@media (prefers-reduced-motion:reduce){*,:after,:before{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}:root{color-scheme:light;--bg:#fff;--card:#f7f7f7;--border:#e5e5e5;--rule:#e5e5e5;--text-primary:#1f2937;--text:#1f2937;--soft:#111827;--dim:#6b7280;--muted:#6b7280;--accent:#111;--success:#22c55e;--success-text:#16a34a;--right:#22c55e;--warn:#f59e0b;--amber:#f59e0b;--danger-bg:#fef2f2;--danger-border:#fecaca;--warn-bg:#fef3c7;--warn-border:#fcd34d;--danger:#b91c1c;--wrong:#b91c1c;--breaking:#ef4444;--srcCard:#f7f7f7;--vpCard:#f7f7f7;--tlLine:#e5e5e5;--tlDot:#d4d4d4;--warn-text:#b45309;--hover:#f5f5f5;--accent-bg:#f0f0f0;--accent-subtle:#e4e4e8;--foreground:#1f2937;--muted-foreground:#6b7280;--text-secondary:#111827;--dim-more:#6b7280;--breaking-bg:rgba(239,68,68,.04);--developing-bg:rgba(245,158,11,.025);--font-serif:var(--font-source-serif),Georgia,serif;--font-sans:var(--font-source-sans),var(--font-inter),-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-mono:var(--font-ibm-mono),ui-monospace,SFMono-Regular,Menlo,monospace;--bg-rgb:255,255,255;--rank-gold:#b8860b;--rank-silver:#6b7280;--rank-bronze:#92400e;--tab-active-bg:rgba(0,0,0,.08);--p-bg:var(--vp-bg);--p-surface:var(--vp-surface);--p-surface-raised:var(--vp-surface);--p-surface-sunken:var(--vp-surface-soft);--p-border:var(--vp-border-soft);--p-border-strong:var(--vp-border);--p-divider:var(--vp-border-soft);--p-ink:var(--vp-ink);--p-ink-soft:var(--vp-text-muted);--p-ink-muted:var(--vp-text-muted);--p-ink-dim:var(--vp-text-soft);--p-ink-faint:var(--vp-text-soft);--p-accent:var(--vp-accent);--p-accent-soft:var(--vp-accent-soft);--p-accent-ink:#fff;--p-success:var(--vp-success);--p-success-soft:var(--vp-success-soft);--p-warn:#92400e;--p-warn-soft:#fef3c7;--p-danger:var(--vp-danger);--p-danger-soft:var(--vp-danger-soft);--p-info:#1d4ed8;--p-info-soft:#dbeafe;--p-verified:#0a66c2;--p-verified-soft:#e3f0ff;--p-expert:#7c3aed;--p-expert-soft:#ede9fe;--p-ring:color-mix(in srgb,var(--vp-accent) 30%,transparent);--p-ring-strong:color-mix(in srgb,var(--vp-accent) 60%,transparent);--vp-accent:#1d4ed8;--vp-accent-dark:#1e40af;--vp-accent-soft:#e3e9fb;--vp-accent-bg:#071426;--vp-bg:#f8f6f1;--vp-surface:#fff;--vp-surface-soft:#f0ede6;--vp-avatar-grad:linear-gradient(135deg,#8b5cf6,#3b82f6);--vp-border:#d6cfc0;--vp-border-soft:#e7e1d8;--vp-quiz-border:#e7e1d8;--vp-headline:#111827;--vp-ink:#1f2937;--vp-text-muted:#57606b;--vp-text-soft:#57606b;--vp-navy:#071426;--vp-verified:#0f766e;--vp-verified-soft:#d6edea;--vp-success:#15803d;--vp-success-soft:#e8f5ec;--vp-success-ink:#14532d;--vp-success-border:#b9dfc4;--vp-danger:#c2413a;--vp-danger-soft:#f6e5e4;--vp-danger-ink:#8b2a25;--vp-danger-border:#eccac7;--vp-success-bg:#ecfdf5;--vp-warn-bg:#fbf4e2;--vp-warn-ink:#b8892d;--vp-warn-border:#e6d8ae;--vp-on-accent:#fff;--vp-edge-accent:#e33010;--vp-shadow-sm:rgba(20,16,12,.04);--vp-shadow-md:rgba(20,16,12,.06);--vp-shadow-lg:rgba(20,16,12,.08);--vp-sticky-rgb:248,246,241;--vp-intent-question:#7c3aed;--vp-intent-question