/* ============================================================
   Cristian Betancort Niz — site.css
   Tema claro. Azul como color de identidad (acentos), no de fondo.
   ============================================================ */
:root{
  --mono:"Space Mono",ui-monospace,Menlo,monospace;
  --bg:#f7f9fc; --bg-2:#eef3fa; --surface:#ffffff; --surface-2:#f3f6fb;
  --line:#e3e9f2; --line-strong:#cbd6e6;
  --ink:#0b1228; --ink-2:#2b3650; --muted:#5d6b85;
  --blue:#1d4ed8; --blue-2:#2563eb; --sky:#3b82f6; --cyan:#0ea5e9; --blue-soft:#e8f0fe;
  --grad:linear-gradient(100deg,#1d4ed8 0%,#2563eb 50%,#0ea5e9 100%);
  --shadow:0 1px 2px rgba(11,18,40,.04), 0 12px 32px -16px rgba(11,18,40,.14);
  --shadow-lg:0 2px 4px rgba(11,18,40,.05), 0 30px 60px -24px rgba(29,78,216,.25);
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --max:1160px; --r:20px; --ease:cubic-bezier(.2,.7,.2,1);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg,picture{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.03em;line-height:1.05;color:var(--ink)}
h2{font-size:clamp(30px,4.4vw,52px)}
h2 em,h1 em{font:italic 300 1.08em/1 var(--serif);letter-spacing:-.01em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
h3{font-size:20px;letter-spacing:-.02em;line-height:1.25}
p{margin:0 0 16px}
.wrap{max-width:var(--max);margin:0 auto;padding-left:20px;padding-right:20px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;background:var(--blue);color:#fff;padding:8px 12px;border-radius:8px;z-index:50}
.two{display:grid;grid-template-columns:1fr 1.4fr;gap:56px;align-items:start}
@media (max-width:860px){.two{grid-template-columns:1fr;gap:28px}}

/* ambiente: manchas azules muy suaves */
.bg-orbs{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.bg-orbs i{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55}
.bg-orbs i:nth-child(1){width:60vw;height:60vw;left:-25vw;top:20vh;background:radial-gradient(circle,#dbe7ff,transparent 60%)}
.bg-orbs i:nth-child(2){width:50vw;height:50vw;right:-20vw;top:90vh;background:radial-gradient(circle,#dff3ff,transparent 60%)}
.bg-orbs i:nth-child(3){width:40vw;height:40vw;left:30vw;top:180vh;background:radial-gradient(circle,#e3ebff,transparent 60%);opacity:.4}

/* eyebrow / pills / buttons */
.eyebrow{display:inline-flex;align-items:center;gap:10px;margin:0 0 18px;font:700 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--blue)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--blue-2);box-shadow:0 0 0 4px rgba(37,99,235,.14);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(37,99,235,.14)}50%{box-shadow:0 0 0 8px rgba(37,99,235,.05)}}
.pills{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:22px 0 0;padding:0}
.pills li{padding:7px 14px;border:1px solid var(--line-strong);border-radius:999px;font-size:14px;color:var(--ink-2);background:#fff}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border-radius:999px;font-weight:600;font-size:15px;text-decoration:none;border:1px solid var(--line-strong);color:var(--ink);background:#fff;transition:transform .25s var(--ease),background .25s,border-color .25s,box-shadow .25s;white-space:nowrap}
.btn:hover{transform:translateY(-2px);border-color:var(--sky);background:var(--blue-soft)}
.btn-primary{background:linear-gradient(135deg,#1d4ed8,#0ea5e9);border-color:transparent;color:#fff;box-shadow:0 10px 24px -10px rgba(29,78,216,.6)}
.btn-primary:hover{box-shadow:0 16px 34px -10px rgba(29,78,216,.7);background:linear-gradient(135deg,#2563eb,#38bdf8)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn span{transition:transform .25s var(--ease)}.btn:hover span{transform:translateX(3px)}

