.lb-kicker{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .75rem;margin:1rem 0 .5rem;font-family:var(--font-ui);font-size:var(--t-tag);color:var(--line-2);letter-spacing:.04em}.lb-badge{display:inline-block;padding:.15rem .65rem;border:1px solid var(--copper);border-radius:999px;color:var(--copper-ink);font-weight:700;text-transform:uppercase;letter-spacing:.06em;text-decoration:none}a.lb-badge{margin:0}.lb-learn{margin-block:1.5rem;padding:1.25rem;max-width:var(--maxw);background:var(--panel);border:1px solid color-mix(in srgb,var(--line-2) 28%,transparent);border-left:4px solid var(--copper);border-radius:var(--radius)}.lb-learn h2{margin:0 0 .5rem;font-family:var(--font-ui);font-size:var(--t-h3);color:var(--copper-ink)}.lb-learn h2:before{display:none!important}.lb-learn ul{margin:0;padding-left:1.2rem}.lb-learn li{margin:.3rem 0}.lb-prereq{margin:.75rem 0 0;font-family:var(--font-ui);font-size:var(--t-sm);color:var(--line-2)}.lb-callout{margin-block:1.5rem;max-width:var(--maxw);padding:1rem 1.25rem;border-left:3px solid var(--copper);background:color-mix(in srgb,var(--panel) 70%,transparent);border-radius:0 var(--radius) var(--radius) 0}.lb-callout>:first-child{margin-top:0}.lb-callout>:last-child{margin-bottom:0}.lb-callout--warn{border-left-color:var(--wrong)}.lb-f{font-family:var(--font-ui);font-weight:600;font-variant-numeric:tabular-nums;white-space:nowrap;color:var(--line)}.lb-tablewrap{margin-block:1.5rem;max-width:100%;overflow-x:auto}.lb-table{border-collapse:collapse;width:100%;font-family:var(--font-ui);font-size:var(--t-sm);font-variant-numeric:tabular-nums}.lb-table th,.lb-table td{padding:.55rem .75rem;border-bottom:1px solid color-mix(in srgb,var(--line-2) 35%,transparent);text-align:left;vertical-align:top}.lb-table thead th{color:var(--copper-ink);border-bottom-width:2px}.lb-next{display:grid;gap:1rem;margin:2.5rem 0 1rem}@media(min-width:640px){.lb-next{grid-template-columns:1fr 1fr}}a.lb-nav{margin:0;display:grid;gap:.2rem;padding:.9rem 1rem;border-radius:var(--radius);border:1px solid color-mix(in srgb,var(--line-2) 45%,transparent);text-decoration:none;background:var(--panel)}a.lb-nav:hover{border-color:var(--copper)}.lb-nav span{color:var(--line-2);font-size:var(--t-sm)}.lb-nav b{color:var(--copper-ink)}.lb-nav.next{text-align:right}.lb-quiz{margin-block:1.5rem;max-width:var(--maxw)}.lb-quiz__bar{display:flex;flex-wrap:wrap;gap:.75rem 1rem;align-items:center;justify-content:space-between;margin:0 0 1rem;font-family:var(--font-ui);font-size:var(--t-sm);color:var(--line-2)}.lb-quiz__bar b{color:var(--line)}.lb-quiz__list{list-style:none;margin:0;padding:0;display:grid;gap:1.25rem;max-width:none}.lb-q{margin:0;padding:1.25rem;background:var(--panel);border:1px solid color-mix(in srgb,var(--line-2) 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var(--copper);border-radius:var(--radius);font-family:var(--font-ui)}.lb-quiz__actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.25rem}.lb-progress{margin-block:1.5rem;max-width:var(--maxw);font-family:var(--font-ui);font-size:var(--t-sm);color:var(--line-2)}.lb-progress__bar{display:block;height:8px;margin-top:.5rem;border-radius:999px;background:color-mix(in srgb,var(--line-2) 25%,transparent);overflow:hidden}.lb-progress__bar