/* ===== Blog StudioAI ===== */
.blog-main{padding-top:68px}
.nav.solid{color:var(--ink)}

/* portada */
.blog-hero{padding:96px 0 40px}
.blog-hero h1{font-size:clamp(2.6rem,6vw,4.4rem);font-weight:800;letter-spacing:-.04em;line-height:1}
.blog-hero .lead{margin-top:18px}
.blog-list{padding:0}
.posts{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;padding-bottom:112px}
.post-card{display:flex;flex-direction:column;gap:14px;padding:32px;border-radius:var(--r-surface);background:var(--surface);border:1px solid var(--line);text-decoration:none;color:inherit;transition:border-color .25s,transform .35s var(--ease)}
.post-card:hover{border-color:var(--ink-2);transform:translateY(-3px)}
.post-card:active{transform:scale(.99)}
.post-card h2{font-size:clamp(1.4rem,2.4vw,1.85rem);max-width:none;line-height:1.12}
.post-card p{color:var(--ink-2);font-size:15.5px}
.post-card .meta{margin-top:auto}
.post-card.featured{grid-column:span 2;background:var(--dark);color:var(--dark-ink);border-color:transparent;padding:44px}
.post-card.featured h2{font-size:clamp(1.9rem,3.6vw,2.9rem);max-width:22ch}
.post-card.featured p{color:var(--dark-ink-2);max-width:62ch;font-size:1.05rem}
.post-card.featured .meta{color:var(--dark-ink-2)}
.post-card.featured .tag{background:rgba(255,255,255,.1);color:var(--dark-ink)}
.tag{align-self:flex-start;font-size:13px;font-weight:600;padding:6px 12px;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent)}
.meta{font-size:14px;color:var(--ink-2);display:flex;gap:14px;flex-wrap:wrap}

/* artículo */
.article{padding:80px 0 40px}
.article-head{max-width:700px;margin:0 auto 48px}
.back{display:flex;width:fit-content;gap:8px;align-items:center;font-size:15px;color:var(--ink-2);text-decoration:none;margin-bottom:28px}
.back:hover{color:var(--ink)}
.article-head h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:800;letter-spacing:-.04em;line-height:1.04;margin:16px 0 20px;text-wrap:balance}
.article-head .lead{font-size:1.2rem;max-width:none}
.article-head .meta{margin-top:22px}
.article-head .tag{display:inline-block}
.prose{max-width:700px;margin:0 auto;font-size:18px;line-height:1.75}
.prose>*+*{margin-top:1.15em}
.prose h2{font-size:clamp(1.55rem,3vw,2rem);max-width:none;margin-top:2.2em;line-height:1.15}
.prose h3{font-size:1.25rem;margin-top:1.8em}
.prose ul,.prose ol{padding-left:1.3em}
.prose li+li{margin-top:.5em}
.prose a{color:var(--accent);text-underline-offset:3px}
.prose strong{font-weight:600}
.prose mark{background:#FFE08A;color:#15181E;padding:0 4px;border-radius:4px}
.legal{padding-bottom:112px}
.callout{padding:24px 26px;border-radius:16px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent)}
.callout p{margin:0}
.stat{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:2em 0}
.stat div{padding:22px;border-radius:16px;background:var(--surface);border:1px solid var(--line)}
.stat strong{display:block;font:800 clamp(1.6rem,3vw,2.2rem)/1 var(--display);letter-spacing:-.03em;margin-bottom:8px}
.stat span{font-size:14.5px;color:var(--ink-2);line-height:1.45;display:block}
.sources{max-width:700px;margin:56px auto 0;padding-top:28px;border-top:1px solid var(--line);font-size:15px;color:var(--ink-2)}
.sources h2{font-size:1.1rem;margin-bottom:12px;max-width:none}
.sources ol{padding-left:1.2em;margin:0}
.sources li+li{margin-top:6px}
.sources a{color:inherit}
.article-cta{max-width:700px;margin:56px auto 0;padding:44px;border-radius:var(--r-surface);background:var(--accent);color:#fff;display:grid;gap:18px}
.article-cta h2{font-size:clamp(1.6rem,3vw,2.2rem);max-width:20ch}
.article-cta p{color:rgba(255,255,255,.88);max-width:52ch}
.article-cta .btn{justify-self:start;background:#fff;color:#15181E}
.related{max-width:700px;margin:72px auto 112px}
.related h2{font-size:1.4rem;margin-bottom:18px;max-width:none}
.related .posts{padding:0}

@media (max-width:767px){
  .posts{grid-template-columns:1fr}
  .post-card.featured{grid-column:auto;padding:30px}
  .post-card{padding:26px}
  .prose{font-size:17px}
  .stat{grid-template-columns:1fr}
  .article-cta{padding:30px}
  .blog-hero{padding:64px 0 32px}
  .article{padding:56px 0 24px}
}