:root{
  --bg:#fbf8f1;--surface:#fff;--ink:#182033;--muted:#667085;--line:#e9e3d8;
  --blue:#5267e8;--blue-dark:#3f52c5;--sky:#dce7ff;--coral:#ff8e7d;--yellow:#ffd76a;
  --green:#9ad9bd;--violet:#b8a7ee;--navy:#17213b;--shadow:0 18px 60px rgba(43,39,31,.10);
  --radius:24px;--radius-sm:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"DM Sans",sans-serif;background:var(--bg);color:var(--ink);line-height:1.55}
button,input{font:inherit}.hidden{display:none!important}.shell{width:min(1180px,calc(100% - 40px));margin:auto}.skip-link{position:absolute;left:-9999px;top:8px;background:#fff;padding:10px 14px;z-index:1000}.skip-link:focus{left:8px}
.site-header{position:sticky;top:0;background:rgba(251,248,241,.94);backdrop-filter:blur(18px);z-index:50;border-bottom:1px solid rgba(233,227,216,.8)}
.header-inner{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-family:Nunito,sans-serif;line-height:.92;font-size:16px}.brand-mark{width:42px;height:42px;display:grid;place-items:center;background:var(--blue);color:#fff;border-radius:14px;font-size:15px;box-shadow:0 8px 20px rgba(82,103,232,.22)}
.main-nav{display:flex;gap:27px}.main-nav a,.footer a{color:#5d6576;text-decoration:none;font-size:14px}.main-nav a:hover,.footer a:hover{color:var(--ink)}.header-actions{display:flex;align-items:center;gap:9px}.icon-button,.ghost-button,.primary-button,.text-button,.profile-button{border:0;cursor:pointer}.icon-button{background:transparent;font-size:25px;color:var(--ink);padding:8px}.ghost-button{background:#fff;border:1px solid var(--line);padding:11px 16px;border-radius:12px;color:var(--ink);font-weight:600}.primary-button{background:var(--blue);color:#fff;padding:14px 22px;border-radius:14px;font-weight:700;box-shadow:0 10px 22px rgba(82,103,232,.22)}.primary-button:hover{background:var(--blue-dark);transform:translateY(-1px)}.primary-button.small{padding:11px 16px}.primary-button.full{width:100%}.text-button{background:transparent;color:var(--ink);font-weight:700;padding:12px 4px}.text-button span{margin-left:8px}.profile-button{width:42px;height:42px;border-radius:50%;background:var(--navy);color:#fff;font-weight:800}.search-panel{border-top:1px solid var(--line);background:#fff}.search-wrap{display:flex;gap:12px;padding:16px 0}.search-wrap input{flex:1;border:1px solid var(--line);border-radius:13px;padding:14px 16px;outline:none}.search-wrap input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(82,103,232,.12)}
.hero{min-height:660px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:70px;padding-top:68px;padding-bottom:70px}.eyebrow,.section-kicker{display:inline-block;color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.05em;text-transform:uppercase}.hero h1{font-family:Nunito,sans-serif;font-size:clamp(46px,5.3vw,76px);line-height:.98;letter-spacing:-.045em;margin:16px 0 22px;max-width:720px}.hero h1 span{color:var(--blue)}.hero-copy>p{font-size:19px;color:var(--muted);max-width:600px}.hero-actions{display:flex;gap:18px;align-items:center;margin-top:30px}.trust-row{display:flex;gap:20px;flex-wrap:wrap;margin-top:27px;font-size:13px;color:#707784}.hero-visual{position:relative;height:500px}.moon{position:absolute;width:370px;height:370px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#fff6d8,#efc86b 54%,#d9a645 100%);right:54px;top:36px;opacity:.7}.planet{position:absolute;border-radius:50%;opacity:.85}.planet-one{width:88px;height:88px;background:#b8a7ee;left:6px;top:40px}.planet-two{width:58px;height:58px;background:#9ad9bd;right:0;bottom:88px}.hero-card{position:absolute;background:#fff;border:1px solid rgba(255,255,255,.8);box-shadow:var(--shadow);border-radius:30px;overflow:hidden}.card-main{left:46px;top:76px;width:430px;transform:rotate(-2deg)}.video-placeholder{height:300px;position:relative;overflow:hidden}.space-bg{background:radial-gradient(circle at 75% 20%,rgba(255,255,255,.8),transparent 15%),linear-gradient(150deg,#8192f4 0%,#5a66d6 42%,#3a356e 100%)}.space-bg:before{content:"";position:absolute;width:240px;height:80px;border-radius:50%;background:#cec1f4;left:95px;bottom:-28px;box-shadow:80px -15px 0 -20px #9fd6bf}.star{position:absolute;color:#ffe279;font-size:28px;text-shadow:0 4px 12px rgba(0,0,0,.18)}.s1{left:54px;top:58px}.s2{right:76px;top:75px}.s3{left:205px;top:40px}.character{position:absolute;background:#fff2d7;border:5px solid rgba(255,255,255,.6);display:grid;place-items:center;color:#404060;font-family:Nunito;font-weight:900}.cat{width:82px;height:82px;border-radius:45% 45% 48% 48%;left:116px;bottom:42px}.kid{width:96px;height:110px;border-radius:48% 48% 38% 38%;right:98px;bottom:35px;background:#ffd3bd}.play-fab{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:62px;height:62px;border:0;border-radius:50%;background:#fff;color:var(--blue);box-shadow:0 8px 25px rgba(0,0,0,.17);font-size:20px}.hero-video-meta{display:flex;align-items:center;justify-content:space-between;padding:20px 22px}.hero-video-meta div{display:flex;flex-direction:column}.hero-video-meta span{font-size:12px;color:var(--muted);margin-top:3px}.duration{background:#f2f4fb;padding:7px 10px;border-radius:9px;color:var(--ink)!important}.floating-badge{position:absolute;background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:14px 16px;font-family:Nunito;font-weight:800}.badge-age{left:6px;bottom:56px;font-size:24px;line-height:.9;text-align:center}.badge-age span{font-size:12px;color:var(--muted)}.badge-goal{right:-5px;top:90px;font-size:12px;color:var(--muted)}.badge-goal strong{color:var(--ink);font-size:14px}
.quick-ages{background:#fff;padding:82px 0;border-top:1px solid #f0ebe2;border-bottom:1px solid #f0ebe2}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:40px;margin-bottom:28px}.section-heading.compact{align-items:center}.section-heading h2,.member-copy h2,.manifesto h2,.final-cta h2{font-family:Nunito,sans-serif;font-size:clamp(32px,3vw,46px);line-height:1.08;letter-spacing:-.025em;margin:7px 0 0}.section-heading p{color:var(--muted);max-width:480px}.age-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.age-card{border:1px solid var(--line);background:var(--bg);border-radius:22px;padding:28px 22px;text-align:left;cursor:pointer;transition:.2s}.age-card:hover{transform:translateY(-4px);border-color:#cfd5fa;box-shadow:0 14px 30px rgba(30,40,70,.08)}.age-card span{font-family:Nunito;font-weight:900;font-size:38px}.age-card small{display:block;color:var(--muted);margin-top:-3px}.age-card b{display:block;color:var(--blue);margin-top:24px;font-size:13px}
.catalog-section{padding:92px 0}.filter-row{display:flex;gap:8px;overflow:auto;padding-bottom:6px;margin-bottom:28px}.filter-chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 15px;white-space:nowrap;color:#596072;cursor:pointer}.filter-chip.active{background:var(--navy);color:#fff;border-color:var(--navy)}.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}.video-card{cursor:pointer}.thumb{aspect-ratio:16/10;border-radius:22px;overflow:hidden;position:relative;box-shadow:0 14px 30px rgba(33,36,49,.07)}.thumb:after{content:"▶";position:absolute;left:16px;bottom:16px;width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.94);display:grid;place-items:center;color:var(--ink);font-size:13px}.thumb.blue{background:linear-gradient(145deg,#a9b7ff,#5d6be2)}.thumb.coral{background:linear-gradient(145deg,#ffc2b8,#ef8879)}.thumb.yellow{background:linear-gradient(145deg,#ffe8a6,#efc74f)}.thumb.green{background:linear-gradient(145deg,#bcefd6,#75b99d)}.thumb.violet{background:linear-gradient(145deg,#d7cafa,#9f8cdd)}.thumb.navy{background:linear-gradient(145deg,#6676a9,#273052)}.thumb-scene{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:70px;color:rgba(255,255,255,.9);font-family:Nunito;font-weight:900}.thumb .time{position:absolute;right:12px;bottom:12px;background:rgba(22,30,48,.76);color:#fff;border-radius:8px;padding:5px 8px;font-size:11px}.video-info{padding:14px 4px}.video-info strong{display:block;font-family:Nunito;font-size:18px}.video-info span{color:var(--muted);font-size:13px}.video-info .meta-row{display:flex;justify-content:space-between;gap:12px;margin-top:7px}.lock{font-size:11px;color:var(--blue)!important;font-weight:700}.empty-state{text-align:center;padding:60px 20px;color:var(--muted)}.empty-icon{font-size:50px}
