/* Homepage only. Deliberately independent of main.css and admin styles. */
:root{--hp-brand:#13b391;--hp-accent:#13b391;--hp-ink:#151b19;--hp-paper:#fff;--hp-soft:#f5f7f5;--hp-muted:#59615d;--hp-line:#dce2dd;--hp-mint:#e9f6f0;--hp-card:#fff;--hp-dark:#151b19;--hp-heading:'Space Grotesk',Arial,sans-serif;--hp-body:Inter,Arial,sans-serif;--hp-radius:18px;color-scheme:light}
html[data-theme=color2]{--hp-ink:#f1f5f2;--hp-paper:#111815;--hp-soft:#18231e;--hp-muted:#aebdb4;--hp-line:#35453b;--hp-mint:#203e32;--hp-card:#1d2922;color-scheme:dark}
html[data-theme=color3]{--hp-paper:#fff9fc;--hp-soft:#fcf0f6;--hp-mint:#f8e6ef;--hp-line:#e6d6de;--hp-accent:#f0a6c5}
html[data-theme=color4]{--hp-paper:#f8fbff;--hp-soft:#edf3fb;--hp-mint:#e4effc;--hp-line:#d3deec;--hp-accent:#a8c9f9}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--hp-paper);color:var(--hp-ink);font-family:var(--hp-body);font-size:15px;line-height:1.65}button,input,select{font:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}button,summary,select{cursor:pointer}a{color:inherit;text-decoration:none}button{color:inherit}img{display:block;max-width:100%}svg{display:block}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--hp-heading);line-height:1.08;letter-spacing:-.045em}h2{font-size:clamp(34px,4.1vw,58px);font-weight:500}h3{font-size:24px;font-weight:500}p{color:var(--hp-muted)}button:disabled{cursor:not-allowed;opacity:.5}[hidden]{display:none!important}:focus-visible{outline:3px solid var(--hp-brand);outline-offset:5px}.wrap{width:min(1240px,calc(100% - 96px));margin-inline:auto}.section-space{padding-block:104px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:.16em;line-height:1.5;color:var(--hp-ink);margin-bottom:25px}.serif-word{font-family:Georgia,serif;font-style:italic;font-weight:400;letter-spacing:-.065em}.text-link{font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:18px;min-height:44px}.text-link span{transition:transform .2s}.text-link:hover span{transform:translate(3px,-3px)}.button{display:inline-flex;align-items:center;justify-content:center;gap:28px;padding:17px 23px;background:var(--hp-accent);color:#101b17;border:1px solid transparent;border-radius:9px;font-weight:700;font-size:13px;line-height:1.5;min-height:52px;transition:transform .2s,box-shadow .2s,background .2s;text-align:center}.button:hover{transform:translateY(-3px);box-shadow:0 7px 0 color-mix(in srgb,var(--hp-ink) 10%,transparent)}.button span{font-size:20px;line-height:1}.button-small{min-height:43px;padding:10px 16px;font-size:12px;gap:18px}.button-outline{border-color:var(--hp-line);background:transparent;color:var(--hp-ink)}.button-black{background:#151b19;color:#fff}.skip-link{position:fixed;top:8px;left:8px;z-index:1000;padding:12px;background:var(--hp-paper);transform:translateY(-160%)}.skip-link:focus{transform:none}
/* Navigation */
.site-header{position:sticky;top:0;z-index:50;background:var(--hp-paper);border-bottom:1px solid var(--hp-line)}.nav-shell{height:91px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{flex:0 0 130px}.brand img{width:130px;height:61px;object-fit:contain}.brand-dark{display:none}html[data-theme=color2] .brand-light{display:none}html[data-theme=color2] .brand-dark{display:block}.nav-desktop{display:flex;gap:25px;align-items:center}.nav-desktop a{font-size:12px;font-weight:500;padding:12px 0;position:relative;white-space:nowrap}.nav-desktop a:after{content:'';position:absolute;height:2px;background:var(--hp-brand);bottom:3px;left:0;width:100%;transform:scaleX(0);transform-origin:left;transition:transform .2s}.nav-desktop a:hover:after,.nav-desktop a[aria-current]:after{transform:scaleX(1)}.nav-actions{display:flex;align-items:center;gap:15px}.theme-menu{position:relative}.theme-menu summary{list-style:none;display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--hp-line);border-radius:50%}.theme-menu summary::-webkit-details-marker{display:none}.theme-menu svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.4}.theme-options{position:absolute;right:0;top:54px;background:var(--hp-card);border:1px