@import"https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:opsz,wght@9..40,400;9..40,500;9..40,600;9..40,700&family=Fraunces:opsz,wght@9..144,600;9..144,700&display=swap";:root{color:#24312d;background:#f4f1ea;font-family:DM Sans,ui-sans-serif,system-ui,sans-serif;font-synthesis:none;--paper: #f4f1ea;--paper-soft: #fcfbf6;--ink: #20312c;--muted: #66746c;--sage: #247766;--sage-bright: #79b9a1;--forest: #102f28;--line: #d7d8ce}*{box-sizing:border-box}html{scroll-behavior:smooth}[hidden]{display:none!important}body{margin:0;min-width:320px;overflow-x:clip;background:var(--paper)}body.model-expanded{overflow:hidden}html[data-anatomy-calibration=enabled]{scroll-behavior:auto}.calibration-audit-controls{position:fixed;z-index:120;right:16px;bottom:16px;display:flex;align-items:center;gap:9px;padding:8px 10px;border:1px solid rgba(27,70,58,.22);border-radius:999px;background:#fcfbf6f0;box-shadow:0 8px 26px #1b372e1f;color:#50675e;font-family:DM Mono,monospace;font-size:9px}.calibration-audit-controls button{padding:5px 9px;border:0;border-radius:999px;color:#fff;background:#1f7664;cursor:pointer;font:inherit}.calibration-prediction-hidden .lesson-card{visibility:hidden}button,a{font:inherit}button{color:inherit}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:3px solid #71b7a1;outline-offset:4px}.skip-link{position:fixed;z-index:100;top:10px;left:12px;padding:10px 14px;border-radius:10px;color:#fff;background:var(--forest);text-decoration:none;transform:translateY(-150%)}.skip-link:focus{transform:none}.entrance-track{position:relative;width:100%;min-height:100svh;background:#102b25}.entrance-track[data-entrance-state=checking]{visibility:hidden}.entrance-track[data-entrance-state=active]{height:340svh}.entrance-track[data-entrance-state=active] .entrance-pin{position:sticky;top:0}.entrance-pin{position:relative;width:100%;height:100svh;overflow:hidden;--entrance-camera-x: 0px;--entrance-camera-y: 0px;--entrance-camera-scale-x: 1;--entrance-camera-scale-y: 1;--entrance-scene-opacity: 1;--entrance-clarity: 0;--entrance-copy-opacity: 1;--entrance-chrome-opacity: 1;--entrance-edge-opacity: 1}.entrance-world,.entrance-world-canvas,.entrance-camera-plane,.entrance-scene{position:absolute}.entrance-world{z-index:1;inset:0;overflow:hidden;background:var(--forest);opacity:var(--entrance-scene-opacity)}.entrance-world-canvas{top:50%;left:50%;width:max(100vw,177.6833svh);height:max(100svh,56.28vw);transform:translate3d(-50%,-50%,0)}.entrance-camera-plane{inset:0;transform:translate3d(var(--entrance-camera-x),var(--entrance-camera-y),0) scaleX(var(--entrance-camera-scale-x)) scaleY(var(--entrance-camera-scale-y));transform-origin:50% 68.28%;will-change:transform}.entrance-scene{inset:0;width:100%;height:100%;object-fit:fill}.entrance-portal-anchor{position:absolute;top:65.25%;left:47.31%;width:5.38%;height:6.06%;visibility:hidden;pointer-events:none}.site-shell{position:relative;min-height:100vh;background:var(--paper)}.site-shell[data-entrance-handoff-target]{position:fixed!important;z-index:4;top:0;left:0;width:100vw!important;max-width:none!important;height:100vh!important;min-height:0!important;max-height:100vh!important;overflow:hidden!important;border-radius:var(--entrance-handoff-radius, 18px);background:var(--paper);box-shadow:0 0 0 1px rgba(4,20,14,var(--entrance-handoff-border-alpha, .48)),0 18px 48px rgba(3,20,14,var(--entrance-handoff-shadow-alpha, .3));opacity:var(--entrance-handoff-opacity, .9);filter:blur(var(--entrance-handoff-blur, 6px));pointer-events:none;transform:translate3d(var(--entrance-handoff-x, 0px),var(--entrance-handoff-y, 0px),0) scaleX(var(--entrance-handoff-scale-x, 1)) scaleY(var(--entrance-handoff-scale-y, 1));transform-origin:0 