:root{--primitive-ink:oklch(22% .02 265);--primitive-ink-muted:oklch(48% .02 265);--primitive-ink-soft:oklch(62% .015 265);--primitive-paper:#f6f5f1;--primitive-surface:oklch(100% 0 0);--primitive-surface-raised:oklch(97.5% .005 265);--primitive-action:oklch(52% .14 245);--primitive-action-tint:oklch(52% .14 245/.12);--primitive-link:oklch(46% .14 245);--primitive-border:oklch(86% .01 265);--primitive-focus:oklch(52% .14 245);--primitive-danger:oklch(52% .18 25);--primitive-danger-bg:oklch(52% .18 25/.1);--primitive-success:oklch(48% .12 145);--primitive-success-bg:oklch(90% .11 145);--color-state-locked:var(--primitive-ink-muted);--color-state-locked-bg:oklch(95% .008 265);--color-state-learning:oklch(43% .1 75);--color-state-learning-bg:oklch(93.5% .07 98);--color-state-practiced:oklch(48% .12 145);--color-state-practiced-bg:oklch(90% .11 145);--color-state-mastered:oklch(48% .12 145);--color-state-mastered-bg:oklch(90% .11 145);--color-bg:var(--primitive-paper);--color-surface:var(--primitive-surface);--color-surface-raised:var(--primitive-surface-raised);--color-text:var(--primitive-ink);--color-text-muted:var(--primitive-ink-muted);--color-text-soft:var(--primitive-ink-soft);--color-action:var(--primitive-action);--color-action-text:oklch(99% 0 0);--color-action-tint:var(--primitive-action-tint);--color-link:var(--primitive-link);--color-border:var(--primitive-border);--color-border-subtle:oklch(90% .008 265);--color-danger:var(--primitive-danger);--color-danger-bg:var(--primitive-danger-bg);--color-success:var(--primitive-success);--color-success-bg:var(--primitive-success-bg);--node-yellow:oklch(93.5% .07 98);--node-yellow-border:oklch(72% .04 80);--node-green:oklch(90% .11 145);--node-green-border:oklch(58% .12 145);--node-muted:oklch(95% .008 265);--node-muted-border:oklch(82% .01 265);--review:oklch(62% .16 35);--line:oklch(68% .02 265);--ease:cubic-bezier(.2, 0, 0, 1);--shadow-sm:0 1px 2px oklch(20% .02 265/.06);--shadow-panel:0 12px 40px oklch(20% .02 265/.12);--radius-pill:999px;--focus-ring:var(--primitive-focus);--focus-ring-width:2px;--focus-ring-offset:2px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--space-8:64px;--font-display:"Sora", "Segoe UI", sans-serif;--font-body:"IBM Plex Sans", "Segoe UI", sans-serif;--font-mono:"IBM Plex Mono", ui-monospace, monospace;--text-xs:.75rem;--text-sm:.875rem;--text-md:.95rem;--text-lg:1.125rem;--text-xl:1.5rem;--text-2xl:2rem;--line-tight:1.25;--line-normal:1.55;--target-min:24px;--control-height:44px;--radius:10px;--reading-max:42rem;--color-hero:#193c54;--color-on-hero:#fff;--color-hero-muted:#c3d9e6;--color-hero-line:#587488;--color-positive-tint:#edf4ef;--radius-lg:16px}:where(a,button,input,select,textarea,[tabindex]:not([tabindex="-1"])):focus-visible{outline:var(--focus-ring-width) solid var(--focus-ring);outline-offset:var(--focus-ring-offset)}*{box-sizing:border-box}body{background:var(--color-bg);color:var(--color-text);font-family:var(--font-body);line-height:var(--line-normal);min-height:100vh;margin:0}#root{min-height:100vh}a{color:var(--color-link)}.app-shell{flex-direction:column;min-height:100vh;display:flex}.app-bar{z-index:100;border-bottom:1px solid var(--color-border);min-height:56px;font-size:var(--text-sm);color:var(--color-text-muted);background:var(--color-surface);justify-content:space-between;align-items:center;gap:1.5rem;padding:0 1.5rem;display:flex;position:sticky;top:0}.app-bar-primary,.app-bar-tools{align-items:center;gap:1.5rem;display:flex}.app-bar-tools{gap:.75rem}.app-brand{font-family:var(--font-display);letter-spacing:-.02em;color:var(--color-text);align-items:center;gap:.55rem;font-size:1.05rem;font-weight:700;display:flex}.brand-mark{background:var(--color-text);width:26px;height:26px;color:var(--color-surface);border-radius:7px;place-items:center;font-size:.72rem;font-weight:700;display:grid}.app-nav{flex:1;gap:.25rem;display:flex}.app-nav