:root {
  --ink:#1d1d1f; --muted:#6e6e73; --blue:#0071e3; --link:#0066cc;
  --paper:#fff; --wash:#f5f5f7; --line:#d2d2d7; --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,'SF Pro Display','Helvetica Neue',Arial,sans-serif;font-size:20px;line-height:1.5;-webkit-font-smoothing:antialiased}
button,input,select{font:inherit;color:inherit}
button,a,input,select,summary{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}a{color:inherit;text-decoration:none}img{max-width:100%}h1,h2,h3,h4,p{margin:0}[hidden]{display:none!important}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #0071e3;outline-offset:5px}
.container{width:min(1200px,calc(100% - 96px));margin-inline:auto}
.header{position:sticky;top:0;z-index:20;background:#ffffffdc;backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid #0000000d}
.nav{height:78px;display:flex;align-items:center;justify-content:space-between;gap:35px}
.brand{display:flex;align-items:center;gap:7px;flex-shrink:0}.brand img{width:120px;height:44px;object-fit:contain}.brand>span{font-size:24px;letter-spacing:-1px;color:#14234d;font-weight:500}
.nav nav{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:400}.nav nav a:hover,.footer a:hover{color:var(--link)}
.nav-actions{display:flex;align-items:center;gap:24px}.login{font-size:14px}.menu-toggle{display:none}
.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;background:var(--blue);color:#fff;border:1px solid var(--blue);border-radius:99px;padding:13px 26px;min-height:50px;font-size:17px;font-weight:400;line-height:1.25;transition:background .2s,transform .2s}
.button:hover{background:#0077ed;border-color:#0077ed}.button:active{transform:scale(.98)}.button.small{font-size:14px;min-height:38px;padding:9px 18px}.button.wide{width:100%}.button.secondary{background:transparent;color:var(--link);border-color:var(--blue)}.button.secondary:hover{background:#edf6ff}
.text-link,.text-button{display:inline-flex;align-items:center;gap:10px;color:var(--link);font-size:20px;font-weight:400;border:0;padding:0;background:none;line-height:1.4}.text-link:hover,.text-button:hover{text-decoration:underline}.text-link>span,.text-button>span{font-size:26px;line-height:1}
.hero{overflow:hidden;padding:66px 0 70px}.hero-copy{text-align:center}.hero-kicker{font-size:23px;font-weight:600;letter-spacing:-.3px;margin-bottom:21px}
h1{font-size:clamp(66px,6.8vw,98px);font-weight:650;letter-spacing:-5px;line-height:1.025}
.gradient-text{display:inline-block;background:linear-gradient(105deg,#0b71d8 12%,#315cc9 52%,#7455c9 92%);background-clip:text;-webkit-background-clip:text;color:transparent}
.hero .lead{font-size:24px;line-height:1.4;font-weight:400;letter-spacing:-.4px;color:var(--muted);margin:25px auto 0;max-width:720px}
.hero-actions{display:flex;justify-content:center;align-items:center;gap:30px;margin-top:26px}.hero-actions .text-link{font-size:19px}.hero-note{font-size:14px;color:var(--muted);margin-top:15px}
.hero-visual{position:relative;padding-top:49px;max-width:1100px}.hero-visual:before{content:'';position:absolute;inset:60px -120px 70px;background:radial-gradient(ellipse at 45% 70%,#e1eafb 0%,#eef2fa 40%,#fff0 72%);z-index:-1}
.device-frame{padding:10px;border-radius:31px;background:linear-gradient(150deg,#d8dbe3,#9da4b2 40%,#d9dde6 60%,#979fac);box-shadow:0 25px 60px -20px #243b7040,0 0 0 1px #aeb5c1,inset 0 0 0 2px #eff0f4;transform:perspective(1800px) rotateX(3deg);transform-origin:bottom}
.product-window{background:#fff;border:2px solid #282c35;border-radius:23px;overflow:hidden;box-shadow:0 0 0 5px #313640}
.window-header{display:flex;align-items:center;justify-content:space-between;gap:15px;height:44px;padding:0 22px;background:#fafafd;border-bottom:1px solid #e9e9f0;font-size:13px;color:#74747c}
.window-dots{display:flex;gap:6px}.window-dots i{width:9px;height:9px;border-radius:50%;background:#dedee4}.window-dots i:first-child{background:#ebbbbb}.window-dots i:nth-child(2){background:#e9d79c}.window-dots i:nth-child(3){background:#b0d0b9}.demo-label{color:#6e6e73}
.window-body{display:grid;grid-template-columns:177px 1fr;min-height:370px}.mini-side{display:flex;flex-direction:column;padding:27px 14px;background:#f6f7fa;border-right:1px solid #e6e8ee;font-size:14px}.mini-brand{font-size:24px;font-weight:650;letter-spacing:-1px;padding:0 11px;margin-bottom:30px;color:#172c59}.mini-brand>span{font-size:14px;font-weight:500;letter-spacing:0;margin-left:7px;color:#637495}.side-item{display:flex;align-items:center;gap:11px;padding:11px 12px;color:#687082;border-radius:9px;margin-bottom:6px}.side-item>span{font-size:20px;width:22px;line-height:1}.side-item.active{background:#e5ecf8;color:#2860ad}.side-bottom{display:flex;align-items:center;gap:10px;font-size:13px;color:#737b89;margin-top:auto;padding:20px 8px 0}.avatar{display:grid;place-items:center;width:29px;height:29px;background:#e1e8f5;border-radius:50%;color:#5273ac;font-weight:600}
