:root {
  --paper: #fbfaf7;
  --white: #fff;
  --ink: #203e35;
  --text: #4d6058;
  --muted: #69776e;
  --green: #28634b;
  --green-dark: #194a36;
  --sage: #eaf0e4;
  --line: #e2e5dc;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Be Vietnam Pro", system-ui, sans-serif;
  --mono: "JetBrains Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 102px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 14px; line-height: 1.7; -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }
p, h1, h2, h3 { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }
button:focus-visible, a:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: 3px solid #8c7132; outline-offset: 5px; }
[hidden] { display: none !important; }
::selection { color: #173e2e; background: #d6e6be; }
.icon { width: 20px; height: 20px; flex-shrink: 0; vertical-align: middle; }
.container { width: min(1184px, calc(100% - 96px)); margin-inline: auto; }
.section-pad { padding-block: 104px; }
.eyebrow { display: block; font-size: 10px; font-weight: 600; letter-spacing: 1.8px; line-height: 1.6; color: var(--green); }
h2 { font-family: var(--serif); font-weight: 600; font-size: clamp(32px, 3.35vw, 46px); line-height: 1.2; letter-spacing: -1.5px; }
.skip-link { position: fixed; z-index: 100; top: -100px; left: 20px; padding: 12px 20px; background: var(--green); color: white; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; z-index: 20; top: 0; background: rgba(251,250,247,.95); border-bottom: 1px solid rgba(224,228,216,.8); backdrop-filter: blur(16px); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; min-height: 88px; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 700; letter-spacing: -.9px; white-space: nowrap; line-height: 1; }
.brand-symbol { width: 35px; height: 35px; color: var(--green); flex-shrink: 0; }
.brand-light { font-weight: 400; }
.brand-dot { color: #78a367; }
.desktop-nav { display: flex; align-items: center; gap: 29px; font-size: 12px; font-weight: 500; }
.desktop-nav a { padding-block: 8px; color: var(--text); }
.desktop-nav a:hover, .footer-links a:hover { color: var(--green); text-decoration: underline; text-underline-offset: 5px; }
.nav-actions { display: flex; align-items: center; gap: 21px; }
.language-link { display: inline-flex; gap: 6px; align-items: center; font-size: 11px; font-weight: 600; min-height: 44px; }
.language-link .icon { width: 15px; height: 15px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 52px; padding: 14px 21px; border: 1px solid transparent; border-radius: 8px; font-size: 12px; font-weight: 500; line-height: 1.4; transition: background .2s, transform .2s, box-shadow .2s; }
.button .icon { width: 17px; height: 17px; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--green); color: white; box-shadow: 0 4px 7px -5px #1c513c80; }
.button.primary:hover { background: var(--green-dark); box-shadow: 0 6px 16px -8px #1c513c80; }
.button.secondary { border-color: #d5dbcd; background: rgba(255,255,255,.35); }
.button.secondary:hover { background: #eef1e7; }
.button.small { min-height: 42px; padding: 10px 16px; font-size: 11px; gap: 10px; }
.button.white { background: #f4f4e9; color: var(--green-dark); }
.button.white:hover { background: white; }
.menu-toggle { display: none; background: none; border: 1px solid var(--line); width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: 8px; }
.mobile-nav { padding-block: 8px 20px; }
.mobile-nav a { display: flex; justify-content: space-between; padding: 13px 0; border-bottom: 1px solid var(--line); }
.hero { display: grid; grid-template-columns: .94fr 1.06fr; align-items: center; gap: 35px; padding-block: 88px 72px; }
.announcement { display: inline-flex; align-items: center; gap: 9px; border: 1px solid #d9e3d1; background: #f0f4e9; border-radius: 30px; color: #3e6345; font-size: 10px; padding: 6px 11px; }
.announcement .icon { width: 12px; height: 12px; margin-left: 8px; }
.live-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: #5f9050; box-shadow: 0 0 0 3px #5f905015; flex-shrink: 0; }
.hero-eyebrow { margin: 30px 0 15px; font-size: 9px; letter-spacing: 2px; color: #70806d; }
.hero h1 { font-family: var(--serif); font-weight: 600; font-size: clamp(46px, 4.65vw, 64px); letter-spacing: -2.5px; line-height: 1.09; }
.hero h1 > span { color: #65855a; }
.hero-description { max-width: 432px; font-size: 14px; color: var(--text); line-height: 1.95; margin-top: 23px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 29px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 8px 17px; margin-top: 20px; font-size: 9px; color: #6b786c; }
.hero-trust > span { display: flex; align-items: center; gap: 5px; }
.hero-trust .icon { width: 12px; height: 12px; }
.hero-visual { position: relative; padding-top: 18px; padding-bottom: 24px; isolation: isolate; min-width: 0; }
.orbit { position: absolute; z-index: -1; border: 1px solid #dfe6d6; border-radius: 50%; pointer-events: none; }
.orbit-one { width: 94%; aspect-ratio: 1; top: -20px; left: 5%; }
.orbit-two { width: 80%; aspect-ratio: 1; top: 20px; left: 12%; }
.hero-visual::before { content: ''; position: absolute; z-index: -1; inset: 0 -30px -30px 30px; background: radial-gradient(ellipse, #e8eddd 10%, transparent 68%); }
.product-window { position: relative; width: 100%; background: #fff; border-radius: 13px; border: 1px solid #dce3d6; box-shadow: 0 24px 45px -20px #28422f26, 0 3px 8px #28422f08; transform: rotate(-1.2deg); }
.window-bar { height: 35px; display: flex; align-items: center; justify-content: space-between; padding-inline: 13px; border-bottom: 1px solid #e7e9e2; border-radius: 13px 13px 0 0; background: #f7f8f3; color: #899180; font-size: 8px; }
