/* BrainyWorkbook design study 02. App-owned logo and Nunito wordmark.
   Manrope display/body; native buildless implementation. Variance 8 / motion 5 / density 3.
   Shape rule: 12px controls, 24px feature surfaces, circles for steps and diagrams.
   Coral brand accent; sage and butter support semantic learning illustrations. */
@font-face{font-family:Manrope;src:url(assets/manrope.ttf) format('truetype');font-weight:200 800;font-display:swap}
@font-face{font-family:Nunito;src:url(assets/nunito.ttf) format('truetype');font-weight:200 1000;font-display:swap}
:root{--page:#fbfbf8;--white:#fff;--ink:#183632;--muted:#65716b;--coral:#e85d4c;--action:#be4032;--action-hover:#a7352a;--sage:#e5eee4;--green:#376b4b;--butter:#f7e8ba;--peach:#fcf0e9;--line:#dfe4dc;--radius:24px;color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--page);color:var(--ink);font:15px/1.65 Manrope,system-ui,sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{cursor:pointer}button,a,summary{-webkit-tap-highlight-color:transparent}button{color:inherit}a{color:inherit;text-decoration:none}p,h1,h2,h3,h4,figure{margin:0}img{max-width:100%;height:auto;display:block}button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--action);outline-offset:5px}[hidden]{display:none!important}::selection{background:#f7c3b7;color:var(--ink)}h1,h2,h3,h4{line-height:1.1;letter-spacing:-.055em;font-weight:800}h2{font-size:clamp(32px,4.1vw,56px)}.wrap{max-width:1328px;margin:auto;padding-inline:48px}.section-space{padding-block:85px}.skip{position:fixed;top:-80px;left:20px;padding:12px 24px;background:var(--ink);color:white;z-index:100}.skip:focus{top:12px}.button{display:inline-flex;align-items:center;justify-content:center;gap:35px;background:var(--action);color:white;border:0;border-radius:12px;padding:17px 25px;font-size:15px;font-weight:750;min-height:56px;white-space:nowrap;box-shadow:0 4px 0 #833a2110;transition:background .2s,transform .2s,box-shadow .2s}.button:hover{background:var(--action-hover);transform:translateY(-2px);box-shadow:0 7px 18px #973f2420}.button:active{transform:translateY(0)}.button span{font-size:22px;line-height:1;font-weight:400}.button.small{font-size:13px;padding:11px 18px;min-height:43px;gap:20px;border-radius:10px}.text-link{display:inline-flex;align-items:center;gap:22px;font-weight:750;font-size:14px;min-height:44px}.text-link:after{content:'';position:absolute}.text-link:hover{text-decoration:underline;text-underline-offset:7px}.text-link span{font-size:22px;transition:transform .2s}.text-link:hover span{transform:translate(2px,-2px)}
.site-header{height:78px;position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--page) 94%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid transparent;transition:border-color .2s}.site-header.scrolled{border-color:var(--line)}.nav-wrap{height:78px;max-width:1440px;margin:auto;padding-inline:48px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:inline-flex;align-items:center;gap:10px;font:900 23px/1 Nunito,system-ui,sans-serif;letter-spacing:-.04em;white-space:nowrap}.brand>span>span{color:var(--coral)}.brand img{border-radius:31%;flex-shrink:0}.desktop-nav{display:flex;gap:34px;font-size:13px;font-weight:650}.desktop-nav a{position:relative;padding-block:14px}.desktop-nav a:after{content:'';position:absolute;bottom:8px;left:0;width:0;height:2px;background:var(--coral);transition:width .2s}.desktop-nav a:hover:after{width:100%}.nav-actions{display:flex;align-items:center;gap:24px}.login{font-size:13px;font-weight:750}.login:hover{text-decoration:underline}.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;border-radius:10px;place-content:center;gap:5px}.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:transform .2s}.menu-toggle[aria-expanded=true] span:first-child{transform:translateY(3.5px) rotate(45deg)}.menu-toggle[aria-expanded=true] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}.mobile-nav{background:var(--page);border-bottom:1px solid var(--line);padding:16px 24px 25px;display:grid;gap:5px;box-shadow:0 15px 20px #1836320a}.mobile-nav a{padding:10px;font-weight:650}
