:root {
  --blue: #2457d6;
  --blue-dark: #173a91;
  --blue-tint: #eaf0ff;
  --yellow: #f7c94b;
  --coral: #f0785b;
  --mint: #bfe7d5;
  --ink: #172033;
  --ink-soft: #536078;
  --line: #dce2eb;
  --bg: #fbfaf7;
  --paper: #ffffff;
  --radius: 18px;
  --shadow: 0 22px 60px rgba(25, 43, 83, 0.13);
  --font: "Aptos", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
button { font-family: inherit; }
.container { width: min(100% - 48px, 1180px); margin: 0 auto; }
.section { padding: 104px 0; }
section[id] { scroll-margin-top: 82px; }
h1, h2, h3, h4 { margin: 0; line-height: 1.08; }
h1 { font-size: clamp(3.2rem, 6.2vw, 5.6rem); letter-spacing: -.055em; }
h2 { font-size: clamp(2.25rem, 4.2vw, 4rem); letter-spacing: -.045em; }
h3 { font-size: 1.35rem; letter-spacing: -.02em; }
p { margin: 0; color: var(--ink-soft); }
.eyebrow { margin-bottom: 18px; color: var(--blue); font-size: .76rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow-light { color: #a9c3ff; }
.section-lede { font-size: 1.08rem; line-height: 1.75; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 100; padding: 10px 14px; border-radius: 8px; color: #fff; background: var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 11px 24px; border: 2px solid transparent; border-radius: 12px; font-weight: 800; line-height: 1.2; text-decoration: none; transition: transform .16s ease, box-shadow .16s ease, background .16s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: var(--blue); box-shadow: 0 10px 25px rgba(36, 87, 214, .24); }
.btn-primary:hover { background: var(--blue-dark); }
.btn-ghost { color: var(--blue); border-color: var(--blue); background: transparent; }
.btn-ghost:hover { background: var(--blue-tint); }
.btn-small { min-height: 42px; padding: 9px 16px; border-radius: 10px; color: #fff; background: var(--blue); font-size: .88rem; }
.btn-large { min-height: 56px; padding: 15px 28px; font-size: 1.02rem; }
.btn-light { color: var(--blue-dark); background: #fff; box-shadow: 0 12px 26px rgba(0, 0, 0, .14); }
.btn-light:hover { background: #fff9e2; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--yellow); outline-offset: 4px; }

.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(220, 226, 235, .85); background: rgba(251, 250, 247, .88); backdrop-filter: blur(14px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-size: 1.25rem; font-weight: 900; letter-spacing: -.02em; text-decoration: none; }
.brand-mark { width: 32px; height: 32px; }
.site-nav { display: flex; align-items: center; gap: 24px; }
.site-nav a { color: var(--ink-soft); font-size: .9rem; font-weight: 700; text-decoration: none; }
.site-nav a:hover { color: var(--blue); }
.site-nav .nav-signin { color: var(--ink); }
.site-nav .btn { color: #fff; }

.hero { overflow: hidden; padding: 78px 0 104px; background: radial-gradient(circle at 88% 12%, #fff3be 0, rgba(255, 243, 190, 0) 27%), var(--bg); }
.hero-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(500px, 1.1fr); gap: 70px; align-items: center; }
.hero-copy { position: relative; z-index: 2; }
.hero h1 { max-width: 680px; }
.hero h1 em { position: relative; z-index: 0; color: var(--blue); font-style: normal; }
.hero h1 em::after { content: ""; position: absolute; right: -2%; bottom: -8px; left: 2%; z-index: -1; height: 11px; border-radius: 50%; background: var(--yellow); transform: rotate(-2deg) scaleY(.45); }
.hero-kicker { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; color: var(--blue-dark); font-size: .78rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.hero-kicker span { width: 28px; height: 3px; border-radius: 5px; background: var(--coral); }
.hero .lede { max-width: 570px; margin: 26px 0 30px; font-size: 1.18rem; line-height: 1.7; }
.hero-ctas { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; }
.text-link { color: var(--ink); font-weight: 800; text-decoration: none; }
.text-link:hover { color: var(--blue); }
.hero-proof { display: flex; flex-wrap: wrap; gap: 12px 22px; margin-top: 30px; color: var(--ink-soft); font-size: .84rem; }
.hero-proof span::before { margin-right: 7px; color: var(--blue); font-weight: 900; content: "✓"; }

