/* Super Baby: a child's picture book, with room for real videos. */
@font-face{font-family:Nunito;src:url('assets/fonts/nunito-sans-400.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:Nunito;src:url('assets/fonts/nunito-sans-700.ttf') format('truetype');font-weight:700;font-display:swap}
.concept-a{--ink:#30342f;--muted:#606459;--violet:#6850cb;--violet-dark:#4d369d;--green:#287656;--coral:#d75038;--yellow:#ffd24f;--cream:#faf8e9;--paper:#fffefa;--shadow:0 8px 24px #413b2810;color:var(--ink);font:16px/1.6 Nunito,Arial,sans-serif;background:white;scrollbar-color:#b9a6e3 #faf8e9}
.concept-a::before{display:none}.concept-a *{box-sizing:border-box}.concept-a h1,.concept-a h2,.concept-a h3{color:var(--ink);font-weight:600}.concept-a h1,.concept-a h2{font-family:Fredoka,Nunito,sans-serif;letter-spacing:-.025em;text-wrap:balance}.concept-a h2{font-size:40px;line-height:1.16}.concept-a h2 span{color:var(--green)}.concept-a p{color:var(--muted)}.concept-a .wrap{width:min(1200px,calc(100% - 80px));margin-inline:auto}.concept-a a{color:inherit}.concept-a button{font-family:inherit}.concept-a [tabindex]:focus-visible,.concept-a a:focus-visible,.concept-a button:focus-visible{outline:3px solid var(--violet);outline-offset:5px}.concept-a ::selection{background:#ffda78;color:#30342f}
.concept-a .button{border-radius:10px 14px 12px 16px;background:var(--coral);color:white;padding:13px 24px;min-height:50px;box-shadow:0 6px 12px #b7443020;gap:13px;font-size:15px;transition:background .2s,transform .25s}.concept-a .button:hover{background:#b83d28;transform:translateY(-3px) rotate(-1deg)}.concept-a .text-link{color:var(--green);display:inline-flex;align-items:center;gap:12px;min-height:44px;font-size:14px;font-weight:700;text-decoration:underline;text-decoration-color:#93b4a2;text-underline-offset:5px}.concept-a .text-link:hover{color:var(--coral);text-decoration-color:currentColor}.concept-a svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;flex-shrink:0}
/* Header carries the exact category-page navigation. */
.concept-a .site-header{background:var(--cream);position:relative;z-index:3}.concept-a .site-header>.header-top{display:flex;align-items:center;justify-content:space-between;min-height:88px;gap:24px}.concept-a .brand{display:inline-block;width:218px;flex-shrink:0;line-height:0}.concept-a .brand img{width:100%;height:70px;object-fit:contain;mix-blend-mode:multiply}.concept-a .brand-note{font-size:14px;color:#727461;letter-spacing:.02em}.concept-a .header-top .button{min-height:43px;font-size:13px;padding:10px 19px}.concept-a .header-categories{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:9px 0 15px;border-top:1px solid #e9e6d5;overflow:auto;scrollbar-width:thin;scrollbar-color:#d2caac transparent}.concept-a .header-categories a{display:flex;gap:8px;align-items:center;white-space:nowrap;min-height:42px;font-weight:700;font-size:13px;padding:4px 8px;border-radius:8px;transition:background .2s}.concept-a .header-categories a:hover{background:#f1eabd;color:#6453a1}.concept-a .header-categories img{width:23px;height:23px;object-fit:contain}
/* Real pencil illustrations, kept in the margins and tied to content. */
.pencil-mark{display:inline-block;width:92px;height:92px;flex-shrink:0;pointer-events:none;background:url('assets/pencil-marks.webp') var(--mx) var(--my)/300% 300% no-repeat;mix-blend-mode:multiply}.cloud-edge{position:absolute;left:0;bottom:-1px;width:100%;height:50px;z-index:1;pointer-events:none}.concept-a .cloud-edge{fill:white;stroke:none;width:100%;height:50px}
/* Hero: singing, counting and stories emerging from the same open book. */
.sb-hero{position:relative;min-height:650px;background:var(--cream);isolation:isolate;overflow:hidden}.hero-art{position:absolute;inset:0 0 0 28%;z-index:-1}.hero-art img{width:100%;height:100%;object-fit:cover;object-position:right center;mix-blend-mode:multiply}.sb-hero-copy{position:relative;width:48%;padding:96px 0 110px}.sb-hero h1{font-size:66px;line-height:1.06;max-width:590px}.sb-hero h1 span{color:var(--green);position:relative;display:inline-block}.sb-hero h1 span::after{content:"";position:absolute;left:0;right:0;bottom:-10px;height:10px;border-top:3px solid #e9b641;border-radius:48%;transform:rotate(-3deg)}.sb-hero-copy>p{font-size:17px;line-height:1.65;margin:28px 0 26px;max-width:440px;color:#676c58}.hero-actions{display:flex;align-items:center;gap:21px;flex-wrap:wrap}.hero-actions .text-link{font-size:13px}.hero-note{display:flex;align-items:center;gap:7px;margin-top:23px;color:#777661;font-size:12px}.hero-note .pencil-mark{width:49px;height:49px;transform:rotate(8deg)}.hero-spark{position:absolute;left:-50px;top:28px;width:77px;height:77px;transform:rotate(-15deg)}
/* Three tactile entry points, not a duplicate of the category navigation. */
.sb-topics{padding-block:60px 76px;position:relative}.topic-intro{position:relative;text-align:center;max-width:650px;margin:0 auto 38px}.topic-intro h2{font-size:35px}.topic-intro p{margin-top:12px;font-size:15px}.section-mark{position:absolute;left:-105px;top:-15px;width:92px;height:92px;transform:rotate(-15deg)}
/* Shared video details: more generous framing, readable captions and clear action. */
.concept-a .video-card{position:relative;display:block;min-width:0;border-radius:15px;background:white;overflow:hidden;box-shadow:var(--shadow);transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s}.concept-a .video-card:hover{transform:translateY(-5px);box-shadow:0 14px 26px #413b2821}.concept-a .video-cover{position:relative;aspect-ratio:16/9;border-radius:12px;overflow:hidden}.concept-a .video-cover>img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.16,1,.3,1)}.concept-a .video-card:hover .video-cover>img{transform:scale(1.035)}.concept-a .play{position:absolute;inset:0;background:url('assets/play-refined.webp') center/auto 34% no-repeat;filter:drop-shadow(0 3px 5px #57272222);transition:transform .3s}.concept-a .video-card:hover .play{transform:scale(1.12)}.concept-a .duration{position:absolute;bottom:8px;right:8px;font-size:12px;line-height:1.4;padding:3px 5px;background:#252d29de;border-radius:4px;color:white;font-variant-numeric:tabular-nums}.concept-a .video-copy{padding:17px 18px 18px}.concept-a .video-copy p{font-size:12px;font-weight:700;color:var(--green);margin:0 0 7px}.concept-a .video-copy h3{font:700 16px/1.4 Nunito,sans-serif;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--ink)}.card-watch{display:flex;gap:8px;align-items:center;font-size:12px;font-weight:700;color:var(--green);margin-top:16px}.card-watch svg{width:16px;height:16px}
.sb-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:38px;margin-bottom:32px}.sb-heading p{margin-top:14px;font-size:15px;max-width:600px}.sb-heading>.text-link{flex-shrink:0}.round-control{width:46px;height:46px;border:1px solid #e1ded3;background:white;color:var(--ink);border-radius:50%;display:grid;place-items:center;flex-shrink:0;transition:background .2s,transform .2s}.round-control:hover:not(:disabled){background:var(--yellow);transform:translateY(-2px)}.round-control.prev svg{transform:rotate(180deg)}.round-control:disabled{opacity:.38;cursor:default}.rail-controls{display:flex;gap:9px;flex-shrink:0}
/* A filmstrip stage and a compact, selectable queue. */
.sb-popular{position:relative;padding:25px 0 95px}.popular-sun{position:absolute;width:95px;height:95px;right:235px;top:-40px;transform:rotate(12deg)}
/* The page's color peak: a lavender shelf of handmade album cards. */
.sb-new{background:var(--violet);position:relative;padding:100px 0 65px;border-radius:0;isolation:isolate}.sb-new>.cloud-edge{top:-1px;bottom:auto;transform:rotate(180deg)}.sb-new>.wrap{position:relative}.sb-new .sb-heading{align-items:center}.concept-a .sb-new h2,.concept-a .sb-new h2 span{color:white}.concept-a .sb-new .sb-heading p{color:#eee9ff}.sb-new .round-control{background:#ffffff16;border:1px solid #c3b7f1;color:white}.sb-new .round-control:hover:not(:disabled){color:var(--violet-dark)}.new-plane{position:absolute;right:160px;top:-52px;width:80px;height:80px;mix-blend-mode:screen;transform:rotate(-18deg)}.video-rail{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 52px)/3);gap:26px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:thin;scrollbar-color:#b7a6ec #7560cc;scroll-padding:4px;overscroll-behavior-x:contain;padding:25px 5px 26px}.video-rail>.video-card{scroll-snap-align:start;align-self:start}.sb-new .video-card{padding:11px 11px 0;background:#fffefa;border-radius:14px 20px 12px 18px}.sb-new .video-card:nth-child(3n+2){background:#fff0c9;margin-top:15px;transform:rotate(1deg)}.sb-new .video-card:nth-child(3n){background:#eaf6ed;transform:rotate(-1deg)}.sb-new .video-card:hover{transform:translateY(-6px) rotate(0)}.sb-new .video-copy{padding:18px 9px 20px}.sb-new .video-copy h3{font-size:18px}.sb-new .video-card .video-cover{aspect-ratio:1.6}
/* The interest selector is a vertical path with a changing story panel. */
/* Shared discovery: open-book art, editorial copy and two real paths. */
.sb-about{background:#faf3d9;position:relative;padding:80px 0 105px}.sb-about-inner{display:grid;grid-template-columns:1fr 1fr;gap:95px;align-items:center}.about-picture{position:relative;transform:rotate(-4deg);padding:12px;background:white;border-radius:10px 18px 14px 22px;box-shadow:0 16px 30px #9984431b}.about-picture>img{width:100%;aspect-ratio:1.12;object-fit:cover;object-position:right;border-radius:8px}.picture-caption{display:block;text-align:center;font:600 22px/1.4 Fredoka,sans-serif;color:#6c674b;padding:19px 8px 9px}.picture-flower{position:absolute;left:-46px;bottom:-32px;width:120px;height:120px;transform:rotate(12deg)}.sb-about-copy{position:relative}.about-rainbow{position:absolute;right:12px;top:-100px;width:100px;height:100px;transform:rotate(12deg)}.sb-about-copy h2{font-size:38px}.sb-about-copy>p{font-size:15px;line-height:1.8;margin-top:25px}
/* Cartoon shelf: the proportions and edges of a small picture book. */
.sb-stories{position:relative;padding-block:80px 70px}.story-rocket{position:absolute;right:210px;top:38px;width:95px;height:95px;transform:rotate(20deg)}.story-rail{grid-auto-columns:calc((100% - 60px)/3);gap:30px;scrollbar-color:#cab6b2 #f7f0e9;padding-top:10px}.story-rail .video-card{padding:15px 15px 0 24px;background:#f9e4e9;box-shadow:0 10px 22px #67403912;border-radius:4px 16px 16px 5px;isolation:isolate}.story-rail .video-card::before{content:"";position:absolute;left:7px;top:0;bottom:0;width:2px;background:#d6a6b04d;box-shadow:4px 0 3px #d6a6b035}.story-rail .video-card:nth-child(3n+2){background:#e9f0cf}.story-rail .video-card:nth-child(3n){background:#e7e4f7}.story-rail .video-card .video-cover{aspect-ratio:1.45;border-radius:8px 12px 10px 14px}.story-rail .video-copy{padding:18px 5px 24px}.story-rail .video-copy h3{font:600 23px/1.2 Fredoka,sans-serif;-webkit-line-clamp:2}.story-rail .video-copy p{font-size:12px;color:#756463}.story-rail .card-watch{margin-top:19px}.story-all{margin-top:8px}
/* The deep catalog gets a quieter, denser composition. */
.sb-all{background:#f5f7f1;padding-top:68px}.browse-heading{display:flex;align-items:center;justify-content:space-between}.browse-heading>.pencil-mark{width:110px;height:110px;margin-right:35px;transform:rotate(10deg)}.browse-filters{display:flex;flex-wrap:wrap;gap:10px;margin:3px 0 32px}.browse-filters button{border:1px solid #dedfd5;border-radius:9px;background:white;padding:10px 16px;font-size:12px;font-weight:700;color:#5e695c;min-height:44px;transition:background .2s}.browse-filters button[aria-pressed=true]{background:var(--green);border-color:var(--green);color:white}.browse-filters button:hover{background:#e6eddf;color:#355c3e}.sb-all .video-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:30px 22px}.sb-all .video-card{box-shadow:none;background:transparent;border-radius:0;overflow:visible}.sb-all .video-card .video-cover{border-radius:14px}.sb-all .video-copy{padding:13px 2px 0}.sb-all .video-copy h3{font-size:15px}.sb-all .video-copy p{font-size:12px}.sb-all .card-watch{display:none}.sb-all .video-card:hover{transform:translateY(-3px);box-shadow:none}.sb-all .load-more{padding:35px 0 65px;text-align:center}.sb-all .load-more p{font-size:12px;margin:0 0 17px}.concept-a .site-footer{background:var(--cream);padding:55px 0 0;color:var(--ink)}.concept-a .site-footer .footer-top{display:flex;align-items:center;justify-content:space-between;gap:60px}.concept-a .site-footer .brand img{height:70px}.concept-a .site-footer p{font-size:14px;color:#6d715f;margin-top:8px}.concept-a .site-footer nav{display:grid;grid-template-columns:1fr 1fr;gap:14px 45px;font-size:14px;font-weight:700}.footer-book{width:125px;height:125px;transform:rotate(-10deg)}.concept-a .site-footer .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-block:23px;margin-top:36px;border-top:1px solid #e2e1d3;color:#737560;font-size:12px}.concept-a .site-footer small{border:0;padding:0;margin:0;display:inline;color:inherit;font-size:12px}
@media(max-width:1100px){
 .concept-a .wrap{width:calc(100% - 48px)}.concept-a h2{font-size:35px}.concept-a .header-categories{gap:6px}.concept-a .header-categories a{font-size:12px;gap:6px;padding-inline:3px}.concept-a .header-categories img{width:20px;height:20px}.sb-hero{min-height:580px}.sb-hero h1{font-size:56px}.sb-hero-copy{padding-top:78px;width:52%}.hero-art{left:28%}.hero-spark{left:-20px;top:10px;width:60px;height:60px}.sb-hero-copy>p{font-size:15px;max-width:360px}.hero-actions{gap:15px}.hero-actions .text-link{font-size:12px}.popular-sun{right:180px;width:75px;height:75px}.sb-about-inner{gap:55px}.sb-about-copy h2{font-size:33px}.sb-about-copy>p{font-size:14px}.picture-caption{font-size:19px}.story-rail{gap:23px;grid-auto-columns:calc((100% - 46px)/3)}.story-rail .video-copy h3{font-size:20px}.story-rocket{right:130px;top:24px;width:77px;height:77px}.sb-all .video-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.section-mark{left:-50px;width:70px;height:70px}
}
@media(max-width:800px){
 .concept-a .brand-note{display:none}.concept-a .header-categories{justify-content:flex-start;gap:19px}.concept-a .header-categories a{font-size:12px}.sb-hero h1{font-size:48px}.sb-hero-copy{width:56%;padding-block:66px 95px}.sb-hero-copy>p{font-size:14px}.hero-art{left:21%}.hero-note{max-width:270px;font-size:12px}.video-rail{grid-auto-columns:calc((100% - 26px)/2)}.sb-new .video-copy h3{font-size:16px}.sb-about-inner{gap:35px}.sb-about-copy h2{font-size:30px}.sb-about-copy>p{font-size:13px}.story-rail{grid-auto-columns:calc((100% - 26px)/2)}.concept-a .site-footer .footer-top{gap:35px}.footer-book{display:none}.section-mark{left:0;top:-62px;width:64px;height:64px}.popular-sun{right:150px;top:-15px}.new-plane{right:100px;width:62px;height:62px}
}
@media(max-width:600px){
 .concept-a .wrap{width:calc(100% - 36px)}.concept-a{font-size:14px}.concept-a h2{font-size:30px;line-height:1.18}.concept-a .site-header>.header-top{min-height:77px;gap:16px}.concept-a .brand{width:170px}.concept-a .brand img{height:59px}.concept-a .header-top .button{font-size:12px;padding:10px 13px;gap:7px}.concept-a .header-categories{width:100%;padding:8px 18px 10px;gap:19px;border-color:#eae7d6}.concept-a .header-categories a{font-size:12px;min-height:37px}.concept-a .header-categories img{width:21px;height:21px}.sb-hero{min-height:0;padding-bottom:300px;overflow:hidden}.sb-hero-copy{width:100%;padding:38px 0 0;text-align:center}.sb-hero h1{font-size:46px;line-height:1.06;max-width:390px;margin:auto}.sb-hero h1 span::after{height:6px;bottom:-7px;border-width:2px}.sb-hero-copy>p{font-size:14px;line-height:1.7;margin:23px auto 21px;max-width:340px}.hero-actions{justify-content:center;gap:14px}.hero-actions .button{font-size:13px;padding:12px 18px}.hero-actions .text-link{font-size:12px}.hero-note{display:none}.hero-spark{width:43px;height:43px;left:-8px;top:9px}.hero-art{inset:auto 0 0;height:310px}.hero-art img{width:100%;height:100%;object-fit:cover;object-position:right center}.concept-a .cloud-edge{height:33px}.sb-topics{padding-block:42px 52px}.topic-intro{margin-bottom:26px}.topic-intro h2{font-size:27px}.topic-intro p{font-size:12px;max-width:270px;margin:10px auto 0}.section-mark{left:-10px;top:-26px;width:42px;height:42px}.sb-heading{gap:16px;align-items:flex-end;margin-bottom:27px}.sb-heading h2{max-width:290px}.sb-heading p{font-size:12px;line-height:1.7;margin-top:12px}.sb-heading>.text-link{font-size:12px;max-width:77px;gap:4px;line-height:1.4;min-height:40px}.sb-heading>.text-link svg{width:15px}.round-control{width:40px;height:40px}.rail-controls{gap:7px}.sb-popular{padding-block:10px 60px}.popular-sun{right:1px;top:-12px;width:54px;height:54px}.sb-popular>.sb-heading{padding-right:0}.sb-new{padding:62px 0 36px}.sb-new .sb-heading{align-items:flex-end}.sb-new h2{font-size:30px}.sb-new .sb-heading p{max-width:220px}.new-plane{right:9px;top:-35px;width:50px;height:50px}.video-rail{grid-auto-columns:83%;gap:20px;padding-top:17px}.sb-new .video-copy h3{font-size:17px}.sb-new .video-copy{padding:15px 7px 20px}.sb-new .video-card:nth-child(3n+2){margin-top:8px}.concept-a .duration{font-size:12px;padding:2px 4px;bottom:5px;right:5px}.sb-about{padding:40px 0 70px}.sb-about-inner{grid-template-columns:1fr;gap:53px}.about-picture{width:91%;margin:auto;padding:9px;transform:rotate(-3deg)}.about-picture>img{aspect-ratio:1.28}.picture-caption{font-size:19px;padding:16px 2px 8px}.picture-flower{left:-25px;bottom:-28px;width:75px;height:75px}.about-rainbow{width:65px;height:65px;right:0;top:-38px}.sb-about-copy h2{font-size:32px;max-width:320px}.sb-about-copy>p{font-size:14px;line-height:1.8;margin-top:19px}.sb-stories{padding-block:52px 40px}.story-rocket{width:58px;height:58px;top:18px;right:80px}.story-rail{grid-auto-columns:82%;gap:23px;padding-top:5px}.story-rail .video-copy h3{font-size:23px}.story-rail .video-copy{padding:17px 4px 22px}.story-all{font-size:12px!important}.sb-all{padding-top:42px}.browse-heading>.pencil-mark{width:65px;height:65px;margin:0;align-self:flex-start;transform:rotate(12deg)}.browse-heading .sb-heading{margin-bottom:25px;gap:0}.browse-heading h2{font-size:29px;max-width:260px}.browse-heading p{max-width:265px}.browse-filters{flex-wrap:nowrap;overflow:auto;margin:0 -18px 26px;padding:2px 18px 12px;gap:8px;scrollbar-width:thin;scrollbar-color:#9db39c #e8eee1}.browse-filters button{flex-shrink:0;font-size:12px;padding:9px 13px;min-height:40px}.sb-all .video-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:25px 14px}.sb-all .video-copy h3{font-size:13px}.sb-all .video-copy p{font-size:12px}.sb-all .video-copy{padding-top:11px}.sb-all .load-more{padding-block:30px 45px}.sb-all .load-more .button{font-size:13px}.concept-a .site-footer{padding-top:35px}.concept-a .site-footer .footer-top{display:block}.concept-a .site-footer .brand{width:185px}.concept-a .site-footer p{font-size:13px}.concept-a .site-footer nav{margin-top:25px;gap:14px 20px;font-size:13px}.concept-a .site-footer .footer-bottom{margin-top:28px;font-size:12px;gap:10px;padding-block:19px}.concept-a .site-footer small{font-size:12px}.concept-a .preview-nav{font-size:12px}
}
@media(prefers-reduced-motion:reduce){.concept-a *,.concept-a *::before,.concept-a *::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}.concept-a .video-card:hover,.concept-a .video-card:hover .play,.round-control:hover:not(:disabled),.concept-a .button:hover{transform:none}}
/* Carousel position is controlled by arrows, touch and keyboard, without bars. */
.video-rail{scrollbar-width:none;-ms-overflow-style:none}
.video-rail::-webkit-scrollbar{display:none;width:0;height:0}
@media(prefers-reduced-motion:no-preference){.browse-filters button{transition:background-color .2s,color .2s}}
.browse-filters button{border:0;box-shadow:0 3px 12px #66745109}
.new-plane{filter:grayscale(1) invert(1);mix-blend-mode:screen}
.about-picture>img{height:390px;aspect-ratio:auto}.picture-flower{display:none}
.concept-a .video-card:hover .video-copy h3{color:var(--green)}
@media(max-width:1100px){.about-picture>img{height:340px}}
@media(max-width:800px){.about-picture>img{height:320px}}
@media(max-width:600px){.about-picture>img{height:260px}}
/* Latest direction: vivid storybook colors, centered hero and original category art. */
.concept-a{--ink:#194d65;--muted:#536d78;--green:#087c68;--cream:#ffffff;--coral:#e33d60;--violet:#7051d2;--yellow:#ffd94b;--shadow:0 8px 24px #2157750d}
.concept-a .site-header{background:#fff}.concept-a .brand-note{color:#69808b}.concept-a .header-categories{border-color:#e8f0f3}.concept-a .header-categories a:hover{background:#e9f6ff;color:#135e85}
.concept-a .button{background:var(--yellow);color:#194d65;box-shadow:0 6px 16px #e4af3523}.concept-a .button:hover{background:#ffce26;color:#143c4c}.concept-a .text-link{color:var(--green);text-decoration-color:#92cebb}
.sb-hero{background:#a3dffa;min-height:660px}.hero-art{inset:0}.hero-art img{object-fit:cover;object-position:center 54%;mix-blend-mode:normal}.sb-hero-copy{width:54%;max-width:665px;margin:auto;padding:73px 0 240px;text-align:center}.sb-hero h1{font-size:62px;line-height:1.08;max-width:665px;margin:auto;color:#15557b}.sb-hero h1 span{color:#087b6b}.sb-hero h1 span::after{border-color:#ffd04a}.sb-hero-copy>p{color:#25566a;font-size:17px;max-width:460px;margin:28px auto 25px}.hero-actions{justify-content:center}.hero-spark,.hero-note{display:none}
.sb-topic-list{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:20px}.sb-topic-list a{display:flex;flex-direction:column;align-items:center;text-align:center;gap:11px;min-width:0}.topic-portrait{display:grid;place-items:center;width:124px;height:124px;background:var(--topic-color);border-radius:44% 52% 45% 51%;box-shadow:0 7px 18px #2365780b;transition:transform .3s cubic-bezier(.16,1,.3,1)}.topic-portrait .sprite{width:125px;height:125px;mix-blend-mode:multiply}.sb-topic-list strong{font-size:13px;line-height:1.3;color:var(--ink)}.sb-topic-list a>svg{width:16px;height:16px;color:var(--green)}.sb-topic-list a:nth-child(even) .topic-portrait{border-radius:52% 43% 49% 45%;transform:rotate(4deg)}.sb-topic-list a:hover .topic-portrait{transform:translateY(-6px) rotate(-4deg)}.sb-about{background:#e2f7ee}.sb-about-copy>p{color:#487168}.about-picture{box-shadow:0 16px 30px #2b856a17}.picture-caption{color:#348472}.sb-all{background:#f0f7fe}.browse-filters button{color:#3b6b7a;box-shadow:0 4px 13px #4c89a30b}.browse-filters button:hover{background:#dceffa;color:#285b73}.concept-a .site-footer{background:#dcf3ff}.concept-a .site-footer p,.concept-a .site-footer .footer-bottom{color:#527a8a}.concept-a .site-footer .footer-bottom{border-color:#bddfed}
@media(max-width:1100px){.sb-hero{min-height:610px}.sb-hero h1{font-size:53px}.sb-hero-copy{width:61%;padding:69px 0 210px}.sb-hero-copy>p{font-size:15px;max-width:390px}.topic-portrait{width:104px;height:104px}.topic-portrait .sprite{width:106px;height:106px}.sb-topic-list{gap:12px}.sb-topic-list strong{font-size:12px}}
@media(max-width:800px){.sb-hero h1{font-size:48px}.sb-hero-copy{width:68%}.topic-portrait{width:82px;height:82px}.topic-portrait .sprite{width:84px;height:84px}.sb-topic-list{gap:9px}.sb-topic-list strong{font-size:12px}}
@media(max-width:600px){.sb-hero{min-height:0;background:#c8edff;padding-bottom:278px}.sb-hero-copy{width:100%;padding:35px 0 0}.sb-hero h1{font-size:43px;max-width:350px;line-height:1.08}.sb-hero-copy>p{font-size:14px;max-width:320px;margin:23px auto 21px}.hero-art{inset:auto 0 0;height:280px}.hero-art img{object-fit:cover;object-position:center}.hero-art::after{content:"";position:absolute;top:0;left:0;right:0;height:35px;background:linear-gradient(#c8edff,transparent)}.sb-topic-list{display:flex;overflow:auto;gap:19px;scroll-snap-type:x mandatory;scrollbar-width:none;padding:6px 2px 10px}.sb-topic-list::-webkit-scrollbar{display:none}.sb-topic-list a{min-width:87px;gap:10px;scroll-snap-align:start}.topic-portrait{width:86px;height:86px}.topic-portrait .sprite{width:90px;height:90px}.sb-topic-list strong{font-size:12px}.sb-topics{padding-bottom:37px}.concept-a .header-categories{border-color:#e8f0f3}.browse-filters{scrollbar-color:#a9cce0 #e3f1fc}}
@media(prefers-reduced-motion:reduce){.sb-topic-list a:hover .topic-portrait,.sb-topic-list a:nth-child(even) .topic-portrait{transform:none}}
/* Art-directed images: each breakpoint has its own composition. */
.hero-art picture{display:block;width:100%;height:100%}.hero-art img{object-position:center}
@media(min-width:1101px){.sb-hero{min-height:clamp(610px,46vw,830px)}.sb-hero-copy{padding-top:clamp(65px,5.5vw,110px)}}
@media(min-width:601px) and (max-width:1100px){.sb-hero{min-height:660px}.sb-hero-copy{width:66%;padding:55px 0 310px}.hero-art img{object-position:center bottom}}
@media(max-width:600px){.sb-hero{min-height:660px;padding-bottom:0;background:#a9e3ff}.sb-hero-copy{padding:38px 0 310px}.hero-art{inset:0;height:100%}.hero-art img{object-fit:cover;object-position:center bottom}.hero-art::after{display:none}}
/* Module refinement: each shelf has its own reading rhythm. */
.sb-topics .topic-intro{margin-bottom:34px}.sb-topic-list a{padding-bottom:9px}.topic-portrait{box-shadow:0 10px 24px #326a7f0c}.sb-topic-list a>svg{transition:transform .25s}.sb-topic-list a:hover>svg{transform:translateX(4px)}
.video-footer{display:flex;align-items:center;justify-content:space-between;gap:10px}.video-age{display:none}.sb-new .video-age{display:block;font-size:12px;line-height:1.4;color:#5c7778;margin-top:16px;white-space:nowrap}.sb-all .video-footer{display:none}
.sb-popular .sb-heading{margin-bottom:38px}.sb-new .video-card{box-shadow:0 13px 25px #34275b17;padding:11px 11px 0}.sb-new .video-card .video-cover{aspect-ratio:1.57}.sb-new .video-copy{padding:17px 10px 20px}.sb-new .video-copy p{font-size:12px;color:#477969;margin-bottom:8px}.sb-new .video-copy h3{font-size:17px;line-height:1.45}.sb-new .card-watch{font-size:12px;margin-top:16px}.sb-new .video-card:nth-child(3n+2){margin-top:15px}.sb-new .video-card:nth-child(3n+3){margin-top:3px}.sb-new .video-card:hover .card-watch svg{transform:translateX(4px)}
.sb-about{padding-block:84px 105px}.sb-about-copy{padding-block:10px}.about-picture{box-shadow:0 20px 35px #3d967317;transform:rotate(-3deg)}.about-picture>img{height:390px}.picture-caption{padding-block:20px 13px;font-size:23px}
.story-rail{padding:24px 9px 30px;grid-auto-columns:calc((100% - 64px)/3);gap:31px}.story-rail .video-card{overflow:visible;padding:16px 16px 0 23px;box-shadow:0 14px 26px #76568510}.story-rail .video-card:nth-child(3n+1){transform:rotate(-1deg)}.story-rail .video-card:nth-child(3n+2){margin-top:18px;transform:rotate(1deg)}.story-rail .video-card:nth-child(3n+3){transform:rotate(-.6deg)}.story-rail .video-card:hover{transform:translateY(-6px) rotate(0deg);box-shadow:0 18px 34px #76568517}.story-rail .video-card .video-cover{aspect-ratio:1.28;border-radius:10px}.story-rail .video-copy{padding:19px 4px 25px}.story-rail .video-copy h3{font-size:23px;line-height:1.24}.story-rail .video-copy p{font-size:12px;margin-bottom:9px}.book-ribbon{position:absolute;right:26px;top:-4px;z-index:2;width:24px;height:44px;background:#f9c73f;clip-path:polygon(0 0,100% 0,100% 100%,50% 77%,0 100%);filter:drop-shadow(0 3px 3px #9c68201c)}.story-rail .video-card:nth-child(3n+2) .book-ribbon{background:#f596b0}.story-rail .video-card:nth-child(3n) .book-ribbon{background:#84d5c2}.story-rail .video-copy .card-watch{margin-top:20px;font-size:12px}.story-rail .video-card::before{background:#c78ca22b;box-shadow:4px 0 5px #957bc11c}
.sb-all .video-grid{gap:32px 23px}.sb-all .video-card{padding:9px;background:white;border-radius:15px;box-shadow:0 6px 20px #5282a00a;overflow:hidden;transition:box-shadow .25s,transform .25s}.sb-all .video-card .video-cover{border-radius:11px}.sb-all .video-card:hover{box-shadow:0 12px 27px #5088a91a;transform:translateY(-4px)}.sb-all .video-copy{padding:13px 7px 12px}.sb-all .video-copy h3{font-size:15px;line-height:1.5}.sb-all .video-copy p{font-size:12px;margin-bottom:6px}.sb-all .play{background-size:auto 32%}
@media(max-width:1100px){.story-rail .video-copy h3{font-size:20px}.about-picture>img{height:345px}.picture-caption{font-size:20px}.sb-new .video-age{font-size:12px}}
@media(max-width:800px){.sb-about-inner{gap:35px}.about-picture>img{height:335px}.story-rail{grid-auto-columns:calc((100% - 31px)/2)}}
@media(max-width:600px){.sb-topic-list{padding-top:7px}.sb-popular .sb-heading{margin-bottom:28px}.sb-new .video-copy{padding:16px 7px 19px}.sb-new .video-copy h3{font-size:16px}.sb-new .video-age{font-size:12px}.sb-new .card-watch{font-size:12px}.sb-new .video-card .video-cover{aspect-ratio:1.6}.sb-about{padding-block:42px 70px}.sb-about-inner{gap:36px}.about-picture>img{height:265px}.picture-caption{font-size:19px;padding-block:17px 9px}.sb-about-copy{padding-top:10px}.story-rail{grid-auto-columns:85%;gap:24px;padding:17px 5px 26px}.story-rail .video-copy h3{font-size:23px}.story-rail .video-copy{padding:18px 3px 22px}.story-rail .video-card .video-cover{aspect-ratio:1.32}.story-rail .video-card:nth-child(3n+2){margin-top:13px}.book-ribbon{width:21px;height:39px;right:23px}.sb-all .video-grid{gap:18px 13px}.sb-all .video-card{padding:6px;border-radius:12px}.sb-all .video-card .video-cover{border-radius:9px}.sb-all .video-copy{padding:10px 4px 9px}.sb-all .video-copy h3{font-size:12px;line-height:1.45}.sb-all .video-copy p{font-size:12px}.sb-all .play{background-size:auto 38%}}
@media(prefers-reduced-motion:reduce){.story-rail .video-card,.story-rail .video-card:hover,.sb-all .video-card:hover,.sb-topic-list a:hover>svg{transform:none}}

