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@media(max-width:1100px){.wrap{width:calc(100% - 48px)}h1{font-size:59px}h2{font-size:49px}.hero{gap:25px;grid-template-columns:1.2fr 1fr}.phone{width:250px;height:490px}.phone-stage{height:570px}.hero-thought{font-size:29px}.hero-paper{font-size:24px;padding:20px}.recognition{gap:30px}.recognition-title h2{font-size:48px}.recognition-scene>img{width:260px}.recognition-lines{max-width:280px}.tour-stage{grid-template-columns:245px minmax(0,1fr);gap:30px}.tour-steps button strong{font-size:16px}.tour-panel h3{font-size:27px}.case-workspace{gap:40px;grid-template-columns:1.15fr 1fr}.exam-sheet{padding:28px}.equation{font-size:43px}.student-work .handnote{font-size:31px}.student-work .correction{font-size:27px}.route-line{gap:15px;padding:25px;grid-template-columns:1fr 20px 1fr 20px 1fr}.route-line h3{font-size:21px}.case-bottom{gap:30px}.case-bottom .handnote{min-width:210px;font-size:26px}.memory-layout{gap:35px}.memory-paper{padding:25px}.memory-scene>img{width:310px}.mentor-app{gap:30px;grid-template-columns:1fr 1fr}.physics-task{padding-right:0}.mentor-panel{padding-left:28px}.physics-task h3{font-size:26px}.mentor-bottom{gap:25px}.independence-heading img{margin-right:10px;width:220px}.comparison-rows>div{grid-template-columns:180px 1fr 1fr;gap:25px}.comparison-rows>div>span{font-size:21px}.subject-detail{gap:35px}.subject-art{min-height:410px}.price{gap:50px}.price-sheet{padding:30px}.price-sheet li{display:block}.price-sheet li span{display:block;text-align:left;margin-top:5px}.price-intro>img{max-width:80%;margin-left:15px}.finish-person{height:470px}.site-footer .links{gap:12px 15px}}
@media(max-width:700px){.wrap{width:calc(100% - 36px)}section{padding:65px 0}h1{font-size:clamp(43px,10.8vw,65px)}h2{font-size:42px}h3{font-size:25px}.lead{font-size:20px}.section-head{display:block;margin-bottom:30px}.section-head>p{margin-top:20px;font-size:16px}.button{font-size:14px;padding:15px 22px;min-height:54px}.handnote{font-size:28px}header{height:77px;gap:12px}.brand{font-size:26px}.brand img{width:28px}header>nav{display:none}.login{padding:9px 15px;font-size:13px;min-height:44px}.mobile-nav{display:block;margin-left:auto;position:relative}.mobile-nav summary{list-style:none;font-size:12px;min-height:44px;cursor:pointer;padding:12px 5px}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav nav{position:absolute;right:-80px;top:48px;min-width:230px;display:flex;flex-direction:column;gap:4px;background:#242526;border-radius:12px;padding:20px;box-shadow:0 10px 30px #0005}.mobile-nav nav a{padding:10px 0;font-size:14px}.hero{grid-template-columns:1fr;gap:15px;padding:30px 0 60px}.hero-copy>.lead{font-size:20px;margin-top:25px}.hero-copy>p:not(.lead){font-size:15px}.actions{gap:15px;margin-top:25px}.hero .actions{align-items:start;flex-direction:column;gap:10px}.hero .button{width:100%}.hero .textlink{font-size:13px}.phone-stage{height:490px;margin-top:20px}.phone{width:230px;height:450px;border-radius:38px}.phone-copy h2{font-size:30px}.phone-copy p{font-size:11px}.phone-copy>span{font-size:10px}.hero-thought{font-size:27px;left:0;top:0}.hero-paper{font-size:23px;right:0;bottom:-5px;padding:18px 23px}.recognition{grid-template-columns:1fr;gap:25px;padding-bottom:45px}.recognition-title h2{font-size:42px}.recognition-title .lead{font-size:19px}.recognition-scene{height:440px}.recognition-scene>img{width:260px;height:390px}.recognition-lines{max-width:260px}.recognition-lines p{padding:12px 14px}.recognition-lines strong{font-size:16px}.recognition-lines span{font-size:12px}.recognition-scene .thought-cloud{top:0;right:5px;font-size:25px;padding:18px 25px}.tour-steps{gap:8px;margin-bottom:25px}.tour-steps button{padding:10px 0 15px;grid-template-columns:1fr;gap:7px}.tour-steps button>span{grid-row:auto;font-size:25px}.tour-steps button strong{font-size:13px;line-height:1.3}.tour-steps button small{font-size:10px;margin:0}.tour-stage{display:flex;flex-direction:column;gap:25px}.tour-panel{width:100%}.tour-panel h3{font-size:28px}.tour-panel>p{font-size:15px;margin-top:15px}.tour-result{margin-top:20px;padding-top:15px}.tour-result strong{font-size:16px}.tour-panel .text-button{margin-top:15px}.window-bar{padding:3px 12px;font-size:10px}.window-bar button{font-size:11px}.app-window{width:100%;border-radius:9px}.tour-handoff{display:block;margin-top:30px}.tour-handoff .handnote{font-size:27px}.tour-handoff p{margin-top:20px;font-size:16px}.case-heading{display:block;margin-bottom:35px}.case-heading>p{margin-top:25px;font-size:16px}.case-workspace{display:flex;flex-direction:column;gap:35px}.exam-sheet{width:100%;padding:24px;transform:rotate(-1.5deg)}.sheet-title{font-size:9px;gap:10px}.exam-sheet h3{font-size:21px;margin:25px 