:root{color-scheme:light;--color-canvas: #f5f5f5;--color-paper: #ffffff;--color-surface-alt: #fafafa;--color-ink: #0a0a0a;--color-ink-soft: #171717;--color-mid-gray: #737373;--color-hairline: #e5e5e5;--color-chart-gray: #b4b4b4;--color-ember: #e7000b;--font-geist: "Geist", "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;--text-caption: 12px;--leading-caption: 1.33;--tracking-caption: .6px;--text-body: 14px;--leading-body: 1.43;--text-body-lg: 16px;--leading-body-lg: 1.5;--text-subheading: 18px;--leading-subheading: 1.56;--text-heading-sm: 24px;--leading-heading-sm: 1.33;--tracking-heading-sm: -.6px;--text-heading: 30px;--leading-heading: 1.2;--tracking-heading: -.75px;--text-heading-lg: 36px;--leading-heading-lg: 1.11;--tracking-heading-lg: -.9px;--text-display: 48px;--leading-display: 1.1;--tracking-display: -2.4px;--font-weight-regular: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--spacing-4: 4px;--spacing-8: 8px;--spacing-12: 12px;--spacing-16: 16px;--spacing-20: 20px;--spacing-24: 24px;--spacing-48: 48px;--radius-small: 6px;--radius-nested: 10px;--radius-interactive: 18px;--radius-container: 24px;--shadow-subtle: 0 0 0 1px rgba(23, 23, 23, .05), 0 1px 3px rgba(0, 0, 0, .1), 0 1px 2px -1px rgba(0, 0, 0, .1);--page-width: 880px;--card-padding: var(--spacing-20);--element-gap: var(--spacing-8)}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){color-scheme:dark;--color-canvas: #0f0f11;--color-paper: #17171a;--color-surface-alt: #131316;--color-ink: #ededef;--color-ink-soft: #d4d4d8;--color-mid-gray: #8f8f98;--color-hairline: #2c2c31;--color-chart-gray: #4a4a52;--color-ember: #ff6b6b;--shadow-subtle: 0 0 0 1px rgba(0, 0, 0, .4), 0 1px 3px rgba(0, 0, 0, .5), 0 1px 2px -1px rgba(0, 0, 0, .5)}}:root[data-theme=dark]{color-scheme:dark;--color-canvas: #0f0f11;--color-paper: #17171a;--color-surface-alt: #131316;--color-ink: #ededef;--color-ink-soft: #d4d4d8;--color-mid-gray: #8f8f98;--color-hairline: #2c2c31;--color-chart-gray: #4a4a52;--color-ember: #ff6b6b;--shadow-subtle: 0 0 0 1px rgba(0, 0, 0, .4), 0 1px 3px rgba(0, 0, 0, .5), 0 1px 2px -1px rgba(0, 0, 0, .5)}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--color-canvas);color:var(--color-ink);font-family:var(--font-geist);font-size:var(--text-body);line-height:var(--leading-body);font-weight:var(--font-weight-regular);font-feature-settings:"ss01" on,"cv11" on;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3{margin:0;font-weight:var(--font-weight-semibold)}h1{font-size:var(--text-heading);line-height:var(--leading-heading);letter-spacing:var(--tracking-heading)}h2{font-size:var(--text-heading-sm);line-height:var(--leading-heading-sm);letter-spacing:var(--tracking-heading-sm)}h3{font-size:var(--text-subheading);line-height:var(--leading-subheading)}p{margin:0}ul{margin:0;padding:0;list-style:none}hr{height:0;margin:var(--spacing-20) 0;border:0;border-top:1px solid var(--color-hairline)}img,video{max-width:100%;height:auto}code,kbd,pre{font-family:var(--font-mono);font-size:.9em}button,input,select,textarea{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--color-ink);outline-offset:2px}::selection{background:var(--color-ink);color:var(--color-paper)}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.page{max-width:var(--page-width);margin:0 auto;padding:var(--spacing-48) var(--spacing-20);display:flex;flex-direction:column;gap:var(--spacing-24)}.page--narrow{max-width:420px}.page__header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--spacing-16);flex-wrap:wrap}.page__eyebrow{font-size:var(--text-caption);line-height:var(--leading-caption);letter-spacing:var(--tracking-caption);text-transform:uppercase;color:var(--color-mid-gray);margin-bottom:var(--spacing-4)}.page__title{font-size:var(--text-heading-lg);line-height:var(--leading-heading-lg);letter-spacing:var(--tracking-heading-lg)}.stack{display:flex;flex-direction:column;gap:var(--spacing-16)}.row{display:flex;align-items:center;gap:var(--element-gap);flex-wrap:wrap}.card{background:var(--color-paper);border:1px solid var(--color-hairline);border-radius:var(--radius-container);box-shadow:var(--shadow-subtle);padding:var(--card-padding)}.card__head{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-12);margin-bottom:var(--spacing-16)}.card__title{font-size:var(--text-body-lg);line-height:var(--leading-body-lg);font-weight:var(--font-weight-medium)}.button{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-8);min-height:36px;padding:0 