/* Full-page refinement: generous cinema, softer cloud silhouettes and legible cards. */
.concept-a{--paper:#fff;--card-light:0 8px 24px #326b8b0d;--card-lift:0 16px 32px #326b8b19;scrollbar-color:#9cbae0 #eef6ff}
.concept-a .visually-hidden{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}
.concept-a .header-categories{padding-block:10px 16px;scrollbar-width:none}
.concept-a .header-categories::-webkit-scrollbar{display:none}
.concept-a .header-categories a{padding:7px 10px;min-height:46px}
.concept-a .header-categories a:nth-child(3n+1):hover{background:#fff2bb}
.concept-a .header-categories a:nth-child(3n+2):hover{background:#e3f6ef}
.concept-a .header-categories a:nth-child(3n):hover{background:#eee8ff}
.concept-a .cloud-edge{height:86px;display:block}
.cloud-compact{display:none}
.sb-hero>.cloud-edge{height:76px}
.concept-a .sb-heading{margin-bottom:38px}
.concept-a .sb-heading p{line-height:1.7}
.concept-a .round-control{width:48px;height:48px;border:0;background:#e8f5fc;box-shadow:0 5px 14px #3769840b;color:#194d65}
.concept-a .round-control:active:not(:disabled){transform:translateY(1px)}
.concept-a .round-control:disabled{opacity:.4;box-shadow:none}
.concept-a .video-card{border:0;box-shadow:var(--card-light)}
.concept-a .video-card:hover{box-shadow:var(--card-lift)}
.concept-a .video-cover{background:#d7eaf5}
.concept-a .duration{font-size:12px;padding:3px 6px;border-radius:6px;background:#153e53eb}
.concept-a .video-copy h3{line-height:1.45}
.concept-a .video-copy p{font-size:12px;line-height:1.5}
.sb-topics{padding-block:56px 65px}
.sb-topic-list{gap:24px}
.sb-topic-list a{gap:12px;position:relative}
.topic-portrait{width:130px;height:130px;isolation:isolate;box-shadow:0 12px 23px #3f789b0c}
.topic-portrait .sprite{width:128px;height:128px}
.sb-topic-list strong{font-size:14px}
.sb-topic-list a>svg{width:26px;height:26px;padding:5px;background:var(--topic-color);border-radius:50%}

