text/css article.css ( UTF-8 Unicode text, with very long lines )
/* =========================================================
   B2W Insights · Article System V2
   Home-aligned header/footer + responsive editorial layout
   ========================================================= */
:root{
  --article-deep:#041020;
  --article-deeper:#020915;
  --article-blue:#2056F8;
  --article-cyan:#64d9ff;
  --article-ink:#07111f;
  --article-muted:#617086;
  --article-surface:#f3f6fb;
  --article-line:#d8e2ef;
  --article-header-mobile:70px;
}

html{scroll-padding-top:96px}
body.article-page{background:#f5f8fc;color:var(--article-ink);overflow-x:clip}
.article-page main,.article-page article,.article-page section,.article-page div,.article-page aside{min-width:0}
.article-page img,.article-page svg{max-width:100%}
.article-page .site-header{z-index:1000}
.article-page .desktop-nav>a.is-active{color:#fff}
.article-page .desktop-nav>a.is-active::after{display:none!important}

/* HERO --------------------------------------------------- */
.b2w-article-hero{
  position:relative;
  overflow:hidden;
  padding:clamp(6.7rem,7.4vw,7.8rem) 0 clamp(2.6rem,3.8vw,3.8rem);
  background:radial-gradient(circle at 83% 35%,rgba(32,86,248,.33),transparent 29%),linear-gradient(135deg,#020915 0%,#071a38 55%,#0c2f73 100%);
  color:#fff;
}
.b2w-article-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);background-size:48px 48px;mask-image:linear-gradient(180deg,#000,transparent 92%);pointer-events:none}
.b2w-article-hero__grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) minmax(420px,.92fr);gap:clamp(2.4rem,4vw,4.6rem);align-items:center}
.b2w-article-hero__copy{max-width:760px}
.article-breadcrumb{display:flex;flex-wrap:wrap;gap:.55rem;align-items:center;margin-bottom:1rem;font-size:.72rem;color:#8ea5c4}
.article-breadcrumb a{color:#c7d7ea;text-decoration:none}.article-breadcrumb a:hover{color:var(--article-cyan)}
.draft-badge{display:inline-flex;margin:0 0 1rem;padding:.48rem .72rem;border:1px solid rgba(100,217,255,.28);border-radius:999px;color:#bfeeff;background:rgba(32,86,248,.10);font-size:.6rem;font-weight:900;letter-spacing:.1em}
.b2w-article-hero .eyebrow{margin-bottom:.5rem}
.b2w-article-hero h1{max-width:760px;margin:.3rem 0 .95rem;font-size:clamp(3rem,4.35vw,5rem);line-height:.92;letter-spacing:-.058em;text-wrap:balance}
.article-deck{max-width:720px;margin:0;color:#c6d2e2;font-size:clamp(1rem,1.28vw,1.22rem);line-height:1.62}
.article-meta{display:flex;flex-wrap:wrap;gap:.55rem;align-items:center;margin:1.15rem 0 1rem;color:#8fa2bb;font-size:.7rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.b2w-article-hero__media{position:relative;margin:0;aspect-ratio:4/3;max-height:500px;border-radius:26px;overflow:hidden;border:1px solid rgba(255,255,255,.12);box-shadow:0 28px 70px rgba(0,0,0,.28);background:#071b3d}
.b2w-article-hero__media img{width:100%;height:100%;object-fit:cover;display:block;filter:saturate(.82) contrast(1.05) brightness(.78)}
.b2w-article-hero__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,16,32,.02),rgba(4,16,32,.52))}
.b2w-article-hero__media figcaption{position:absolute;z-index:2;right:1.1rem;bottom:1rem;color:#cad9ec;font-size:.6rem;letter-spacing:.17em;text-transform:uppercase}

/* AUTHOR ------------------------------------------------- */
.article-author{display:flex;align-items:center;gap:.8rem}
.article-author__avatar{width:56px;height:56px;flex:0 0 56px;border-radius:50%;display:grid;place-items:center;overflow:hidden;background:linear-gradient(135deg,#2056f8,#64d9ff);color:#fff;font-weight:900;border:1px solid rgba(255,255,255,.15)}
.article-author__avatar img{width:100%;height:100%;object-fit:cover;display:block}
.article-author__copy{display:flex;flex-direction:column;gap:.12rem;min-width:0}
.article-author__copy strong{font-size:.9rem}.article-author__copy span{color:#8ea2ba;font-size:.74rem}.article-author__copy a{color:var(--article-cyan);font-size:.72rem;text-decoration:none}