/* nav */
.nav{position:sticky;top:0;z-index:40;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);background:rgba(247,249,252,.78);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.brand-mark{width:34px;height:34px;display:block}
.brand-text{font:700 19px/1 var(--mono);letter-spacing:-.04em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--blue)}
.foot-brand{display:inline-flex;align-items:center;gap:8px}
.nav ul{display:flex;align-items:center;gap:26px;list-style:none;margin:0;padding:0;font-size:15px}
.nav li a:not(.btn){text-decoration:none;color:var(--ink-2);transition:color .2s}.nav li a:not(.btn):hover{color:var(--blue)}
.menu-btn{display:none}
@media (max-width:760px){
  .brand-text{font-size:16px}
  .menu-btn{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0 10px;border:1px solid var(--line-strong);border-radius:12px;background:#fff;cursor:pointer}
  .menu-btn span{display:block;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s var(--ease),opacity .2s}
  .menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
  .menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg)}
  .nav nav.is-open{display:block}
  .nav ul{flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 16px}
  .nav li a:not(.btn){display:block;padding:14px 4px;font-size:17px;font-weight:600;border-bottom:1px solid var(--line)}
  .nav li:last-child{padding-top:14px}
  .nav li .btn{display:inline-flex;justify-content:center;width:100%}
}

/* ============ HERO ============ */
.hero{position:relative;padding:72px 0 40px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-25% -10% auto auto;width:70vw;height:70vw;max-width:900px;max-height:900px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.18),rgba(14,165,233,.08) 45%,transparent 70%);filter:blur(30px);z-index:-1}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-copy{max-width:640px}
h1{font-size:clamp(44px,6.4vw,88px);line-height:.95;font-weight:800;letter-spacing:-.045em;margin:0 0 26px}
.dot-accent{color:var(--blue)}
h1 .thin{font:italic 300 .92em/1 var(--serif);letter-spacing:-.01em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:clamp(18px,2vw,22px);line-height:1.5;color:var(--ink-2);max-width:560px;margin-bottom:30px}
.lede em{font:italic 400 1.05em/1 var(--serif);color:var(--blue)}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.stats{display:grid;grid-template-columns:repeat(4,auto);gap:24px 36px;margin:52px 0 0;padding:26px 0 0;border-top:1px solid var(--line-strong);max-width:680px}
.stats div{display:flex;flex-direction:column-reverse;gap:4px}
.stats dd{margin:0;font-size:clamp(28px,3vw,40px);font-weight:800;letter-spacing:-.04em;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stats dt{font:500 13.5px/1.35 var(--sans);color:var(--muted);max-width:150px}
.hero-photo{position:relative;margin:0;justify-self:end;width:100%;max-width:440px}
.hero-photo::before{content:"";position:absolute;inset:18px -18px -18px 18px;border-radius:32px;background:linear-gradient(135deg,rgba(29,78,216,.35),rgba(14,165,233,.12));z-index:-1;filter:blur(2px)}
.hero-photo img{width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;border-radius:28px;border:1px solid #fff;box-shadow:var(--shadow-lg)}
@media (max-width:980px){.hero-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:760px){
  .hero{padding:32px 0 24px}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-photo{order:-1;justify-self:center;max-width:340px}
  .hero-photo img{aspect-ratio:1/1;object-position:50% 20%}
  .stats{grid-template-columns:1fr 1fr;gap:20px}
}

/* ============ LOGOS BAND ============ */
.logos-band{padding:28px 0 56px}
.band-title{margin:0 0 22px;font:700 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);text-align:center}
.marquee{position:relative;overflow:hidden;mask-image:linear-gradient(to right,transparent,#000 10%,#000 90%,transparent);-webkit-mask-image:linear-gradient(to right,transparent,#000 10%,#000 90%,transparent)}
.marquee-track{display:flex;align-items:center;gap:64px;width:max-content;padding:8px 0;animation:marquee 46s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marquee{to{transform:translateX(-50%)}}
.logo{display:flex;align-items:center;justify-content:center;height:40px;min-width:90px;max-width:160px;opacity:.6;filter:grayscale(1);transition:opacity .3s,filter .3s}
.logo:hover{opacity:1;filter:none}
.logo img,.logo svg{height:100%;width:auto;max-width:160px;object-fit:contain}
.logo-text{font-weight:700;font-size:17px;letter-spacing:-.02em;color:var(--ink-2);white-space:nowrap}
@media (max-width:760px){.marquee-track{gap:36px}.logo{height:30px}.logos-band{padding:0 0 32px}}
@media (prefers-reduced-motion:reduce){.marquee-track{animation:none;flex-wrap:wrap;width:auto;justify-content:center}.marquee{mask-image:none;-webkit-mask-image:none}.dot{animation:none}}

