/* Blog técnico: portada (listado) y artículos */

/* ---- Portada ---- */
.blog-hero{padding:36px 0 40px;background:var(--soft);border-bottom:1px solid var(--line)}
.blog-hero h1{font-size:clamp(1.9rem,3.6vw,2.6rem);line-height:1.12;font-weight:800;letter-spacing:-.02em;color:var(--navy);margin:10px 0 12px;max-width:24ch}
.blog-hero .lead{color:var(--muted);max-width:64ch;font-size:1.05rem}

.blog-cuerpo{padding:44px 0 64px}
.bl-grid{display:grid;grid-template-columns:250px 1fr;gap:48px;align-items:start}
.bl-lateral{position:sticky;top:100px;display:flex;flex-direction:column;gap:24px}
.bl-temas strong,.bl-contacto strong{display:block;font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--navy);margin-bottom:10px}
.bl-temas ul{list-style:none;border-top:1px solid var(--line)}
.bl-temas li{border-bottom:1px solid var(--line)}
.tema{display:flex;justify-content:space-between;padding:10px 2px;text-decoration:none;color:var(--text);font-size:.93rem}
.tema span{color:var(--muted);font-size:.85rem}
.tema:hover{color:var(--navy)}
.tema.activo{color:var(--navy);font-weight:700}
.bl-contacto{border:1px solid var(--line);border-left:4px solid var(--navy);padding:18px;background:#fff}
.bl-contacto p{font-size:.9rem;color:var(--muted);margin-bottom:14px}
.bl-contacto .btn{width:100%;padding:11px 16px}
.bl-tel{display:block;text-align:center;margin-top:10px;font-weight:600;color:var(--navy);text-decoration:none}

.bl-lista{list-style:none;border-top:2px solid var(--navy)}
.bl-fila{border-bottom:1px solid var(--line)}
.bl-fila a{display:grid;grid-template-columns:200px 1fr;gap:24px;padding:24px 0;text-decoration:none;color:inherit}
.bl-img{aspect-ratio:4/3;background:var(--soft);border:1px solid var(--line);overflow:hidden}
.bl-img img{width:100%;height:100%;object-fit:cover}
.bl-meta{display:block;font-size:.8rem;color:var(--muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}
.bl-meta b{color:var(--navy);font-weight:700}
.bl-txt h2{font-size:1.25rem;line-height:1.3;color:var(--navy);font-weight:700;margin-bottom:8px}
.bl-txt p{font-size:.94rem;color:var(--muted);margin-bottom:10px}
.bl-leer{font-size:.88rem;font-weight:600;color:var(--navy)}
.bl-fila a:hover h2{text-decoration:underline;text-underline-offset:4px}

/* ---- Artículo ---- */
.art-cab{padding:32px 0 28px;background:var(--soft);border-bottom:1px solid var(--line)}
.art-cab .wrap{max-width:980px}
.cp-cat{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--navy);text-decoration:none}
.art-cab h1{font-size:clamp(1.8rem,3.6vw,2.6rem);line-height:1.15;font-weight:800;letter-spacing:-.02em;color:var(--navy);margin:8px 0 14px}
.art-desc{font-size:1.08rem;color:var(--text);max-width:70ch}
.art-meta{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:.85rem;color:var(--muted)}
.art-firma{font-weight:600;color:var(--text)}

.art-portada{max-width:980px;margin:32px auto 0;border:1px solid var(--line);background:#fff;aspect-ratio:21/9;overflow:hidden}
.art-portada img{width:100%;height:100%;object-fit:cover}

.art-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;max-width:1100px;margin:40px auto 0;align-items:start}
.art-lateral{position:sticky;top:100px;display:flex;flex-direction:column;gap:10px}
.toc{border-top:2px solid var(--navy);padding-top:12px;margin-bottom:12px}
.toc strong{display:block;font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--navy);margin-bottom:8px}
.toc ol{list-style:none;counter-reset:toc}
.toc li{counter-increment:toc;border-bottom:1px solid var(--line)}
.toc a{display:flex;gap:8px;padding:8px 0;font-size:.86rem;line-height:1.35;color:var(--text);text-decoration:none}
.toc a::before{content:counter(toc) ".";color:var(--muted);min-width:18px}
.toc a:hover,.toc a.activo{color:var(--navy);font-weight:600}
.art-lateral .btn{padding:11px 16px}

