:root{color-scheme:only light}:root{--ink:#12172c;--blue:#1746ee;--accent:#ffad3b;--coral:#ff7559;--soft:#f1f3ff;--muted:#525a71;--radius:26px}body{background:#fff;font-family:Arial,Helvetica,sans-serif}.wrap{width:min(1240px,calc(100% - 64px))}.header{background:#fff}.header-inner{min-height:90px}nav{font-size:.875rem;gap:22px}.button{border-radius:100px;padding:17px 24px;background:var(--ink);border-color:var(--ink)}.button:hover{background:#263354}.button.small{background:var(--blue);border-color:var(--blue)}.hero{width:100%;margin:0;min-height:760px;background:#1746ee;color:#fff;padding:64px max(32px,calc((100% - 1240px)/2)) 80px;gap:32px;grid-template-columns:1.12fr 1fr;position:relative;overflow:hidden}.hero .eyebrow{color:#e1e9ff;font-size:.8125rem}.hero h1{font-size:clamp(3.5rem,6.6vw,6.5rem);line-height:.98;letter-spacing:-.055em;margin-bottom:30px;position:relative;z-index:2}.hero h1 span{color:var(--accent);display:inline-block;white-space:nowrap;font-size:.96em}.hero .lead{color:#edf2ff;max-width:485px;font-size:1.125rem}.hero .button{background:var(--accent);border-color:var(--accent);color:var(--ink)}.hero .button:hover{background:#ffc46b}.hero .text-link{color:#fff}.hero-notes{color:#dbe5ff;font-size:.875rem;gap:0}.hero-notes span{padding:0 16px;border-right:1px solid #ffffff70}.hero-notes span:first-child{padding-left:0}.hero-notes span:last-child{border:0}.hero-notes span:before{display:none}.hero-visual{border:0;background:none;overflow:visible;height:580px;padding:0;position:relative}.hero-screen{height:510px;transform:rotate(8deg);filter:drop-shadow(0 30px 30px #05115860)}.hero-art{width:140%;max-width:none;height:650px;object-fit:cover;mix-blend-mode:normal;position:absolute;left:-60px;top:-35px;border-radius:0}.visual-label{top:auto;bottom:0;left:15px;right:auto;background:#12172c;color:white;transform:rotate(-4deg);padding:12px 20px;border-radius:6px;z-index:3}.visual-label span:first-child{color:#fff;font-size:.875rem;letter-spacing:.06em}.hero-scroll{position:absolute;bottom:24px;left:max(32px,calc((100% - 1240px)/2));font-size:.8125rem;color:#d9e4ff}.directions{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding-top:36px}.direction{padding:38px;border-radius:24px;display:block;position:relative;transition:transform .25s}.direction:hover{transform:translateY(-5px)}.direction h2{font-size:2.25rem;line-height:1.1}.direction p{max-width:390px;margin:20px 0 26px}.direction .eyebrow{display:block;color:inherit;margin-bottom:20px}.direction-action{font-size:.9375rem;font-weight:700;border-bottom:1px solid currentColor;padding-bottom:5px}.direction-live{background:#dfe8ff}.direction-future{background:var(--accent)}.section{padding-block:100px}.section-heading h2,h2{font-size:clamp(2.4rem,4.5vw,3.5rem);letter-spacing:-.045em;line-height:1.05}.section-heading{margin-bottom:45px}.app-grid{gap:24px}.app-card{padding:32px;border:0;box-shadow:none;background:#f2f4fa;border-radius:26px;transition:transform .25s}.app-card:hover{transform:translateY(-6px)}.app-card.cases{background:#e6edff;border:0}.app-card.words{background:#fff0df}.app-card.sentences{background:#f0eaff}.app-card h3{font-size:2rem}.app-top img{width:100px;height:100px;border-radius:22px}.grade{border:0;font-size:.875rem}.app-status{font-size:.875rem}.app-card .button{background:var(--blue);border-color:var(--blue)}.soon{border:0;background:#ffffffa0;border-radius:100px}.gallery-section{background:var(--ink);color:#fff;border:0}.gallery-section .eyebrow{color:var(--accent)}.gallery-section .section-heading>p,.gallery-hint{color:#c6cce0}.gallery-tabs button{background:#262d46;border-color:#434b66;color:#fff;border-radius:100px}.gallery-tabs button[aria-selected=true]{background:var(--accent);color:var(--ink);border-color:var(--accent)}.screen-open{background:#242c44;border-color:#424b68;border-radius:24px;padding:18px}.screens figcaption span{color:#a6b0cc}.steps article{border-color:var(--ink);position:relative;padding-top:30px}.step-number{font-size:3.2rem;font-weight:800;letter-spacing:-.06em;color:var(--blue);line-height:1;margin-bottom:28px}.steps h3{font-size:1.4rem}.parents{background:#ffad3b;color:var(--ink);border-radius:30px;padding:64px}.parents .eyebrow{color:var(--ink)}.parent-copy>p:not(.eyebrow),.parent-benefits p{color:#513319}.parent-link{color:var(--ink)}.parent-benefits article{border-color:#9f651f}.final-cta{background:#1746ee;border:0;color:#fff;padding:56px;border-radius:28px}.final-cta h2{font-size:2.7rem}.final-cta .eyebrow{color:#fff}.final-cta p:not(.eyebrow){color:#e0e8ff}.final-cta .button{background:var(--accent);border-color:var(--accent);color:var(--ink)}.footer{padding-block:40px}.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s,transform .7s}.reveal.visible{opacity:1;transform:none}
@media(max-width:1100px){.header .button.small{display:none}.hero{min-height:680px;padding-top:54px}.hero-visual{height:520px}.hero-screen{height:460px}.hero-art{height:600px;left:-35px}.app-card{padding:24px}.direction{padding:30px}.direction h2{font-size:2rem}.parents{padding:44px}}
@media(max-width:760px){.wrap{width:calc(100% - 36px)}.header-inner{min-height:100px;padding-block:10px;gap:8px}nav{font-size:.875rem;gap:10px 16px}.hero{width:100%;grid-template-columns:1fr;padding:42px 18px 62px;min-height:0;gap:20px}.hero h1{font-size:clamp(3.3rem,12vw,5.5rem)}.hero .eyebrow{font-size:.75rem;max-width:300px}.hero .lead{font-size:1.0625rem}.hero .actions{gap:20px}.hero .text-link{font-size:.875rem}.hero-visual{height:360px;overflow:hidden;margin-inline:-18px}.hero-screen{height:330px}.hero-art{width:100%;left:0;top:-30px;height:440px;object-fit:cover}.visual-label{left:28px;bottom:20px;padding:10px 12px}.visual-label span:first-child{font-size:.75rem}.hero-scroll{left:18px;bottom:20px}.hero-notes{margin-top:26px}.directions{grid-template-columns:1fr;padding-top:24px;gap:16px}.direction{padding:30px 26px}.direction h2{font-size:2rem}.section{padding-block:64px}.section-heading h2,h2{font-size:2.35rem}.app-grid{gap:18px}.app-card{padding:28px}.app-top img{width:100px;height:100px}.parents{padding:34px 26px;gap:28px}.parents h2{font-size:2.3rem}.parent-benefits h3{font-size:1.0625rem}.final-cta{padding:32px 26px}.final-cta h2{font-size:2.2rem}.screen-open{padding:10px}.steps{gap:30px}.step-number{font-size:2.7rem}.faq{gap:30px}.footer{padding-block:30px}}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.hero-screen{transform:none}}

.hero-art{mask-image:linear-gradient(to right,transparent,#000 18%)}@media(max-width:760px){.hero-art{mask-image:none}}
/* Large characters with a separate, compact text column. */
.hero{grid-template-columns:400px 1fr;gap:72px;padding-top:54px;padding-bottom:80px}
.hero-copy{position:relative;z-index:2;max-width:400px}
.hero h1{font-size:clamp(3.4rem,5vw,5rem);line-height:1;letter-spacing:-.055em;margin-bottom:24px}
.hero .eyebrow{margin-bottom:18px}
.hero .lead{max-width:350px}
.hero .hero-intro{font-size:1.125rem;line-height:1.5;margin-bottom:16px}
