:root{
  --blue:#0ea5e9; --blue-2:#38bdf8; --deep:#0f2d4d; --navy:#061b35; --sky:#e0f7ff; --white:#ffffff; --muted:#5f7185; --line:rgba(15,45,77,.12); --shadow:0 24px 70px rgba(8,50,90,.17); --radius:28px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--deep);background:linear-gradient(180deg,#f4fbff 0%,#e5f8ff 48%,#f9fdff 100%);overflow-x:hidden} a{color:inherit} img{max-width:100%;display:block}.wrap{width:min(1160px,calc(100% - 36px));margin-inline:auto}.section-pad{padding:92px 0}.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:#fff;padding:12px;border-radius:10px;z-index:999}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:900;letter-spacing:-.02em}.brand img{width:42px;height:42px}.menu{display:flex;align-items:center;gap:20px}.menu a{text-decoration:none;font-weight:700;font-size:.94rem;color:#12385c}.menu a:hover{color:var(--blue)}.lang,.nav-toggle{border:0;background:#e5f5ff;color:#06365c;border-radius:999px;font-weight:900;padding:9px 11px;cursor:pointer}.lang.is-active{background:var(--deep);color:#fff}.nav-toggle{display:none;font-size:1.4rem}.hero{position:relative;min-height:760px;display:grid;align-items:center;background:radial-gradient(circle at 78% 10%,rgba(255,255,255,.9),transparent 26%),linear-gradient(135deg,#eaf9ff 0%,#bdefff 48%,#ffffff 100%);overflow:hidden}.hero:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 18% 82%,rgba(255,255,255,.9) 0 8%,transparent 9%),radial-gradient(circle at 75% 74%,rgba(255,255,255,.65) 0 12%,transparent 13%);opacity:.8}.cloud{position:absolute;border-radius:999px;filter:blur(2px);background:rgba(255,255,255,.75);box-shadow:40px 18px 0 12px rgba(255,255,255,.65),-45px 20px 0 16px rgba(255,255,255,.55)}.cloud-a{width:150px;height:60px;left:6%;top:22%;animation:float 8s ease-in-out infinite}.cloud-b{width:190px;height:70px;right:8%;bottom:18%;animation:float 10s ease-in-out infinite reverse}@keyframes float{50%{transform:translateY(-18px)}}.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;text-transform:uppercase;letter-spacing:.22em;font-size:.78rem;font-weight:900;color:var(--blue)}h1,h2,h3{font-family:Montserrat,Inter,sans-serif;line-height:1.02;margin:0;color:var(--deep)}h1{font-size:clamp(3.1rem,7vw,6.9rem);letter-spacing:-.075em}h2{font-size:clamp(2rem,4vw,3.7rem);letter-spacing:-.055em}.lead{font-size:clamp(1.25rem,2.4vw,2rem);font-weight:800;color:#1c8cdc;margin:22px 0 14px}.hero-text,p{font-size:1.05rem;line-height:1.7;color:#476075}.hero-text{max-width:670px}.cta-row,.contact-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 24px;border-radius:999px;text-decoration:none;font-weight:900;border:1px solid transparent;cursor:pointer;transition:.25s ease}.btn.primary{background:linear-gradient(135deg,var(--blue),#1d4ed8);color:#fff;box-shadow:0 14px 28px rgba(14,165,233,.28)}.btn.ghost{background:rgba(255,255,255,.68);border-color:var(--line);color:var(--deep)}.btn:hover{transform:translateY(-3px)}.trust-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.trust-row span{background:rgba(255,255,255,.68);border:1px solid var(--line);border-radius:999px;padding:9px 14px;font-weight:700}.hero-media{display:grid;place-items:center;position:relative}.book-card{width:min(410px,82vw);padding:18px;border-radius:34px;background:rgba(255,255,255,.56);box-shadow:var(--shadow);transform:rotate(2deg)}.book-card img{border-radius:18px}.paper-plane{position:absolute;right:2%;bottom:2%;width:140px;height:98px;background:linear-gradient(135deg,#75d5ff,#0b7dda);clip-path:polygon(0 36%,100% 0,68% 100%,45% 57%,22% 78%);filter:drop-shadow(0 18px 18px rgba(8,50,90,.2));animation:float 7s ease-in-out infinite}.two-col,.author-grid,.video-grid,.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}.card,.buy-card,.social-card,.contact-form{background:rgba(255,255,255,.78);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.glass{padding:42px}.feature-list{display:grid;gap:18px}.feature-list article{padding:24px;border-radius:24px;background:#fff;border:1px solid var(--line);box-shadow:0 15px 40px rgba(8,50,90,.08)}.feature-list strong{display:block;font-size:1.35rem;color:var(--deep);margin-bottom:6px}.feature-list span{color:var(--muted)}.author{background:linear-gradient(180deg,rgba(255,255,255,.3),rgba(216,246,255,.55))}.author-photo{border-radius:34px;overflow:hidden;background:#0aa5ee;box-shadow:var(--shadow)}.author-photo img{width:100%;height:540px;object-fit:cover;object-position:center top}.video-frame{position:relative;padding-top:177.77%;border-radius:32px;overflow:hidden;box-shadow:var(--shadow);max-width:380px;justify-self:center;background:#000}.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.section-head{text-align:center;max-width:720px;margin:0 auto 36px}.