/* MAIN LAYOUT ------------------------------------------- */
.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:clamp(2.2rem,4.8vw,5rem);align-items:start;padding-block:clamp(3.8rem,6vw,6.4rem)}
.article-main{min-width:0}.article-sidebar{position:sticky;top:104px;display:grid;gap:1rem}
.article-toc,.article-side-cta{border:1px solid var(--article-line);border-radius:22px;background:#fff;box-shadow:0 18px 50px rgba(31,65,115,.06)}
.article-toc{padding:1.25rem}.article-sidebar-title{margin:0 0 .8rem;font-size:.68rem;font-weight:900;letter-spacing:.13em;color:#213550}
.article-toc ol{list-style:none;padding:0;margin:0}.article-toc li+li{border-top:1px solid #e4ebf4}
.article-toc a{display:grid;grid-template-columns:34px 1fr;gap:.35rem;padding:.68rem 0;color:#3f4f64;text-decoration:none;font-size:.78rem;line-height:1.32}
.article-toc a span{color:var(--article-blue);font-weight:900}.article-toc a:hover,.article-toc a.is-active{color:var(--article-blue)}
.article-side-cta{padding:1.45rem;background:linear-gradient(145deg,#071426,#0b2a5d);color:#fff;border-color:#173e77}
.article-side-cta h2{font-size:clamp(1.7rem,2.2vw,2.3rem);line-height:1;letter-spacing:-.045em}.article-side-cta p:not(.eyebrow){color:#aebfd3;line-height:1.55}.article-side-cta .button{margin-top:.6rem}

/* MOBILE TOC -------------------------------------------- */
.article-toc-mobile{display:none;margin:0 0 2.2rem;border:1px solid var(--article-line);border-radius:18px;background:#fff;box-shadow:0 12px 32px rgba(31,65,115,.06);overflow:hidden}
.article-toc-mobile summary{list-style:none;display:grid;grid-template-columns:1fr auto;align-items:center;gap:1rem;padding:1rem 1.05rem;cursor:pointer}
.article-toc-mobile summary::-webkit-details-marker{display:none}
.article-toc-mobile__label{display:block;color:#233650;font-size:.65rem;font-weight:900;letter-spacing:.12em}
.article-toc-mobile__current{display:block;margin-top:.28rem;color:#07111f;font-size:.9rem;font-weight:800;line-height:1.3}
.article-toc-mobile__counter{display:inline-flex;align-items:center;gap:.55rem;color:var(--article-blue);font-size:.72rem;font-weight:900}
.article-toc-mobile__counter::after{content:"⌄";font-size:1rem;color:#07111f;transition:transform .2s ease}.article-toc-mobile[open] .article-toc-mobile__counter::after{transform:rotate(180deg)}
.article-toc-mobile nav{padding:0 1.05rem 1rem;border-top:1px solid #e3ebf4}.article-toc-mobile ol{list-style:none;margin:0;padding:0}.article-toc-mobile li+li{border-top:1px solid #e3ebf4}.article-toc-mobile a{display:grid;grid-template-columns:34px 1fr;gap:.4rem;padding:.72rem 0;color:#42536a;text-decoration:none;font-size:.82rem;line-height:1.32}.article-toc-mobile a span{color:var(--article-blue);font-weight:900}.article-toc-mobile a.is-active{color:var(--article-blue);font-weight:800}

