.learn-v2-shell{display:grid;gap:14px}.learn-v2-hero{position:relative;overflow:hidden;background:linear-gradient(120deg,#fffdf7 0 62%,#e7f7ff);min-height:180px;padding-right:min(28vw,320px)}.learn-v2-hero h1{margin:8px 0 8px;font-size:clamp(28px,3vw,42px)}.learn-v2-hero p{max-width:70ch}.learn-v2-hero .learn-v2-mascot{position:absolute;right:20px;bottom:-26px;width:220px;height:200px;display:grid;place-items:end center}.learn-v2-tabs{display:flex;gap:8px;flex-wrap:wrap}.learn-v2-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.learn-v2-card{border:1px solid #d8e3e8;background:#fff;border-radius:16px;padding:15px;text-align:left;color:#0b1930;cursor:pointer;min-height:168px;display:flex;flex-direction:column;gap:7px;box-shadow:0 6px 18px rgba(20,48,67,.05)}.learn-v2-card:hover,.learn-v2-card:focus-visible{border-color:#177be8;box-shadow:0 10px 24px rgba(23,123,232,.12);outline:none}.learn-v2-card h3{margin:0;font-size:18px}.learn-v2-subject{text-transform:uppercase;letter-spacing:.08em;font-size:10px;font-weight:900;color:#4b718c}.learn-v2-meta{display:flex;gap:6px;flex-wrap:wrap;margin-top:auto}.learn-v2-chip{font-size:10px;border-radius:999px;background:#eef4f7;padding:5px 8px}.learn-v2-chip.live{background:#dff4df;color:#1f6530}.learn-v2-chip.ready{background:#fff1c5;color:#785400}.learn-v2-module{display:grid;gap:16px;overflow:hidden}.learn-v2-top{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}.learn-v2-top h1{margin:6px 0 5px;font-size:clamp(27px,3vw,38px);line-height:1.08}.learn-v2-path{display:flex;gap:5px;flex-wrap:wrap}.learn-v2-step-dot{font-size:10px;padding:4px 7px;border-radius:999px;background:#edf3f6}.learn-v2-step-dot.current{background:#177be8;color:#fff}.learn-v2-progress{display:flex;gap:10px;align-items:center;margin-top:10px}.learn-v2-progress-track{height:7px;width:min(360px,48vw);background:#e5ecef;border-radius:999px;overflow:hidden}.learn-v2-progress-track i{display:block;height:100%;background:#177be8;border-radius:inherit;transition:width .2s ease}.learn-v2-progress>span{font-size:11px;font-weight:800;color:#60727e;white-space:nowrap}.learn-v2-step{min-height:300px;min-width:0}.learn-v2-mental{font-size:clamp(17px,1.6vw,20px);line-height:1.52;background:#fff8dc;border-left:5px solid #ffd24a;padding:16px 18px;border-radius:12px;max-width:74ch}.learn-v2-copy{font-size:17px;line-height:1.65;max-width:76ch}.learn-v2-response{display:grid;gap:9px;margin-top:16px}.learn-v2-response textarea{width:100%;min-height:110px;border:1px solid #cbd9e1;border-radius:12px;padding:12px;font:inherit}.learn-v2-options{display:grid;gap:8px}.learn-v2-option{border:1px solid #c9d8e0;background:#fff;border-radius:12px;padding:11px;text-align:left}.learn-v2-footer{display:flex;gap:8px;justify-content:space-between;align-items:center;flex-wrap:wrap}.learn-v2-boundary{font-size:11px;color:#61717b;background:#f5f8fa;border-radius:10px;padding:7px 9px}.learn-v2-pending{border:1px dashed #d4b75f;background:#fffbeb;border-radius:14px;padding:14px}.learn-v2-framework{font-size:11px;color:#5f6d77}.learn-v2-legacy-note{font-size:12px;color:#6c7780}.learn-v2-interaction{margin-top:8px}
@media(max-width:980px){.learn-v2-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-v2-hero{padding-right:210px}.learn-v2-hero .learn-v2-mascot{width:180px}}
@media(max-width:620px){.learn-v2-grid{grid-template-columns:1fr}.learn-v2-hero{padding-right:20px;padding-bottom:145px}.learn-v2-hero .learn-v2-mascot{width:155px;height:140px}.learn-v2-top{display:grid}.learn-v2-card{min-height:140px}}