.hero{min-height:570px;display:grid;grid-template-columns:1.05fr 1fr;align-items:center;gap:30px;padding-top:32px;padding-bottom:62px}.hero-copy{position:relative;z-index:2;padding-bottom:20px}.eyebrow{font-size:12px;font-weight:750;letter-spacing:.015em;display:flex;align-items:center;gap:9px;margin-bottom:26px}.little-spark{color:var(--coral);font-size:24px;line-height:1}.hero h1{font-size:clamp(44px,4.75vw,65px);line-height:1.075;letter-spacing:-.06em}.hero h1>span{color:var(--action);white-space:nowrap}.hero-description{max-width:410px;font-size:17px;line-height:1.75;color:var(--muted);margin-top:25px}.hero-actions{display:flex;align-items:center;gap:27px;margin-top:30px}.hero-scene{height:470px;position:relative;display:grid;place-items:center;isolation:isolate}.scene-circle{position:absolute;width:420px;max-width:100%;aspect-ratio:1;border-radius:50%;background:var(--butter);z-index:-2;top:34px;right:0}.scene-props{position:absolute;width:116%;max-width:none;left:-8%;top:0;height:100%;object-fit:contain;z-index:-1}.hero-sheet{width:88%;max-width:445px;background:var(--white);padding:23px 26px 0;transform:rotate(4deg);border:1px solid #e7e7df;border-radius:4px;box-shadow:3px 5px 0 #f2f0e8,4px 6px 0 #d8d8ce,8px 22px 28px #484b3221;transition:transform .5s cubic-bezier(.22,1,.36,1);position:relative}.hero-scene:hover .hero-sheet{transform:rotate(1deg) translateY(-4px)}.sheet-heading{display:flex;align-items:center;gap:10px;font-weight:750;font-size:12px}.sheet-heading img{border-radius:31%}.sample-tag{margin-left:auto;font-size:10px;letter-spacing:.03em;font-weight:650;border:1px solid var(--line);border-radius:6px;padding:3px 9px;color:var(--muted)}.sheet-title{padding:25px 0 20px;border-bottom:1px solid var(--line)}.sheet-title h2{font-size:30px;line-height:1.13;letter-spacing:-.04em}.sheet-title>span{display:block;color:var(--muted);font-size:11px;margin-top:9px}.sheet-concept{padding:20px 0;display:flex;gap:11px;align-items:center;border-bottom:1px solid var(--line)}.status-symbol{width:27px;height:27px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;font-size:15px;font-weight:700}.status-symbol.success{background:var(--sage);color:var(--green)}.status-symbol.focus{background:#ffe3d9;color:var(--action)}.status-label{font-size:10px;color:var(--green);font-weight:750;display:block;margin-bottom:4px}.focus-concept .status-label{color:var(--action)}.sheet-concept h3{font-size:14px;letter-spacing:-.025em}.mini-fractions{margin-left:auto;display:flex;gap:5px}.disc{display:block;aspect-ratio:1;border-radius:50%;background:#e7efe4;position:relative;border:1px solid currentColor;color:var(--green);overflow:hidden}.disc.half{background:conic-gradient(var(--green) 0 50%,#e7efe4 50%)}.disc.half:after{content:'';position:absolute;width:1px;height:100%;left:50%;top:0;background:var(--green)}.disc.quarter{background:conic-gradient(var(--green) 0 25%,#e7efe4 25%)}.disc.quarter:before,.disc.three-quarters:before{content:'';position:absolute;top:50%;width:100%;height:1px;background:currentColor}.disc.quarter:after,.disc.three-quarters:after{content:'';position:absolute;left:50%;width:1px;height:100%;background:currentColor}.mini-fractions .disc{width:31px}.fraction-pair{font-size:30px;letter-spacing:-.02em;color:var(--action);margin-left:auto;white-space:nowrap}.fraction-pair small{font-size:13px;color:var(--muted);padding:0 3px}.sheet-next{display:flex;align-items:center;justify-content:space-between;font-size:11px;font-weight:750;padding:19px 0;color:var(--green)}.sheet-next>span:last-child{font-size:22px;line-height:1}.sheet-next:hover>span:first-child{text-decoration:underline}.scene-note{position:absolute;bottom:-3px;right:5px;font:italic 16px/1.3 Nunito,sans-serif;transform:rotate(-7deg);color:var(--green);border-bottom:2px solid #81a08a;padding-bottom:5px}
.promise-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#f3f5ee}.promise-inner{display:grid;grid-template-columns:1fr 1fr 1.2fr;padding-block:26px;gap:25px}.promise-inner p{display:flex;align-items:center;gap:17px}.promise-inner p+p{border-left:1px solid #dce3d8;padding-left:35px}.promise-number{font-size:27px;font-weight:800;letter-spacing:-.06em;line-height:1;min-width:42px}.promise-inner strong{font-size:12px;display:block;font-weight:750}.promise-inner small{display:block;font-size:11px;color:var(--muted);margin-top:4px}.message-icon{width:39px;height:32px;border:1.5px solid var(--ink);border-radius:10px 10px 10px 0;display:flex;justify-content:center;align-items:center;font-size:27px;line-height:0;flex-shrink:0}