.window-bar > span:nth-child(2) { display: flex; align-items: center; gap: 5px; }
.window-bar .icon { width: 10px; height: 10px; }
.window-dots { display: flex; gap: 4px; }
.window-dots i { width: 6px; height: 6px; border-radius: 50%; background: #d5dacc; }
.window-dots i:first-child { background: #deaf9c; }
.window-dots i:nth-child(2) { background: #dbc794; }
.window-dots i:last-child { background: #a8bf96; }
.window-version { font-size: 8px; }
.preview-shell { display: flex; min-height: 405px; }
.preview-rail { width: 48px; padding-block: 16px 14px; display: flex; align-items: center; flex-direction: column; gap: 23px; border-right: 1px solid #eceee6; background: #fafbf6; flex-shrink: 0; }
.preview-rail .brand-symbol { width: 25px; height: 25px; margin-bottom: 6px; }
.preview-rail > .icon { color: #95a18e; width: 15px; height: 15px; }
.rail-active { display: grid; place-items: center; width: 29px; height: 29px; border-radius: 7px; background: #e7eee0; color: #4c714c; margin-bottom: -7px; }
.rail-active .icon { width: 15px; height: 15px; }
.rail-bottom { margin-top: auto; width: 25px; height: 25px; background: #e9eddc; border-radius: 50%; display: grid; place-items: center; font-size: 8px; color: #607058; }
.preview-body { padding: 18px 20px 15px; flex: 1; min-width: 0; }
.preview-top { display: flex; align-items: center; justify-content: space-between; font-size: 9px; margin-bottom: 14px; color: #74806e; }
.preview-locale { font-size: 8px; font-weight: 600; color: #506449; }
.preview-locale > span { color: #b5bcac; margin-inline: 4px; }
.preview-tabs { display: flex; gap: 13px; border-bottom: 1px solid #eceee5; margin-bottom: 16px; }
.preview-tabs button { border: 0; border-bottom: 2px solid transparent; background: none; padding: 5px 0 9px; font-size: 9px; color: #788271; }
.preview-tabs button[aria-selected="true"] { border-color: #537b4d; color: #385a35; font-weight: 600; }
.preview-panel { min-height: 302px; }
.preview-panel h2 { font-family: var(--sans); font-size: 16px; letter-spacing: -.6px; font-weight: 600; line-height: 1.45; }
.preview-sub { font-size: 9px; color: #7d8875; margin-top: 3px; }
.preview-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-block: 16px 13px; }
.preview-metrics > div { padding: 10px 11px 8px; border: 1px solid #e9ecdf; border-radius: 7px; background: #fdfef9; }
.preview-metrics > div > span { display: block; font-size: 7px; color: #77836d; line-height: 1.4; }
.preview-metrics b { display: block; font-size: 21px; font-weight: 500; line-height: 1.5; letter-spacing: -.8px; }
.preview-metrics small { font-size: 14px; color: #79a561; font-weight: 400; margin-left: 5px; }
.preview-metrics .metric-unit { font-size: 12px; }
.preview-metrics .streak-icon .icon { width: 14px; height: 14px; color: #bb9054; }
.lesson-preview { background: #eaf1e0; border: 1px solid #dce7cf; padding: 14px; border-radius: 8px; position: relative; overflow: hidden; }
.micro-label { font-size: 7px; font-weight: 600; letter-spacing: 1.2px; color: #6a805d; }
.lesson-preview h3 { font-size: 12px; margin-top: 5px; font-weight: 600; }
.lesson-preview p { font-size: 8px; max-width: 72%; color: #6a7a5c; margin-top: 4px; }
.lesson-preview a { display: inline-flex; gap: 15px; align-items: center; font-size: 8px; margin-top: 12px; font-weight: 600; }
.lesson-preview a .icon { width: 13px; height: 13px; }
.lesson-orb { position: absolute; right: 13px; top: 29px; height: 60px; width: 60px; border: 1px solid #c8d8b5; border-radius: 50%; display: grid; place-items: center; background: #e0eacd; transform: rotate(8deg); }
.lesson-orb::after { content: ''; position: absolute; inset: 6px; border: 1px solid #bdcda5; border-radius: 50%; }
.lesson-orb span { font-family: var(--serif); font-size: 31px; color: #6c8550; }
.activity-row { display: grid; grid-template-columns: 1.25fr 1fr; gap: 15px; margin-top: 15px; }
.activity-chart h3 { font-size: 8px; font-weight: 500; color: #6a785e; }
.bars { height: 66px; display: flex; gap: 9px; align-items: end; margin-top: 8px; }
.bars > div { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: end; height: 100%; }
.bars i { display: block; width: 100%; max-width: 15px; background: #dce8cd; border-radius: 3px 3px 0 0; }
.bars > div:nth-child(6) i { background: #557b4b; }
.bars .bar-h42 { height: 30%; }.bars .bar-h65 { height: 47%; }.bars .bar-h48 { height: 35%; }.bars .bar-h86 { height: 62%; }.bars .bar-h58 { height: 42%; }.bars .bar-h96 { height: 70%; }.bars .bar-h70 { height: 51%; }
.bars span { font-size: 6px; color: #8c9583; margin-top: 5px; }
.goal-card { display: flex; align-items: center; gap: 9px; padding-top: 12px; }
.goal-ring { display: grid; place-items: center; width: 55px; height: 55px; flex-shrink: 0; border-radius: 50%; background: conic-gradient(#71915b 60%, #edf1e5 0); position: relative; }
.goal-ring::before { content: ''; position: absolute; inset: 5px; background: white; border-radius: 50%; }
.goal-ring > span { position: relative; font-size: 15px; }
.goal-ring small { font-size: 8px; }
.goal-card > div:last-child { display: flex; flex-direction: column; font-size: 7px; color: #7a8770; }
.goal-card b { font-size: 11px; color: #506044; font-weight: 500; }
.window-caption { display: flex; gap: 6px; align-items: center; padding: 10px 13px; font-size: 6.5px; color: #7a856e; border-top: 1px solid #edf0e5; }
.window-caption .live-dot { width: 4px; height: 4px; box-shadow: none; }
.caption-right { margin-left: auto; font-size: 5.8px; letter-spacing: 1px; }
.floating-note { position: absolute; left: 20px; bottom: -1px; display: flex; align-items: center; gap: 13px; padding: 15px 18px; border: 1px solid #e4e7db; border-radius: 9px; background: #fffefa; box-shadow: 0 13px 22px -12px #28422f24; transform: rotate(1.5deg); }