.category-band{background:var(--navy);padding:92px 0}.light-heading h2,.light-heading .section-kicker{color:#fff}.category-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.category-card{border:0;border-radius:24px;padding:24px;text-align:left;min-height:210px;cursor:pointer;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-end;transition:.2s}.category-card:hover{transform:translateY(-5px)}.category-card strong{font-family:Nunito;font-size:18px;line-height:1.15}.category-card small{margin-top:8px;color:rgba(24,32,51,.68);line-height:1.35}.category-icon{margin-bottom:auto;font-family:Nunito;font-weight:900;font-size:28px}.c-blue{background:#dce7ff}.c-coral{background:#ffd4cc}.c-yellow{background:#ffe8a6}.c-green{background:#ccebdc}.c-violet{background:#ddd4f6}
.member-section{padding:105px 0;display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center}.member-copy>p{color:var(--muted);font-size:17px;max-width:570px}.check-list{list-style:none;padding:0;margin:28px 0 32px;display:grid;gap:12px}.check-list span{display:inline-grid;place-items:center;width:24px;height:24px;background:#e8efff;color:var(--blue);border-radius:50%;margin-right:10px}.member-card{background:#fff;border-radius:28px;padding:30px;box-shadow:var(--shadow);border:1px solid #eee8dd}.member-card-header{display:flex;gap:13px;align-items:center}.avatar{width:48px;height:48px;border-radius:16px;background:#dce7ff;display:grid;place-items:center;font-weight:900;color:var(--blue)}.member-card-header div:last-child{display:flex;flex-direction:column}.member-card-header span,.progress-row,.mini-video span,.member-stats span{font-size:12px;color:var(--muted)}.progress-row{display:flex;justify-content:space-between;margin:28px 0 12px}.progress-row strong{color:var(--ink)}.mini-video-list{display:grid;gap:10px}.mini-video{display:flex;align-items:center;gap:12px;padding:12px;background:#faf9f6;border-radius:15px}.mini-thumb{width:66px;height:48px;border-radius:11px;display:grid;place-items:center;color:#fff}.mini-thumb.blue{background:#6877e8}.mini-thumb.coral{background:#ef8e7f}.mini-video div:last-child{display:flex;flex-direction:column}.member-stats{display:grid;grid-template-columns:repeat(3,1fr);margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}.member-stats div{display:flex;flex-direction:column}.member-stats strong{font-family:Nunito;font-size:22px}
.manifesto{background:#f1edff;padding:92px 0}.manifesto-inner{max-width:950px;text-align:center}.manifesto-inner>span{font-size:13px;font-weight:800;color:#7665c9;text-transform:uppercase;letter-spacing:.05em}.manifesto h2{font-size:clamp(36px,4.5vw,62px);margin:16px auto;max-width:980px}.manifesto p{color:#665f78;font-size:17px;max-width:720px;margin:0 auto}.final-cta{display:flex;align-items:center;justify-content:space-between;gap:30px;padding-top:80px;padding-bottom:80px}.footer{background:#fff;border-top:1px solid var(--line);padding:58px 0 24px}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:50px}.footer-grid>div{display:flex;flex-direction:column;gap:11px}.footer-grid p{color:var(--muted);font-size:13px;max-width:260px}.footer-grid strong{font-size:13px}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:22px;margin-top:45px;color:var(--muted);font-size:12px}
.modal-backdrop{position:fixed;inset:0;background:rgba(19,24,38,.55);display:grid;place-items:center;z-index:100;padding:20px}.modal{position:relative;background:#fff;border-radius:28px;box-shadow:0 30px 100px rgba(10,15,30,.3);max-height:92vh;overflow:auto}.auth-modal{width:min(480px,100%);padding:38px}.modal-close{position:absolute;right:18px;top:15px;border:0;background:#f5f3ef;width:36px;height:36px;border-radius:50%;font-size:23px;cursor:pointer}.modal-close.light{background:rgba(255,255,255,.9);z-index:2}.auth-brand{width:50px;height:50px;background:var(--blue);color:#fff;border-radius:16px;display:grid;place-items:center;margin-bottom:22px}.auth-modal h2{font-family:Nunito;font-size:30px;margin:0}.auth-modal p{color:var(--muted)}.auth-modal