.product-stage { position: relative; padding: 38px 0 28px; }
.product-stage::before { position: absolute; inset: -24px -70px -40px -30px; border-radius: 48% 52% 43% 57% / 52% 34% 66% 48%; background: var(--blue); content: ""; transform: rotate(2deg); }
.app-window { position: relative; overflow: hidden; border: 8px solid var(--ink); border-radius: 24px; background: var(--paper); box-shadow: var(--shadow); transform: rotate(-1deg); }
.app-topbar { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; padding: 11px 14px; border-bottom: 1px solid var(--line); font-size: .78rem; }
.app-brand { display: flex; align-items: center; gap: 7px; }
.app-brand svg { width: 24px; height: 24px; color: var(--blue); }
.lesson-name { color: var(--ink-soft); font-weight: 750; }
.app-topbar button { justify-self: end; padding: 7px 12px; border: 0; border-radius: 8px; color: #fff; background: var(--blue); font: inherit; font-weight: 800; }
.app-canvas { position: relative; min-height: 390px; overflow: hidden; background-color: #fffefb; background-image: radial-gradient(#c8d2e1 1px, transparent 1px); background-size: 20px 20px; }
.canvas-toolbar { position: absolute; top: 18px; left: 16px; display: flex; gap: 5px; padding: 6px; border: 1px solid var(--line); border-radius: 12px; background: #fff; box-shadow: 0 8px 24px rgba(23, 32, 51, .1); }
.canvas-toolbar span { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 7px; color: var(--ink); font-weight: 800; }
.canvas-toolbar span:nth-child(2) { color: #fff; background: var(--blue); }
.lesson-card { position: absolute; top: 94px; left: 56px; padding: 14px 18px; border-left: 5px solid var(--yellow); background: #fff; box-shadow: 0 9px 26px rgba(23, 32, 51, .09); transform: rotate(-1deg); }
.lesson-card small { display: block; color: var(--coral); font-size: .7rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.lesson-card strong { display: block; margin-top: 4px; font-size: 1.3rem; }
.fraction-work { position: absolute; right: 30px; bottom: 38px; width: 64%; overflow: visible; }
.fraction-work path { fill: none; stroke: var(--blue); stroke-width: 6; stroke-linecap: round; }
.fraction-work .answer-ring { stroke: var(--coral); }
.fraction-work text { fill: var(--ink); font-family: "Comic Sans MS", cursive; font-size: 34px; font-weight: 700; }
.timer-chip { position: absolute; bottom: 28px; left: 25px; display: grid; gap: 2px; min-width: 94px; padding: 10px 14px; border-radius: 13px; color: var(--ink); background: var(--yellow); box-shadow: 0 8px 20px rgba(23, 32, 51, .12); }
.timer-chip span { font-size: .68rem; font-weight: 850; text-transform: uppercase; }
.timer-chip strong { font-size: 1.15rem; }
.page-dots { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 10px; background: #f5f6f8; }
.page-dots span { width: 7px; height: 7px; border-radius: 50%; background: #c7ced9; }
.page-dots span.active { width: 20px; border-radius: 10px; background: var(--blue); }
.page-dots button { border: 0; color: var(--ink-soft); background: transparent; font-size: 1rem; }
.stage-note { position: absolute; z-index: 3; padding: 10px 14px; border: 3px solid var(--ink); border-radius: 10px; color: var(--ink); background: #fff; box-shadow: 5px 5px 0 var(--ink); font-size: .78rem; font-weight: 800; transform: rotate(3deg); }
.stage-note-top { top: 0; right: -22px; }
.stage-note-bottom { bottom: 2px; left: -32px; background: var(--mint); transform: rotate(-4deg); }
.stage-note-bottom span { font-size: 1.18rem; }

.promise-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.promise-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.promise-grid > div { display: grid; grid-template-columns: auto 1fr; gap: 0 14px; padding: 28px 32px; border-right: 1px solid var(--line); }
.promise-grid > div:last-child { border-right: 0; }
.promise-grid strong { grid-row: 1 / 3; align-self: center; color: var(--coral); font-size: 1.65rem; letter-spacing: -.06em; }
.promise-grid span { color: var(--ink); font-weight: 850; }
.promise-grid small { color: var(--ink-soft); font-size: .78rem; }