-soft:#ede9fe;--vp-intent-add:#2563eb;--vp-intent-add-soft:#dbeafe;--vp-intent-take:#0f766e;--vp-intent-take-soft:#ccfbf1;--r-sm:6px;--r-md:10px;--r-lg:14px;--r-xl:20px;--r-pill:999px;--s0:0;--s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:20px;--s6:24px;--s7:32px;--s8:40px;--s9:56px;--s10:72px;--vp-fs-display:clamp(42px,5.6vw,68px);--vp-fs-h1:clamp(32px,4.2vw,52px);--vp-fs-h2:clamp(22px,2.3vw,30px);--vp-fs-h3:clamp(18px,1.7vw,22px);--vp-fs-h4:17px;--vp-fs-lead:clamp(18px,1.5vw,22px);--vp-fs-body:17px;--vp-fs-ui:15px;--vp-fs-meta:13px;--vp-fs-caption:12px;--vp-fs-eyebrow:11px;--vp-fs-eyebrow-sm:10px;--vp-lh-tight:1.05;--vp-lh-snug:1.18;--vp-lh-body:1.55;--vp-lh-prose:1.7;--vp-lh-meta:1.4;--vp-tracking-display:-0.03em;--vp-tracking-headline:-0.018em;--vp-tracking-tight:-0.01em;--vp-tracking-eyebrow:0.1em;--vp-tracking-eyebrow-sm:0.14em}html{font-optical-sizing:auto;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--vp-bg)}.vp-eyebrow{font-size:var(--vp-fs-eyebrow);letter-spacing:var(--vp-tracking-eyebrow)}.vp-eyebrow,.vp-eyebrow-sm{font-family:var(--font-ibm-mono),"SFMono-Regular",Consolas,monospace;font-weight:700;text-transform:uppercase;color:var(--vp-text-soft)}.vp-eyebrow-sm{font-size:var(--vp-fs-eyebrow-sm);letter-spacing:var(--vp-tracking-eyebrow-sm)}@media (prefers-color-scheme:dark){:root:not([data-theme]){color-scheme:dark;--bg:#0a0a0a;--card:#18181b;--border:#27272a;--rule:#27272a;--text-primary:#fafafa;--text:#fafafa;--soft:#e4e4e7;--dim:#a1a1aa;--muted:#8b8b94;--accent:#fafafa;--srcCard:#18181b;--vpCard:#18181b;--tlLine:#27272a;--tlDot:#3f3f46;--success-text:#4ade80;--warn:#fbbf24;--amber:#fbbf24;--warn-text:#fbbf24;--warn-bg:#2d1d02;--warn-border:#78350f;--danger:#f87171;--wrong:#f87171;--danger-bg:#2d0a0a;--danger-border:#7f1d1d;--breaking:#ef4444;--hover:#27272a;--accent-bg:#1c1c1f;--accent-subtle:#2c2c32;--foreground:#fafafa;--muted-foreground:#a1a1aa;--text-secondary:#d4d4d8;--dim-more:#8b8b94;--breaking-bg:rgba(239,68,68,.12);--developing-bg:rgba(245,158,11,.1);--p-bg:var(--vp-bg);--p-surface:var(--vp-surface);--p-surface-raised:var(--vp-surface);--p-surface-sunken:var(--vp-surface-soft);--p-border:var(--vp-border-soft);--p-border-strong:var(--vp-border);--p-divider:var(--vp-border-soft);--p-ink:var(--vp-ink);--p-ink-soft:var(--vp-text-muted);--p-ink-muted:var(--vp-text-muted);--p-ink-dim:var(--vp-text-soft);--p-ink-faint:var(--vp-text-soft);--p-accent:var(--vp-accent);--p-accent-soft:var(--vp-accent-soft);--p-accent-ink:#fff;--p-success:var(--vp-success);--p-success-soft:var(--vp-success-soft);--p-warn:#fbbf24;--p-warn-soft:#2d1d02;--p-danger:var(--vp-danger);--p-danger-soft:var(--vp-danger-soft);--p-info:#60a5fa;--p-info-soft:#0c1a3d;--p-verified:#60a5fa;--p-verified-soft:#0a1a30;--p-expert:#a78bfa;--p-expert-soft:#1e0a3c;--p-ring:color-mix(in srgb,var(--vp-accent) 35%,transparent);--p-ring-strong:color-mix(in srgb,var(--vp-accent) 