/* Original Logic Garden studio layer: quiet ink, iris and actual puzzle geometry. */
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:root[data-theme=dark]{--bg:#14151f;--surface:#1e2030;--surface-2:#292b3c;--ink:#f1f0fa;--ink-2:#b6b8ce;--line:#34364c;--line-2:#646980;--grid-thick:#a4a9c3;--primary:#bcb1ff;--primary-strong:#d4ccff;--primary-soft:#35304f;--primary-ink:#211b3c;--given-bg:#232536;--sel:#494064;--peer:#2d2c40;--same:#3f385a;--area:#34304c;--target-bg:#564579;--coral:#efb58e;--coral-soft:#49372f;--focus:#c4b8ff;--sage:#29283e;--sage-2:#393650}
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@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .studio .game-card.sudoku{--game-accent:#c0b5ff;--game-soft:#37304e}:root:not([data-theme=light]) .studio .game-card.mosaic{--game-accent:#f2c28a;--game-soft:#483b2e}:root:not([data-theme=light]) .studio .game-card.balance{--game-accent:#9bdad0;--game-soft:#293f40}}
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.studio .play,.studio .logic-play{max-width:846px;margin-inline:auto}.studio .task-heading{max-width:846px;margin-inline:auto}
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@media(prefers-reduced-motion:reduce){.studio *, .studio *::before,.studio *::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}:root[data-motion=off] .studio *{scroll-behavior:auto!important;transition:none!important;animation:none!important}

/* Value task: explicit lesson entry, evidence and exact-scene replay. */
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@media(max-width:899px){.studio .hero.value-hero{grid-template-columns:1fr;gap:18px}.value-demo{grid-column:1;grid-row:auto;max-width:none}.value-demo[data-state=closed]{padding:20px}.value-demo[data-state=closed] h2{font-size:1rem}.value-demo[data-state=closed] .value-steps{margin-bottom:0}.value-demo[data-state=closed]>.value-boundary{border:0;padding:0;margin-top:12px}.value-live{grid-template-columns:1fr;gap:14px}.value-live-actions{flex-direction:row;flex-wrap:wrap}.value-live-actions .btn{flex:1 1 150px}}
@media(max-width:759px){.studio .hero.value-hero{padding:9px 0 18px;gap:12px}.studio .value-hero .display{font-size:1.85rem}.studio .value-hero .lede{font-size:.8rem}.studio .hero-actions.value-actions{margin:14px 0 8px;gap:7px 14px}.value-start{font-size:.8rem;min-height:46px;padding:10px 15px}.value-review-link{font-size:.73rem}.value-demo{padding:17px;border-radius:16px}.studio .value-demo h2{font-size:1rem}.value-demo>p{font-size:.76rem}.value-steps{margin:12px 0}.value-steps li{font-size:.65rem}.value-live{padding:16px;margin-bottom:22px}.studio .value-live h2{font-size:.93rem}.value-live p{font-size:.74rem}.value-live .value-apply-note{font-size:.66rem}.studio .value-trail.studio-daily-status{padding:8px 0;border:0;background:none}.value-demo .example-text p{overflow-wrap:anywhere}}
@media(max-width:359px){.studio .value-hero .display{font-size:1.65rem}.value-demo{padding:14px}.value-demo-actions .btn{font-size:.72rem}.value-live-actions .btn{flex-basis:100%}}

.studio .value-demo h2{scroll-margin-top:80px}

/* Two validated singles techniques; one finite course, separate learning records. */
.course-progress{font-size:.76rem;color:var(--primary);font-weight:650;margin:8px 0}.course-entry-note{font-size:.73rem;color:var(--ink-2);line-height:1.7;max-width:56ch}.course-section{border:1px solid var(--line-2);background:var(--surface);border-radius:20px;padding:26px;margin:0 0 26px;scroll-margin-top:80px}.course-section[hidden]{display:none}.studio .course-header h2{font-size:1.4rem;margin:7px 0 16px}.course-header .kicker{font-size:.74rem;color:var(--primary)}.course-skills{display:flex;gap:10px;flex-wrap:wrap}.course-skills .btn{flex:1 1 200px;min-height:48px;white-space:normal;font-size:.82rem}.course-skills [aria-pressed=true]{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}.course-steps{max-width:660px}.course-storage{font-size:.72rem;color:var(--ink-2);margin:14px 0}.course-storage[role=alert]{color:var(--coral)}.studio .course-section [data-testid=course-question]{font-size:1.1rem;margin:14px 0;scroll-margin-top:80px;line-height:1.6}.course-workspace{display:grid;grid-template-columns:minmax(260px,380px) minmax(0,1fr);gap:26px;align-items:start}.course-board{margin:0;min-width:0}.course-board figcaption{font-size:.7rem;color:var(--ink-2);margin-bottom:10px;line-height:1.7}.course-board .mboard{width:100%;max-width:380px;box-shadow:none}.course-board .legend{font-size:.68rem;line-height:1.6;margin-top:12px;flex-wrap:wrap}.course-task{min-width:0}.course-task>p{font-size:.83rem;line-height:1.75;margin:0 0 14px}.course-answers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:14px 0}.course-answers .answer-btn{min-width:0;min-height:48px;border:1px solid var(--line-2);border-radius:10px;background:var(--surface-2);color:var(--ink);font-size:1.15rem}.course-answers .answer-btn:disabled{opacity:.6}.course-feedback:not(:empty){background:var(--primary-soft);padding:15px;border:1px solid var(--line);border-radius:12px;margin:14px 0;font-size:.8rem;line-height:1.75}.course-evidence{margin-top:10px}.course-evidence summary{min-height:44px;display:flex;align-items:center;color:var(--primary);cursor:pointer}.course-actions{display:flex;flex-wrap:wrap;gap:9px;margin:14px 0}.course-actions .btn,.course-task>.btn{min-height:44px;white-space:normal;font-size:.79rem}.course-actions .btn{flex:1 1 170px}.course-source{display:inline-flex;min-height:44px;align-items:center;font-size:.78rem;margin-top:8px}.course-results{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}.course-results h3{font-size:1rem}.course-results ul{list-style:none;padding:0;margin:12px 0}.course-results li{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px;border-bottom:1px solid var(--line);padding:12px 0;font-size:.8rem;line-height:1.65}.course-results li strong{color:var(--primary);font-weight:600}.course-results>p{font-size:.72rem;line-height:1.75}.course-results>a{display:inline-flex;align-items:center;min-height:44px;font-size:.8rem}.course-entry{white-space:normal}
@media(max-width:759px){.course-section{padding:17px;border-radius:16px}.studio .course-header h2{font-size:1.15rem}.course-skills{gap:7px}.course-skills .btn{flex-basis:125px;font-size:.72rem;padding:8px}.course-workspace{grid-template-columns:1fr;gap:16px}.course-board{max-width:320px;width:100%;margin-inline:auto}.course-board .mboard{max-width:320px}.course-entry-note{font-size:.7rem}.course-progress{font-size:.7rem}.course-task>p{font-size:.78rem}.course-answers{grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}.course-answers .answer-btn{min-height:44px;font-size:1.05rem}.course-results li{grid-template-columns:1fr;gap:4px}.course-feedback:not(:empty){font-size:.76rem;padding:12px}.studio .course-section [data-testid=course-question]{font-size:.96rem}.course-section .value-steps li{font-size:.65rem}}
@media(max-width:359px){.course-section{padding:13px}.course-skills .btn{flex-basis:110px;font-size:.68rem}.course-entry{font-size:.76rem}.course-answers{gap:5px}.course-actions .btn{flex-basis:100%}}
/* Ongoing learning: same quiet studio vocabulary, explicit source provenance. */