0}.equation{font-size:40px;margin-left:15px}.equals-zero{font-size:36px}.student-work{margin-top:25px;min-height:130px}.student-work .handnote{font-size:29px;white-space:normal}.student-work .correction{font-size:26px}.sheet-footer{gap:12px}.sheet-footer span{font-size:10px;max-width:140px}.sheet-footer strong{font-size:24px}.case-controls{width:100%}.case-controls h3{font-size:23px;margin-bottom:18px}.case-choices button{padding:15px 18px}.case-choices span{font-size:16px}.case-choices small{font-size:11px}.case-explainer{font-size:11px;margin-top:15px}.route-line{grid-template-columns:1fr;gap:15px;padding:25px;margin-top:30px}.route-line h3{font-size:25px;margin-top:8px}.route-line p{font-size:14px;margin-top:10px}.route-arrow{transform:rotate(90deg);justify-self:start;margin:0 0 0 8px;font-size:23px;line-height:1}.route-line .practice-equation{font-size:28px}.case-bottom{display:block;margin-top:30px}.case-bottom>p{font-size:14px}.case-bottom .handnote{font-size:28px;margin-top:25px}.memory-layout{grid-template-columns:1fr;gap:20px}.memory-copy p{font-size:15px}.memory-copy .lead{font-size:21px}.memory-scene{padding-top:150px}.memory-scene>img{top:-45px;right:0;width:250px;height:240px}.memory-paper{padding:25px 20px;transform:rotate(-2deg)}.memory-paper h3{font-size:32px}.memory-switch button{font-size:11px;padding:11px 7px}.recall-path{gap:12px;font-size:11px}.memory-paper p{font-size:14px;min-height:65px}.mentor-app{grid-template-columns:1fr;gap:30px;padding:25px 0}.physics-task{padding:0}.app-path{margin-bottom:22px;font-size:11px}.physics-task h3{font-size:27px}.formula{font-size:37px}.formula .fraction{font-size:31px}.energy-comparison{gap:30px;margin-top:28px}.mentor-panel{border-left:0;border-top:1px solid #333d40;padding:25px 0 0}.mentor-header strong{font-size:18px}.message{font-size:14px;margin-right:15px}.formula-message{font-size:26px}.mentor-bottom{grid-template-columns:1fr;gap:22px}.mentor-bottom p{font-size:14px}.mentor-bottom strong{font-size:17px}.independence-heading{display:block;position:relative;min-height:400px;padding-bottom:100px}.independence-heading h2{font-size:41px;position:relative;z-index:2}.independence-heading img{position:absolute;width:145px;height:220px;right:5px;bottom:-15px;margin:0;transform:rotate(12deg) scale(1.4)}.comparison-rows{margin-top:10px}.comparison-rows>div{grid-template-columns:1fr;gap:13px;padding:25px 0}.comparison-rows>div>span{font-size:24px}.comparison-rows p{font-size:14px}.comparison-rows strong{font-size:16px}.independence-end{text-align:left;font-size:17px;margin-top:25px}.exam-picker{margin-bottom:18px}.exam-picker button{font-size:13px;padding:10px 22px}.subject-tabs{gap:5px;margin-bottom:25px}.subject-tabs button{font-size:12px;padding:10px}.subject-detail{grid-template-columns:1fr;gap:25px}.subject-art{min-height:290px}.subject-art>div{bottom:23px;left:23px}.subject-art h3{font-size:32px}.subject-content{padding:0}.subject-content>h3{font-size:25px}.subject-content li{font-size:15px;padding:12px 0}.subject-example p{font-size:18px}.subject-content .button{width:100%}.price{grid-template-columns:1fr;gap:30px}.price-intro .lead{font-size:25px}.price-intro>p{font-size:16px}.price-intro>img{width:230px;height:170px;margin:20px auto 0;transform:rotate(-9deg) scale(1.15)}.price-sheet{padding:28px 23px;transform:rotate(1deg)}.price-sheet h3{font-size:38px}.price-sheet>p{font-size:14px}.price-sheet ul{margin:25px 0}.price-sheet li{display:flex;font-size:13px;gap:12px}.price-sheet li strong{min-width:0}.price-sheet li span{font-size:11px;text-align:right;margin:0;max-width:130px}.price-after{font-size:10px}.faq{padding-top:10px}.faq summary{font-size:17px;gap:15px}.faq details p{font-size:14px}.finish>.wrap{grid-template-columns:1fr;gap:15px}.finish p{font-size:16px}.finish .button{width:100%;margin:25px 0 10px}.finish-person{height:390px;max-width:380px;width:100%;margin:auto}.finish-person .thought-cloud{font-size:29px;right:10px;top:15px}.site-footer>.wrap{grid-template-columns:1fr;gap:25px}.site-footer .links{justify-content:flex-start;gap:14px 18px;font-size:12px}.payment-marks{justify-content:flex-start;gap:18px}.footer-legal{font-size:11px}.site-footer{padding:40px 0}#large-screen{max-width:none;width:850px}.dialog-bar{font-size:12px}.cookie-content{padding:25px}.cookie-content h2{font-size:27px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* Keep oversized paper and cutouts inside the page on narrow screens. */
main{overflow:clip}.independence-heading{overflow:clip}.memory-scene>img{right:20px}@media(min-width:701px) and (max-width:1100px){.phone-copy h2{font-size:29px}.independence-heading img{flex-shrink:0;margin-right:60px;width:180px}.route-arrow{font-size:23px}.memory-scene>img{right:35px}}@media(max-width:700px){.independence-heading img{right:42px}.memory-scene>img{right:20px}}