0;will-change:transform,filter,opacity}.entrance-edge-fog{position:absolute;z-index:3;inset:-26px;pointer-events:none;background:radial-gradient(circle at 0 0,rgba(13,35,29,.65),transparent 38%),radial-gradient(circle at 100% 0,rgba(16,40,32,.55),transparent 36%),radial-gradient(circle at 0 100%,rgba(7,25,20,.72),transparent 40%),radial-gradient(circle at 100% 100%,rgba(7,24,19,.68),transparent 40%);-webkit-backdrop-filter:blur(13px) saturate(.86);backdrop-filter:blur(13px) saturate(.86);-webkit-mask-image:radial-gradient(ellipse 73% 67% at 50% 50%,transparent 44%,rgba(0,0,0,.26) 72%,#000 100%);mask-image:radial-gradient(ellipse 73% 67% at 50% 50%,transparent 44%,rgba(0,0,0,.26) 72%,#000 100%);opacity:var(--entrance-edge-opacity)}.entrance-atmosphere{position:absolute;z-index:2;inset:0;pointer-events:none;background:linear-gradient(180deg,#081c1714,#0718132e),radial-gradient(65% 60% at 50% 45%,transparent 43%,rgba(4,20,15,.25));opacity:var(--entrance-edge-opacity)}.entrance-nav{position:absolute;z-index:7;top:0;right:0;left:0;display:flex;align-items:center;justify-content:space-between;width:min(calc(100% - 56px),1540px);margin:0 auto;padding:24px 0;color:#15342c;opacity:var(--entrance-chrome-opacity)}.entrance-brand{display:inline-flex;align-items:center;gap:10px;padding:0;border:0;color:inherit;background:none;cursor:pointer;font-size:14px;font-weight:700;text-align:left;text-decoration:none}.entrance-brand em{color:#426158;font-style:normal;font-weight:500}.entrance-nav>span{font-family:DM Mono,monospace;font-size:9px;letter-spacing:.1em;text-transform:uppercase}.entrance-copy{position:absolute;z-index:6;top:14.5svh;left:50%;width:min(760px,calc(100% - 40px));color:#17362e;text-align:center;transform:translate(-50%);opacity:var(--entrance-copy-opacity);text-shadow:0 1px 18px rgba(255,253,244,.76)}.entrance-copy .eyebrow{color:#426e60}.entrance-copy h1{margin:11px 0 13px;color:inherit;font-size:clamp(44px,5vw,78px);line-height:.94}.entrance-copy h1 em{color:#2c7161;font-style:italic}.entrance-copy>p:last-child{max-width:520px;margin:0 auto;color:#3c554d;font-size:clamp(14px,1.35vw,18px);line-height:1.5}.entrance-disclosure{position:absolute;z-index:7;bottom:22px;left:28px;max-width:430px;margin:0;color:#faf8f1d1;font-size:10px;line-height:1.45;opacity:var(--entrance-chrome-opacity)}.entrance-progress{position:absolute;z-index:7;bottom:25px;left:50%;display:flex;align-items:center;gap:10px;color:#faf8f1eb;font-family:DM Mono,monospace;font-size:9px;letter-spacing:.1em;text-transform:uppercase;transform:translate(-50%);opacity:var(--entrance-chrome-opacity)}.entrance-progress i{position:relative;display:block;width:35px;height:1px;overflow:hidden;background:#ffffff47}.entrance-progress i:after{position:absolute;inset:0;background:#fff;content:"";animation:progress-pulse 1.8s ease-in-out infinite;transform:translate(-110%)}@keyframes progress-pulse{60%,to{transform:translate(110%)}}.entrance-skip{position:absolute;z-index:8;right:26px;bottom:17px;padding:8px 10px;border:1px solid rgba(255,255,255,.38);border-radius:999px;color:#fff;background:#07191480;cursor:pointer;font-size:10px;font-weight:600;letter-spacing:.06em;opacity:var(--entrance-chrome-opacity);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.topbar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;width:min(1440px,100%);margin:0 auto;padding:20px clamp(18px,4vw,68px);border-bottom:1px solid rgba(113,129,119,.17);background:#f4f1eaeb}.brand{display:inline-flex;align-items:center;gap:11px;color:inherit;font-size:15px;font-weight:700;letter-spacing:-.02em;text-decoration:none}.brand em{color:#6a776e;font-style:normal;font-weight:500}.brand-mark{display:grid;width:31px;height:31px;place-items:center;border-radius:10px 10px 10px 2px;background:var(--sage);color:#fff;font-family:Fraunces,serif;font-size:17px}.lesson-nav{display:flex;align-items:center;gap:clamp(18px,3vw,36px)}.lesson-nav