a{color:var(--color-text-muted);border-radius:8px;padding:.45rem .75rem;font-size:.9rem;font-weight:500;text-decoration:none}.app-nav a:hover{color:var(--color-text);background:oklch(96% .005 265);text-decoration:none}.app-nav a.active,.app-nav a[aria-current=page]{color:var(--color-text);background:oklch(94% .01 265);font-weight:600}.app-bar a{color:inherit;text-decoration:none}.app-bar a:hover{text-decoration:none}.app-crumbs{padding:var(--space-2) var(--space-4);border-bottom:1px solid var(--color-border);font-size:var(--text-sm);background:var(--color-surface)}.review-chip{min-height:var(--target-min);border-radius:var(--radius-pill);color:var(--review);letter-spacing:.02em;background:oklch(96% .03 35);border:1px solid oklch(88% .04 35);align-items:center;gap:.4rem;padding:.35rem .7rem;font-size:.78rem;font-weight:600;text-decoration:none;display:inline-flex}.review-chip:hover{background:oklch(94% .04 35)}.review-chip.is-due{background:oklch(96% .03 35);border-color:oklch(88% .04 35)}.review-dot{background:var(--review);border-radius:50%;width:7px;height:7px}.hub-heading{margin:0 0 var(--space-3);font-size:var(--text-lg)}.hub-jobs,.create-chooser{gap:var(--space-3);margin:var(--space-5) 0 0;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));display:grid}.app-main{width:100%;max-width:1100px;padding:var(--space-5) var(--space-4) var(--space-8);flex:1;margin:0 auto}.cmp-header{justify-content:space-between;align-items:flex-start;gap:var(--space-4);margin-bottom:var(--space-5);flex-wrap:wrap;display:flex}.cmp-header h1{font-family:var(--font-display);font-weight:400;font-size:var(--text-2xl);line-height:var(--line-tight);margin:0}.cmp-header .tagline{color:var(--color-text-muted);font-size:var(--text-sm);margin:var(--space-2) 0 0;max-width:36rem}.cmp-lang{border:1px solid var(--color-border);background:var(--color-surface);border-radius:8px;padding:0;display:flex;overflow:hidden}.cmp-lang button{min-width:36px;min-height:32px;color:var(--color-text-muted);font:inherit;letter-spacing:.02em;cursor:pointer;background:0 0;border:none;border-radius:0;padding:.35rem .65rem;font-size:.78rem;font-weight:600}.cmp-lang button[aria-pressed=true]{background:var(--color-text);color:var(--color-surface)}.cmp-path-list{gap:var(--space-3);display:grid}.path-card{background:var(--color-surface-raised);border:1px solid var(--color-border-subtle);border-radius:var(--radius);padding:var(--space-4);gap:var(--space-2);display:grid}.path-card h2{font-size:var(--text-lg);margin:0;font-weight:600}.path-card p{color:var(--color-text-muted);font-size:var(--text-sm);margin:0}.path-meta{font-family:var(--font-mono);font-size:var(--text-xs);color:var(--color-text-soft)}.path-actions{gap:var(--space-2);margin-top:var(--space-2);flex-wrap:wrap;display:flex}.btn{min-height:var(--control-height);min-width:var(--target-min);background:var(--color-action);color:var(--color-action-text);font:inherit;letter-spacing:.02em;cursor:pointer;border:0;border-radius:8px;justify-content:center;align-items:center;gap:.4rem;padding:.55rem 1rem;font-size:.88rem;font-weight:600;text-decoration:none;display:inline-flex}.btn:hover{background:oklch(46% .14 245)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-ghost{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}.btn-ghost:hover{background:oklch(97% .005 265)}.access-gate{min-height:100vh;padding:var(--space-4);place-items:center;display:grid}.access-card{width:min(100%,30rem);padding:var(--space-5);border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface)}.access-eyebrow{margin:0 0 var(--space-2);color:var(--color-text-soft);font-size:var(--text-sm);letter-spacing:.08em;text-transform:uppercase;font-weight:700}.access-card