/* The worked page and the practice slip are one connected scene. */
.case-study{padding:110px 0 90px}.case-heading h2{font-size:clamp(44px,4.9vw,68px)}.case-heading>p{font-size:18px;max-width:290px}.case-choices{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-bottom:48px;border-bottom:1px solid #4c5744}.case-choices button{border:0;border-bottom:3px solid transparent;border-radius:0;padding:18px 20px 23px;background:none!important;color:#c6c7c3!important;position:relative}.case-choices button[aria-pressed=true]{color:#f0f1d9!important;border-bottom-color:#f5e6a8}.case-choices button[aria-pressed=true]:after{content:'';position:absolute;bottom:-10px;left:50%;width:14px;height:14px;transform:rotate(45deg);background:#f5e6a8}.case-choices span{font-size:20px}.case-choices small{font-size:12px;color:#a1ad99}.case-choices button:hover{color:#fff!important}.case-workspace{grid-template-columns:1.35fr 1fr;gap:70px;align-items:center;padding:12px 8px}.exam-sheet{padding:30px 40px 28px;transform:rotate(-2deg);min-height:540px}.exam-sheet h3{font-size:22px;margin:25px 0 22px}.student-work{min-height:170px;padding-top:25px;margin-top:25px;display:flex;flex-direction:column;align-items:flex-start;gap:13px;font:700 34px/1.2 Caveat,cursive}.student-work>span{display:block;animation:ink-arrive .4s cubic-bezier(.16,1,.3,1) both}.student-work>span:nth-child(2){animation-delay:.06s}.student-work>span:nth-child(3){animation-delay:.13s}.work-roots del{text-decoration:none;position:relative;color:#a83d30;padding:0 10px}.work-roots del:after{content:'';position:absolute;left:0;right:0;top:50%;height:3px;background:#a83d30;transform:rotate(-28deg)}.student-work .ink-reveal{font-size:28px;color:#a83d30;transform:rotate(-3deg);max-width:380px}.student-work .success-ink{color:#385f3c}.work-question b{color:#a83d30;font-size:52px}.sheet-footer{padding-top:18px;min-height:65px}.sheet-footer strong{max-width:210px;font-size:27px;text-align:right}.sheet-footer span{font-size:12px;max-width:210px}.next-practice{position:relative;padding-top:60px}.practice-bridge{position:absolute;top:-8px;left:-55px;display:flex;gap:15px;align-items:center;color:#f5e6a8}.practice-bridge svg{width:110px;height:55px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}.practice-bridge .handnote{font-size:28px}.practice-ticket{padding:28px 30px 30px;background:#f5e6a8;color:#24301c;box-shadow:8px 18px 35px #0003;transform:rotate(1.5deg);position:relative}.ticket-label{font-size:12px;border-bottom:1px solid #9ca878;padding-bottom:13px;display:block}.practice-ticket h3{font-size:30px;line-height:1.1;margin-top:22px}.practice-ticket>p{font-size:14px;line-height:1.55;margin-top:15px}.micro-task{padding:22px 0 8px;margin-top:22px;border-top:1px dashed #a2ad82}.micro-task>span{font-size:12px;display:block}.micro-task strong{display:block;font:700 35px/1.2 Caveat,cursive;margin-top:12px;color:#233957}.practice-ticket .text-button{font-size:12px;margin-top:10px;min-height:44px}.practice-answer{font-size:14px;line-height:1.6;border-top:1px solid #abb888;padding-top:16px;margin-top:12px}.practice-answer[hidden]{display:none}.practice-return{font-size:14px;max-width:380px;color:#bdc8b3;margin:25px 15px 0}.case-bottom{margin-top:55px;border-top:1px solid #3b4735;padding-top:25px}.case-bottom .handnote{font-size:27px;min-width:290px}.subjects{padding-top:90px}.hero-thought{max-width:230px;left:-15px;top:-5px}.phone-stage{isolation:isolate}.hero-paper{z-index:4}.phone-copy>span{display:none}.phone-copy h2{margin-top:0}.proof-break{background:#faf9f6}
@keyframes ink-arrive{from{opacity:.35;clip-path:inset(0 100% 0 0)}to{opacity:1;clip-path:inset(0 0 0 0)}}
@media(max-width:1100px) and (min-width:701px){.case-workspace{gap:35px;grid-template-columns:1.2fr 1fr}.exam-sheet{padding:28px;min-height:540px}.case-choices span{font-size:17px}.practice-ticket{padding:23px}.practice-ticket h3{font-size:27px}.student-work{font-size:30px}.student-work .ink-reveal{font-size:25px}.practice-bridge{left:-25px}.practice-bridge svg{width:70px}.sheet-footer{display:block}.sheet-footer strong{display:block;text-align:left;margin-top:12px}.hero-thought{left:0}}
