(105%);transition:transform .4s cubic-bezier(.2,.8,.2,1);box-shadow:0 -20px 50px -20px rgba(0,0,0,.4)}
  body.sheet-open .sheet{transform:none}
  body.sheet-open .sheet-bg{opacity:1;pointer-events:auto}
  .grab{display:block;width:44px;height:5px;border-radius:5px;background:var(--border);margin:0 auto 16px}
  .sheet-title{display:block;font-family:var(--display);font-size:1.3rem;letter-spacing:-.02em;margin-bottom:10px}
  .sheet ol{list-style:none;margin:0;padding:0;counter-reset:t}
  .sheet li{counter-increment:t;border-top:1px solid var(--border)}
  .sheet a{display:flex;gap:14px;align-items:baseline;padding:14px 4px;text-decoration:none;font-weight:600;color:var(--ink-soft)}
  .sheet a::before{content:counter(t,decimal-leading-zero);font-family:var(--mono);font-size:.78rem;color:var(--ink-faint)}
  .sheet a.on{color:var(--primary)}
  .sheet a.on::before{color:var(--accent)}
  .foot{padding-bottom:96px}
}
@media (prefers-reduced-motion: reduce){.readbar,.sheet{transition:none}}