h1{font-family:var(--font-display);font-size:var(--text-xl);margin:0}.access-card>p:not(.access-eyebrow){margin:var(--space-2) 0 0;color:var(--color-text-muted)}.access-form{gap:var(--space-2);margin-top:var(--space-4);display:grid}.access-form label{font-weight:600}.access-form input{min-height:var(--control-height);padding:var(--space-2) var(--space-3);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);font:inherit;border-radius:8px}.access-error{color:var(--color-danger);font-size:var(--text-sm);margin:0}.path-intro h2{font-family:var(--font-display);font-weight:400;font-size:var(--text-xl);margin:0 0 var(--space-2)}.path-intro p{color:var(--color-text-muted);font-size:var(--text-sm);max-width:36rem;margin:0}.mind-elixir-host{width:100%;height:min(78vh,820px);min-height:560px;margin-top:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius);cursor:grab;touch-action:none;background:#fff;overflow:hidden}.mind-elixir-host:active{cursor:grabbing}.cmp-path-rail{padding-left:var(--space-4);margin-top:var(--space-4);gap:0;display:grid;position:relative}.cmp-path-rail:before{content:"";background:var(--color-border-subtle);width:2px;position:absolute;top:12px;bottom:12px;left:11px}.concept-row{gap:var(--space-3);padding:var(--space-3) 0;grid-template-columns:auto 1fr auto;align-items:center;display:grid;position:relative}.concept-dot{border:2px solid var(--color-border);background:var(--color-bg);z-index:1;border-radius:50%;flex-shrink:0;width:24px;height:24px;position:relative}.concept-body a{color:inherit;padding:var(--space-2) var(--space-3);border-radius:var(--radius);border:1px solid #0000;text-decoration:none;display:block}.concept-body a:hover:not(.disabled){border-color:var(--color-border-subtle);background:var(--color-surface-raised)}.concept-body strong{font-size:var(--text-md);display:block}.concept-body span{font-size:var(--text-sm);color:var(--color-text-muted)}.concept-row.locked .concept-body{opacity:.65}.concept-row.locked .concept-body a.disabled{pointer-events:none;cursor:not-allowed}.state-badge{font-family:var(--font-mono);font-size:var(--text-xs);padding:var(--space-1) var(--space-2);white-space:nowrap;border-radius:999px;font-weight:600}.state-mastered{color:var(--color-state-mastered);background:var(--color-state-mastered-bg)}.state-practiced{color:var(--color-state-practiced);background:var(--color-state-practiced-bg)}.state-learning{color:var(--color-state-learning);background:var(--color-state-learning-bg)}.state-locked,.state-available{color:var(--color-state-locked);background:var(--color-state-locked-bg)}.concept-row.mastered .concept-dot{border-color:var(--color-state-mastered);background:var(--color-state-mastered-bg)}.concept-row.practiced .concept-dot{border-color:var(--color-state-practiced);background:var(--color-state-practiced-bg)}.concept-row.learning .concept-dot{border-color:var(--color-state-learning);background:var(--color-state-learning-bg)}.concept-row.locked .concept-dot,.concept-row.available .concept-dot{border-color:var(--color-state-locked);background:var(--color-state-locked-bg)}.lesson-article{max-width:var(--reading-max);margin:0 auto}.lesson-article h2{font-family:var(--font-display);font-weight:400;font-size:var(--text-xl);margin:0 0 var(--space-3)}.lesson-body{white-space:pre-wrap;font-size:var(--text-md);line-height:var(--line-normal)}.lesson-actions{gap:var(--space-2);margin-top:var(--space-5);flex-wrap:wrap;display:flex}.locked-panel{background:var(--color-surface-raised);border:1px solid var(--color-border-subtle);border-radius:var(--radius);padding:var(--space-5);max-width:var(--reading-max);margin:0 auto}.locked-panel h2{margin:0 0 var(--space-3);font-family:var(--font-display);font-weight:400}.locked-panel ul{margin:var(--space-3) 