/* ─── BLOG DE KROND — hoja compartida por el índice y los artículos ─── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:#000;color:#fff;
  font-family:'Space Grotesk',system-ui,sans-serif;
  line-height:1.6;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
:root{
  --cyan:#00E5D9;
  --cyan-10:rgba(0,229,217,.10);
  --cyan-20:rgba(0,229,217,.20);
  --cyan-glow:rgba(0,229,217,.35);
  --glass:rgba(255,255,255,.032);
  --glass-b:rgba(255,255,255,.07);
  --glass-h:rgba(255,255,255,.055);
  --g900:#0c0c0c;--g800:#141414;--g700:#252525;
  --g500:#4a4a4a;--g400:#7a7a7a;--g300:#a0a0a0;--g200:#cecece;
}

/* Fondo ambiental */
.bg-glow{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(900px 600px at 78% -8%,rgba(0,229,217,.09),transparent 60%),
    radial-gradient(700px 500px at 8% 18%,rgba(0,229,217,.05),transparent 60%);
}
.bg-grid{
  position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000,transparent 80%);
  mask-image:radial-gradient(circle at 50% 20%,#000,transparent 80%);
}

/* Nav */
nav{
  position:fixed;inset:0 0 auto 0;z-index:500;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.1rem 2.5rem;
  background:rgba(0,0,0,.7);
  backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav-brand{
  display:flex;align-items:center;gap:.55rem;
  font-size:1.15rem;font-weight:700;letter-spacing:.04em;
  text-decoration:none;color:#fff;
}
.nav-back{
  display:inline-flex;align-items:center;gap:.5rem;
  color:var(--g300);font-size:.85rem;font-weight:600;
  text-decoration:none;transition:color .2s;
}
.nav-back:hover{color:var(--cyan)}
.nav-back .arr{transition:transform .2s}
.nav-back:hover .arr{transform:translateX(-3px)}

.label{
  display:inline-block;font-size:.7rem;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:1rem;
}

/* ─── ÍNDICE ─── */
.blog-hero{padding:9rem 2rem 2.5rem;text-align:center;position:relative;z-index:2}
.blog-hero h1{font-size:clamp(2.2rem,6vw,3.6rem);line-height:1.05;letter-spacing:-.03em;margin-bottom:1rem}
.blog-hero p{color:var(--g300);max-width:600px;margin:0 auto;font-size:1.05rem;line-height:1.7}

.post-list{
  max-width:840px;margin:0 auto;padding:2rem 2rem 5rem;
  position:relative;z-index:2;display:grid;gap:1.2rem;
}
.post-card{
  display:block;text-decoration:none;color:inherit;padding:1.9rem 1.8rem;
  background:var(--glass);
  backdrop-filter:blur(28px);-webkit-backdrop-filter:blur(28px);
  border:1px solid var(--glass-b);border-radius:18px;
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.post-card:hover{
  border-color:var(--cyan-20);transform:translateY(-3px);
  box-shadow:0 0 40px rgba(0,229,217,.06);
}
.post-meta{
  display:flex;align-items:center;gap:.7rem;flex-wrap:wrap;
  font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--g500);margin-bottom:.8rem;
}
.post-meta .cat{color:var(--cyan)}
.post-card h2{font-size:clamp(1.15rem,2.6vw,1.5rem);line-height:1.25;margin-bottom:.6rem;letter-spacing:-.02em}
.post-card p{color:var(--g400);font-size:.94rem;line-height:1.7}
.post-card .more{
  display:inline-flex;align-items:center;gap:.4rem;margin-top:1rem;
  color:var(--cyan);font-size:.88rem;font-weight:600;
}
.post-card .more .arr{transition:transform .2s}
.post-card:hover .more .arr{transform:translateX(3px)}

.empty-note{
  max-width:840px;margin:0 auto;padding:0 2rem 5rem;
  color:var(--g500);font-size:.85rem;text-align:center;position:relative;z-index:2;
}