.workspace{padding:25px 33px 23px;min-width:0}.workspace-greeting{display:flex;align-items:center;justify-content:space-between;gap:20px}.workspace-greeting p{font-size:14px;color:#7b8293;margin-bottom:4px}.workspace h3{font-size:28px;line-height:1.2;letter-spacing:-1px;font-weight:600}.workspace-status{font-size:13px;color:#677083;border:1px solid #e2e5ec;padding:5px 11px;border-radius:20px;white-space:nowrap}
.preview-tabs{display:flex;gap:25px;border-bottom:1px solid #e9ebf0;margin:25px 0 19px}.preview-tabs button{background:none;border:0;border-bottom:2px solid transparent;padding:0 0 12px;font-size:15px;line-height:1.3;color:#7c8495}.preview-tabs button[aria-selected=true]{border-color:#2474d9;color:#2168c2;font-weight:600}
.workspace-content{display:grid;grid-template-columns:1.42fr 1fr;gap:24px}.preview-list{min-width:0}.preview-school{display:flex;align-items:center;gap:13px;padding:15px 0;border-bottom:1px solid #edf0f5}.preview-school:first-child{padding-top:8px}.school-symbol{display:grid;place-items:center;width:44px;height:50px;flex-shrink:0;border-radius:12px;font:25px Georgia,serif}.lilac{background:#eeeaf8;color:#75659d}.peach{background:#faece2;color:#a27656}.blue{background:#e5effc;color:#4675b1}.preview-school b{font-size:16px;letter-spacing:-.3px;line-height:1.3;display:block}.preview-school small{font-size:13px;color:#7f8798;display:block;margin-top:5px}.saved-star{color:#b28a45;margin-left:auto;font-size:17px}.workspace-footer{font-size:13px;color:#858c9b;margin-top:18px}
.next-step{border-radius:18px;background:linear-gradient(130deg,#f0f4fd,#e7edfa);padding:20px 23px;display:flex;flex-direction:column;align-items:start}.next-icon{display:grid;place-items:center;color:#4675b9;background:white;border-radius:10px;width:31px;height:31px;font-size:22px;margin-bottom:15px}.next-step small{font-size:13px;color:#677c9e;margin-bottom:6px}.next-step b{font-size:22px;letter-spacing:-.6px;line-height:1.2;color:#2c4e7f;font-weight:600}.next-step button{background:none;border:0;padding:16px 0 0;font-size:14px;color:#2c67b7}.next-step button>span{padding-left:8px}.visual-caption{font-size:14px;text-align:center;color:#86868b;margin-top:24px}
.practice-mini{display:flex;gap:27px;align-items:center;margin:20px 0}.fraction-icon{font-size:80px;font-weight:600;letter-spacing:-4px;background:linear-gradient(130deg,#d9e9ff,#f1e9ff);color:#4475c5;border-radius:20px;padding:10px 30px;line-height:1.3}.practice-mini small{font-size:14px;color:#737d91}.practice-mini h4{font-size:28px;letter-spacing:-.8px;line-height:1.2;margin-block:7px}.practice-mini p{font-size:14px;color:#737d91}.workspace>.text-button,#preview-practice>.text-button{font-size:16px}
.eyebrow{font-size:21px;line-height:1.3;font-weight:600;letter-spacing:-.3px}h2{font-size:60px;line-height:1.07;letter-spacing:-2.5px;font-weight:650}h3{font-size:32px;line-height:1.15;letter-spacing:-1px;font-weight:600}.muted-heading{color:var(--muted)}
.intro-section{background:var(--wash);padding:110px 0 80px}.intro>.eyebrow{color:var(--muted);margin-bottom:22px}.intro h2{font-size:64px;max-width:1000px}.intro-description{font-size:24px;color:var(--muted);margin-top:30px;letter-spacing:-.4px;line-height:1.4}
.journey-links{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:62px;border-top:1px solid #d9d9df;padding-top:32px}.journey-links a{display:flex;align-items:center;gap:13px;font-size:19px;font-weight:500}.journey-links a:hover{color:var(--link)}.journey-links a>span:first-child{font-size:15px;color:#92929a}.journey-links a>span:last-child{margin-left:auto;font-size:22px;color:#92929a}
.feature-section{display:grid;grid-template-columns:.95fr 1.2fr;gap:90px;align-items:center;padding-block:125px}.feature-copy{grid-column:1;grid-row:1}.school-demo{grid-column:2;grid-row:1}.feature-copy>.eyebrow{margin-bottom:25px;color:#1d1d1f}.feature-copy h2{font-size:56px;margin-bottom:28px}.feature-copy>p{font-size:20px;color:var(--muted);line-height:1.5;letter-spacing:-.25px}.benefits{padding:0;list-style:none;display:flex;flex-direction:column;gap:16px;font-size:17px;line-height:1.45;margin:28px 0}.benefits li{position:relative;padding-left:28px}.benefits li:before{content:'✓';position:absolute;left:0;font-size:18px;color:var(--blue)}.feature-copy .text-button{margin-top:6px;font-size:20px}.access-note{font-size:14px;line-height:1.5;color:var(--muted);margin-top:23px;display:flex;gap:7px}.access-note>span{display:none}