65%,transparent);--bg-rgb:18,18,18;--rank-gold:#f5c842;--rank-silver:#a0aec0;--rank-bronze:#ed8936;--tab-active-bg:hsla(0,0%,100%,.12);--r-sm:6px;--r-md:10px;--r-lg:14px;--r-xl:20px;--r-pill:999px;--s0:0;--s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:20px;--s6:24px;--s7:32px;--s8:40px;--s9:56px;--s10:72px;--vp-accent:#5ea9ff;--vp-accent-dark:#90c6ff;--vp-accent-soft:#0f2640;--vp-accent-bg:#006fee;--vp-bg:#14110d;--vp-surface:#1c1814;--vp-surface-soft:#221e18;--vp-border:#3f3a30;--vp-border-soft:#322d24;--vp-quiz-border:#3a3128;--vp-ink:#f5f0e7;--vp-text-muted:#c2bbad;--vp-text-soft:#a8a194;--vp-success:#4ade80;--vp-success-soft:#1b2c20;--vp-success-ink:#bbf7d0;--vp-success-border:#2f5236;--vp-danger:#f87171;--vp-danger-soft:#2d1818;--vp-danger-ink:#fecaca;--vp-danger-border:#5a2727;--vp-success-bg:#1b2c20;--vp-warn-bg:#2d1d02;--vp-shadow-sm:rgba(0,0,0,.45);--vp-shadow-md:rgba(0,0,0,.55);--vp-shadow-lg:rgba(0,0,0,.65);--vp-sticky-rgb:20,17,13;--vp-intent-question:#c4b5fd;--vp-intent-question-soft:#2a1f4a;--vp-intent-add:#93c5fd;--vp-intent-add-soft:#1a2540;--vp-intent-take:#6ee7d4;--vp-intent-take-soft:#143430}}:root[data-theme=dark]{color-scheme:dark;--bg:#0a0a0a;--card:#18181b;--border:#27272a;--rule:#27272a;--text-primary:#fafafa;--text:#fafafa;--soft:#e4e4e7;--dim:#a1a1aa;--muted:#71717a;--accent:#fafafa;--srcCard:#18181b;--vpCard:#18181b;--tlLine:#27272a;--tlDot:#3f3f46;--success-text:#4ade80;--warn:#fbbf24;--amber:#fbbf24;--warn-text:#fbbf24;--warn-bg:#2d1d02;--warn-border:#78350f;--danger:#f87171;--wrong:#f87171;--danger-bg:#2d0a0a;--danger-border:#7f1d1d;--breaking:#ef4444;--hover:#27272a;--accent-bg:#1c1c1f;--accent-subtle:#2c2c32;--foreground:#fafafa;--muted-foreground:#a1a1aa;--text-secondary:#d4d4d8;--dim-more:#71717a;--breaking-bg:rgba(239,68,68,.12);--developing-bg:rgba(245,158,11,.1);--p-bg:#0a0a0a;--p-surface:#111113;--p-surface-raised:#18181b;--p-surface-sunken:#09090b;--p-border:#27272a;--p-border-strong:#3f3f46;--p-divider:#1c1c1f;--p-ink:#fafafa;--p-ink-soft:#e4e4e7;--p-ink-muted:#a1a1aa;--p-ink-dim:#71717a;--p-ink-faint:#52525b;--p-accent:#4d8fff;--p-accent-soft:#0d1f4d;--p-accent-ink:#fff;--p-success:#22c55e;--p-success-soft:#052e16;--p-warn:#fbbf24;--p-warn-soft:#2d1d02;--p-danger:#f87171;--p-danger-soft:#2d0a0a;--p-info:#60a5fa;--p-info-soft:#0c1a3d;--p-verified:#60a5fa;--p-verified-soft:#0a1a30;--p-expert:#a78bfa;--p-expert-soft:#1e0a3c;--p-ring:rgba(77,143,255,.35);--p-ring-strong:rgba(77,143,255,.65);--bg-rgb:18,18,18;--rank-gold:#f5c842;--rank-silver:#a0aec0;--rank-bronze:#ed8936;--tab-active-bg:hsla(0,0%,100%,.12);--r-sm:6px;--r-md:10px;--r-lg:14px;--r-xl:20px;--r-pill:999px;--s0:0;--s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:20px;--s6:24px;--s7:32px;--s8:40px;--s9:56px;--s10:72px;--vp-accent:#5ea9ff;--vp-accent-dark:#90c6ff;--vp-accent-soft:#0f2640;--vp-bg:#14110d;--vp-surface:#1c1814;--vp-surface-soft:#221e18;--vp-border:#2e2a23;--vp-border-soft:#25211b;--vp-quiz-border:#3a3128;--vp-ink:#f5f0e7;--vp-text-muted:#b8b1a4;--vp-text-soft:#8a8379;--vp-success:#4ade80;--vp-success-soft:#1b2c20;--vp-success-ink:#bbf7d