.learn-v2-goal{font-size:14px;color:#526474;margin:3px 0 7px;max-width:74ch}.learn-v2-all summary{cursor:pointer;padding:4px 0}.learn-v2-key,.learn-v2-note{margin-top:14px;padding:11px 13px;border-radius:11px;background:#f7fbfd;border:1px solid #d8e4ea}.learn-v2-passage{margin:16px 0;border-left:4px solid #177be8;background:#f8fbfd;padding:14px 16px;border-radius:0 12px 12px 0;font-size:17px;line-height:1.65}.learn-v2-worked{max-width:74ch;display:grid;gap:9px;font-size:16px;line-height:1.55}.learn-v2-prompt{margin-top:16px;border:1px solid #cddde5;border-radius:12px;padding:13px 14px;background:#fff;font-weight:750;line-height:1.5}.learn-v2-option[aria-pressed=true]{background:#dff2ff;border-color:#177be8;box-shadow:inset 0 0 0 1px #177be8}.learn-v2-hints,.learn-v2-expected{margin-top:14px;border:1px solid #d8e4e9;border-radius:12px;padding:10px 12px;background:#fbfdfd}.learn-v2-hints summary,.learn-v2-expected summary{cursor:pointer;font-weight:800}.learn-v2-hints ol{margin-bottom:2px}.learn-v2-audio-boundary{margin-top:14px;border:1px solid #d8b24b;background:#fff7d7;border-radius:12px;padding:12px 14px;line-height:1.5}.learn-v2-interaction{margin-top:16px;margin-bottom:14px}
@media(max-width:620px){.learn-v2-path{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}.learn-v2-step-dot{white-space:nowrap}.learn-v2-footer{align-items:stretch}.learn-v2-footer .learn-v2-boundary{order:3;width:100%}}

/* Learn v0.4.1 renderer fidelity / learner-facing response state */
.learn-v2-choice-feedback{min-height:24px;margin-top:8px;font-size:14px;font-weight:700}.learn-v2-choice-feedback[data-result="correct"]{color:#2f7046}.learn-v2-choice-feedback[data-result="incorrect"]{color:#845e12}.learn-v2-option[data-result="correct"]{outline:2px solid #4b965f;outline-offset:2px}.learn-v2-option[data-result="incorrect"]{outline:2px solid #b18a35;outline-offset:2px}.learn-v2-items{display:grid;gap:9px;margin:14px 0}.learn-v2-item{display:flex;gap:12px;align-items:flex-start;justify-content:space-between;border:1px solid var(--border,#d7e1e7);border-radius:12px;padding:11px 13px;background:rgba(255,255,255,.72)}.learn-v2-item details{flex:0 0 auto}.learn-v2-item summary{cursor:pointer;font-weight:800}.learn-v2-item details b{display:block;margin-top:6px;text-align:right}


/* v4.5.6 Learn experience scenes — reusable child-facing scene grammar */
.learn-scene{display:grid;gap:18px;min-width:0}.learn-scene-head{max-width:760px}.learn-scene-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.12;margin:5px 0 8px;color:#10253a}.learn-scene-head p{font-size:17px;line-height:1.55;margin:0;color:#415766;max-width:68ch}.learn-scene-takeaway{display:flex;gap:12px;align-items:flex-start;border:1px solid #d8e4e8;background:#f6fafb;border-radius:14px;padding:13px 15px;max-width:820px}.learn-scene-takeaway span{flex:0 0 auto;text-transform:uppercase;letter-spacing:.08em;font-size:10px;font-weight:900;color:#177be8}.learn-scene-takeaway b{font-size:15px;line-height:1.45;color:#173146}.learn-scene-feedback{min-height:48px;display:flex;align-items:center;border:1px solid #d8e4e8;background:#f8fbfc;border-radius:12px;padding:11px 13px;font-size:14px;line-height:1.45}.learn-scene-feedback[data-tone="good"]{background:#e8f5ea;border-color:#9dc8a7;color:#245c34}.learn-scene-feedback[data-tone="try"]{background:#fff7db;border-color:#d8bd70;color:#765b16}
