.hero h1{font-size:clamp(2.3rem,3.8vw,3.9rem);line-height:1.12}.hero{padding-top:48px}.hero-photo img{height:auto;max-height:460px;aspect-ratio:4/3;object-fit:cover}.header-inner{flex-wrap:wrap;gap:12px 20px}.header-inner nav{gap:18px}.system-login{font-size:.9rem}.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px 13px;padding-top:24px;font-size:.85rem;color:var(--muted)}.breadcrumbs a{text-decoration:none;font-weight:400}.seo-editorial{padding-top:25px;padding-bottom:48px}.seo-block{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:65px;padding:36px 0;border-top:1px solid var(--line)}.seo-block h2{font-size:clamp(1.6rem,2.5vw,2.15rem);line-height:1.22;letter-spacing:-.025em;margin:4px 0;color:var(--purple);font-weight:600}.seo-block p{margin:0 0 17px;color:var(--muted);font-size:1.04rem;line-height:1.8}.seo-block p:last-child{margin-bottom:0}.related-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.related-links a{border:1px solid var(--line);padding:10px 14px;border-radius:7px;text-decoration:none;font-size:.9rem;font-weight:600}.related-links a:hover{background:var(--wash)}.whatsapp-float{position:fixed;right:max(20px,env(safe-area-inset-right));bottom:max(20px,env(safe-area-inset-bottom));display:flex;align-items:center;gap:10px;z-index:30;background:#146c43;color:#fff;border:0;border-radius:30px;padding:12px 20px;box-shadow:0 4px 20px #0002;text-decoration:none;font-size:1rem;font-weight:700;line-height:1.15;min-height:55px}.whatsapp-float:hover{background:#105634}.whatsapp-float small{display:block;font-size:.75rem;font-weight:400;margin-top:4px}.whatsapp-panel[hidden]{display:none}.whatsapp-panel{display:block;position:fixed;right:20px;bottom:105px;z-index:31;width:min(355px,calc(100vw - 32px));padding:27px;background:#fff;border:1px solid var(--line);border-radius:13px;box-shadow:0 8px 40px #0002}.whatsapp-panel h2{font-size:1.2rem;padding-right:18px;line-height:1.3;margin:0 0 12px;color:var(--purple)}.whatsapp-panel p{font-size:.95rem;margin:0 0 12px}.whatsapp-panel a{font-size:.9rem}.whatsapp-close{position:absolute;right:8px;top:7px;width:38px;height:38px;border:0;background:transparent;color:var(--purple);font-size:1.6rem}.footer-bottom{padding-bottom:105px}
@media(max-width:1120px){.header-inner{padding-block:8px}.header-inner nav{gap:13px}.seo-block{gap:30px}.system-login{padding:10px 12px}.brand{padding-left:0;padding-right:0}.brand img{width:140px}}
@media(max-width:950px){.header-inner{flex-wrap:wrap}.menu-button{display:block;margin-left:auto;order:2}.system-login{display:inline-flex!important;align-items:center;gap:8px;order:1}.header-inner nav{display:none;flex-basis:100%;order:3;flex-wrap:wrap;padding:10px 0}.header-inner nav.open{display:flex}.brand{order:0}.seo-block{grid-template-columns:1fr;gap:20px}.related-links{display:flex!important}.breadcrumbs{display:flex!important}.hero{padding-top:30px}.seo-block h2{max-width:700px}}
@media(max-width:520px){.header-inner{gap:6px 10px}.brand img{width:125px}.system-login{font-size:.79rem;padding:9px 8px}.system-login span{display:none}.menu-button{font-size:.85rem;padding:8px}.hero h1{font-size:2.4rem}.seo-block{padding:27px 0;gap:15px}.seo-block p{font-size:1rem}.whatsapp-float{right:14px;bottom:14px;padding:12px 16px}.whatsapp-panel{right:14px;bottom:98px}.breadcrumbs{font-size:.8rem}.related-links a{width:100%;font-size:.9rem}}

/* Flotante solicitado: sólo el logo de WhatsApp, 18/09/2026. */
.whatsapp-float{width:60px;height:60px;min-height:60px;padding:15px!important;border-radius:50%;justify-content:center;background:#128c4b}.whatsapp-float img{display:block;width:30px;height:30px}.whatsapp-float:hover{background:#0e713c}

/* Utilidad propia de cada recorrido, tras revisión adversarial. */
.practice-sample{background:var(--wash);padding:32px;border-radius:14px;margin:0 0 35px}.practice-sample h2,.format-compare h2{font-size:1.8rem;line-height:1.25;color:var(--purple);margin-top:0}.practice-sample p{max-width:900px}.practice-sample ul{list-style:none;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:15px}.practice-sample li{background:#fff;border:1px solid var(--line);border-radius:8px;padding:20px}.practice-sample li span{display:block}.practice-sample [lang=en]{font-weight:700;color:var(--purple);margin-bottom:9px}.format-compare{margin:0 0 38px}.table-scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;text-align:left}caption{text-align:left;font-size:.9rem;color:var(--muted);padding:0 0 15px}th,td{border-bottom:1px solid var(--line);padding:16px;vertical-align:top}thead{background:var(--wash)}
@media(max-width:600px){.practice-sample{padding:23px}.practice-sample ul{grid-template-columns:1fr}.practice-sample h2,.format-compare h2{font-size:1.55rem}th,td{padding:12px;min-width:120px}}

.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 24px}.footer-social{display:flex;flex-wrap:wrap;gap:8px 24px}.footer-social a{display:inline-flex;align-items:center;gap:8px;min-height:44px;color:var(--purple);font-weight:600;text-decoration:none}.footer-social a:hover{text-decoration:underline}.footer-social a:focus-visible{outline:2px solid var(--purple);outline-offset:4px;border-radius:3px}