/* The stage itself spans the viewport, including the neighboring slides. */
.sb-popular{width:100%;max-width:none;background:#eaf7ff;padding:100px 0 66px;overflow:hidden}
.sb-popular>.cloud-edge{top:-1px;bottom:auto;transform:rotate(180deg);fill:white}
.cinema-heading{position:relative}
.cinema-heading .sb-heading{align-items:center}
.cinema-heading .popular-sun{right:210px;top:-29px;width:76px;height:76px}
.feature-theatre{display:block;width:100%;outline-offset:-6px!important}
.feature-stage{display:block;position:relative;width:100%;max-width:none;margin:0;padding:18px 0 30px;background:transparent;box-shadow:none;border-radius:0;transform:none;overflow:hidden;touch-action:pan-y}
.cinema-track{display:flex;align-items:center;width:100%;gap:32px;will-change:transform}
.cinema-slide{flex:0 0 min(72vw,960px);min-width:0;position:relative;padding:0;transform:scale(.94);opacity:.72;transition:transform 650ms cubic-bezier(.22,1,.36,1),opacity 450ms ease;isolation:isolate}
.cinema-slide[data-active=true]{transform:scale(1);opacity:1}
.cinema-slide .video-card{padding:12px 12px 0;background:#fff;border-radius:16px;box-shadow:0 16px 32px #3f8baa13;overflow:hidden}
.cinema-slide .video-card{background:#fff}
.cinema-slide .video-card:hover{background:var(--slide-paper)}
.cinema-slide .video-card .video-cover{aspect-ratio:16/9;border-radius:11px}
.cinema-slide .video-card .video-cover>img{object-fit:contain}
.cinema-slide .video-card .video-copy{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:7px 28px;padding:20px 15px 25px}
.cinema-slide .video-card .video-copy p{grid-column:1;margin:0;color:#2e6973;font-size:12px}
.cinema-slide .video-card .video-copy h3{grid-column:1;font-size:22px;line-height:1.35;min-height:2.7em}
.cinema-slide .video-card .video-footer{grid-column:2;grid-row:1/3;align-self:center;display:flex}
.cinema-slide .video-card .card-watch{display:flex;margin:0;min-height:46px;padding:11px 17px;background:white;border-radius:24px;color:#174c66;box-shadow:0 5px 12px #577a850c;font-size:13px;white-space:nowrap}
.cinema-slide .video-card .play{background-size:auto 22%}
.cinema-slide .video-card:hover{transform:none;box-shadow:0 18px 38px #3f8baa1b}
.feature-controls{position:relative;display:flex;align-items:center;justify-content:center;width:max-content;margin:2px auto 0;padding:0;gap:12px}
.feature-controls .round-control{width:52px;height:52px;background:#fff;color:#15557b;box-shadow:0 6px 18px #3e789415}
.feature-controls .round-control:hover{background:var(--yellow)}
.feature-controls .auto-control{position:absolute;left:calc(100% + 18px);margin:0;display:grid;place-items:center;width:44px;height:44px;padding:0;border:0;border-radius:50%;background:transparent;color:#386982;text-decoration:none}
.feature-controls .auto-control:hover:not(:disabled){background:#d2ebfa}
.feature-controls .auto-control svg{width:21px;height:21px;stroke-width:2.5}
.feature-controls .auto-control:disabled{opacity:.45}

/* Album cards: true cover proportions, soft color and a stable caption baseline. */
.sb-new{padding-block:118px 66px}
.sb-new>.cloud-edge{fill:#eaf7ff}
.sb-new .video-card{padding:12px 12px 0;border-radius:15px;background:white;box-shadow:0 14px 28px #30235e20}
.sb-new .video-card:nth-child(3n+2){background:#fff0a9;transform:rotate(1deg);margin-top:18px}
.sb-new .video-card:nth-child(3n){background:#d9f6ef;transform:rotate(-.8deg)}
.sb-new .video-card .video-cover{aspect-ratio:16/9;border-radius:10px}
.sb-new .video-copy{padding:18px 9px 21px}
.sb-new .video-copy h3{font-size:17px;min-height:2.9em}
.sb-new .video-copy p{margin-bottom:8px;font-size:12px}
.sb-new .video-footer{margin-top:18px;align-items:center}
.sb-new .card-watch,.sb-new .video-age{margin:0}
.sb-new .card-watch{font-size:12px;gap:9px}
.sb-new .card-watch svg{background:#ffffffb3;border-radius:50%;width:25px;height:25px;padding:5px}
.sb-new .video-age{font-size:12px;color:#446c74}
.sb-new .round-control{background:#fff;color:#5d42b4;box-shadow:0 5px 14px #35216a19}
.sb-new .round-control:hover:not(:disabled){background:var(--yellow)}
.sb-new .round-control:disabled{background:#e8e1fa}
.new-plane{top:-57px}

/* Interest cards: an illustrated selector, one main video and readable companions. */

/* Picture frame and book covers share a material, without fine outlines. */
.sb-about{padding-block:85px 125px;background:#ddf6ed}
.sb-about-inner{gap:80px}
.about-picture{padding:13px;border-radius:15px;transform:rotate(-2deg);box-shadow:0 18px 32px #2a886917}
.about-picture>img{height:390px;border-radius:10px;object-position:72% center}
.picture-caption{padding:19px 3px 11px;font-size:22px}
.about-rainbow{top:-86px;width:90px;height:90px}
.sb-stories{padding-block:77px 65px}
.story-rail{grid-auto-columns:calc((100% - 70px)/3);gap:34px;padding:20px 9px 36px}
.story-rail .video-card{padding:16px 16px 0 23px;border-radius:6px 16px 16px 6px;background:#ffe2ec;box-shadow:0 12px 25px #965f7d10}
.story-rail .video-card:nth-child(3n+2){background:#e4f2c7}
.story-rail .video-card:nth-child(3n){background:#e9e3ff}
.story-rail .video-card::before{left:8px;width:2px;background:#975e8315;box-shadow:3px 0 5px #7c4f7421}
.story-rail .video-card::after{content:"";position:absolute;bottom:-5px;left:13px;right:5px;height:5px;border-radius:0 0 12px 3px;background:#fff;box-shadow:0 3px 5px #7958770b;z-index:-1}
.story-rail .video-card .video-cover{aspect-ratio:16/10;border-radius:9px}
.story-rail .video-copy{padding:20px 3px 23px}
.story-rail .video-copy p{font-size:12px;color:#5e657c;margin-bottom:9px}
.story-rail .video-copy h3{font-size:23px;line-height:1.28;min-height:2.56em}
.story-rail .video-copy .card-watch{font-size:12px;margin-top:21px}
.book-ribbon{right:26px;top:-5px;width:23px;height:41px}
.story-rocket{top:31px}

