/* Nina Costa 4.0 — mejoras visuales accesibles; CSP sin JavaScript inline */
.skip-to-content{position:absolute;left:1rem;top:-6rem;background:#fff;color:#161219;z-index:9999;padding:.7rem 1rem;border-radius:.5rem}.skip-to-content:focus{top:1rem}
.hero .hero-text{max-width:780px}.hero h1{letter-spacing:-.045em}.hero h1 span{letter-spacing:-.03em}.hero-description{max-width:54ch;line-height:1.75}
.hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.secondary-action{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:10px 18px;border:1px solid #9b8874;border-radius:6px;text-decoration:none;color:var(--ink)}.secondary-action:hover{border-color:var(--accent);background:#231a14;color:#fff}
.research-overview{max-width:1160px;margin:32px auto 44px;padding:0 22px}.research-overview-intro{padding:12px 0 22px}.research-overview-intro h2{font-size:clamp(1.5rem,3vw,2.4rem);line-height:1.17;max-width:680px;margin:9px 0}.research-overview-intro>p:last-child{max-width:66ch;color:var(--muted)}.research-tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}.research-tile{min-width:0;display:flex;flex-direction:column;gap:12px;padding:22px 19px;min-height:218px;border-radius:14px;border:1px solid #45362e;background:linear-gradient(145deg,#201922,#111116);color:var(--ink);text-decoration:none;transition:transform .18s,border-color .18s,background .18s}.research-tile:hover,.research-tile:focus-visible{transform:translateY(-2px);border-color:var(--accent);color:var(--ink)}.research-tile strong{font-size:1.2rem;line-height:1.2}.research-tile>span:nth-of-type(2){color:#bcb4ad;font-size:.91rem;line-height:1.5}.research-tile em{margin-top:auto;color:#ffc182;font-size:.88rem;font-style:normal}.tile-index{color:#f9a94f;font:700 .69rem/1.3 var(--mono);letter-spacing:.07em}
.research-directory{max-width:1100px;margin:38px auto;padding:28px 24px;border:1px solid #473d33;border-radius:16px;background:#17151a}.research-directory h2{font-size:clamp(1.3rem,2.4vw,1.8rem);margin:0 0 .6rem}.research-directory p{color:var(--muted)}.research-directory-links{display:flex;flex-wrap:wrap;gap:10px}.research-directory-links a{display:inline-flex;align-items:center;min-height:42px;padding:9px 13px;border:1px solid #57473c;border-radius:8px;text-decoration:none;color:var(--ink);background:#252027}.research-directory-links a:hover{border-color:var(--accent);color:#fff}
.navigation .nav-links a{white-space:nowrap}.navigation{position:relative;z-index:20}
@media(max-width:1080px){.research-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.navigation .nav-links{overflow-x:auto;scrollbar-width:thin;max-width:100%;padding-bottom:5px}}
@media(max-width:600px){.research-overview{padding:0 16px}.research-tiles{grid-template-columns:1fr}.research-tile{min-height:155px;padding:18px}.research-directory{margin:25px 16px;padding:20px}.hero-actions>a{width:100%;justify-content:center}.navigation .nav-links{max-width:calc(100vw - 32px)}.research-overview-intro h2{font-size:1.65rem}}
@media(prefers-reduced-motion:reduce){.research-tile{transition:none}.research-tile:hover{transform:none}}