a{color:#58675f;font-size:12px;font-weight:600;text-decoration:none}.lesson-nav a:hover{color:var(--sage)}.replay-button{justify-self:end;padding:8px 0;border:0;color:#6a786f;background:none;cursor:pointer;font-size:11px;text-decoration:underline;text-decoration-color:#aeb9b0;text-underline-offset:4px}.page-shell{width:min(1440px,100%);margin:0 auto;padding:0 clamp(18px,4vw,68px) 44px}.eyebrow{margin:0;color:#708076;font-family:DM Mono,monospace;font-size:10px;font-weight:500;letter-spacing:.11em;text-transform:uppercase}h1,h2,h3{text-wrap:balance}h1{margin:11px 0 14px;color:var(--ink);font-family:Fraunces,Georgia,serif;font-size:clamp(46px,6.3vw,88px);font-weight:600;letter-spacing:-.063em;line-height:.94}h1 span{color:#397d6e}.hero-section{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(290px,.7fr);gap:clamp(32px,7vw,105px);min-height:640px;padding:clamp(72px,9vw,130px) 0 92px;align-items:center}.hero-copy{max-width:760px}.lede{max-width:625px;margin:0;color:#5f6d65;font-size:clamp(16px,1.65vw,19px);line-height:1.6}.hero-actions{display:flex;align-items:center;gap:20px;margin-top:30px}.hero-actions>span{color:#849087;font-family:DM Mono,monospace;font-size:9px;letter-spacing:.06em;text-transform:uppercase}.primary-action{display:inline-flex;align-items:center;gap:23px;padding:13px 16px 13px 19px;border-radius:999px;color:#fff;background:var(--forest);font-size:13px;font-weight:600;text-decoration:none}.primary-action span{display:grid;width:25px;height:25px;place-items:center;border-radius:50%;color:var(--forest);background:#aad3c2}.lesson-objective{position:relative;overflow:hidden;padding:27px 28px 25px;border:1px solid #cdd8cf;border-radius:24px;background:#e6eee7;box-shadow:0 24px 70px #25413614}.objective-number{position:absolute;top:4px;right:18px;color:#30705c1a;font-family:Fraunces,serif;font-size:92px;font-weight:700;line-height:1}.lesson-objective h2{position:relative;max-width:250px;margin:46px 0 11px;color:#28463c;font-family:Fraunces,serif;font-size:clamp(27px,2.7vw,38px);font-weight:600;letter-spacing:-.045em;line-height:1}.lesson-objective>p:not(.eyebrow){margin:0;color:#5a7168;font-size:14px;line-height:1.55}.lesson-objective ul{display:grid;gap:10px;margin:24px 0 0;padding:18px 0 0;border-top:1px solid #c8d7cd;list-style:none}.lesson-objective li{display:flex;align-items:center;gap:10px;color:#3d5b50;font-size:12px;font-weight:600}.lesson-objective li span{color:#478472;font-family:DM Mono,monospace;font-size:9px}.studio-section{scroll-margin-top:20px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:32px;margin-bottom:26px}.section-heading h2,.practice-copy h2,.boundaries-section h2{margin:8px 0 0;color:var(--ink);font-family:Fraunces,Georgia,serif;font-size:clamp(34px,4vw,57px);font-weight:600;letter-spacing:-.05em;line-height:.98}.section-heading>p{max-width:410px;margin:0;color:#6d7a72;font-size:14px;line-height:1.55}.anatomy-workspace{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(290px,.78fr);gap:20px;align-items:stretch}.model-card,.lesson-card,.method-strip{border:1px solid var(--line);border-radius:24px;background:var(--paper-soft);box-shadow:0 20px 58px #394d4314}.model-card{overflow:hidden}.model-toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:16px 17px 0}.model-toolbar-actions{display:flex;align-items:center;gap:8px}.view-switcher{display:inline-flex;gap:3px;padding:3px;border:1px solid #d7ddd5;border-radius:12px;background:#edf0eb}.view-button,.reset-button,.expand-button{border:0;border-radius:9px;cursor:pointer;font-size:13px;font-weight:600;transition:.16s ease}.view-button,.reset-button{color:#53635a;background:transparent}.view-button{min-width:59px;padding:7px 