.section-heading{max-width:880px;margin-bottom:42px}.section-heading>p:last-child{font-size:16px;color:var(--muted);max-width:620px;margin-top:20px;line-height:1.75}.section-count{font-size:12px;color:var(--green);font-weight:750;margin-bottom:18px}.journey-section .section-heading h2{font-size:clamp(32px,3.7vw,50px)}.journey-tabs{display:grid;grid-template-columns:1fr 1fr 1.17fr;gap:24px;margin-bottom:26px}.journey-tabs button{display:flex;align-items:center;gap:14px;border:0;border-bottom:3px solid var(--line);background:transparent;text-align:left;padding:15px 0 21px;font-size:15px;font-weight:750;transition:border-color .2s}.journey-tabs button[aria-selected=true]{border-color:var(--coral)}.step-number{display:grid;place-items:center;width:39px;height:39px;border-radius:50%;background:#edf0e9;color:#65716b;font-size:17px;flex-shrink:0}.journey-tabs button[aria-selected=true] .step-number{background:var(--coral);color:#fff}.journey-tabs small{display:block;color:var(--muted);font-size:11px;font-weight:500;margin-top:5px}.step-arrow{margin-left:auto;margin-right:10px;font-size:20px;color:#9faa9e}.journey-stage{display:grid;grid-template-columns:190px 1fr;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:0 15px 40px #27392807;min-height:450px}.learner{border-right:1px solid var(--line);padding-right:30px;display:flex;flex-direction:column;align-items:flex-start}.learner-avatar{width:66px;height:66px;display:grid;place-items:center;border-radius:50%;background:var(--butter);font-size:28px;font-weight:800;position:relative;margin-bottom:17px}.learner-avatar>span{position:absolute;font-size:22px;color:var(--coral);top:-9px;right:-9px}.learner strong{font-size:20px;letter-spacing:-.04em}.learner div>span:not(.learner-avatar>span){display:block;font-size:11px;color:var(--muted);margin-top:4px}.learner small{display:inline-block;font-size:10px;background:#f1f4ed;border-radius:5px;padding:3px 7px;margin-top:10px;color:#576854}.learner>p{font-family:Nunito,sans-serif;font-size:19px;line-height:1.4;font-style:italic;color:var(--green);margin-top:45px;transform:rotate(-4deg)}.stage-panel{padding-left:32px;min-width:0;animation:panel-in .35s ease}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:24px}.panel-heading h3{font-size:22px;letter-spacing:-.04em}.report-date{font-size:10px;color:var(--muted);white-space:nowrap}.report-concepts{display:grid;grid-template-columns:1fr 1fr;gap:24px}.concept{padding:18px 20px;border-radius:14px}.concept-strength{background:#f0f5ed}.concept-focus{background:#fff1eb}.concept-kicker{display:flex;align-items:center;gap:8px;color:var(--green);font-size:11px;font-weight:750;margin-bottom:12px}.concept-kicker>span{width:20px;height:20px;display:grid;place-items:center;border-radius:50%;background:var(--green);color:white;font-size:12px}.concept-focus .concept-kicker{color:var(--action)}.concept-focus .concept-kicker>span{background:var(--action)}.concept h4{font-size:21px;letter-spacing:-.04em}.concept>p{font-size:11px;color:var(--muted);margin-top:9px}.fraction-models,.comparison-model{display:flex;align-items:flex-start;gap:28px;margin-top:20px}.fraction-models>div,.comparison-model>div{display:grid;justify-items:center;gap:6px;font-size:24px;font-weight:600}.fraction-models .disc,.comparison-model .disc{width:56px}.disc.thirds{background:conic-gradient(var(--coral) 0 66.6667%,#fff1eb 66.6667%);color:var(--action)}.disc.thirds:before{content:'';position:absolute;inset:0;background:conic-gradient(transparent 0 119deg,var(--action) 119deg 120deg,transparent 120deg 239deg,var(--action) 239deg 240deg,transparent 240deg 359deg,var(--action) 359deg)}.disc.three-quarters{background:conic-gradient(var(--coral) 0 75%,#fff1eb 75%);color:var(--action)}.comparison-model{gap:17px}.compare-sign{font-size:26px;align-self:flex-start;line-height:56px;color:var(--action)}.next-step{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:21px;margin-top:23px}.next-label{font-size:10px;font-weight:750;color:var(--green)}.next-step p{font-size:12px;color:var(--muted);margin-top:4px}.next-step p