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var(--accent);padding-top:1.1rem}.pv-role-h{margin:0 0 .5rem}.pv-role-b{margin:0;font-size:.95rem;line-height:1.6;color:var(--text-muted)}.qa-shell{max-width:640px;margin:0 auto;padding:var(--space-4) var(--space-5) var(--space-8);position:relative;width:100%}.qa-topbar{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);margin-bottom:var(--space-4)}.qa-topbar-right{display:flex;align-items:center;gap:var(--space-1-5)}.qa-hud-chip{font-size:var(--text-xs);font-family:var(--font-mono, monospace);padding:var(--space-1) var(--space-2);border:1px solid 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var(--border);color:var(--text-muted)}.qa-difficulty{letter-spacing:.15em;font-size:var(--text-3xs)}.qa-item{border:none;margin:0;padding:0}.qa-framing{display:inline-block;font-size:var(--text-xs);font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin-bottom:var(--space-1-5)}.qa-prompt{font-size:var(--text-xl);line-height:1.45;margin-bottom:var(--space-4);padding:0}.qa-code{background:var(--surface-alt);border:1px solid var(--border);border-radius:var(--radius-sm);padding:var(--space-3) var(--space-4);font-size:var(--text-md);overflow-x:auto;margin:0 0 var(--space-4)}.qa-hint-text{font-size:var(--text-sm);color:var(--text-muted);margin:0 0 var(--space-2)}.qa-options{display:flex;flex-direction:column;gap:var(--space-2)}.qa-option{display:flex;align-items:flex-start;gap:var(--space-3);text-align:left;padding:var(--space-3) var(--space-3-5);border-radius:var(--radius);border:1.5px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;font-size:var(--text-lg);transition:transform 80ms ease,border-color .12s ease}.qa-option:hover{border-color:var(--accent)}.qa-option:active{transform:scale(.985)}.qa-option.selected{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,var(--surface))}.qa-option-key{flex:none;width:1.5rem;height:1.5rem;display:grid;place-items:center;border-radius:7px;border:1px solid var(--border);font-size:var(--text-xs);font-weight:600}.qa-option.selected .qa-option-key{background:var(--accent);border-color:var(--accent);color:#fff}.qa-fill .qa-blank-text{font-size:var(--text-lg);margin:0 0 var(--space-2-5)}.qa-free-text{width:100%;border-radius:var(--radius);border:1.5px solid var(--border);background:var(--surface);color:var(--text);padding:var(--space-3) var(--space-3-5);font-size:var(--text-lg);font-family:inherit;resize:vertical}.qa-free-text:focus{outline:none;border-color:var(--accent)}.qa-ordering{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--space-1-5);counter-reset:order}.qa-ordering li{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2-5);padding:var(--space-2-5) var(--space-3);border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--surface)}.qa-ordering li:before{counter-increment:order;content:counter(order);font-size:var(--text-xs);color:var(--text-muted);margin-right:var(--space-1-5)}.qa-order-label{flex:1;font-size:var(--text-md)}.qa-order-controls{display:flex;gap:var(--space-1)}.qa-order-controls button{border:1px solid var(--border);background:var(--surface-alt);border-radius:7px;width:1.9rem;height:1.9rem;cursor:pointer;color:var(--text)}.qa-order-controls button:disabled{opacity:.3;cursor:default}.qa-matching{display:flex;flex-direction:column;gap:var(--space-2)}.qa-match-row{display:flex;align-items:center;gap:var(--space-3)}.qa-match-left{flex:1;font-size:var(--text-md)}.qa-match-row select{flex:1}.qa-hints{margin:var(--space-3-5) 0 0;padding-left:var(--space-4);display:flex;flex-direction:column;gap:var(--space-1-5)}.qa-hints