10px}.view-button:hover,.reset-button:hover{color:var(--sage)}.view-button.is-active{color:#f8fffb;background:var(--sage);box-shadow:0 2px 6px #17524438}.reset-button{padding:8px 9px;text-decoration:underline;text-decoration-color:#bac4ba;text-underline-offset:3px}.expand-button{display:inline-flex;min-height:34px;align-items:center;gap:8px;padding:7px 9px 7px 12px;color:#f7fbf8;background:var(--forest);box-shadow:0 3px 10px #143a3129}.expand-button:hover{background:#1d594c;transform:translateY(-1px)}.expand-icon{display:grid;width:19px;height:19px;place-items:center;border-radius:6px;color:var(--forest);background:#afd6c6;font-size:15px;line-height:1}.expanded-hint{display:none}.model-card.is-expanded{position:fixed;z-index:90;inset:0;display:flex;width:100vw;height:100vh;height:100dvh;max-width:none;max-height:none;flex-direction:column;border:0;border-radius:0;background:#f8f8f4;box-shadow:none}.model-card.is-expanded .model-toolbar{flex:0 0 auto;padding:max(12px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) 12px max(16px,env(safe-area-inset-left));border-bottom:1px solid #e1e5dd;background:#fcfbf6f0}.model-card.is-expanded .canvas-wrap{flex:1 1 auto;min-height:0}.model-card.is-expanded .calibration-note{flex:0 0 auto;padding-right:max(17px,env(safe-area-inset-right));padding-bottom:max(13px,env(safe-area-inset-bottom));padding-left:max(17px,env(safe-area-inset-left));background:#fcfbf6}.model-card.is-expanded .expanded-hint{display:inline}.model-card.is-expanded .canvas-hint{bottom:14px}.canvas-wrap{position:relative;min-height:clamp(465px,52vw,655px)}.model-stage{position:absolute;inset:0;cursor:grab;touch-action:none}.model-stage:active{cursor:grabbing}.model-stage canvas{display:block;width:100%;height:100%;outline:none}.loading-state{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:13px;color:#65746b;font-family:DM Mono,monospace;font-size:11px;letter-spacing:.04em}.loading-orbit{width:29px;height:29px;border:2px solid #c9d9d0;border-top-color:#2d846f;border-radius:50%;animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.canvas-hint{position:absolute;z-index:1;bottom:10px;left:50%;width:max-content;max-width:calc(100% - 24px);margin:0;padding:8px 12px;border:1px solid rgba(198,208,199,.75);border-radius:100px;color:#64736a;background:#fffffcc7;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);font-size:11px;transform:translate(-50%)}.canvas-hint span{color:var(--sage);font-weight:700}.calibration-note{display:flex;align-items:center;gap:7px;margin:0;padding:13px 17px 16px;border-top:1px solid #ecebe4;color:#718076;font-family:DM Mono,monospace;font-size:10px}.calibration-note code{color:#56665d;font-family:inherit}.status-dot{width:7px;height:7px;border-radius:50%;background:#47a48b;box-shadow:0 0 0 3px #e3f0e9}.lesson-card{display:flex;min-height:100%;flex-direction:column;padding:27px clamp(20px,2.4vw,34px)}.selection-heading{display:flex;align-items:center;justify-content:space-between;gap:14px}.lesson-step{color:#93a097;font-family:DM Mono,monospace;font-size:8px;letter-spacing:.08em}.challenge-status{margin:19px 0 0;padding:13px 14px;border:1px solid #b9d6c9;border-radius:14px;background:#edf5f0}.challenge-status>span{display:block;color:#5f7e72;font-family:DM Mono,monospace;font-size:8px;letter-spacing:.08em;text-transform:uppercase}.challenge-status strong{display:block;margin-top:5px;color:#285f50;font-family:Fraunces,serif;font-size:20px}.challenge-status p{margin:4px 0 0;color:#628076;font-size:11px}.challenge-status.is-correct{border-color:#6eb69e;background:#dff1e8}.challenge-status.is-wrong{border-color:#dbc995;background:#f7f0dc}.challenge-status button{margin-top:9px;padding:0;border:0;color:#657c73;background:none;cursor:pointer;font-size:10px;text-decoration:underline;text-underline-offset:3px}.lesson-empty{display:grid;min-height:355px;align-content:center;justify-items:start}.target-glyph{position:relative;width:66px;height:66px;margin-bottom:21px;border:1px