solid var(--hp-line);border-radius:14px;padding:14px;width:170px;box-shadow:0 12px 40px #0002}.theme-options>span{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;display:block;padding:5px 8px}.theme-options button{display:flex;align-items:center;gap:10px;border:0;background:none;padding:9px;width:100%;border-radius:6px;font-size:13px;text-align:left}.theme-options button:hover,.theme-options button[aria-pressed=true]{background:var(--hp-soft)}.swatch{width:15px;height:15px;border:1px solid #7775;border-radius:50%}.swatch.light{background:#fff}.swatch.dark{background:#18231e}.swatch.pink{background:#f0a6c5}.swatch.blue{background:#a8c9f9}.menu-toggle{display:none;border:1px solid var(--hp-line);background:none;width:44px;height:44px;border-radius:8px;padding:12px}.menu-toggle span{display:block;width:18px;height:1px;background:currentColor;margin:5px 0;transition:transform .2s}.menu-toggle[aria-expanded=true] span:first-child{transform:translateY(3px) rotate(45deg)}.menu-toggle[aria-expanded=true] span:last-child{transform:translateY(-3px) rotate(-45deg)}
/* Opening composition */
.hero{display:grid;grid-template-columns:1.08fr 1fr;gap:70px;align-items:center;padding-block:65px 68px;min-height:660px}.hero-copy{padding-block:20px}.hero .eyebrow{display:flex;align-items:center;gap:9px;font-size:9px;letter-spacing:.12em;margin-bottom:24px}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--hp-brand);box-shadow:0 0 0 4px #13b39115;flex-shrink:0}.hero h1{font-size:clamp(64px,7.65vw,108px);line-height:.99;font-weight:500;letter-spacing:-.075em;margin-bottom:32px}.click-word{position:relative;color:var(--hp-brand)}.click-word svg{position:absolute;bottom:-9px;left:0;width:100%;height:17px;stroke:var(--hp-brand);stroke-width:3;fill:none}.hero-description{max-width:440px;font-size:15px;line-height:1.85}.hero-actions{display:flex;align-items:center;gap:26px;margin-top:31px}.hero-footnote{display:flex;gap:18px;font-size:10px;color:var(--hp-muted);margin-top:22px}.hero-art{position:relative;isolation:isolate;background:var(--hp-accent);color:#11372d;border-radius:140px 18px 18px 18px;height:520px;--pointer-x:0px;--pointer-y:0px;overflow:hidden}.math-world{position:absolute;width:100%;height:100%;inset:0;transform:translate(var(--pointer-x),var(--pointer-y));transition:transform .4s ease-out}.art-caption{position:absolute;top:30px;left:32px;font-size:8px;font-weight:700;letter-spacing:.13em}.art-bottom{position:absolute;bottom:23px;right:25px;font-size:8px;font-weight:700;letter-spacing:.14em;display:flex;align-items:center;gap:14px}.art-bottom span{font-size:20px}.math-sticker{position:absolute;z-index:1}.sticker-pi{left:56px;top:102px;font-family:Georgia,serif;font-size:68px;transform:rotate(-16deg);line-height:1}.sticker-root{bottom:57px;left:57px;font-family:Georgia,serif;font-style:italic;font-size:23px;transform:rotate(-8deg)}.warmup{position:absolute;left:10%;right:13%;top:35%;background:#fff;color:#151b19;border:1px solid #151b19;border-radius:13px;padding:20px 23px 16px;box-shadow:7px 9px 0 #153d2e;transform:rotate(-5deg);transition:transform .35s}.warmup:hover,.warmup:focus-within{transform:rotate(-2deg)}.warmup-top{display:flex;align-items:center;justify-content:space-between;font-size:8px;font-weight:700;letter-spacing:.1em}.warmup-top>span:first-child{display:flex;align-items:center;gap:7px}.mini-dot{width:6px;height:6px;background:var(--hp-brand);border-radius:50%;display:inline-block}.warmup-question{font-size:12px;color:#616b65;margin-top:18px}.equation{font-family:Georgia,serif;font-style:italic;color:#151b19;font-size:44px;line-height:1.3;margin:5px 0 17px;letter-spacing:0}.equation sup{font-size:.5em}.equation>span{color:#08795f}.warmup-options{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.warmup-options button{min-height:44px;border:1px solid #d4ddd6;border-radius:7px;background:#f5f7f5;color:#151b19;font-size:21px;font-family:Georgia,serif;transition:background .2s,transform .2s}.warmup-options button:hover{background:#dff5ea;transform:translateY(-2px)}.warmup-options button.is-correct{background:#b7f2d7;border-color:#08795f}.warmup-options button.is-wrong{background:#fff0db;border-color:#ad7521}.warmup-feedback{min-height:30px;line-height:1.4;font-size:10px;margin-top:12px;color:#58645c}.warmup.solved .equation>span{color:#08795f}.proof-strip{border-block:1px solid var(--hp-line);background:var(--hp-soft)}.proof-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:24px}.proof-inner p{font-size:12px;white-space:nowrap}.proof-inner strong{color:var(--hp-ink);font-weight:600}.proof-star{font-size:27px;color:var(--hp-brand)}
/* Practice picker */
.resume{border:1px solid var(--hp-line);background:var(--hp-mint);border-radius:14px;margin-top:32px;padding:24px 28px;display:flex;justify-content:space-between;gap:20px;align-items:center}.resume .eyebrow{margin-bottom:6px}.resume h2{font-size:26px}.resume p:last-child{font-size:13px;margin-top:7px}.section-heading{display:flex;justify-content:space-between;gap:40px;align-items:flex-end;margin-bottom:38px}.section-heading>p{max-width:330px;font-size:13px;margin-bottom:5px}.section-heading .eyebrow{margin-bottom:20px}.practice-picker{border:1px solid var(--hp-line);border-radius:var(--hp-radius);padding:28px;background:var(--hp-card)}.picker-top{display:flex;align-items:center;gap:20px;margin-bottom:25px}.picker-top label{font-size:12px;font-weight:600}.picker-top select{background:var(--hp-soft);color:var(--hp-ink);border:1px solid var(--hp-line);border-radius:8px;font-size:12px;padding:10px 36px 10px 13px;min-height:44px;max-width:100%}.picker-hint{margin-left:auto;font-size:11px;color:var(--hp-muted)}.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}.topic-choice{position:relative;display:block;cursor:pointer}.topic-choice input{position:absolute;opacity:0;width:1px;height:1px}.topic-tile{display:flex;flex-direction:column;position:relative;min-height:167px;padding:22px 18px;border:1px solid var(--hp-line);border-radius:11px;background:var(--hp-paper);transition:background .2s,border-color .2s,transform .2s}.topic-choice:hover .topic-tile{transform:translateY(-4px);border-color:var(--hp-brand)}.topic-choice input:checked+.topic-tile{background:var(--hp-mint);border-color:var(--hp-brand);box-shadow:inset 0 0 0 1px var(--hp-brand)}.topic-choice input:focus-visible+.topic-tile{outline:3px solid var(--hp-brand);outline-offset:4px}.topic-symbol{font-family:Georgia,serif;font-size:35px;line-height:1;margin-bottom:22px;color:var(--hp-ink)}.topic-tile>span:nth-child(2){font-size:13px;font-weight:600}.topic-tile small{display:block;color:var(--hp-muted);font-size:9px;font-weight:400;margin-top:5px}.topic-arrow{position:absolute;right:16px;top:17px;color:var(--hp-muted);font-size:15px}.picker-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:26px}.picker-bottom p{font-size:12px}.picker-bottom strong{color:var(--hp-ink)}.under-note{text-align:center;font-size:11px;margin-top:18px}
/* Demonstration */
.demo-section{background:var(--hp-dark);color:#f7faf7}.demo-section p{color:#aebeb4}.demo-section .eyebrow{color:#79dac0}.demo-section h2{font-size:clamp(36px,4.2vw,57px)}.demo-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:90px;align-items:center}.demo-copy>p:not(.eyebrow){max-width:315px;margin-top:24px;font-size:13px}.steps{list-style:none;padding:0;margin:30px 0}.steps li{display:flex;gap:20px;align-items:flex-start;padding:17px 0;border-bottom:1px solid #ffffff18}.steps li>span{font-size:11px;color:#79dac0;padding-top:3px;font-weight:600}.steps h3{font-size:17px;letter-spacing:-.02em}.steps p{font-size:12px;line-height:1.7;margin-top:8px;max-width:285px}.demo-copy>.text-link{font-size:12px;color:#bcebd7}.demo-window{background:#fff;color:#151b19;border-radius:14px;overflow:hidden;border:1px solid #fff2;box-shadow:12px 12px 0 #ffffff09;transform:rotate(1deg)}.demo-toolbar{padding:15px 