.hero .hero-formats{font-size:1.0625rem;line-height:1.55;color:#e0e8ff;margin-bottom:28px}
.hero .actions{flex-direction:column;align-items:flex-start;gap:18px}
.hero-notes{margin-top:28px}
.hero-visual{position:absolute;top:auto;bottom:0;right:max(0px,calc((100% - 1480px)/2));width:clamp(850px,62vw,1050px);height:auto;aspect-ratio:3/2;padding:0;margin:0;overflow:visible;background:transparent;border:0;border-radius:0;box-shadow:none;pointer-events:none}
.hero-art{position:static;width:100%;max-width:100%;height:auto;top:auto;left:auto;bottom:auto;transform:none;object-fit:contain;mask-image:none;border-radius:0}
@media(max-width:1100px) and (min-width:761px){.hero{grid-template-columns:minmax(0,42%) 1fr;gap:40px;padding-top:48px}.hero-copy{max-width:calc(42vw - 40px)}.hero h1{font-size:clamp(2.8rem,5.2vw,3.6rem)}.hero-visual{width:62%;right:-6%;bottom:0}.hero .lead{max-width:100%}.hero-notes{font-size:.8125rem}.hero-notes span{padding-inline:10px}}
@media(max-width:760px){.hero{grid-template-columns:1fr;gap:20px;padding:42px 18px 62px}.hero-copy{max-width:none}.hero h1{font-size:clamp(3.3rem,12vw,5.5rem)}.hero .lead{max-width:400px}.hero .hero-intro{font-size:1.0625rem}.hero .hero-formats{font-size:1rem}.hero .actions{gap:18px}.hero-visual{position:relative;width:calc(100% + 36px);height:auto;top:auto;bottom:auto;right:auto;margin:24px -18px -62px;aspect-ratio:3/2;overflow:visible}.hero-art{height:auto;object-fit:contain;mask-image:none}}

.journey-series{padding-bottom:50px}.journey-app-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}.journey-app-grid .app-card{grid-column:span 2}.journey-app-grid .app-card:nth-child(4){grid-column:2/span 2}.journey-app-grid .app-card:nth-child(5){grid-column:4/span 2}.journey-app-grid .app-card.history{background:#fff0df}.journey-app-grid .app-card.biology{background:#e8f8d9}.journey-app-grid .app-card.geography{background:#e4f3ff}.journey-app-grid .app-card.russian{background:#e6edff}.journey-app-grid .app-card.math{background:#fff5c9}.journey-app-grid .app-card h3{font-size:1.65rem}.journey-app-grid .app-status.upcoming{color:#5d6478}.journey-app-grid .soon{display:block}@media(max-width:900px){.journey-app-grid{grid-template-columns:repeat(2,1fr);gap:18px}.journey-app-grid .app-card,.journey-app-grid .app-card:nth-child(4){grid-column:auto}.journey-app-grid .app-card:nth-child(5){grid-column:1/-1;width:calc((100% - 18px)/2);justify-self:center}}@media(max-width:760px){.journey-app-grid{grid-template-columns:1fr}.journey-app-grid .app-card,.journey-app-grid .app-card:nth-child(4),.journey-app-grid .app-card:nth-child(5){grid-column:auto;width:auto}.journey-app-grid .app-card h3{font-size:1.55rem}}

.atlas-series{padding-bottom:92px}.atlas-app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.atlas-app-grid .app-card{min-height:100%}.atlas-app-grid .app-card.biology{background:#e8f8d9}.atlas-app-grid .app-card.geography{background:#e4f3ff}.atlas-app-grid .app-card.russian{background:#e6edff}.atlas-app-grid .app-card h3{font-size:1.72rem}.atlas-app-grid .button{margin-top:auto}.journey-app-grid.future-two{grid-template-columns:repeat(2,minmax(0,1fr));max-width:840px;margin-inline:auto}.journey-app-grid.future-two .app-card{grid-column:auto}.journey-app-grid.future-two .app-card:nth-child(n){grid-column:auto;width:auto}.daily-posters,.atlas-series,.journey-series{scroll-margin-top:90px}