i{display:block;height:100%;width:0;background:var(--copper);border-radius:999px}.lb-list{list-style:none;margin-block:1.5rem;padding:0;display:grid;gap:1rem;max-width:none}.lb-list>li{margin:0;display:grid}a.lb-card{margin:0;display:grid;grid-template-columns:2.5rem 1fr;column-gap:1rem;row-gap:.35rem;align-items:start;padding:1.1rem 1.25rem;background:var(--panel);border:1px solid color-mix(in srgb,var(--line-2) 26%,transparent);border-radius:var(--radius);text-decoration:none;color:var(--line)}a.lb-card:hover{border-color:var(--copper)}.lb-card__n{grid-row:span 3;display:grid;place-items:center;width:2.5rem;height:2.5rem;border-radius:50%;border:2px solid var(--line-2);font-family:var(--font-ui);font-weight:700;color:var(--line-2);font-variant-numeric:tabular-nums}.lb-card.is-done .lb-card__n{border-color:var(--correct);background:color-mix(in srgb,var(--correct) 22%,transparent);color:var(--line)}.lb-card__t{font-family:var(--font-ui);font-weight:700;font-size:var(--t-h3);line-height:1.25;color:var(--line)}.lb-card__s{font-size:var(--t-sm);color:var(--line-2);line-height:1.5}.lb-card__meta{display:flex;flex-wrap:wrap;gap:.35rem .75rem;align-items:center;font-family:var(--font-ui);font-size:var(--t-tag);color:var(--line-2);letter-spacing:.04em}.lb-card__meta .lb-kind{padding:.05rem .5rem;border:1px solid color-mix(in srgb,var(--line-2) 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label>span{font-family:var(--font-ui);font-size:var(--t-tag);color:var(--line-2)}@media(max-width:480px){.lb-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.lb-row label:first-child{grid-column:1 / -1}}.lb-flow{list-style:none;margin-block:1.5rem;padding:0;display:grid;gap:1rem;max-width:var(--maxw);counter-reset:lbflow}.lb-flow>li{counter-increment:lbflow;margin:0;padding:1rem 1.25rem 1rem 3.5rem;position:relative;background:var(--panel);border:1px solid color-mix(in srgb,var(--line-2) 28%,transparent);border-radius:var(--radius)}.lb-flow>li:before{content:counter(lbflow);position:absolute;left:1rem;top:1rem;width:1.75rem;height:1.75rem;display:grid;place-items:center;border-radius:50%;background:var(--copper);color:#fff;font:700 .85rem / 1 var(--font-ui)}.lb-flow>li>b:first-child{display:block;font-family:var(--font-ui);margin-bottom:.25rem}.lb-flow .yes,.lb-flow .no{font-family:var(--font-ui);font-weight:700}.lb-flow .yes{color:var(--correct)}.lb-flow .no{color:var(--wrong)}.lb-bank__filters{display:grid;gap:1.25rem;margin-block:1.5rem;padding:1.25rem;background:var(--panel);border:1px solid color-mix(in srgb,var(--line-2) 28%,transparent);border-radius:var(--radius)}.lb-chips{display:flex;flex-wrap:wrap;gap:.6rem;margin:0;padding:0;border:0;min-width:0}.lb-chips legend{float:left;width:100%;margin-bottom:.6rem;font-family:var(--font-ui);font-weight:600;font-size:var(--t-sm)}.lb-chip{min-height:44px;padding:.3rem .9rem;border:1px solid var(--line-2);border-radius:999px;background:transparent;color:var(--line-2);font:600 var(--t-sm) / 1.2 var(--font-ui);cursor:pointer}.lb-chip[aria-pressed=true]{background:var(--btn-bg);border-color:var(--btn-bg);color:var(--btn-ink)}.lb-chip small{font-weight:500;opacity:.85}.lb-bank__stats{display:grid;gap:.75rem;grid-template-columns:repeat(auto-fit,minmax(8rem,1fr));margin-block:1.5rem;padding:0;list-style:none;max-width:none}.lb-bank__stats li{margin:0;padding:.75rem 1rem;background:var(--panel);border:1px