.learn-program-puzzle{display:grid;grid-template-columns:minmax(230px,.72fr) minmax(320px,1.28fr);gap:18px;align-items:stretch}.learn-program-stack{display:grid;align-content:start;gap:9px;border:1px solid #d7e1e6;border-radius:17px;background:#fbfdfd;padding:14px}.learn-program-start{display:flex;justify-content:space-between;gap:8px;align-items:center;padding:8px 10px;border-radius:10px;background:#eef5f8;font-size:12px}.learn-program-start span{font-size:9px;letter-spacing:.1em;font-weight:950;color:#597284}.learn-code-card{display:grid;grid-template-columns:32px 1fr;gap:8px;align-items:center;border:2px solid #19324a;border-radius:12px;background:#fff;padding:11px 12px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.learn-code-card span{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:#e7f3fb;color:#0d6cb9;font:800 12px system-ui}.learn-predict-board{display:grid;grid-template-columns:repeat(5,1fr);aspect-ratio:1/1;max-height:420px;border:2px solid #19324a;border-radius:16px;overflow:hidden;background:#fff}.learn-predict-board button{position:relative;border:0;border-right:1px solid #dfe8ec;border-bottom:1px solid #dfe8ec;background:#fff;color:#7a8b96;cursor:pointer;min-width:0}.learn-predict-board button:nth-child(5n){border-right:0}.learn-predict-board button span{position:absolute;left:5px;top:4px;font-size:9px}.learn-predict-board button i{position:absolute;inset:20%;display:grid;place-items:center;background:#ffe7a0;border:2px solid #19324a;border-radius:999px;color:#19324a;font:900 9px system-ui}.learn-predict-board button[aria-pressed="true"]{background:#dff2ff;box-shadow:inset 0 0 0 3px #177be8}.learn-predict-controls{display:flex;justify-content:space-between;gap:16px;align-items:end;flex-wrap:wrap}.learn-direction-row{display:flex;gap:7px;flex-wrap:wrap;margin-top:7px}.learn-direction-row button,.learn-scene-options button,.learn-code-choice button{border:1px solid #cbd9e0;background:#fff;border-radius:11px;padding:10px 12px;font-weight:800;color:#173146;cursor:pointer}.learn-direction-row button[aria-pressed="true"],.learn-scene-options button[aria-pressed="true"],.learn-code-choice button[aria-pressed="true"]{background:#dff2ff;border-color:#177be8;box-shadow:inset 0 0 0 1px #177be8}
.learn-state-flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:10px;align-items:center;max-width:900px}.learn-state-node,.learn-instruction-node{border:2px solid #19324a;border-radius:14px;background:#fff;padding:16px;text-align:center;display:grid;gap:6px}.learn-state-node span,.learn-instruction-node span{text-transform:uppercase;letter-spacing:.08em;font-size:9px;font-weight:900;color:#6b7d88}.learn-state-node b,.learn-instruction-node b{font-size:18px}.learn-instruction-node{background:#fff4c8}.learn-state-node.changed{background:#e7f4fb}.learn-state-arrow{font-size:28px;font-weight:900;color:#177be8}.learn-state-examples{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.learn-state-examples span{font-size:13px;color:#60727d}.learn-state-examples b{border-radius:999px;background:#edf3f6;padding:7px 10px;font-size:12px}.learn-step-cue{display:flex;gap:13px;align-items:center;border:1px solid #cfe2ed;background:#eef8fd;border-radius:14px;padding:12px 14px;max-width:760px}.learn-step-key{font:900 13px ui-monospace,monospace;letter-spacing:.06em;background:#177be8;color:#fff;padding:8px 11px;border-radius:9px}