.school-demo{background:var(--wash);border-radius:var(--radius);padding:35px;min-width:0}.demo-top{display:flex;align-items:center;justify-content:space-between;gap:15px}.demo-top .eyebrow{font-size:15px;font-weight:500;color:var(--muted);letter-spacing:0}.pill{font-size:13px;color:#74747a;white-space:nowrap}.school-demo h3{font-size:31px;line-height:1.1;letter-spacing:-1.1px;margin:20px 0 28px}.search-field{display:flex;align-items:center;gap:13px;background:white;border-radius:12px;padding:12px 16px;border:1px solid #e3e3e9}.search-field>span{font-size:28px;color:#94949d;line-height:1}.search-field input{background:none;border:0;min-width:0;width:100%;font-size:16px;min-height:27px}.filter-row{display:flex;gap:8px;margin:18px 0}.filter-row button{background:white;border:1px solid #e4e4eb;border-radius:30px;padding:7px 13px;font-size:14px;min-height:35px}.filter-row button[aria-pressed=true]{background:#1d1d1f;color:white;border-color:#1d1d1f}.school-results{display:flex;flex-direction:column;gap:12px;min-height:273px}.school-result{display:flex;align-items:center;gap:14px;background:#fff;border-radius:15px;padding:18px 16px;min-height:87px}.school-result>div{min-width:0}.school-result .school-symbol{width:39px;height:45px;font-size:23px;border-radius:10px}.school-result b{display:block;font-size:16px;font-weight:600;line-height:1.3;letter-spacing:-.2px}.school-result small{display:block;font-size:13px;color:#81818b;line-height:1.5;margin-top:5px}.school-result button{margin-left:auto;flex-shrink:0;border:0;border-radius:50%;background:#f1f2f6;width:32px;height:32px;line-height:1;font-size:22px;color:#6f7990}.school-result button[aria-pressed=true]{color:#2865b5;background:#e6effc}.empty{font-size:17px;color:var(--muted);padding:60px 10px}.demo-bottom{display:flex;justify-content:space-between;align-items:start;gap:20px;margin-top:24px}.demo-bottom>span{font-size:13px;color:var(--muted);max-width:155px;line-height:1.6}.demo-bottom .text-button{font-size:15px;line-height:1.5;max-width:155px;text-align:right}
.practice-section{background:var(--wash)}.practice-section .feature-section{grid-template-columns:1fr 1.13fr;gap:90px}.practice-section h2{font-size:56px}.feature-copy .fine-print{font-size:14px;line-height:1.5;margin-top:22px;max-width:390px}.practice-card{background:white;overflow:hidden;border-radius:var(--radius);box-shadow:0 20px 50px #1d304009}.practice-head{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:26px 32px;border-bottom:1px solid #ededf1;font-size:14px;color:#86868b}.subject-chip{font-size:17px;font-weight:600;color:#2d68b7}.practice-main{padding:33px 32px 29px}.practice-main>.eyebrow{font-size:14px;color:var(--muted);font-weight:400;letter-spacing:0}.practice-main h3{margin:15px 0 22px;font-size:33px}.practice-main>p:not(.hint){font-size:20px;line-height:1.5;color:#56565c;letter-spacing:-.3px}#sample-form{margin-top:30px}#sample-form label{display:block;font-size:15px;margin-bottom:11px;color:#55555d}.answer-row{display:flex;align-items:center;gap:12px}.answer-row input{width:105px;min-width:0;border:1px solid #b6b6c0;border-radius:11px;padding:11px 14px;font-size:21px;height:49px}.answer-row>span{font-size:15px;color:var(--muted)}.answer-row .button{margin-left:auto;font-size:16px;min-height:46px;padding-inline:22px}.hint-button{background:#f5f5f7;border:0;border-radius:24px;padding:10px 16px;min-height:42px;font-size:15px;color:#686870;margin-top:22px}.hint{padding:18px;background:#f5f5f7;border-radius:15px;font-size:17px;color:#60606a;line-height:1.5;margin-top:16px}.feedback{padding:18px;background:#edf4fe;border-radius:15px;font-size:17px;line-height:1.5;margin-top:16px;color:#42638c}.feedback:empty{display:none}.feedback.correct{background:#edf6f0;color:#39764e}.practice-foot{font-size:13px;display:flex;justify-content:space-between;align-items:center;gap:22px;border-top:1px solid #ededf1;padding:20px 32px;color:#86868b}.practice-foot>span:last-child{white-space:nowrap}
.progress-section{padding-block:125px;display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center}.progress-section h2{font-size:56px;margin:25px 0 29px}.narrow{font-size:21px;color:var(--muted);line-height:1.5;letter-spacing:-.3px}.progress-demo{background:#f5f5f7;border-radius:var(--radius);padding:35px}.progress-demo .demo-top>b{font-size:21px;font-weight:600;letter-spacing:-.4px}.progress-demo .demo-top{align-items:start}.progress-demo .pill{font-size:12px;white-space:normal;max-width:70px;text-align:right}.progress-row{display:flex;gap:16px;align-items:center;padding:29px 0;border-bottom:1px solid #dedee6}.progress-row:last-child{padding-bottom:0;border:0}.progress-icon{display:grid;place-items:center;width:47px;height:50px;border-radius:13px;flex-shrink:0;font-size:25px}.progress-row b{display:block;font-size:18px;font-weight:500;letter-spacing:-.3px}.progress-row small{display:block;font-size:14px;color:#82828a;margin-top:4px}.round-arrow{color:#a0a0ab;margin-left:auto;font-size:23px}.mini-bars{display:flex;align-items:end;gap:4px;height:38px;margin-left:auto}.mini-bars i{height:12px;width:7px;border-radius:3px;background:#92b7ee}.mini-bars i:nth-child(2){height:19px}.mini-bars i:nth-child(3){height:25px}.mini-bars i:nth-child(4){height:31px}.mini-bars i:nth-child(5){height:38px;background:#458de6}