/* PROSE -------------------------------------------------- */
.article-prose{font-size:1.035rem;line-height:1.78;color:#23324b;overflow-wrap:anywhere}
.article-prose>p:first-child{font-size:clamp(1.16rem,1.55vw,1.38rem);line-height:1.62;color:#34475f}
.article-prose h2{scroll-margin-top:104px;margin:clamp(3.2rem,5vw,5rem) 0 .95rem;font-size:clamp(2.15rem,3.5vw,3.7rem);line-height:1;letter-spacing:-.052em;color:#081a39;text-wrap:balance}
.article-prose h2::before{display:block;content:"INSIGHT / B2W";margin-bottom:.58rem;color:var(--article-blue);font-size:.65rem;font-weight:900;letter-spacing:.14em}
.article-prose h3{scroll-margin-top:104px;margin:2rem 0 .65rem;font-size:clamp(1.3rem,1.75vw,1.7rem);line-height:1.16;color:#10264f;letter-spacing:-.025em;text-wrap:balance}
.article-prose p{margin:0 0 1.1rem}.article-prose strong{color:#0b1a2e}.article-prose a{color:var(--article-blue)}.article-prose ul,.article-prose ol{padding-left:1.2rem}.article-prose li{margin:.45rem 0}
.article-prose blockquote{margin:1.8rem 0;padding:1.35rem 1.45rem;border:1px solid #d8e4f3;border-left:4px solid var(--article-blue);border-radius:18px;background:linear-gradient(135deg,#f8fbff,#edf4ff);color:#1b3358}
.article-prose blockquote p:last-child{margin-bottom:0}.source-note{color:#617086;font-size:.9em}.pending-label{color:#2056F8;font-weight:900}.article-prose blockquote:has(.pending-label){border-color:#d8e4f3;border-left-color:#2056F8;background:linear-gradient(135deg,#f8fbff,#edf4ff);color:#1b3358}
.article-prose pre{max-width:100%;overflow:auto;padding:1.3rem;border-radius:20px;background:#071426;color:#d7e8ff;border:1px solid #143764;font-size:.84rem;line-height:1.55}.article-prose code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* TABLES ------------------------------------------------- */
.table-scroll{margin:1.5rem 0 1.9rem;border:1px solid var(--article-line);border-radius:18px;background:#fff;overflow:hidden}
.article-table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:.89rem}
.article-table th,.article-table td{padding:.82rem .9rem;text-align:left;border-bottom:1px solid #e3ebf4;vertical-align:top;overflow-wrap:anywhere}
.article-table th{background:#eff4fb;color:#10264f;font-weight:900}.article-table tr:last-child td{border-bottom:0}

/* RESPONSIVE DIAGRAMS ------------------------------------ */
.article-flow{margin:1.7rem 0 2rem;padding:1.35rem;border:1px solid #143764;border-radius:22px;background:linear-gradient(145deg,#06152d,#071426);color:#fff;display:grid;gap:.7rem}
.article-flow__node{display:grid;grid-template-columns:36px minmax(0,1fr);gap:.7rem;align-items:start;padding:.85rem .9rem;border:1px solid rgba(126,164,231,.14);border-radius:14px;background:rgba(255,255,255,.03)}
.article-flow__node span{color:#64d9ff;font-size:.65rem;font-weight:900;letter-spacing:.1em}.article-flow__node strong{font-size:.98rem;line-height:1.3}.article-flow__node small{grid-column:2;color:#9fb4cd;line-height:1.45}.article-flow__node.is-accent{background:rgba(32,86,248,.14);border-color:rgba(100,217,255,.25)}
.article-flow__arrow{text-align:center;color:#64d9ff;font-size:1rem;line-height:1}
.performance-loop{margin:1.7rem 0 2rem;padding:1.35rem;border:1px solid #143764;border-radius:22px;background:linear-gradient(145deg,#06152d,#071426);color:#fff}
.performance-loop__track{display:grid;grid-template-columns:repeat(9,auto);align-items:center;justify-content:space-between;gap:.45rem}
.performance-loop__step{display:flex;flex-direction:column;gap:.2rem;min-width:0;padding:.8rem .75rem;border:1px solid rgba(126,164,231,.14);border-radius:13px;background:rgba(255,255,255,.03)}
.performance-loop__step span{color:#64d9ff;font-size:.58rem;font-weight:900;letter-spacing:.1em}.performance-loop__step strong{font-size:.78rem;text-transform:uppercase;white-space:nowrap}.performance-loop__step.is-accent{background:rgba(32,86,248,.18);border-color:rgba(100,217,255,.28)}
.performance-loop__connector{color:#64d9ff;font-size:1rem}.performance-loop>p{margin:1rem 0 0!important;color:#aebfd3;font-size:.82rem;line-height:1.5}

/* AUTHOR MODULE ------------------------------------------ */
.article-author-module{margin-top:4.4rem;padding:1.8rem;border-radius:24px;background:#eef3f9;border:1px solid #d8e1ed}
.article-author-module h2{font-size:clamp(2rem,3.5vw,3.4rem);letter-spacing:-.05em;margin:.2rem 0 1.25rem}.article-author-module .article-author__copy span{color:#66768b}.article-author-module>p:not(.eyebrow){max-width:720px;color:#56667a;line-height:1.7}.article-author-module small{display:block;margin-top:1rem;color:#7a8798}