.learn-concept-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.learn-concept-grid article{border:1px solid #d8e3e8;border-radius:16px;background:#fff;padding:16px;min-height:150px}.learn-concept-grid h3{margin:9px 0 5px;font-size:20px}.learn-concept-grid p{margin:0;color:#536873;line-height:1.45}.learn-concept-icon{height:42px;display:flex;align-items:center;font:900 18px ui-monospace,monospace;color:#0d6cb9}.learn-loop-code{display:inline-flex;gap:8px;align-items:center;border:2px solid #19324a;background:#fff4c8;border-radius:13px;padding:12px 15px;width:max-content;font:800 16px ui-monospace,monospace}.learn-loop-unroll{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.learn-loop-value{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;border:2px solid #19324a;background:#fff;font-size:22px;font-weight:900}.learn-loop-value.final{background:#ddf3e3;border-color:#398050}.learn-loop-op{display:grid;place-items:center;gap:2px}.learn-loop-op span{font:900 17px ui-monospace,monospace;color:#177be8}.learn-loop-op small{font-size:9px;color:#75848d}
.learn-debug-columns{display:grid;grid-template-columns:1fr 1fr;gap:14px}.learn-debug-columns section{border:1px solid #d7e2e7;border-radius:16px;background:#fff;padding:14px}.learn-debug-columns h3{margin:0 0 10px}.learn-trace-rows{display:grid;gap:7px}.learn-trace-rows>div{display:grid;grid-template-columns:28px 1fr auto;gap:8px;align-items:center;border-radius:10px;padding:9px 10px;background:#f7fafb}.learn-trace-rows>div>span{width:25px;height:25px;display:grid;place-items:center;border-radius:50%;background:#e6eef2;font-size:11px;font-weight:900}.learn-trace-rows>div.split{background:#fff0cb;outline:2px solid #d19915}.learn-trace-rows em{font-size:9px;text-transform:uppercase;letter-spacing:.06em;font-style:normal;font-weight:900;color:#8a6300}.learn-debug-split{display:flex;gap:10px;align-items:center;width:max-content;max-width:100%;background:#fff0cb;border:1px solid #d6ad48;border-radius:12px;padding:10px 13px}.learn-debug-split b{color:#745100}.learn-contrast-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center}.learn-contrast-grid article{border:1px solid #d8e3e8;border-radius:16px;padding:16px;background:#fff}.learn-contrast-grid article.warn{background:#fff8df}.learn-contrast-grid article.good{background:#edf8ef}.learn-contrast-grid h3{margin:0 0 9px}.learn-contrast-grid p{margin:7px 0}.learn-vs{font-weight:950;color:#7a8991}
.learn-code-choice{display:grid;gap:8px;max-width:620px}.learn-code-choice button{display:grid;grid-template-columns:32px 1fr;align-items:center;text-align:left;font-family:ui-monospace,monospace}.learn-code-choice button>span{width:25px;height:25px;border-radius:50%;display:grid;place-items:center;background:#edf3f6;font:800 11px system-ui}.learn-counter-visual{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.learn-counter-visual span{border:1px solid #cbd8df;border-radius:10px;padding:10px 12px;font:800 16px ui-monospace,monospace;background:#fff}.learn-counter-visual .start{background:#edf3f6}.learn-counter-visual .finish{background:#fff3bf;border-color:#d0a931;min-width:50px;text-align:center}.learn-answer-row{display:flex;gap:10px;align-items:end;flex-wrap:wrap}.learn-answer-row label{display:grid;gap:5px}.learn-answer-row input{width:140px;border:1px solid #c8d7df;border-radius:10px;padding:10px;font:inherit}.learn-scene-options{display:grid;gap:8px;max-width:720px}.learn-scene-options button{text-align:left}.learn-move-strip{display:flex;gap:7px;align-items:center;flex-wrap:wrap}.learn-move-strip span{border:2px