0;--vp-success-border:#2f5236;--vp-danger:#f87171;--vp-danger-soft:#2d1818;--vp-danger-ink:#fecaca;--vp-danger-border:#5a2727;--vp-shadow-sm:rgba(0,0,0,.45);--vp-shadow-md:rgba(0,0,0,.55);--vp-shadow-lg:rgba(0,0,0,.65);--vp-sticky-rgb:20,17,13;--vp-intent-question:#c4b5fd;--vp-intent-question-soft:#2a1f4a;--vp-intent-add:#93c5fd;--vp-intent-add-soft:#1a2540;--vp-intent-take:#6ee7d4;--vp-intent-take-soft:#143430}:root[data-theme=light]{color-scheme:light;--p-bg:#fff;--p-surface:#fafafa;--p-surface-raised:#fff;--p-surface-sunken:#f4f4f5;--p-border:#e4e4e7;--p-border-strong:#d4d4d8;--p-divider:#f1f1f3;--p-ink:#0a0a0a;--p-ink-soft:#27272a;--p-ink-muted:#52525b;--p-ink-dim:#5a5a64;--p-ink-faint:#71717a;--p-accent:#0b5cff;--p-accent-soft:#e6efff;--p-accent-ink:#fff;--p-success:#15803d;--p-success-soft:#dcfce7;--p-warn:#92400e;--p-warn-soft:#fef3c7;--p-danger:#b91c1c;--p-danger-soft:#fee2e2;--p-info:#1d4ed8;--p-info-soft:#dbeafe;--p-verified:#0a66c2;--p-verified-soft:#e3f0ff;--p-expert:#7c3aed;--p-expert-soft:#ede9fe;--p-ring:rgba(11,92,255,.3);--p-ring-strong:rgba(11,92,255,.6);--vp-accent:#1d4ed8;--vp-accent-dark:#1e40af;--vp-accent-soft:#e3e9fb;--vp-accent-bg:#071426;--vp-bg:#f8f6f1;--vp-surface:#fff;--vp-surface-soft:#f0ede6;--vp-border:#d6cfc0;--vp-border-soft:#e7e1d8;--vp-quiz-border:#e7e1d8;--vp-ink:#151515;--vp-headline:#111827;--vp-text-muted:#57606b;--vp-text-soft:#57606b;--vp-navy:#071426;--vp-verified:#0f766e;--vp-verified-soft:#d6edea;--vp-success:#15803d;--vp-success-soft:#e8f5ec;--vp-success-ink:#14532d;--vp-success-border:#b9dfc4;--vp-danger:#c2413a;--vp-danger-soft:#f6e5e4;--vp-danger-ink:#8b2a25;--vp-danger-border:#eccac7;--vp-success-bg:#ecfdf5;--vp-warn-bg:#fbf4e2;--vp-warn-ink:#b8892d;--vp-warn-border:#e6d8ae;--vp-intent-question:#7c3aed;--vp-intent-question-soft:#ede9fe;--vp-intent-add:#2563eb;--vp-intent-add-soft:#dbeafe;--vp-intent-take:#0f766e;--vp-intent-take-soft:#ccfbf1;--r-sm:6px;--r-md:10px;--r-lg:14px;--r-xl:20px;--r-pill:999px;--s0:0;--s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:20px;--s6:24px;--s7:32px;--s8:40px;--s9:56px;--s10:72px}.vp-dark{background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}.vp-dark a{color:var(--accent);text-decoration:underline}.vp-dark a:hover{opacity:.85}.vp-dark ::selection{background:rgba(0,0,0,.15)}@keyframes vpFadeIn{0%{opacity:0}to{opacity:1}}@keyframes vpSpin{to{transform:rotate(1turn)}}@keyframes vpPulse{0%,to{opacity:.3;transform:scale(.8)}50%{opacity:1;transform:scale(1)}}@keyframes kidStreakPulse{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}.kid-streak-pulse{animation:kidStreakPulse 2.4s ease-in-out infinite;transform-origin:center;display:inline-block}@keyframes kidCelebrateRise{0%{opacity:0;transform:translateY(6px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.kid-celebrate-rise{animation:kidCelebrateRise .22s ease-out both}input,select,textarea{color:var(--text)}input::placeholder,textarea::placeholder{color:var(--muted)}:focus-visible{outline:2px solid