0;padding-left:1.25rem}.cmp-quiz{width:100%;max-width:var(--reading-max);gap:var(--space-4);margin:0 auto;display:grid}.quiz-progress{font-family:var(--font-mono);font-size:var(--text-xs);color:var(--color-text-muted)}.cmp-quiz fieldset{border:none;margin:0;padding:0}.cmp-quiz legend{font-family:var(--font-display);font-size:var(--text-lg);margin-bottom:var(--space-4);padding:0;font-weight:400}.cmp-quiz-options{gap:var(--space-2);display:grid}.quiz-option{align-items:center;gap:var(--space-3);min-height:var(--control-height);padding:var(--space-3) var(--space-4);background:var(--color-surface-raised);border:1px solid var(--color-border-subtle);border-radius:var(--radius);cursor:pointer;font-size:var(--text-md);display:flex}.quiz-option input{width:20px;height:20px;accent-color:var(--color-action)}.quiz-option.selected{border-color:var(--color-action);background:var(--color-action-tint)}.quiz-option.correct{border-color:var(--color-success);background:var(--color-success-bg)}.quiz-option.incorrect{border-color:var(--color-danger);background:var(--color-danger-bg)}.quiz-option.disabled{cursor:default;opacity:.85}.cmp-quiz-explain{background:var(--color-surface-raised);border:1px solid var(--color-border-subtle);border-radius:var(--radius);padding:var(--space-4);font-size:var(--text-sm);color:var(--color-text-muted)}.cmp-quiz-explain strong{color:var(--color-text);margin-bottom:var(--space-2);display:block}.cmp-quiz-explain.empty{color:var(--color-text-soft);border-style:dashed}.quiz-results{text-align:center;padding:var(--space-6)}.quiz-results h2{font-family:var(--font-display);font-weight:400;font-size:var(--text-xl);margin:0 0 var(--space-3)}.progress-grid{gap:var(--space-3);margin:var(--space-5) 0;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));display:grid}.stat-card{background:var(--color-surface-raised);border:1px solid var(--color-border-subtle);border-radius:var(--radius);padding:var(--space-4);text-align:center}.stat-card .value{font-family:var(--font-display);font-size:var(--text-2xl);display:block}.stat-card .label{font-size:var(--text-sm);color:var(--color-text-muted)}.weak-list{margin:var(--space-3) 0;gap:var(--space-2);padding:0;list-style:none;display:grid}.weak-list li{background:var(--color-surface-raised);border:1px solid var(--color-border-subtle);border-radius:var(--radius);padding:var(--space-3) var(--space-4)}.weak-list a{color:inherit;font-weight:600;text-decoration:none}.reset-section{margin-top:var(--space-6);padding-top:var(--space-5);border-top:1px solid var(--color-border-subtle)}.modal-backdrop{padding:var(--space-4);z-index:100;background:#0009;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:var(--color-surface);border:1px solid var(--color-border-subtle);border-radius:var(--radius);padding:var(--space-5);width:100%;max-width:28rem}.modal h3{margin:0 0 var(--space-3);font-family:var(--font-display);font-weight:400}.modal p{margin:0 0 var(--space-4);color:var(--color-text-muted);font-size:var(--text-sm)}.modal-actions{gap:var(--space-2);flex-wrap:wrap;display:flex}.path-toolbar{gap:var(--space-2);margin-top:var(--space-3);flex-wrap:wrap;display:flex}.cmp-topic-cta{justify-content:space-between;align-items:center;gap:var(--space-4);background:var(--color-action-tint);border:1px dashed var(--color-action);border-radius:var(--radius);padding:var(--space-4);margin-bottom:var(--space-5);flex-wrap:wrap;display:flex}.cmp-topic-cta .cta-title{margin:0 0 var(--space-1);font-weight:600}.cmp-topic-cta p{font-size:var(--text-sm);color:var(--color-text-muted);margin:0}.topic-form{gap:var(--space-4);max-width:28rem;margin-top:var(--space-5);display:grid}.topic-form label{gap:var(--space-2);font-size:var(--text-sm);font-weight:600;display:grid}.topic-form input{min-height:var(--control-height);padding:0 