:root{color-scheme:light;--tinta:#203849;--azul:#293b78;--verde:#245841;--borde:#d9e0e6;--papel:#f8fafb}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--papel);color:var(--tinta);font-family:system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.55}
a{color:var(--verde)}
a:focus-visible{outline:3px solid #b67d16;outline-offset:5px}
.saltar{position:absolute;left:16px;top:-100px;z-index:2;background:white;padding:10px}.saltar:focus{top:10px}
.barra{max-width:1140px;margin:auto;padding:22px 28px;display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid var(--borde)}
.marca{font-size:1.15rem;font-weight:700;text-decoration:none}.volver{font-size:.95rem;text-underline-offset:4px}
main{max-width:1140px;margin:auto;padding:40px 28px 48px}
.presentacion{max-width:800px;margin-bottom:36px}.antetitulo{margin:0 0 8px;text-transform:uppercase;letter-spacing:.13em;font-size:.78rem;font-weight:700;color:var(--azul)}
h1{font-family:Georgia,serif;font-weight:400;font-size:clamp(2.1rem,5vw,3.3rem);line-height:1.12;color:var(--azul);margin:0 0 18px}
.introduccion{font-size:1.08rem;max-width:720px;margin:0;color:#4a5d68}
.contenido{display:grid;grid-template-columns:290px 1fr;gap:38px;align-items:start}
.publicacion{margin:0;padding:25px 22px;background:#eaf0f5;border-radius:12px;text-align:center}
.publicacion img{display:block;width:240px;max-width:100%;height:auto;margin:auto;box-shadow:0 10px 24px #19334724}
figcaption{font-family:Georgia,serif;font-size:.95rem;margin-top:20px;color:#40566b}
h2{font-size:1.45rem;margin:0 0 4px}.indicacion{margin:0 0 22px;color:#52636e}
.opciones{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.opcion{display:flex;align-items:flex-start;gap:15px;padding:20px 16px;border:1px solid var(--borde);border-radius:10px;background:white;text-decoration:none;color:var(--tinta);transition:border-color .15s,box-shadow .15s}
.opcion:hover{border-color:#8197ad;box-shadow:0 4px 15px #243b5010}
.opcion img{flex:none;width:80px;height:64px;object-fit:contain;background:#f3f6f7;border-radius:5px}
h3{font-size:1.12rem;margin:0 0 5px;color:var(--azul)}
.opcion p{margin:0 0 12px;font-size:.88rem;color:#52636e}.accion{font-size:.83rem;font-weight:650;color:var(--verde)}
.opcion-buscar{border-color:#a9c2b5;background:#f5faf6}
.transicion{margin-top:22px;border-left:3px solid #a9b7ca;padding:2px 0 2px 16px;font-size:.86rem;color:#52636e}.transicion strong{color:#344d63}.transicion p{margin:5px 0}
footer{max-width:1140px;margin:0 auto;padding:22px 28px 30px;border-top:1px solid var(--borde);display:flex;justify-content:space-between;gap:16px;font-size:.84rem;color:#52636e}footer a{text-underline-offset:3px}
@media(max-width:1000px){.contenido{grid-template-columns:250px 1fr;gap:24px}.opciones{grid-template-columns:1fr}.opcion{padding:15px}.opcion p{margin-bottom:6px}}
@media(max-width:640px){.barra{padding:17px 20px;gap:12px;flex-wrap:wrap}main{padding:28px 20px 36px}.presentacion{margin-bottom:26px}.contenido{grid-template-columns:1fr;gap:28px}.publicacion{max-width:290px;width:100%;justify-self:center}.publicacion img{max-width:190px}.consultas{min-width:0}.opcion{gap:16px}.opcion img{width:80px}footer{padding:20px;flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.opcion{transition:none}}

/* La portada pasa a ser el fondo fijo de esta página. */
body{min-height:100vh;isolation:isolate}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(rgba(248,250,251,.78),rgba(248,250,251,.88)),url("../img/cono-sur/portada-catalogo.jpg") center center / cover no-repeat}
.contenido{display:block}
.consultas{max-width:756px;margin-inline:auto}

.portada-menu{display:grid;grid-template-columns:clamp(108px,14.4vw,162px) minmax(0,1fr);align-items:stretch;gap:24px;max-width:none}.miniatura-portada{position:relative;min-height:168px}.miniatura-portada img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:left center;filter:none;opacity:1}.portada-menu .antetitulo{font-size:.9rem}.portada-menu .introduccion{font-size:.82rem;line-height:1.65}.texto-portada{align-self:center}@media(max-width:640px){.portada-menu{grid-template-columns:98.4px minmax(0,1fr);gap:14px}.portada-menu h1{font-size:1.85rem}.portada-menu .antetitulo{font-size:.86rem;letter-spacing:.06em}.portada-menu .introduccion{font-size:.8rem}}