.art-texto{max-width:740px;font-size:1.03rem;line-height:1.7;counter-reset:sec}
.art-texto>h2{counter-increment:sec;font-size:1.45rem;line-height:1.25;color:var(--navy);font-weight:800;margin:44px 0 14px;padding-top:14px;border-top:1px solid var(--line);scroll-margin-top:100px}
.art-texto>h2::before{content:counter(sec) ". ";color:var(--muted);font-weight:700}
.art-texto>h2:first-child{margin-top:0}
.art-texto h3{font-size:1.1rem;color:var(--navy);margin:26px 0 8px}
.art-texto p{margin-bottom:14px}
.art-texto ul,.art-texto ol{margin:0 0 16px 22px}
.art-texto li{margin-bottom:6px}
.art-texto a{color:var(--navy)}
.art-texto a.btn-p{color:#fff}
.art-texto a.btn{text-decoration:none}
.art-texto .tabla{margin:18px 0 22px}
.art-texto table.spec{font-size:.9rem}
.caja{border:1px solid var(--line);border-left:4px solid var(--navy);background:var(--soft);padding:14px 18px;margin:20px 0;font-size:.97rem}
.caja-importante{border-left-color:#b45309;background:#fffbeb}
.art-img{margin:24px 0;border:1px solid var(--line);background:#fff}
.art-img img{width:100%;height:auto;max-height:440px;object-fit:contain;background:var(--soft)}
.art-img figcaption{font-size:.85rem;color:var(--muted);padding:8px 12px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);padding:14px 0}
.faq-item h3{margin:0 0 6px;font-size:1.02rem}
.faq-item p{margin:0;color:var(--text)}
.fuentes{margin-top:32px;font-size:.88rem;color:var(--muted)}
.fuentes h2{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--navy);margin-bottom:6px}
.fuentes ul{margin-left:18px}

.art-cta{margin:40px 0 24px;padding:24px;border:1px solid var(--line);border-top:4px solid var(--navy);background:#fff}
.art-cta h2{font-size:1.3rem;color:var(--navy);margin-bottom:8px}
.art-cta p{color:var(--muted)}
.art-cta-b{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 0!important}
.art-empresa{display:flex;gap:18px;align-items:flex-start;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:.92rem;color:var(--muted)}
.art-empresa img{width:84px;height:auto;flex:none;mix-blend-mode:multiply}
.art-empresa strong{color:var(--text)}
.art-empresa a{color:var(--navy)}
.art-prods{margin-top:32px}
.art-prods h2{font-size:.78rem!important;text-transform:uppercase;letter-spacing:.1em;color:var(--navy);margin-bottom:10px}
.art-prods ul{list-style:none;margin:0;display:grid;gap:10px}
.art-prods a{display:block;border:1px solid var(--line);padding:14px 16px;text-decoration:none;background:#fff}
.art-prods a:hover{border-color:var(--navy)}
.art-prods strong{display:block;color:var(--navy)}
.art-prods span{font-size:.88rem;color:var(--muted)}
.art-sigue{background:var(--soft);margin-top:56px}
.art-sigue .bl-lista{background:#fff;padding:0 24px;border:1px solid var(--line);border-top:2px solid var(--navy)}
.art-sigue .bl-fila:last-child{border-bottom:0}

@media (max-width:1000px){
  .bl-grid,.art-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .bl-lateral,.art-lateral{position:static}
  .bl-lateral{order:2}
  .art-lateral .btn{display:none}
  .art-portada{aspect-ratio:16/9}
}
@media (max-width:620px){
  .bl-fila a{grid-template-columns:1fr;gap:12px}
  .bl-img{aspect-ratio:16/9}
  .art-texto{font-size:1rem}
  .art-sigue .bl-lista{padding:0 16px}
}