solid #19324a;border-radius:10px;padding:9px 11px;font:800 13px ui-monospace,monospace;background:#fff}.learn-move-strip b{color:#177be8}.learn-compress-arrow{font-weight:800;color:#60727e}.learn-same-code{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:center;max-width:820px}.learn-same-code section{display:grid;gap:7px;border:1px solid #d7e1e6;border-radius:15px;background:#fff;padding:14px}.learn-same-code section>span{font-size:10px;text-transform:uppercase;letter-spacing:.08em;font-weight:900;color:#72828c}.learn-same-code section b{border:1px solid #d9e3e7;border-radius:9px;background:#f8fbfc;padding:8px 10px;font:800 13px ui-monospace,monospace}.learn-equals{font-size:28px;color:#177be8}.learn-thinking-box{display:grid;gap:8px;max-width:820px}.learn-thinking-box textarea{min-height:95px;border:1px solid #cbd9e1;border-radius:12px;padding:12px;font:inherit}
@media(max-width:760px){.learn-program-puzzle,.learn-debug-columns{grid-template-columns:1fr}.learn-predict-board{max-width:520px;width:100%;justify-self:center}.learn-state-flow{grid-template-columns:1fr}.learn-state-arrow{transform:rotate(90deg);justify-self:center}.learn-concept-grid{grid-template-columns:1fr}.learn-contrast-grid{grid-template-columns:1fr}.learn-vs{justify-self:center}.learn-same-code{grid-template-columns:1fr}.learn-equals{justify-self:center;transform:rotate(90deg)}}
@media(max-width:620px){.learn-v2-progress{align-items:flex-start;flex-direction:column;gap:6px}.learn-v2-progress-track{width:100%}.learn-scene-head h2{font-size:26px}.learn-scene-head p{font-size:16px}.learn-program-puzzle{gap:12px}.learn-predict-controls{align-items:stretch}.learn-predict-controls>.btn{width:100%}.learn-loop-value{width:54px;height:54px}.learn-v2-top h1{font-size:29px}}


/* v4.5.7 Learn consistency pass: one companion rail on every Learn scene */
.learn-v2-stage-layout{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:16px;align-items:stretch;min-width:0}
.learn-v2-stage-layout>.learn-v2-step{min-width:0}
.learn-companion-panel{height:360px;align-self:start;position:sticky;top:12px;border:1px solid #d7e2e7;border-radius:18px;background:linear-gradient(180deg,#eaf7ff,#f8fbfd);display:grid;grid-template-rows:1fr 108px;gap:8px;padding:12px;overflow:hidden;isolation:isolate}
.learn-companion-character{height:220px;width:100%;display:grid;place-items:end center;min-width:0}
.learn-companion-panel .sq-ih-character svg{max-width:100%;max-height:100%}
.learn-companion-bubble,.learn-companion-panel .sq-ih-bubble{height:104px;max-height:104px;width:100%;box-sizing:border-box;overflow:hidden!important;scrollbar-width:none;border:1.5px solid #19324a;border-radius:16px;background:#fff;padding:11px 12px;font-size:13px;line-height:1.35;text-align:center;display:grid;place-items:center;align-content:center;color:#284255}
.learn-companion-panel[data-companion-state="retry"] .learn-companion-bubble{background:#fff7db}
.learn-companion-panel[data-companion-state="discovery"] .learn-companion-bubble,.learn-companion-panel[data-companion-state="success"] .learn-companion-bubble{background:#e8f5ea}
.learn-debug-problem{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:stretch;max-width:820px}
.learn-debug-problem article{display:grid;gap:7px;border:1px solid #d7e2e7;border-radius:16px;padding:16px;background:#fff}
.learn-debug-problem article>span{font-size:10px;letter-spacing:.08em;font-weight:900;color:#6e818d}