/* ============ SECTIONS ============ */
section{padding:96px 0}
@media (max-width:760px){section{padding:64px 0}}
.section-head{max-width:760px;margin-bottom:48px}
.section-head.split{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* manifesto */
.manifesto{padding-top:40px}
.manifesto-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:center}
@media (max-width:900px){.manifesto-grid{grid-template-columns:1fr;gap:40px}}
.manifesto-quote blockquote{margin:0 0 22px;padding:0}
.manifesto-quote blockquote p{font:300 clamp(32px,4.6vw,58px)/1.08 var(--serif);letter-spacing:-.02em;margin:0;color:var(--ink)}
.manifesto-quote blockquote em{font-style:italic;color:var(--sky)}
.manifesto-quote blockquote strong{font-weight:500;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.manifesto-sub{color:var(--muted);font-size:18px;max-width:520px}
.manifesto-bio{padding:36px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.manifesto-bio h2{font-size:26px;margin-bottom:16px}
.manifesto-bio p{color:var(--ink-2)}
.manifesto-bio a{color:var(--blue);text-decoration-color:rgba(29,78,216,.35)}

/* services cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:900px){.cards{grid-template-columns:1fr}}
.card{position:relative;padding:30px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);transition:transform .35s var(--ease),border-color .35s,box-shadow .35s;box-shadow:var(--shadow)}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--line-strong)}
.card-icon{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);margin-bottom:22px}
.card-icon svg{width:24px;height:24px}
.card h3{margin-bottom:10px}
.card p{color:var(--muted);font-size:16px}
.card-list{margin:18px 0 0;padding:0;list-style:none;font-size:14.5px;color:var(--ink-2)}
.card-list li{padding:8px 0 8px 22px;border-top:1px solid var(--line);position:relative}
.card-list li::before{content:"";position:absolute;left:4px;top:16px;width:6px;height:6px;border-radius:50%;background:var(--sky)}

/* timeline */
.timeline{list-style:none;margin:0;padding:0;position:relative}
.timeline::before{content:"";position:absolute;left:190px;top:8px;bottom:8px;width:1px;background:linear-gradient(to bottom,var(--sky),var(--line) 60%,transparent)}
.timeline li{display:grid;grid-template-columns:160px 1fr;gap:60px;padding:28px 0;position:relative}
.timeline li::before{content:"";position:absolute;left:185px;top:38px;width:11px;height:11px;border-radius:50%;background:#fff;border:2px solid var(--sky);box-shadow:0 0 0 5px rgba(59,130,246,.12)}
.timeline li:first-child::before{background:var(--sky)}
.tl-when{font:400 13px/1.4 var(--mono);color:var(--muted);padding-top:6px}
.tl-body{padding:26px 28px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);transition:border-color .3s,box-shadow .3s}
.tl-body:hover{border-color:var(--line-strong);box-shadow:var(--shadow-lg)}
.tl-head{display:flex;align-items:center;gap:16px;margin-bottom:8px}
.tl-head .logo{height:34px;min-width:34px;max-width:120px;opacity:1;filter:none;flex:0 0 auto}
.tl-head .logo img{max-width:120px}
.tl-org{color:var(--blue);font-weight:600;font-size:15px;margin:4px 0 0}
.tl-body>p{color:var(--muted);font-size:16px;margin:12px 0 0}
.tl-logos{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
.tl-logos .logo{height:30px;min-width:0;max-width:150px;opacity:.85;filter:none}
.tl-logos .logo img{max-width:150px}
@media (max-width:760px){.timeline::before{left:6px}.timeline li{grid-template-columns:1fr;gap:8px;padding-left:28px}.timeline li::before{left:1px;top:34px}}