strong{color:var(--ink)}.round-arrow{display:grid;place-items:center;width:42px;height:42px;border:0;border-radius:50%;background:var(--sage);font-size:24px;flex-shrink:0;transition:transform .2s}.round-arrow:hover{transform:translateX(4px);background:#d4e5d1}.panel-intro{font-size:13px;color:var(--muted);max-width:620px;line-height:1.75;margin-top:-6px;margin-bottom:20px}.test-results>div{display:flex;gap:15px;align-items:center;padding-block:17px;border-top:1px solid var(--line)}.question-number{font-size:12px;color:var(--muted)}.test-results strong{font-size:14px}.test-results div>div>span{display:block;font-size:10px;color:var(--muted);margin-top:3px}.result-pill{font-size:10px;margin-left:auto;padding:4px 9px;background:var(--sage);color:var(--green);border-radius:6px}.result-pill.revisit{background:#ffe9df;color:var(--action)}.subtle-button{background:transparent;border:0;font-size:12px;font-weight:750;padding:10px 0;color:var(--ink);display:inline-flex;align-items:center;gap:18px;white-space:nowrap;min-height:44px}.subtle-button:hover{text-decoration:underline;text-underline-offset:5px}.subtle-button span{font-size:20px}.practice-layout{display:grid;grid-template-columns:1fr 1fr;gap:35px}.question-topic{font-size:10px;font-weight:750;color:var(--action)}.practice-main h4{font-size:20px;letter-spacing:-.03em;margin-top:9px}.answer-options{display:flex;gap:12px;margin-top:20px}.answer-options button{border:1.5px solid var(--line);border-radius:12px;background:var(--page);min-height:95px;min-width:105px;padding:12px 20px;display:grid;place-items:center;gap:8px;transition:background .2s,border-color .2s,transform .2s}.answer-options button>span{font-size:38px;line-height:1;font-weight:650}.answer-options small{font-size:9px;color:var(--muted)}.answer-options button:hover{border-color:var(--green);transform:translateY(-2px)}.answer-options button[aria-pressed=true]{background:var(--sage);border-color:var(--green)}.answer-options button.wrong{background:var(--peach);border-color:var(--coral)}.practice-insight{border-left:1px solid var(--line);padding-left:28px}.insight-symbol{font-size:30px;color:var(--coral);line-height:1;display:block;margin-bottom:12px}.practice-insight strong{font-size:14px;line-height:1.5;display:block;letter-spacing:-.025em}.practice-insight p{font-size:11px;color:var(--muted);margin-top:10px;line-height:1.8}.answer-feedback{margin-top:25px;border-top:1px solid var(--line);padding-top:18px;min-height:68px;display:flex;align-items:center;gap:20px;justify-content:space-between;font-size:12px;line-height:1.7;color:var(--muted)}.answer-feedback[data-state=correct]{color:var(--green)}.answer-feedback[data-state=wrong]{color:var(--action)}.demo-disclosure{font-size:10px;max-width:750px;color:var(--muted);margin-top:17px;line-height:1.7}
.play-section{padding-top:30px}.play-section .section-heading h2>span{color:var(--green)}.play-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:25px}.duel-card,.coin-card{border-radius:var(--radius);overflow:hidden;position:relative;display:flex;flex-direction:column}.duel-card{background:#e2eada}.coin-card{background:#f9edc9}.play-copy{padding:34px 36px 0;position:relative;z-index:1}.feature-name{font-size:11px;font-weight:800;display:inline-block;margin-bottom:16px;letter-spacing:.015em}.play-copy h3{font-size:36px;line-height:1.13;letter-spacing:-.05em}.play-copy p{font-size:13px;max-width:400px;line-height:1.8;color:#536354;margin-top:16px}.duel-art{position:relative;max-width:95%;margin:0 auto;flex:1;display:flex;align-items:flex-end}.duel-art img{width:100%;max-height:360px;object-fit:contain;object-position:bottom}.vs-sticker{position:absolute;top:48%;left:46%;transform:rotate(-9deg);width:46px;height:46px;border-radius:10px;display:grid;place-items:center;font-size:17px;font-weight:800;background:var(--page);box-shadow:0 4px 8px #21322712}.card-link{margin:0 36px;padding-block:20px;display:flex;justify-content:space-between;align-items:center;border-top:1px solid #c6d3bf;font-size:12px;font-weight:750}.card-link span{font-size:20px}.card-link:hover{text-decoration:underline;text-underline-offset:4px}.coin-card>img{width:95%;margin:8px auto 0;max-height:310px;object-fit:contain;flex:1}.coin-note{display:flex;align-items:flex-start;gap:10px;margin:0 36px;padding:20px 0 22px;border-top:1px