:root{--blue:#063fb6;--navy:#08264b;--cyan:#0a9ccf;--red:#e1262f;--gray:#eef3f8;--ink:#102236;--muted:#65758b;--white:#fff;--shadow:0 24px 60px rgba(8,38,75,.18);--radius:24px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink);background:#fff;line-height:1.6}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}.container{width:min(1160px,92vw);margin:auto}.site-header{position:fixed;top:0;left:0;right:0;z-index:50;padding:16px 0;transition:.3s}.site-header.scrolled{background:rgba(8,38,75,.94);backdrop-filter:blur(14px);padding:10px 0;box-shadow:0 12px 40px rgba(0,0,0,.22)}.navbar{width:min(1180px,94vw);margin:auto;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;letter-spacing:.02em}.brand img{width:54px;height:54px;border-radius:50%;border:2px solid rgba(255,255,255,.75);object-fit:cover}.nav-links{display:flex;align-items:center;gap:18px;color:#fff;font-weight:700}.nav-links a:not(.btn){opacity:.94}.nav-links a:not(.btn):hover{opacity:1;color:#bfeeff}.nav-toggle{display:none;background:#fff;color:var(--navy);border:0;border-radius:12px;padding:9px 12px;font-size:24px}.lang{border:1px solid rgba(255,255,255,.55);background:rgba(255,255,255,.14);color:#fff;border-radius:999px;padding:7px 10px;font-weight:800;cursor:pointer}.lang.active{background:#fff;color:var(--blue)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;border:0;border-radius:999px;padding:14px 22px;font-weight:800;box-shadow:0 16px 30px rgba(6,63,182,.25);cursor:pointer}.btn:hover{transform:translateY(-2px)}.btn-small{padding:10px 16px}.btn-ghost{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.55);box-shadow:none}.section .btn-ghost,.contact-form .btn-ghost{color:var(--navy);border-color:rgba(8,38,75,.18);background:#fff}.hero{position:relative;min-height:100vh;display:grid;align-items:center;overflow:hidden;color:#fff}.hero-bg{position:absolute;inset:0;background:url('img/portada-etum.jpg') center/cover no-repeat;transform:scale(1.04)}.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(3,20,48,.92),rgba(6,63,182,.72),rgba(4,68,110,.55))}.hero:after{content:"";position:absolute;right:-14vw;top:-20vw;width:58vw;height:58vw;border-radius:50%;background:rgba(255,255,255,.12)}.hero-content{position:relative;z-index:2;width:min(1080px,92vw);margin:auto;padding:135px 0 70px}.hero-logo img{width:128px;height:128px;border-radius:50%;border:6px solid rgba(255,255,255,.86);box-shadow:var(--shadow);object-fit:cover}.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-weight:900;color:#0a9ccf;margin:0 0 10px}.hero .eyebrow{color:#cbeeff}.hero h1{font-family:Montserrat,sans-serif;font-size:clamp(2.55rem,7vw,6.4rem);line-height:.92;margin:10px 0;text-transform:uppercase;letter-spacing:.02em;max-width:980px}.hero h2{font-size:clamp(1.5rem,4vw,3rem);font-weight:500;letter-spacing:.13em;text-transform:uppercase;margin:0 0 22px}.hero-text{font-size:1.22rem;max-width:720px;color:#eaf4ff}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0}.quick-info{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:38px;max-width:900px}.quick-info article{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);border-radius:18px;padding:18px;backdrop-filter:blur(12px)}.quick-info span,.contact-list span{display:block;font-size:.82rem;color:#b7d4ea;text-transform:uppercase;letter-spacing:.1em;font-weight:800}.quick-info strong{font-size:1.08rem}.section{padding:96px 0}.split{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}.section h2{font-family:Montserrat,sans-serif;font-size:clamp(2rem,4vw,3.5rem);line-height:1.05;margin:0 0 20px;color:var(--navy)}.section-heading{text-align:center;max-width:780px;margin:0 auto 46px}.feature-card,.program-card,.video-card,.contact-form,.social-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid rgba(8,38,75,.08)}.feature-card{padding:34px;background:linear-gradient(145deg,#fff,#eef8ff)}.feature-card strong{font-family:Montserrat;font-size:1.55rem;color:var(--blue)}.feature-card a{display:inline-block;margin-top:12px;font-size:1.5rem;color:var(--blue);font-weight:900}.cards.three{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.program-card{padding:30px;position:relative;overflow:hidden}.program-card:before{content:"";position:absolute;inset:0 0 auto;height:6px;background:linear-gradient(90deg,var(--blue),var(--red),var(--cyan))}.program-card .icon{width:58px;height:58px;border-radius:18px;display:grid;place-items:center;background:#eef6ff;color:var(--blue);font-size:28px;margin-bottom:18px}.program-card h3{font-family:Montserrat;font-size:1.55rem;margin:0 0 12px;color:var(--navy)}.program-card ul{padding-left:20px;margin-bottom:0;color:var(--muted)}.section-blue{background:linear-gradient(180deg,#eff7ff,#fff)}.course-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.poster{margin:0;border-radius:22px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}.poster img{width:100%;height:280px;object-fit:cover;cursor:pointer;transition:.35s}.poster:hover img{transform:scale(1.04)}.poster figcaption{padding:16px;font-weight:800;color:var(--navy)}.video-split{align-items:center}.video-card{padding:16px;overflow:hidden;background:linear-gradient(145deg,#fff,#edf6ff)}.video-card iframe{width:100%;aspect-ratio:16/9;height:auto;border-radius:18px}.social-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.social-card{padding:26px;transition:.3s}.social-card:hover{transform:translateY(-5px)}.social-card span{display:block;color:var(--muted);font-weight:800;text-transform:uppercase;letter-spacing:.12em}.social-card strong{font-size:1.25rem;color:var(--blue)}.section-gallery{background:#f7fbff}.gallery-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:16px}.gallery-grid img{width:100%;height:240px;object-fit:cover;border-radius:22px;box-shadow:0 16px 36px rgba(8,38,75,.14);cursor:pointer}.gallery-grid img:first-child{grid-row:span 2;height:496px}.contact{background:linear-gradient(135deg,var(--navy),#0a4fa3);color:#fff}.contact h2{color:#fff}.contact .eyebrow{color:#bfeeff}.contact-list{display:grid;gap:14px;margin-top:26px}.contact-list a{display:block;padding:18px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.1);border-radius:18px}.contact-list strong{color:#fff}.contact-form{padding:28px;color:var(--ink)}.contact-form label{display:block;font-weight:800;margin-bottom:14px}.contact-form span{display:block;margin-bottom:7px}.contact-form input,.contact-form textarea,.contact-form select{width:100%;padding:13px 14px;border:1px solid #d8e2ec;border-radius:14px;font:inherit}.form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}.site-footer{background:#07182e;color:#dbe8f5;padding:44px 0 22px}.footer-grid{display:flex;align-items:center;justify-content:space-between;gap:24px}.footer-grid img{width:76px;height:76px;border-radius:50%;object-fit:cover;margin-bottom:10px}.footer-links{display:flex;gap:18px;flex-wrap:wrap;font-weight:800}.credit{text-align:center;margin:28px 0 0;color:#aebfd1}.credit a{color:#fff;text-decoration:underline}.float-wa{position:fixed;right:18px;bottom:18px;z-index:60;width:62px;height:62px;border-radius:50%;background:#27d366;color:#fff;display:grid;place-items:center;font-weight:900;box-shadow:0 12px 30px rgba(0,0,0,.28)}.lightbox{position:fixed;inset:0;background:rgba(3,10,22,.88);z-index:100;display:none;align-items:center;justify-content:center;padding:28px}.lightbox.open{display:flex}.lightbox img{max-width:min(1100px,92vw);max-height:86vh;border-radius:18px;box-shadow:0 30px 70px rgba(0,0,0,.4)}.lightbox-close{position:absolute;top:22px;right:24px;border:0;background:#fff;color:#07182e;font-size:36px;width:52px;height:52px;border-radius:50%;cursor:pointer}.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}.reveal.visible{opacity:1;transform:none}@media (max-width:900px){.nav-toggle{display:block}.nav-links{position:absolute;top:76px;left:3vw;right:3vw;display:none;flex-direction:column;align-items:stretch;background:rgba(8,38,75,.98);border-radius:20px;padding:20px}.nav-links.open{display:flex}.hero-content{padding-top:120px}.quick-info,.cards.three,.course-grid,.social-grid,.split{grid-template-columns:1fr}.gallery-grid{grid-template-columns:1fr 1fr}.gallery-grid img:first-child{grid-row:auto;height:240px}.footer-grid{align-items:flex-start;flex-direction:column}}@media (max-width:560px){.hero h1{font-size:2.4rem}.hero-logo img{width:104px;height:104px}.section{padding:70px 0}.gallery-grid{grid-template-columns:1fr}.gallery-grid img,.gallery-grid img:first-child{height:260px}.course-grid{grid-template-columns:1fr}.poster img{height:auto}.form-actions .btn{width:100%}}