/* ─── ARTÍCULO ─── */
.article-head{
  max-width:760px;margin:0 auto;padding:8.5rem 2rem 1.5rem;
  position:relative;z-index:2;
}
.article-head h1{
  font-size:clamp(2rem,5vw,3.1rem);line-height:1.08;letter-spacing:-.03em;margin-bottom:1.1rem;
}
.article-head .standfirst{
  color:var(--g300);font-size:clamp(1rem,2.2vw,1.18rem);line-height:1.7;
}

article{
  max-width:760px;margin:0 auto;padding:1.5rem 2rem 3rem;
  position:relative;z-index:2;
}
article h2{
  font-size:clamp(1.35rem,3.2vw,1.8rem);line-height:1.2;letter-spacing:-.02em;
  margin:3rem 0 1rem;
}
article h3{font-size:1.12rem;margin:2.2rem 0 .7rem}
article p{color:var(--g200);font-size:1.03rem;line-height:1.85;margin-bottom:1.3rem}
article ul,article ol{color:var(--g200);margin:0 0 1.4rem 1.2rem;line-height:1.85}
article li{margin-bottom:.55rem;padding-left:.3rem}
article li::marker{color:var(--cyan)}
article strong{color:#fff;font-weight:600}
article a{color:var(--cyan);text-decoration:none;border-bottom:1px solid var(--cyan-20)}
article a:hover{border-bottom-color:var(--cyan)}
article hr{border:none;border-top:1px solid var(--glass-b);margin:3rem 0}

blockquote{
  border-left:2px solid var(--cyan);padding:.3rem 0 .3rem 1.4rem;margin:2rem 0;
  color:#fff;font-size:1.12rem;line-height:1.65;font-weight:500;
}

.callout{
  background:var(--glass);border:1px solid var(--glass-b);border-radius:14px;
  padding:1.5rem 1.6rem;margin:2rem 0;
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
}
.callout p:last-child{margin-bottom:0}
.callout .k{
  display:block;font-size:.7rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--cyan);margin-bottom:.6rem;
}

/* Comparativa antes/después */
.ba{display:grid;grid-template-columns:1fr auto 1fr;gap:1.2rem;align-items:center;margin:2.2rem 0}
.ba-box{
  background:var(--glass);border:1px solid var(--glass-b);border-radius:14px;
  padding:1.4rem;text-align:center;
}
.ba-box .n{font-size:1.9rem;font-weight:700;letter-spacing:-.03em;line-height:1.1}
.ba-box .l{font-size:.78rem;color:var(--g500);margin-top:.35rem;letter-spacing:.05em}
.ba-box.antes .n{color:var(--g400)}
.ba-box.despues .n{color:var(--cyan);text-shadow:0 0 24px rgba(0,229,217,.4)}
.ba-arrow{color:var(--cyan);font-size:1.3rem}

/* CTA final del artículo */
.article-cta{
  max-width:760px;margin:1rem auto 0;padding:0 2rem 5rem;
  position:relative;z-index:2;
}
.article-cta .box{
  background:var(--glass);border:1px solid var(--glass-b);border-radius:18px;
  padding:2.5rem 2rem;text-align:center;
  backdrop-filter:blur(28px);-webkit-backdrop-filter:blur(28px);
}
.article-cta h3{font-size:1.4rem;margin-bottom:.8rem;line-height:1.25}
.article-cta p{color:var(--g400);margin-bottom:1.6rem;font-size:.96rem}
.btn-primary{
  display:inline-flex;align-items:center;gap:.6rem;
  background:var(--cyan);color:#000;border:none;
  padding:.9rem 1.8rem;border-radius:9px;
  font-family:inherit;font-size:.94rem;font-weight:700;
  cursor:pointer;text-decoration:none;transition:all .22s;
}
.btn-primary:hover{background:#fff;box-shadow:0 0 48px var(--cyan-glow);transform:translateY(-2px)}

footer{
  border-top:1px solid var(--glass-b);padding:2.5rem 2rem;
  text-align:center;color:var(--g500);font-size:.82rem;position:relative;z-index:2;
}
footer a{color:var(--g300);text-decoration:none}
footer a:hover{color:var(--cyan)}

@media(max-width:640px){
  nav{padding:1rem 1.3rem}
  .article-head{padding-top:7rem}
  .blog-hero{padding-top:7rem}
  .ba{grid-template-columns:1fr;gap:.7rem}
  .ba-arrow{transform:rotate(90deg)}
}