.split { display: grid; grid-template-columns: minmax(0, .88fr) minmax(460px, 1.12fr); gap: 90px; align-items: center; }
.feature-copy h2 { margin-bottom: 24px; }
.feature-list { display: grid; gap: 0; margin: 34px 0 0; padding: 0; list-style: none; }
.feature-list li { display: grid; grid-template-columns: 40px 1fr; gap: 14px; padding: 19px 0; border-top: 1px solid var(--line); }
.feature-list li > span { color: var(--coral); font-size: .72rem; font-weight: 900; }
.feature-list strong { display: block; margin-bottom: 4px; color: var(--ink); }
.feature-list p { font-size: .91rem; line-height: 1.55; }
.whiteboard-demo { position: relative; border: 7px solid var(--ink); border-radius: 20px; background: #f3f4f7; box-shadow: var(--shadow); transform: rotate(1deg); }
.demo-tabs { display: flex; gap: 4px; padding: 9px 10px; background: #e8ebf0; }
.demo-tabs span { padding: 5px 12px; border-radius: 7px 7px 0 0; color: var(--ink-soft); font-size: .72rem; font-weight: 800; }
.demo-tabs span.active { color: var(--ink); background: #fff; }
.demo-board { position: relative; min-height: 430px; overflow: hidden; background: #fff; }
.handwriting-lines { position: absolute; inset: 80px 0 auto; }
.handwriting-lines i { display: block; height: 46px; border-top: 2px solid #bed0f1; }
.handwriting-lines i:nth-child(2), .handwriting-lines i:nth-child(3) { border-top-style: dashed; }
.handwritten { position: absolute; top: 86px; left: 45px; color: var(--ink); font-family: "Comic Sans MS", cursive; font-size: clamp(1.8rem, 3vw, 2.6rem); line-height: 1.5; transform: rotate(-3deg); }
.handwritten em { color: var(--blue); font-style: normal; }
.object-card { position: absolute; right: 55px; bottom: 48px; padding: 14px 21px; border-radius: 8px; color: var(--ink); background: var(--yellow); font-weight: 900; transform: rotate(5deg); }
.selection-box { position: absolute; right: 37px; bottom: 31px; width: 132px; height: 70px; border: 2px dashed var(--blue); transform: rotate(5deg); }
.selection-box span { position: absolute; width: 8px; height: 8px; border: 2px solid var(--blue); border-radius: 50%; background: #fff; }
.selection-box span:nth-child(1) { top: -5px; left: -5px; }.selection-box span:nth-child(2) { top: -5px; right: -5px; }.selection-box span:nth-child(3) { bottom: -5px; left: -5px; }.selection-box span:nth-child(4) { right: -5px; bottom: -5px; }
.demo-tools { position: absolute; bottom: 18px; left: -29px; display: flex; flex-direction: column; gap: 5px; padding: 7px; border: 1px solid var(--line); border-radius: 13px; background: #fff; box-shadow: 0 12px 30px rgba(23, 32, 51, .15); }
.demo-tools b { display: grid; width: 35px; height: 35px; place-items: center; border-radius: 8px; font-weight: 800; }
.demo-tools b.selected { color: #fff; background: var(--blue); }
.demo-label { position: absolute; top: 55px; right: -34px; padding: 9px 13px; border: 2px solid var(--ink); border-radius: 8px; background: var(--mint); box-shadow: 4px 4px 0 var(--ink); font-size: .74rem; font-weight: 850; transform: rotate(5deg); }