solid #e9dba9;font-size:11px;color:#675d3f}.tiny-dot{display:block;width:7px;height:7px;border-radius:50%;background:var(--action);margin-top:6px;flex-shrink:0}.coin-note strong{color:var(--ink);font-weight:750}.parents-section{display:grid;grid-template-columns:1fr 1fr;gap:120px;align-items:center;padding-top:45px}.parent-copy{max-width:500px}.parent-icon{display:flex;justify-content:center;align-items:center;width:47px;height:39px;border:2px solid var(--green);border-radius:12px 12px 12px 0;font-size:32px;color:var(--green);line-height:0;margin-bottom:24px}.parent-copy h2{font-size:44px}.parent-copy>p{font-size:15px;line-height:1.8;color:var(--muted);max-width:400px;margin-top:22px}.parent-copy .text-link{margin-top:22px}.message-preview{background:#edf2e9;padding:26px;border-radius:24px;transform:rotate(2deg);position:relative}.message-preview:before{content:'';position:absolute;z-index:-1;inset:16px -12px -12px 15px;border:1px solid #e0e7d9;border-radius:24px;transform:rotate(-5deg)}.message-top{display:flex;gap:12px;align-items:center;margin-bottom:19px}.message-top img{border-radius:31%}.message-top strong{display:block;font-size:13px}.message-top div>span{font-size:10px;color:var(--muted);display:block;margin-top:2px}.message-dots{margin-left:auto;font-size:25px;line-height:0}.message-body{background:var(--white);border-radius:0 14px 14px 14px;padding:24px;font-size:12px;line-height:1.8}.message-body>p{margin-bottom:16px}.message-body strong{font-size:11px;color:var(--green)}.message-body p:nth-of-type(3) strong{color:var(--action)}.message-rule{height:1px;background:var(--line);margin-bottom:16px}.message-sample{display:block;font-size:9px;color:var(--muted);padding-top:3px}
.start-section{padding-top:25px;padding-bottom:80px}.start-panel{border-radius:var(--radius);background:#e8eee1;display:grid;grid-template-columns:1.8fr 1fr;gap:50px;padding:52px}.start-copy h2{font-size:38px;line-height:1.16}.start-copy>p{font-size:13px;color:#566750;margin-top:18px;margin-bottom:25px}.start-copy>small{font-size:10px;color:#596954;display:block;max-width:360px;margin-top:15px;line-height:1.7}.launch-note{border-left:1px solid #cdd8c6;padding-left:43px;align-self:center}.launch-label{font-size:10px;font-weight:750;display:block;margin-bottom:20px}.launch-note>strong{font-size:48px;letter-spacing:-.055em;display:block;font-weight:800;line-height:1}.launch-note>strong span{font-size:11px;font-weight:600;display:block;letter-spacing:0;margin-top:11px}.launch-note>p{font-size:12px;color:#53634e;margin-top:22px;line-height:1.8}.launch-foot{display:block;font-size:10px;color:#53634e;margin-top:24px;line-height:1.8}.faq-section{display:grid;grid-template-columns:1fr 1.6fr;gap:90px;padding-top:15px;padding-bottom:105px}.faq-section h2{font-size:40px}.faq-section>div>p{font-size:14px;color:var(--muted);margin-top:20px}.faq-section .text-link{margin-top:25px}.faq-list{border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{display:flex;align-items:center;justify-content:space-between;list-style:none;padding:23px 0;cursor:pointer;font-size:14px;font-weight:750;gap:20px;line-height:1.65}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary>span{font-size:23px;font-weight:400;color:var(--muted);line-height:1;transition:transform .2s}.faq-list details[open] summary>span{transform:rotate(45deg)}.faq-list details[open] summary{padding-bottom:12px}.faq-list details>p{font-size:13px;color:var(--muted);line-height:1.85;padding-bottom:24px;max-width:95%}.site-footer{border-top:1px solid var(--line);background:#f1f4eb;padding-top:52px}.footer-main{display:flex;justify-content:space-between;gap:60px}.footer-main>div>p{font-size:17px;line-height:1.6;margin-top:22px;font-weight:600;letter-spacing:-.025em}.footer-nav{display:grid;grid-template-columns:1fr 1fr;gap:70px}.footer-nav>div{display:flex;flex-direction:column;gap:11px;font-size:12px}.footer-nav span{font-size:10px;font-weight:750;color:var(--muted);margin-bottom:5px}.footer-nav a:hover,.footer-bottom a:hover{text-decoration:underline;text-underline-offset:4px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #dbe2d3;padding-top:22px;margin-top:48px;font-size:10px;color:var(--muted)}.footer-bottom>div{display:flex;gap:25px}.preview-note{padding-top:18px;padding-bottom:22px;font-size:9px;color:var(--muted)}