form{display:grid;gap:15px;margin:22px 0}.auth-modal label{display:grid;gap:6px;font-size:13px;font-weight:600}.auth-modal input{border:1px solid var(--line);border-radius:12px;padding:13px 14px;outline:none}.auth-modal input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(82,103,232,.12)}.auth-modal small{color:var(--muted)}.video-modal{width:min(1040px,100%);overflow:hidden}.player-placeholder{background:#111827;aspect-ratio:16/9}.player-scene{width:100%;height:100%;display:grid;place-items:center;background:linear-gradient(145deg,#7686ee,#34366d)}.player-icon{width:74px;height:74px;border-radius:50%;background:#fff;color:var(--blue);display:grid;place-items:center;font-size:24px}.video-detail-content{display:grid;grid-template-columns:1.5fr .75fr;gap:30px;padding:30px}.detail-tags{display:flex;gap:7px;flex-wrap:wrap}.detail-tags span{background:#f3f5fa;padding:6px 9px;border-radius:8px;font-size:11px;color:#5c6475}.video-detail-main h2{font-family:Nunito;font-size:30px;margin:12px 0 5px}.video-detail-main p{color:var(--muted)}.detail-actions{display:flex;gap:10px;margin-top:20px}.parent-note{background:#f8f5ee;border-radius:18px;padding:20px;display:flex;flex-direction:column;align-self:start}.parent-note span{font-size:11px;text-transform:uppercase;font-weight:800;color:var(--blue)}.parent-note strong{margin-top:8px}.parent-note p{font-size:13px;color:var(--muted)}.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:var(--navy);color:#fff;padding:12px 18px;border-radius:12px;z-index:120;box-shadow:var(--shadow);font-size:13px}
@media(max-width:900px){.main-nav{display:none}.hero{grid-template-columns:1fr;min-height:auto;padding-top:50px}.hero-visual{height:440px}.card-main{left:50%;transform:translateX(-50%) rotate(-2deg);width:min(430px,90%)}.age-grid{grid-template-columns:repeat(2,1fr)}.video-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.member-section{grid-template-columns:1fr;gap:45px}.footer-grid{grid-template-columns:repeat(2,1fr)}.video-detail-content{grid-template-columns:1fr}}
@media(max-width:620px){.shell{width:min(100% - 28px,1180px)}.site-header .ghost-button,.site-header .primary-button.small{display:none}.hero{gap:15px}.hero h1{font-size:48px}.hero-copy>p{font-size:17px}.hero-actions{align-items:flex-start;flex-direction:column}.trust-row{gap:10px 14px}.hero-visual{height:365px}.moon{width:280px;height:280px;right:20px}.card-main{top:55px}.video-placeholder{height:230px}.floating-badge.badge-goal{right:5px;top:30px}.badge-age{left:2px;bottom:18px}.section-heading{align-items:flex-start;flex-direction:column;gap:10px}.age-grid{grid-template-columns:repeat(2,1fr)}.age-card{padding:20px 16px}.video-grid{grid-template-columns:1fr}.category-grid{grid-template-columns:1fr}.category-card{min-height:160px}.member-section{padding:75px 0}.final-cta{flex-direction:column;align-items:flex-start}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{flex-direction:column;gap:8px}.video-detail-content{padding:20px}.detail-actions{flex-direction:column}.auth-modal{padding:28px 22px}.header-inner{height:68px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* Science, language and complete sitemap enhancements */
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.language-control{display:flex;align-items:center}.language-control select{appearance:none;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:11px;padding:9px 27px 9px 11px;font-size:12px;font-weight:800;cursor:pointer;background-image:linear-gradient(45deg,transparent 50%,#707784 50%),linear-gradient(135deg,#707784 50%,transparent 50%);background-position:calc(100% - 13px) 50%,calc(100% - 9px) 50%;background-size:4px 4px,4px 4px;background-repeat:no-repeat}.language-control select:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(82,103,232,.12)}
.main-nav{gap:20px}.main-nav a{white-space:nowrap}