var(--spacing-12);border:1px solid transparent;border-radius:var(--radius-interactive);font-size:var(--text-body);font-weight:var(--font-weight-medium);line-height:1;white-space:nowrap;cursor:pointer;background:none;color:var(--color-ink);transition:background-color .15s ease,color .15s ease,border-color .15s ease}.button:disabled{cursor:not-allowed;background:var(--color-canvas);color:var(--color-mid-gray);border-color:transparent}.button--primary{background:var(--color-ink);color:var(--color-surface-alt)}.button--primary:hover:not(:disabled){background:var(--color-ink-soft)}.button--secondary{background:var(--color-canvas);color:var(--color-ink)}.button--secondary:hover:not(:disabled){background:var(--color-hairline)}.button--outline{border-color:var(--color-hairline);color:var(--color-ink)}.button--outline:hover:not(:disabled){background:var(--color-canvas)}.button--destructive{color:var(--color-ember)}.button--destructive:hover:not(:disabled){background:var(--color-canvas)}.badge{display:inline-flex;align-items:center;gap:var(--spacing-4);padding:2px var(--spacing-8);border:1px solid transparent;border-radius:var(--radius-interactive);font-size:var(--text-caption);line-height:var(--leading-caption);font-weight:var(--font-weight-medium);white-space:nowrap}.badge--solid{background:var(--color-ink-soft);color:var(--color-surface-alt)}.badge--soft{background:var(--color-canvas);color:var(--color-ink-soft)}.badge--outline{border-color:var(--color-hairline);color:var(--color-ink)}.badge__value{font-weight:var(--font-weight-semibold);font-variant-numeric:tabular-nums}.field{display:flex;flex-direction:column;gap:var(--spacing-8)}.field__label{font-size:var(--text-body);font-weight:var(--font-weight-medium);color:var(--color-ink)}.field__required{color:var(--color-ember)}.input,.select,.textarea{width:100%;background:var(--color-canvas);color:var(--color-ink);border:1px solid transparent;border-radius:var(--radius-interactive);padding:var(--spacing-8) var(--spacing-12);font-size:var(--text-body);line-height:var(--leading-body)}.input::placeholder,.textarea::placeholder{color:var(--color-mid-gray)}.input:focus,.select:focus,.textarea:focus{outline:none;background:var(--color-paper);border-color:var(--color-hairline)}.input:focus-visible,.select:focus-visible,.textarea:focus-visible{outline:none;border-color:var(--color-ink)}.textarea{border-radius:var(--radius-nested);min-height:84px;resize:vertical}.select{border-radius:var(--radius-interactive);cursor:pointer}.choice{display:flex;align-items:flex-start;gap:var(--spacing-8);font-size:var(--text-body);cursor:pointer}.choice input{margin:3px 0 0;accent-color:var(--color-ink);flex-shrink:0}fieldset.card{border:1px solid var(--color-hairline);min-width:0}fieldset.card legend{padding:0}.muted{color:var(--color-mid-gray)}.caption{font-size:var(--text-caption);line-height:var(--leading-caption);letter-spacing:var(--tracking-caption);text-transform:uppercase;color:var(--color-mid-gray)}.hint{font-size:var(--text-caption);line-height:var(--leading-caption);color:var(--color-mid-gray)}.field+.hint{margin-top:calc(var(--spacing-4) * -1)}.alert{background:var(--color-paper);border:1px solid var(--color-ember);border-radius:var(--radius-nested);padding:var(--spacing-12) var(--spacing-16);color:var(--color-ember);font-size:var(--text-body)}.notice{background:var(--color-surface-alt);border:1px solid var(--color-hairline);border-radius:var(--radius-nested);padding:var(--spacing-12) var(--spacing-16);color:var(--color-ink-soft);font-size:var(--text-body)}.study-counts{display:flex;gap:var(--element-gap);flex-wrap:wrap}.card-face{font-size:var(--text-body-lg);line-height:var(--leading-body-lg);color:var(--color-ink);overflow-wrap:break-word}.card-face--question{font-size:var(--text-heading-sm);line-height:var(--leading-heading-sm);letter-spacing:var(--tracking-heading-sm);font-weight:var(--font-weight-semibold)}.card-face--answer{margin-top:var(--spacing-16)}.study-card__actions{margin-top:var(--spacing-20)}.ratings{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--element-gap);margin-top:var(--spacing-20)}.ratings .button{flex-direction:column;gap:2px;min-height:52px;padding:var(--spacing-8)}.rating__interval{font-size:var(--text-caption);font-weight:var(--font-weight-regular);color:var(--color-mid-gray);font-variant-numeric:tabular-nums}.button--primary:not(:disabled) .rating__interval{color:var(--color-hairline)}.rating__separator{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--spacing-12)}.stat{display:flex;flex-direction:column;gap:var(--spacing-4)}.stat__value{font-size:var(--text-heading-lg);line-height:var(--leading-heading-lg);letter-spacing:var(--tracking-heading-lg);font-weight:var(--font-weight-semibold);font-variant-numeric:tabular-nums}.chart{margin:0}.chart__title{font-size:var(--text-body);font-weight:var(--font-weight-medium);margin-bottom:var(--spacing-12)}.chart__svg{display:block;width:100%}.chart__bar{fill:var(--color-ink)}.chart__bar--empty{fill:var(--color-hairline)}.split{display:flex;height:12px;border-radius:var(--radius-interactive);overflow:hidden;background:var(--color-canvas)}.split__part{display:block;height:100%}.split__part--1{background:var(--color-ink)}.split__part--2{background:var(--color-mid-gray)}.split__part--3{background:var(--color-chart-gray)}.split__part--4{background:var(--color-hairline)}.split__key{display:flex;flex-wrap:wrap;gap:var(--spacing-12);margin-top:var(--spacing-12);font-size:var(--text-caption);color:var(--color-mid-gray)}.split__legend{display:flex;align-items:center;gap:var(--spacing-4)}.split__swatch{display:inline-block;width:10px;height:10px;border-radius:var(--radius-small)}.deck-list{display:flex;flex-direction:column;gap:var(--spacing-12)}.deck{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-16);flex-wrap:wrap}.deck-toolbar{justify-content:space-between}.deck__name{flex:1 1 auto}.deck__due{display:flex;align-items:center;justify-content:flex-end;gap:var(--spacing-4);flex:0 1 auto;flex-wrap:wrap}.deck--archived{opacity:.6}.deck--archived .deck__name{text-decoration:line-through;text-decoration-color:var(--color-mid-gray)}.deck__controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:var(--spacing-8);flex:1 1 320px}.deck__controls .input,.deck__controls .select{width:auto;min-width:120px;flex:0 1 160px}.deck__name{display:flex;align-items:center;gap:var(--spacing-8);font-size:var(--text-body-lg);line-height:var(--leading-body-lg);font-weight:var(--font-weight-medium)}@media (max-width: 640px){.page{padding:var(--spacing-24) var(--spacing-16);gap:var(--spacing-20)}.page__title{font-size:var(--text-heading);line-height:var(--leading-heading);letter-spacing:var(--tracking-heading)}.ratings{grid-template-columns:repeat(2,minmax(0,1fr))}}.note-type-picker{flex-wrap:wrap;gap:var(--spacing-8)}.note-type-editor{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:var(--spacing-24);align-items:start}@media (max-width: 900px){.note-type-editor{grid-template-columns:minmax(0,1fr)}}.note-type-row{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto auto;gap:var(--spacing-8);align-items:center}@media (max-width: 640px){.note-type-row{grid-template-columns:minmax(0,1fr) auto}}.note-type-row .input{min-width:0}.note-type-row .button--outline{padding-inline:var(--spacing-8)}.plain-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--spacing-8)}.preview{position:sticky;top:var(--spacing-16)}.code{font-family:var(--font-mono);font-size:var(--text-body);line-height:1.5;-moz-tab-size:2;tab-size:2;white-space:pre;overflow-x:auto}.alert--warning{background:var(--color-surface-alt)}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.meter{height:8px;border-radius:999px;background:var(--color-surface-alt);border:1px solid var(--color-hairline);overflow:hidden}.meter__fill{height:100%;background:var(--color-ink)}.file-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:var(--spacing-12);align-items:center}.file-row__thumb{width:40px;height:40px;object-fit:cover;border-radius:var(--radius-small);border:1px solid var(--color-hairline);background:var(--color-surface-alt)}.file-row__thumb--sound{display:grid;place-items:center;color:var(--color-mid-gray);font-size:var(--text-body-lg)}.file-row__name{min-width:0;overflow-wrap:anywhere}.note-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:var(--spacing-8) var(--spacing-12);align-items:baseline}.note-row__text{grid-column:1;min-width:0;overflow-wrap:anywhere}.note-row__meta{grid-column:1;font-size:var(--text-caption)}.note-row>.button{grid-column:2;grid-row:1 / span 2;align-self:center}.code-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:var(--spacing-8)}.code-list