/* The directory settles into a calm, consistent card grid. */
.sb-all{padding-top:68px;background:#edf7ff}
.sb-all .video-grid{gap:27px 23px}
.sb-all .video-card{padding:9px;border-radius:15px;box-shadow:0 7px 20px #4e89aa0c}
.sb-all .video-card .video-cover{aspect-ratio:16/9;border-radius:10px}
.sb-all .video-copy{padding:14px 8px 13px}
.sb-all .video-copy h3{font-size:15px;line-height:1.5;min-height:3em}
.sb-all .video-copy p{font-size:12px;line-height:1.5;margin-bottom:7px}
.sb-all .play{background-size:auto 28%}
.browse-filters{gap:10px;margin-bottom:34px;padding-bottom:6px;scrollbar-width:none}
.browse-filters::-webkit-scrollbar{display:none}
.browse-filters button{font-size:12px;border-radius:12px;padding:11px 17px;min-height:44px}
.browse-filters button[aria-pressed=true]:hover{background:#076c5b;color:white}
.concept-a .site-footer{position:relative;background:#d9f0ff;padding-top:46px}
.concept-a .site-footer nav a{min-height:44px;display:flex;align-items:center;transition:color .2s}
.concept-a .site-footer nav a:hover{color:#087c68;text-decoration:underline;text-underline-offset:5px}
.concept-a .site-footer .footer-bottom{margin-top:25px;padding-block:23px}

@media(min-width:1600px){.cinema-slide{flex-basis:1000px}.cinema-track{gap:44px}}
@media(max-width:1100px){
 .concept-a .header-categories a{padding-inline:4px;font-size:12px;gap:6px}
 .sb-topic-list{gap:14px}.topic-portrait{width:104px;height:104px}.topic-portrait .sprite{width:105px;height:105px}.sb-topic-list strong{font-size:12px}
 .cinema-slide{flex-basis:78vw}.cinema-track{gap:24px}.cinema-slide .video-card .video-copy h3{font-size:20px}.cinema-heading .popular-sun{right:165px}
 .sb-about-inner{gap:48px}.about-picture>img{height:340px}.picture-caption{font-size:20px}
 .story-rail{gap:25px;grid-auto-columns:calc((100% - 50px)/3)}.story-rail .video-copy h3{font-size:20px}
}
@media(max-width:800px){
 .concept-a .header-categories a{font-size:12px;padding-inline:8px}.concept-a .cloud-edge{height:64px}
 .sb-topic-list{gap:11px}.topic-portrait{width:80px;height:80px}.topic-portrait .sprite{width:85px;height:85px}.sb-topic-list strong{font-size:12px}
 .sb-popular{padding-top:83px}.cinema-heading .popular-sun{right:137px;top:-25px;width:60px;height:60px}
 .cinema-slide{flex-basis:83vw}.cinema-track{gap:18px}.cinema-slide .video-card .video-copy{gap:6px 12px;padding:17px 9px 19px}.cinema-slide .video-card .video-copy h3{font-size:18px}.cinema-slide .video-card .card-watch{padding:10px 13px;font-size:12px}
 .sb-about-inner{gap:32px}.about-picture>img{height:300px}.picture-caption{font-size:18px}
 .story-rail{grid-auto-columns:calc((100% - 27px)/2);gap:27px}.story-rail .video-copy h3{font-size:22px}
 .sb-all .video-grid{gap:23px 17px}.sb-all .video-copy{padding-inline:5px}.sb-all .video-copy h3{font-size:14px}
}
@media(max-width:600px){
 .cloud-wide{display:none}.cloud-compact{display:block}.concept-a .cloud-edge{height:56px}.sb-hero>.cloud-edge{height:48px}
 .concept-a .header-categories{padding-block:7px 12px;gap:12px}.concept-a .header-categories a{padding:6px;min-height:44px}
 .concept-a .sb-heading{gap:18px;margin-bottom:25px}.concept-a .sb-heading p{font-size:14px;line-height:1.65;margin-top:13px}
 .concept-a .round-control{width:44px;height:44px}.rail-controls{gap:8px}
 .sb-topics{padding-block:44px 35px}.sb-topics .topic-intro{margin-bottom:26px}.topic-intro h2{font-size:29px}.sb-topic-list{gap:20px;padding:8px 1px 13px}.sb-topic-list a{min-width:89px;gap:10px}.topic-portrait{width:87px;height:87px}.topic-portrait .sprite{width:91px;height:91px}.sb-topic-list strong{font-size:12px}.sb-topic-list a>svg{width:24px;height:24px}
 .sb-popular{padding:78px 0 38px}.cinema-heading .sb-heading{display:block}.cinema-heading .sb-heading h2{font-size:31px;max-width:290px}.cinema-heading .sb-heading p{max-width:310px}.cinema-heading .sb-heading>.text-link{font-size:12px;margin-top:6px;max-width:none;white-space:nowrap;gap:10px}.cinema-heading .popular-sun{width:54px;height:54px;right:0;top:-38px}
 .feature-stage{padding:10px 0 23px}.cinema-track{gap:14px}.cinema-slide{flex-basis:87vw}.cinema-slide .video-card{padding:9px 9px 0;border-radius:14px}
 .cinema-slide .video-card .video-cover{border-radius:9px}.cinema-slide .video-card .video-copy{display:block;padding:15px 8px 17px}.cinema-slide .video-card .video-copy p{font-size:12px;margin-bottom:7px}.cinema-slide .video-card .video-copy h3{font-size:17px;line-height:1.4;min-height:2.8em}.cinema-slide .video-card .video-footer{display:none}.cinema-slide .video-card .play{background-size:auto 28%}
 .feature-controls{gap:12px;margin-top:0}.feature-controls .round-control{width:46px;height:46px}.feature-controls .auto-control{left:calc(100% + 10px)}
 .sb-new{padding:82px 0 42px}.sb-new .video-card{padding:10px 10px 0}.sb-new .video-copy{padding:17px 8px 19px}.sb-new .video-copy h3{font-size:17px}.sb-new .video-copy p{font-size:12px}.sb-new .video-age{font-size:12px}.sb-new .card-watch{font-size:12px}.sb-new .video-footer{gap:8px}.new-plane{right:90px;top:-40px;width:56px;height:56px}
 .sb-about{padding:49px 0 83px}.sb-about-inner{gap:39px}.about-picture{width:94%;padding:10px;transform:rotate(-2deg)}.about-picture>img{height:270px}.picture-caption{font-size:19px;padding:17px 3px 9px}.sb-about-copy{padding-top:7px}.sb-about-copy h2{font-size:32px;max-width:340px}.sb-about-copy>p{font-size:14px;line-height:1.8}.about-rainbow{top:-41px;width:60px;height:60px}
 .sb-stories{padding-block:53px 45px}.story-rocket{top:16px;right:81px;width:54px;height:54px}.story-rail{grid-auto-columns:87%;gap:24px;padding:17px 5px 30px}.story-rail .video-card{padding:14px 14px 0 20px}.story-rail .video-card .video-cover{aspect-ratio:16/10}.story-rail .video-copy{padding:18px 3px 22px}.story-rail .video-copy h3{font-size:22px;line-height:1.3}.story-rail .video-copy p{font-size:12px}.story-rail .video-copy .card-watch{margin-top:19px}.book-ribbon{right:24px;width:21px;height:38px}
 .sb-all{padding-top:43px}.browse-heading h2{font-size:30px}.browse-heading>.pencil-mark{width:58px;height:58px}.browse-filters{gap:9px;margin-bottom:24px;padding-bottom:8px}.browse-filters button{font-size:12px;min-height:44px;padding:10px 14px;flex-shrink:0}
 .sb-all .video-grid{gap:20px 13px}.sb-all .video-card{padding:7px;border-radius:13px}.sb-all .video-card .video-cover{border-radius:8px}.sb-all .video-copy{padding:12px 4px 11px}.sb-all .video-copy h3{font-size:13px;line-height:1.5;-webkit-line-clamp:3;min-height:4.5em}.sb-all .video-copy p{font-size:12px;margin-bottom:6px}.sb-all .duration{font-size:12px;padding:2px 4px;right:4px;bottom:4px}.sb-all .play{background-size:auto 35%}.sb-all .load-more{padding-block:30px 45px}
 .concept-a .site-footer{padding-top:35px}.concept-a .site-footer nav{gap:4px 24px;margin-top:23px}.concept-a .site-footer .footer-bottom{font-size:12px;gap:18px}.concept-a .site-footer small{font-size:12px}
}
@media(prefers-reduced-motion:reduce){.cinema-slide,.cinema-slide[data-active=true]{transform:none}.cinema-track{will-change:auto}.concept-a .video-card:hover{transform:none}}

/* Single-row header: logo and the seven category links only. */
.concept-a .site-header .header-row{display:flex;align-items:center;gap:32px;width:min(1400px,calc(100% - 64px));min-height:88px;margin-inline:auto}
.concept-a .site-header .brand{width:190px}
.concept-a .site-header .brand img{height:62px}
.concept-a .site-header .header-categories{display:flex;flex:1;min-width:0;width:auto;margin:0;padding:10px 0;border:0;gap:12px;justify-content:space-between;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
.concept-a .site-header .header-categories a{display:flex;flex-shrink:0;font-size:13px;gap:7px;padding:7px 8px;min-height:44px}
.concept-a .site-header .header-categories img{width:20px;height:20px}
@media(max-width:1200px){
 .concept-a .site-header .header-row{width:calc(100% - 40px);gap:24px;min-height:82px}
 .concept-a .site-header .brand{width:170px}
 .concept-a .site-header .header-categories{justify-content:flex-start;gap:13px}
 .concept-a .site-header .header-categories a{font-size:12px;padding-inline:6px}
}
@media(max-width:600px){
 .concept-a .site-header .header-row{width:calc(100% - 28px);gap:16px;min-height:72px}
 .concept-a .site-header .brand{width:124px}
 .concept-a .site-header .brand img{height:50px}
 .concept-a .site-header .header-categories{gap:12px;padding:8px 0}
 .concept-a .site-header .header-categories a{font-size:12px;gap:6px;padding-inline:5px}
 .concept-a .site-header .header-categories img{width:20px;height:20px}
}

/* Interest discovery: choose a theme, then browse one coherent eight-video shelf. */

/* Restore the original two-beat play-button rhythm. */
@keyframes sb-play-heartbeat{
 0%,45%,100%{transform:scale(1);animation-timing-function:ease-out}
 10%{transform:scale(.91);animation-timing-function:ease-in}
 17%{transform:scale(.98);animation-timing-function:ease-out}
 33%{transform:scale(.87);animation-timing-function:ease-in}
}
@media(prefers-reduced-motion:no-preference){
 .concept-a #main .play{animation:sb-play-heartbeat 2s ease-in-out .5s infinite both;animation-play-state:paused;transform-origin:center;transition:none}
 .concept-a #main .play[data-motion-visible]{animation-play-state:running}
 .concept-a.motion-paused #main .play{animation-play-state:paused}
}
/* A card lifts like a little paper toy, sways once, then stays readable. */
@keyframes sb-card-sway{
 0%,100%{rotate:0deg}
 26%{rotate:calc(var(--card-sway,-1.7deg))}
 52%{rotate:calc(var(--card-sway,-1.7deg) * -.55)}
 76%{rotate:calc(var(--card-sway,-1.7deg) * .24)}
}
@media(hover:hover) and (pointer:fine) and (prefers-reduced-motion:no-preference){
 .concept-a #main .video-card{--card-rest-angle:0deg;--card-sway:-1.7deg;transform:rotate(var(--card-rest-angle));translate:0 0;scale:1;transition:translate .4s cubic-bezier(.34,1.56,.64,1),scale .35s cubic-bezier(.34,1.56,.64,1),box-shadow .3s ease}
 .concept-a #main .video-card:nth-child(even){--card-sway:1.7deg}
 .concept-a #main .sb-new .video-card:nth-child(3n+2){--card-rest-angle:1deg}
 .concept-a #main .sb-new .video-card:nth-child(3n){--card-rest-angle:-.8deg}
 .concept-a #main .story-rail .video-card:nth-child(3n+1){--card-rest-angle:-1deg}
 .concept-a #main .story-rail .video-card:nth-child(3n+2){--card-rest-angle:1deg}
 .concept-a #main .story-rail .video-card:nth-child(3n){--card-rest-angle:-.6deg}
 .concept-a #main .cinema-slide .video-card{--card-sway:-.6deg;transition:translate .4s cubic-bezier(.34,1.56,.64,1),scale .35s cubic-bezier(.34,1.56,.64,1),box-shadow .3s ease,background-color .25s ease}
 .concept-a #main .video-card:hover{transform:rotate(var(--card-rest-angle));translate:0 -7px;scale:1.012;animation:sb-card-sway 620ms ease-out both;box-shadow:0 17px 30px #4478951c}
 .concept-a #main .cinema-slide .video-card:hover{translate:0 -4px;scale:1}
 .concept-a #main .video-card:active{translate:0 -2px;scale:.985;animation:none;transition-duration:.12s}
 .concept-a #main .video-card:focus-visible{translate:0 -4px}
}
@media(hover:none) and (prefers-reduced-motion:no-preference){
 .concept-a #main .video-card:active{scale:.985;transition:scale .12s ease-out}
}
@media(prefers-reduced-motion:reduce){
 .concept-a #main .play,.concept-a #main .video-card{animation:none!important;translate:none;rotate:none;scale:none}
 .concept-a #main .video-card:hover .play{transform:none}
}