.floating-note > .icon { width: 29px; height: 29px; color: #a2af78; }
.floating-note div > span { display: block; font-size: 6px; color: #8b9178; letter-spacing: 1px; }
.floating-note strong { font-size: 10px; font-weight: 500; }
.note-check { display: grid; place-items: center; width: 23px; height: 23px; border-radius: 50%; background: #edf3e5; color: #7b995c; margin-left: 16px; }
.note-check .icon { width: 12px; height: 12px; }
.interactive-flashcard { text-align: center; padding: 14px 8px; }
.flashcard-symbol { color: #668752; margin: 20px auto 12px; }
.flashcard-symbol .icon { width: 34px; height: 34px; }
.interactive-flashcard h2 { font-family: var(--serif); font-size: 22px; min-height: 66px; line-height: 1.35; }
.interactive-flashcard p { font-size: 9px; margin-block: 13px 18px; color: var(--muted); }
.interactive-flashcard .button { min-height: 38px; font-size: 10px; padding: 10px 15px; }
.mini-quiz { padding: 6px 0; }
.mini-quiz h2 { font-size: 16px; margin-block: 12px 16px; }
.quiz-options { display: grid; gap: 8px; }
.quiz-options button { display: flex; align-items: center; gap: 10px; background: white; border: 1px solid #e0e5d8; border-radius: 7px; padding: 8px 12px; font-size: 11px; text-align: left; }
.quiz-options button span { width: 23px; height: 23px; display: grid; place-items: center; background: #f0f3e9; font-size: 9px; border-radius: 5px; }
.quiz-options button:hover:not(:disabled) { border-color: #799365; }
.quiz-options button.is-correct { border-color: #68905b; background: #eef5e6; }
.quiz-options button.is-incorrect { border-color: #b77361; background: #faf0eb; }
.quiz-options button:disabled { opacity: 1; cursor: default; }
#quiz-feedback { font-size: 9px; margin-top: 12px; color: var(--text); }
.text-button { border: 0; padding: 6px 0; background: none; font-size: 10px; font-weight: 500; }
.text-button .icon { width: 12px; height: 12px; }
.proof-strip { padding-top: 28px; padding-bottom: 45px; }
.proof-label { display: flex; align-items: center; gap: 22px; font-size: 8px; font-weight: 500; color: #76816e; letter-spacing: 1.4px; }
.proof-label .line { height: 1px; flex: 1; background: var(--line); }
.proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 27px; }
.proof-grid > div { border-right: 1px solid var(--line); padding-left: 34px; display: flex; align-items: center; gap: 16px; }
.proof-grid > div:first-child { padding-left: 0; }
.proof-grid > div:last-child { border: 0; }
.proof-grid strong { font-family: var(--serif); font-size: 35px; font-weight: 600; line-height: 1; letter-spacing: -1px; white-space: nowrap; }
.proof-grid > div:last-child strong { font-size: 27px; }
.proof-grid span { font-size: 10px; line-height: 1.6; color: var(--muted); max-width: 90px; }
.source-note { color: #798272; font-size: 8px; margin-top: 24px; }
.problem-section { padding-block: 67px 91px; max-width: 680px; text-align: center; }
.problem-mark { margin: 0 auto 21px; width: 47px; height: 47px; border-radius: 50%; background: #eff0e6; color: #89986c; display: grid; place-items: center; }
.problem-mark .icon { width: 22px; height: 22px; }
.problem-section h2 { margin-block: 18px; }
.problem-section > p { color: var(--text); max-width: 530px; margin: auto; font-size: 13px; line-height: 1.9; }
.features-section { background: #f1f3eb; border-block: 1px solid #e7e9de; }
.section-heading { display: flex; justify-content: space-between; gap: 40px; align-items: end; margin-bottom: 38px; }
.section-heading h2 { margin-top: 14px; }
.section-heading > p { max-width: 300px; font-size: 12px; color: var(--text); line-height: 1.9; padding-bottom: 6px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature-card { background: #fffefa; border: 1px solid #e1e6d8; border-radius: 13px; padding: 22px 20px 20px; display: flex; flex-direction: column; min-width: 0; transition: transform .2s, box-shadow .2s; }
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 10px 26px #213f3308; }
.feature-head { display: flex; justify-content: space-between; align-items: center; }
.feature-icon { background: #eaf0df; width: 35px; height: 35px; display: grid; place-items: center; border-radius: 9px; color: #617c46; }
.feature-1 .feature-icon { background: #eeebf7; color: #8b76b3; }.feature-2 .feature-icon { background: #f6eddb; color: #ab8a4a; }.feature-3 .feature-icon { background: #e8eeed; color: #62867b; }
.feature-icon .icon { width: 17px; height: 17px; }
.feature-number { font-family: var(--mono); color: #b2b8aa; font-size: 9px; }
.feature-card h3 { font-family: var(--serif); font-size: 23px; font-weight: 600; line-height: 1.25; letter-spacing: -.5px; margin-block: 21px 11px; }
.feature-card > p { font-size: 10px; color: #687460; line-height: 1.9; margin-bottom: 22px; }
.feature-art { border-radius: 8px; margin-top: auto; min-height: 157px; padding: 17px 13px; overflow: hidden; }
.lesson-art { background: #f1f4e8; }
.mini-tag { font-size: 6px; color: #7d8c66; letter-spacing: 1px; }
.art-formula { display: flex; align-items: center; justify-content: center; gap: 10px; font-family: var(--serif); font-size: 24px; padding-block: 18px 11px; color: #557747; }
.art-formula > span:not(.fraction) { color: #9aaa88; }
.fraction { display: flex; flex-direction: column; text-align: center; font-size: 17px; line-height: 1.45; }
.fraction > span:first-child { border-bottom: 1px solid #7d946c; padding-inline: 10px; }
.fraction sup { font-size: 9px; }
.art-rule { width: 24px; height: 2px; background: #c8d4b5; margin: 0 auto 9px; }
.lesson-art p { font-size: 7px; text-align: center; color: #778766; }
.srs-art { background: #f0edf8; }
.srs-label { display: flex; align-items: center; justify-content: space-between; font-size: 8px; color: #9486b2; margin-bottom: 12px; }