20px;background:#edf2ed;display:flex;justify-content:space-between;align-items:center;font-size:8px;font-weight:600;letter-spacing:.12em}.demo-toolbar>span:first-child{display:flex;gap:5px}.demo-toolbar i{width:5px;height:5px;border-radius:50%;background:#9eaca2}.demo-question-meta{padding:23px 24px 18px;display:flex;flex-direction:column;gap:6px}.demo-question-meta>span{font-size:10px;color:#606b63}.demo-question-meta strong{font-size:17px;font-family:var(--hp-heading)}.demo-question-meta strong span{font-weight:400;color:#606b63}.demo-tabs{margin:0 24px 16px;display:grid;grid-template-columns:repeat(3,1fr);gap:3px;background:#f0f3ef;border-radius:7px;padding:4px}.demo-tabs button{border:0;background:none;border-radius:5px;color:#516257;padding:11px 5px;font-size:10px;font-weight:600;min-height:41px}.demo-tabs button[aria-selected=true]{background:#151b19;color:#fff}.preview-panel{height:300px;overflow:auto;overscroll-behavior:contain;margin:0 24px 20px;border:1px solid #e0e5df;border-radius:4px;background:white}.preview-panel img{width:100%;height:auto;display:block;min-height:150px;object-fit:contain;object-position:top}.demo-bottom{border-top:1px solid #e0e5df;padding:15px 24px;display:flex;justify-content:space-between;gap:12px;font-size:10px}.demo-bottom>span{color:#647167}.demo-bottom a{font-weight:600;min-height:30px;display:inline-flex;align-items:center;gap:14px}
/* Tools */
.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.tool-card{display:flex;flex-direction:column;padding:28px;border:1px solid var(--hp-line);border-radius:16px;background:var(--hp-soft);transition:transform .25s,box-shadow .25s}.tool-card:hover{transform:translateY(-6px);box-shadow:0 12px 28px #0000000b}.tool-number{display:flex;justify-content:space-between;align-items:center;font-size:11px}.tool-number>span{font-size:22px}.tool-art{height:130px;display:flex;align-items:center;font-family:Georgia,serif;font-style:italic;font-size:63px;letter-spacing:-.06em;gap:10px}.tool-card h3{font-size:25px;max-width:240px;margin-bottom:14px}.tool-card p{font-size:12px;line-height:1.8;max-width:260px;margin-bottom:25px}.tool-tag{align-self:flex-start;margin-top:auto;font-size:9px;letter-spacing:.015em;border:1px solid var(--hp-line);border-radius:30px;padding:5px 10px}.tool-dark{background:#151b19;color:#fff;border-color:#151b19}.tool-dark p{color:#b9c4bc}.tool-dark .tool-tag{border-color:#ffffff35;color:#d1ddd4}.tool-dark .tool-art{font-family:var(--hp-heading);font-style:normal;font-size:30px;color:#9be2c6;letter-spacing:0}.circled-letter{display:grid;place-items:center;border:1px solid #9be2c6;border-radius:50%;height:49px;width:49px;transform:rotate(-12deg)}.tool-mint{background:var(--hp-mint)}.bars{gap:10px;align-items:flex-end;padding-block:28px}.bars i{width:23px;background:var(--hp-brand);border:1px solid #105842;transform:skewY(-10deg);border-radius:3px 3px 0 0}.bars i:nth-child(1){height:18px}.bars i:nth-child(2){height:28px}.bars i:nth-child(3){height:40px}.bars i:nth-child(4){height:57px}.bars i:nth-child(5){height:73px}
/* Stories and tutor */
.reviews-section{background:var(--hp-soft);border-block:1px solid var(--hp-line)}.review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:start}.review-card{background:var(--hp-card);border:1px solid var(--hp-line);border-radius:14px;padding:28px;display:flex;flex-direction:column;min-height:315px}.review-stars{font-size:12px;letter-spacing:3px;color:#078466;margin-bottom:22px}.review-result{font-family:var(--hp-heading);font-size:52px;letter-spacing:-.06em;line-height:1.1;color:var(--hp-ink)}.review-context{font-size:10px;margin-top:10px}.review-detail{margin-block:22px}.review-detail summary{font-size:11px;list-style:none;font-weight:600;display:flex;align-items:center;justify-content:space-between;min-height:32px}.review-detail summary::-webkit-details-marker{display:none}.review-detail summary span{font-size:18px}.review-detail[open] summary span{transform:rotate(45deg)}.review-detail blockquote{font-size:12px;color:var(--hp-muted);margin:15px 0 