/* More real videos in the first shelves, with several cards visible together. */
.cinema-track{gap:26px}
.cinema-slide{flex-basis:min(36vw,540px);transform:scale(.96);opacity:.85}
.cinema-slide[data-active=true]{transform:scale(1);opacity:1}
.cinema-slide .video-card{padding:10px 10px 0}
.cinema-slide .video-card .video-copy{display:block;padding:16px 12px 18px}
.cinema-slide .video-card .video-copy p{font-size:12px;margin-bottom:7px}
.cinema-slide .video-card .video-copy h3{font-size:18px;line-height:1.4;min-height:2.8em}
.cinema-slide .video-card .video-footer{display:none}
.cinema-slide .video-card .play{background-size:auto 27%}
.sb-new .video-card{padding:9px 9px 0}
.sb-new .video-card:nth-child(3n+2),.sb-new .video-card:nth-child(3n+3){margin-top:0}
.sb-new .video-copy{padding:15px 7px 18px}
.sb-new .video-copy h3{font-size:15px;line-height:1.5;min-height:3em}
.sb-new .video-copy p{font-size:12px}
.sb-new .video-footer{margin-top:14px;gap:6px}
.sb-new .card-watch{font-size:12px;gap:6px}
.sb-new .card-watch svg{width:21px;height:21px;padding:4px}
.sb-new .video-age{font-size:12px}
.story-rail{grid-auto-columns:calc((100% - 72px)/4.12);gap:24px}
.story-rail .video-card{padding:13px 12px 0 20px}
.story-rail .video-copy{padding:16px 3px 20px}
.story-rail .video-copy h3{font-size:20px;line-height:1.3;min-height:2.6em}
.story-rail .video-copy .card-watch{margin-top:17px}
@media(max-width:1100px){
 .cinema-slide{flex-basis:46vw}.cinema-track{gap:22px}
 .story-rail{grid-auto-columns:calc((100% - 44px)/3.12);gap:22px}.story-rail .video-copy h3{font-size:19px}
}
@media(max-width:800px){
 .cinema-slide{flex-basis:53vw}.cinema-track{gap:18px}.cinema-slide .video-card .video-copy h3{font-size:17px}.sb-new .video-copy h3{font-size:14px}.sb-new .video-footer{align-items:flex-start;flex-direction:column;gap:7px}
 .story-rail{grid-auto-columns:calc((100% - 38px)/2.6);gap:19px}
}
@media(max-width:600px){
 .cinema-slide{flex-basis:73vw}.cinema-track{gap:14px}.cinema-slide .video-card{padding:8px 8px 0}.cinema-slide .video-card .video-copy{padding:14px 8px 16px}.cinema-slide .video-card .video-copy h3{font-size:15px;line-height:1.45;min-height:2.9em}.sb-new .video-card{padding:7px 7px 0;border-radius:13px}.sb-new .video-copy{padding:13px 4px 16px}.sb-new .video-copy h3{font-size:13px;line-height:1.5;min-height:4.5em;-webkit-line-clamp:3}.sb-new .video-copy p{font-size:12px;margin-bottom:7px}.sb-new .video-footer{margin-top:11px;gap:7px}.sb-new .card-watch{font-size:12px}.sb-new .video-age{font-size:12px}.sb-new .duration{font-size:12px;padding:2px 3px;right:4px;bottom:4px}
 .story-rail{grid-auto-columns:66%;gap:19px}.story-rail .video-card{padding:12px 11px 0 19px}.story-rail .video-copy h3{font-size:19px}.story-rail .video-copy p{font-size:12px}.story-rail .video-copy .card-watch{font-size:12px}.book-ribbon{right:20px;width:18px;height:33px}
}
@media(prefers-reduced-motion:reduce){.cinema-slide{transform:none}}

/* A slim, edge-aligned header and the logo with its clean black outline. */
.concept-a .site-header .header-row{height:60px;min-height:60px;width:calc(100% - 64px);gap:32px}
.concept-a .site-header .brand{display:flex;align-items:center;width:190px;height:46px;overflow:hidden}
.concept-a .site-header .brand img{width:100%;height:auto;max-height:none;object-fit:contain;flex-shrink:0}
.concept-a .site-header .header-categories{flex:0 1 auto;margin:0 0 0 auto;justify-content:flex-start;padding:4px 0;gap:20px}
.concept-a .site-header .header-categories a{min-height:44px}
@media(max-width:1100px){.concept-a .site-header .header-row{width:calc(100% - 40px);gap:24px}.concept-a .site-header .brand{width:164px}.concept-a .site-header .header-categories{gap:12px}}
@media(max-width:600px){.concept-a .site-header .header-row{width:calc(100% - 28px);gap:16px}.concept-a .site-header .brand{width:160px;height:44px}}

/* Hero lettering: rounded display, a handwritten together, and readable support. */
@font-face{font-family:Caveat;src:url('assets/fonts/caveat-variable.ttf') format('truetype');font-weight:400 700;font-display:swap}
.sb-hero h1 .hero-discover em{font-style:normal}
.hero-play-disc{display:none}
@media(min-width:0px){
 .sb-hero-copy{width:min(49vw,740px);padding-top:clamp(45px,4.1vw,82px)}
 .sb-hero h1{font-size:clamp(58px,4.45vw,82px);line-height:1.05;letter-spacing:-.03em;text-shadow:0 2px 0 #ffffff40}
 .sb-hero h1>span{display:block;position:relative;margin:auto;max-width:none;color:#175777}
 .sb-hero h1>span::after{display:none}
 .sb-hero .hero-line-break{display:none}
 .sb-hero h1 .hero-opening{font-size:1em;line-height:1.08}
 .sb-hero h1 .hero-discover{font-size:.74em;line-height:1.25;white-space:nowrap;margin-top:3px}
 .sb-hero h1 .hero-discover em{position:relative;display:inline-block;font-family:Caveat,cursive;font-size:1.44em;font-weight:700;font-style:normal;letter-spacing:-.02em;line-height:.98;color:#17735b;transform:rotate(-3deg);margin-left:4px;text-shadow:none}
 .sb-hero h1 .hero-discover em::after{content:"";position:absolute;left:4%;right:2%;bottom:-9px;height:10px;border-bottom:3px solid #e8b645;border-radius:50%;transform:rotate(-2deg)}
 .sb-hero-copy>p{font-size:clamp(15px,1.05vw,17px);line-height:1.85;color:#376273;margin:26px auto 25px;max-width:480px}
 .hero-description-lead{font-weight:700;color:#28586a}
 .hero-actions{gap:14px;align-items:center}
 .concept-a .sb-hero .hero-watch{display:inline-flex;align-items:center;gap:12px;height:54px;min-height:54px;padding:6px 24px 6px 7px;border-radius:28px;background:#e9543d;color:#fffdf5;font-size:15px;font-weight:700;box-shadow:0 8px 19px #d9583829;transition:transform .25s,background .2s,box-shadow .25s}
 .hero-watch .hero-play-disc{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:#fff8eb;flex-shrink:0;box-shadow:0 2px 5px #aa3d2420}
 .hero-watch .hero-play-disc svg{width:21px;height:21px;fill:#e9543d;stroke:#e9543d;stroke-width:1;transform:translateX(1px)}
 .concept-a .sb-hero .hero-watch:hover{background:#d6412d;transform:translateY(-3px);box-shadow:0 12px 23px #d9583830}
 .concept-a .sb-hero .hero-watch:active{transform:translateY(1px)}
}
@media(min-width:901px) and (max-width:1200px){
 .sb-hero h1{font-size:53px}.sb-hero-copy{width:53%;padding-top:42px}.sb-hero-copy>p{font-size:14px;margin-block:23px 22px}.hero-actions{gap:10px}.concept-a .sb-hero .hero-watch{height:50px;min-height:50px;font-size:14px;padding-right:19px}.hero-watch .hero-play-disc{width:36px;height:36px}
}

/* Extra crayon accents sit in the margins, leaving the videos easy to scan. */
.sb-topics,.cinema-heading,.sb-new>.wrap,.sb-about-inner,.sb-stories,.sb-all>.wrap{position:relative}
.topics-plane,.cinema-notes,.new-stars,.about-bloom,.story-plane,.catalog-bulb{position:absolute;pointer-events:none}
.topics-plane{right:22px;top:36px;width:78px;height:78px;transform:rotate(13deg)}
.cinema-notes{left:-78px;top:36px;width:66px;height:66px;transform:rotate(-13deg)}
.new-stars{left:-86px;top:179px;width:68px;height:68px;filter:grayscale(1) invert(1);mix-blend-mode:screen;transform:rotate(-9deg)}
.about-bloom{left:-66px;bottom:-38px;width:94px;height:94px;transform:rotate(-18deg)}
.story-plane{left:-76px;top:112px;width:65px;height:65px;transform:rotate(9deg)}
.catalog-bulb{right:-64px;top:250px;width:72px;height:72px;transform:rotate(15deg)}
@media(max-width:1350px){.cinema-notes,.new-stars,.about-bloom,.story-plane,.catalog-bulb{display:none}.topics-plane{right:5px;width:64px;height:64px}}
@media(max-width:600px){.topics-plane{right:0;top:20px;width:38px;height:38px;opacity:.8}}
@media(prefers-reduced-motion:reduce){.concept-a .sb-hero .hero-watch:hover{transform:none}}

/* Complete groups of eight, with no neighboring cards peeking into the frame. */
.new-gallery{position:relative;padding:14px 8px 25px;touch-action:pan-y;overflow:visible}
.new-page{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-template-rows:repeat(2,1fr);gap:26px 24px}
.new-page[hidden]{display:none}
.concept-a #main .new-page .video-card{--card-rest-angle:0deg;transform:none;margin-top:0;display:flex;flex-direction:column;align-self:stretch}
.new-page .video-copy{flex:1;display:flex;flex-direction:column}
.new-page .video-footer{padding-top:18px;margin-top:auto}
.sb-new .video-card::before{content:none}

/* Explain a useful role for a parent or caregiver, instead of repeating categories. */
.sb-about-inner{grid-template-columns:minmax(0,1fr) minmax(0,1.04fr);gap:72px}
.about-picture{width:100%;transform:none;padding:12px 12px 0;border-radius:32px 18px 32px 18px}
.about-picture::before{content:none}
.about-picture>img{height:435px;object-position:right center;border-radius:23px 11px 11px 11px}
.picture-caption{padding:19px 8px 22px;font-size:22px}
.sb-about-copy h2{font-size:42px;line-height:1.12;max-width:540px}
.sb-about-copy>p{margin-top:20px;font-size:15px;line-height:1.8;max-width:530px}
.about-rainbow{top:-52px;right:0;width:78px;height:78px}
.together-ideas{list-style:none;display:grid;gap:19px;margin:26px 0 23px;padding:0}
.together-ideas li{display:flex;gap:17px;align-items:center}
.together-ideas .pencil-mark{width:52px;height:52px;flex:0 0 52px}
.together-ideas h3{font:700 17px/1.4 Nunito,sans-serif;color:#1a5369;margin-bottom:3px}
.together-ideas p{font-size:13px;line-height:1.65;color:#3d7064;max-width:425px}
.together-link{min-height:44px;font-size:14px!important}

/* Make the familiar heartbeat play button easier to spot on every video. */
.concept-a #main .video-card .play{background-size:auto 48%}
.concept-a #main .cinema-slide .video-card .play{background-size:auto 40%}

/* A welcome and a clear introduction, before the footer links. */
.footer-welcome{display:grid;grid-template-columns:1fr 1.25fr;gap:80px;align-items:start;padding-bottom:38px}
.concept-a .footer-welcome h2{font-size:34px;line-height:1.2;max-width:350px}
.concept-a .footer-welcome h2 span{color:#087e69;display:block}
.concept-a .site-footer .footer-welcome p{font-size:14px;line-height:1.85;max-width:640px;margin:0;color:#3f6879}
.concept-a .site-footer .footer-welcome p+p{margin-top:10px}
@media(max-width:1100px){
 .new-page{gap:22px 18px}.sb-about-inner{gap:44px}.about-picture>img{height:410px}.sb-about-copy h2{font-size:36px}.together-ideas{gap:15px}.together-ideas li{gap:12px}.footer-welcome{gap:44px}
}
@media(max-width:800px){
 .new-page{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(4,1fr)}.sb-about-inner{grid-template-columns:1fr;gap:40px}.about-picture{max-width:530px}.about-picture>img{height:350px}.sb-about-copy{max-width:580px;margin:auto;width:100%}.footer-welcome{grid-template-columns:1fr;gap:18px}.concept-a .footer-welcome h2{max-width:none}.concept-a .footer-welcome h2 span{display:inline}
}
@media(max-width:600px){
 .new-gallery{padding:10px 3px 16px}.new-page{gap:20px 15px}.new-page .video-footer{padding-top:13px}.sb-about-copy h2{font-size:33px}.about-picture>img{height:290px}.picture-caption{font-size:19px}.together-ideas h3{font-size:16px}.together-ideas p{font-size:13px}.about-rainbow{width:55px;height:55px;top:-35px}.concept-a .footer-welcome h2{font-size:29px}.footer-welcome{padding-bottom:25px}
}

