@property --eng-ring-pct{syntax: "<number>"; initial-value: 0; inherits: false;}@property --eng-progress-pct{syntax: "<number>"; initial-value: 0; inherits: false;}@property --eng-meter-pct{syntax: "<number>"; initial-value: 0; inherits: false;}:root{--eng-surface: var(--card, var(--surface, var(--bg, Canvas)));--eng-surface-2: var(--card-hi, var(--surface-2, var(--surface-lo, color-mix(in srgb, Canvas 94%, CanvasText))));--eng-surface-3: var(--overlay, var(--surface-3, color-mix(in srgb, Canvas 89%, CanvasText)));--eng-overlay: var(--overlay, var(--popover, var(--card, Canvas)));--eng-inset: var(--inset, var(--surface-lo, var(--well, color-mix(in srgb, Canvas 86%, CanvasText))));--eng-scrim: var(--scrim, color-mix(in srgb, CanvasText 58%, transparent));--eng-fg: var(--text, var(--fg, var(--fg-default, CanvasText)));--eng-fg-2: var(--text-2, var(--fg-muted, var(--muted, GrayText)));--eng-fg-3: var(--text-3, var(--fg-subtle, var(--fg-faint, color-mix(in srgb, GrayText 72%, Canvas))));--eng-fg-on-accent: var(--on-accent, var(--accent-fg, var(--accent-contrast, AccentColorText)));--eng-line: var(--border, var(--line, var(--rule, ButtonBorder)));--eng-line-hi: var(--border-hi, var(--line-hi, var(--line-strong, color-mix(in srgb, ButtonBorder 55%, CanvasText))));--eng-focus: var(--focus, var(--focus-ring, var(--indigo, var(--accent, Highlight))));--eng-accent: var(--indigo, var(--accent, var(--core-purple, var(--brand, AccentColor))));--eng-accent-2: var(--violet, var(--accent-2, var(--accent-strong, var(--dark-purple, AccentColor))));--eng-accent-soft: var(--indigo-lo, var(--accent-soft, color-mix(in srgb, var(--eng-accent) 14%, transparent)));--eng-ok: var(--emerald, var(--success, var(--ok, var(--positive, LinkText))));--eng-ok-soft: var(--emerald-lo, var(--success-soft, color-mix(in srgb, var(--eng-ok) 14%, transparent)));--eng-warn: var(--gold, var(--warn, var(--warning, var(--amber, Mark))));--eng-warn-soft: var(--gold-lo, var(--warn-soft, color-mix(in srgb, var(--eng-warn) 16%, transparent)));--eng-danger: var(--error, var(--danger, var(--negative, var(--critical, ActiveText))));--eng-danger-soft: var(--error-lo, var(--danger-soft, color-mix(in srgb, var(--eng-danger) 14%, transparent)));--eng-info: var(--info, var(--indigo-hi, var(--blue, Highlight)));--eng-info-soft: var(--info-soft, color-mix(in srgb, var(--eng-info) 13%, transparent));--eng-gold: var(--gold, var(--amber, var(--gold-hi, Mark)));--eng-gold-soft: var(--gold-lo, color-mix(in srgb, var(--eng-gold) 16%, transparent));--eng-mastered: var(--eng-ok);--eng-inprogress: var(--eng-accent);--eng-available: var(--eng-info);--eng-locked: var(--eng-fg-3);--eng-decay-0: color-mix(in oklab, var(--eng-ok) 100%, var(--eng-danger) 0%);--eng-decay-1: color-mix(in oklab, var(--eng-ok) 74%, var(--eng-danger) 26%);--eng-decay-2: color-mix(in oklab, var(--eng-ok) 50%, var(--eng-danger) 50%);--eng-decay-3: color-mix(in oklab, var(--eng-ok) 26%, var(--eng-danger) 74%);--eng-decay-4: color-mix(in oklab, var(--eng-ok) 0%, var(--eng-danger) 100%);--eng-confident-wrong: color-mix(in oklab, var(--eng-danger) 86%, CanvasText 14%);--eng-confident-wrong-soft: color-mix(in srgb, var(--eng-confident-wrong) 22%, transparent);--eng-font: var(--font-body, var(--font-sans, system-ui, sans-serif));--eng-font-display: var(--font-display, var(--font-head, var(--font-body, system-ui, sans-serif)));--eng-font-mono: var(--font-mono, var(--font-code, ui-monospace, SFMono-Regular, monospace));--eng-t-xs: clamp(.6875rem, .665rem + .11vw, .75rem);--eng-t-sm: clamp(.8125rem, .784rem + .14vw, .875rem);--eng-t-base: clamp(.9375rem, .909rem + .14vw, 1rem);--eng-t-lg: clamp(1.0625rem, 1.006rem + .28vw, 1.1875rem);--eng-t-xl: clamp(1.25rem, 1.136rem + .57vw, 1.5rem);--eng-t-2xl: clamp(1.5rem, 1.216rem + 1.42vw, 2.125rem);--eng-s-1: .25rem;--eng-s-2: .5rem;--eng-s-3: .75rem;--eng-s-4: 1rem;--eng-s-5: 1.5rem;--eng-s-6: 2rem;--eng-s-7: 3rem;--eng-s-8: 4rem;--eng-r-sm: var(--radius-sm, 6px);--eng-r-md: var(--radius, 10px);--eng-r-lg: var(--radius-lg, 14px);--eng-r-xl: var(--radius-xl, 18px);--eng-r-full: 999px;--eng-shadow-1: var(--shadow-sm, none);--eng-shadow-2: var(--shadow-md, var(--shadow-lg, none));--eng-shadow-3: var(--shadow-xl, var(--shadow-lg, none));--eng-dur-fast: var(--dur-fast, .11s);--eng-dur: var(--dur-hover, var(--dur, .18s));--eng-dur-slow: var(--dur-panel, var(--dur-slow, .26s));--eng-ease: var(--ease-out, cubic-bezier(.22,1,.36,1))}.eng-card,.eng-panel{background:var(--eng-surface);color:var(--eng-fg);border:1px solid var(--eng-line);border-radius:var(--eng-r-lg);font-family:var(--eng-font);font-size:var(--eng-t-base)}.eng-card{padding:var(--eng-s-4);box-shadow:var(--eng-shadow-1)}.eng-panel{padding:var(--eng-s-5);background:var(--eng-surface-2);box-shadow:var(--eng-shadow-2)}.eng-inset{background:var(--eng-inset);color:var(--eng-fg);border:1px solid var(--eng-line);border-radius:var(--eng-r-md);padding:var(--eng-s-3)}.eng-stack{display:flex;flex-direction:column;gap:var(--eng-gap, var(--eng-s-3))}.eng-row{display:flex;align-items:center;flex-wrap:wrap;gap:var(--eng-gap, var(--eng-s-2))}.eng-grid{display:grid;gap:var(--eng-gap, var(--eng-s-4));grid-template-columns:repeat(auto-fit,minmax(var(--eng-col, 16rem),1fr))}.eng-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--eng-s-2);min-height:36px;padding:var(--eng-s-2) var(--eng-s-4);font:600 var(--eng-t-sm) / 1.2 var(--eng-font);color:var(--eng-fg);background:var(--eng-surface-2);border:1px solid var(--eng-line-hi);border-radius:var(--eng-r-md);cursor:pointer;transition:background var(--eng-dur) var(--eng-ease),border-color var(--eng-dur) var(--eng-ease),transform var(--eng-dur-fast) var(--eng-ease)}.eng-btn:hover:not(:disabled){background:var(--eng-surface-3);border-color:var(--eng-accent)}.eng-btn:active:not(:disabled){transform:translateY(1px)}.eng-btn:disabled{color:var(--eng-locked);cursor:not-allowed;opacity:.6}.eng-btn--primary{background:var(--eng-accent);color:var(--eng-fg-on-accent);border-color:var(--eng-accent)}.eng-btn--primary:hover:not(:disabled){background:var(--eng-accent-2);border-color:var(--eng-accent-2)}.eng-btn--ghost{background:transparent;border-color:transparent;color:var(--eng-fg-2)}.eng-btn--ghost:hover:not(:disabled){background:var(--eng-accent-soft);color:var(--eng-fg)}.eng-btn--danger{background:var(--eng-danger-soft);color:var(--eng-danger);border-color:var(--eng-danger)}.eng-btn--sm{min-height:32px;padding:var(--eng-s-1) var(--eng-s-3);font-size:var(--eng-t-xs)}.eng-chip{display:inline-flex;align-items:center;gap:var(--eng-s-1);min-height:32px;padding:var(--eng-s-1) var(--eng-s-3);font:500 