/* blog cards */
.posts{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media (max-width:860px){.posts{grid-template-columns:1fr}}
.post{display:flex;flex-direction:column;gap:14px;padding:28px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);text-decoration:none;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.post:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--line-strong)}
.post-meta{display:flex;gap:10px;align-items:center;font:400 12.5px/1.4 var(--mono);color:var(--muted)}
.post-cat{padding:4px 10px;border-radius:999px;background:var(--blue-soft);color:var(--blue);font:700 11px/1.4 var(--mono);letter-spacing:.04em;text-transform:uppercase}
.post h3{font-size:22px}
.post p{color:var(--muted);font-size:15.5px;margin:0}
.post-more{margin-top:auto;color:var(--blue);font-weight:600;font-size:15px}
.post.featured{grid-column:1/-1;display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:center;padding:36px}
.post.featured h3{font-size:clamp(26px,3vw,36px)}
.post-visual{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}
.post-visual .post-cover{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;display:block;transition:transform .6s var(--ease)}
.post:hover .post-cover{transform:scale(1.03)}
.post:not(.featured) .post-visual{margin:-10px -10px 4px}
.article-cover{max-width:820px;margin:0 auto 28px;padding:0 20px}
.article-cover img{width:100%;height:auto;border-radius:var(--r);border:1px solid var(--line);box-shadow:var(--shadow)}
@media (max-width:860px){.post.featured{grid-template-columns:1fr}.post.featured .post-visual{order:-1}}

/* newsletter */
.newsletter{padding:0 0 8px}
.teaching{padding-top:72px}
.nl-card{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:40px;border-radius:24px;background:radial-gradient(120% 160% at 100% 0%,rgba(14,165,233,.35),transparent 50%),linear-gradient(135deg,#1e3a8a,#1d4ed8);border:1px solid transparent;box-shadow:var(--shadow-lg);flex-wrap:wrap;color:#fff}
.nl-card h2{font-size:clamp(26px,3.4vw,40px);margin-bottom:10px;color:#fff}
.nl-card .eyebrow{color:#bfdbfe}.nl-card .dot{background:#bfdbfe;box-shadow:0 0 0 4px rgba(255,255,255,.15)}
.nl-card p{color:#dbeafe;margin:0;max-width:560px}
.nl-card .btn-primary{background:#fff;color:var(--blue);box-shadow:0 10px 24px -10px rgba(0,0,0,.4)}
.nl-card .btn-primary:hover{background:#eff6ff}

/* teaching + certs */
.teach-list{list-style:none;margin:0;padding:0}
.teach-list li{display:flex;align-items:center;gap:16px;padding:16px 0;border-top:1px solid var(--line)}
.teach-list li>div{display:flex;flex-direction:column;gap:2px}
.teach-list .logo{flex:0 0 auto;width:72px;height:36px;min-width:0;max-width:72px;opacity:1;filter:none;justify-content:flex-start}
.teach-list .logo img{max-width:72px;max-height:36px}
.teach-list li:last-child{border-bottom:1px solid var(--line)}
.teach-list span{color:var(--muted);font-size:15px}
.certs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:600px){.certs{grid-template-columns:1fr}}
.certs li{display:flex;gap:14px;align-items:center;padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:var(--surface)}
.certs .logo{height:26px;min-width:26px;max-width:60px;opacity:1;filter:none;flex:0 0 auto}
.certs .logo img{max-width:60px}
.certs strong{display:block;font-size:14.5px;line-height:1.3}
.certs span{color:var(--muted);font-size:13px}

/* faq */
details{border-top:1px solid var(--line);padding:18px 0}
details:last-child{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font-weight:600;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--blue);font-size:24px;line-height:1;font-weight:300;transition:transform .3s var(--ease)}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--muted);margin:12px 0 0;max-width:640px}