@media(max-width:700px){.case-study{padding:65px 0}.case-heading h2{font-size:42px}.case-heading>p{font-size:16px}.case-choices{grid-template-columns:1fr;gap:0;margin-bottom:30px;border-bottom:0}.case-choices button{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:17px 0;border-bottom:1px solid #3b4735}.case-choices button[aria-pressed=true]{border-bottom-color:#f5e6a8}.case-choices button[aria-pressed=true]:after{display:none}.case-choices span{font-size:16px;max-width:200px}.case-choices small{text-align:right;font-size:10px;max-width:90px;margin:0}.case-workspace{display:flex;padding:5px 2px;gap:25px}.exam-sheet{min-height:0;padding:25px 22px;transform:rotate(-1deg)}.student-work{min-height:160px;font-size:31px;gap:15px}.student-work .ink-reveal{font-size:27px}.sheet-footer{display:block}.sheet-footer strong{display:block;text-align:left;max-width:none;margin-top:12px;font-size:26px}.sheet-footer span{max-width:none;font-size:12px}.next-practice{padding-top:70px;width:100%}.practice-bridge{top:-2px;left:10px;gap:10px}.practice-bridge svg{transform:rotate(48deg);width:65px}.practice-bridge .handnote{font-size:26px}.practice-ticket{padding:25px;transform:rotate(1deg)}.practice-ticket h3{font-size:30px}.micro-task strong{font-size:33px}.practice-return{margin:23px 8px 0;font-size:14px}.case-bottom{margin-top:30px}.case-bottom .handnote{min-width:0;font-size:28px}.hero-thought{left:0;top:0;font-size:24px;max-width:130px}.subjects{padding-top:65px}}
.phone-watch{display:flex;align-items:center;gap:8px;background:#f5e6a8;color:#172014;min-height:44px;margin-top:18px;padding:10px 9px;font-size:10px;font-weight:700;border-radius:7px}.phone-watch svg{width:17px;height:17px;fill:currentColor;flex-shrink:0}.phone-copy h2{font-size:33px}.phone-copy{bottom:24px}.phone-copy p{margin-top:12px}
.lesson-proof{padding:110px 0 100px}.lesson-proof-heading{max-width:940px;margin-bottom:45px}.lesson-proof-heading h2{font-size:clamp(42px,4.4vw,62px)}.lesson-proof-heading>p{font-size:18px;margin-top:25px;max-width:760px}.lesson-proof-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:60px;align-items:start}.lesson-film{padding-top:20px;min-width:0}.lesson-film video{width:100%;aspect-ratio:16/9;display:block;background:#0c1013;border-radius:12px;box-shadow:0 16px 35px #24312425}.lesson-credit{display:flex;gap:12px;align-items:center;margin-top:22px}.lesson-credit img{width:42px;height:42px;border-radius:50%;object-fit:cover;object-position:50% 20%}.lesson-credit strong{font-size:14px}.lesson-credit span{display:block;font-size:11px;color:#626957;margin-top:3px}.lesson-margin{font-size:36px;margin:34px 0 0 45px;color:#9c3b2e;transform:rotate(-6deg);position:relative}.graph-notebook{position:relative;background:#fffdf5;color:#273954;padding:25px 25px 20px;transform:rotate(1deg);box-shadow:5px 18px 35px #2028181c}.graph-task h3{font-size:24px;line-height:1.15}.graph-task p{font-size:12px;margin-top:12px;color:#59657b}.graph-notebook svg{display:block;width:100%;height:auto;margin:8px 0 3px;overflow:visible}.graph-grid path{stroke:#d9ddce;stroke-width:.65}.graph-axis{stroke:#64748a;stroke-width:1.2;fill:none}.graph-labels{fill:#546176;font:12px Onest,sans-serif;text-anchor:middle}.graph-line{fill:none;stroke:#284466;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.graph-points{fill:#284466}.graph-start{fill:#b744301e;stroke:#b74430;stroke-width:2}.graph-guide{fill:none;stroke:#b74430;stroke-width:3;stroke-dasharray:36;stroke-dashoffset:36;transition:stroke-dashoffset .55s cubic-bezier(.16,1,.3,1)}.graph-target{fill:#b74430;opacity:0;transition:opacity .3s}.graph-result{opacity:0;transition:opacity .3s}.graph-result rect{fill:#f5e6a8}.graph-result text{font:700 17px Onest,sans-serif;text-anchor:middle;fill:#24391f}.graph-notebook[data-step="1"] .graph-guide,.graph-notebook[data-step="2"] .graph-guide{stroke-dashoffset:0}.graph-notebook[data-step="1"] .graph-target,.graph-notebook[data-step="2"] .graph-target,.graph-notebook[data-step="2"] .graph-result{opacity:1}.graph-controls{display:flex;gap:5px;border-top:1px solid #d9d7bd;padding-top:15px}.graph-controls button{flex:1;border:0;background:none;color:#526177;font-size:11px;font-weight:600;padding:9px 5px;min-height:44px;border-radius:5px}.graph-controls button[aria-pressed=true]{background:#293e5a;color:#fff}.graph-caption{font-size:13px;line-height:1.6;color:#526177;min-height:65px;margin-top:14px}.lesson-proof+section{position:relative}.subject-lesson-link{display:inline-flex;min-height:44px;align-items:center;text-decoration:underline;text-underline-offset:5px;font-size:14px;margin:5px 0 15px}
@media(max-width:1100px) and (min-width:701px){.lesson-proof-grid{gap:30px;grid-template-columns:1fr 1fr}.graph-notebook{padding:22px}.graph-task h3{font-size:22px}.lesson-margin{font-size:31px;margin-left:15px}.phone-copy h2{font-size:29px}.lesson-credit span{font-size:10px}}
@media(max-width:700px){.lesson-proof{padding:65px 0}.lesson-proof-heading{margin-bottom:25px}.lesson-proof-heading h2{font-size:40px}.lesson-proof-heading>p{font-size:16px}.lesson-proof-grid{grid-template-columns:1fr;gap:35px}.lesson-film{padding:0}.lesson-credit{margin-top:17px}.lesson-credit span{font-size:10px}.lesson-margin{font-size:30px;margin:25px 0 0 25px}.graph-notebook{padding:24px 20px;transform:rotate(.7deg)}.graph-task h3{font-size:25px}.graph-controls button{font-size:10px}.graph-caption{min-height:83px}.phone-copy h2{font-size:29px}.phone-watch{font-size:10px}.phone-copy{left:17px;right:17px}}