.coverage-section{background:#f5f5f7;padding:53px 60px;border-radius:var(--radius);display:grid;grid-template-columns:1fr 1fr;gap:95px;align-items:center;margin-bottom:120px}.coverage-section .eyebrow{font-size:17px;color:var(--muted);font-weight:500}.coverage-section h3{font-size:38px;line-height:1.1;letter-spacing:-1.4px;margin:17px 0 23px}.coverage-section p{font-size:18px;color:var(--muted);line-height:1.5}.coverage-picker{display:flex;flex-direction:column;gap:14px;font-size:17px;font-weight:500}.coverage-picker select{width:100%;font-size:17px;padding:17px 40px 17px 16px;background:white;border:1px solid #d2d2d7;border-radius:12px;font-weight:400;text-overflow:ellipsis}#coverage-result{font-size:16px;color:#52745f;font-weight:400;line-height:1.5}#coverage-result.unavailable{color:#8b682d}
.membership-section{padding:110px 0;background:var(--wash)}.section-title{text-align:center}.section-title .eyebrow{color:var(--muted);margin-bottom:23px}.section-title h2{font-size:64px}.section-title p{font-size:22px;color:var(--muted);letter-spacing:-.4px;margin-top:25px}.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:65px}.plan{padding:37px 30px 31px;background:white;border-radius:var(--radius);display:flex;flex-direction:column;position:relative}.plan .eyebrow{font-size:15px;color:var(--muted);font-weight:500;letter-spacing:0}.plan h3{font-size:31px;line-height:1.1;letter-spacing:-1px;margin:15px 0}.plan-top p{font-size:17px;color:var(--muted);line-height:1.4;min-height:48px}.price{font-size:37px;font-weight:600;letter-spacing:-1.3px;margin:29px 0 9px;line-height:1.3}.price.planned{font-size:25px;letter-spacing:-.7px;min-height:49px;display:flex;align-items:center}.price-note{font-size:14px;color:var(--muted);line-height:1.5;min-height:42px}.plan .benefits{font-size:16px;gap:18px;margin-top:27px;border-top:1px solid #e5e5eb;padding-top:29px;flex:1}.plan .benefits li{padding-left:23px}.plan .button{font-size:16px;min-height:49px;padding:13px 15px;margin-top:12px}.plan.featured{box-shadow:inset 0 0 0 2px #0071e3}.plan-badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--blue);color:white;border-radius:30px;white-space:nowrap;padding:5px 14px;font-size:13px}.membership-note{text-align:center;font-size:14px;color:var(--muted);margin-top:28px}
.faq-section{padding-block:115px;display:grid;grid-template-columns:.75fr 1.25fr;gap:85px}.faq-section h2{font-size:53px;margin-top:22px;letter-spacing:-2px}.faq-section>.eyebrow{font-size:18px}.faq-section>div>p{font-size:20px;color:var(--muted);margin-top:25px}.faqs details{border-bottom:1px solid #d2d2d7}.faqs summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 0;font-size:20px;line-height:1.4;letter-spacing:-.35px;font-weight:500}.faqs summary::-webkit-details-marker{display:none}.faqs summary>span{font-size:26px;color:#86868b;font-weight:300}.faqs details[open] summary>span{transform:rotate(45deg)}.faqs details p{font-size:17px;line-height:1.6;color:var(--muted);padding-bottom:25px}
.final-cta{background:#f5f5f7;padding:100px 0 110px;text-align:center}.final-cta .eyebrow{font-size:21px;color:var(--muted);margin-bottom:23px}.final-cta h2{font-size:80px;letter-spacing:-3.8px;line-height:1.04}.final-cta .button{margin-top:34px}.final-cta .container>p:last-child{font-size:17px;color:var(--muted);margin-top:23px}
.footer{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:42px;padding-top:45px}.footer p{font-size:14px;color:var(--muted);margin-top:15px}.footer-links{display:flex;gap:22px;font-size:13px;flex-wrap:wrap;justify-content:end;max-width:680px}.footer-bottom{display:flex;justify-content:space-between;gap:25px;border-top:1px solid #e2e2e7;width:100%;padding:24px 0;font-size:12px;color:#86868b}
.skip{position:absolute;left:20px;top:-70px;padding:10px;background:white;z-index:50}.skip:focus{top:10px}