/* contact */
.contact-card{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;padding:52px;border-radius:28px;background:radial-gradient(90% 120% at 0% 100%,rgba(14,165,233,.35),transparent 55%),radial-gradient(60% 80% at 100% 0%,rgba(96,165,250,.25),transparent 60%),linear-gradient(135deg,#0b1228,#1e3a8a);box-shadow:var(--shadow-lg);color:#fff}
.contact-card h2{font-size:clamp(28px,3.4vw,42px);margin-bottom:16px;color:#fff}
.contact-card .eyebrow{color:#93c5fd}.contact-card .dot{background:#93c5fd;box-shadow:0 0 0 4px rgba(255,255,255,.12)}
.contact-copy p{color:#cbd5e1;margin:0;font-size:17px}
.contact-tags{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:22px 0 0;padding:0}
.contact-tags li{padding:6px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);font-size:13px;color:#e2e8f0}
.contact-list{display:flex;flex-direction:column;gap:10px}
.contact-item{display:grid;grid-template-columns:44px 1fr auto;gap:16px;align-items:center;padding:14px 16px;border-radius:16px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);text-decoration:none;color:#fff;transition:background .25s,transform .25s var(--ease),border-color .25s}
.contact-item:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);transform:translateX(4px)}
.ci-ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:rgba(255,255,255,.14)}
.ci-ico.ci-logo{background:#fff;padding:6px}
.ci-ico.ci-logo .logo{height:30px;width:30px;min-width:0;max-width:30px;opacity:1;filter:none}
.ci-ico.ci-logo .logo img{height:100%;width:100%;max-width:30px;object-fit:contain}
.ci-text{display:flex;flex-direction:column;gap:2px;min-width:0}
.ci-text strong{font-size:15.5px}
.ci-text span{font-size:13.5px;color:#cbd5e1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ci-arrow{color:#93c5fd;font-weight:600;transition:transform .25s var(--ease)}
.contact-item:hover .ci-arrow{transform:translateX(3px)}
@media (max-width:900px){.contact-card{grid-template-columns:1fr;padding:32px 24px;gap:28px}.ci-text span{white-space:normal}}

/* eyebrow con logo */
.eyebrow-brand{flex-wrap:wrap}
.eyebrow-brand .sep{color:var(--muted)}
.brand-inline{display:inline-flex;align-items:center}
.brand-inline .logo{height:22px;min-width:0;max-width:140px;opacity:1;filter:none}
.brand-inline .logo img{max-width:140px}