/* A quiet wall area for the copy, with the scene lowered at each art breakpoint. */
.sb-hero{container-type:size;aspect-ratio:auto;height:min(calc(100vw * 801 / 1964 * 11 / 12),70svh);min-height:0;padding:0;background:#f8dfc5;overflow:hidden}
.hero-art{inset:calc(-100vw * 801 / 1964 / 12) 0 auto;width:100%;height:calc(100vw * 801 / 1964);aspect-ratio:auto}
.hero-art picture{display:block;width:100%;height:100%}
.hero-art img{display:block;width:100%;height:100%;object-fit:fill;object-position:center top;mix-blend-mode:normal}
.hero-art::after{display:none}
.sb-hero-copy{position:relative;left:-3vw;width:min(46vw,700px);max-width:none;margin:auto;padding:clamp(24px,5cqh,42px) 0 0;text-align:center}
.sb-hero h1{font-size:clamp(36px,min(4.2vw,10cqh),76px);max-width:none;margin:0}
.sb-hero-copy>p{max-width:460px;font-size:clamp(13px,1.05vw,17px);margin:20px auto;line-height:1.75}
.hero-note,.hero-spark{display:none}
.hero-actions{justify-content:center;gap:14px;flex-wrap:nowrap}
@media(min-width:1101px) and (max-width:1300px){
 .sb-hero-copy{width:48%;padding-top:24px}
 .sb-hero-copy>p{font-size:13px;margin-block:17px}
 .hero-actions{gap:10px}
 .concept-a .sb-hero .hero-watch{height:46px;min-height:46px;gap:8px;padding:5px 15px 5px 5px;font-size:13px}
 .hero-watch .hero-play-disc{width:36px;height:36px}
}
@media(min-width:481px) and (max-width:1100px){
 .sb-hero{height:min(75vw,70svh)}
 .hero-art{inset:0;width:100%;height:calc(100% + clamp(40px,7vw,64px))}
 .hero-art img{object-fit:cover;object-position:center top}
 .sb-hero-copy{left:0;width:calc(100% - 36px);max-width:660px;padding:24px 0 0}
 .sb-hero h1{font-size:clamp(36px,4.8vw,50px)}
 .sb-hero-copy>p{font-size:13px;line-height:1.7;margin:14px auto;max-width:440px}
 .concept-a .sb-hero .hero-watch{height:48px;min-height:48px}
}
@media(min-width:701px) and (max-width:1100px) and (orientation:landscape){.sb-hero{height:min(56.25vw,70svh)}}
@media(min-width:481px) and (max-width:900px){
 .sb-hero-copy{padding-top:20px}
 .sb-hero h1{font-size:clamp(30px,5vw,42px);white-space:nowrap}
 .sb-hero h1>span{display:inline-block}
 .sb-hero h1 .hero-discover{margin:0 0 0 9px}
 .sb-hero-copy>p{font-size:12px;line-height:1.65;margin:12px auto}
 .hero-actions{gap:10px}
 .concept-a .sb-hero .hero-watch{height:44px;min-height:44px;font-size:13px;padding:5px 16px 5px 5px;gap:8px}
 .hero-watch .hero-play-disc{width:34px;height:34px}
}
@media(max-width:480px){
 .sb-hero{height:min(150vw,70svh)}
 .hero-art{inset:0;width:100%;height:calc(100% + 38px)}
 .hero-art img{object-fit:cover;object-position:center top}
 .sb-hero-copy{left:0;width:100%;max-width:440px;padding:clamp(18px,2.8svh,26px) 0 0}
 .sb-hero h1{font-size:clamp(34px,10vw,46px);line-height:1.08;letter-spacing:-.03em}
 .sb-hero h1 .hero-discover{font-size:.76em;line-height:1.3;margin-top:3px}
 .sb-hero h1 .hero-discover em{margin-left:0}
 .sb-hero h1 .hero-discover em::after{bottom:-5px;border-bottom-width:2px}
 .sb-hero-copy>p{font-size:12px;line-height:1.75;margin:18px auto;max-width:340px}
 .hero-description-lead{display:inline}
 .hero-actions{gap:9px}
 .concept-a .sb-hero .hero-watch{height:44px;min-height:44px;padding:5px 16px 5px 5px;gap:8px;font-size:13px}
 .hero-watch .hero-play-disc{width:34px;height:34px}
}
@media(max-width:380px){.hero-actions{gap:7px}.concept-a .sb-hero .hero-watch{font-size:12px;padding-right:12px;gap:6px}}

/* Replacement category mascots follow the navigation symbols. */
.topic-portrait .category-mascot{display:block;width:100%;height:100%;object-fit:contain;mix-blend-mode:normal;padding:5px}
.sb-topic-list a:first-child .category-mascot{padding:7px}

/* Uneven cloud clusters and a color-matched landing into the footer. */
.concept-a .cloud-edge{height:92px}
.concept-a .sb-hero>.cloud-edge{height:82px}
.concept-a .sb-popular>.cloud-edge{transform:rotate(180deg) scaleX(-1)}
.concept-a .sb-about>.cloud-edge{fill:#d9f0ff;transform:scaleX(-1)}
@media(max-width:800px){.concept-a .cloud-edge{height:68px}.concept-a .sb-hero>.cloud-edge{height:54px}}
@media(max-width:600px){.concept-a .cloud-edge{height:56px}.concept-a .sb-hero>.cloud-edge{height:40px}.topic-portrait .category-mascot{padding:3px}.sb-topic-list a:first-child .category-mascot{padding:4px}}

/* One clear watch action, in warm coral. */
.concept-a .sb-hero .hero-watch{height:50px;min-height:50px;padding:6px 22px 6px 7px;gap:10px}
.hero-watch .hero-play-disc{width:36px;height:36px}
@media(max-width:1100px){.concept-a .sb-hero .hero-watch{height:46px;min-height:46px;padding:5px 18px 5px 5px;gap:9px}.hero-watch .hero-play-disc{width:34px;height:34px}}

/* Full, overlapping cloud puffs; a white about section leading into purple. */
.concept-a .sb-about{background:#fff}
.concept-a .sb-about>.cloud-edge{fill:#7050cc}
.concept-a .site-footer{background:#7050cc;color:#fff}
.concept-a .site-footer h2{color:#fff}
.concept-a .site-footer .footer-welcome h2 span{color:#ffe482}
.concept-a .site-footer .footer-welcome p,.concept-a .site-footer .footer-bottom,.concept-a .site-footer small{color:#f3edff}
.concept-a .site-footer .footer-bottom{border-color:#ffffff38}
.concept-a .site-footer nav a:hover{color:#ffe482}
.concept-a .site-footer .brand{display:flex;align-items:center;justify-content:center;width:238px;height:66px;padding:0 10px;overflow:hidden;border-radius:40px;background:#fff;box-shadow:0 8px 20px #3320711a}
.concept-a .site-footer .brand img{width:100%;height:auto;mix-blend-mode:normal}
.concept-a .site-footer .footer-book{filter:invert(1);mix-blend-mode:screen}
.concept-a .site-footer a:focus-visible{outline:3px solid #ffe482;outline-offset:5px}

/* Mobile categories live behind one generous icon button. */
.concept-a .site-header{z-index:20}
.concept-a .site-header .category-toggle{display:none;border:0;padding:10px;width:44px;height:44px;border-radius:14px;background:#eee8ff;color:#6746be;cursor:pointer;flex-shrink:0}
.concept-a .category-toggle svg{display:block;width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8}
.concept-a .category-toggle:focus-visible{outline:3px solid #e9543d;outline-offset:3px}
@media(max-width:1100px){
 .concept-a .site-header .category-toggle{display:block;margin-left:auto}
 .concept-a .site-header .header-categories{display:none;position:absolute;top:calc(100% + 4px);left:12px;right:12px;max-height:calc(100svh - 84px);overflow-y:auto;white-space:normal;padding:12px;margin:0;background:white;border-radius:18px;box-shadow:0 14px 35px #25496226}
 .concept-a .site-header[data-categories-open] .header-categories{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
 .concept-a .site-header .header-categories a{padding:10px 8px;min-height:48px;line-height:1.3;font-size:13px;border-radius:12px;background:#f4f0ff;color:#254d64;gap:8px;white-space:normal}
 .concept-a .site-header .header-categories img{width:20px;height:20px;flex-shrink:0}
 .concept-a .site-header .header-categories a:hover{background:#e8ddff}
 .concept-a .site-header[data-categories-open] .category-toggle{background:#6d4dcc;color:white}
}

/* Each cloud overlaps its adjoining surface to prevent fractional-pixel seams. */
.concept-a{--popular-surface:#eaf7ff;--catalog-surface:#edf7ff;--footer-surface:#7050cc}
.concept-a .sb-popular{background:var(--popular-surface)}
.concept-a .sb-new>.cloud-edge{fill:var(--popular-surface)}
.concept-a .sb-all{position:relative;background:var(--catalog-surface);padding-top:124px}
.concept-a .site-footer{background:var(--footer-surface)}
.concept-a .sb-about>.cloud-edge{fill:var(--footer-surface)}
.concept-a #main>section:not(.wrap){overflow-x:clip}
.concept-a .cloud-edge{left:-1px;width:calc(100% + 2px);max-width:none;bottom:-2px;display:block}
.concept-a .sb-popular>.cloud-edge,.concept-a .sb-new>.cloud-edge,.concept-a .sb-all>.cloud-edge{top:-2px;bottom:auto}
.concept-a .sb-all>.cloud-edge{fill:#fff;transform:rotate(180deg)}
@media(max-width:800px){.concept-a .sb-all{padding-top:100px}}
@media(max-width:600px){.concept-a .sb-all{padding-top:88px}}

/* Frosted white header belongs only to the homepage. */
.concept-a .site-header{position:sticky;top:0;background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:0 4px 20px #25496208}
html:has(body.concept-a){scroll-padding-top:76px}

/* Original artwork, revealed through a generated silhouette matte. */
.concept-a .site-header .brand img,.concept-a .site-footer .brand img{
 mask-image:url('/static/image/brand/logo-matte.webp');mask-mode:luminance;mask-size:100% 100%;mask-repeat:no-repeat;mix-blend-mode:normal
}

/* The header overlays the actual room, rather than reserving a white strip. */
.concept-a #main{margin-top:-60px}
.concept-a .site-header{background:rgba(255,255,255,.58);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:none}
.sb-hero{height:calc(min(calc(100vw * 801 / 1964),70svh) + 40px)}
.hero-art{top:0;height:calc(100vw * 801 / 1964 + 40px)}
.hero-art img{object-fit:cover}
.sb-hero-copy{padding-top:clamp(82px,13cqh,104px)}
.sb-hero h1{font-family:Fredoka,Nunito,sans-serif;font-size:clamp(36px,min(4.4vw,10.4cqh),72px);line-height:1.1;letter-spacing:-.025em;text-shadow:none}
.sb-hero h1 .hero-opening{line-height:1.08}
.sb-hero h1 .hero-discover{font-size:.78em;line-height:1.2;margin-top:5px}
.sb-hero h1 .hero-discover em{font-family:inherit;font-size:1em;font-weight:600;line-height:inherit;color:#c34b37;letter-spacing:inherit;transform:none;margin-left:0}
.sb-hero h1 .hero-discover em::after{display:none}
.sb-hero-copy>p{font-size:clamp(13px,1.05vw,16px);line-height:1.75;margin:18px auto}
.hero-description-lead{font-weight:400;color:inherit}
@media(min-width:481px) and (max-width:1100px){
 .sb-hero{height:calc(min(calc(75vw + 60px),70svh) + 40px)}
 .hero-art{height:calc(100% + 70px)}
 .sb-hero-copy{padding-top:78px}
 .sb-hero h1{font-size:clamp(34px,4.8vw,48px)}
 .sb-hero-copy>p{font-size:13px;margin:14px auto}
}
@media(min-width:701px) and (max-width:1100px) and (orientation:landscape){.sb-hero{height:calc(min(calc(56.25vw + 60px),70svh) + 40px)}}
@media(min-width:481px) and (max-width:900px){
 .sb-hero h1{font-size:clamp(28px,4.5vw,40px)}
 .sb-hero h1 .hero-discover{margin:0 0 0 7px}
 .sb-hero-copy>p{font-size:12px;margin:12px auto}
}
@media(max-width:480px){
 .sb-hero{height:calc(min(calc(150vw + 60px),70svh) + 40px)}
 .hero-art{height:calc(100% + 84px)}
 .sb-hero-copy{padding-top:72px}
 .sb-hero h1{font-size:clamp(34px,9.5vw,43px);line-height:1.08}
 .sb-hero h1 .hero-discover{font-size:.76em;line-height:1.2;margin-top:4px}
 .sb-hero-copy>p{font-size:12px;line-height:1.6;margin:12px auto 14px}
 .concept-a .sb-hero .hero-watch{height:44px;min-height:44px}
}

/* A single brand story on the left; a compact, aligned link column on the right. */
.concept-a .site-footer{padding-top:32px}
.concept-a .site-footer .footer-main{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(180px,1fr);gap:100px;align-items:start}
.footer-intro{max-width:610px}
.concept-a .site-footer .brand{display:block;width:224px;height:auto;padding:0;border-radius:0;background:none;box-shadow:none;overflow:visible}
.concept-a .site-footer .brand img{width:100%;height:auto}
.concept-a .footer-intro h2{font-size:32px;line-height:1.18;margin:16px 0;color:#fff}
.concept-a .footer-intro h2 br{display:none}
.concept-a .footer-intro h2 span{color:#ffe482}
.concept-a .site-footer .footer-intro>p{font-size:16px;line-height:1.8;max-width:570px;margin:0;color:#f5efff}
.concept-a .site-footer .footer-nav{display:flex;flex-direction:column;align-items:flex-start;gap:4px;margin:22px 0 0}
.concept-a .site-footer .footer-nav h3{font:600 22px/1.3 Fredoka,Nunito,sans-serif;color:#ffe482;margin:0 0 14px}
.concept-a .site-footer .footer-nav a{font:700 15px/1.5 Nunito,sans-serif;min-height:40px}
.concept-a .site-footer .footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-top:36px;padding-block:22px}
.concept-a .site-footer .footer-bottom p{font-size:14px;line-height:1.6;color:#f5efff;margin:0;text-align:right}
@media(max-width:800px){
 .concept-a .site-footer .footer-main{grid-template-columns:minmax(0,1fr) 180px;gap:36px}
 .concept-a .footer-intro h2{font-size:29px}
 .concept-a .site-footer .footer-intro>p{font-size:15px}
}
@media(max-width:600px){
 .concept-a .site-footer .footer-main{grid-template-columns:1fr;gap:30px}
 .concept-a .site-footer .brand{width:206px}
 .concept-a .footer-intro h2{font-size:28px}
 .concept-a .site-footer .footer-nav{display:grid;grid-template-columns:1fr 1fr;gap:4px 24px;margin:0}
 .concept-a .site-footer .footer-nav h3{grid-column:1/-1;margin-bottom:7px;font-size:20px}
 .concept-a .site-footer .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;margin-top:24px;padding-block:20px}
 .concept-a .site-footer .footer-bottom p{text-align:left;font-size:13px;max-width:300px}
}
@media(min-width:481px) and (max-width:700px){
 .hero-art{height:calc(100% + 96px)}
 .sb-hero-copy{padding-top:70px}
 .sb-hero-copy>p{margin:10px auto}
}
@media(max-width:480px){
 .hero-art{height:calc(100% + 98px)}
 .sb-hero-copy>p{margin:10px auto 12px}
}

.concept-a .site-footer .footer-bottom small{width:auto;flex-shrink:0}

/* PC keeps the full artwork width; the extra height reveals more wall above. */
@media(min-width:1101px){
 .hero-art{background:url('assets/hero-playroom-v2.webp') center top / 100% auto no-repeat}
 .hero-art picture{height:calc(100% - 40px);transform:translateY(40px)}
 .hero-art img{object-fit:contain;object-position:center top}
}