.srs-label .icon { width: 13px; height: 13px; }
.srs-art > svg { width: 100%; height: 70px; }
.srs-times { display: flex; justify-content: space-between; color: #998bad; font-size: 7px; padding-top: 8px; }
.answer-art { background: #f7f1e5; display: grid; gap: 7px; align-content: center; }
.sample-answer { display: flex; align-items: center; gap: 8px; font-size: 9px; padding: 8px; background: #fffdf8; border: 1px solid #e8e0d0; border-radius: 5px; }
.sample-answer > span { font-size: 7px; color: #9e967e; border: 1px solid #e8e0d0; border-radius: 3px; width: 17px; height: 17px; display: grid; place-items: center; }
.sample-answer.correct { background: #eaf0df; border-color: #cddcb9; }.sample-answer.correct > span { color: #587b44; border-color: #c5d6b1; }
.sample-answer .icon { width: 13px; height: 13px; margin-left: auto; color: #6e8b50; }
.answer-explanation { font-size: 7px; color: #a08752; display: flex; align-items: center; gap: 5px; padding-top: 5px; }.answer-explanation .icon { width: 12px; height: 12px; }
.progress-art { background: #eaf0eb; padding: 21px 14px; }
.progress-art > div:not(.progress-track) { display: flex; justify-content: space-between; font-size: 8px; color: #66806d; }.progress-art b { font-size: 8px; font-weight: 500; color: #3e6250; }
.progress-track { background: #d5e1d6; height: 5px; border-radius: 5px; margin: 9px 0 20px; }.progress-track i { display: block; width: 60%; height: 100%; border-radius: inherit; background: #679674; }.progress-track.second { margin-bottom: 13px; }.progress-track.second i { width: 75%; background: #93b08d; }.progress-art small { font-size: 6px; color: #7b9382; }
.feature-link { display: flex; align-items: center; justify-content: space-between; margin-top: 22px; font-size: 9px; font-weight: 500; }.feature-link .icon { width: 14px; height: 14px; }.feature-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.how-section { display: grid; grid-template-columns: 1fr .9fr; gap: 92px; align-items: center; }
.how-copy h2 { margin-top: 17px; }
.study-steps { list-style: none; padding: 0; margin: 32px 0 22px; display: grid; gap: 23px; }
.study-steps > li { display: flex; gap: 19px; position: relative; }
.study-steps > li:not(:last-child)::after { content: ''; position: absolute; top: 38px; bottom: -15px; left: 17px; width: 1px; background: #dce3d2; }
.step-number { display: grid; place-items: center; width: 35px; height: 35px; border-radius: 50%; background: #edf1e5; border: 1px solid #dee6d2; font-size: 9px; color: #73875e; font-family: var(--mono); flex-shrink: 0; }
.study-steps h3 { font-size: 14px; font-weight: 500; margin-bottom: 4px; }.study-steps p { font-size: 11px; line-height: 1.8; color: var(--text); }
.muted-note { font-size: 9px; color: #88917f; }
.compound-card { background: #f0f1e4; border: 1px solid #e1e4cf; padding: 39px 34px 28px; border-radius: 14px; transform: rotate(1deg); }
.compound-card .eyebrow { font-size: 8px; color: #7f885c; }.compound-card h3 { font-family: var(--serif); font-size: 27px; font-weight: 600; line-height: 1.2; margin-top: 10px; letter-spacing: -.6px; }
.compound-chart { height: 216px; display: flex; gap: 19px; align-items: end; position: relative; padding-inline: 13px; margin-block: 15px 23px; }
.compound-chart > div { height: 100%; flex: 1; display: flex; flex-direction: column; justify-content: end; align-items: center; }.compound-chart i { display: block; width: 100%; border-radius: 5px 5px 0 0; background: #c8d4ad; height: 30%; }.compound-chart > div:nth-child(2) i { height: 41%; background: #b4c399; }.compound-chart > div:nth-child(3) i { height: 56%; background: #98af7c; }.compound-chart > div:nth-child(4) i { height: 77%; background: #77985d; }.compound-chart span { font-size: 8px; color: #8a9376; padding-top: 10px; }.compound-chart svg { position: absolute; inset: 4px 0 25px; width: 100%; height: calc(100% - 29px); fill: none; stroke: #8b9c65; stroke-width: 2; stroke-linecap: round; }
.compound-card > p { font-size: 10px; color: #6e7e58; }.compound-result { display: flex; flex-direction: column; gap: 9px; margin-block: 13px 15px; padding-top: 16px; border-top: 1px solid #d8dec6; }.compound-result > span { font-family: var(--mono); font-size: 12px; color: #70865b; }.compound-result strong { font-family: var(--serif); font-size: 34px; font-weight: 600; line-height: 1.2; letter-spacing: -1px; }.compound-card small { font-size: 8px; color: #8a9478; }
.bilingual-section { background: #f0f2ed; border-block: 1px solid #e4e8df; padding-block: 76px; }
.bilingual-grid { display: grid; grid-template-columns: .9fr 1fr; gap: 110px; align-items: center; }
.translation-card { padding: 27px 30px 23px; background: #fffefa; border: 1px solid #dfe6d7; border-radius: 13px; box-shadow: 0 12px 25px -18px #31543b25; transform: rotate(-1.5deg); }
.translation-header { display: flex; justify-content: space-between; align-items: center; padding-bottom: 18px; margin-bottom: 23px; border-bottom: 1px solid #e8ecdf; font-size: 7px; letter-spacing: 1.2px; color: #89957b; }.translation-header .icon { width: 17px; height: 17px; color: #93a082; }
.language-pills { display: inline-flex; padding: 3px; background: #eef1e8; border-radius: 6px; gap: 3px; }.language-pills button { background: none; border: 0; border-radius: 4px; font-size: 10px; padding: 7px 15px; color: #829070; }.language-pills button[aria-pressed="true"] { background: white; color: #355b36; box-shadow: 0 2px 4px #243f2310; }