dialog{border:0;border-radius:28px;background:#fff;color:var(--ink);padding:55px;width:min(760px,calc(100% - 40px));max-height:88vh;overflow:auto;box-shadow:0 30px 100px #0003}dialog::backdrop{background:#0006;backdrop-filter:blur(10px)}.dialog-close{position:absolute;right:20px;top:17px;width:37px;height:37px;border:0;border-radius:50%;background:#f1f1f4;color:#6e6e73;font-size:28px;line-height:1}.dialog-label{font-size:14px;color:#6e6e73;letter-spacing:.3px;font-weight:500}#dialog-content h2{font-size:43px;letter-spacing:-1.8px;line-height:1.08;margin:20px 0}.dialog-intro{font-size:20px;color:var(--muted)}.dialog-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin:27px 0}.dialog-grid>div{background:#f5f5f7;border-radius:16px;padding:22px;font-size:18px;line-height:1.4}.dialog-grid small{display:block;font-size:13px;color:#86868b;margin-bottom:8px}.dialog-source{color:var(--link);font-size:17px}.dialog-source:hover{text-decoration:underline}.dialog-note{background:#f5f5f7;padding:22px;border-radius:16px;font-size:16px;color:var(--muted);line-height:1.5;margin:25px 0}.dialog-actions{display:flex;gap:13px;flex-wrap:wrap}.dialog-actions .button{font-size:15px;padding-inline:20px}.tour-steps{display:flex;gap:12px;margin-top:25px}.tour-steps button{background:#f5f5f7;border:0;border-radius:24px;padding:12px 18px;font-size:16px;line-height:1.4}.tour-steps button[aria-pressed=true]{background:#1d1d1f;color:white}
/* Research remains readable alongside the updated prototype. */
.review-bar{display:flex;justify-content:space-between;align-items:center;gap:20px;background:#f5f5f7;padding:14px 30px;font-size:13px}.review-bar a{color:var(--link)}.review-article{max-width:1020px;margin:70px auto;padding:0 30px}.review-article h1{font-size:48px;letter-spacing:-1.5px;line-height:1.25;margin:22px 0}.review-article h2{font-size:32px;letter-spacing:-.7px;line-height:1.3;margin:55px 0 20px}.review-article h3{font-size:24px;letter-spacing:-.5px;margin:32px 0 16px}.review-article p,.review-article li{font-size:18px;line-height:1.8;margin-bottom:18px;color:#55555d}.review-article a{color:var(--link)}.review-article a:hover{text-decoration:underline}.review-article table{width:100%;border-collapse:collapse;margin-block:28px;font-size:15px;line-height:1.7}.review-article th,.review-article td{padding:18px;text-align:left;vertical-align:top;border:1px solid #dddde4}.review-article th{background:#f5f5f7}.review-article .callout{background:#f5f5f7;border-radius:20px;padding:30px;margin-block:28px}.research-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.research-gallery figure{margin:0}.research-gallery img{border-radius:12px;border:1px solid #e4e4e9}.research-gallery figcaption{font-size:14px;color:var(--muted);margin-top:10px}.code-map{background:#f5f5f7;border-radius:16px;padding:25px;font-size:15px;line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere}.review-article code{overflow-wrap:anywhere;font-size:.85em}
@media(min-width:1700px){.container{width:min(1320px,calc(100% - 140px))}.hero-visual{max-width:1140px}.hero{padding-top:80px}.hero-copy h1{font-size:108px}.hero .lead{font-size:27px}.hero-visual{padding-top:65px}.feature-copy h2,.practice-section h2,.progress-section h2{font-size:64px}.window-body{min-height:390px}}
@media(max-width:1190px){.container{width:calc(100% - 72px)}.nav{gap:25px}.nav nav{gap:20px;font-size:13px}.nav-actions{gap:18px}.feature-section,.practice-section .feature-section{gap:45px;grid-template-columns:1fr 1.18fr}.feature-copy h2,.practice-section h2,.progress-section h2{font-size:48px;letter-spacing:-1.9px}.feature-copy>p{font-size:19px}.feature-copy .benefits{font-size:16px}.school-demo{padding:28px}.school-demo h3{font-size:29px}.school-result{padding:16px 12px;gap:10px}.school-result b{font-size:15px}.school-result small{font-size:12px}.school-result .school-symbol{width:32px;height:40px;font-size:21px}.school-result button{width:29px;height:29px}.demo-top .eyebrow{font-size:14px}.demo-top .pill{font-size:12px}.workspace{padding-inline:26px}.window-body{grid-template-columns:155px 1fr}.mini-side{padding-inline:10px}.side-item{gap:7px;padding-inline:10px}.workspace-content{gap:20px;grid-template-columns:1.35fr 1fr}.next-step{padding:18px}.next-step b{font-size:20px}.preview-school b{font-size:14px}.preview-school small{font-size:12px}.preview-school .school-symbol{width:37px;height:44px;font-size:23px}.workspace-status{display:none}.workspace-footer{font-size:12px}.progress-section{gap:50px}.progress-demo{padding:26px}.progress-demo .demo-top>b{font-size:20px}.progress-row{gap:12px}.progress-row b{font-size:17px}.progress-row small{font-size:13px}.mini-bars{display:none}.coverage-section{gap:60px;padding:45px}.plans{gap:18px}.plan{padding:32px 24px}.plan h3{font-size:28px}.plan .benefits{font-size:15px}.plan-top p{font-size:16px}.price.planned{font-size:22px}.faq-section{gap:50px}.faq-section h2{font-size:48px}.footer-links{max-width:560px;gap:18px}}