.science-section{padding:108px 0;background:#fff;border-top:1px solid #eee9df;border-bottom:1px solid #eee9df}.science-intro{display:grid;grid-template-columns:.85fr 1.15fr;gap:85px;align-items:end;margin-bottom:44px}.science-intro h2{font-family:Nunito,sans-serif;font-size:clamp(36px,4vw,58px);line-height:1.02;letter-spacing:-.035em;margin:9px 0 0}.science-intro p{font-size:18px;color:var(--muted);margin:0;max-width:660px}.science-principles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.science-card{background:var(--bg);border:1px solid var(--line);border-radius:24px;padding:27px;min-height:285px;display:flex;flex-direction:column;align-items:flex-start}.science-card:nth-child(1){background:#f4f1ff}.science-card:nth-child(2){background:#eef4ff}.science-card:nth-child(3){background:#fff8de}.science-card:nth-child(4){background:#eff9f3}.science-card:nth-child(5){background:#fff2ee}.science-card-wide{grid-column:span 2}.science-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:14px;background:rgba(255,255,255,.8);font-family:Nunito,sans-serif;font-size:21px;font-weight:900;color:var(--blue);margin-bottom:18px}.science-card h3{font-family:Nunito,sans-serif;font-size:21px;line-height:1.15;margin:0 0 10px}.science-card p{color:#596172;font-size:14px;margin:0 0 14px}.science-card small{display:block;color:#6d7280;font-size:12px;font-weight:600;margin-top:auto;padding-top:10px}.science-card a{margin-top:16px;color:var(--blue);text-decoration:none;font-size:12px;font-weight:800}.science-card a:hover{text-decoration:underline}.science-manifesto{margin-top:22px;border-radius:28px;background:var(--navy);color:#fff;padding:38px 42px;display:grid;grid-template-columns:1fr .8fr;gap:50px;align-items:center}.science-manifesto span{font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:#c7d1ff}.science-manifesto h3{font-family:Nunito,sans-serif;font-size:clamp(28px,3.2vw,45px);line-height:1.04;letter-spacing:-.025em;margin:9px 0 0}.science-manifesto p{color:#c9cfdd;margin:0;font-size:15px}.science-transparency{margin-top:18px;padding:20px 23px;border-left:4px solid var(--blue);background:#f7f6f2;border-radius:0 15px 15px 0}.science-transparency strong{font-family:Nunito,sans-serif;font-size:16px}.science-transparency p{margin:6px 0 0;color:var(--muted);font-size:13px;max-width:980px}
.check-list b{font-weight:500}
.footer-sitemap{grid-template-columns:1.55fr repeat(5,minmax(0,1fr));gap:34px}.footer-sitemap>div{min-width:0}.footer-sitemap>div:not(.footer-about)>strong{font-family:Nunito,sans-serif;font-size:14px;margin-bottom:4px}.footer-sitemap a{line-height:1.35}.footer-about p{max-width:280px}.footer-badges{display:flex;gap:7px;flex-wrap:wrap}.footer-badges span{font-size:11px;background:#f5f3ef;color:#666d7c;border-radius:8px;padding:6px 8px}
@media(max-width:1100px){.main-nav{display:none}.footer-sitemap{grid-template-columns:1.4fr repeat(3,1fr)}.footer-about{grid-row:span 2}}
@media(max-width:900px){.science-intro{grid-template-columns:1fr;gap:18px}.science-principles{grid-template-columns:repeat(2,1fr)}.science-card-wide{grid-column:span 2}.science-manifesto{grid-template-columns:1fr;gap:18px}.footer-sitemap{grid-template-columns:repeat(3,1fr)}.footer-about{grid-column:1/-1;grid-row:auto}}
@media(max-width:620px){.language-control select{padding:8px 25px 8px 9px}.icon-button{display:none}.science-section{padding:76px 0}.science-principles{grid-template-columns:1fr}.science-card-wide{grid-column:auto}.science-card{min-height:0}.science-manifesto{padding:28px 24px}.footer-sitemap{grid-template-columns:1fr 1fr}.footer-about{grid-column:1/-1}.footer-sitemap>div{gap:9px}}

/* Brand logo */
.brand-logo-link{display:inline-flex;align-items:center;flex:0 0 auto}
.site-logo{display:block;width:auto;height:48px;max-width:285px;object-fit:contain}
.header-logo{width:52px;height:52px;max-width:52px;object-fit:contain}
.footer-logo{height:58px;max-width:330px;margin-bottom:4px}
@media(max-width:1100px){.site-logo{height:42px;max-width:235px}.header-logo{width:46px;height:46px;max-width:46px}}
@media(max-width:760px){.site-logo{height:38px;max-width:205px}.header-logo{width:42px;height:42px;max-width:42px}.footer-logo{height:48px;max-width:260px}}
@media(max-width:420px){.site-logo{height:34px;max-width:180px}.header-logo{width:38px;height:38px;max-width:38px}}