solid #9bc1b4;border-radius:50%;background:#e8f1eb}.target-glyph:before,.target-glyph:after{position:absolute;top:50%;left:50%;background:#41917c;content:"";transform:translate(-50%,-50%)}.target-glyph:before{width:34px;height:1px}.target-glyph:after{width:1px;height:34px}.target-glyph span{position:absolute;top:25px;left:25px;width:14px;height:14px;border:2px solid #267762;border-radius:50%}.lesson-card h2{margin:0;color:#26362f;font-family:Fraunces,Georgia,serif;font-size:clamp(27px,2.7vw,37px);font-weight:600;letter-spacing:-.045em;line-height:1.04}.lesson-empty p{max-width:290px;margin:12px 0 0;color:#68766d;font-size:15px;line-height:1.52}.location-kicker{margin:34px 0 9px;color:#27806c;font-family:DM Mono,monospace;font-size:10px;font-weight:500;letter-spacing:.1em}.location-description{margin:14px 0 28px;color:#68776e;font-size:15px;line-height:1.5}.lesson-facts{display:grid;gap:15px;margin:0}.lesson-facts div{padding-top:14px;border-top:1px solid #e1e4db}.lesson-facts dt{margin-bottom:5px;color:#77857b;font-family:DM Mono,monospace;font-size:10px;letter-spacing:.08em;text-transform:uppercase}.lesson-facts dd{margin:0;color:#405248;font-size:14px;line-height:1.48}.method-note{margin:auto 0 0;padding-top:20px;color:#849087;font-size:11px;line-height:1.48}.keyboard-landmarks{margin-top:auto;padding-top:18px;border-top:1px solid #e1e4db;color:#5f7067}.keyboard-landmarks summary{cursor:pointer;font-size:11px;font-weight:600;list-style-position:outside}.keyboard-landmarks>p{margin:7px 0 11px;color:#87938b;font-family:DM Mono,monospace;font-size:8px;letter-spacing:.05em;text-transform:uppercase}.keyboard-landmarks>div{display:flex;flex-wrap:wrap;gap:6px}.keyboard-landmarks button{padding:6px 9px;border:1px solid #cbd7ce;border-radius:999px;color:#476157;background:#f6f7f2;cursor:pointer;font-size:10px}.keyboard-landmarks button:hover,.keyboard-landmarks button:focus-visible{border-color:#6fae99;color:#1f6f5e;background:#e7f1eb}.method-strip{position:relative;margin-top:20px;padding:24px 25px 22px;overflow:hidden}.method-strip:after{position:absolute;top:-50px;right:-35px;width:180px;height:180px;border:1px solid #d7e3da;border-radius:50%;content:""}.method-strip ol{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin:20px 0 0;padding:0;list-style:none}.method-strip li{display:grid;color:#65746b;font-size:13px;line-height:1.45}.method-strip li>span{margin-bottom:7px;color:#24806b;font-family:DM Mono,monospace;font-size:9px}.method-strip li strong{margin-bottom:3px;color:#344b42;font-size:14px}.mesh-note{margin:18px 0 0;padding-top:15px;border-top:1px solid #e5e6de;color:#839087;font-family:DM Mono,monospace;font-size:9px}.pathway-section{margin-top:105px;padding:clamp(34px,5vw,66px);border-radius:30px;color:#eef5f0;background:var(--forest)}.section-heading-light h2{color:#f4f2e9}.section-heading-light .eyebrow{color:#86b5a3}.section-heading-light>p{color:#9fb7ae}.pathway-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:42px;overflow:hidden;border:1px solid rgba(221,239,231,.15);border-radius:20px;background:#ffffff1f}.pathway-grid article{min-height:290px;padding:26px;background:#143a31}.pathway-grid article>span{display:grid;width:35px;height:35px;margin-bottom:55px;place-items:center;border:1px solid rgba(197,225,214,.28);border-radius:50%;color:#89bba8;font-family:DM Mono,monospace;font-size:9px}.pathway-grid .eyebrow{color:#75a896}.pathway-grid h3{margin:9px 0 10px;color:#f1f3ec;font-family:Fraunces,serif;font-size:26px;font-weight:600;letter-spacing:-.04em}.pathway-grid article>p:last-child{margin:0;color:#9db3ab;font-size:13px;line-height:1.55}.practice-section{display:grid;grid-template-columns:.88fr 