@keyframes panel-in{from{opacity:.4;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}@keyframes hero-in{from{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}.hero-copy{animation:hero-in .7s cubic-bezier(.22,1,.36,1) both}.hero-scene{animation:hero-in 1s .12s cubic-bezier(.22,1,.36,1) both}.js-reveal .reveal{opacity:.3;translate:0 22px;transition:opacity .7s ease,translate .7s cubic-bezier(.22,1,.36,1)}.js-reveal .reveal.is-visible{opacity:1;translate:0 0}
@media(min-width:1440px){.hero{min-height:620px}.hero-scene{height:500px}.hero-sheet{max-width:460px;padding-top:27px}.sheet-concept{padding-block:24px}.hero h1{font-size:65px}.scene-circle{width:450px}}
@media(max-width:1100px){.wrap{padding-inline:32px}.nav-wrap{padding-inline:32px;gap:20px}.desktop-nav{gap:22px}.brand{font-size:20px}.hero{gap:15px;min-height:530px}.hero h1{font-size:49px}.hero-description{font-size:15px}.hero-actions{gap:18px}.hero-scene{height:420px}.hero-sheet{width:91%;padding:20px 21px 0}.sheet-title h2{font-size:26px}.sheet-concept h3{font-size:12px}.mini-fractions{gap:4px}.mini-fractions .disc{width:24px}.fraction-pair{font-size:25px}.scene-circle{width:365px}.promise-inner{gap:18px}.promise-inner p+p{padding-left:22px}.promise-inner p{gap:13px}.journey-stage{grid-template-columns:150px 1fr;padding:25px}.learner{padding-right:20px}.stage-panel{padding-left:25px}.concept{padding:17px}.concept h4{font-size:18px}.panel-heading{align-items:flex-start}.panel-heading h3{font-size:20px}.panel-heading .report-date{font-size:9px}.report-concepts{gap:16px}.journey-tabs{gap:18px}.journey-tabs button{font-size:13px;gap:10px}.journey-tabs small{font-size:10px}.step-arrow{display:none}.play-copy{padding:30px 28px 0}.play-copy h3{font-size:30px}.parents-section{gap:70px}.parent-copy h2{font-size:38px}.start-panel{padding:38px;gap:35px}.start-copy h2{font-size:32px}.launch-note{padding-left:30px}.faq-section{gap:60px}.coin-note{margin-inline:28px}.card-link{margin-inline:28px}}
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p{font-size:13px}.feature-name{font-size:11px;margin-bottom:14px}.duel-art{margin-top:12px;max-width:96%}.duel-art img{max-height:360px}.vs-sticker{width:40px;height:40px;font-size:15px}.card-link{font-size:11px;margin-inline:28px;padding-block:17px}.coin-card>img{max-height:290px;width:90%;margin-top:5px}.coin-note{font-size:11px}.parents-section{grid-template-columns:1fr;gap:35px;padding-top:8px}.parent-copy h2{font-size:34px}.parent-icon{margin-bottom:18px}.parent-copy>p{font-size:14px}.parent-copy .text-link{margin-top:15px}.message-preview{max-width:440px;width:calc(100% - 12px);justify-self:center;transform:rotate(1deg)}.message-body{font-size:12px;padding:23px}.message-top{margin-bottom:16px}.message-preview:before{inset:12px -7px -8px 10px}.start-section{padding-top:10px;padding-bottom:54px}.start-panel{grid-template-columns:1fr;padding:29px;gap:30px}.start-copy h2{font-size:30px;line-height:1.16}.start-copy>p{font-size:13px}.start-copy>small{font-size:9px}.launch-note{border-left:0;border-top:1px solid #cdd8c6;padding:24px 0 0}.launch-label{margin-bottom:16px}.launch-note>strong{font-size:40px}.launch-note>strong span{font-size:10px;display:inline-block;margin-left:12px}.launch-note>p{font-size:11px;margin-top:15px}.launch-note>p br{display:none}.launch-foot{font-size:10px;margin-top:15px}.launch-foot br{display:none}.faq-section{grid-template-columns:1fr;gap:27px;padding-top:0}.faq-section h2{font-size:33px}.faq-section>div>p{margin-top:12px;font-size:13px}.faq-section>div>p br{display:none}.faq-section .text-link{margin-top:10px}.faq-list summary{font-size:12px;padding-block:20px;gap:20px}.faq-list details>p{font-size:12px}.site-footer{padding-top:35px}.footer-main{flex-direction:column;gap:32px}.footer-main>div>p{font-size:16px;margin-top:18px}.footer-nav{grid-template-columns:1fr 1fr;gap:25px}.footer-nav>div{font-size:11px;gap:11px}.footer-nav span{font-size:10px}.footer-bottom{flex-direction:column;font-size:9px;margin-top:32px;gap:15px}.footer-bottom>div{gap:24px}.preview-note{font-size:8px;line-height:1.8;padding-top:17px}.js-reveal .reveal{translate:0 12px}}
