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@media(max-width:1100px){.site-header{gap:22px}.main-nav{gap:18px}.hero{padding-left:6vw;padding-right:6vw;column-gap:20px}.hero-art{transform:scale(.9)}.section{padding-left:5vw;padding-right:5vw}.playlist-grid{grid-template-columns:repeat(2,1fr)}.playlist-visual{height:210px}.playlist-info p{min-height:0}.about-section{grid-template-columns:190px 1fr;gap:35px}.about-values{grid-column:2;grid-template-columns:repeat(3,1fr);border-left:0;border-top:1px solid var(--line);padding:20px 0 0}.about-values div{grid-template-columns:25px 1fr}.about-values small{grid-column:2}.ai-section{gap:5%;padding-left:7vw;padding-right:7vw}}
@media(max-width:760px){.preview-notice{font-size:8px;letter-spacing:.1em}.site-header{height:72px;padding:0 20px;justify-content:space-between}.brand img{width:205px}.playlist-brand{width:245px;margin-bottom:14px}.header-cta{display:none}.menu-toggle{display:flex;width:42px;height:42px;flex-direction:column;justify-content:center;align-items:center;gap:6px;background:transparent;border:1px solid var(--line);border-radius:50%;cursor:pointer}.menu-toggle span{width:17px;height:2px;border-radius:4px;background:var(--indigo)}.main-nav{display:none;position:absolute;left:0;right:0;top:71px;padding:19px 22px 23px;background:var(--warm);border-bottom:1px solid var(--line);box-shadow:0 14px 22px rgba(23,22,75,.08);flex-direction:column;gap:15px;margin:0}.main-nav.is-open{display:flex}.hero{padding:57px 23px 26px;display:flex;flex-direction:column;align-items:stretch;min-height:0;gap:0}.hero-copy{padding:0}.eyebrow{font-size:9px}.hero h1{font-size:clamp(43px,12vw,63px)}.hero-lede{font-size:15px;margin:20px 0 21px}.hero-actions{gap:18px;flex-wrap:wrap}.button{padding:13px 17px;font-size:12px}.hero-meta{margin-top:24px;font-size:10px}.hero-art{height:370px;margin-top:16px;transform:scale(.83);transform-origin:center center;margin-left:-10%;margin-right:-10%;margin-bottom:-28px}.hero-core{width:240px;height:240px}.hero-core img{width:190px;height:178px}.hero-caption{right:1%}.hero-bottomline{justify-content:center;font-size:7px;gap:9px}.hero-bottomline i{width:13px}.section{padding:70px 22px}.playlist-section{padding-top:66px}.section-heading{display:block;margin-bottom:26px}.section-heading h2,.about-copy h2{font-size:36px}.section-intro{margin-top:13px;font-size:13px}.playlist-grid{grid-template-columns:1fr;gap:14px}.playlist-card{display:grid;grid-template-columns:40% 60%;min-height:174px}.playlist-visual{height:100%;min-height:174px}.playlist-info{padding:16px 14px}.card-kicker{font-size:7px;gap:4px}.playlist-info h3{font-size:17px;margin:8px 0 5px}.playlist-info p{font-size:10px;margin-bottom:10px}.playlist-link{font-size:10px}.visual-label{font-size:7px!important;left:9px!important}.math-circle{width:70px;height:70px;font-size:24px;border-width:9px;left:13%}.math-square{width:49px;height:49px;font-size:24px;right:15%}.math-sticker{font-size:7px;right:4%;bottom:8%}.visual-ai .orb-a{width:68px;height:68px;font-size:27px;left:23%}.visual-ai .orb-b{right:11%;width:36px;height:36px}.browser-window{width:138px;height:95px}.browser-content{padding:10px}.browser-content em{font-size:8px}.cursor-arrow{font-size:38px;right:9%}.science-note{right:5%;font-size:8px}.atom{transform:scale(.8)}.sample-caption{font-size:10px}.latest-section{padding-top:60px;padding-bottom:78px}.latest-heading .text-link{display:inline-block;margin-top:15px}.filter-row{gap:7px;margin-top:19px}.filter-chip{font-size:9px;padding:8px 11px}.video-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 13px}.video-thumb{padding:13px 11px;border-radius:12px}.thumb-tag{top:9px;left:9px;font-size:6px;padding:5px 6px}.video-thumb strong{font-size:clamp(17px,5vw,23px)}.fraction-disc{width:77px;height:77px;border-width:5px;right:5%;top:32%}.fraction-disc b{font-size:16px}.web-thumb-icon{width:66px;height:66px;right:9%;top:34%;border-radius:14px}.web-thumb-icon b{font-size:35px}.web-thumb-icon span{width:25px;height:25px;font-size:18px;right:-9px}.ai-spark{right:6%;top:34%;font-size:59px}.floaty{width:74px;height:65px;right:4%;top:37%;font-size:15px}.equation{right:4%;top:37%;font-size:11px;padding:8px}.prompt-mark{right:4%;top:31%;font-size:49px}.video-meta{padding-top:10px}.video-label{font-size:6px;letter-spacing:.04em}.video-meta h3{font-size:12px;margin:5px 0}.video-meta