.files-section { color: #fff; background: var(--ink); }
.files-grid { display: grid; grid-template-columns: 1fr .9fr; gap: 90px; align-items: center; }
.files-section h2 { margin-bottom: 24px; }
.files-section p { color: #cbd3e2; font-size: 1.08rem; }
.files-visual { position: relative; min-height: 480px; }
.file-card { position: absolute; z-index: 2; display: grid; width: 235px; padding: 22px; border: 4px solid #fff; border-radius: 17px; color: var(--ink); background: #fff; box-shadow: 10px 10px 0 rgba(0, 0, 0, .28); }
.file-card span { width: max-content; margin-bottom: 20px; padding: 5px 9px; border-radius: 6px; color: #fff; background: var(--blue); font-size: .76rem; font-weight: 900; }
.file-card strong { margin-bottom: 3px; }.file-card small { color: var(--ink-soft); }
.file-draaw { top: 25px; left: 15px; transform: rotate(-5deg); }
.file-iwb { right: 10px; bottom: 15px; transform: rotate(5deg); }
.file-iwb span { background: var(--coral); }
.file-arrow { position: absolute; top: 190px; left: 210px; z-index: 3; color: var(--yellow); font-size: 3.5rem; transform: rotate(16deg); }
.device-stack { position: absolute; top: 115px; right: 30px; left: 140px; height: 250px; }
.device { position: absolute; display: grid; place-items: center; border: 7px solid #445069; color: var(--blue); background: #edf1fa; font-weight: 900; }
.device.laptop { inset: 25px 30px 25px 0; border-radius: 10px; }
.device.laptop::after { position: absolute; right: -32px; bottom: -22px; left: -32px; height: 13px; border-radius: 0 0 9px 9px; background: #657189; content: ""; }
.device.tablet { right: 0; bottom: 0; width: 110px; height: 155px; border-radius: 14px; background: #fff; box-shadow: -12px 10px 25px rgba(0, 0, 0, .3); }
.file-points { display: grid; gap: 20px; margin-top: 36px; }
.file-points div { display: grid; gap: 4px; padding-left: 18px; border-left: 3px solid var(--yellow); }
.file-points strong { color: #fff; }.file-points span { color: #aeb8cb; font-size: .9rem; }

.toolkit-section { background: #fff; }
.section-heading-row { display: grid; grid-template-columns: 1.25fr .75fr; gap: 80px; align-items: end; margin-bottom: 54px; }
.section-heading-row > p { padding-bottom: 6px; font-size: 1.02rem; line-height: 1.7; }
.tool-showcase { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.tool-feature { position: relative; min-height: 370px; overflow: hidden; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); }
.tool-feature h3 { position: absolute; bottom: 70px; left: 30px; }
.tool-feature > p { position: absolute; right: 30px; bottom: 27px; left: 30px; max-width: 500px; font-size: .9rem; }
.tool-number { position: absolute; top: 24px; left: 26px; color: rgba(23, 32, 51, .48); font-size: .72rem; font-weight: 900; }
.tool-timer { background: var(--blue-tint); }.tool-words { background: #fff7d8; }.tool-play { background: #eaf8f2; }.tool-utility { background: #fdeeea; }
.mini-timer { position: absolute; top: 58px; left: 50%; display: grid; width: 230px; padding: 24px; border: 4px solid var(--ink); border-radius: 15px; background: #fff; box-shadow: 9px 9px 0 var(--blue); transform: translateX(-50%) rotate(-2deg); }
.mini-timer small { color: var(--ink-soft); font-weight: 800; }.mini-timer strong { color: var(--ink); font-size: 3rem; letter-spacing: -.08em; }.mini-timer i { height: 7px; margin-top: 12px; border-radius: 7px; background: linear-gradient(90deg, var(--coral) 66%, var(--line) 66%); }
.letter-grid { position: absolute; top: 56px; left: 50%; display: grid; grid-template-columns: repeat(4, 52px); gap: 8px; transform: translateX(-50%) rotate(2deg); }
.letter-grid i { display: grid; width: 52px; height: 52px; place-items: center; border: 3px solid var(--ink); border-radius: 8px; color: var(--ink); background: #fff; box-shadow: 3px 3px 0 var(--ink); font-style: normal; font-size: 1.25rem; font-weight: 900; }
.letter-grid i:nth-child(3n) { background: var(--yellow); }
.dice-pair { position: absolute; top: 58px; left: 50%; display: flex; gap: 20px; transform: translateX(-50%) rotate(-4deg); }
.dice-pair i { display: grid; width: 110px; height: 110px; place-items: center; border: 4px solid var(--ink); border-radius: 18px; color: var(--ink); background: #fff; box-shadow: 7px 7px 0 #54bd91; font-style: normal; font-size: 1.4rem; line-height: 1.1; text-align: center; }.dice-pair i:last-child { transform: rotate(10deg); }
.utility-icons { position: absolute; top: 74px; left: 50%; display: flex; gap: 15px; transform: translateX(-50%); }
.utility-icons i { display: grid; width: 82px; height: 82px; place-items: center; border: 4px solid var(--ink); border-radius: 50%; color: var(--ink); background: #fff; box-shadow: 5px 5px 0 var(--coral); font-style: normal; font-size: 1.25rem; font-weight: 900; }.utility-icons i:nth-child(2) { transform: translateY(30px); }