.subject-lesson-link[hidden]{display:none}

.lesson-film{position:relative}.lesson-signature{position:absolute;right:5px;bottom:-22px;width:165px;height:190px;object-fit:contain;transform:rotate(13deg) scale(1.4);pointer-events:none}@media(max-width:1100px){.lesson-signature{width:110px;height:150px;right:4px;bottom:-28px;transform:rotate(13deg) scale(1.1)}.lesson-margin{max-width:230px}}@media(max-width:700px){.lesson-signature{right:0;bottom:-15px;width:100px;height:140px}.lesson-margin{margin-left:5px;font-size:28px;max-width:245px}}
/* Review fixes: keep navigation and annotations clear of the hero artwork. */
header>nav{margin-left:auto;margin-right:70px}.phone-stage{padding-top:85px;height:670px}.hero-thought{top:0;left:50%;transform:translateX(-50%) rotate(-5deg);max-width:none;width:290px;text-align:center;font-size:30px}.hero-paper{bottom:-24px;right:-10px}.screen-viewport{overflow:hidden}.screen-viewport img{width:100%;height:auto;display:block}.screen-viewport[data-screen="lesson"]{aspect-ratio:1440/780}.subject-content>.button{margin-top:20px}
@media(min-width:701px) and (max-width:1100px){header>nav{margin-right:25px;gap:18px}.phone-stage{height:610px;padding-top:80px}.hero-thought{font-size:28px;width:265px}.hero-paper{bottom:-20px;right:0}}
@media(max-width:700px){header>nav{margin:0}.phone-stage{height:555px;padding-top:65px;margin-top:20px}.hero-thought{top:0;left:50%;font-size:26px;max-width:none;width:250px}.hero-paper{bottom:-25px;right:0}.subject-content>.button{margin-top:18px}}

.hero-paper{bottom:-55px}@media(max-width:700px){.hero{padding-bottom:95px}.hero-paper{bottom:-55px}}

#large-screen[src$="lesson.jpg"]{clip-path:inset(0 0 8.24% 0);margin-bottom:-4.8%}
/* Final editorial pass: compact opening, connected learning and clear offer. */
header{height:86px}header>nav{margin-right:36px;gap:24px}.hero{padding:20px 0 85px;gap:55px;grid-template-columns:1.18fr 1fr}.hero h1{font-size:clamp(55px,5.1vw,73px);line-height:1.03}.hero-copy>.lead{font-size:23px;margin-top:25px}.hero-copy>p:not(.lead){margin-top:20px;max-width:480px}.hero .actions{gap:15px 25px;margin-top:27px}.hero-trial{display:block;flex-basis:100%;font-size:12px;color:#c6c7c3;margin-top:-4px}.phone-stage{height:545px;padding-top:65px}.phone{width:235px;height:460px;border-radius:37px}.hero-thought{font-size:28px;top:-10px;width:270px}.phone-copy{bottom:22px;left:18px;right:18px}.phone-copy h2{font-size:29px}.hero-paper{font-size:24px;padding:17px 22px;bottom:-40px;right:0}.hero .textlink{font-size:13px}.recognition{padding-block:85px}.recognition-scene{height:460px}.recognition-scene>img{height:400px}.recognition-title h2{font-size:52px}.tour{padding-block:85px}.tour-result{padding-top:17px}.tour-result strong{margin-top:0}.lesson-proof{padding-block:85px}.lesson-proof-heading{margin-bottom:35px}.case-study{padding-block:85px}.case-heading{margin-bottom:30px}.case-choices{margin-bottom:35px}.case-heading h2{font-size:60px}.practice-app-link{color:#f5e6a8;font-size:13px;margin:15px 15px 0;max-width:100%;text-align:left}.practice-app-link span{font-size:20px}.mentor{padding-block:85px}.mentor-intro{display:grid;grid-template-columns:1.15fr 1fr;gap:80px;align-items:end;margin-bottom:40px}.mentor-intro>p{max-width:430px;margin:0;color:#b9c3c6;font-size:18px}.mentor-intro h2{font-size:60px}.mentor-app{border-top:0;padding-top:10px}.mentor-equation{font-size:38px;margin-top:28px}.mentor-equation .fraction{font-size:40px}.mentor-doubt{margin-top:35px}.mentor-doubt .handnote{color:#f5e6a8;font-size:31px}.mentor-doubt p{font-size:14px;color:#b1bec2;max-width:340px;margin-top:23px}.mentor-context{margin-top:28px;padding-top:20px;border-top:1px solid #333d40}.mentor-context span{display:block;font-size:11px;color:#a7b5ba}.mentor-context strong{display:block;font-size:14px;margin-top:8px;font-weight:500}.memory{padding-block:85px}.memory-copy h2{font-size:56px}.subject-content>h3{font-size:33px;line-height:1.1;max-width:460px}.subject-content>p{font-size:15px;color:#535551;margin-top:18px}.subject-topics-title{font-size:12px;color:#555752;margin-top:25px}.subject-content ul{margin-top:8px}.subject-content li{font-size:14px;padding:12px 0}.subject-content .subject-access{font-size:12px;max-width:340px;margin-top:17px;color:#555752}.subject-art{min-height:490px}.subject-detail{gap:65px}.subject-tabs{margin-bottom:35px}.subject-lesson-link{display:block;width:fit-content;margin-top:10px}.subject-content>.button{margin-top:16px}.price{padding-block:100px;gap:80px}.price-intro h2{font-size:56px}.price-intro .lead{font-size:27px;margin-top:30px}.price-intro>p{max-width:440px}.price-intro>img{width:270px;height:220px;margin:30px 0 0 70px}.price-sheet{padding:35px 38px;transform:rotate(1.2deg)}.price-number{display:flex;align-items:center;gap:18px}.price-number>strong{font-size:86px;font-weight:800;letter-spacing:-.04em;line-height:1}.price-number>span{font-size:17px;line-height:1.35;color:#425336}.price-sheet ul{margin-block:25px}.price-sheet li{padding:16px 0}.price-sheet li strong{min-width:0;font-size:13px;max-width:170px}.price-sheet li span{max-width:170px;font-size:11px}.price-after{font-size:11px}.faq{padding-bottom:85px}.finish{padding-top:80px}.finish h2{font-size:61px}.finish-person{height:500px}