@media(max-width:950px){.nav nav{display:none}.nav{position:relative}.menu-toggle{display:block;border:0;background:transparent;font-size:16px;margin-left:auto;padding:10px}.nav nav.open{display:flex;flex-direction:column;align-items:start;position:absolute;top:78px;left:-36px;right:-36px;padding:28px 36px;background:#fffffff7;border-bottom:1px solid #ddd;box-shadow:0 20px 35px #0001;font-size:20px;gap:22px}.nav-actions .login{display:none}.hero{padding-top:60px}.hero-kicker{font-size:21px}h1{font-size:76px;letter-spacing:-3.8px}.hero .lead{font-size:22px}.hero-visual{padding-top:45px}.window-body{grid-template-columns:140px 1fr}.mini-side{font-size:12px}.mini-brand{font-size:23px;padding-inline:6px}.side-item{gap:7px;padding-inline:8px}.side-item>span{width:16px;font-size:18px}.side-bottom{font-size:12px;gap:7px;padding-inline:3px}.workspace{padding:25px 22px}.workspace h3{font-size:27px}.workspace-content{grid-template-columns:1fr}.next-step{display:none}.preview-school b{font-size:16px}.preview-school small{font-size:14px}.workspace-footer{font-size:13px}.preview-tabs button{font-size:15px}.preview-school .school-symbol{width:41px;height:46px}.workspace-content .preview-school{padding-block:18px}.workspace-content .preview-school:first-child{padding-top:4px}.window-header{font-size:12px}.intro h2{font-size:56px}.intro-description{font-size:22px}.journey-links{gap:20px}.journey-links a{font-size:16px;gap:10px}.feature-section,.practice-section .feature-section{grid-template-columns:1fr;gap:48px;padding-block:90px;max-width:690px}.feature-copy,.school-demo{grid-column:auto;grid-row:auto}.feature-copy{grid-row:1}.feature-copy h2,.practice-section h2,.progress-section h2{font-size:56px}.feature-copy>p{font-size:21px;max-width:600px}.feature-copy .benefits{font-size:18px}.school-demo{padding:37px}.school-demo h3{font-size:34px}.demo-top .eyebrow{font-size:17px}.demo-top .pill{font-size:14px}.school-result{padding:21px 18px;gap:16px}.school-result b{font-size:18px}.school-result small{font-size:15px}.school-result .school-symbol{width:45px;height:48px;font-size:26px}.school-result button{width:36px;height:36px;font-size:25px}.filter-row button{font-size:16px;padding:9px 15px}.search-field input{font-size:18px}.demo-bottom>span{font-size:14px;max-width:none}.demo-bottom .text-button{font-size:16px;max-width:none}.practice-main{padding:35px 37px}.practice-head,.practice-foot{padding-inline:37px}.practice-main h3{font-size:36px}.practice-main>p:not(.hint){font-size:22px}.answer-row input{width:135px}.answer-row .button{font-size:17px}.hint-button{font-size:17px}.progress-section{grid-template-columns:1fr;max-width:690px;gap:45px;padding-block:90px}.progress-demo{padding:37px}.progress-demo .demo-top>b{font-size:23px}.progress-demo .pill{font-size:14px;white-space:nowrap;max-width:none}.progress-row b{font-size:20px}.progress-row small{font-size:16px}.mini-bars{display:flex}.coverage-section{padding:40px;gap:40px;margin-bottom:90px}.coverage-section h3{font-size:33px}.coverage-section p{font-size:17px}.coverage-picker{font-size:16px}.coverage-picker select{font-size:15px;padding-inline:13px 30px}.section-title h2{font-size:56px}.plans{gap:15px}.plan{padding:32px 20px 26px}.plan h3{font-size:26px}.plan .eyebrow{font-size:13px}.plan-top p{font-size:16px;min-height:68px}.price{font-size:34px}.price.planned{font-size:20px;min-height:44px}.price-note{font-size:13px;min-height:60px}.plan .benefits{font-size:15px;gap:16px}.plan .button{font-size:14px;padding-inline:8px}.faq-section{grid-template-columns:1fr;gap:35px;padding-block:85px}.faq-section h2{font-size:56px}.faq-section>div>p{font-size:21px;max-width:550px}.faqs summary{font-size:21px}.final-cta h2{font-size:72px}.footer-links{max-width:400px;font-size:13px}.footer-bottom{font-size:12px}}
@media(max-width:650px){html{scroll-padding-top:85px}body{font-size:18px}.container{width:calc(100% - 40px)}.nav{height:70px;gap:16px}.brand img{width:114px;height:42px}.brand>span{font-size:22px}.nav-actions{display:none}.menu-toggle{font-size:15px}.nav nav.open{top:70px;left:-20px;right:-20px;padding:28px 25px}.hero{padding:43px 0 43px}.hero-kicker{font-size:17px;line-height:1.4;letter-spacing:-.3px;margin-bottom:21px}h1{font-size:52px;letter-spacing:-2.8px;line-height:1.045;font-weight:650}.hero-copy{width:calc(100% - 32px)}.hero .lead{font-size:20px;letter-spacing:-.4px;line-height:1.4;margin-top:23px;max-width:350px}.hero .lead br{display:none}.hero-actions{gap:21px;margin-top:26px}.hero-actions .button{font-size:16px;padding:13px 23px;min-height:48px}.hero-actions .text-link{font-size:16px;gap:5px}.hero-note{font-size:13px;margin-top:16px}.hero-visual{padding-top:36px;width:calc(100% - 26px);max-width:460px}.device-frame{padding:6px;border-radius:25px;box-shadow:0 20px 40px -20px #243b7040,0 0 0 1px #aeb5c1,inset 0 0 0 1px #eff0f4;transform:none}.product-window{border-radius:20px;border-width:1px;box-shadow:0 0 0 3px #313640}.window-header{height:34px;padding:0 12px;font-size:11px;gap:8px}.window-header>.demo-label{font-size:11px}.window-dots{gap:3px}.window-dots i{width:5px;height:5px}.window-body{display:block;min-height:0}.mini-side{display:none}.workspace{padding:22px 19px 20px}.workspace-greeting p{font-size:13px}.workspace h3{font-size:25px;letter-spacing:-.8px}.preview-tabs{gap:25px;margin:22px 0 16px}.preview-tabs button{font-size:14px;padding-bottom:11px}.preview-school{gap:10px}.preview-school b{font-size:14px;letter-spacing:-.2px;line-height:1.35}.preview-school small{font-size:12px;margin-top:4px}.preview-school .school-symbol{width:35px;height:41px;font-size:22px}.saved-star{font-size:14px}.workspace-content .preview-school{padding-block:16px}.workspace-footer{font-size:12px;margin-top:17px}.visual-caption{font-size:12px;max-width:285px;line-height:1.5;margin:20px auto 0}.practice-mini{gap:17px;margin-top:15px}.fraction-icon{font-size:56px;padding:8px 17px;border-radius:15px;letter-spacing:-3px}.practice-mini small{font-size:12px}.practice-mini h4{font-size:21px;letter-spacing:-.6px}.practice-mini p{font-size:13px}.workspace>.text-button,#preview-practice>.text-button{font-size:14px}.eyebrow{font-size:19px;letter-spacing:-.3px}h2{font-size:42px;letter-spacing:-1.8px;line-height:1.08}h3{font-size:28px}.intro-section{padding:70px 0 55px}.intro>.eyebrow{font-size:18px;margin-bottom:20px}.intro h2{font-size:43px;letter-spacing:-1.9px;line-height:1.09}.intro-description{font-size:20px;line-height:1.45;margin-top:25px}.intro-description br{display:none}.journey-links{grid-template-columns:1fr;gap:0;margin-top:35px;padding-top:9px}.journey-links a{padding:17px 0;font-size:18px;gap:15px;border-bottom:1px solid #dddde3}.journey-links a:last-child{border-bottom:0}.journey-links a>span:first-child{font-size:14px}.feature-section,.practice-section .feature-section{padding-block:70px;gap:35px}.feature-copy h2,.practice-section h2,.progress-section h2{font-size:44px;letter-spacing:-1.9px;margin-bottom:25px}.feature-copy>.eyebrow{font-size:19px;margin-bottom:20px}.feature-copy>p{font-size:20px;letter-spacing:-.4px;line-height:1.5}.feature-copy .benefits{font-size:17px;gap:17px}.feature-copy .text-button{font-size:19px}.access-note{font-size:14px;margin-top:20px}.school-demo{padding:23px 19px;border-radius:24px}.demo-top{gap:10px}.demo-top .eyebrow{font-size:14px}.demo-top .pill{font-size:12px}.school-demo h3{font-size:28px;letter-spacing:-1px;margin:21px 0 24px}.search-field{padding:10px 12px;gap:9px}.search-field input{font-size:16px;min-height:28px}.filter-row{gap:7px;margin:16px 0}.filter-row button{font-size:13px;padding:9px 12px;min-height:37px}.school-results{gap:10px;min-height:273px}.school-result{padding:17px 12px;gap:10px;border-radius:13px;min-height:87px}.school-result .school-symbol{width:31px;height:37px;font-size:21px;border-radius:9px}.school-result b{font-size:15px;line-height:1.3}.school-result small{font-size:12px;line-height:1.5;margin-top:5px}.school-result button{width:28px;height:28px;font-size:20px}.demo-bottom{gap:15px;margin-top:22px}.demo-bottom>span{font-size:12px;max-width:130px;line-height:1.5}.demo-bottom .text-button{font-size:14px;max-width:135px;line-height:1.5}.empty{font-size:16px;padding-block:60px}.feature-copy .fine-print{font-size:14px;line-height:1.5;max-width:none}.practice-card{border-radius:24px}.practice-head{padding:22px;gap:15px;font-size:13px}.subject-chip{font-size:17px}.practice-main{padding:26px 23px}.practice-main>.eyebrow{font-size:14px}.practice-main h3{font-size:30px;margin:16px 0 20px;letter-spacing:-1px}.practice-main>p:not(.hint){font-size:19px;line-height:1.5}#sample-form label{font-size:15px}.answer-row{gap:9px}.answer-row input{width:86px;font-size:20px;padding-inline:11px}.answer-row>span{font-size:14px}.answer-row .button{font-size:15px;padding-inline:18px}.hint-button{font-size:15px;margin-top:21px}.hint,.feedback{font-size:16px;line-height:1.5;padding:16px}.practice-foot{padding:18px 22px;font-size:12px;line-height:1.5}.progress-section{padding-block:70px;gap:34px}.progress-section h2{margin:20px 0 25px}.narrow{font-size:20px}.progress-demo{padding:26px 23px;border-radius:24px}.progress-demo .demo-top>b{font-size:20px;line-height:1.3;max-width:190px}.progress-demo .pill{white-space:normal;font-size:12px;max-width:65px;line-height:1.5}.progress-row{gap:12px;padding-block:25px}.progress-icon{width:39px;height:44px;border-radius:11px;font-size:23px}.progress-row b{font-size:17px;letter-spacing:-.3px}.progress-row small{font-size:13px;line-height:1.5;margin-top:6px}.mini-bars{display:none}.round-arrow{font-size:20px}.coverage-section{grid-template-columns:1fr;gap:28px;padding:30px 24px;margin-bottom:70px;border-radius:24px}.coverage-section .eyebrow{font-size:16px}.coverage-section h3{font-size:35px;letter-spacing:-1.3px;margin:16px 0 20px}.coverage-section p{font-size:17px;line-height:1.5}.coverage-picker{font-size:16px;gap:12px}.coverage-picker select{font-size:15px;padding-block:16px}#coverage-result{font-size:15px;line-height:1.5}.membership-section{padding:70px 0}.section-title .eyebrow{font-size:19px;margin-bottom:21px}.section-title h2{font-size:44px;letter-spacing:-2px}.section-title p{font-size:20px;line-height:1.45;letter-spacing:-.3px;margin-top:25px}.plans{grid-template-columns:1fr;gap:26px;margin-top:40px}.plan{padding:32px 29px;border-radius:24px}.plan .eyebrow{font-size:15px}.plan h3{font-size:34px;letter-spacing:-1.1px}.plan-top p{font-size:18px;min-height:0}.price{font-size:36px;margin-top:27px}.price.planned{font-size:26px;min-height:46px}.price-note{font-size:15px;min-height:0}.plan .benefits{font-size:17px;gap:18px;padding-top:27px;margin-top:25px}.plan .button{font-size:17px;min-height:50px}.plan-badge{font-size:13px}.membership-note{font-size:14px;line-height:1.5;margin-top:25px}.faq-section{padding-block:70px;gap:27px}.faq-section .eyebrow{font-size:19px}.faq-section h2{font-size:44px;letter-spacing:-1.9px;margin-top:20px}.faq-section>div>p{font-size:19px;line-height:1.5;margin-top:21px}.faqs summary{font-size:18px;line-height:1.45;letter-spacing:-.25px;padding-block:23px}.faqs summary>span{font-size:24px}.faqs details p{font-size:17px;line-height:1.55;padding-bottom:22px}.final-cta{padding:73px 0 77px}.final-cta .eyebrow{font-size:17px;line-height:1.4;margin-bottom:23px}.final-cta h2{font-size:49px;letter-spacing:-2.3px}.final-cta .button{margin-top:28px}.final-cta .container>p:last-child{font-size:15px;margin-top:22px}.footer{padding-top:35px;gap:28px;align-items:start}.footer p{font-size:14px}.footer-links{justify-content:start;gap:16px 20px;font-size:14px;line-height:1.5;max-width:none}.footer-bottom{font-size:12px;line-height:1.5;flex-direction:column;gap:12px;padding-block:22px}.dialog-close{right:15px;top:13px;width:34px;height:34px}dialog{padding:52px 25px 30px;width:calc(100% - 24px);border-radius:24px}.dialog-label{font-size:12px}#dialog-content h2{font-size:34px;letter-spacing:-1.3px}.dialog-intro{font-size:18px}.dialog-grid{grid-template-columns:1fr;gap:10px;margin-block:24px}.dialog-grid>div{font-size:17px;padding:19px}.dialog-grid small{font-size:12px}.dialog-source{font-size:16px}.dialog-note{padding:19px;font-size:15px;line-height:1.5;margin-block:23px}.dialog-actions{flex-direction:column;gap:12px}.dialog-actions .button{font-size:16px}.tour-steps{gap:9px}.tour-steps button{font-size:14px;padding:11px 15px}.review-bar{padding:14px 20px;font-size:12px}.review-bar>span:last-child{display:none}.review-article{padding:0 20px;margin-block:45px}.review-article h1{font-size:34px;letter-spacing:-1px}.review-article h2{font-size:27px;letter-spacing:-.5px}.review-article p,.review-article li{font-size:17px}.review-article .callout{padding:23px}.table-wrap{overflow:auto}.review-article table{min-width:850px}.research-gallery{grid-template-columns:1fr}.code-map{font-size:13px;padding:20px}}
@media(max-width:370px){h1{font-size:46px;letter-spacing:-2.5px}.hero-kicker{font-size:16px}.hero .lead{font-size:19px}.hero-actions{gap:15px}.hero-actions .button{padding-inline:20px;font-size:15px}.hero-actions .text-link{font-size:15px}.hero .workspace{padding-inline:15px}.preview-school b{font-size:13px}.preview-school small{font-size:12px}.preview-school{gap:8px}.saved-star{display:none}.intro h2,.feature-copy h2,.practice-section h2,.progress-section h2,.section-title h2{font-size:40px}.school-demo{padding-inline:16px}.filter-row button{padding-inline:10px;font-size:12px}.demo-top .eyebrow{font-size:13px}.demo-top .pill{font-size:11px}.school-result{padding-inline:10px;gap:9px}.school-result b{font-size:14px}.school-result .school-symbol{width:27px;height:34px}.answer-row input{width:70px}.answer-row .button{padding-inline:14px}.answer-row>span{font-size:13px}.practice-main{padding-inline:21px}.final-cta h2{font-size:45px}.progress-row b{font-size:16px}.progress-row small{font-size:12px}.coverage-picker select{font-size:14px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.device-frame{transform:none}}