*{box-sizing:border-box}body{margin:0;background:#05060d;color:#e6e9f5;font:17px/1.65 "Inter",system-ui,sans-serif}
a{color:#5ef0ff}header{position:sticky;top:0;z-index:9;background:rgba(5,6,13,.85);backdrop-filter:blur(10px);border-bottom:1px solid #1b2040}
.bar{max-width:1200px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:14px 20px}
.logo{font:800 28px/1 "Orbitron",sans-serif;letter-spacing:.12em;text-transform:uppercase;text-decoration:none;background:linear-gradient(90deg,#5ef0ff,#b46bff,#ff4fd8);-webkit-background-clip:text;color:transparent}
.tag{font-size:12px;color:#8a91b8;letter-spacing:.2em;text-transform:uppercase;display:block;margin-top:4px}
.xl{border:1px solid #5ef0ff55;padding:8px 14px;border-radius:999px;text-decoration:none;font-size:14px}.xl:hover{background:#5ef0ff22}
main{max-width:1200px;margin:auto;padding:28px 20px 60px}h1.sec{font:700 14px "Orbitron";letter-spacing:.3em;color:#b46bff;text-transform:uppercase}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:24px}
.card{background:linear-gradient(160deg,#0d1124,#090b18);border:1px solid #1b2040;border-radius:18px;overflow:hidden;text-decoration:none;color:inherit;transition:.25s}
.card:hover{transform:translateY(-4px);border-color:#5ef0ff88;box-shadow:0 0 30px #5ef0ff22}
.card img{width:100%;aspect-ratio:2/1;object-fit:cover;display:block}.card div{padding:16px 18px 20px}.card h2{font-size:19px;line-height:1.3;margin:6px 0}
.date{font-size:12px;color:#8a91b8;text-transform:uppercase;letter-spacing:.15em}
article{max-width:820px;margin:auto}article h1{font:700 clamp(28px,5vw,44px)/1.15 "Orbitron",sans-serif;margin:10px 0 24px}
article img{width:100%;height:auto;max-height:40vh;aspect-ratio:16/9;object-fit:cover;border-radius:16px;border:1px solid #1b2040;margin:4px 0 18px}
.entrada{font-size:20px;font-weight:600;color:#fff}.cierre{color:#c9d0f0;font-style:italic;border-top:1px solid #1b2040;padding-top:14px}
.src{margin:24px 0;padding:14px 18px;border-left:3px solid #b46bff;background:#0d1124;border-radius:8px}
.share{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.share a,.share button{font:inherit;font-size:14px;cursor:pointer;color:#e6e9f5;background:#141a36;border:1px solid #2a3166;padding:9px 16px;border-radius:999px;text-decoration:none}
.share a:hover,.share button:hover{border-color:#5ef0ff}.card h2{font-size:20px}.baj{color:#b9c0e0;font-size:15.5px;line-height:1.5;margin:6px 0 0}
article{max-width:720px}article p{font-size:19px;line-height:1.75;color:#eef1fb}.lead{font-size:21px!important;color:#c9d0f0!important;margin:-8px 0 24px}
article h1{font-size:clamp(28px,4.5vw,40px)!important}.datos{background:#0d1124;border:1px solid #1b2040;border-radius:14px;padding:6px 24px 14px;margin:24px 0}
.datos h3{font:700 13px "Orbitron";letter-spacing:.25em;color:#5ef0ff;text-transform:uppercase}.datos li{font-size:17.5px;line-height:1.6;margin:8px 0;color:#e6e9f5}
@media(max-width:700px){.grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;padding-bottom:12px;-webkit-overflow-scrolling:touch}.grid .card{flex:0 0 82%;scroll-snap-align:start}.grid .card:hover{transform:none}article img{max-height:32vh}}
@media(max-width:600px){body{font-size:17px}article p{font-size:17.5px}.lead{font-size:19px!important}.logo{font-size:22px}}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#5ef0ff;color:#000;padding:8px;z-index:99}
a:focus-visible,button:focus-visible{outline:2px solid #5ef0ff;outline-offset:2px}
.ad-slot{min-height:120px;margin:28px 0;border:1px dashed #1b2040;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#565d85;font-size:12px}.ad-slot:before{content:'Publicidad'}
.ck{position:fixed;left:12px;right:12px;bottom:12px;max-width:760px;margin:auto;background:#0d1124;border:1px solid #2a3166;border-radius:14px;padding:14px 18px;z-index:50;display:flex;gap:14px;align-items:center;flex-wrap:wrap;box-shadow:0 10px 40px #0008}.ck[hidden]{display:none}.ck p{margin:0;flex:1 1 320px;font-size:14px}.ck button{background:#1b2040;color:#e6e9f5;border:0;border-radius:8px;padding:9px 16px;margin-left:6px;cursor:pointer}.ck #ck-ok{background:#5ef0ff;color:#000;font-weight:600}
.legal{max-width:760px;margin:0 auto}.legal h2{font-size:22px;margin-top:30px}footer nav{margin-bottom:8px}footer nav a{color:#c9cff0}
footer{border-top:1px solid #1b2040;text-align:center;padding:30px;color:#8a91b8;font-size:14px}
/* selector idioma */
.bar{gap:12px}.lang{display:flex;gap:4px;margin-left:auto;margin-right:10px}.lang a{color:#8a91b8;text-decoration:none;font-size:13px;font-weight:600;border:1px solid #1b2040;border-radius:8px;padding:5px 9px}.lang a.on{color:#000;background:#5ef0ff;border-color:#5ef0ff}