.learn-debug-problem article.goal{background:#edf8ef}.learn-debug-problem article.actual{background:#fff7db}.learn-debug-arrow{display:grid;place-items:center;font-size:28px;color:#177be8;font-weight:900}
.learn-program-stack.compact{max-width:620px}
.learn-debug-reveal{display:grid;gap:12px;margin-top:6px;padding-top:14px;border-top:1px solid #d7e2e7}
.learn-debug-reveal[hidden]{display:none!important}
@media(max-width:940px){.learn-v2-stage-layout{grid-template-columns:1fr}.learn-companion-panel{position:relative;top:auto;height:132px;grid-template-columns:100px minmax(0,1fr);grid-template-rows:1fr;align-items:center}.learn-companion-character{height:108px}.learn-companion-bubble,.learn-companion-panel .sq-ih-bubble{height:94px;max-height:94px}}
@media(max-width:620px){.learn-debug-problem{grid-template-columns:1fr}.learn-debug-arrow{transform:rotate(90deg)}.learn-companion-panel{height:126px;grid-template-columns:88px minmax(0,1fr);padding:9px}.learn-companion-character{height:102px}.learn-companion-bubble,.learn-companion-panel .sq-ih-bubble{height:90px;max-height:90px;font-size:12.5px;padding:9px 10px}}

/* v4.5.8 Learn run reset, year routing and geography scene grammar */
.learn-v2-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}.learn-year-card{display:flex;justify-content:space-between;gap:22px;align-items:center}.learn-year-switch{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}.learn-year-switch button{border:1px solid #cbd9df;border-radius:999px;background:#fff;padding:8px 11px;font:800 12px system-ui;color:#173146;cursor:pointer}.learn-year-switch button.active{background:#173146;color:#fff;border-color:#173146}.learn-v2-empty{margin-top:14px;border:1px dashed #cbd9df;border-radius:14px;padding:18px;color:#5b6d78;background:#fbfdfd}
.learn-map-triptych{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.learn-map-card{border:1px solid #d5e0e5;border-radius:15px;background:#fff;overflow:hidden}.learn-map-card>div:first-child{aspect-ratio:1.35/1;background:#eef3e6}.learn-map-card svg{width:100%;height:100%;display:block}.learn-map-card footer{padding:10px 11px}.learn-map-card footer b{display:block;font-size:14px}.learn-map-card footer span{display:block;font-size:11px;color:#657984;margin-top:3px}.learn-map-compare-note{border-radius:14px;background:#eff8f3;border:1px solid #cde3d4;padding:12px 14px;font-weight:750;line-height:1.45}.learn-map-purpose-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.learn-map-purpose-grid article{border:1px solid #d5e0e5;border-radius:14px;background:#fff;padding:13px}.learn-map-purpose-grid article strong{display:block;font-size:15px}.learn-map-purpose-grid article p{margin:5px 0 0;font-size:12px;color:#60727e}.learn-route-scene{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(220px,.75fr);gap:14px;align-items:stretch}.learn-route-map{border:2px solid #173146;border-radius:16px;overflow:hidden;background:#f7f2df}.learn-route-map svg{width:100%;height:100%;display:block;min-height:290px}.learn-route-explain{display:grid;gap:9px;align-content:start}.learn-route-explain article{border:1px solid #d5e0e5;border-radius:12px;background:#fff;padding:11px}.learn-route-explain article b{display:block}.learn-route-explain article span{display:block;color:#60727e;font-size:12px;margin-top:3px}.learn-structured-choice-note{margin-top:10px;font-size:12px;color:#60727e}.learn-layer-answer-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:12px}.learn-layer-answer-strip span{border:1px solid #cfe0d5;border-radius:10px;background:#f1faf4;padding:9px;text-align:center;font-size:11px;font-weight:850}