0;line-height:1.9}.review-person{display:flex;align-items:center;gap:11px;padding-top:19px;border-top:1px solid var(--hp-line);margin-top:auto}.review-avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--hp-mint);color:var(--hp-ink);font-size:12px}.review-person strong{display:block;font-size:11px;font-weight:600}.review-person div>span{display:block;font-size:9px;color:var(--hp-muted)}.meet-grid{display:grid;grid-template-columns:1fr 1fr;gap:110px;align-items:center}.portrait-frame{max-width:450px;position:relative;padding:0 35px 25px 0}.portrait-frame:before{position:absolute;content:'';inset:22px 12px 0 22px;background:var(--hp-mint);border-radius:140px 14px 14px 14px;transform:rotate(-3deg)}.portrait-frame img{width:100%;height:460px;object-fit:cover;position:relative;border-radius:140px 14px 14px 14px;filter:saturate(.75)}.portrait-note{position:absolute;right:-26px;bottom:52px;background:var(--hp-accent);color:#151b19;font-family:Georgia,serif;font-style:italic;font-size:20px;line-height:1.25;padding:20px 25px;border:1px solid #152b21;transform:rotate(-7deg);box-shadow:4px 4px 0 #18271c}.portrait-note svg{width:60px;height:30px;margin-left:auto;stroke:currentColor;fill:none;stroke-width:1.5}.meet-copy>p:not(.eyebrow){font-size:14px;max-width:400px;margin-top:23px}.meet-copy>.button{margin-top:28px}.faq-section{border-top:1px solid var(--hp-line)}.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px}.faq-grid>div>p:last-child{margin-top:22px;font-size:13px}.faq-list{border-top:1px solid var(--hp-line)}.faq-list details{border-bottom:1px solid var(--hp-line)}.faq-list summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;font-size:14px;font-weight:500}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary span{font-size:22px;font-weight:400;transition:transform .2s}.faq-list details[open] summary span{transform:rotate(45deg)}.faq-list details p{font-size:13px;padding-bottom:23px;max-width:540px;line-height:1.9}.tuition-section{padding-bottom:85px}.tuition-panel{background:var(--hp-accent);color:#151b19;border-radius:18px;padding:50px 55px;display:flex;align-items:center;justify-content:space-between;gap:35px;position:relative;overflow:hidden}.tuition-panel>div,.tuition-panel>a{position:relative;z-index:1}.tuition-panel p{color:#193c31;font-size:12px;margin-top:23px}.tuition-panel .eyebrow{margin-top:0;font-size:9px;color:#173b30}.tuition-panel h2{font-size:52px}.tuition-panel .button{white-space:nowrap}.tuition-doodle{font-size:300px;line-height:1;position:absolute;right:180px;top:-75px;color:#173b3014}
/* Footer and dialog */
.site-footer{background:#151b19;color:#e6ede8;padding-top:60px}.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:45px;padding-bottom:55px}.footer-brand{display:inline-block;font-family:var(--hp-heading);font-weight:600;font-size:26px;letter-spacing:-.05em;color:#55ceac;line-height:1}.footer-brand span{display:block;font-family:Georgia,serif;font-style:italic;color:#fff;font-size:24px;font-weight:400}.footer-top p{font-size:11px;color:#a1b4a7;margin-top:22px;line-height:1.9}.footer-top h2{font-family:var(--hp-body);font-size:9px;font-weight:600;letter-spacing:.1em;color:#a1b4a7;margin-bottom:22px}.footer-top nav a,.footer-social a,.footer-top button{display:block;font-size:11px;color:#dee7e0;line-height:2.7}.footer-top button{border:0;background:none;padding:0;cursor:pointer}.footer-top a:hover,.footer-top button:hover{text-decoration:underline;text-underline-offset:5px}.footer-bottom{padding:21px 0;border-top:1px solid #ffffff20;display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:9px;color:#a1b4a7}.footer-bottom>span:nth-child(2){display:flex;align-items:center;gap:12px}.footer-star{font-size:22px;color:#55ceac}dialog{width:min(520px,calc(100% - 32px));max-height:85vh;padding:40px;background:var(--hp-card);color:var(--hp-ink);border:1px solid var(--hp-line);border-radius:18px}dialog::backdrop{background:#07110ccc;backdrop-filter:blur(4px)}dialog h2{font-size:36px}dialog p:not(.eyebrow){margin-top:20px;font-size:14px}dialog .button{margin-top:25px}.dialog-close{position:absolute;right:12px;top:12px;border:0;background:none;font-size:25px;width:40px;height:40px}.noscript-note{padding:18px;text-align:center;font-size:12px;background:var(--hp-mint)}