li{font-size:var(--text-md);color:var(--text-muted);animation:qa-fade-in .24s ease}@keyframes qa-fade-in{0%{opacity:0;transform:translateY(3px)}}.qa-confidence{display:flex;align-items:center;gap:var(--space-2);margin-top:var(--space-4);flex-wrap:wrap}.qa-confidence-label{font-size:var(--text-sm);color:var(--text-muted);margin-right:var(--space-1)}.qa-conf-btn{padding:var(--space-1-5) var(--space-3);border-radius:var(--radius-pill);border:1.5px solid var(--border);background:var(--surface);color:var(--text-muted);cursor:pointer;font-size:var(--text-sm)}.qa-conf-btn.selected{border-color:var(--accent);color:var(--accent);font-weight:600}.qa-actions{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);margin-top:var(--space-4)}.qa-hint-btn{background:none;border:1px dashed var(--border);color:var(--text-muted);border-radius:var(--radius-pill);padding:var(--space-1-5) var(--space-3-5);cursor:pointer;font-size:var(--text-sm)}.qa-hint-btn:hover:not(:disabled){color:var(--accent);border-color:var(--accent)}.qa-hint-btn:disabled{opacity:.4;cursor:default}.qa-submit{min-width:8rem}.qa-feedback{margin-top:var(--space-4);border-radius:14px;padding:var(--space-3-5) var(--space-4);border:1.5px solid;animation:qa-fade-in .22s ease}.qa-feedback.is-correct{border-color:#3f9d58;background:color-mix(in srgb,#3f9d58 8%,var(--surface))}.qa-feedback.is-miss{border-color:#cf9236;background:color-mix(in srgb,#cf9236 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var(--space-1-5)}.qa-correct-answer{margin-top:var(--space-2-5);font-size:var(--text-md)}.qa-ca-label{font-size:var(--text-2xs);text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);display:block;margin-bottom:var(--space-0-5)}.qa-correct-answer ol{margin:var(--space-1) 0 0;padding-left:var(--space-5)}.qa-feedback-meta{display:flex;flex-direction:column;gap:var(--space-1);margin-top:var(--space-2-5)}.qa-source{font-size:var(--text-xs);color:var(--text-muted);font-family:var(--font-mono, monospace)}.qa-followup{font-size:var(--text-sm);color:var(--text-muted);font-style:italic}.qa-loading{text-align:center;padding:var(--space-12) var(--space-4)}.qa-loading-pulse{width:44px;height:44px;border-radius:50%;margin:0 auto var(--space-5);background:var(--accent);opacity:.7;animation:qa-breathe 1.2s ease-in-out infinite}@keyframes qa-breathe{50%{transform:scale(1.25);opacity:.35}}.qa-loading-title{font-size:var(--text-lg);margin:0 0 var(--space-1-5)}.qa-loading-tip{font-size:var(--text-md);color:var(--text-muted);max-width:28rem;margin:0 auto}.qa-victory{text-align:center;padding:var(--space-5) var(--space-1) var(--space-2);position:relative;max-width:30rem;margin:0 auto}.qa-victory-eyebrow{display:block;font-size:var(--text-2xs);font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);margin-bottom:var(--space-2)}.qa-victory-headline{font-size:var(--text-3xl);font-weight:500;letter-spacing:-.01em;margin:0}.qa-victory-sub{font-size:var(--text-md);color:var(--text-muted);margin:var(--space-1-5) 0 var(--space-7)}.qa-victory-stats{display:flex;align-items:center;justify-content:center;gap:var(--space-8);flex-wrap:wrap;padding:var(--space-5) var(--space-6);border:1px solid var(--border);border-radius:16px;background:var(--surface)}.qa-ring{width:124px;height:124px;flex:none}.qa-ring-track{fill:none;stroke:var(--border);stroke-width:10}.qa-ring-fill{fill:none;stroke:var(--accent);stroke-width:10;stroke-linecap:round;transition:stroke-dasharray .9s