@media(max-width:800px){.learn-year-card{display:block}.learn-year-switch{justify-content:flex-start;margin-top:12px}.learn-map-triptych,.learn-map-purpose-grid{grid-template-columns:1fr}.learn-route-scene{grid-template-columns:1fr}.learn-route-map svg{min-height:230px}.learn-layer-answer-strip{grid-template-columns:repeat(2,1fr)}}
/* v4.5.9 geography flagship quality pass */
.learn-map-card{box-shadow:0 8px 24px rgba(24,49,70,.07)}.learn-map-card>div:first-child{aspect-ratio:1.37/1}.learn-map-card footer{border-top:1px solid #e0e7e3}.learn-map-compare-note b{color:#173146}
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.learn-map-design-options{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.learn-map-design-options>button{appearance:none;border:1px solid #d5e0e5;border-radius:14px;background:#fff;padding:0;overflow:hidden;text-align:left;color:#173146;cursor:pointer}.learn-map-design-options>button[aria-pressed="true"]{outline:3px solid #e0ae32;border-color:#bc8c15}.learn-map-design-thumb{background:#f4f0df;border-bottom:1px solid #dce5e2}.learn-map-design-thumb svg{display:block;width:100%;height:auto}.learn-map-design-options>button>b,.learn-map-design-options>button>span{display:block;padding-left:11px;padding-right:11px}.learn-map-design-options>button>b{padding-top:10px;font-size:14px}.learn-map-design-options>button>span{padding-top:4px;padding-bottom:11px;color:#60727e;font-size:11px;line-height:1.4}
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/* v4.5.9 learner-review rule: open reasoning should not become a mandatory textarea by default. */
.learn-v2-think-ready label{display:flex;align-items:center;gap:9px;border:1px solid #d5e0e5;border-radius:12px;background:#f8fbfc;padding:10px 12px;font-weight:700;color:#405866}.learn-v2-think-ready input{width:18px;height:18px;flex:0 0 auto}

/* v4.5.11 flagship Learn wave: fractions, inference and circuits */
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.learn-circuit-pair{max-width:980px}.learn-circuit-pair,.learn-circuit-near-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.learn-circuit-pair article,.learn-circuit-near-grid article{display:grid;gap:8px;border:1px solid #d7e2e7;border-radius:16px;padding:13px;background:#fbfdfd}.learn-circuit-svg{width:100%;height:auto;display:block}.learn-circuit-trace{max-width:650px}.learn-circuit-trace-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.learn-circuit-trace-controls>span{font-weight:800;color:#536975}.learn-circuit-trace .trace-segment{opacity:.17;transition:opacity .2s ease,filter .2s ease}.learn-circuit-trace[data-circuit-trace-stage="1"] .trace-1,.learn-circuit-trace[data-circuit-trace-stage="2"] .trace-1,.learn-circuit-trace[data-circuit-trace-stage="2"] .trace-2,.learn-circuit-trace[data-circuit-trace-stage="3"] .trace-segment{opacity:1;filter:drop-shadow(0 0 4px #ffd95e)}.learn-contact-diagram{height:230px;max-width:760px;border:1px solid #d7e2e7;border-radius:18px;background:#fbfdfd;position:relative;overflow:hidden}.learn-contact-lamp{position:absolute;right:150px;top:52px;width:120px;height:120px;border-radius:50%;border:16px solid #d9e0e3;background:#fff;display:grid;place-items:center}.learn-contact-lamp .plastic{position:absolute;top:-35px;font-size:10px;font-weight:900}.learn-contact-lamp .metal{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:#c8b77c;border:3px