.post-blog {
  max-width: 820px;
  margin: 0 auto;
  padding: 4rem 1.5rem 5rem;
  color: #1f1f1f;
}

.post-header {
  margin-bottom: 2.5rem;
}

.post-categoria {
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #7a7a7a;
  margin-bottom: 1rem;
}

.post-header h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  line-height: 1.1;
  font-weight: 500;
  margin-bottom: 1rem;
  color: #111111;
}

.post-intro {
  font-size: 1.2rem;
  line-height: 1.7;
  color: #5f5f5f;
  max-width: 700px;
}

.post-contenido {
  font-size: 1.08rem;
  line-height: 1.95;
  color: #2d2d2d;
}

.post-contenido p {
  margin-bottom: 1.5rem;
}

.post-contenido h2 {
  font-size: 1.7rem;
  line-height: 1.3;
  font-weight: 500;
  margin-top: 3rem;
  margin-bottom: 1rem;
  color: #111111;
}

.post-contenido ul {
  margin: 0 0 1.8rem 1.4rem;
  padding: 0;
}

.post-contenido li {
  margin-bottom: 0.7rem;
  color: #333333;
}

.post-contenido strong {
  color: #111111;
  font-weight: 600;
}

.post-contenido blockquote {
  margin: 3rem 0 0;
  padding: 1.5rem 1.8rem;
  border-left: 3px solid #111111;
  background: #f7f7f7;
  font-size: 1.2rem;
  line-height: 1.8;
  color: #222222;
}

@media (max-width: 768px) {
  .post-blog {
    padding: 3rem 1.2rem 4rem;
  }

  .post-header h1 {
    font-size: 2.2rem;
  }

  .post-intro {
    font-size: 1.05rem;
    line-height: 1.6;
  }

  .post-contenido {
    font-size: 1rem;
    line-height: 1.85;
  }

  .post-contenido h2 {
    font-size: 1.4rem;
    margin-top: 2.3rem;
  }

  .post-contenido blockquote {
    padding: 1.2rem 1.2rem;
    font-size: 1.05rem;
  }
}

.topbar {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #eee;
  z-index: 100;
}

.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.5rem;

  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 600;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: #111;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav a {
  text-decoration: none;
  color: #333;
  font-size: 0.95rem;
  transition: 0.3s;
}

.nav a:hover {
  color: #000;
}

.btn-nav {
  padding: 0.5rem 1rem;
  border: 1px solid #111;
  border-radius: 999px;
  font-size: 0.85rem;
  transition: 0.3s;
}

.btn-nav:hover {
  background: #c0c0c0;
  color: #fff;

}