footer{padding:36px 0 44px;border-top:1px solid var(--line);font:400 13px/1.5 var(--mono);color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px}
.foot-legal{flex-basis:100%;justify-content:flex-start!important;font-size:12.5px;opacity:.85}
.foot-legal a{color:var(--muted)!important}
footer nav{display:flex;gap:18px}footer nav a{text-decoration:none;color:var(--ink-2)}footer nav a:hover{color:var(--blue)}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ============ ARTICLE PAGES ============ */
.article-hero{padding:72px 0 40px}
.article-hero .wrap{max-width:820px}
.article-hero h1{font-size:clamp(34px,5.4vw,64px);line-height:1.02;letter-spacing:-.035em;margin-bottom:22px}
.article-meta{display:flex;flex-wrap:wrap;gap:12px 16px;align-items:center;color:var(--muted);font:400 13px/1.4 var(--mono)}
.author{display:flex;align-items:center;gap:10px;color:var(--ink-2);text-decoration:none}
.author img{width:36px;height:36px;border-radius:50%;object-fit:cover;object-position:50% 20%;border:1px solid var(--line-strong)}
.summary-box{max-width:820px;margin:0 auto 24px;padding:26px 28px;border-radius:var(--r);background:var(--blue-soft);border:1px solid #d4e2fd}
.summary-box h2{font:700 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--blue);margin-bottom:12px}
.summary-box ul{margin:0;padding-left:20px;color:var(--ink-2)}
.summary-box li{margin:6px 0}
.origin{max-width:820px;margin:0 auto 40px;display:flex;gap:18px;align-items:flex-start;padding:22px 26px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.origin-ico{flex:0 0 auto;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:#0a66c2;color:#fff}
.origin strong{display:block;margin-bottom:4px}
.origin p{color:var(--muted);font-size:15px;margin:0 0 12px}
.origin-links{display:flex;flex-wrap:wrap;gap:8px}
.article{padding:0 0 80px}
.article .wrap{max-width:720px}
.article .lead{font-size:clamp(19px,2.2vw,23px);line-height:1.5;color:var(--ink);margin-bottom:28px}
.article h2{font-size:clamp(26px,3.2vw,36px);margin:52px 0 18px}
.article h3{font-size:21px;margin:34px 0 12px}
.article p,.article li{color:var(--ink-2);font-size:17.5px;line-height:1.7}
.article ul,.article ol{padding-left:24px}
.article li{margin:8px 0}
.article a{color:var(--blue);text-decoration-color:rgba(29,78,216,.35)}
.article blockquote{margin:32px 0;padding:22px 28px;border-left:3px solid var(--sky);background:var(--blue-soft);border-radius:0 14px 14px 0;font:italic 300 clamp(20px,2.4vw,26px)/1.35 var(--serif)}
.article blockquote p{font:inherit;color:var(--ink);margin:0}
.article table{width:100%;border-collapse:collapse;margin:28px 0;font-size:15.5px;display:block;overflow-x:auto}
.article th,.article td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
.article th{color:var(--ink);font-weight:600;background:var(--surface-2)}
.article hr{border:0;border-top:1px solid var(--line);margin:48px 0}
.share{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:48px 0 0;padding-top:28px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.author-box{display:flex;gap:20px;align-items:center;margin-top:40px;padding:26px;border-radius:var(--r);border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow)}
.author-box img{width:72px;height:72px;border-radius:50%;object-fit:cover;object-position:50% 20%;flex:0 0 auto;border:2px solid var(--line-strong)}
.author-box strong{display:block;margin-bottom:4px}
.author-box p{margin:0;color:var(--muted);font-size:15px}
.author-box a{color:var(--blue)}
.related{padding:0 0 96px}
.related .section-head{margin-bottom:28px}
.blog-index{padding:64px 0 96px}
.blog-index .section-head{margin-bottom:40px}

/* ============ BLOG: buscador y categorías ============ */
.blog-tools{display:flex;flex-direction:column;gap:18px;margin:-12px 0 28px}
.search{display:flex;align-items:center;gap:12px;padding:0 16px 0 18px;height:58px;border-radius:999px;background:var(--surface);border:1px solid var(--line-strong);box-shadow:var(--shadow);color:var(--muted);transition:border-color .2s,box-shadow .2s}
.search:focus-within{border-color:var(--sky);box-shadow:0 0 0 4px rgba(59,130,246,.15),var(--shadow)}
.search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font:500 17px/1 var(--sans);color:var(--ink)}
.search input::placeholder{color:var(--muted)}
.search input::-webkit-search-cancel-button{-webkit-appearance:none;appearance:none;width:14px;height:14px;background:var(--muted);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M6 6l12 12M18 6 6 18'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M6 6l12 12M18 6 6 18'/%3E%3C/svg%3E") center/contain no-repeat;cursor:pointer}
.search kbd{font:600 12px/1 var(--sans);color:var(--muted);border:1px solid var(--line-strong);border-radius:6px;padding:5px 8px;background:var(--surface-2)}
@media (max-width:600px){.search kbd{display:none}}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:9px 14px 9px 16px;border-radius:999px;border:1px solid var(--line-strong);background:var(--surface);color:var(--ink-2);font-weight:600;font-size:14px;text-decoration:none;transition:border-color .2s,background .2s,color .2s,transform .2s}
.chip span{font:700 11px/1.4 var(--mono);padding:2px 8px;border-radius:999px;background:var(--surface-2);color:var(--muted)}
.chip:hover{border-color:var(--sky);transform:translateY(-1px)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.chip.is-active span{background:rgba(255,255,255,.18);color:#fff}
.results-info{margin:-8px 0 16px;font-size:14px;color:var(--muted);min-height:1.2em}
.results-info:empty{display:none}
.post mark{background:rgba(59,130,246,.18);color:inherit;border-radius:3px;padding:0 2px}
.empty{padding:48px 24px;text-align:center;border:1px dashed var(--line-strong);border-radius:var(--r);color:var(--muted)}
.empty strong{color:var(--ink)}
.empty a{color:var(--blue)}