@media(max-width:900px){.atlas-app-grid{grid-template-columns:1fr 1fr}.atlas-app-grid .app-card:last-child{grid-column:1/-1;width:calc((100% - 18px)/2);justify-self:center}.journey-app-grid.future-two{grid-template-columns:1fr 1fr}}
@media(max-width:760px){.atlas-series{padding-bottom:64px}.atlas-app-grid,.journey-app-grid.future-two{grid-template-columns:1fr}.atlas-app-grid .app-card:last-child{grid-column:auto;width:auto}.atlas-app-grid .app-card h3{font-size:1.55rem}}

/* Daily poster collection: a quiet reward after visitors explore the apps. */
.poster-whisper{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border:1px solid #ffffff4a;border-radius:999px;background:#0d2bad52;color:#fff;font-weight:700;letter-spacing:.01em}
.poster-whisper span{color:var(--accent);font-size:1rem}
.daily-posters{position:relative;overflow:hidden;background:#fff3d8;color:var(--ink);padding:86px 0 96px;border-top:1px solid #f0ddb9;border-bottom:1px solid #ead7b1}
.daily-posters:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 7% 12%,#ff75592e 0 5px,transparent 6px),radial-gradient(circle at 92% 18%,#7255d62c 0 6px,transparent 7px),linear-gradient(115deg,transparent 0 47%,#ffffff42 48% 50%,transparent 51% 100%);background-size:auto,auto,120px 120px;pointer-events:none}
.daily-posters-inner{position:relative}
.daily-posters-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:42px;margin-bottom:20px}
.daily-posters .eyebrow{color:#1746ee;margin-bottom:16px}
.daily-posters h2{font-size:clamp(3.4rem,6vw,5.8rem);line-height:.92;letter-spacing:-.06em;color:#1739a7;margin:0 0 22px}
.daily-posters-lead{font-size:1.25rem;line-height:1.45;font-weight:700;margin:0;max-width:570px;color:#2d3452}
.tear-calendar{width:184px;min-width:184px;background:#fffdf7;border:2px solid #1739a7;border-radius:18px 18px 5px 5px;box-shadow:8px 9px 0 #ffad3b;overflow:hidden;text-align:center;transform:rotate(1.5deg)}
.tear-calendar span{display:block;background:#1739a7;color:#fff;padding:10px 12px;font-size:.875rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em}
.tear-calendar strong{display:block;padding:15px 10px 2px;font-size:2rem;line-height:1;color:#e64a37}
.tear-calendar small{display:block;padding:8px 10px 16px;font-size:.8rem;font-weight:700;color:#5a6175}
.poster-reveal-note{margin:0 0 42px;padding-top:20px;border-top:1px solid #d9bd85;color:#6f5128;font-size:.95rem}
.poster-exhibition{display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:34px 24px}
.poster-card{position:relative;flex:0 1 calc(25% - 18px);min-width:245px;background:#fffaf0;padding:13px 13px 18px;border:1px solid #e1cfaa;box-shadow:0 18px 40px #66471122,0 4px 0 #ffffff inset;transition:transform .25s ease,box-shadow .25s ease;transform:rotate(-1.1deg)}
.poster-card:nth-child(2n){transform:rotate(1deg)}
.poster-card:nth-child(3n){transform:rotate(-.35deg)}
.poster-card:hover,.poster-card:focus-within{transform:translateY(-7px) rotate(0);box-shadow:0 26px 52px #54370f2d,0 4px 0 #ffffff inset;z-index:2}
.poster-preview{display:block;width:100%;padding:0;border:0;background:#f6edda;cursor:zoom-in;aspect-ratio:1086/1573;overflow:hidden}
.poster-preview:focus-visible{outline:4px solid #1746ee;outline-offset:4px}
.poster-preview img{display:block;width:100%;height:100%;object-fit:contain;background:#f6edda}
.poster-card-footer{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;padding:15px 3px 0}
.poster-card-footer>div{min-width:0}
.poster-card-footer>div>span{display:block;color:#755c37;font-size:.72rem;font-weight:800;letter-spacing:.08em;margin-bottom:4px}