.why-section { background: var(--blue-tint); }
.why-intro { display: grid; grid-template-columns: .7fr 1.1fr 1fr; gap: 45px; align-items: start; margin-bottom: 56px; }
.why-intro .eyebrow { margin-top: 12px; }.why-intro > p:last-child { padding-top: 10px; font-size: 1.02rem; }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.why { min-height: 280px; padding: 26px; border: 1px solid rgba(23, 32, 51, .1); border-radius: 16px; background: #fff; }
.why:nth-child(2) { transform: translateY(22px); }.why:nth-child(3) { transform: translateY(-12px); }.why:nth-child(4) { transform: translateY(12px); }
.why-icon { display: grid; width: 42px; height: 42px; margin-bottom: 45px; place-items: center; border: 2px solid var(--ink); border-radius: 50%; color: var(--ink); background: var(--yellow); font-size: .75rem; font-weight: 900; }
.why h3 { margin-bottom: 12px; }.why p { font-size: .89rem; line-height: 1.65; }
.why-fast .why-icon { background: var(--coral); }.why-offline .why-icon { background: var(--mint); }.why-compatible .why-icon { color: #fff; background: var(--blue); }

.plans-heading { max-width: 780px; margin: 0 auto 52px; text-align: center; }
.plans-heading h2 { margin-bottom: 20px; }.plans-heading > p:last-child { max-width: 650px; margin: 0 auto; }
.plan-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 490px)); justify-content: center; gap: 22px; }
.plan-card { display: flex; flex-direction: column; min-height: 560px; padding: 35px; border: 2px solid var(--ink); border-radius: 18px; background: #fff; }
.plan-plus { position: relative; color: #fff; background: var(--blue); box-shadow: 10px 10px 0 var(--ink); transform: rotate(1deg); }
.plan-label { display: inline-flex; width: max-content; padding: 5px 9px; border-radius: 6px; color: var(--blue-dark); background: var(--blue-tint); font-size: .7rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.plan-plus .plan-label { color: var(--ink); background: var(--yellow); }
.plan-card h3 { margin-top: 24px; font-size: 1.8rem; }.price { margin: 12px 0 4px; color: var(--ink); font-size: 3.2rem; font-weight: 900; letter-spacing: -.07em; }.price-soon { font-size: 2.25rem; }.plan-card > div > p:last-child { max-width: 340px; }
.plan-plus p, .plan-plus .price { color: #e9efff; }
.plan-card ul { display: grid; gap: 13px; margin: 28px 0 34px; padding: 25px 0 0; border-top: 1px solid var(--line); list-style: none; }
.plan-plus ul { border-color: rgba(255, 255, 255, .3); }.plan-card li { position: relative; padding-left: 26px; color: var(--ink-soft); font-size: .91rem; }.plan-plus li { color: #f1f4ff; }.plan-card li::before { position: absolute; left: 0; color: var(--blue); font-weight: 900; content: "✓"; }.plan-plus li::before { color: var(--yellow); }
.plan-card .btn { width: 100%; margin-top: auto; }.plan-plus .btn-ghost { color: #fff; border-color: #fff; }.plan-plus .btn-ghost:hover { background: rgba(255, 255, 255, .12); }
.plans-note { margin-top: 30px; text-align: center; font-size: .83rem; }

.cta-band { color: #fff; background: var(--blue-dark); }
.cta-inner { display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; align-items: end; }
.cta-band h2 { color: #fff; }.cta-band p:not(.eyebrow) { max-width: 430px; margin-bottom: 26px; color: #c8d7fa; font-size: 1.03rem; }