/* Progressive enhancement: content is visible if scripts fail. */
.reveal.is-ready{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.2,1)}.reveal.is-ready.is-visible{opacity:1;transform:none}.reveal.is-ready.demo-window.is-visible{transform:rotate(1deg)}
@media(min-width:1440px){.hero{min-height:720px}.hero-art{height:560px}.hero h1{font-size:112px}}
@media(max-width:1150px){.wrap{width:calc(100% - 64px)}.nav-desktop{gap:17px}.nav-cta{display:none}.hero{gap:38px}.hero-art{height:490px}.hero-actions{gap:16px;flex-wrap:wrap}.hero h1{font-size:clamp(68px,8.4vw,95px)}.demo-layout{gap:50px}.meet-grid{gap:70px}.topic-tile{padding:18px 13px}.topic-tile small{font-size:8px}.tool-card{padding:23px}.tool-card h3{font-size:23px}.faq-grid{gap:55px}.footer-top{gap:25px}}
@media(max-width:900px){.wrap{width:calc(100% - 48px)}.section-space{padding-block:75px}.nav-shell{height:77px}.nav-desktop{display:none;position:absolute;left:0;right:0;top:77px;background:var(--hp-paper);border-bottom:1px solid var(--hp-line);padding:18px 24px;max-height:calc(100dvh - 77px);overflow:auto;box-shadow:0 15px 20px #0000000a}.nav-desktop.is-open{display:grid;grid-template-columns:1fr 1fr;gap:6px 24px}.nav-desktop a{font-size:14px;min-height:45px;padding:12px}.nav-desktop a:after{left:12px;width:30px;bottom:5px}.menu-toggle{display:block}.nav-cta{display:inline-flex}.hero{gap:25px;padding-block:45px;min-height:0}.hero h1{font-size:72px}.hero-description{font-size:13px}.hero-art{height:465px;border-top-left-radius:100px}.warmup{left:7%;right:7%;padding:18px;top:34%}.equation{font-size:36px}.art-caption{font-size:7px;left:25px}.sticker-pi{left:38px;top:80px;font-size:57px}.sticker-root{left:25px;font-size:20px;bottom:48px}.hero-footnote{flex-wrap:wrap;gap:4px 15px;font-size:9px}.hero-actions{gap:10px}.hero-actions .button{padding:14px 17px;gap:14px;font-size:12px}.hero-actions .text-link{font-size:12px}.proof-inner{flex-wrap:wrap;justify-content:center;gap:10px 24px}.proof-inner p{font-size:11px}.proof-star{font-size:22px}.proof-star:last-of-type{display:none}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.topic-tile{min-height:130px;padding:20px}.topic-symbol{font-size:28px;margin-bottom:15px}.topic-tile small{font-size:10px}.section-heading{gap:25px}.section-heading>p{max-width:260px}.demo-layout{gap:35px}.demo-window{transform:none}.demo-tabs{margin-inline:15px}.demo-question-meta{padding-inline:18px}.preview-panel{margin-inline:15px;height:290px}.demo-tabs button{font-size:9px}.demo-bottom{padding-inline:16px;font-size:9px}.steps li{gap:15px}.tool-grid{gap:14px}.tool-card{padding:20px}.tool-card h3{font-size:21px}.tool-card p{font-size:11px}.tool-tag{font-size:8px}.review-grid{gap:14px}.review-card{padding:21px}.review-result{font-size:43px}.review-person strong{font-size:10px}.meet-grid{gap:45px}.portrait-frame img{height:420px}.portrait-note{right:0;font-size:17px;padding:16px}.faq-grid{gap:40px}.tuition-panel{padding:38px;flex-wrap:wrap}.tuition-panel h2{font-size:46px}.footer-top{grid-template-columns:1.4fr 1fr 1fr;gap:35px}.footer-social{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:25px}.footer-social h2{margin:0}.footer-bottom>span:nth-child(2){display:none}}