cubic-bezier(.22,1,.36,1)}.qa-ring-value{font-size:var(--text-3xl);font-weight:600;fill:var(--text)}.qa-ring-label{font-size:var(--text-3xs);fill:var(--text-muted);text-transform:uppercase;letter-spacing:.08em}.qa-victory-numbers{display:flex;gap:var(--space-8)}.qa-stat{display:flex;flex-direction:column;align-items:center;gap:var(--space-1);min-width:3.6rem}.qa-stat-value{font-size:var(--text-3xl);font-weight:600;line-height:1;font-variant-numeric:tabular-nums}.qa-xp-value{color:var(--accent)}.qa-stat-label{font-size:var(--text-2xs);color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;white-space:nowrap}.qa-shield{font-size:var(--text-sm);margin-left:var(--space-1);vertical-align:.15em}.qa-victory-total{font-size:var(--text-sm);color:var(--text-muted);margin:var(--space-3) 0 0;font-variant-numeric:tabular-nums}.qa-victory-note{color:#3f9d58;font-size:var(--text-md);margin:var(--space-4) 0 0}.qa-badges{display:flex;justify-content:center;gap:var(--space-2);flex-wrap:wrap;margin-top:var(--space-4)}.qa-badge{font-size:var(--text-sm);font-weight:500;padding:var(--space-1-5) var(--space-3-5);border-radius:var(--radius-pill);border:1.5px solid #e8b23f;color:#e8b23f;background:color-mix(in srgb,#e8b23f 8%,transparent);animation:qa-pop .42s cubic-bezier(.34,1.56,.64,1)}.qa-recap,.qa-calibration{margin:var(--space-6) 0 0;text-align:left;border:1px solid var(--border);border-radius:16px;background:var(--surface);padding:var(--space-4) var(--space-5)}.qa-recap-title{display:block;font-size:var(--text-2xs);font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:var(--space-2-5)}.qa-recap-list{list-style:none;margin:0;padding:0}.qa-recap-row{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:var(--space-2) 0;border-top:1px solid var(--border)}.qa-recap-row:first-child{border-top:none}.qa-recap-concept{font-size:var(--text-md);font-weight:500}.qa-recap-chip{flex:none;max-width:55%;font-size:var(--text-xs);line-height:1.35;text-align:right;color:#cf9236;border:1px solid color-mix(in srgb,#cf9236 45%,transparent);background:color-mix(in srgb,#cf9236 8%,transparent);border-radius:8px;padding:var(--space-1) var(--space-2)}.qa-recap-hint{font-size:var(--text-xs);color:var(--text-muted);margin:var(--space-3) 0 0}.qa-calibration-line{font-size:var(--text-md);margin:var(--space-1) 0 0;line-height:1.5}.qa-calibration-line:first-of-type{margin-top:0}.qa-victory-actions{display:flex;justify-content:center;gap:var(--space-3);margin-top:var(--space-7);flex-wrap:wrap}.qa-cta{min-width:10rem}.qa-btn-ghost{min-width:10rem;padding:var(--space-2-5) var(--space-5);border-radius:var(--radius-sm);cursor:pointer;background:transparent;border:1.5px solid var(--border);color:var(--text);font-size:var(--text-md);transition:border-color .12s ease,color .12s ease}.qa-btn-ghost:hover{border-color:var(--accent);color:var(--accent)}.confetti-layer{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;pointer-events:none}.confetti-piece{position:absolute;width:7px;height:10px;border-radius:2px;animation:confetti-fly .8s cubic-bezier(.22,.9,.36,1) forwards}@keyframes confetti-fly{to{transform:translate(var(--dx),calc(var(--dy) + 120px)) rotate(var(--rot));opacity:0}}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}@media (max-width: 560px){.qa-shell{padding:var(--space-3) var(--space-3-5) var(--space-6)}.qa-prompt{font-size:var(--text-lg)}.qa-victory-stats{gap:var(--space-4)}.qa-option{padding:var(--space-3-5) var(--space-3)}.qa-actions{flex-direction:column-reverse;align-items:stretch}.qa-submit{width:100%}}@media (prefers-reduced-motion: reduce){.qa-dot.now,.qa-loading-pulse,.qa-feedback,.qa-hints