1.12fr;gap:clamp(45px,8vw,120px);padding:120px 0;align-items:center}.practice-copy>p:not(.eyebrow):not(.practice-note){max-width:460px;margin:19px 0 0;color:#64736a;font-size:15px;line-height:1.6}.practice-note{margin:24px 0 0;color:#849087;font-size:11px;line-height:1.5}.challenge-list{display:grid;border-top:1px solid #cfd5cf}.challenge-list button{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:21px 3px;border:0;border-bottom:1px solid #cfd5cf;background:none;cursor:pointer;text-align:left;transition:padding .18s ease,background .18s ease}.challenge-list button:hover,.challenge-list button[aria-pressed=true]{padding-inline:14px;background:#e8eee8}.challenge-list button>span{display:flex;align-items:center;gap:17px}.challenge-list i{display:grid;width:34px;height:34px;place-items:center;border:1px solid #b6c6ba;border-radius:50%;color:#4d7669;font-family:DM Mono,monospace;font-size:9px;font-style:normal}.challenge-list strong{color:#31483f;font-family:Fraunces,serif;font-size:clamp(20px,2vw,27px);font-weight:600}.challenge-list em{color:#77857d;font-size:11px;font-style:normal}.boundaries-section{display:grid;grid-template-columns:1fr 1fr;gap:60px;padding:50px 0;border-top:1px solid #cfd3ca;border-bottom:1px solid #cfd3ca;align-items:end}.boundaries-section h2{max-width:590px}.boundaries-section>p{max-width:560px;margin:0 0 4px;color:#68766d;font-size:14px;line-height:1.65}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:42px 0 10px}.site-footer p{margin:0;color:#859087;font-family:DM Mono,monospace;font-size:9px;letter-spacing:.05em;text-transform:uppercase}[data-scroll-reveal]{opacity:.82;transform:translateY(18px);transition:opacity .54s cubic-bezier(.22,1,.36,1),transform .54s cubic-bezier(.22,1,.36,1)}[data-scroll-reveal].is-visible,[data-scroll-reveal]:focus-within,[data-scroll-reveal]:target{opacity:1;transform:none}@media(max-width:960px){.lesson-nav{display:none}.topbar{grid-template-columns:1fr auto}.hero-section{grid-template-columns:1.25fr .75fr;gap:35px;min-height:590px}.anatomy-workspace{grid-template-columns:1fr}.lesson-card{min-height:340px}.lesson-card{scroll-margin-top:12px}.lesson-empty{min-height:250px}.location-kicker{margin-top:15px}.practice-section{gap:45px}}@media(max-width:760px){.topbar{padding-block:15px}.hero-section,.practice-section,.boundaries-section{grid-template-columns:1fr}.hero-section{gap:42px;min-height:auto;padding:66px 0 80px}.hero-actions{align-items:flex-start;flex-direction:column}.section-heading{align-items:flex-start;flex-direction:column;gap:15px}.method-strip ol,.pathway-grid{grid-template-columns:1fr}.method-strip ol{gap:18px}.pathway-grid article{min-height:230px}.pathway-grid article>span{margin-bottom:30px}.practice-section{padding:82px 0}.boundaries-section{gap:24px}.site-footer{align-items:flex-start;flex-direction:column}}@media(max-width:600px),(prefers-reduced-motion:reduce){.entrance-track:not([data-entrance-state=active]){display:none}}@media(max-width:520px){.page-shell{padding-inline:12px}.topbar{padding-inline:14px}.replay-button{font-size:9px}.brand em{display:none}h1{font-size:clamp(43px,14vw,63px)}.lesson-objective{padding:23px}.model-card,.lesson-card,.method-strip{border-radius:18px}.canvas-wrap{min-height:490px}.canvas-hint{font-size:9px}.lesson-card{padding:23px}.pathway-section{margin-inline:0;padding:30px 18px;border-radius:22px}.challenge-list em{display:none}}@media(max-width:360px){.model-toolbar{gap:6px;padding-inline:10px}.model-toolbar-actions{gap:4px}.reset-button{padding-inline:4px;font-size:11px}.expand-button{width:38px;justify-content:center;padding-inline:7px}.expand-button-label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}[data-scroll-reveal]{opacity:1;transform:none}.loading-orbit{animation:none;border-color:#8cb8a8}}