/* Cover and copy share one horizontal edge on every homepage card. */
.concept-a #main .video-card .video-copy{padding-inline:0}
.concept-a #main .sb-all .video-copy{padding-top:12px;padding-bottom:10px}
.concept-a .together-ideas li{align-items:flex-start}
.concept-a .together-ideas p{max-width:none;font-size:14px;line-height:1.75}
.concept-a .site-footer .footer-bottom p{max-width:660px}
@media(max-width:600px){.concept-a #main .sb-all .video-copy{padding-top:10px}.concept-a .together-ideas p{font-size:13px}.concept-a .site-footer .footer-bottom p{max-width:100%}}

/* Complete story pages: four desktop cards, two tablet cards, one phone card. */
.concept-a #story-rail{display:grid;grid-auto-flow:row;grid-auto-columns:auto;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;padding:20px 9px 28px;overflow:visible;scroll-snap-type:none}
.concept-a #story-rail .video-card[hidden]{display:none}
.concept-a #main #story-rail .video-card{--card-rest-angle:0deg;margin-top:0;align-self:stretch}
@media(min-width:601px) and (max-width:1100px){.concept-a #story-rail{grid-template-columns:repeat(2,minmax(0,1fr))}}
/* Opaque overlap strips join the cloud silhouettes to their adjoining surfaces. */
.concept-a .sb-hero::after,.concept-a .sb-about::after{content:"";position:absolute;left:-1px;right:-1px;bottom:-1px;height:5px;background:#fff;z-index:2;pointer-events:none}
.concept-a .sb-about::after{background:var(--footer-surface)}
.concept-a .sb-popular::before,.concept-a .sb-new::before,.concept-a .sb-all::before{content:"";position:absolute;left:-1px;right:-1px;top:-1px;height:5px;background:#fff;z-index:2;pointer-events:none}
.concept-a .sb-new::before{background:var(--popular-surface)}
@media(max-width:600px){
 .concept-a #story-rail{grid-template-columns:minmax(0,1fr)}
 .concept-a .sb-new .rail-controls{display:none}
 .concept-a .sb-new .sb-heading{display:block}
 .concept-a .sb-new .sb-heading p{max-width:none}
 .concept-a .new-gallery{display:grid;gap:24px;padding:10px 0 16px}
 .concept-a .new-page{grid-template-columns:minmax(0,1fr);gap:24px}
 .concept-a .sb-all .video-grid{grid-template-columns:minmax(0,1fr);gap:22px}
 .concept-a #main .sb-new .video-card,.concept-a #main .sb-all .video-card{padding:10px 10px 0}
 .concept-a #main .sb-new .video-copy h3,.concept-a #main .sb-all .video-copy h3{font-size:17px;line-height:1.45;min-height:0;-webkit-line-clamp:2}
 .concept-a #main .sb-new .video-copy p,.concept-a #main .sb-all .video-copy p{font-size:12px}
 .concept-a #main .sb-new .video-footer{flex-direction:row;align-items:center}
 .concept-a #main .sb-all .video-copy{padding-bottom:17px}
 .concept-a .sb-hero-copy{padding-top:clamp(88px,calc(18cqh - 8px),116px)}
}

.concept-a .sb-topic-list a:first-child .category-mascot{padding:0;border-radius:50%}

/* One compact metadata row pairs each video with its category mascot and age. */
.concept-a #main .video-card .card-meta{display:flex;align-items:center;gap:8px;margin-bottom:9px;min-width:0}
.concept-a #main .video-card .card-category{display:flex;align-items:center;gap:6px;min-width:0;margin:0;font-size:12px;line-height:1.3}
.concept-a #main .category-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.concept-a #main .video-card .card-meta .video-age{display:block;flex-shrink:0;white-space:nowrap;margin-left:auto;font:400 12px/1.3 Nunito,sans-serif;color:#53717c}
.concept-a #main .video-card .video-copy{padding-bottom:16px}
@media(min-width:481px) and (max-width:1100px){
 .concept-a .sb-hero{height:clamp(340px,min(calc(54vw + 30px),52svh),560px)}
 .concept-a .hero-art{height:calc(100% + 24px)}
 .concept-a .hero-art img{object-position:center 60%}
 .concept-a .sb-hero-copy{padding-top:78px}
}
@media(min-width:481px) and (max-width:600px){.concept-a .sb-hero{height:clamp(360px,55svh,440px)}.concept-a .hero-art img{object-position:center 30%}}
@media(min-width:901px) and (max-width:1100px){.concept-a .sb-hero h1{font-size:36px}.concept-a .sb-hero-copy>p{margin:10px auto}}

/* Large PC: remove the extra 40 px wall strip and raise the Hero's bottom by 40 px. */
@media(min-width:1900px){
 .concept-a .sb-hero{height:min(calc(100vw * 801 / 1964),70svh)}
 .concept-a .hero-art{height:calc(100vw * 801 / 1964);background:none}
 .concept-a .hero-art picture{height:100%;transform:none}
 .concept-a .sb-hero-copy{left:-1vw;padding-top:clamp(114px,calc(13cqh + 32px),136px)}
}

/* Compact tablet navigation and a lower copy position within the shorter tablet Hero. */
@media(min-width:601px) and (max-width:1100px){
 .concept-a .sb-hero-copy{padding-top:clamp(98px,calc(18cqh + 16px),118px)}
 .concept-a .sb-new>.cloud-edge{height:92px}
 .concept-a .sb-new{padding-top:124px}
}
@media(max-width:600px){
 .concept-a .site-header,.concept-a .site-header .header-row{height:50px;min-height:50px}
 .concept-a #main{margin-top:-50px}
 .concept-a .site-header .category-toggle,.concept-a .site-header[data-categories-open] .category-toggle{background:transparent;box-shadow:none;border-radius:0;color:#6746be}
 .concept-a .site-header .header-categories{max-height:calc(100svh - 70px)}
 html:has(body.concept-a){scroll-padding-top:66px}
}
/* Fractional clipping now reveals white, never the peach Hero underlay. */
.concept-a .sb-hero{background:#fff}
.concept-a .sb-hero::after{bottom:0;height:8px}

/* Story titles use a quieter reading face at the same size on every device. */
.concept-a #main .sb-stories .video-copy h3{font-family:Nunito,sans-serif;font-size:16px;font-weight:600;line-height:1.5;letter-spacing:0;min-height:3em}

/* A quieter two-color palette for the latest videos. */
.concept-a #main .sb-new .new-page .video-card{background:#fff}
.concept-a #main .sb-new .new-page .video-card:nth-child(even){background:#e5f3ff}
/* Compact, clearly labeled catalog action. */
.concept-a #show-more{display:inline-flex;align-items:center;justify-content:center;gap:16px;min-height:52px;padding:8px 10px 8px 24px;border:0;border-radius:999px;background:#7350cb;color:#fff;font:700 15px/1.3 Nunito,sans-serif;box-shadow:0 4px 0 #5637a4,0 8px 18px #7350cb20;transition:background .2s,transform .2s,box-shadow .2s}
.concept-a #show-more[hidden]{display:none}
.concept-a #show-more .more-icon{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:#ffffff20}
.concept-a #show-more .more-icon svg{width:18px;height:18px;transform:rotate(90deg)}
.concept-a #show-more:hover{background:#6542bd;transform:translateY(-2px);box-shadow:0 6px 0 #5637a4,0 10px 20px #7350cb25}
.concept-a #show-more:active{transform:translateY(2px);box-shadow:0 2px 0 #5637a4}
@media(max-width:600px){
 .concept-a .sb-stories .rail-controls{display:none}
 .concept-a .sb-stories .sb-heading{display:block}
 .concept-a .sb-stories .sb-heading p{max-width:none}
}

/* Homepage reading sizes and natural mobile line breaks. */
@media(max-width:600px){
 .concept-a .cinema-heading .sb-heading h2,.concept-a .cinema-heading .sb-heading p{max-width:none;width:100%;text-wrap:wrap}
 .concept-a .cinema-heading .sb-heading>div{width:100%}
 .concept-a #main .video-card .video-copy h3,.concept-a #main .sb-stories .video-copy h3{font-size:18px;line-height:1.45}
}

@media(max-width:600px){.concept-a .cinema-slide{flex-basis:86vw}}

/* Tablet introduction remains a composed image/text pair. */
@media(min-width:601px) and (max-width:1100px){
 .concept-a .sb-about-inner{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:28px;align-items:center}
 .concept-a .about-picture{width:100%;max-width:none;margin:0;padding:10px 10px 0}
 .concept-a .about-picture>img{height:clamp(260px,38vw,390px)}
 .concept-a .picture-caption{font-size:18px;line-height:1.35;padding:16px 3px 20px}
 .concept-a .sb-about-copy{min-width:0;max-width:none;margin:0;padding:0}
 .concept-a .sb-about-copy h2{font-size:clamp(25px,3.2vw,34px)}
 .concept-a .sb-about-copy>p{font-size:14px;line-height:1.7;margin-top:16px}
 .concept-a .together-ideas{gap:16px;margin:20px 0}
 .concept-a .together-ideas li{gap:10px}
 .concept-a .together-ideas .pencil-mark{width:34px;height:34px;flex-basis:34px}
 .concept-a .together-ideas h3{font-size:16px}
 .concept-a .together-ideas p{font-size:13px;line-height:1.65}
}
@media(min-width:601px){
 .concept-a .site-footer .footer-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 24px;align-items:start}
 .concept-a .site-footer .footer-nav h3{grid-column:1/-1;margin-bottom:10px}
}

/* Selected Hero direction: Quicksand, warm terracotta and clear blue. */
@font-face{font-family:Quicksand;src:url('assets/fonts/quicksand-variable.ttf') format('truetype');font-weight:300 700;font-display:swap}
.concept-a .sb-hero h1{font-family:Quicksand,Nunito,sans-serif;font-weight:700;font-size:clamp(36px,3.6vw,58px);line-height:1.13;letter-spacing:-.045em;color:#263d61;white-space:normal}
.concept-a .sb-hero h1 em{display:block;font:inherit;font-size:.82em;font-style:normal;letter-spacing:-.035em;color:#b65437;margin:8px 0 0;transform:none}
.concept-a .sb-hero h1 em::after{display:none}
.concept-a .sb-hero-copy>p{color:#5b5363;max-width:510px}
.concept-a .sb-hero .hero-watch{background:#426bad;box-shadow:0 7px 16px #426bad20;font-family:Nunito,sans-serif;font-weight:700}
.concept-a .sb-hero .hero-watch:hover{background:#345d9e}
.concept-a .hero-play-disc{background:#fff;color:#426bad;box-shadow:none}
.concept-a .hero-play-disc svg{fill:#426bad;stroke:#426bad}
@media(max-width:1100px){.concept-a .sb-hero h1{font-size:38px}}
@media(max-width:600px){.concept-a .sb-hero h1{font-size:35px}.concept-a .sb-hero-copy>p{font-size:12px}}
/* Only the phone category strip repeats; desktop keeps its seven original links. */
.concept-a .sb-topic-list [data-topic-clone]{display:none}
@media(max-width:600px){
 .concept-a .sb-topic-list{scroll-behavior:auto;scroll-snap-type:none}
 .concept-a .sb-topic-list [data-topic-clone]{display:flex}
 .concept-a .sb-topic-list .category-mascot[src*="category-flame"]{padding:0;border-radius:50%}
 .concept-a .site-header .category-toggle{width:24px;height:24px;padding:0;position:relative}
 .concept-a .site-header .category-toggle::after{content:"";position:absolute;inset:-10px}
 .concept-a .category-toggle:focus-visible{outline-offset:2px;border-radius:3px}
}
/* Purple cloud crowns grow upward out of the new-video section. */
.concept-a .sb-new{--new-cloud-height:92px;background:linear-gradient(to bottom,var(--popular-surface) 0 calc(var(--new-cloud-height) - 4px),var(--violet) calc(var(--new-cloud-height) - 4px))}
.concept-a .sb-new>.cloud-edge{height:var(--new-cloud-height);fill:var(--violet);transform:none}
@media(max-width:600px){.concept-a .sb-new{--new-cloud-height:56px}}
/* Brighter violet action with a clear pressed edge. */
.concept-a #show-more{background:#8650ef;box-shadow:0 4px 0 #6533c7,0 8px 18px #8650ef26}
.concept-a #show-more:hover{background:#7740df;box-shadow:0 6px 0 #6533c7,0 10px 20px #8650ef30}
.concept-a #show-more:active{box-shadow:0 2px 0 #6533c7}
/* Logo owns the first row; the two content headings share the next baseline. */
.concept-a .site-footer .footer-main{row-gap:24px;column-gap:72px}
.concept-a .site-footer .footer-main>.brand{grid-column:1/-1}
.concept-a .footer-intro h2{margin:0 0 18px}
.concept-a .site-footer .footer-nav{margin:0;gap:8px 24px;align-content:start}
.concept-a .site-footer .footer-nav h3{margin:0 0 18px;min-height:38px;display:flex;align-items:center}
@media(min-width:601px) and (max-width:1100px){.concept-a .site-footer .footer-main{grid-template-columns:minmax(0,1.4fr) minmax(210px,1fr);column-gap:32px}.concept-a .site-footer .footer-nav h3{min-height:35px}}
@media(max-width:600px){.concept-a .site-footer .footer-main{row-gap:22px}.concept-a .site-footer .footer-nav h3{min-height:0;margin-bottom:8px}}

.concept-a .sb-new::before{display:none}
.concept-a .sb-new>.cloud-edge{top:0}
@media(min-width:601px){.concept-a .site-footer .footer-nav h3{margin-bottom:10px}}

/* Wide PC: move the artwork upward to reveal 40px more of the lower scene. */
@media(min-width:2000px){
 .concept-a .hero-art picture{transform:translateY(-40px)}
}