@media(min-width:701px) and (max-width:1100px){header>nav{gap:16px;margin-right:18px;font-size:12px}.hero{gap:30px}.hero h1{font-size:55px}.hero-copy>.lead{font-size:20px}.hero-copy>p:not(.lead){font-size:14px}.hero .actions{gap:12px}.hero .button{font-size:13px;padding:14px 20px}.phone-stage{height:505px}.phone{width:210px;height:420px}.phone-copy h2{font-size:25px}.phone-copy p{font-size:10px}.phone-watch{font-size:9px}.hero-paper{font-size:21px;padding:15px 18px;bottom:-35px}.hero-thought{font-size:25px;width:230px}.recognition-title h2{font-size:46px}.case-heading h2,.mentor-intro h2{font-size:49px}.mentor-intro{gap:40px}.mentor-intro>p{font-size:16px}.memory-copy h2{font-size:47px}.subject-content>h3{font-size:29px}.subject-detail{gap:35px}.subject-art{min-height:470px}.price{gap:40px}.price-intro h2{font-size:47px}.price-sheet{padding:30px}.price-number>strong{font-size:75px}.price-number>span{font-size:15px}.price-sheet li{display:flex}.finish h2{font-size:49px}}
@media(max-width:700px){header{height:76px}.hero{padding:22px 0 80px;gap:5px;grid-template-columns:1fr}.hero h1{font-size:clamp(42px,10.7vw,62px)}.hero-copy>.lead{font-size:20px;margin-top:22px}.hero-copy>p:not(.lead){font-size:15px;margin-top:17px}.hero .actions{display:grid;grid-template-columns:1fr;gap:9px;margin-top:24px}.hero .textlink{justify-self:start;min-height:40px}.hero-trial{font-size:11px;margin-top:0}.phone-stage{height:535px;margin-top:18px;padding-top:65px}.phone{width:225px;height:440px}.hero-thought{font-size:26px;top:0;width:250px}.hero-paper{font-size:22px;padding:17px 22px;bottom:-36px;right:0}.phone-copy h2{font-size:28px}.recognition,.tour,.lesson-proof,.case-study,.mentor,.memory{padding-block:65px}.recognition-title h2{font-size:40px}.recognition-scene{height:420px}.recognition-scene>img{height:370px}.case-heading h2,.mentor-intro h2,.memory-copy h2{font-size:41px}.case-heading{margin-bottom:20px}.case-choices{margin-bottom:28px}.practice-app-link{font-size:12px;margin-left:8px}.mentor-intro{grid-template-columns:1fr;gap:20px;margin-bottom:28px}.mentor-intro>p{font-size:16px}.mentor-equation .fraction{font-size:37px}.mentor-doubt .handnote{font-size:29px}.mentor-bottom{gap:18px}.subject-detail{gap:25px}.subject-art{min-height:300px}.subject-content>h3{font-size:29px}.subject-content>p{font-size:15px}.subject-content li{font-size:14px}.subject-topics-title{margin-top:22px}.subject-content .subject-access{font-size:12px}.price{padding-block:65px;gap:35px}.price-intro h2{font-size:42px}.price-intro .lead{font-size:24px;margin-top:25px}.price-intro>img{width:230px;height:170px;margin:25px auto 0}.price-sheet{padding:28px 24px}.price-number>strong{font-size:76px}.price-number>span{font-size:15px}.price-sheet li strong{font-size:13px;max-width:150px}.price-sheet li span{font-size:11px;max-width:130px}.faq{padding-bottom:65px}.finish{padding-top:65px}.finish h2{font-size:43px}.finish-person{height:390px}}
.math-track{display:flex;gap:5px;margin-top:20px}.math-track[hidden]{display:none}.math-track button{background:none;border:1px solid #b8bab5;color:#393b38;padding:8px 18px;border-radius:7px;font-size:12px;min-height:42px}.math-track button[aria-pressed=true]{background:#242526;color:#fff;border-color:#242526}

/* Final narrow-screen fit: keep the hand and the long price heading inside their columns. */
@media(min-width:701px) and (max-width:900px){.price-intro h2{font-size:40px}}
@media(max-width:700px){.lesson-signature{right:24px}}
@media(min-width:701px) and (max-width:900px){.price-intro>img{width:230px;margin-left:auto;margin-right:auto}}

/* Palette: charcoal, clean paper, Delta red; yellow reserved for study notes. */
:root{--action:#cf3326;--action-hover:#b82b20;--on-dark-accent:#ff6758}
.opening em,.finish em{color:var(--on-dark-accent)}
.hero .light-button,.finish .light-button,.price-sheet .button{background:var(--action);color:#fff}
.hero .light-button:hover,.finish .light-button:hover,.price-sheet .button:hover{background:var(--action-hover)}
.price-sheet{background:#fff;color:var(--ink);box-shadow:8px 20px 40px #16171912}
.price-number>span,.price-sheet li span,.price-after{color:#5b5c58}
.price-sheet li{border-color:#deded8}
.price-sheet ul{margin-top:32px}
