/* PROYECTOS | PREDESA. Estilos exclusivos de esta sección. */
.encabezado{border-bottom:1px solid #e5e5e5}
.navegacion a[aria-current="page"]{color:var(--azul)}
.pr-intro{padding:36px 0 42px;background:#fff;color:#263846}
.pr-intro h1{margin:0 0 20px;font-size:34px;line-height:1.3;font-weight:400;letter-spacing:.025em;text-align:center;color:#4b5d6c}
.pr-intro p{margin:0 0 8px;font-size:15px;line-height:1.8;text-align:justify}
.pr-intro strong{color:#8592a5}
.pr-indice{display:flex;justify-content:center;flex-wrap:wrap;align-items:center;gap:6px;margin-top:22px;color:#8390a2;font-size:13px;text-align:center}
.pr-indice a:hover{text-decoration:underline;color:#162836}
.pr-seccion{padding:58px 0 72px;scroll-margin-top:15px}
.pr-seccion h2{margin:0 0 38px;font-size:30px;font-weight:400;line-height:1.35;text-align:center}
.pr-claro{background:#fff;color:#263846}
.pr-oscuro{position:relative;isolation:isolate;color:#fff;background:#253c4b url("../img/RTG-Guay.jpg") center center/cover fixed no-repeat}
.pr-oscuro::before{content:"";position:absolute;inset:0;z-index:-1;background:rgba(22,40,54,.82)}
@media(max-width:650px){.pr-oscuro{background-attachment:scroll}}
.pr-tarjetas{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:42px;align-items:start}
.pr-tarjeta{min-width:0;text-align:center}
.pr-tarjeta img{width:100%;height:210px;object-fit:cover;border-radius:3px}
.pr-tarjeta h3{margin:11px 0 15px;font-size:17px;font-weight:500;line-height:1.4}
.pr-tarjeta p{margin:0 auto 18px;max-width:300px;font-size:14px;line-height:1.65}
.pr-tarjeta ul{margin:0;padding-left:18px;text-align:left;font-size:13px;line-height:1.9}
.pr-tarjeta li{margin-bottom:3px}
#estudios .pr-tarjetas,#modelos .pr-tarjetas{grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.pr-tarjeta p+p{margin-top:-9px}
.pr-tarjeta h3{font-size:15px}
.pr-tarjeta p{font-size:13px;text-align:left}
#estudios .pr-tarjeta p{text-align:center}
@media(max-width:950px){#estudios .pr-tarjetas,#modelos .pr-tarjetas{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:800px){.pr-tarjetas{gap:22px}.pr-tarjeta img{height:165px}.pr-tarjeta h3{font-size:15px}}
@media(max-width:650px){.pr-intro{padding:34px 0 38px}.pr-intro h1{font-size:28px}.pr-intro p{font-size:14px;text-align:left}.pr-indice{font-size:12px}.pr-seccion{padding:48px 0 54px}.pr-seccion h2{font-size:26px;margin-bottom:27px}.pr-tarjetas,#estudios .pr-tarjetas,#modelos .pr-tarjetas{grid-template-columns:1fr;gap:40px;max-width:420px;margin:auto}.pr-tarjeta img{height:auto;aspect-ratio:4/3}.pr-tarjeta ul{max-width:300px;margin:auto}}