.term-index { display: block; font-family: var(--mono); font-size: 7px; letter-spacing: .7px; margin-top: 25px; color: #9ca18e; }.translation-card h3 { font-family: var(--serif); font-weight: 600; font-size: 30px; line-height: 1.25; letter-spacing: -.8px; margin-top: 9px; min-height: 75px; }.translation-card > p { font-size: 11px; color: #7c8970; margin-top: 8px; min-height: 40px; }.term-footer { display: flex; align-items: center; gap: 6px; border-top: 1px solid #e8ecdf; padding-top: 18px; margin-top: 24px; font-size: 8px; color: #81906d; }.term-footer .icon { width: 12px; height: 12px; }
.bilingual-copy h2 { margin-top: 15px; }.bilingual-copy > p { font-size: 12px; line-height: 1.95; color: var(--text); margin-block: 20px 25px; max-width: 407px; }.text-link { display: inline-flex; align-items: center; gap: 15px; font-size: 11px; font-weight: 500; }.text-link .icon { width: 15px; height: 15px; }.text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.curriculum-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.course-card { background: #fffefa; padding: 27px 31px; border: 1px solid #dee5d7; border-radius: 12px; }.course-top { display: flex; align-items: center; justify-content: space-between; }.course-code { font-family: var(--mono); font-size: 11px; color: #668354; background: #eef2e5; padding: 7px 10px; border-radius: 5px; }.course-top > .icon { color: #a6b098; width: 19px; height: 19px; }.course-card h3 { font-family: var(--serif); font-weight: 600; font-size: 27px; line-height: 1.25; letter-spacing: -.7px; margin-top: 19px; }.course-count { font-size: 9px; color: #89937c; margin-top: 7px; }.course-card ul { list-style: none; padding: 0; margin: 23px 0 26px; display: grid; gap: 12px; }.course-card li { display: flex; align-items: center; gap: 9px; color: #57674f; font-size: 11px; }.course-card li .icon { width: 13px; height: 13px; color: #98ad7e; }.course-bottom { border-top: 1px solid #e8ebdf; padding-top: 17px; }.course-bottom > span { display: block; font-size: 8px; color: #8b957e; margin-bottom: 6px; }.course-bottom > a { display: flex; justify-content: space-between; gap: 15px; align-items: center; font-size: 10px; font-weight: 500; }.course-bottom .icon { width: 15px; height: 15px; }.course-bottom a:hover { text-decoration: underline; }.course-card:nth-child(2) .course-code { background: #eeedf4; color: #837794; }
.curriculum-note { display: flex; gap: 9px; align-items: start; margin-top: 21px; font-size: 9px; color: #7e8974; line-height: 1.8; max-width: 820px; }.curriculum-note .icon { width: 14px; height: 14px; margin-top: 2px; }
.privacy-card { display: grid; grid-template-columns: 1fr 1fr; gap: 75px; padding: 49px 53px; border: 1px solid #dce4d3; background: #ecf0e5; border-radius: 13px; }.privacy-card h2 { margin-top: 15px; font-size: 38px; }.privacy-card > div:first-child > p { color: #6d7c62; font-size: 11px; line-height: 1.9; margin-block: 17px 23px; max-width: 340px; }.privacy-points { display: grid; gap: 25px; align-content: center; }.privacy-points > div { display: flex; align-items: start; gap: 15px; }.privacy-points > div > .icon { width: 21px; height: 21px; color: #7e9665; margin-top: 3px; }.privacy-points h3 { font-size: 12px; font-weight: 500; margin-bottom: 5px; }.privacy-points p { font-size: 10px; line-height: 1.8; color: #6d7c62; }
.faq-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 84px; }.faq-section h2 { font-size: 36px; margin-top: 17px; max-width: 290px; }.faq-list details { border-bottom: 1px solid #e1e7d7; }.faq-list details:first-child { border-top: 1px solid #e1e7d7; }.faq-list summary { list-style: none; cursor: pointer; padding: 20px 0; display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: 12px; font-weight: 500; }.faq-list summary::-webkit-details-marker { display: none; }.faq-plus { flex-shrink: 0; font-size: 18px; font-weight: 400; color: #95a284; transition: transform .2s; }.faq-list details[open] .faq-plus { transform: rotate(45deg); }.faq-list details > p { padding: 0 26px 21px 0; font-size: 11px; line-height: 1.9; color: var(--text); }
.cta-section { padding-bottom: 78px; }.cta-panel { position: relative; overflow: hidden; padding: 62px 40px 53px; background: #254d3c; border-radius: 14px; text-align: center; color: #fbfcf4; isolation: isolate; }.cta-panel .eyebrow { color: #b2c5a5; font-size: 9px; }.cta-panel h2 { font-size: 46px; margin-top: 18px; font-weight: 600; }.cta-panel > p { color: #b9cbb2; font-size: 12px; margin-block: 18px 26px; }.cta-note { display: block; font-size: 8px; color: #b6c9ad; margin-top: 17px; }.cta-decoration { position: absolute; z-index: -1; inset: -220px -180px; background: repeating-radial-gradient(ellipse at 50% 90%, transparent 0, transparent 65px, #b3cfab12 66px, transparent 67px); transform: rotate(-15deg); }
.site-footer { border-top: 1px solid #e1e5d9; background: #f8f9f2; }.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 45px; padding-block: 50px 42px; }.footer-brand .brand { font-size: 19px; }.footer-brand .brand-symbol { width: 30px; height: 30px; }.footer-brand p { font-size: 10px; color: #7c8970; margin-top: 17px; }.footer-domain { display: block; font-size: 9px; color: #8f9885; margin-top: 6px; }.footer-links { display: flex; flex-direction: column; align-items: start; gap: 10px; }.footer-links h3 { font-weight: 500; font-size: 11px; margin-bottom: 4px; }.footer-links a { font-size: 10px; color: #7b866e; }.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 20px; border-top: 1px solid #e5e9dc; padding-block: 20px 26px; color: #8c9681; font-size: 8px; }.built-label { display: flex; align-items: center; gap: 6px; }.built-label i { width: 5px; height: 5px; border-radius: 50%; background: #86a26d; }