li,.qa-xp-chip,.qa-combo-chip,.qa-badge{animation:none}.qa-ring-fill{transition:none}}.an-overview{display:flex;flex-direction:column;gap:var(--space-4);max-width:980px;margin:0 auto}.an-toolbar{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-3)}.an-title{margin:0;font-size:var(--text-xl)}.an-range{display:flex;gap:var(--space-1-5)}.an-range-btn{font:inherit;font-size:var(--text-xs);padding:var(--space-1) var(--space-3);border-radius:var(--radius-pill);border:1px solid var(--border);background:none;color:var(--text-muted);cursor:pointer}.an-range-btn.active{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}.an-headline-grid{display:grid;grid-template-columns:1fr;gap:var(--space-3)}@media (min-width: 560px){.an-headline-grid{grid-template-columns:1fr 1fr}}@media (min-width: 960px){.an-headline-grid{grid-template-columns:repeat(4,1fr)}}.an-secondary-grid{display:grid;grid-template-columns:1fr;gap:var(--space-3)}@media (min-width: 560px){.an-secondary-grid{grid-template-columns:1fr 1fr}}.an-card{display:flex;flex-direction:column;gap:var(--space-2);text-align:left;font:inherit;color:inherit;background:var(--surface-alt);border:1px solid var(--border);border-radius:var(--radius);padding:var(--space-3-5) var(--space-4);cursor:pointer}.an-card:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.an-card-open{border-color:var(--accent)}.an-card-top{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2)}.an-card-name{font-family:var(--font-sans);font-size:var(--text-3xs);letter-spacing:.05em;text-transform:uppercase;color:var(--text-muted)}.an-card-value{font-size:var(--text-5xl);font-weight:650;line-height:1;font-variant-numeric:tabular-nums}.an-card-headline .an-card-value{font-size:var(--text-6xl)}.an-card-unit{font-size:var(--text-lg);font-weight:400;color:var(--text-muted);margin-left:var(--space-0-5)}.an-card-meta{display:flex;gap:var(--space-2-5);align-items:baseline}.an-confidence{font-size:var(--text-xs);color:var(--text-muted)}.an-sample{font-family:var(--font-mono);font-size:var(--text-2xs);color:var(--text-muted)}.an-status{font-size:var(--text-2xs);font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:var(--space-0-5) var(--space-2);border-radius:var(--radius-pill);border:1px solid 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var(--border);padding-top:var(--space-2-5);display:flex;flex-direction:column;gap:var(--space-2)}.an-explanation{margin:0;font-size:var(--text-sm);color:var(--text-muted)}.an-breakdown{display:flex;flex-direction:column;gap:var(--space-1)}.an-contrib{display:flex;justify-content:space-between;gap:var(--space-3);font-size:var(--text-sm)}.an-contrib-missing{opacity:.55}.an-contrib-weight,.an-contrib-n{color:var(--text-muted);font-size:var(--text-xs)}.an-contrib-value{font-variant-numeric:tabular-nums;white-space:nowrap}.an-trend-svg{width:100%;height:auto;display:block}.an-trend-line{stroke:var(--accent);stroke-width:1.5}.an-trend-dot{fill:var(--accent)}.an-trend-caption{margin:var(--space-0-5) 0 0;font-family:var(--font-sans);font-size:var(--text-3xs);color:var(--text-muted)}.an-formula{margin:0;font-family:var(--font-mono);font-size:var(--text-2xs);color:var(--text-muted)}.an-rec{background:var(--surface-alt);border:1px solid var(--accent);border-radius:var(--radius);padding:var(--space-3-5) var(--space-4)}.an-rec-eyebrow{font-family:var(--font-sans);font-size:var(--text-3xs);letter-spacing:.05em;text-transform:uppercase;color:var(--accent)}.an-rec-action{margin:var(--space-1) 0 0;font-size:var(--text-lg);font-weight:550}.an-rec-why{font:inherit;font-size:var(--text-xs);background:none;border:none;color:var(--text-muted);padding:var(--space-1-5) 