:root{
  --azul:#0a5bb8;--azul-osc:#073e7e;--azul-claro:#e8f1fb;--teal:#0fb6b1;
  --texto:#1c2b3a;--gris:#5b6b7c;--gris-claro:#f4f7fb;--verde-wa:#25d366;
  --borde:#e2e9f2;--radio:16px;--sombra:0 10px 30px rgba(10,91,184,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;color:var(--texto);line-height:1.7;background:#fff}
h1,h2,h3{line-height:1.25;letter-spacing:-.02em;color:var(--azul-osc)}
a{text-decoration:none;color:var(--azul)}
img{max-width:100%;display:block}
.contenedor{max-width:1140px;margin:0 auto;padding:0 20px}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;padding:14px 26px;border-radius:50px;border:none;cursor:pointer;font-size:1rem;transition:.2s}
.btn-wa{background:var(--verde-wa);color:#fff;box-shadow:0 8px 20px rgba(37,211,102,.35)}
.btn-wa:hover{transform:translateY(-2px)}

/* HEADER */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--borde)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:1140px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem;color:var(--azul-osc)}
.logo span.cruz{background:var(--azul);color:#fff;width:32px;height:32px;border-radius:9px;display:grid;place-items:center;font-size:1.1rem}
.nav-links{display:flex;gap:22px;align-items:center;font-weight:500;font-size:.95rem}
.nav-links a.menu{color:var(--gris)}
.nav-links a.menu:hover{color:var(--azul)}
.nav .btn{padding:9px 18px;font-size:.88rem}

/* ARTICLE */
.art-hero{background:linear-gradient(160deg,#f4f9ff 0%,#e8f1fb 100%);padding:44px 0}
.breadcrumb{font-size:.85rem;color:var(--gris);margin-bottom:14px}
.breadcrumb a{color:var(--gris)}
.breadcrumb a:hover{color:var(--azul)}
.art-cat{display:inline-block;background:var(--azul-claro);color:var(--azul);font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.03em;padding:5px 13px;border-radius:50px;margin-bottom:14px}
.art-hero h1{font-size:2.3rem;font-weight:800;max-width:820px}
.art-meta{margin-top:14px;font-size:.88rem;color:var(--gris)}
.art-wrap{max-width:760px;margin:0 auto;padding:44px 20px 20px}
.art-img{border-radius:var(--radio);box-shadow:var(--sombra);margin:0 auto 30px;width:100%;max-height:420px;object-fit:cover}
.art-body p{margin-bottom:18px;font-size:1.06rem;color:#33414f}
.art-body h2{font-size:1.55rem;margin:34px 0 14px}
.art-body h3{font-size:1.2rem;margin:24px 0 10px;color:var(--azul)}
.art-body ul,.art-body ol{margin:0 0 18px 22px}
.art-body li{margin-bottom:8px;font-size:1.05rem;color:#33414f}
.art-body strong{color:var(--azul-osc)}
.art-body blockquote{border-left:4px solid var(--teal);background:var(--gris-claro);padding:14px 20px;border-radius:0 10px 10px 0;margin:20px 0;color:var(--gris);font-style:italic}
.aviso{background:#fff8e6;border:1px solid #f0c94a;border-radius:12px;padding:14px 18px;font-size:.92rem;color:#7a5c00;margin:24px 0}

/* CTA */
.art-cta{background:linear-gradient(160deg,var(--azul) 0%,var(--azul-osc) 100%);color:#fff;border-radius:20px;padding:34px;text-align:center;margin:40px 0}
.art-cta h3{color:#fff;font-size:1.4rem;margin-bottom:10px}
.art-cta p{opacity:.92;margin-bottom:20px}

/* RELACIONADOS */
.relac{background:var(--gris-claro);padding:48px 0}
.relac h2{text-align:center;font-size:1.6rem;margin-bottom:28px}
.grid-blog{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:1140px;margin:0 auto;padding:0 20px}
.post{background:#fff;border:1px solid var(--borde);border-radius:var(--radio);overflow:hidden;transition:.2s}
.post:hover{transform:translateY(-4px);box-shadow:var(--sombra)}
.post img{aspect-ratio:16/9;object-fit:cover;width:100%}
.post .cuerpo{padding:18px}
.post .cat{font-size:.74rem;color:var(--teal);font-weight:700;text-transform:uppercase}
.post h3{font-size:1rem;margin:8px 0}
.post a.leer{font-weight:600;font-size:.9rem}

/* BLOG INDEX */
.blog-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:44px 0}
.blog-list .post img{aspect-ratio:16/9}

/* FOOTER */
footer{background:#0b1c2c;color:#c7d3df;padding:48px 0 26px;font-size:.92rem;margin-top:10px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;margin-bottom:30px;max-width:1140px;margin-left:auto;margin-right:auto;padding:0 20px}
footer h4{color:#fff;margin-bottom:14px;font-size:1rem}
footer a{color:#c7d3df}
footer a:hover{color:#fff}
footer .foot-links li{list-style:none;padding:4px 0}
.foot-bottom{border-top:1px solid #1e3145;padding-top:20px;text-align:center;font-size:.82rem;color:#8496a8}

.wa-float{position:fixed;bottom:22px;right:22px;background:var(--verde-wa);color:#fff;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;box-shadow:0 8px 24px rgba(37,211,102,.5);z-index:60;font-size:1.6rem}

@media(max-width:900px){
  .grid-blog,.blog-list{grid-template-columns:1fr}
  .art-hero h1{font-size:1.8rem}
  .foot-grid{grid-template-columns:1fr}
  .nav-links{display:none}
}