.page-hero { max-width: 900px; padding-block: 91px 75px; text-align: center; }.page-hero h1 { font-family: var(--serif); font-size: clamp(40px, 5vw, 64px); font-weight: 600; letter-spacing: -2px; line-height: 1.1; margin-top: 20px; }.page-hero > p { color: var(--text); max-width: 650px; margin: 25px auto 27px; font-size: 14px; line-height: 1.9; }.about-body { max-width: 970px; }.story-grid { display: grid; grid-template-columns: 90px 1fr; gap: 35px; padding-block: 40px; border-top: 1px solid var(--line); }.story-number { font-family: var(--mono); font-size: 15px; color: #a1ad91; padding-top: 6px; }.story-grid h2 { font-size: 31px; }.story-grid p { color: var(--text); font-size: 13px; line-height: 1.9; margin-top: 15px; }.status-card { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; padding: 34px; background: #edf1e5; border: 1px solid #dce5d1; border-radius: 12px; margin-top: 30px; }.status-card h2 { font-size: 29px; margin-top: 10px; }.status-card ul { display: grid; gap: 12px; margin: 0; list-style: none; padding: 0; }.status-card li { display: flex; gap: 10px; align-items: start; font-size: 12px; }.status-card .icon { width: 15px; height: 15px; margin-top: 3px; color: #7e9867; }.roadmap-section { padding-block: 70px 50px; }.roadmap-section h2 { margin-block: 15px; font-size: 36px; }.roadmap-section > p { font-size: 12px; color: var(--text); }.roadmap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 28px; }.roadmap-grid article { border: 1px solid var(--line); background: #fffefa; border-radius: 10px; padding: 24px; }.roadmap-status { font-size: 8px; letter-spacing: 1.1px; color: #958a67; }.roadmap-status.is-live { color: #5d814c; }.roadmap-grid h3 { font-family: var(--serif); font-size: 23px; line-height: 1.25; font-weight: 600; margin-block: 15px 12px; }.roadmap-grid p { color: var(--text); font-size: 11px; line-height: 1.9; }.engineering-card { display: flex; gap: 23px; border-block: 1px solid var(--line); padding-block: 32px; }.engineering-card > .icon { width: 36px; height: 36px; margin-top: 6px; color: #8eaa78; }.engineering-card h2 { font-size: 28px; }.engineering-card p { font-size: 12px; line-height: 1.9; margin-top: 13px; color: var(--text); }.disclosure { font-size: 10px; color: #7d8971; margin-block: 25px 75px; }.policy-hero { padding-bottom: 35px; }.policy-content { max-width: 820px; padding-bottom: 90px; }.policy-content > section { display: flex; gap: 28px; padding-block: 30px; border-top: 1px solid var(--line); }.policy-number { font-size: 11px; font-family: var(--mono); color: #95a383; padding-top: 6px; }.policy-content h2 { font-family: var(--sans); font-size: 20px; letter-spacing: -.5px; }.policy-content p { margin-top: 13px; color: var(--text); font-size: 13px; line-height: 1.9; }.policy-content > a { margin-top: 20px; }.not-found { max-width: 700px; padding: 70px 28px; margin: auto; }.not-found > .brand { display: flex; margin-bottom: 90px; }.not-found h1 { font-family: var(--serif); font-size: clamp(38px, 5vw, 60px); font-weight: 600; line-height: 1.15; margin-block: 20px; letter-spacing: -1.5px; }.not-found > p { color: var(--text); }
@media (min-width: 1500px) { .hero { padding-block: 102px 83px; }.hero h1 { font-size: 66px; }.hero-visual { margin-left: 12px; } }
@media (max-width: 1150px) {
  .container { width: calc(100% - 64px); }.nav-inner { gap: 20px; }.desktop-nav { gap: 18px; }.nav-actions { gap: 14px; }.brand { font-size: 19px; }.hero { gap: 24px; }.hero h1 { font-size: 53px; }.hero-description { font-size: 13px; }.hero-actions { gap: 9px; }.hero-actions .button { padding-inline: 15px; font-size: 11px; }.preview-body { padding-inline: 15px; }.preview-rail { width: 41px; }.preview-metrics > div { padding-inline: 8px; }.preview-metrics > div > span { font-size: 6px; }.preview-panel h2 { font-size: 14px; }.interactive-flashcard h2 { font-size: 22px; }.goal-card { gap: 6px; }.goal-ring { width: 43px; height: 43px; }.goal-ring > span { font-size: 13px; }.feature-grid { gap: 12px; }.feature-card { padding: 19px 15px; }.feature-card h3 { font-size: 21px; }.feature-art { padding-inline: 10px; }.proof-grid > div { padding-left: 24px; gap: 12px; }.proof-grid strong { font-size: 32px; }.proof-grid > div:last-child strong { font-size: 24px; }.how-section { gap: 55px; }.bilingual-grid { gap: 65px; }.privacy-card { padding: 39px; gap: 45px; }.faq-section { gap: 55px; }
}
@media (max-width: 950px) {
  .desktop-nav { display: none; }.nav-inner { min-height: 76px; }.menu-toggle { display: flex; }.hero { grid-template-columns: 1fr 1fr; padding-block: 65px 55px; }.hero h1 { font-size: 45px; letter-spacing: -1.8px; }.hero-eyebrow { font-size: 8px; letter-spacing: 1.2px; }.announcement { font-size: 8px; gap: 7px; }.announcement .icon { margin-left: 0; }.hero-trust { font-size: 8px; gap: 8px; }.preview-body { padding-inline: 11px; }.preview-shell { min-height: 392px; }.preview-top { font-size: 8px; }.preview-panel h2 { font-size: 13px; }.preview-metrics { gap: 5px; }.preview-metrics > div { padding: 8px 6px; }.preview-metrics b { font-size: 19px; }.preview-metrics small { margin-left: 2px; }.preview-metrics .streak-icon .icon { width: 11px; height: 11px; }.lesson-orb { width: 45px; height: 45px; right: 8px; top: 42px; }.lesson-orb span { font-size: 24px; }.lesson-preview { padding: 11px; }.lesson-preview h3 { font-size: 11px; }.activity-row { gap: 8px; }.bars { gap: 5px; }.goal-card { flex-direction: column; justify-content: center; padding-top: 5px; text-align: center; }.goal-card > div:last-child { font-size: 6px; }.goal-ring { width: 42px; height: 42px; }.window-caption { font-size: 6px; }.caption-right { display: none; }.floating-note { padding: 11px 13px; left: 10px; gap: 8px; }.floating-note strong { font-size: 9px; }.note-check { margin-left: 7px; }.proof-grid > div { flex-direction: column; align-items: start; gap: 9px; }.proof-grid span { max-width: none; }.feature-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }.feature-card { padding: 25px; }.feature-card h3 { font-size: 26px; }.feature-card > p { font-size: 12px; }.feature-art { min-height: 160px; padding-inline: 20px; }.feature-link { font-size: 11px; }.mini-tag { font-size: 8px; }.lesson-art p { font-size: 9px; }.srs-art > svg { height: 75px; }.sample-answer { font-size: 11px; }.answer-explanation { font-size: 8px; }.progress-art > div:not(.progress-track), .progress-art b { font-size: 11px; }.progress-art small { font-size: 8px; }.how-section { gap: 35px; }.compound-card { padding: 30px 23px; }.compound-card h3 { font-size: 24px; }.bilingual-grid { gap: 40px; }.translation-card { padding: 24px; }.translation-card h3 { font-size: 26px; }.privacy-card { padding: 35px; gap: 35px; }.privacy-card h2 { font-size: 32px; }.footer-top { gap: 30px; }.footer-brand .brand { font-size: 17px; }.footer-brand .brand-symbol { width: 26px; height: 26px; }.roadmap-grid { gap: 12px; }.roadmap-grid article { padding: 20px; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 88px; }.container { width: calc(100% - 40px); }.nav-inner { min-height: 72px; gap: 10px; }.brand { font-size: 20px; }.brand-symbol { width: 32px; height: 32px; }.nav-actions { gap: 15px; }.nav-actions > .button { display: none; }.language-link { font-size: 10px; }.menu-toggle { width: 39px; height: 39px; }.hero { display: flex; flex-direction: column; align-items: stretch; gap: 34px; padding-block: 43px 44px; }.hero-copy { max-width: 540px; }.announcement { font-size: 9px; }.hero-eyebrow { margin-top: 27px; }.hero h1 { font-size: clamp(42px, 9.7vw, 64px); line-height: 1.12; letter-spacing: -2px; }.hero-description { font-size: 13px; max-width: 440px; line-height: 1.9; margin-top: 20px; }.hero-actions { margin-top: 23px; gap: 10px; }.hero-actions .button { min-height: 49px; padding-inline: 18px; font-size: 11px; }.hero-trust { font-size: 9px; margin-top: 17px; gap: 12px; }.hero-visual { width: min(100%, 530px); align-self: center; padding: 10px 6px 27px; }.hero-visual::before { inset: 0 0 -20px; }.product-window { transform: rotate(-.6deg); }.preview-shell { min-height: 405px; }.preview-body { padding: 18px 19px 17px; }.preview-rail { width: 44px; }.preview-top { font-size: 9px; }.preview-panel h2 { font-size: 16px; }.preview-tabs button { font-size: 10px; padding-bottom: 9px; }.preview-metrics { margin-top: 16px; gap: 7px; }.preview-metrics > div { padding: 10px 9px; }.preview-metrics > div > span { font-size: 7px; }.preview-metrics b { font-size: 23px; }.preview-metrics small { margin-left: 5px; }.lesson-preview { padding: 15px; }.lesson-preview h3 { font-size: 12px; }.lesson-preview p { font-size: 9px; }.lesson-preview a { font-size: 9px; }.lesson-orb { width: 54px; height: 54px; right: 14px; top: 35px; }.activity-row { gap: 13px; }.goal-card { flex-direction: row; text-align: left; gap: 8px; }.goal-ring { width: 50px; height: 50px; }.goal-card > div:last-child { font-size: 7px; }.bars { gap: 8px; height: 70px; }.bars span { font-size: 7px; }.window-caption { font-size: 7px; }.caption-right { display: block; font-size: 5px; }.floating-note { padding: 13px 15px; left: 22px; gap: 12px; }.floating-note strong { font-size: 10px; }.floating-note div > span { font-size: 6px; }.floating-note > .icon { width: 25px; height: 25px; }.interactive-flashcard h2 { font-size: 24px; }.mini-quiz h2 { font-size: 17px; }.quiz-options button { font-size: 12px; padding-block: 10px; }#quiz-feedback { font-size: 10px; }.proof-strip { padding-top: 24px; padding-bottom: 34px; }.proof-label { font-size: 7px; gap: 12px; letter-spacing: 1px; }.proof-grid { grid-template-columns: 1fr 1fr; row-gap: 27px; margin-top: 25px; }.proof-grid > div { padding-left: 22px; }.proof-grid > div:nth-child(odd) { padding-left: 0; }.proof-grid > div:nth-child(even) { border-right: 0; }.proof-grid strong { font-size: 33px; }.proof-grid > div:last-child strong { font-size: 28px; }.proof-grid span { font-size: 10px; }.source-note { font-size: 8px; line-height: 1.8; margin-top: 22px; }.problem-section { padding-block: 45px 58px; }.problem-section .eyebrow { font-size: 8px; letter-spacing: 1.2px; }.problem-section h2 { font-size: 33px; letter-spacing: -1.2px; margin-block: 16px; }.problem-section > p { font-size: 12px; }.section-pad { padding-block: 64px; }.section-heading { display: block; margin-bottom: 28px; }.section-heading h2 { margin-top: 12px; font-size: 34px; }.section-heading > p { max-width: 420px; margin-top: 18px; padding-bottom: 0; font-size: 12px; }.eyebrow { font-size: 8px; letter-spacing: 1.5px; }.feature-grid { gap: 13px; }.feature-card { padding: 20px 17px; }.feature-card h3 { font-size: 23px; }.feature-card > p { font-size: 11px; }.feature-art { padding-inline: 12px; }.mini-tag { font-size: 6px; }.lesson-art p { font-size: 7px; }.feature-link { font-size: 9px; }.answer-explanation { font-size: 7px; }.how-section { grid-template-columns: 1fr; gap: 35px; }.how-copy h2 { font-size: 35px; }.study-steps { gap: 24px; }.study-steps h3 { font-size: 15px; }.study-steps p { font-size: 12px; }.muted-note { font-size: 9px; }.compound-card { transform: none; padding: 30px; max-width: 470px; width: 100%; margin: auto; }.compound-card h3 { font-size: 27px; }.compound-chart { height: 220px; gap: 23px; padding-inline: 20px; }.compound-card > p { font-size: 11px; }.bilingual-section { padding-block: 60px; }.bilingual-grid { display: flex; flex-direction: column-reverse; gap: 35px; align-items: stretch; }.bilingual-copy h2 { font-size: 35px; }.bilingual-copy > p { font-size: 12px; }.translation-card { margin-inline: 5px; padding: 25px; }.translation-card h3 { font-size: 