.poster-card h3{font-size:1rem;line-height:1.2;margin:0;color:#17203f}
.poster-download{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex-shrink:0;border-radius:999px;background:#1746ee;color:#fff;padding:10px 13px;font-size:.8rem;font-weight:800;transition:transform .2s,background .2s}
.poster-download:hover{background:#0e32bd;transform:translateY(-2px)}
.poster-pin{position:absolute;z-index:3;top:5px;left:50%;width:13px;height:13px;border-radius:50%;background:#e34e3b;box-shadow:0 2px 3px #6a2a22aa,0 0 0 3px #ffffff88;transform:translateX(-50%)}
.poster-tape{position:absolute;z-index:3;top:-7px;left:50%;width:62px;height:22px;background:#ffd77dba;box-shadow:0 2px 4px #6d4f1933;transform:translateX(-50%) rotate(-2deg)}
.poster-spark{position:absolute;color:#e64a37;font-weight:900;pointer-events:none}
.poster-spark-one{right:-16px;top:-42px;font-size:4rem;transform:rotate(14deg)}
.poster-spark-two{left:-32px;top:125px;font-size:1.8rem;color:#5b4acc}
.poster-scroll-hint{display:none}
.poster-lightbox{width:min(960px,calc(100% - 36px));max-height:94vh;border:0;border-radius:24px;padding:18px;background:#fffaf0;color:var(--ink);box-shadow:0 30px 100px #11162d7a}
.poster-lightbox::backdrop{background:#0b1021df;backdrop-filter:blur(4px)}
.poster-lightbox>img{display:block;max-width:100%;width:auto;height:auto;max-height:78vh;margin:auto;object-fit:contain;background:#f7efd9}
.close-poster-lightbox{position:absolute;z-index:2;top:10px;right:10px;width:44px;height:44px;border:0;border-radius:50%;background:#12172ce8;color:#fff;font-size:1.8rem;line-height:1}
.poster-lightbox-bar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 4px 2px}
.poster-lightbox-bar h3{font-size:1.15rem;line-height:1.25;margin:0}
@media(max-width:1040px){.poster-card{flex-basis:calc(33.333% - 16px);min-width:220px}.daily-posters{padding-block:72px}.poster-spark{display:none}}
@media(max-width:760px){.poster-whisper{max-width:calc(100% - 36px);white-space:normal;line-height:1.35;padding:7px 11px;bottom:12px}.daily-posters{padding:58px 0 64px}.daily-posters .wrap{width:100%}.daily-posters-heading{align-items:flex-start;padding-inline:18px;gap:18px}.daily-posters h2{font-size:3.7rem}.daily-posters-lead{font-size:1.05rem}.tear-calendar{width:132px;min-width:132px;box-shadow:5px 6px 0 #ffad3b}.tear-calendar span{font-size:.68rem;padding:8px}.tear-calendar strong{font-size:1.45rem;padding-top:12px}.tear-calendar small{font-size:.7rem;padding-bottom:11px}.poster-reveal-note{margin:0 18px 28px;padding-top:17px}.poster-exhibition{justify-content:flex-start;flex-wrap:nowrap;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding-inline:18px;gap:18px;padding:6px 18px 30px;-webkit-overflow-scrolling:touch}.poster-exhibition::-webkit-scrollbar{height:8px}.poster-exhibition::-webkit-scrollbar-thumb{background:#d1a95b;border-radius:999px}.poster-card,.poster-card:nth-child(n){flex:0 0 min(78vw,320px);min-width:0;scroll-snap-align:center;transform:none}.poster-card:hover,.poster-card:focus-within{transform:translateY(-4px)}.poster-scroll-hint{display:block;margin:4px 18px 0;color:#745626;font-size:.85rem;font-weight:700}.poster-card-footer{display:block}.poster-download{width:100%;margin-top:12px}.poster-lightbox{padding:12px;border-radius:18px}.poster-lightbox>img{max-height:70vh}.poster-lightbox-bar{align-items:stretch;flex-direction:column}.poster-lightbox-bar .poster-download{margin:0}.close-poster-lightbox{top:7px;right:7px}}

@media(min-width:761px){.poster-card{flex-basis:calc(33.333% - 16px)}}