.post-cat--pillar{background:var(--ink);color:#fff}

/* aviso de cookies */
.consent{position:fixed;left:16px;right:16px;bottom:16px;z-index:60;max-width:560px;margin:0 auto;padding:18px 20px;border-radius:16px;background:var(--surface);border:1px solid var(--line-strong);box-shadow:var(--shadow-lg);font-size:14.5px}
.consent p{margin:0 0 12px;color:var(--ink-2)}
.consent a{color:var(--blue)}
.consent-actions{display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap}
.legal h2{font-size:22px;margin:36px 0 12px}

/* ============ Formato guía: respuesta rápida, aprenderás, índice, destacados, figuras ============ */
.quick{max-width:820px;margin:0 auto 18px;padding:22px 26px;border-left:4px solid var(--blue);border-radius:0 var(--r) var(--r) 0;background:var(--blue-soft)}
.quick-label{margin:0 0 6px;font:700 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--blue)}
.quick p:last-child{margin:0;color:var(--ink);font-size:17px;line-height:1.6}
.learn{max-width:820px;margin:0 auto 18px;padding:26px 28px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.learn-title{margin:0 0 14px;font-size:20px;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
.learn ul{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.learn li{display:grid;gap:2px;padding-left:22px;position:relative;font-size:15.5px;line-height:1.5}
.learn li::before{content:"";position:absolute;left:4px;top:10px;width:7px;height:7px;border-radius:50%;background:var(--blue)}
.learn li strong{color:var(--ink)}
.learn li span{color:var(--muted)}
.learn-outcome{margin:18px 0 0;padding:14px 16px;border-radius:12px;background:var(--blue-soft);color:var(--ink-2);font-size:15.5px}
.learn-outcome strong{color:var(--blue)}
.learn-meta{margin:14px 0 0;font:400 13px/1.6 var(--mono);color:var(--muted)}
.learn-meta b{color:var(--ink-2);font-weight:700}
.learn-meta i{font-style:normal;margin:0 6px;color:var(--line-strong)}
.toc{max-width:820px;margin:0 auto 40px;padding:22px 26px;border-radius:var(--r);background:var(--surface-2);border:1px solid var(--line)}
.toc-title{margin:0 0 10px;display:inline-block;padding:5px 12px;border-radius:999px;background:var(--ink);color:#fff;font:700 12px/1.4 var(--mono);letter-spacing:.06em;text-transform:uppercase}
.toc ol{margin:0;padding-left:22px;columns:1}
.toc li{margin:6px 0;font-size:15.5px}
.toc a{color:var(--ink-2);text-decoration:none;border-bottom:1px solid var(--line-strong)}
.toc a:hover{color:var(--blue);border-color:var(--blue)}
.article .callout{margin:28px 0;padding:18px 22px;border-left:4px solid var(--blue);border-radius:0 14px 14px 0;background:var(--blue-soft);color:var(--ink);font-size:17px}
.article .callout strong{font-size:24px;font-weight:800;letter-spacing:-.02em;color:var(--blue);margin-right:6px}
.article .note{margin:24px 0;padding:16px 20px;border-radius:14px;background:#fff7ed;border:1px solid #fed7aa;color:#7c2d12;font-size:16px}
.article .note strong{color:#c2410c}
.article figure{margin:36px 0}
.article figure img{width:100%;height:auto;border-radius:16px;border:1px solid var(--line);box-shadow:var(--shadow);background:#fff}
.article figure.portrait img{max-width:420px;margin:0 auto;display:block}
.article figcaption{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.5;text-align:center}
.article h2{scroll-margin-top:90px}