.subject-tabs button[aria-selected=true]{background:#fff;color:#1b1c1a;box-shadow:0 5px 12px #1415140c}
.tour-steps button[aria-selected=true]{color:#20211f;border-bottom-color:#c73528}
.message.student{background:#34312b;color:#f7f2e7}
:focus-visible{outline-color:#d84334}
::selection{background:#f5b8ae;color:#191919}

/* Tactile accents: inspect a step, bookmark what matters. */
.case-magnifier{position:absolute;top:115px;right:20px;width:190px;height:135px;object-fit:contain;pointer-events:none;transform:rotate(-8deg)}
.memory-scene>img.bookmark-hand{width:410px;height:285px;top:-75px;right:0;transform:rotate(-5deg);object-fit:contain;pointer-events:none}
@media(min-width:701px) and (max-width:1100px){.case-magnifier{width:135px;height:110px;right:10px;top:135px}.memory-scene>img.bookmark-hand{width:310px;height:250px;top:-45px}}
@media(max-width:700px){.case-magnifier{width:115px;height:100px;top:120px;right:10px}.memory-scene>img.bookmark-hand{width:280px;height:210px;top:-45px;right:0}}
@media(max-width:400px){.case-magnifier{width:75px;height:80px;right:5px;top:140px}}
/* Complete editorial objects and living learning scenes. */
.product-collage{position:relative;min-width:0;padding-top:180px}.product-collage .app-window{position:relative;z-index:1}.tour-student{position:absolute;width:255px;height:220px;object-fit:contain;right:100px;top:-12px;z-index:2;pointer-events:none}
.study-moment{display:grid;grid-template-columns:1.4fr 1fr;gap:65px;align-items:center;padding-block:85px}.study-photo{transform:rotate(-1.5deg)}.study-photo img{width:100%;aspect-ratio:1.4;object-fit:cover;box-shadow:8px 20px 40px #1617191a}.study-caption h2{font-size:56px}.study-caption>p:not(.understanding){font-size:18px}.understanding{font:700 50px/1.1 Caveat,cursive;color:#263b57;transform:rotate(-5deg);margin:0 0 30px;white-space:nowrap}.understanding del{text-decoration:none;position:relative}.understanding del:after{content:'';position:absolute;left:-5px;right:-8px;height:5px;background:#cf3326;top:55%;transform:rotate(-12deg)}.study-caption .textlink{margin-top:18px}
.case-eraser{position:absolute;top:125px;right:20px;width:165px;height:115px;object-fit:contain;transform:rotate(12deg);pointer-events:none}
.memory-scene{padding-top:245px}.memory-scene>img.memory-finger{width:230px;height:340px;top:-70px;right:35px;transform:rotate(9deg);object-fit:contain;pointer-events:none}
.subject-choice-row{display:flex;align-items:center;gap:30px;margin-top:-15px;margin-bottom:15px;min-height:100px}.subject-choice-row .exam-picker{margin:0}.subject-pointer{width:190px;height:105px;object-fit:contain;transform:rotate(-8deg);pointer-events:none}
.mentor-listen{display:flex;align-items:center;gap:25px;margin-top:25px}.mentor-listen img{width:110px;height:150px;object-fit:contain;transform:rotate(-12deg)}.mentor-listen .handnote{font-size:28px;color:#f5e6a8}.faq .section-head>p{position:relative;padding-right:115px;max-width:370px;min-height:115px;display:flex;align-items:center}.faq-key{position:absolute;right:0;top:0;width:105px;height:115px;object-fit:contain;transform:rotate(9deg);pointer-events:none}
.finish>.wrap{position:relative}.finish-plane{position:absolute;left:43%;top:-45px;width:175px;height:130px;object-fit:contain;transform:rotate(-12deg);pointer-events:none;z-index:2}
@media(hover:hover){.exam-sheet,.practice-ticket,.memory-paper{transition:box-shadow .25s}.exam-sheet:hover,.practice-ticket:hover,.memory-paper:hover{box-shadow:10px 24px 40px #0003}.price-intro>img{transition:transform .25s}.price-intro>img:hover{transform:translateY(4px) rotate(-9deg) scale(1.15)}.subject-tabs button{position:relative}.subject-tabs button:after{content:'';position:absolute;height:2px;background:#cf3326;left:13px;right:13px;bottom:5px;transform:scaleX(0);transform-origin:left;transition:transform .25s}.subject-tabs button:hover:after,.subject-tabs button[aria-selected=true]:after{transform:scaleX(1)}}
.work-roots del:after{animation:mark-error .4s .2s both;transform-origin:left}@keyframes mark-error{from{transform:rotate(-28deg) scaleX(0)}to{transform:rotate(-28deg) scaleX(1)}}
@media(min-width:701px) and (max-width:1100px){.tour-student{right:40px;width:220px;height:195px}.product-collage{padding-top:160px}.study-moment{gap:35px}.study-caption h2{font-size:44px}.understanding{font-size:40px}.case-eraser{width:110px;height:90px;top:145px;right:10px}.memory-scene>img.memory-finger{height:300px;width:200px;right:10px;top:-40px}.finish-plane{width:130px;left:40%;top:-40px}}