30px; min-height: auto; margin-top: 13px; }.translation-card > p { min-height: 38px; margin-top: 14px; }.term-footer { font-size: 8px; }.curriculum-grid { grid-template-columns: 1fr; gap: 18px; }.course-card { padding: 25px; }.course-card h3 { font-size: 28px; }.course-card li { font-size: 12px; }.course-bottom > a { font-size: 11px; }.curriculum-note { font-size: 9px; }.privacy-card { grid-template-columns: 1fr; gap: 33px; padding: 29px 25px; }.privacy-card h2 { font-size: 34px; }.privacy-card > div:first-child > p { font-size: 12px; max-width: none; }.privacy-points h3 { font-size: 13px; }.privacy-points p { font-size: 11px; }.faq-section { grid-template-columns: 1fr; gap: 25px; }.faq-section h2 { max-width: none; font-size: 34px; }.faq-list summary { font-size: 12px; padding-block: 18px; }.faq-list details > p { font-size: 12px; }.cta-section { padding-bottom: 50px; }.cta-panel { padding: 45px 20px 38px; }.cta-panel h2 { font-size: 35px; letter-spacing: -1.2px; }.cta-panel > p { font-size: 12px; }.cta-note { font-size: 8px; line-height: 1.8; }.footer-top { grid-template-columns: 1fr 1fr 1fr; gap: 30px 16px; padding-block: 36px 30px; }.footer-brand { grid-column: 1 / -1; }.footer-brand .brand { font-size: 20px; }.footer-brand .brand-symbol { width: 31px; height: 31px; }.footer-brand p { margin-top: 13px; }.footer-links h3 { font-size: 11px; }.footer-links a { font-size: 10px; }.footer-bottom { flex-wrap: wrap; gap: 10px; font-size: 8px; }.built-label { display: none; }.page-hero { padding-block: 55px 42px; }.page-hero h1 { font-size: 43px; letter-spacing: -1.7px; }.page-hero > p { font-size: 12px; }.story-grid { grid-template-columns: 35px 1fr; gap: 15px; padding-block: 28px; }.story-grid h2 { font-size: 27px; }.story-grid p { font-size: 12px; }.story-number { font-size: 10px; }.status-card { grid-template-columns: 1fr; gap: 25px; padding: 25px; }.status-card li { font-size: 11px; }.roadmap-section { padding-top: 50px; }.roadmap-grid { grid-template-columns: 1fr; }.roadmap-grid article { padding: 24px; }.roadmap-grid h3 { font-size: 26px; }.roadmap-grid p { font-size: 12px; }.engineering-card { gap: 15px; }.engineering-card > .icon { width: 25px; height: 25px; }.engineering-card h2 { font-size: 26px; }.disclosure { margin-bottom: 50px; }.policy-hero { padding-bottom: 20px; }.policy-content { padding-bottom: 55px; }.policy-content > section { gap: 18px; }.policy-content h2 { font-size: 18px; }.policy-content p { font-size: 12px; }
}
@media (max-width: 420px) {
  .container { width: calc(100% - 36px); }.brand { font-size: 19px; }.nav-actions { gap: 12px; }.hero h1 { font-size: 43px; }.hero-actions .button { padding-inline: 13px; gap: 9px; font-size: 10px; }.hero-trust { font-size: 8px; gap: 8px; }.preview-body { padding: 15px 12px; }.preview-rail { width: 35px; gap: 21px; }.preview-rail .brand-symbol { width: 23px; height: 23px; }.preview-panel h2 { font-size: 14px; }.preview-metrics > div { padding-inline: 7px; }.preview-metrics > div > span { font-size: 6px; }.preview-metrics b { font-size: 21px; }.preview-shell { min-height: 401px; }.lesson-preview { padding: 12px; }.lesson-preview h3 { font-size: 11px; }.lesson-preview p { font-size: 8px; }.lesson-orb { width: 43px; height: 43px; right: 9px; top: 42px; }.goal-ring { width: 41px; height: 41px; }.goal-card { gap: 6px; }.goal-card > div:last-child { font-size: 6px; }.goal-card b { font-size: 10px; }.goal-ring > span { font-size: 12px; }.activity-row { gap: 8px; }.bars { gap: 6px; }.preview-tabs { gap: 12px; }.preview-tabs button { font-size: 9px; }.caption-right { font-size: 4.5px; letter-spacing: .5px; }.window-caption { font-size: 6px; }.floating-note { left: 15px; gap: 8px; padding: 12px; }.floating-note strong { font-size: 9px; }.interactive-flashcard h2 { font-size: 23px; }.mini-quiz h2 { font-size: 15px; }.feature-grid { grid-template-columns: 1fr; gap: 17px; }.feature-card { padding: 25px; }.feature-card h3 { font-size: 28px; }.feature-card > p { font-size: 12px; }.feature-art { padding: 20px; }.mini-tag { font-size: 8px; }.art-formula { font-size: 30px; }.fraction { font-size: 20px; }.lesson-art p { font-size: 9px; }.feature-link { font-size: 11px; }.sample-answer { font-size: 12px; }.answer-explanation { font-size: 9px; }.progress-art > div:not(.progress-track), .progress-art b { font-size: 11px; }.progress-art small { font-size: 8px; }.compound-card { padding: 26px; }.compound-chart { padding-inline: 10px; }.proof-label { font-size: 6.5px; }.page-hero h1 { font-size: 38px; }
}
html[lang="en"] .hero h1 { font-size: clamp(42px, 4.1vw, 58px); }
@media (max-width: 760px) { html[lang="en"] .hero h1 { font-size: clamp(38px, 8.3vw, 56px); } }
@media (max-width: 420px) { html[lang="en"] .hero h1 { font-size: 37px; letter-spacing: -1.6px; } }
@media (max-width: 360px) { html[lang="en"] .hero h1 { font-size: 32px; }.hero h1 { font-size: 38px; }.hero-actions .button { font-size: 9px; padding-inline: 11px; gap: 7px; }.preview-metrics > div > span { font-size: 5.5px; }.preview-tabs { gap: 10px; }.preview-tabs button { font-size: 8px; }.floating-note strong { font-size: 8px; }.floating-note div > span { font-size: 5px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; }.button:hover, .feature-card:hover { transform: none; } }
@media (prefers-contrast: more) { :root { --text: #30482e; --muted: #3c5236; }.eyebrow, .source-note, .muted-note, .curriculum-note { color: #3c5236; } }
@media print { .site-header, .hero-visual, .cta-section, .site-footer, .skip-link { display: none; }.container { width: 100%; }.section-pad { padding-block: 25px; }.hero { display: block; padding-block: 25px; }body { background: white; }a { text-decoration: underline; } }