@media(max-width:370px){.wrap{padding-inline:19px}.nav-wrap{padding-inline:19px}.hero h1{font-size:34px}.hero-sheet{width:88%;padding-inline:18px}.hero-scene{height:410px}.hero-actions{gap:16px}.hero-actions .text-link{font-size:11px}.journey-stage{padding:16px}.concept{padding:13px 10px}.fraction-models{gap:10px}.fraction-models .disc,.comparison-model .disc{width:31px}.compare-sign{line-height:31px}.play-copy{padding-inline:25px}.start-panel{padding:25px}.start-copy h2{font-size:27px}.brand{font-size:19px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.js-reveal .reveal{opacity:1;translate:none}.hero-scene:hover .hero-sheet{transform:rotate(4deg)}}
@media(prefers-reduced-transparency:reduce){.site-header{background:var(--page);backdrop-filter:none}}

/* Readable concept rows on phones: each diagram stays beside its explanation. */
@media(max-width:700px){
 .report-concepts{grid-template-columns:1fr;gap:12px}
 .concept{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:12px;padding:17px 15px}
 .concept-kicker{grid-column:1;font-size:10px;margin-bottom:9px}
 .concept h4{grid-column:1;font-size:17px;line-height:1.25}
 .concept>p{grid-column:1;font-size:10px;min-height:0;margin-top:8px}
 .fraction-models,.comparison-model{grid-column:2;grid-row:1 / 4;align-self:center;margin-top:0;gap:9px}
 .comparison-model{gap:5px}
 .fraction-models .disc,.comparison-model .disc{width:32px}
 .compare-sign{line-height:32px;font-size:16px}
 .fraction-models>div,.comparison-model>div{font-size:19px}
}

/* Existing journal content in a featured-story layout. */
.journal-section{padding-top:30px}.journal-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:35px}.journal-heading .section-heading{margin-bottom:0}.journal-heading h2{font-size:46px}.journal-heading .text-link{margin-bottom:2px;white-space:nowrap}.journal-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:40px}.article-image{border-radius:18px;overflow:hidden;background:var(--sage)}.article-image img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .6s cubic-bezier(.22,1,.36,1)}.featured-article:hover .article-image img,.compact-article:hover .article-image img{transform:scale(1.045)}.article-meta{display:flex;gap:15px;font-size:10px;color:var(--muted);margin-top:18px}.featured-article h3{font-size:25px;line-height:1.3;letter-spacing:-.04em;margin-top:10px;max-width:560px}.featured-article h3>span{font-size:22px;margin-left:7px;color:var(--action)}.featured-article:hover h3,.compact-article:hover h3{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:5px}.journal-more{display:grid;grid-template-rows:1fr 1fr;gap:24px}.compact-article{display:grid;grid-template-columns:1fr .9fr;gap:22px;align-items:start}.compact-article+.compact-article{border-top:1px solid var(--line);padding-top:24px}.compact-article .article-meta{margin-top:0;margin-bottom:10px}.compact-article h3{font-size:20px;line-height:1.4;letter-spacing:-.035em}.compact-article .article-image img{aspect-ratio:1;object-position:center}.article-read{display:inline-flex;gap:14px;font-size:10px;font-weight:750;margin-top:18px;color:var(--green)}
@media(max-width:1100px){.journal-grid{gap:28px;grid-template-columns:1.1fr 1fr}.compact-article{gap:16px}.compact-article h3{font-size:17px}.featured-article h3{font-size:22px}.journal-heading h2{font-size:40px}}
@media(max-width:900px){.journal-grid{grid-template-columns:1fr 1fr;gap:24px}.compact-article{grid-template-columns:1fr .65fr;gap:15px}.compact-article h3{font-size:15px}.journal-heading h2{font-size:35px}.journal-more{gap:20px}.compact-article+.compact-article{padding-top:20px}}
@media(max-width:700px){.journal-section{padding-top:10px}.journal-heading{display:block;margin-bottom:25px}.journal-heading h2{font-size:33px}.journal-heading .text-link{margin-top:13px}.journal-grid{grid-template-columns:1fr;gap:28px}.featured-article h3{font-size:23px}.article-meta{font-size:10px;margin-top:14px}.journal-more{border-top:1px solid var(--line);padding-top:24px}.compact-article{grid-template-columns:1.3fr 1fr;gap:20px}.compact-article h3{font-size:17px;line-height:1.45}.compact-article .article-image{border-radius:12px}.article-read{margin-top:12px}.journal-heading .section-heading>p:last-child{font-size:13px}}
/* Layered depth follows natural scrolling. Each layer has a different travel distance.