var(--eng-t-xs) / 1.3 var(--eng-font);color:var(--eng-fg-2);background:var(--eng-surface-2);border:1px solid var(--eng-line);border-radius:var(--eng-r-full);transition:background var(--eng-dur) var(--eng-ease),color var(--eng-dur) var(--eng-ease)}.eng-chip[aria-pressed=true],.eng-chip--on{background:var(--eng-accent-soft);color:var(--eng-accent);border-color:var(--eng-accent)}.eng-badge{display:inline-flex;align-items:center;gap:var(--eng-s-1);min-height:20px;padding:0 var(--eng-s-2);letter-spacing:.02em;font:600 var(--eng-t-xs) / 1.4 var(--eng-font);color:var(--eng-fg-2);background:var(--eng-surface-3);border-radius:var(--eng-r-sm)}.eng-badge--ok{color:var(--eng-ok);background:var(--eng-ok-soft)}.eng-badge--warn{color:var(--eng-warn);background:var(--eng-warn-soft)}.eng-badge--danger{color:var(--eng-danger);background:var(--eng-danger-soft)}.eng-badge--gold{color:var(--eng-gold);background:var(--eng-gold-soft)}.eng-kbd{display:inline-block;min-width:1.6em;padding:.1em .45em;text-align:center;font:500 var(--eng-t-xs) / 1.5 var(--eng-font-mono);color:var(--eng-fg);background:var(--eng-surface-2);border:1px solid var(--eng-line-hi);border-bottom-width:2px;border-radius:var(--eng-r-sm)}.eng-input{width:100%;min-height:36px;padding:var(--eng-s-2) var(--eng-s-3);font:400 var(--eng-t-sm) / 1.4 var(--eng-font);color:var(--eng-fg);background:var(--eng-surface);border:1px solid var(--eng-line-hi);border-radius:var(--eng-r-md);transition:border-color var(--eng-dur) var(--eng-ease)}.eng-input::-moz-placeholder{color:var(--eng-fg-3)}.eng-input::placeholder{color:var(--eng-fg-3)}.eng-input:hover{border-color:var(--eng-accent)}.eng-input--mono{font-family:var(--eng-font-mono)}.eng-progress{position:relative;overflow:hidden;block-size:8px;inline-size:100%;background:var(--eng-inset);border-radius:var(--eng-r-full)}.eng-progress__fill{display:block;block-size:100%;border-radius:inherit;inline-size:calc(clamp(0,var(--eng-progress-pct, 0),100)*1%);background:var(--eng-fill, var(--eng-accent));transition:inline-size var(--eng-dur-slow) var(--eng-ease)}.eng-meter{display:flex;align-items:center;gap:var(--eng-s-2);font:500 var(--eng-t-xs) / 1 var(--eng-font-mono);color:var(--eng-fg-2)}.eng-meter:before{content:"";flex:1 1 auto;block-size:4px;border-radius:var(--eng-r-full);background:linear-gradient(to right,var(--eng-fill, var(--eng-accent)) calc(clamp(0,var(--eng-meter-pct, 0),100)*1%),var(--eng-line) 0)}.eng-ring{position:relative;display:grid;place-items:center;inline-size:var(--eng-ring-size, 44px);block-size:var(--eng-ring-size, 44px);border-radius:var(--eng-r-full);color:var(--eng-fg);font:600 var(--eng-t-xs) / 1 var(--eng-font-mono);background:conic-gradient(from -90deg,var(--eng-ring-color, var(--eng-accent)) calc(clamp(0,var(--eng-ring-pct, 0),100)*1%),var(--eng-line) 0);transition:--eng-ring-pct var(--eng-dur-slow) var(--eng-ease)}.eng-ring:before{content:"";position:absolute;inset:var(--eng-ring-w, 4px);border-radius:var(--eng-r-full);background:var(--eng-surface)}.eng-ring>*{position:relative}.eng-opt{display:flex;align-items:flex-start;gap:var(--eng-s-3);inline-size:100%;min-height:44px;text-align:left;cursor:pointer;padding:var(--eng-s-3) var(--eng-s-4);font:400 