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.gallery-item{border:0;padding:0;border-radius:24px;overflow:hidden;background:#fff;box-shadow:0 16px 40px rgba(8,50,90,.11);cursor:zoom-in;min-height:270px}.gallery-item img{width:100%;height:100%;object-fit:cover;transition:.35s ease}.gallery-item:hover img{transform:scale(1.04)}.gallery-item.wide{grid-column:span 2}.buy-card{padding:38px;display:flex;align-items:center;justify-content:space-between;gap:24px;background:linear-gradient(135deg,#fff,#e3f8ff)}.amazon-link{display:flex;align-items:center;gap:16px;text-decoration:none;background:#fff;border-radius:22px;padding:18px 22px;font-weight:900;box-shadow:0 14px 30px rgba(8,50,90,.12)}.amazon-link img{width:130px}.social-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;align-items:start}.social-card{padding:24px;min-height:360px;overflow:hidden}.embed-box{width:100%;overflow:hidden;border-radius:18px}.embed-box iframe{width:100%!important;max-width:100%}.instagram-media{min-width:0!important;width:100%!important}.youtube-logo{width:92px;height:92px;border-radius:28px;background:#ff0033;color:#fff;display:grid;place-items:center;font-size:3rem;margin:30px 0 18px;box-shadow:0 16px 30px rgba(255,0,51,.22)}.contact-form{padding:28px;display:grid;gap:16px}.contact-form label{display:grid;gap:8px;font-weight:800}.contact-form input,.contact-form textarea{width:100%;border:1px solid var(--line);border-radius:16px;padding:14px 16px;font:inherit;color:var(--deep);background:#fff}.contact-form input:focus,.contact-form textarea:focus{outline:3px solid rgba(14,165,233,.18);border-color:var(--blue)}.footer{padding:34px 0;background:var(--navy);color:#fff}.footer p{margin:6px 0;color:#dbeafe}.footer a{color:#9fe8ff;font-weight:900}.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.whatsapp{position:fixed;right:20px;bottom:20px;width:64px;height:64px;border-radius:50%;display:grid;place-items:center;text-decoration:none;color:#fff;background:#25d366;font-size:2rem;box-shadow:0 16px 36px rgba(37,211,102,.36);z-index:60}.whatsapp:before{content:"☎"}.whatsapp{font-size:0}.lightbox{border:0;border-radius:24px;padding:12px;background:#fff;box-shadow:0 30px 90px rgba(0,0,0,.3);max-width:min(94vw,1000px)}.lightbox::backdrop{background:rgba(6,27,53,.72);backdrop-filter:blur(6px)}.lightbox img{max-height:86vh;border-radius:16px}.close-lightbox{position:absolute;right:16px;top:16px;width:42px;height:42px;border:0;border-radius:50%;background:var(--deep);color:#fff;font-size:1.7rem;cursor:pointer}.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}.reveal.in{opacity:1;transform:none}@media(max-width:900px){.nav-toggle{display:inline-flex}.menu{position:absolute;left:18px;right:18px;top:82px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:var(--shadow);display:none;flex-direction:column;align-items:flex-start}.menu.open{display:flex}.hero-grid,.two-col,.author-grid,.video-grid,.contact-grid{grid-template-columns:1fr}.hero{min-height:auto}.section-pad{padding:68px 0}.hero-media{order:-1}.book-card{width:min(330px,74vw)}.paper-plane{width:100px;height:70px}.gallery-grid,.social-grid{grid-template-columns:1fr 1fr}.buy-card{display:grid}.author-photo img{height:auto}.video-frame{max-width:320px}.footer-inner{display:block}}@media(max-width:560px){.wrap{width:min(100% - 24px,1160px)}.nav{height:68px}.brand span{font-size:.9rem}.hero-copy{text-align:left}h1{font-size:3rem}.section-pad{padding:54px 0}.glass,.buy-card{padding:24px}.gallery-grid,.social-grid{grid-template-columns:1fr}.gallery-item.wide{grid-column:auto}.gallery-item{min-height:auto}.gallery-item img{height:auto}.cta-row .btn,.contact-actions .btn{width:100%}.amazon-link{justify-content:center}.whatsapp{width:58px;height:58px;right:14px;bottom:14px}.video-frame{width:100%;max-width:280px}.social-card{min-height:auto}}


/* Correccion video: iframe visible, responsivo y con liga de respaldo */
.video{background:linear-gradient(180deg,#e9fbff 0%,#dff8ff 100%)}
.video-frame.video-visible{opacity:1!important;transform:none!important;position:relative;width:min(360px,92vw);aspect-ratio:9/16;min-height:520px;border-radius:32px;overflow:hidden;box-shadow:0 24px 60px rgba(8,50,90,.22);background:#081f36;justify-self:center;border:10px solid rgba(255,255,255,.75)}
.video-frame.video-visible iframe{position:absolute;inset:0;width:100%!important;height:100%!important;border:0;background:#081f36;z-index:1}
.video-fallback{position:absolute;left:14px;right:14px;bottom:14px;z-index:2;display:flex;align-items:center;justify-content:center;min-height:44px;border-radius:999px;text-decoration:none;font-weight:900;color:#fff;background:rgba(8,31,54,.72);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.25)}
.video-fallback:before{content:"▶";margin-right:8px;color:#38bdf8}
@media(max-width:900px){.video-grid{gap:28px}.video-frame.video-visible{width:min(320px,88vw);min-height:500px}}
@media(max-width:560px){.video-frame.video-visible{width:min(300px,92vw);min-height:500px;border-width:7px;border-radius:26px}.video-fallback{font-size:.85rem}}