/* FAQ + NEXT --------------------------------------------- */
.article-faq-band{padding:clamp(3.8rem,6vw,5.8rem) 0;background:linear-gradient(135deg,#020915,#081d3d 60%,#0b2e6c);color:#fff}.article-faq-band__grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(2rem,5vw,5rem)}.article-faq-band h2{font-size:clamp(2.6rem,4.8vw,4.7rem);line-height:.95;letter-spacing:-.055em}.article-faq-band .faq-list details{border-color:rgba(255,255,255,.13)}.article-faq-band .faq-list summary{color:#fff}.article-faq-band .faq-list p{color:#aebfd3}
.article-next{background:#eef3f9;padding:clamp(3.3rem,5vw,5rem) 0}.article-next__inner{display:grid;grid-template-columns:1fr auto;gap:2rem;align-items:end}.article-next h2{max-width:900px;margin:.3rem 0 0;font-size:clamp(2.35rem,4.5vw,4.5rem);line-height:.95;letter-spacing:-.055em;color:#07111f}.article-next__arrow{width:68px;height:68px;border-radius:50%;display:grid;place-items:center;background:#07111f;color:#fff;text-decoration:none;font-size:1.8rem;transition:.25s}.article-next__arrow:hover{background:var(--article-blue);transform:translate(4px,-4px)}

/* TABLET ------------------------------------------------- */
@media(max-width:1100px){
  .b2w-article-hero__grid{grid-template-columns:minmax(0,1fr) minmax(340px,.82fr);gap:2rem}
  .b2w-article-hero h1{font-size:clamp(3rem,5.7vw,4.8rem)}
  .article-shell{grid-template-columns:minmax(0,1fr) 285px;gap:2rem}
  .article-toc a{font-size:.74rem}
  .performance-loop__track{grid-template-columns:1fr;gap:.45rem}.performance-loop__connector{transform:rotate(90deg);justify-self:center}.performance-loop__step strong{white-space:normal}
}

@media(max-width:900px){
  .b2w-article-hero{padding-top:7.7rem}
  .b2w-article-hero__grid{grid-template-columns:1fr;align-items:start}
  .b2w-article-hero__copy{max-width:760px}
  .b2w-article-hero h1{max-width:700px}
  .b2w-article-hero__media{max-width:760px;width:100%;aspect-ratio:16/10;max-height:none}
  .article-shell{grid-template-columns:1fr}.article-sidebar{position:static}.article-sidebar .article-toc{display:none}.article-toc-mobile{display:block}.article-side-cta{max-width:620px}
  .article-faq-band__grid{grid-template-columns:1fr}
}

/* MOBILE ------------------------------------------------- */
@media(max-width:760px){
  html{scroll-padding-top:82px}
  body.article-page{overflow-x:clip}
  .article-page .site-header{height:70px}
  .article-page .desktop-nav>a.is-active::after{display:none}

  /* Espacio seguro entre header móvil y hero */
  .b2w-article-hero{
    padding:6.5rem 0 1.65rem;
  }

  .article-breadcrumb{display:none}
  .draft-badge{margin-bottom:.7rem;font-size:.54rem;padding:.42rem .58rem;max-width:100%}
  .b2w-article-hero .eyebrow{font-size:.62rem;letter-spacing:.14em}

  /* H1 optimizado para títulos editoriales largos */
  .b2w-article-hero h1{
    max-width:100%;
    font-size:clamp(2rem,8.3vw,2.55rem);
    line-height:1.10;
    letter-spacing:-.035em;
    text-wrap:balance;
    margin:.45rem 0 .9rem;
  }

  .article-deck{font-size:.96rem;line-height:1.55}

  /* Tables become readable cards instead of horizontal desktop tables */
  .table-scroll{border:0;background:transparent;overflow:visible;border-radius:0}
  .article-table,.article-table tbody,.article-table tr,.article-table td{display:block;width:100%}
  .article-table{table-layout:auto;font-size:.9rem}.article-table thead{display:none}.article-table tbody{display:grid;gap:.75rem}
  .article-table tr{border:1px solid var(--article-line);border-radius:16px;background:#fff;overflow:hidden}
  .article-table td{border:0!important;padding:.72rem .9rem}.article-table td+td{border-top:1px solid #e4ebf4!important}
  .article-table td:first-child{background:#eff4fb;color:#10264f;font-weight:900}
  .article-table td:not(:first-child)::before{display:block;margin-bottom:.22rem;color:#2056F8;font-size:.62rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
  .article-table td:not(:first-child)::before{content:attr(data-label)}