var(--eng-t-sm) / 1.45 var(--eng-font);color:var(--eng-fg);background:var(--eng-surface);border:1px solid var(--eng-line);border-radius:var(--eng-r-md);transition:background var(--eng-dur) var(--eng-ease),border-color var(--eng-dur) var(--eng-ease)}.eng-opt:hover:not(:disabled){background:var(--eng-surface-2);border-color:var(--eng-line-hi)}.eng-opt--selected{background:var(--eng-accent-soft);border-color:var(--eng-accent)}.eng-opt--correct{background:var(--eng-ok-soft);border-color:var(--eng-ok)}.eng-opt--wrong{background:var(--eng-danger-soft);border-color:var(--eng-danger)}.eng-opt--danger{background:var(--eng-confident-wrong-soft);color:var(--eng-confident-wrong);border-color:var(--eng-confident-wrong);font-weight:600}.eng-opt--correct:after,.eng-opt--wrong:after,.eng-opt--danger:after{margin-inline-start:auto;font-family:var(--eng-font-mono);font-weight:700}.eng-opt--correct:after{content:"OK";color:var(--eng-ok)}.eng-opt--wrong:after{content:"X";color:var(--eng-danger)}.eng-opt--danger:after{content:"!!";color:var(--eng-confident-wrong)}.eng-term{padding:var(--eng-s-3) var(--eng-s-4);overflow-x:auto;font:400 var(--eng-t-sm) / 1.6 var(--eng-font-mono);color:var(--eng-fg);background:var(--eng-inset);border:1px solid var(--eng-line-hi);border-radius:var(--eng-r-md)}.eng-term__line{display:block;white-space:pre;-moz-tab-size:2;-o-tab-size:2;tab-size:2}.eng-term__line[data-prompt]:before{content:attr(data-prompt) " ";color:var(--eng-fg-3)}.eng-term__caret{display:inline-block;inline-size:.55em;block-size:1.1em;vertical-align:text-bottom;background:var(--eng-accent);animation:eng-blink 1.06s steps(2,jump-none) infinite}.eng-term__tok{border-radius:2px;padding:0 .12em}.eng-term__tok--ok{color:var(--eng-ok);background:var(--eng-ok-soft)}.eng-term__tok--missing{color:var(--eng-warn);background:var(--eng-warn-soft);-webkit-text-decoration:underline dotted;text-decoration:underline dotted}.eng-term__tok--extra{color:var(--eng-fg-3);text-decoration:line-through}.eng-term__tok--wrong{color:var(--eng-danger);background:var(--eng-danger-soft);-webkit-text-decoration:underline wavy;text-decoration:underline wavy}.eng-live{position:absolute;inline-size:1px;block-size:1px;margin:-1px;padding:0;border:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.eng-live:focus-within{position:static;inline-size:auto;block-size:auto;margin:0;padding:var(--eng-s-2);overflow:visible;clip-path:none;white-space:normal;background:var(--eng-overlay);border:1px solid var(--eng-focus)}.eng-toast{display:flex;align-items:center;gap:var(--eng-s-3);padding:var(--eng-s-3) var(--eng-s-4);font:500 var(--eng-t-sm) / 1.4 var(--eng-font);color:var(--eng-fg);background:var(--eng-overlay);border:1px solid var(--eng-line-hi);border-radius:var(--eng-r-md);box-shadow:var(--eng-shadow-3)}@keyframes eng-enter{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes eng-pop{0%{transform:scale(.94)}60%{transform:scale(1.04)}to{transform:scale(1)}}@keyframes eng-shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-4px)}40%,80%{transform:translate(4px)}}@keyframes eng-pulse{0%,to{box-shadow:0 0 0 