   CSS timelines keep animation off the JavaScript scroll path. Static fallback below. */
.scroll-sentinel{position:absolute;top:20px;left:0;width:1px;height:1px;pointer-events:none}
@supports (animation-timeline: view()) {
 @media (prefers-reduced-motion:no-preference) {
  .hero-scene{view-timeline-name:--hero-depth;view-timeline-axis:block}
  .hero-sheet{animation:paper-depth linear both;animation-timeline:--hero-depth;animation-range:exit 0% exit 100%}
  .scene-props{animation:pencil-depth linear both;animation-timeline:--hero-depth;animation-range:exit 0% exit 100%}
  .scene-circle{animation:circle-depth linear both;animation-timeline:--hero-depth;animation-range:exit 0% exit 100%}
  .scene-note{animation:note-depth linear both;animation-timeline:--hero-depth;animation-range:exit 0% exit 100%}
  .duel-card{view-timeline-name:--duel-depth;view-timeline-axis:block}
  .duel-art img{animation:duel-rise linear both;animation-timeline:--duel-depth;animation-range:entry 0% contain 60%}
  .vs-sticker{animation:sticker-turn linear both;animation-timeline:--duel-depth;animation-range:entry 0% contain 100%}
  .coin-card{view-timeline-name:--coin-depth;view-timeline-axis:block}
  .coin-card>img{animation:coin-rise linear both;animation-timeline:--coin-depth;animation-range:entry 0% contain 100%}
  .message-preview{animation:message-settle linear both;animation-timeline:view();animation-range:entry 0% contain 60%}
 }
}
@keyframes paper-depth{from{transform:translateY(0) rotate(4deg)}to{transform:translateY(-70px) rotate(-2deg)}}
@keyframes pencil-depth{from{transform:translateY(0) rotate(0deg)}to{transform:translateY(65px) rotate(5deg)}}
@keyframes circle-depth{from{transform:translateY(0) scale(1)}to{transform:translateY(105px) scale(.93)}}
@keyframes note-depth{from{transform:translateY(0) rotate(-7deg)}to{transform:translateY(-110px) rotate(-2deg)}}
@keyframes duel-rise{from{transform:translateY(42px) scale(.93)}to{transform:translateY(0) scale(1)}}
@keyframes sticker-turn{from{transform:translateY(45px) rotate(-20deg)}to{transform:translateY(-8px) rotate(7deg)}}
@keyframes coin-rise{from{transform:translateY(52px) rotate(-7deg) scale(.94)}to{transform:translateY(-8px) rotate(3deg) scale(1.02)}}
@keyframes message-settle{from{transform:translateY(30px) rotate(-4deg)}to{transform:translateY(0) rotate(2deg)}}
@media(max-width:700px){
 @keyframes paper-depth{from{transform:translateY(0) rotate(4deg)}to{transform:translateY(-28px) rotate(0deg)}}
 @keyframes pencil-depth{from{transform:translateY(0)}to{transform:translateY(28px)}}
 @keyframes circle-depth{from{transform:translateY(0)}to{transform:translateY(42px)}}
 @keyframes note-depth{from{transform:translateY(0) rotate(-7deg)}to{transform:translateY(-40px) rotate(-3deg)}}
}

/* Decorative depth stays inside the page without creating sideways scrolling. */
main{overflow:clip}

/* Make the entire footer row clickable, including space around small labels. */
.footer-nav>div{gap:2px;font-size:14px;min-width:0}
.footer-nav a{display:flex;align-items:center;min-height:44px;padding-block:10px;overflow-wrap:anywhere}
.footer-nav span{margin-bottom:7px}
.footer-bottom>div{flex-wrap:wrap;gap:8px 24px}
.footer-bottom a{display:inline-flex;align-items:center;min-height:44px;padding-block:10px;font-size:12px}
.footer-nav a:hover,.footer-bottom a:hover{color:var(--action)}