/* Pair the logo/navigation heading, then the welcome copy/navigation links. */
.concept-a .site-footer .footer-nav-title{font:600 22px/1.3 Fredoka,Nunito,sans-serif;color:#ffe482;margin:0;align-self:center}
@media(min-width:601px){
 .concept-a .site-footer .footer-main{grid-template-areas:"brand navigation-title" "intro navigation"}
 .concept-a .site-footer .footer-main>.brand{grid-area:brand}
 .concept-a .site-footer .footer-nav-title{grid-area:navigation-title}
 .concept-a .site-footer .footer-intro{grid-area:intro}
 .concept-a .site-footer .footer-nav{grid-area:navigation}
}
@media(max-width:600px){
 .concept-a .site-footer .footer-nav-title{font-size:20px;margin-bottom:-14px}
}

/* Give the featured stage breathing room and a distinct central focal point. */
@media(min-width:601px){
 .concept-a .sb-popular{padding-top:154px;padding-bottom:112px}
 .concept-a .feature-stage{padding-top:46px;padding-bottom:52px}
 .concept-a .cinema-slide{transform:scale(.92);opacity:.85}
 .concept-a .cinema-slide[data-active=true]{transform:scale(1.08);opacity:1;z-index:1}
}
@media(min-width:601px) and (max-width:1100px){
 .concept-a .sb-popular{padding-top:140px;padding-bottom:96px}
 .concept-a .feature-stage{padding-top:38px;padding-bottom:44px}
}
/* Let catalog captions determine their own height, without a reserved empty line. */
.concept-a .sb-all .video-grid{align-items:start}
.concept-a #main .sb-all .video-card{padding-bottom:0}
.concept-a #main .sb-all .video-copy{padding-bottom:10px}
.concept-a #main .sb-all .video-copy h3{min-height:0}
/* The phone category loop runs from one screen edge to the other. */
@media(max-width:600px){
 .concept-a .sb-topic-list{width:100vw;max-width:none;margin-left:calc(50% - 50vw);padding-inline:0}
}
/* Keep the entire paper plane below the cloud overlay. */
.concept-a .sb-new .new-plane{top:0}
@media(max-width:600px){.concept-a .sb-new .new-plane{top:-18px}}
/* Clear, familiar letterforms with restrained reference colors and arch. */
@font-face{font-family:'Nunito Sans';src:url('assets/fonts/nunito-sans-700.ttf') format('truetype');font-weight:700;font-display:swap}
.concept-a .sb-hero h1{font-family:'Nunito Sans',Nunito,sans-serif;font-weight:700;font-size:clamp(46px,4.5vw,72px);line-height:1.07;letter-spacing:0;color:#00558c;padding-top:.16em}
.concept-a .sb-hero h1 .hero-title-line{display:inline-flex;align-items:center;justify-content:center;gap:.16em;max-width:100%;color:inherit;white-space:nowrap}
.concept-a .sb-hero h1 .hero-title-words{display:inline-block;color:inherit;white-space:nowrap}
.concept-a .sb-hero h1 span::after{display:none}
.concept-a .sb-hero h1 .hero-letter{display:inline-block;white-space:pre;color:inherit;-webkit-text-stroke:.035em #fff4cf;paint-order:stroke fill;transform:translateY(calc(-.18em * var(--letter-lift))) rotate(calc(var(--letter-tilt) * .35));transform-origin:center 80%}
.concept-a .sb-hero .hero-title-rays{width:.3em;height:.66em;flex:none;fill:#ffb719;stroke:#fff4cf;stroke-width:2;stroke-linejoin:round;paint-order:stroke fill;overflow:visible}
.concept-a .sb-hero .hero-title-rays-right{transform:scaleX(-1)}
.concept-a .sb-hero h1 em{position:relative;font-family:inherit;font-size:.60em;font-weight:700;line-height:1.18;letter-spacing:0;color:#ff4f2b;width:fit-content;max-width:100%;margin:7px auto 0;transform:none;white-space:nowrap}
.concept-a .sb-hero h1 em .hero-letter{transform:translateY(calc(-.10em * var(--letter-lift))) rotate(calc(var(--letter-tilt) * .2));-webkit-text-stroke:.035em #fff4cf}
.concept-a .sb-hero h1 em::after{content:"";display:block;position:absolute;right:2%;bottom:-.12em;width:20%;height:.16em;border:0;border-top:.035em solid currentColor;border-radius:50%;background:none;transform:rotate(5deg);box-shadow:none}
.concept-a .sb-hero-copy>p{color:#254e72;font-weight:600}
.concept-a .sb-hero .hero-watch{background:#ff593b;box-shadow:0 7px 16px #f45a3626;font-family:'Nunito Sans',Nunito,sans-serif;font-size:16px;font-weight:700}
.concept-a .sb-hero .hero-watch:hover{background:#ee482c}
.concept-a .hero-play-disc svg{fill:#ff593b;stroke:#ff593b}
@media(max-width:1100px){.concept-a .sb-hero h1{font-size:52px}}
@media(max-width:600px){.concept-a .sb-hero h1{font-size:clamp(30px,9vw,40px)}.concept-a .sb-hero h1 em{font-size:.66em}.concept-a .sb-hero .hero-watch{font-size:16px}}

@media(min-width:601px) and (max-width:1100px){.concept-a .sb-hero-copy>p{margin:6px auto;line-height:1.6}}
/* Keep the copy inside the playroom's clear central wall area. */
.concept-a .sb-hero h1{font-size:clamp(36px,3.3vw,56px);line-height:1.12}
.concept-a .sb-hero h1 em{margin-top:5px;font-size:.64em}
.concept-a .sb-hero-copy>p{max-width:430px;font-size:13px;line-height:1.65;margin:12px auto 14px}
@media(min-width:1101px){.concept-a .sb-hero-copy{width:min(40vw,580px)}}
@media(min-width:601px) and (max-width:1100px){
 .concept-a .sb-hero-copy{width:min(56vw,520px)}
 .concept-a .sb-hero h1{font-size:40px}
 .concept-a .sb-hero-copy>p{font-size:12px;max-width:400px;margin:10px auto 12px}
}
@media(max-width:600px){
 .concept-a .sb-hero-copy{width:calc(100% - 8px);max-width:320px}
 .concept-a .sb-hero h1{font-size:clamp(28px,8vw,32px)}
 .concept-a .sb-hero-copy>p{font-size:12px;margin:10px auto 12px}
}

/* Rounded, readable Hero type centered in the available illustration space. */
.concept-a .sb-hero h1{font-family:Quicksand,'Nunito Sans',sans-serif;font-weight:700}
.concept-a .sb-hero>.wrap{height:100%;display:flex;align-items:center}
.concept-a .sb-hero-copy{padding:0}
@media(max-width:600px){.concept-a .sb-hero>.wrap{height:56%;padding-top:60px;box-sizing:border-box}}
/* Swap the content, retaining the white → blue → purple background sequence. */
.concept-a .sb-popular{background:#fff;padding-top:70px;padding-bottom:86px}
.concept-a .sb-popular::before{display:none}
.concept-a .sb-topics{width:100%;max-width:none;background:var(--popular-surface);padding:144px 0 82px}
.concept-a .sb-topics>.cloud-edge{top:-2px;bottom:auto;height:92px;fill:#fff;transform:rotate(180deg) scaleX(-1)}
.concept-a .topic-content{position:relative}
.concept-a .topic-content>.topics-plane{top:-20px}
@media(min-width:601px) and (max-width:1100px){
 .concept-a .sb-popular{padding-top:62px;padding-bottom:74px}
 .concept-a .sb-topics{padding-top:136px;padding-bottom:74px}
}
@media(max-width:600px){
 .concept-a .sb-popular{padding-top:56px;padding-bottom:48px}
 .concept-a .sb-topics{padding-top:96px;padding-bottom:50px}
 .concept-a .sb-topics>.cloud-edge{height:56px}
 .concept-a .topic-content>.topics-plane{top:-14px}
}
/* Center the section copy while reserving the right edge for carousel controls. */
.concept-a .sb-heading{position:relative;display:flex;justify-content:center;text-align:center}
.concept-a .sb-heading>div:first-child{width:100%;min-width:0}
.concept-a .sb-heading h2,.concept-a .sb-heading p{max-width:none;margin-left:auto;margin-right:auto;text-align:center}
.concept-a .sb-heading:has(>.rail-controls){padding-inline:120px}
.concept-a .sb-heading>.rail-controls{position:absolute;right:0;top:50%;transform:translateY(-50%)}
.concept-a .browse-heading{position:relative;display:block}
.concept-a .browse-heading>.pencil-mark{position:absolute;right:0;top:0;margin:0}
.concept-a .sb-new .new-plane{right:4px;top:-44px;z-index:2}
@media(max-width:600px){
 .concept-a .sb-heading:has(>.rail-controls){padding-inline:0}
 .concept-a .browse-heading>.pencil-mark{top:-35px;width:44px;height:44px}
 .concept-a .cinema-heading .popular-sun{top:-48px}
}
/* Bold white headline, placed above the vertical midpoint of the artwork. */
.concept-a .sb-hero h1{color:#fff;font-weight:700}
.concept-a .sb-hero h1 .hero-title-words .hero-letter{-webkit-text-stroke:.03em currentColor;text-shadow:0 1px 2px #344a6899,0 3px 8px #344a6845}
.concept-a .sb-hero h1 em .hero-letter{-webkit-text-stroke:.012em currentColor}
@media(min-width:601px){.concept-a .sb-hero>.wrap{height:70%;padding-top:60px;box-sizing:border-box}}
@media(max-width:600px){.concept-a .sb-hero>.wrap{height:52%;padding-top:60px}}
/* White portrait outlines on the blue category surface. */
.concept-a .sb-topic-list .topic-portrait{box-sizing:border-box;border:4px solid #fff}
/* Stronger white title with a warm yellow shadow; subtitle keeps its scale. */
.concept-a .sb-hero h1{font-size:clamp(40px,3.8vw,64px)}
.concept-a .sb-hero h1 .hero-title-words .hero-letter{-webkit-text-stroke:.055em currentColor;text-shadow:0 3px 0 #efba31,0 5px 10px #dca61f45}
.concept-a .sb-hero h1 em{font-size:.56em}
@media(min-width:601px) and (max-width:1100px){.concept-a .sb-hero h1{font-size:44px}.concept-a .sb-hero h1 em{font-size:.58em}}
@media(max-width:600px){.concept-a .sb-hero h1{font-size:clamp(30px,8.6vw,34px)}.concept-a .sb-hero h1 em{font-size:.60em}.concept-a .sb-topic-list .topic-portrait{border-width:3px}}
@media(min-width:601px){.concept-a .sb-new .new-plane{left:18px;right:auto;top:0}}
/* Compact red Hero action on phones, with a comfortable invisible touch area. */
@media(max-width:600px){
 .concept-a .sb-hero .hero-watch{position:relative;height:36px;min-height:36px;padding:4px 14px 4px 8px;gap:6px;font-size:13px;line-height:1.2;background:#ff593b;color:#fff;box-shadow:0 4px 12px #f45a3626}
 .concept-a .sb-hero .hero-watch:hover{background:#ee482c;color:#fff}
 .concept-a .sb-hero .hero-watch::after{content:"";position:absolute;inset:-4px 0;border-radius:inherit}
 .concept-a .hero-watch .hero-play-disc{width:24px;height:24px;background:transparent;box-shadow:none}
 .concept-a .hero-watch .hero-play-disc svg{width:17px;height:17px;fill:#fff;stroke:#fff}
}

/* Phone featured cards stand out on the white shelf, including during touch. */
@media(max-width:600px){
 .concept-a #main .cinema-slide .video-card{box-shadow:0 10px 26px #91cfff66,0 3px 9px #70baff30}
 .concept-a #main .cinema-slide[data-active=true] .video-card{box-shadow:0 14px 30px #8bcaff80,0 4px 12px #69b8f540}
 .concept-a .feature-stage{touch-action:pan-y;padding-bottom:34px}
 .concept-a .feature-controls .round-control{background:#2586cc;color:#fff;box-shadow:0 5px 13px #65b7ee55}
 .concept-a .feature-controls .round-control:hover{background:#1974b7}
 .concept-a .feature-controls .round-control:active{background:#12659f}
 .concept-a .feature-controls .auto-control{background:#e1f2ff;color:#17689f}
}

/* Coral Hero lettering, with a crisp white offset and stronger curved underline. */
.concept-a .sb-hero h1{color:#ff593b}
.concept-a .sb-hero h1 .hero-title-words .hero-letter{-webkit-text-stroke:.075em currentColor;text-shadow:0 3px 0 #fff,0 4px 1px #fff}
.concept-a .sb-hero h1 em{color:#ff593b}
.concept-a .sb-hero h1 em::after{border-top-width:.10em}
.concept-a .sb-hero .hero-title-rays{fill:#ff593b;stroke:#fff}
.concept-a .sb-hero-copy>p{color:#493c34;font-weight:700}

/* Consistent section-title scale on phones. */
@media(max-width:600px){
 .concept-a #main h2,.concept-a .site-footer .footer-intro h2{font-size:24px;line-height:1.25}
}

/* Category-page typography and loading artwork, without applying it to Hero. */
.concept-a #main .video-card,.concept-a #main .video-card .video-copy h3,.concept-a #main .video-card .video-copy p,.concept-a #main .video-card .video-copy span,.concept-a #main .video-card .duration{font-family:"Helvetica Neue",Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑",Arial,sans-serif}
.concept-a .video-cover:not([data-image-loaded]):not([data-image-error])::before{content:"";position:absolute;inset:0;background:#e4ecee url('/static/image/icons/loading_min.png') center/cover no-repeat}
.concept-a img[data-load]{opacity:0}
.concept-a img[data-image-ready=true]{opacity:1}
.concept-a .video-cover:not([data-image-loaded]) .play{visibility:hidden}

/* Friendly invitations: calm blue wording with a clear, warm point of emphasis. */
.concept-a #main h2{color:#285b78}
.concept-a #main h2 span{color:var(--section-heading-accent,#c84e37)}
.concept-a .sb-popular,.concept-a .sb-all{--section-heading-accent:#c84e37}
.concept-a .sb-topics{--section-heading-accent:#7950bd}
.concept-a .sb-stories{--section-heading-accent:#7950bd}
.concept-a .sb-about{--section-heading-accent:#167a73}
.concept-a #main .sb-new h2{color:#fffaf2}
.concept-a #main .sb-new h2 span{color:#ffe48a}
.concept-a .site-footer .footer-intro h2{color:#fffaf2}
.concept-a .site-footer .footer-intro h2 span{color:#ffe48a}