solid color-mix(in srgb,var(--line-2) 28%,transparent);border-radius:var(--radius);font-family:var(--font-ui);font-size:var(--t-sm);color:var(--line-2)}.lb-bank__stats b{display:block;font-size:1.4rem;color:var(--copper-ink);font-variant-numeric:tabular-nums}.lb-hist{margin-block:1.5rem;padding:1rem 1.25rem;background:var(--panel);border:1px solid color-mix(in srgb,var(--line-2) 28%,transparent);border-radius:var(--radius)}.lb-hist>summary{min-height:var(--tap);display:flex;align-items:center;font-family:var(--font-ui);font-weight:700;color:var(--copper-ink);cursor:pointer}.lb-hist[open]>summary{margin-bottom:.75rem}.lb-hist__note{margin:0;color:var(--line-2);font-size:var(--t-sm);max-width:62ch}.lb-hist__wrap{overflow-x:auto;max-width:100%;position:relative}.lb-hist__t{width:100%;border-collapse:collapse;font-family:var(--font-ui);font-size:var(--t-sm);font-variant-numeric:tabular-nums}.lb-hist__t th,.lb-hist__t td{text-align:left;padding:.5rem .75rem .5rem 0;border-bottom:1px solid color-mix(in srgb,var(--line-2) 28%,transparent);vertical-align:middle;white-space:nowrap}.lb-hist__t thead th{color:var(--line-2);font-weight:600}.lb-hist__t tbody th{font-weight:600;color:var(--line);white-space:normal;min-width:8rem}.lb-hist__pct{font-weight:700}.lb-hist__pct[data-band=good]{color:var(--correct)}.lb-hist__pct[data-band=low]{color:var(--wrong)}.lb-hist__barbox{display:flex;align-items:flex-end;gap:3px;height:2rem;min-width:3rem}.lb-hist__bar{width:8px;height:calc(var(--p, 6) * .02rem);border-radius:2px 2px 0 0;background:var(--copper)}.lb-hist__bar[data-band=good]{background:var(--correct)}.lb-hist__bar[data-band=low]{background:var(--wrong)}.lb-hist .lb-chip{min-height:40px}@media(max-width:640px){.lb-hist__t thead{display:none}.lb-hist__t,.lb-hist__t tbody{display:block}.lb-hist__t tr{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.6rem .75rem;padding-block:.9rem;border-bottom:1px solid color-mix(in srgb,var(--line-2) 28%,transparent)}.lb-hist__t th,.lb-hist__t td{border:0;padding:0;white-space:normal}.lb-hist__t tbody th{grid-column:1 / -1;min-width:0}.lb-hist__t td[data-l]:before{content:attr(data-l);display:block;margin-bottom:.15rem;font-size:.75rem;font-weight:500;color:var(--line-2)}.lb-hist__t td.lb-hist__bars{grid-column:1 / 3}.lb-hist__go{align-self:end;justify-self:end}}.lb-hist__h{margin:1.25rem 0 .5rem;font-size:var(--t-sm);font-family:var(--font-ui);color:var(--line-2)}.lb-hist__sets{margin:0;padding-left:1.25rem;display:grid;gap:.35rem;font-family:var(--font-ui);font-size:var(--t-sm)}.figure .lb-fill{fill:color-mix(in srgb,var(--copper) 22%,transparent);stroke:none}.figure .lbl.sm{font-size:12px}.figure .lbl.big{font-size:18px}.figure .ln.ok{stroke:var(--correct)}.figure .ln.bad{stroke:var(--wrong)}@media print{.lb-quiz__actions,.lb-next,.lb-bank__filters{display:none!important}}.figure .lb-head{fill:var(--line-2)}.figure .lb-head.cu{fill:var(--copper)}.lb-out .lb-wide{grid-column:1 / -1}.lb-field.lb-check span{display:flex;align-items:center;gap:.75rem;min-height:var(--tap);font-weight:500}.lb-field.lb-check input{width:1.4rem;height:1.4rem;min-height:0;flex:none;accent-color:var(--copper)}fieldset.lb-fields>legend{padding:0;margin-bottom:1.25rem}fieldset.lb-rows>legend{padding:0;margin-bottom:1rem}.lb-tool>.lb-callout{margin:0}