var(--space-3);border-radius:var(--radius);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);font:inherit}.result-panel{margin-top:var(--space-5);padding:var(--space-4);background:var(--color-surface);border:1px solid var(--color-border-subtle);border-radius:var(--radius);max-width:32rem}.result-error{color:var(--color-danger);margin-top:var(--space-4)}.ambig-list{margin:var(--space-3) 0 0;gap:var(--space-2);padding:0;list-style:none;display:grid}.offline-hint{font-size:var(--text-sm);color:var(--color-text-muted)}.materials-loading{gap:var(--space-3);margin:var(--space-4) 0;padding:var(--space-3) var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius);background:oklch(97% .01 245);align-items:flex-start;display:flex}.materials-spinner{border:2px solid oklch(82% .04 245);border-top-color:oklch(48% .14 245);border-radius:50%;flex-shrink:0;width:1.25rem;height:1.25rem;margin-top:.15rem;animation:.7s linear infinite materials-spin}@keyframes materials-spin{to{transform:rotate(360deg)}}.materials-loading-title{font-size:var(--text-sm);margin:0;font-weight:650}.materials-loading-hint{font-size:var(--text-sm);color:var(--color-text-muted);margin:.2rem 0 0}.resource-list{margin:var(--space-3) 0 0;gap:var(--space-3);padding:0;list-style:none;display:grid}.resource-card{padding:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface)}.resource-card a{margin-top:.2rem;font-weight:650;display:block}.resource-card p{font-size:var(--text-sm);color:var(--color-text-muted);margin:.35rem 0 0}.resource-kind{letter-spacing:.03em;text-transform:uppercase;border-radius:var(--radius-pill);padding:.15rem .45rem;font-size:.72rem;font-weight:700;display:inline-block}.resource-card.is-youtube .resource-kind{color:oklch(42% .14 25);background:oklch(94% .04 25)}.resource-card.is-blog .resource-kind{color:oklch(38% .1 245);background:oklch(94% .02 245)}.cmp-outline-header h1{font-family:var(--font-display);font-weight:400;font-size:var(--text-xl);margin:0 0 var(--space-2)}.cmp-outline-list{margin:var(--space-5) 0;gap:var(--space-2);padding:0;list-style:none;display:grid}.unit-row{gap:var(--space-3);background:var(--color-surface-raised);border:1px solid var(--color-border-subtle);border-radius:var(--radius);padding:var(--space-3);grid-template-columns:auto 1fr auto;align-items:start;display:grid}.unit-index{font-family:var(--font-mono);font-size:var(--text-xs);color:var(--color-text-soft);min-width:1.5rem;padding-top:var(--space-2)}.unit-titles{gap:var(--space-2);min-width:0;display:grid}.unit-titles input,.unit-titles textarea,.unit-titles select{width:100%;min-height:var(--target-min);padding:var(--space-2) var(--space-3);border:1px solid var(--color-border);border-radius:calc(var(--radius) - 4px);background:var(--color-bg);color:var(--color-text);font:inherit;font-size:var(--text-sm)}.unit-titles textarea{resize:vertical;min-height:3.5rem}.unit-difficulty{align-items:center;gap:var(--space-2);display:flex}.unit-difficulty-label{font-size:var(--text-xs);color:var(--color-text-muted);white-space:nowrap;font-weight:600}.unit-difficulty select{flex:1;width:auto;min-width:10rem}.unit-es-label{font-size:var(--text-xs);color:var(--color-text-muted);font-weight:600}.unit-meta{font-size:var(--text-xs);color:var(--color-text-muted);display:block}.unit-reorder{gap:var(--space-1);flex-wrap:wrap;display:flex}.btn-icon{min-width:var(--target-min);padding:0 var(--space-2)}.outline-footer{gap:var(--space-3);margin-top:var(--space-4);flex-wrap:wrap;align-items:center;display:flex}.outline-footer span,.outline-validation{font-size:var(--text-sm);color:var(--color-text-muted)}.outline-validation{color:var(--color-danger)}.gen-status{font-family:var(--font-mono);font-size:var(--text-xs);padding:var(--space-1) 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