var(--vp-ink);outline-offset:2px}body{overflow-x:hidden;background:var(--vp-bg)}html{scroll-behavior:smooth}.vp-card-hoverable{transition:transform .18s ease-out,box-shadow .18s ease-out;will-change:transform}.vp-card-hoverable:hover{transform:translateY(-2px);box-shadow:0 10px 24px var(--vp-shadow-lg)}@media (prefers-reduced-motion:reduce){.vp-card-hoverable:hover{transform:none}}.vp-skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}.vp-skip-link:focus{position:fixed;left:8px;top:8px;width:auto;height:auto;padding:8px 12px;background:#111;color:#fff;text-decoration:none;font-weight:600;z-index:100000;border-radius:var(--r-sm)}@keyframes vpShimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.vp-skeleton{background:linear-gradient(90deg,var(--vp-surface) 25%,var(--vp-border-soft) 50%,var(--vp-surface) 75%);background-size:200% 100%;animation:vpShimmer 1.4s ease-in-out infinite;border-radius:var(--r-sm);display:block}@media (prefers-reduced-motion:reduce){.vp-skeleton{animation:none}}.redesign-stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}.redesign-stat-value{font-size:36px}@media (max-width:859px){.redesign-stat-grid{grid-template-columns:repeat(2,1fr)}.redesign-stat-value{font-size:28px}}@media (max-width:768px){[contenteditable=true],input,select,textarea{font-size:16px!important}}.vp-avatar-editor-grid{grid-template-columns:1fr}@media (min-width:520px){.vp-avatar-editor-grid{grid-template-columns:min(160px,40vw) 1fr}}.vp-comment-html,[data-comment-editor]{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;font-feature-settings:"kern" 1,"liga" 1}.vp-comment-html p{margin:0 0 .6em}.vp-comment-html p:last-child{margin-bottom:0}.vp-comment-html a{color:inherit;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.18em;text-decoration-color:var(--p-border);transition:text-decoration-color .14s ease}.vp-comment-html a:hover{text-decoration-color:var(--p-ink)}.vp-comment-html em,.vp-comment-html i{font-style:italic}.vp-comment-html b,.vp-comment-html strong{font-weight:600}.vp-comment-card-overflow:hover{background:var(--vp-surface-soft)}.vp-comment-card-overflow:focus-visible{outline:2px solid var(--vp-accent);outline-offset:2px}.vp-comment-card-action:focus-visible{outline:2px solid var(--vp-accent);outline-offset:2px}.vp-comment-card-timestamp:focus-visible{outline:2px solid var(--vp-accent);outline-offset:2px;border-radius:var(--r-sm)}.vp-comment-card-intent-chip:focus-visible{outline:2px solid currentColor;outline-offset:2px}@media (pointer:coarse){.vp-comment-card-action{min-height:40px!important;padding-top:10px!important;padding-bottom:10px!important}.vp-comment-card-overflow{min-width:44px!important;min-height:44px!important}.vp-comment-card-timestamp{padding-top:8px!important;padding-bottom:8px!important;margin-top:-8px!important;margin-bottom:-8px!important}}.vp-comment-html blockquote,[data-comment-editor] blockquote{border-left:3px solid var(--border,#e5e5e5);margin:0 0 10px;padding:3px 0 3px 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