p{font-size:10px;line-height:1.4}.library-bottom{padding:16px;display:flex;align-items:flex-start;flex-direction:column;gap:13px;font-size:13px}.ai-section{display:block;padding:75px 24px}.ai-copy h2{font-size:39px}.ai-copy>p:not(.eyebrow){font-size:13px}.ai-process{margin-top:29px}.process-step{grid-template-columns:30px 1fr 20px;gap:10px;padding:15px 0}.process-step strong{font-size:12px}.process-step p{font-size:10px}.ai-note{font-size:9px}.ai-disclosure{padding:13px}.ai-disclosure p{font-size:10px}.ai-decoration{left:auto;right:-225px;bottom:-180px;width:360px;height:360px}.ai-decoration span{width:78px;height:78px;right:76px;top:37px;font-size:28px}.about-section{display:flex;flex-direction:column;align-items:flex-start;gap:27px;padding-top:75px;padding-bottom:75px}.about-symbol{width:205px;height:125px;align-self:center}.about-symbol img{width:116px;height:109px;object-fit:contain}.about-copy h2{font-size:34px}.about-copy>p:not(.eyebrow){font-size:12px}.about-values{width:100%;padding-top:18px;gap:8px}.about-values div{grid-template-columns:22px 1fr}.about-values strong{font-size:12px}.about-values small{font-size:8px}.closing-cta{margin:0 15px 55px;padding:29px 23px;min-height:0;display:grid;grid-template-columns:72px 1fr;gap:17px;border-radius:19px}.closing-mark{width:70px;height:70px;border-radius:22px}.closing-mark img{width:58px;height:58px}.closing-cta h2{font-size:28px}.closing-cta .eyebrow{font-size:7px}.button-light{grid-column:2;margin:0;justify-self:start}.site-footer{padding:0 22px 20px;display:flex;flex-direction:column;gap:18px}.footer-brand img{width:185px}.footer-links{flex-wrap:wrap;gap:14px}.footer-links a{font-size:10px}.footer-note{font-size:9px}.footer-bottom{width:100%;gap:12px;font-size:8px}.episode-dialog{padding:27px 23px}.episode-dialog h2{font-size:23px}}
@media(max-width:390px){.brand img{width:185px}.video-grid{gap:22px 9px}.video-thumb strong{font-size:16px}.video-label{font-size:5.5px}.playlist-card{grid-template-columns:37% 63%}.playlist-info{padding:13px 11px}.card-kicker{font-size:6px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* Identidad v3 seleccionada: marca con símbolo volumétrico 3D. */
.brand-lockup{display:flex;align-items:center;gap:8px;flex:none}.brand-lockup .brand-symbol{display:block;object-fit:contain;flex:none}.brand-lockup .brand-wordmark{display:flex;flex-direction:column;align-items:flex-start;font-family:Manrope,Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;font-weight:800;line-height:.91;letter-spacing:-.055em;color:var(--indigo)}.brand .brand-symbol{width:58px;height:58px}.brand .brand-wordmark{font-size:20px}.playlist-brand.brand-lockup{width:min(270px,100%);height:92px;margin:0 0 16px;gap:9px}.playlist-brand .brand-symbol{width:82px;height:82px}.playlist-brand .brand-wordmark{font-size:28px}.brand-learn{margin-top:5px;padding:4px 12px 5px;border-radius:12px;background:var(--coral);color:var(--ink);font-size:.68em;letter-spacing:-.025em;line-height:1}.brand-footer .brand-symbol{width:50px;height:50px}.brand-footer .brand-wordmark{font-size:17px}.footer-brand img.brand-symbol{width:50px;height:50px}
@media(max-width:760px){.brand .brand-symbol{width:48px;height:48px}.brand .brand-wordmark{font-size:17px}.playlist-brand.brand-lockup{height:78px}.playlist-brand .brand-symbol{width:68px;height:68px}.playlist-brand .brand-wordmark{font-size:23px}.brand-learn{padding:4px 10px}.brand-footer .brand-symbol,.footer-brand img.brand-symbol{width:44px;height:44px}.brand-footer .brand-wordmark{font-size:15px}}

/* Identidad v3: dirección volumétrica 3D para ilustraciones y marca. */
.playlist-art{position:relative;z-index:1;width:82%;height:82%;object-fit:contain;filter:drop-shadow(0 12px 14px rgba(23,22,75,.18))}.playlist-visual{isolation:isolate}.playlist-visual .visual-label{z-index:2;text-shadow:0 1px 5px rgba(23,22,75,.25)}.video-thumb{isolation:isolate}.video-art{position:absolute;z-index:1;right:2%;bottom:-5%;width:49%;height:95%;object-fit:contain;filter:drop-shadow(0 8px 9px rgba(23,22,75,.16));pointer-events:none}.video-thumb .thumb-tag,.video-thumb strong,.video-thumb .duration{z-index:2}.video-thumb .fraction-disc,.video-thumb .web-thumb-icon,.video-thumb .ai-spark,.video-thumb .floaty,.video-thumb .prompt-mark,.video-thumb .equation{display:none}
@media(max-width:760px){.playlist-art{width:90%;height:86%}.video-art{width:48%;height:92%;right:0;bottom:-3%}}