code{font-family:var(--font-mono, ui-monospace, monospace);font-size:var(--text-body);letter-spacing:.06em;-webkit-user-select:all;user-select:all}.note-card{align-items:center;justify-content:space-between;gap:var(--spacing-8);flex-wrap:wrap}.table-scroll{overflow-x:auto}.table{width:100%;border-collapse:collapse;font-size:var(--text-body)}.table th,.table td{padding:var(--spacing-8);text-align:left;border-bottom:1px solid var(--color-hairline);white-space:nowrap}.table th{font-weight:var(--font-weight-medium);color:var(--color-mid-gray)}.table .numeric{font-variant-numeric:tabular-nums}.appbar{position:sticky;top:0;z-index:10;background:var(--color-paper);border-bottom:1px solid var(--color-hairline)}.appbar__inner{max-width:var(--page-width);margin:0 auto;padding:var(--spacing-12) var(--spacing-20);display:flex;align-items:center;gap:var(--spacing-24);flex-wrap:wrap}.appbar__mark{font-size:var(--text-body-lg);line-height:var(--leading-body-lg);font-weight:var(--font-weight-semibold);letter-spacing:-.2px}.appbar__nav{display:flex;align-items:center;gap:var(--spacing-4);flex-wrap:wrap}.appbar__account{margin-left:auto;display:flex;align-items:center;gap:var(--element-gap)}.navlink{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:none;border:none;border-radius:var(--radius-small);padding:var(--spacing-8) var(--spacing-12);font:inherit;font-size:var(--text-body);line-height:var(--leading-body);color:var(--color-mid-gray);cursor:pointer}.navlink:hover{color:var(--color-ink);background:var(--color-surface-alt)}.navlink--current{color:var(--color-ink);font-weight:var(--font-weight-semibold)}.linkish{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:none;border:none;padding:0;font:inherit;color:var(--color-ink);text-decoration:underline;text-underline-offset:2px;cursor:pointer}.linkish:hover{text-decoration-thickness:2px}.explainer{gap:var(--spacing-8);font-size:var(--text-body);line-height:var(--leading-body);color:var(--color-mid-gray)}.explainer strong{color:var(--color-ink-soft);font-weight:var(--font-weight-medium)}.explainer p{margin:0}.shape{display:flex;flex-direction:column;gap:var(--spacing-4);margin:0}.shape__row{display:flex;gap:var(--spacing-12);flex-wrap:wrap}.shape__row dt{min-width:5.5em;color:var(--color-ink-soft)}.shape__row dd{margin:0}.shape__when:before{content:" — "}.page--prose{max-width:620px}.prose__lead{font-size:var(--text-body-lg);line-height:var(--leading-body-lg);color:var(--color-ink-soft)}.prose{display:flex;flex-direction:column;gap:var(--spacing-12)}.prose p{margin:0;font-size:var(--text-body-lg);line-height:var(--leading-body-lg);color:var(--color-ink-soft)}.prose__head{font-size:var(--text-subheading);line-height:var(--leading-subheading);margin-top:var(--spacing-16)}.prose__subhead{font-size:var(--text-body-lg);line-height:var(--leading-body-lg);font-weight:var(--font-weight-semibold);color:var(--color-ink);margin:var(--spacing-8) 0 0}.prose__steps{margin:0;padding-left:var(--spacing-24);display:flex;flex-direction:column;gap:var(--spacing-8);font-size:var(--text-body-lg);line-height:var(--leading-body-lg);color:var(--color-ink-soft)}.specimen{margin:0;display:grid;grid-template-columns:auto 1fr;gap:var(--spacing-4) var(--spacing-12);align-items:baseline;padding:var(--spacing-12) var(--spacing-16);background:var(--color-surface-alt);border:1px solid var(--color-hairline);border-radius:var(--radius-nested)}.specimen__label{font-size:var(--text-caption);line-height:var(--leading-caption);letter-spacing:.04em;text-transform:uppercase;color:var(--color-mid-gray);white-space:nowrap}.specimen__value{margin:0;font-size:var(--text-body);line-height:var(--leading-body);color:var(--color-ink)}.specimen__label--bad{color:var(--color-ember)}.specimen__label--good{color:var(--color-ink);font-weight:var(--font-weight-semibold)}.specimen--swap{row-gap:var(--spacing-8)}.hub{display:flex;flex-direction:column;gap:var(--spacing-12)}.hub__item{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;font:inherit;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:var(--spacing-4)}.hub__item:hover{background:var(--color-surface-alt)}.hub__name{font-size:var(--text-subheading);line-height:var(--leading-subheading);font-weight:var(--font-weight-medium);color:var(--color-ink)}.hub__what{font-size:var(--text-body);line-height:var(--leading-body);color:var(--color-mid-gray)}