@media(max-width:650px){.wrap{width:calc(100% - 36px)}.section-space{padding-block:58px}.nav-shell{height:72px;gap:10px}.brand{flex-basis:115px}.brand img{width:115px;height:54px}.nav-actions{gap:10px}.nav-cta{display:none}.nav-desktop{top:72px}.theme-menu summary{width:40px;height:40px}.theme-options{right:-54px}.hero{grid-template-columns:1fr;gap:32px;padding-block:39px 36px}.hero-copy{padding:0}.hero .eyebrow{font-size:8px;margin-bottom:21px}.hero h1{font-size:clamp(65px,15vw,92px);margin-bottom:26px}.hero-description{font-size:14px;max-width:450px;line-height:1.8}.hero-actions{gap:18px;margin-top:24px}.hero-actions .button{min-height:49px}.hero-footnote{margin-top:16px;font-size:10px}.hero-art{height:405px;border-radius:90px 13px 13px 13px}.math-world{width:100%;height:100%}.warmup{top:31%;left:12%;right:12%;padding:20px;max-width:340px;margin:auto}.warmup-question{margin-top:12px;font-size:11px}.equation{font-size:39px;margin-bottom:11px}.warmup-feedback{min-height:27px;font-size:10px;margin-top:10px}.sticker-pi{left:43px;top:76px;font-size:55px}.sticker-root{bottom:24px;font-size:18px;left:28px}.art-caption{top:23px;left:28px;font-size:7px}.art-bottom{bottom:20px;right:18px;font-size:6px;gap:8px}.proof-inner{display:grid;grid-template-columns:1fr 1fr;gap:14px 20px;padding-block:20px}.proof-inner p{font-size:10px;white-space:normal}.proof-inner .proof-star{display:none}.resume{margin-top:24px;padding:22px;flex-direction:column;align-items:flex-start}.resume h2{font-size:23px}.resume .button{width:100%}.section-heading{display:block;margin-bottom:27px}.section-heading>p{margin-top:20px;max-width:100%;font-size:12px}.section-heading>.text-link{margin-top:18px}.eyebrow{font-size:9px;margin-bottom:18px}h2{font-size:39px}.practice-picker{padding:17px;border-radius:13px}.picker-top{gap:11px;flex-wrap:wrap;margin-bottom:17px}.picker-top label{font-size:11px}.picker-top select{flex:1;font-size:11px;padding-right:20px}.picker-hint{display:none}.topic-grid{gap:10px}.topic-tile{min-height:134px;padding:17px 12px}.topic-symbol{font-size:30px;margin-bottom:17px}.topic-tile>span:nth-child(2){font-size:11px}.topic-tile small{font-size:8px;line-height:1.5;margin-top:4px}.topic-arrow{right:11px;top:12px}.picker-bottom{flex-direction:column;align-items:stretch;gap:16px;margin-top:20px}.picker-bottom p{font-size:11px}.picker-bottom .button{width:100%}.under-note{font-size:10px;max-width:300px;margin-inline:auto}.demo-layout{grid-template-columns:1fr;gap:30px}.demo-copy>p:not(.eyebrow){max-width:100%}.steps{margin:20px 0}.steps li{padding:14px 0}.steps p{max-width:100%}.demo-section h2{font-size:40px}.demo-window{box-shadow:5px 6px 0 #ffffff09}.preview-panel{height:280px}.demo-tabs button{font-size:10px}.demo-bottom{font-size:9px}.demo-question-meta strong{font-size:16px}.tool-grid{grid-template-columns:1fr;gap:16px}.tool-card{padding:24px;display:grid;grid-template-columns:1fr 90px;gap:0 15px}.tool-number{grid-column:1/-1}.tool-art{grid-column:2;grid-row:2/5;height:100%;min-height:100px;font-size:42px;align-self:center;justify-content:center}.tool-card h3{grid-column:1;font-size:24px;margin-top:22px;margin-bottom:12px}.tool-card p{grid-column:1;font-size:12px;margin-bottom:20px}.tool-tag{grid-column:1/-1;justify-self:start;font-size:9px}.tool-dark .tool-art{font-size:20px;gap:5px;flex-wrap:wrap;align-content:center}.circled-letter{width:37px;height:37px}.bars{padding:20px 0;gap:6px;align-items:flex-end;min-height:130px}.bars i{width:12px}.review-grid{grid-template-columns:1fr;gap:16px}.review-card{min-height:0;padding:25px}.review-result{font-size:52px}.review-context{font-size:11px}.review-detail{margin-block:17px}.review-stars{margin-bottom:17px}.review-person strong{font-size:12px}.review-person div>span{font-size:10px}.meet-grid{grid-template-columns:1fr;gap:39px}.portrait-frame{max-width:420px;padding-right:20px;width:100%}.portrait-frame img{height:390px;object-position:center 40%;border-top-left-radius:110px}.portrait-note{right:0;bottom:43px;font-size:19px}.meet-copy h2{font-size:44px}.meet-copy>p:not(.eyebrow){font-size:13px;margin-top:19px}.faq-grid{grid-template-columns:1fr;gap:30px}.faq-grid h2 br{display:none}.faq-grid h2 .serif-word{margin-left:8px}.faq-grid>div>p:last-child{margin-top:15px}.faq-list summary{font-size:13px;padding-block:20px}.faq-list details p{font-size:12px}.tuition-section{padding-bottom:45px}.tuition-panel{padding:29px 25px;gap:26px;border-radius:13px}.tuition-panel h2{font-size:42px}.tuition-panel p{font-size:12px}.tuition-panel .button{width:100%;font-size:12px;padding-inline:14px;gap:20px}.tuition-doodle{right:-90px;top:50px;font-size:240px}.site-footer{padding-top:40px}.footer-top{grid-template-columns:1fr 1fr;gap:35px 20px;padding-bottom:35px}.footer-top>div:first-child{grid-column:1/-1}.footer-top h2{margin-bottom:12px}.footer-social{display:grid;grid-template-columns:1fr 1fr;gap:3px 20px}.footer-social h2{grid-column:1/-1;margin-bottom:10px}.footer-bottom{font-size:9px}.footer-brand{font-size:28px}.reveal.is-ready.demo-window.is-visible{transform:none}dialog{padding:32px 25px}dialog h2{font-size:30px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.reveal.is-ready{opacity:1;transform:none}.math-world{transform:none}.warmup,.warmup:hover,.warmup:focus-within{transform:none}.button:hover,.topic-choice:hover .topic-tile,.tool-card:hover{transform:none}}
@media print{.site-header,.hero-art,.theme-menu,.site-footer,.tuition-section,.resume{display:none!important}.wrap{width:100%}.section-space{padding-block:25px}body{background:white;color:black}.reveal.is-ready{opacity:1;transform:none}.demo-section{background:white;color:black}.demo-section p{color:#333}}
/* Board picker and prominent live result badge — homepage revision 2. */
.board-dropdown{position:relative;min-width:235px;z-index:5}.board-trigger{display:flex;align-items:center;gap:12px;width:100%;min-height:54px;padding:13px 16px;border:1px solid var(--hp-line);border-radius:11px;background:var(--hp-soft);color:var(--hp-ink);font-size:13px;font-weight:600;text-align:left;transition:border-color .2s,background .2s}.board-trigger:hover,.board-trigger[aria-expanded=true]{border-color:var(--hp-brand);background:var(--hp-mint)}.board-trigger-icon{font-size:21px;color:var(--hp-ink);line-height:1}.board-trigger svg{width:18px;height:18px;stroke:currentColor;stroke-width:1.6;fill:none;margin-left:auto;transition:transform .2s}.board-trigger[aria-expanded=true] svg{transform:rotate(180deg)}.board-options{position:absolute;top:calc(100% + 9px);left:0;width:max(100%,280px);max-width:calc(100vw - 72px);padding:7px;background:var(--hp-card);border:1px solid var(--hp-line);border-radius:14px;box-shadow:0 14px 40px #081d1720}.board-options button{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:65px;width:100%;padding:12px 13px;border:0;border-radius:8px;background:transparent;color:var(--hp-ink);text-align:left;font-size:13px;font-weight:600}.board-options button small{display:block;font-size:10px;font-weight:400;color:var(--hp-muted);margin-top:3px}.board-options button:hover,.board-options button:focus-visible,.board-options button[aria-selected=true]{background:var(--hp-mint)}.board-options button:focus-visible{outline:2px solid var(--hp-brand);outline-offset:-2px}.board-check{visibility:hidden;color:var(--hp-ink);font-size:16px}.board-options button[aria-selected=true] .board-check{visibility:visible}.practice-count-area{display:flex;align-items:center;gap:22px}.question-count-badge{width:144px;min-height:132px;flex-shrink:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:19px 12px;border:1px solid var(--hp-brand);border-radius:22px;background:var(--hp-mint);box-shadow:4px 4px 0 #13b39119;text-align:center}.question-count-badge strong{font-family:var(--hp-heading);font-size:57px;line-height:1;letter-spacing:-.06em;font-weight:600;color:var(--hp-ink)}.question-count-badge>span{margin-top:10px;font-size:11px;font-weight:500;line-height:1.3;color:var(--hp-muted)}.picker-bottom{padding-top:24px;border-top:1px solid var(--hp-line)}.picker-bottom #practice-count-note{font-size:12px;max-width:180px}
@media(max-width:650px){.board-dropdown{min-width:0;flex:1}.board-trigger{font-size:12px;gap:8px;min-height:50px;padding:12px}.board-trigger-icon{display:none}.board-options{left:auto;right:0;width:260px;max-width:calc(100vw - 72px)}.picker-top label{flex:0 0 auto}.practice-count-area{justify-content:center;gap:18px}.question-count-badge{width:132px;min-height:124px;border-radius:19px}.question-count-badge strong{font-size:52px}.picker-bottom #practice-count-note{max-width:130px;font-size:11px}}