0 0;cursor:pointer}.an-rec-detail{border-top:1px solid var(--border);margin-top:var(--space-2);padding-top:var(--space-2);font-size:var(--text-md)}.an-rec-detail p{margin:0 0 var(--space-1-5)}.an-rec-meta{color:var(--text-muted);font-size:var(--text-xs)}.an-no-rec{margin:0}.an-study{display:flex;flex-direction:column;gap:var(--space-3)}.an-section-title{margin:var(--space-1) 0 0;font-family:var(--font-sans);font-size:var(--text-2xs);letter-spacing:.05em;text-transform:uppercase;color:var(--text-muted)}.an-strip-wrap{background:var(--surface-alt);border:1px solid var(--border);border-radius:var(--radius);padding:var(--space-3) var(--space-4)}.an-strip{display:flex;gap:var(--space-0-5);flex-wrap:wrap}.an-strip-day{width:12px;height:12px;border-radius:3px;background:var(--surface);border:1px solid var(--border)}.an-strip-day.active{background:var(--accent);border-color:var(--accent)}.an-strip-caption{margin:var(--space-2) 0 0;font-family:var(--font-sans);font-size:var(--text-2xs);color:var(--text-muted)}.an-study-facts{display:flex;flex-wrap:wrap;gap:var(--space-5);padding:0 var(--space-1)}.an-concepts{background:var(--surface-alt);border:1px solid var(--border);border-radius:var(--radius);padding:var(--space-3-5) var(--space-4)}.an-concepts-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:var(--space-1-5)}.an-concepts-head h3{margin:0;font-size:var(--text-lg)}.an-concept{padding:var(--space-2-5) 0}.an-concept+.an-concept{border-top:1px solid var(--border)}.an-concept-main{display:flex;align-items:baseline;gap:var(--space-2-5)}.an-concept-name{flex:1;font-weight:550;font-size:var(--text-md)}.an-concept-mastery{font-variant-numeric:tabular-nums;font-size:var(--text-md);color:var(--text-muted)}.an-due{font-size:var(--text-2xs);font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--accent);border:1px solid var(--accent);border-radius:var(--radius-pill);padding:var(--space-0-5) var(--space-2);white-space:nowrap}.an-concept-sub{display:flex;flex-wrap:wrap;gap:var(--space-3-5);margin-top:var(--space-1)}.an-acc{font-size:var(--text-xs);font-variant-numeric:tabular-nums}.an-acc-label{color:var(--text-muted);font-family:var(--font-sans);font-size:var(--text-2xs);letter-spacing:.04em;text-transform:uppercase;margin-right:var(--space-1)}.an-acc-pair{display:flex;gap:var(--space-3-5)}.an-concept-tags{display:flex;flex-wrap:wrap;gap:var(--space-1);margin-top:var(--space-1-5)}.an-tag{font-size:var(--text-xs);padding:var(--space-0-5) var(--space-2);border-radius:var(--radius-pill);background:var(--danger-soft);color:var(--danger)}@media (prefers-reduced-motion: no-preference){.an-card{transition:border-color .15s ease}}:root{--flashcard-radius: 0px;--flashcard-min-height: 260px;--flashcard-padding: 1.75rem;--flashcard-shadow: -6px 6px 0 var(--accent-soft);--flashcard-front-background: var(--surface);--flashcard-back-background: var(--surface-alt);--flashcard-text-primary: var(--text);--flashcard-text-secondary: var(--text-muted);--flashcard-accent: var(--accent);--flashcard-border: 1px solid var(--border);--flashcard-animation-duration: .22s;--flashcard-align: center}.tutor-layout.workspace-open{grid-template-columns:220px 1fr minmax(380px,1fr)}.tutor-layout.workspace-open.workspace-expanded{grid-template-columns:220px minmax(0,.75fr) minmax(0,1.6fr)}@media (max-width: 900px){.tutor-layout.workspace-open,.tutor-layout.workspace-open.workspace-expanded{grid-template-columns:1fr}.workspace-panel{position:fixed;inset:var(--header-height) 0 0 