solid #263f4a;font-size:9px;text-align:center;font-weight:900}.learn-contact-wire{position:absolute;left:70px;height:8px;background:#263f4a;border-radius:8px;font-size:11px;font-weight:900;padding-top:12px}.learn-contact-wire.wrong{top:83px;width:350px;color:#a23f34}.learn-contact-wire.right{top:145px;width:400px;color:#2f7046}.learn-circuit-near-grid article{text-align:center}.wire-near,.wire-joined{height:90px;display:flex;align-items:center;justify-content:center;gap:10px}.wire-near i,.wire-joined i{width:42%;height:8px;background:#263f4a;border-radius:8px}.wire-joined{gap:0}.learn-circuit-repair-map,.learn-circuit-single{max-width:620px}.learn-circuit-design-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.learn-circuit-design-options button{border:1px solid #cbd9e0;background:#fff;border-radius:14px;padding:10px;text-align:left;display:grid;gap:6px;color:#173146;cursor:pointer}.learn-circuit-design-options button[aria-pressed="true"]{background:#dff2ff;border-color:#177be8;box-shadow:inset 0 0 0 1px #177be8}.learn-circuit-design-options span{font-size:12px;line-height:1.4;color:#60727e}
@media(max-width:800px){.learn-frac-ribbon-pair,.learn-frac-visual-options,.learn-frac-compare-board,.learn-circuit-pair,.learn-circuit-near-grid,.learn-inference-pair-grid{grid-template-columns:1fr}.learn-frac-equation,.learn-frac-same-grid,.learn-frac-trap-grid{grid-template-columns:1fr}.learn-frac-times,.learn-frac-equals,.learn-frac-arrow-down{text-align:center;transform:rotate(90deg)}.learn-bridge-model{grid-template-columns:1fr}.learn-bridge-span i:after{content:'↓';left:50%;right:auto;top:-10px}.learn-inference-chain{grid-template-columns:1fr}.learn-inference-chain>div{text-align:center;transform:rotate(90deg)}.learn-circuit-design-options{grid-template-columns:1fr 1fr}.learn-inference-classify-list article{grid-template-columns:1fr}.learn-inference-classify-list article>div{flex-wrap:wrap}}
@media(max-width:520px){.learn-evidence-picks,.learn-circuit-design-options{grid-template-columns:1fr}.learn-frac-choice-line{margin-left:15px;margin-right:15px}.learn-frac-ribbon>div{height:68px}}

/* Clip decoration without creating a scroll ancestor that disables the companion's sticky rail. */
.card.learn-v2-module{overflow:clip!important}
.learn-companion-panel{max-height:calc(100dvh - 24px)}
@media(min-width:941px) and (max-height:460px){.learn-companion-panel{height:calc(100dvh - 24px);grid-template-rows:minmax(0,1fr) 108px}.learn-companion-character{height:100%;min-height:0}.learn-companion-character img{max-height:100%}}
.learn-v2-module{grid-template-columns:minmax(0,1fr)}
.learn-v2-top{min-width:0;flex-wrap:wrap}
.learn-v2-footer{display:grid;grid-template-columns:minmax(0,1fr) auto;min-width:0;width:100%;gap:10px 14px}
.learn-v2-footer>*{min-width:0;overflow-wrap:anywhere}
.learn-v2-footer>.learn-v2-boundary{grid-column:1/-1;grid-row:2;text-align:center}
.learn-next-hint{grid-column:1/-1;grid-row:3;font-size:14px;line-height:1.5;color:#415d6d}
#learnPrev{grid-column:1;grid-row:1;justify-self:start}#learnNext{grid-column:2;grid-row:1}

.learn-alternative-attempt{display:block;margin:12px 0;line-height:1.5}
.learn-map-labels text{paint-order:stroke;stroke:#fffdf7;stroke-width:3px;stroke-linejoin:round}

.learn-explanation-feedback p{margin:8px 0}.learn-spelling-notes{margin:12px 0;padding:10px 12px;background:#fff;border:1px solid #d7e2e7;border-radius:10px;color:#415766}.learn-spelling-notes p{margin:5px 0}