  .article-flow,.performance-loop{padding:1rem;border-radius:18px;margin:1.4rem 0 1.7rem}
  .article-flow__node{grid-template-columns:30px 1fr;padding:.75rem}.article-flow__node strong{font-size:.9rem}.article-flow__node small{font-size:.76rem}
  .performance-loop__track{display:grid;grid-template-columns:1fr;gap:.45rem}.performance-loop__connector{transform:none;text-align:center}.performance-loop__connector::before{content:"↓"}.performance-loop__connector{font-size:0}.performance-loop__connector::before{font-size:1rem}.performance-loop__step{padding:.75rem .85rem}.performance-loop__step strong{font-size:.82rem;white-space:normal}

  .article-author-module{margin-top:3.4rem;padding:1.2rem;border-radius:18px}.article-author-module h2{font-size:2.15rem}.article-author-module>p:not(.eyebrow){font-size:.93rem}
  .article-side-cta{display:none}
  .article-faq-band{padding:3.2rem 0}.article-faq-band h2{font-size:2.5rem}
  .article-next{padding:3rem 0}.article-next__inner{grid-template-columns:1fr}.article-next h2{font-size:2.35rem}.article-next__arrow{width:56px;height:56px}
}

@media(max-width:480px){
  .b2w-article-hero h1{font-size:clamp(2.25rem,10.6vw,3rem)}
  .b2w-article-hero__grid{gap:1.2rem}
  .article-meta{letter-spacing:.05em}
  .article-toc-mobile{border-radius:16px}.article-toc-mobile summary{padding:.9rem}.article-toc-mobile nav{padding:0 .9rem .85rem}
  .article-prose h2{font-size:clamp(1.9rem,9.5vw,2.55rem)}
  .article-next h2{font-size:2rem}
}


/* =========================================================
   V3 · Brand consistency / responsive hardening
   ========================================================= */
.article-page .mobile-menu,
.article-page .mobile-menu a,
.article-page .mobile-menu summary{
  color:#f7f9ff;
}
.article-page .mobile-menu details>a{color:#a8b4c8}
.article-page .mobile-menu a:hover,
.article-page .mobile-menu a:focus-visible,
.article-page .mobile-menu summary:hover,
.article-page .mobile-menu summary:focus-visible{color:#64d9ff}

/* Never let editorial components widen the viewport. */
.article-prose,
.article-prose>*,
.article-flow,
.performance-loop,
.table-scroll,
.article-toc-mobile{min-width:0;max-width:100%}

/* Brighter content inside dark responsive diagrams. */
.article-flow__node strong,
.performance-loop__step strong{color:#f7f9ff}
.article-flow__node small,
.performance-loop>p{color:#b8c8dc}
.article-flow__node,
.performance-loop__step{background:rgba(255,255,255,.045)}
.article-flow__node.is-accent,
.performance-loop__step.is-accent{
  background:linear-gradient(135deg,rgba(32,86,248,.28),rgba(66,104,239,.15));
  border-color:rgba(100,217,255,.38)
}

@media(min-width:1101px){
  .article-page .site-header .container.nav-shell{
    width:min(calc(100% - 40px),1280px);
  }
  .article-page .site-header .desktop-nav{flex:1;justify-content:flex-end}
}

@media(max-width:760px){
  .article-page .mobile-menu{
    background:#050d1a;
    color:#f7f9ff;
  }
  .article-page .mobile-menu.open{display:block}
  .article-flow__node strong{font-size:.92rem}
  .article-flow__node small{color:#b7c9df}
  .performance-loop__step strong{color:#fff}
  .performance-loop__step span{color:#64d9ff}
}

@media(max-width:390px){
  .b2w-article-hero h1{font-size:clamp(2.05rem,9.5vw,2.65rem)}
  .article-deck{font-size:.92rem}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto!important}.article-next__arrow,.article-toc-mobile__counter::after{transition:none}}