0;z-index:50}}.workspace-trigger{font-family:var(--font-sans);font-size:var(--text-2xs);letter-spacing:.04em;text-transform:uppercase;background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent);padding:var(--space-1-5) 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button:hover{border-color:var(--accent);color:var(--accent)}.workspace-panel-body{flex:1;overflow-y:auto;padding:var(--space-6)}.activity-header{margin-bottom:var(--space-5)}.activity-title{margin:0 0 var(--space-1-5);font-size:var(--text-xl);font-weight:600;letter-spacing:-.01em}.activity-instructions{margin:0 0 var(--space-2-5);color:var(--text-muted);font-size:var(--text-md)}.activity-badges{display:flex;gap:var(--space-1-5);flex-wrap:wrap}.activity-badge{font-family:var(--font-sans);font-size:var(--text-3xs);letter-spacing:.05em;text-transform:uppercase;padding:var(--space-0-5) var(--space-2);border:1px solid var(--border);color:var(--text-muted)}.activity-badge.mode{border-color:var(--accent);color:var(--accent)}.activity-fallback{border:1px dashed var(--border);padding:var(--space-5);background:var(--surface-alt)}.activity-fallback-title{margin:0 0 var(--space-1-5);font-weight:600}.activity-fallback-errors{margin:var(--space-1-5) 0 0;padding-left:var(--space-4);color:var(--text-muted);font-size:var(--text-md)}.flashcard-activity{display:flex;flex-direction:column;gap:var(--space-4)}.flashcard-progress{display:flex;align-items:center;gap:var(--space-3)}.flashcard-count{font-family:var(--font-mono);font-size:var(--text-xs);color:var(--flashcard-text-secondary);flex:none}.flashcard-progress-track{flex:1;height:4px;background:var(--border);overflow:hidden}.flashcard-progress-fill{height:100%;background:var(--flashcard-accent);transition:width var(--flashcard-animation-duration) ease}.flashcard{min-height:var(--flashcard-min-height);border:var(--flashcard-border);border-radius:var(--flashcard-radius);background:var(--flashcard-front-background);box-shadow:var(--flashcard-shadow);padding:var(--flashcard-padding);display:flex;cursor:default;transition:background var(--flashcard-animation-duration) ease}.flashcard.is-flipped{background:var(--flashcard-back-background)}.flashcard:focus-visible{outline:2px solid var(--flashcard-accent);outline-offset:2px}.flashcard-face{display:flex;flex-direction:column;gap:var(--space-3-5);width:100%;text-align:var(--flashcard-align);align-items:center;justify-content:center}.flashcard-side-label{font-family:var(--font-sans);font-size:var(--text-3xs);letter-spacing:.08em;text-transform:uppercase;color:var(--flashcard-text-secondary)}.flashcard-content{margin:0;font-size:var(--text-xl);line-height:1.5;color:var(--flashcard-text-primary)}.flashcard-hint,.flashcard-trap{margin:0;font-size:var(--text-md);color:var(--flashcard-text-secondary)}.flashcard-source{margin:0;font-family:var(--font-mono);font-size:var(--text-2xs);color:var(--flashcard-text-secondary)}.flashcard-hint-button{align-self:center;background:none;border:1px solid var(--border);color:var(--flashcard-text-secondary);font-size:var(--text-sm);padding:var(--space-1) 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var(--border);color:var(--flashcard-text-secondary);font-family:var(--font-sans);font-size:var(--text-xs);padding:var(--space-1-5) var(--space-3);cursor:pointer}.flashcard-nav button:hover:not(:disabled){border-color:var(--flashcard-accent);color:var(--flashcard-accent)}.flashcard-nav button:disabled{opacity:.4;cursor:default}@media (prefers-reduced-motion: reduce){.flashcard,.flashcard-progress-fill,.confidence-button{transition:none}}