@media(max-width:700px){.product-collage{padding-top:150px}.tour-student{width:205px;height:180px;top:-5px;right:35px}.study-moment{grid-template-columns:1fr;gap:35px;padding-block:60px}.study-photo img{aspect-ratio:1.35}.study-caption h2{font-size:42px}.understanding{font-size:43px;margin-bottom:20px}.study-caption>p:not(.understanding){font-size:16px}.case-eraser{width:95px;height:90px;right:8px;top:135px}.memory-scene{padding-top:225px}.memory-scene>img.memory-finger{height:290px;width:195px;right:25px;top:-35px}.subject-choice-row{gap:15px;min-height:95px;margin-top:0;margin-bottom:20px}.subject-pointer{width:135px;height:95px}.mentor-listen img{width:85px;height:110px}.mentor-listen{gap:20px;margin-top:20px}.faq .section-head>p{max-width:none;width:100%;padding-right:115px;min-height:100px}.faq-key{width:95px;height:100px}.finish-plane{position:static;width:150px;height:110px;grid-column:1;justify-self:end;margin-top:-20px;margin-bottom:-60px}.finish-person{margin-top:0}}
@media(max-width:400px){.case-eraser{width:68px;right:5px;top:145px}}
@media(prefers-reduced-motion:reduce){.work-roots del:after{animation:none}.price-intro>img,.subject-tabs button:after{transition:none}}
@media(max-width:700px){.finish-plane{justify-self:start;height:85px;width:140px;margin:10px 0 -35px}.finish-person{margin-top:75px}.finish-person .thought-cloud{top:-75px;right:0;font-size:25px;max-width:205px}}
/* Composition refinement: imagery belongs to the content, not extra spacer rows. */
.product-collage{padding-top:0;width:100%}.tour-panel{position:relative}.tour-student-man{display:block;width:235px;height:235px;object-fit:contain;object-position:bottom;margin:20px auto -15px;pointer-events:none}.tour-stage{align-items:center}.subject-choice-row{min-height:44px;margin:0 0 25px;display:block}.subject-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 20px;margin-bottom:35px}.subject-tabs button{min-height:65px;text-align:left;border-radius:0;border-bottom:1px solid #c9ccc5;padding:14px 12px;position:relative;font-size:15px}.subject-tabs button[aria-selected=true]{padding-right:115px;background:#fff;box-shadow:none}.subject-tabs button .subject-pointer{position:absolute;right:9px;top:50%;transform:translateY(-50%);width:105px;height:65px;object-fit:contain;pointer-events:none}.subject-tabs button:after{display:none}.work-roots{position:relative;width:max-content}.work-eraser{position:absolute;left:calc(100% + 20px);top:-20px;width:145px;height:100px;max-width:none;object-fit:contain;transform:rotate(12deg);pointer-events:none}.study-moment{padding-block:45px;gap:55px}.study-photo img{height:280px;aspect-ratio:auto;object-fit:cover;object-position:50% 40%}.study-caption h2{font-size:40px}.study-caption>p:not(.understanding){font-size:16px;margin-top:15px}.understanding{font-size:40px;margin-bottom:15px}.study-caption .textlink{margin-top:10px}
@media(min-width:701px) and (max-width:1100px){.tour-student-man{width:195px;height:195px;margin-top:15px}.subject-tabs{gap:0 12px}.subject-tabs button{font-size:13px}.subject-tabs button[aria-selected=true]{padding-right:85px}.subject-tabs button .subject-pointer{width:80px;height:55px;right:3px}.work-eraser{width:90px;left:calc(100% + 5px);height:75px}.study-moment{gap:30px}.study-caption h2{font-size:34px}}
@media(max-width:700px){.product-collage{padding-top:0}.tour-panel{padding-right:100px;min-height:260px}.tour-student-man{position:absolute;right:-8px;bottom:0;width:115px;height:145px;margin:0}.tour-panel h3{font-size:25px}.tour-panel>p{font-size:14px}.tour-panel .text-button{font-size:12px}.tour-result{font-size:14px}.subject-tabs{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 10px}.subject-tabs button{font-size:13px;min-height:67px;padding:12px 8px}.subject-tabs button[aria-selected=true]{padding-right:65px}.subject-tabs button .subject-pointer{width:62px;height:52px;right:0}.subject-choice-row{min-height:44px;margin-bottom:20px}.work-eraser{left:calc(100% + 5px);top:-12px;width:75px;height:65px}.study-moment{padding-block:40px;gap:25px}.study-photo img{height:225px;object-position:center}.study-caption h2{font-size:35px}.understanding{font-size:37px}}

@media(max-width:400px){.subject-tabs button[aria-selected=true]{font-size:12px;padding-right:43px}.subject-tabs button .subject-pointer{width:42px;height:45px}}

.student-work>.work-roots{animation:none;clip-path:none}

/* Product mechanics: details follow the selected stage. */
.tour-mechanics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin-top:38px}.tour-mechanics article{border-top:1px solid var(--line);padding-top:18px}.tour-mechanics article>span{font-size:12px;color:var(--red);font-weight:700}.tour-mechanics h4{font-size:18px;line-height:1.3;margin:10px 0 0;letter-spacing:-.02em}.tour-mechanics p{font-size:14px;line-height:1.65;margin-top:12px}.mentor-listen img{transform:rotate(-14deg)}
@media(max-width:700px){.tour-mechanics{grid-template-columns:1fr;gap:20px;margin-top:28px}.tour-mechanics article{padding-top:14px}.tour-mechanics h4{font-size:18px}.tour-mechanics p{font-size:14px}.tour-panel{min-height:250px}}