0 var(--eng-pulse-color, var(--eng-accent-soft))}50%{box-shadow:0 0 0 6px transparent}}@keyframes eng-count{0%{transform:translateY(.35em);opacity:0}to{transform:none;opacity:1}}@keyframes eng-blink{0%{opacity:1}50%{opacity:0}to{opacity:1}}.eng-enter{animation:eng-enter var(--eng-dur-slow) var(--eng-ease) both;animation-delay:var(--eng-delay, 0ms);opacity:clamp(.001,var(--view-percent-visible, 1),1)}.eng-pop{animation:eng-pop var(--eng-dur) var(--eng-ease) both}.eng-shake{animation:eng-shake var(--eng-dur-slow) var(--eng-ease) both}.eng-pulse{animation:eng-pulse calc(var(--eng-dur-slow) * 5) var(--eng-ease) infinite}.eng-count{display:inline-block;font-variant-numeric:tabular-nums;animation:eng-count var(--eng-dur) var(--eng-ease) both}.eng-btn:focus-visible,.eng-chip:focus-visible,.eng-input:focus-visible,.eng-opt:focus-visible,.eng-card:focus-visible,.eng-panel:focus-visible,.eng-ring:focus-visible,.eng-term:focus-visible,.eng-toast:focus-visible{outline:2px solid var(--eng-focus);outline-offset:2px}.eng-input:focus-visible{border-color:var(--eng-focus)}@media(prefers-reduced-motion:reduce){:root{--eng-dur-fast: 1ms;--eng-dur: 1ms;--eng-dur-slow: 1ms}[class^=eng-],[class*=" eng-"],[class^=eng-]:before,[class*=" eng-"]:before,[class^=eng-]:after,[class*=" eng-"]:after{animation:none!important;transition-duration:1ms!important;transition-delay:0ms!important;scroll-behavior:auto!important}.eng-enter{opacity:1;transform:none}.eng-pop,.eng-shake,.eng-count{transform:none}.eng-term__caret{opacity:1}}@media(forced-colors:active){.eng-card,.eng-panel,.eng-inset,.eng-btn,.eng-chip,.eng-input,.eng-opt,.eng-term,.eng-toast,.eng-kbd,.eng-progress,.eng-ring,.eng-badge{border:1px solid ButtonBorder}.eng-opt--selected,.eng-opt--correct,.eng-opt--wrong,.eng-opt--danger{border-color:Highlight;border-width:2px}.eng-btn--primary{background:ButtonFace;color:ButtonText}.eng-progress__fill,.eng-term__caret{background:Highlight;forced-color-adjust:none}}.eng-quiz,.eng-rq{display:flex;flex-direction:column;gap:var(--eng-s-4);font-family:var(--eng-font);color:var(--eng-fg)}.eng-quiz__title,.eng-rq__title{margin:0;font:600 var(--eng-t-xl) / 1.25 var(--eng-font-display);color:var(--eng-fg)}.eng-quiz__q{margin:0;font:600 var(--eng-t-lg) / 1.4 var(--eng-font-display);color:var(--eng-fg);text-wrap:pretty}.eng-quiz__meta,.eng-rq__meta{display:flex;flex-wrap:wrap;align-items:center;gap:var(--eng-s-2);font:500 var(--eng-t-xs) / 1.4 var(--eng-font);color:var(--eng-fg-2)}.eng-quiz__bar,.eng-rq__bar{flex:1 1 8rem;min-inline-size:6rem}.eng-quiz__hint,.eng-rq__hint{margin:0;font:400 var(--eng-t-xs) / 1.5 var(--eng-font);color:var(--eng-fg-3)}.eng-quiz__opts{display:flex;flex-direction:column;gap:var(--eng-s-2);margin:0;padding:0;border:0}.eng-opt__key{flex:0 0 auto}.eng-opt__text{flex:1 1 auto}.eng-conf{display:flex;flex-direction:column;gap:var(--eng-s-3);padding:var(--eng-s-4);background:var(--eng-surface-2);border:1px solid var(--eng-line-hi);border-radius:var(--eng-r-lg)}.eng-conf__ask{margin:0;font:600 var(--eng-t-base) / 1.4 var(--eng-font);color:var(--eng-fg)}.eng-conf__why{margin:0;font:400 var(--eng-t-xs) / 1.5 