.practice-overview{grid-column:2;grid-row:1;align-self:center;padding:25px;border:1px solid var(--line);border-radius:22px;background:var(--surface);min-width:0}.practice-overview .kicker{margin:0 0 16px}.practice-overview p{line-height:1.65}.practice-metrics{display:flex;flex-wrap:wrap;gap:10px 20px;color:var(--primary);font-size:1.18rem}.practice-overview .small{font-size:.75rem}.practice-legacy{margin-top:14px;font-size:.74rem;color:var(--ink-2);max-width:100%}.practice-legacy>summary{min-height:44px;cursor:pointer;display:list-item;padding:12px 0}.practice-legacy>.btn,.practice-legacy>.value-review-link{display:inline-flex;margin:4px 10px 6px 0}.practice-legacy>.value-demo{display:block;max-width:420px;margin-top:15px;grid-column:auto;grid-row:auto}.practice-section{padding:28px;border:1px solid var(--line);border-radius:22px;background:var(--surface);margin:0 0 26px;scroll-margin-top:85px}.practice-section[hidden]{display:none}.practice-section h2{margin:5px 0 18px;font-size:1.45rem;scroll-margin-top:85px}.practice-section .kicker{color:var(--primary);font-size:.72rem}.practice-nav,.practice-controls{display:flex;flex-wrap:wrap;gap:9px;margin:12px 0}.practice-nav .btn[aria-pressed=true]{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}.practice-storage{font-size:.72rem;color:var(--ink-2);margin:12px 0}.practice-workspace{display:grid;grid-template-columns:minmax(0,350px) minmax(0,1fr);gap:30px;margin:24px 0}.practice-workspace figure{margin:0;min-width:0}.practice-workspace figcaption{font-size:.72rem;color:var(--ink-2);margin-bottom:12px;line-height:1.7}.practice-workspace .mboard{width:100%;max-width:350px}.practice-task{min-width:0}.practice-task h3{font-size:1.15rem;margin:14px 0}.practice-badge{display:inline-block;background:var(--primary-soft);border-radius:7px;padding:5px 9px;font-size:.72rem;color:var(--primary);margin:0}.practice-feedback{line-height:1.8;font-size:.85rem;margin:18px 0}.practice-feedback strong{color:var(--primary)}.practice-feedback details>summary{cursor:pointer;min-height:44px;padding:8px 0}.practice-feedback .reason{background:var(--primary-soft);border-radius:12px;padding:12px 15px}.practice-task>.small{font-size:.73rem;line-height:1.7}.practice-due-label{font-size:.76rem;color:var(--primary);font-weight:650}.practice-policy{border-top:1px solid var(--line);margin-top:22px;padding-top:12px;color:var(--ink-2);font-size:.73rem;line-height:1.8}.practice-policy>summary{cursor:pointer;min-height:44px}.practice-archive-list{list-style:none;padding:0;margin:20px 0;display:grid;gap:14px}.practice-archive-list>li{border:1px solid var(--line);border-radius:14px;padding:18px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:12px}.practice-archive-list>li>.btn{grid-column:1/-1;justify-self:start}.practice-archive-list p{margin:7px 0;line-height:1.7;overflow-wrap:anywhere}.practice-attempts>div+div{margin-top:13px;border-top:1px solid var(--line);padding-top:10px}.practice-section .btn{white-space:normal;line-height:1.6;max-width:100%}.practice-section .small{font-size:.74rem}.practice-section .notice{overflow-wrap:anywhere}
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/* New-original learning path: candidate notes are distinct from placed digits. */
.path-candidates{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-content:center;gap:1px 3px;width:100%;max-width:31px;padding:3px;font-size:clamp(.52rem,1.25vw,.73rem);line-height:1.2;font-weight:650;color:var(--primary);text-align:center;position:relative;z-index:1}.path-pair{box-shadow:inset 0 0 0 2px var(--coral);background:var(--coral-soft)!important}.path-pair .path-candidates{color:var(--coral)}.path-removed{text-decoration:line-through;text-decoration-thickness:2px;opacity:.6}.path-candidate-change{font-weight:700;color:var(--primary);padding:10px 0}.practice-previous-overview{padding:12px 0;border-top:1px solid var(--line);margin-top:12px}.practice-previous-overview .practice-metrics{font-size:.85rem}.practice-previous-overview p{line-height:1.7}.practice-legacy .practice-legacy{padding-left:10px;border-left:1px solid var(--line)}
@media(max-width:650px){.path-candidates{font-size:.58rem;max-width:26px;padding:2px;gap:0 2px}.practice-section .practice-task>.small{font-size:.73rem}.practice-section .practice-nav{gap:7px}.practice-section .practice-nav .btn{flex-basis:110px}.practice-legacy .practice-legacy{padding-left:6px}}