@media(max-width:600px){.xl{font-size:0!important;padding:8px 11px!important}.xl::before{content:'𝕏';font-size:16px}.lang{margin-right:4px}}
/* hero destacada */
.hero{display:block;position:relative;border-radius:20px;overflow:hidden;border:1px solid #1b2040;margin:0 0 26px;text-decoration:none;color:#fff}
.hero img{width:100%;aspect-ratio:21/9;max-height:420px;object-fit:cover;display:block}
.hero .hx{position:absolute;left:0;right:0;bottom:0;padding:60px 26px 22px;background:linear-gradient(transparent,#05060dee 55%)}
.hero .mas{display:inline-block;background:#5ef0ff;color:#000;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-radius:6px;padding:3px 9px}
.hero h2{font-size:30px;line-height:1.2;margin:8px 0 6px}.hero p{margin:0;color:#d6dbf2;font-size:16px}
.hero:hover{border-color:#5ef0ff88}
@media(max-width:700px){.hero img{aspect-ratio:16/9;max-height:230px}.hero .hx{position:static;background:#0b0e1f;padding:12px 14px 16px}.hero h2{font-size:20px}.hero p{font-size:14.5px}}
/* tarjetas cortas 16:9 */
.grid{grid-template-columns:repeat(4,minmax(0,1fr))!important;gap:20px}
@media(max-width:1100px){.grid{grid-template-columns:repeat(3,minmax(0,1fr))!important}}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))!important}}
.card{display:flex;flex-direction:column}
.card img{width:100%!important;height:auto!important;aspect-ratio:16/9!important;max-height:180px!important;object-fit:cover!important;display:block}
.card div{padding:12px 14px 16px}.card h2{font-size:17px!important;line-height:1.3;margin:4px 0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card .baj{font-size:14.5px;margin:4px 0 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
article img{max-height:min(34vh,360px)!important}
@media(max-width:700px){.grid{display:flex!important;overflow-x:auto;scroll-snap-type:x mandatory}.grid .card{flex:0 0 80%}.card img{max-height:190px!important}article img{max-height:26vh!important}}
.rel{max-width:1100px;margin:48px auto 0;border-top:1px solid #1b2040;padding-top:24px}.rel h2.rt{font:700 22px/1.2 "Orbitron",sans-serif;margin:0 0 16px}
.rgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.rgrid .card img{max-height:200px!important}
@media(max-width:900px){.rgrid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.rgrid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;padding-bottom:12px}.rgrid .card{flex:0 0 78%;scroll-snap-align:start}}
/* mejoras: menú de temas, buscador, boletín */
.cats{max-width:1200px;margin:auto;display:flex;gap:6px;padding:0 20px 10px;overflow-x:auto;scrollbar-width:none;align-items:center}.cats::-webkit-scrollbar{display:none}
.cats a{flex:0 0 auto;color:#c9cff0;text-decoration:none;font-size:13.5px;font-weight:600;border:1px solid #1b2040;border-radius:999px;padding:5px 12px}.cats a:hover,.cats a.on{border-color:#5ef0ff;color:#5ef0ff}
.cats a.srch{margin-left:auto;font-size:15px;padding:4px 11px}
.cat{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#05060d;background:#b46bff;border-radius:5px;padding:2px 7px;margin-right:8px;vertical-align:1px;text-decoration:none}
.cat.espacio{background:#5ef0ff}.cat.biologia{background:#7dffa8}.cat.tecnologia{background:#ff9f5e}.cat.fisica{background:#ff4fd8}
.nl{max-width:720px;margin:36px auto;background:linear-gradient(160deg,#0d1124,#140f2a);border:1px solid #2a3166;border-radius:16px;padding:18px 22px;text-align:left}
.nl h3{font:700 16px "Orbitron",sans-serif;margin:0 0 6px;color:#fff}.nl p{margin:0 0 10px;font-size:14.5px;color:#b9c0e0}
.nl form{display:flex;gap:8px;flex-wrap:wrap}.nl input[type=email]{flex:1 1 220px;font:inherit;font-size:15px;background:#05060d;color:#fff;border:1px solid #2a3166;border-radius:10px;padding:10px 12px}
.nl button{font:inherit;font-weight:700;font-size:15px;background:#5ef0ff;color:#000;border:0;border-radius:10px;padding:10px 18px;cursor:pointer}
.nl small{display:block;margin-top:8px;color:#8a91b8;font-size:12.5px}.nl .hp{position:absolute;left:-5000px;width:1px;height:1px;overflow:hidden}.nl .msg{margin-top:8px;font-size:14px;color:#7dffa8}
footer .nl{margin:0 auto 22px}
.sbox{display:flex;gap:8px;margin:0 0 22px}.sbox input{flex:1;font:inherit;font-size:17px;background:#0d1124;color:#fff;border:1px solid #2a3166;border-radius:12px;padding:12px 14px}
#sres-n{color:#8a91b8;font-size:14px;margin:0 0 14px}
.tgrid{display:grid!important;grid-template-columns:repeat(4,minmax(0,1fr))!important;gap:20px;overflow:visible!important}
@media(max-width:1100px){.tgrid{grid-template-columns:repeat(3,minmax(0,1fr))!important}}
@media(max-width:900px){.tgrid{grid-template-columns:repeat(2,minmax(0,1fr))!important}}
@media(max-width:700px){.tgrid{grid-template-columns:1fr!important}.tgrid .card{flex:none!important}.cats{padding:0 12px 8px}.cats a.srch{order:-1;margin-left:0}}