var(--eng-font);color:var(--eng-fg-2)}.eng-conf__grid{display:grid;gap:var(--eng-s-2);grid-template-columns:repeat(auto-fit,minmax(9rem,1fr))}.eng-conf__btn{display:flex;flex-direction:column;align-items:flex-start;gap:var(--eng-s-1);min-block-size:64px;padding:var(--eng-s-2) var(--eng-s-3);text-align:start;cursor:pointer;color:var(--eng-fg);background:var(--eng-surface);border:1px solid var(--eng-line-hi);border-radius:var(--eng-r-md);transition:background var(--eng-dur) var(--eng-ease),border-color var(--eng-dur) var(--eng-ease)}.eng-conf__btn:hover:not(:disabled){background:var(--eng-accent-soft);border-color:var(--eng-accent)}.eng-conf__btn:focus-visible{outline:2px solid var(--eng-focus);outline-offset:2px}.eng-conf__btn[aria-checked=true]{background:var(--eng-accent-soft);border-color:var(--eng-accent)}.eng-conf__label{display:flex;align-items:center;gap:var(--eng-s-2);font:600 var(--eng-t-sm) / 1.2 var(--eng-font)}.eng-conf__cost{font:500 var(--eng-t-xs) / 1.3 var(--eng-font-mono);color:var(--eng-fg-2)}.eng-conf__btn--risk .eng-conf__cost{color:var(--eng-confident-wrong)}.eng-reveal{display:flex;flex-direction:column;gap:var(--eng-s-3)}.eng-reveal .eng-opt{cursor:default}.eng-verdict{display:flex;flex-direction:column;gap:var(--eng-s-2);padding:var(--eng-s-3) var(--eng-s-4);background:var(--eng-surface-2);border:1px solid var(--eng-line-hi);border-radius:var(--eng-r-md)}.eng-verdict--ok{background:var(--eng-ok-soft);border-color:var(--eng-ok)}.eng-verdict--known{background:var(--eng-warn-soft);border-color:var(--eng-warn)}.eng-verdict--danger{background:var(--eng-confident-wrong-soft);border-color:var(--eng-confident-wrong)}.eng-verdict__head{display:flex;flex-wrap:wrap;align-items:center;gap:var(--eng-s-2);margin:0;font:700 var(--eng-t-base) / 1.3 var(--eng-font-display);color:var(--eng-fg)}.eng-verdict--danger .eng-verdict__head{color:var(--eng-confident-wrong);letter-spacing:.01em}.eng-verdict__msg{margin:0;font:500 var(--eng-t-sm) / 1.5 var(--eng-font);color:var(--eng-fg)}.eng-verdict__why{margin:0;font:400 var(--eng-t-sm) / 1.6 var(--eng-font);color:var(--eng-fg-2)}.eng-score{display:flex;flex-wrap:wrap;align-items:baseline;gap:var(--eng-s-3)}.eng-score__pct{font:700 var(--eng-t-2xl) / 1 var(--eng-font-display);font-variant-numeric:tabular-nums;color:var(--eng-score-color, var(--eng-fg))}.eng-score--pass{--eng-score-color: var(--eng-ok)}.eng-score--flagged{--eng-score-color: var(--eng-warn)}.eng-score--fail{--eng-score-color: var(--eng-danger)}.eng-score__label{font:500 var(--eng-t-sm) / 1.4 var(--eng-font);color:var(--eng-fg-2)}.eng-cal{inline-size:100%;border-collapse:collapse;font:400 var(--eng-t-sm) / 1.4 var(--eng-font);color:var(--eng-fg)}.eng-cal caption{padding-block-end:var(--eng-s-2);text-align:start;font:600 var(--eng-t-sm) / 1.4 var(--eng-font);color:var(--eng-fg)}.eng-cal th,.eng-cal td{padding:var(--eng-s-2) var(--eng-s-2);text-align:start;border-block-end:1px solid var(--eng-line)}.eng-cal thead th{font:600 var(--eng-t-xs) / 1.4 var(--eng-font);color:var(--eng-fg-2);letter-spacing:.03em;text-transform:uppercase}.eng-cal td[data-num]{font-family:var(--eng-font-mono);font-variant-numeric:tabular-nums}.eng-cal tr[data-verdict=no-data] td{color:var(--eng-fg-3)}.eng-cal tr[data-verdict=overconfident] 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