.site-footer { padding: 46px 0; border-top: 1px solid var(--line); background: #fff; }
.footer-inner { display: grid; grid-template-columns: 1fr 1.4fr auto; align-items: center; gap: 24px; }
.footer-brand { font-size: 1.1rem; }.footer-brand .brand-mark { width: 28px; height: 28px; }.footer-note { color: var(--ink-soft); font-size: .84rem; }.site-footer nav { display: flex; gap: 18px; }.site-footer nav a { color: var(--ink-soft); font-size: .82rem; font-weight: 750; text-decoration: none; }.site-footer nav a:hover { color: var(--blue); }.copyright { grid-column: 1 / -1; padding-top: 20px; border-top: 1px solid var(--line); color: #8791a4; font-size: .75rem; }

@media (max-width: 1020px) {
  .hero-grid { grid-template-columns: 1fr; gap: 58px; }.hero-copy { max-width: 760px; }.product-stage { width: min(100%, 720px); margin: 0 auto; }
  .split, .files-grid { grid-template-columns: 1fr; gap: 70px; }.feature-copy { max-width: 760px; }.whiteboard-demo { width: min(100%, 700px); margin: 0 auto; }.files-visual { width: min(100%, 600px); margin: 0 auto; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }.why:nth-child(n) { transform: none; }
  .footer-inner { grid-template-columns: 1fr auto; }.footer-note { display: none; }
}

@media (max-width: 760px) {
  .container { width: min(100% - 32px, 1180px); }.section { padding: 76px 0; }h1 { font-size: clamp(3rem, 14vw, 4.5rem); }h2 { font-size: clamp(2.1rem, 10vw, 3.2rem); }
  .site-header { position: relative; }.header-inner { min-height: 66px; }.site-nav { gap: 10px; }.site-nav > a:not(.nav-signin):not(.btn) { display: none; }.site-nav .nav-signin { font-size: .84rem; }.site-nav .btn { min-height: 38px; padding: 8px 12px; font-size: .78rem; }
  .hero { padding: 58px 0 72px; }.hero-grid { gap: 44px; }.hero .lede { font-size: 1.06rem; }.hero-proof { display: grid; }.product-stage { padding: 24px 0 20px; }.product-stage::before { inset: -12px -46px -28px -20px; }.app-window { border-width: 5px; border-radius: 16px; }.app-canvas { min-height: 300px; }.lesson-card { top: 82px; left: 25px; }.fraction-work { right: 8px; bottom: 24px; width: 70%; }.stage-note-top { right: -6px; }.stage-note-bottom { left: -8px; }.lesson-name { display: none; }.app-topbar { grid-template-columns: 1fr 1fr; }
  .promise-grid { grid-template-columns: 1fr; }.promise-grid > div { border-right: 0; border-bottom: 1px solid var(--line); }.promise-grid > div:last-child { border-bottom: 0; }
  .whiteboard-demo { border-width: 5px; }.demo-board { min-height: 350px; }.handwritten { left: 30px; font-size: 1.7rem; }.demo-label { top: 48px; right: -8px; }.demo-tools { bottom: 10px; left: -8px; flex-direction: row; }.object-card { right: 35px; bottom: 70px; }.selection-box { right: 18px; bottom: 52px; }
  .files-visual { min-height: 420px; transform: scale(.9); transform-origin: center; }.file-draaw { left: -10px; }.file-iwb { right: -10px; }.file-arrow { left: 42%; }.device-stack { left: 105px; }
  .section-heading-row, .why-intro, .cta-inner { grid-template-columns: 1fr; gap: 24px; }.tool-showcase, .why-grid, .plan-grid { grid-template-columns: 1fr; }.tool-feature { min-height: 350px; }.why { min-height: auto; }.why-icon { margin-bottom: 30px; }.plan-card { min-height: 520px; padding: 28px; }.plan-plus { transform: none; }
  .footer-inner { grid-template-columns: 1fr; }.site-footer nav { flex-wrap: wrap; }.copyright { grid-column: 1; }
}

@media (max-width: 440px) {
  .brand span { display: none; }.stage-note { font-size: .68rem; }.stage-note-bottom { display: none; }.canvas-toolbar span { width: 26px; height: 26px; }.lesson-card strong { font-size: 1rem; }.timer-chip { left: 10px; }
  .files-visual { min-height: 380px; margin-top: -40px; margin-bottom: -40px; transform: scale(.76); }.utility-icons i { width: 70px; height: 70px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }*, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}