/*! tailwindcss v4.3.3 | MIT License | https://tailwindcss.com */.problem-ledger .ledger-excerpt .inline-math .katex{color:var(--color-forest-800)}.problem-ledger .ledger-trigger:enabled:active{filter:none;scale:1}.problem-ledger .ledger-metadata>span{color:var(--ledger-muted)}@layer components{.problem-ledger{--ledger-focus:var(--color-forest-800);--ledger-card:var(--color-surface);--ledger-hover:var(--color-sage-100);--ledger-border:var(--color-line);--ledger-sage:#ccddad;--ledger-paper:var(--color-surface);--ledger-ink:var(--color-ink-secondary);--ledger-muted:var(--color-ink-muted);--ledger-ease:cubic-bezier(.16,1,.3,1);gap:12px;min-width:0;padding:0;list-style:none;display:grid}.ledger-card{border:1px solid var(--ledger-border);min-width:0;color:var(--ledger-ink);background:var(--ledger-card);transition:transform .18s var(--ledger-ease),background-color .18s ease,border-color .18s ease;border-radius:12px;scroll-margin-block:6rem}.ledger-header{border-radius:11px;align-items:flex-start;transition:background-color .18s;display:flex}.ledger-card[data-open=true] .ledger-header{border-radius:11px 11px 0 0}.ledger-heading{min-width:0;font:inherit;flex:1;margin:0}.ledger-trigger{text-align:start;width:100%;min-height:89px;color:inherit;cursor:pointer;background:0 0;border:0;border-radius:11px;grid-template-columns:minmax(0,1fr);align-items:center;gap:20px;padding:20px;display:grid}.ledger-title-row{flex-wrap:wrap;align-items:center;gap:8px 10px;min-height:44px;display:flex}.ledger-title{color:var(--color-ink);overflow-wrap:anywhere;font-size:20px;font-weight:800;line-height:1.3}.ledger-summary{gap:6px;min-width:0;display:grid}.ledger-excerpt{overflow-wrap:anywhere;gap:4px;min-width:0;font-size:14px;font-weight:400;line-height:1.6;display:grid}.ledger-passage{min-width:0;max-width:100%;display:block;overflow-x:auto}.ledger-excerpt 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var(--ledger-ink);outline-offset:-4px}.ledger-header:has(.ledger-trigger:active),.ledger-header:has(:focus-visible){background:var(--ledger-hover)}.ledger-reader-link:active{transform:translateY(1px)}.ledger-card:has(.ledger-trigger:active){transition-duration:.1s;transform:none!important}.ledger-card:focus-visible{outline:3px solid var(--ledger-focus);outline-offset:2px}.ledger-card:focus:not(:focus-visible){outline:none}.ledger-fold{background:var(--ledger-paper);color:var(--ledger-ink);transition:grid-template-rows .4s var(--ledger-ease);border-radius:0 0 11px 11px;grid-template-rows:0fr;display:grid;overflow:hidden}.ledger-card[data-open=true] .ledger-fold{grid-template-rows:1fr}.ledger-fold-clip{min-height:0;overflow:hidden}.ledger-sheet{opacity:0;transition:opacity .18s ease,transform .4s var(--ledger-ease);padding:24px 20px 26px;transform:translateY(-8px)}.ledger-card[data-open=true] .ledger-sheet{opacity:1;transform:none}.ledger-question{gap:24px;min-width:0;display:grid}.ledger-part{gap:8px;min-width:0;display:grid}.ledger-question p{max-width:72ch}.ledger-skeleton{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:20px;padding:16px 20px;display:grid}.ledger-skeleton .loading-skeleton{background:var(--ledger-border)}@media (hover:hover) and (pointer:fine){.ledger-header:hover{background:var(--ledger-hover)}.ledger-card:has(.ledger-header:hover):not([data-open=true]){border-color:var(--color-sage-500);transform:translateY(-2px)}.ledger-reader-link:hover{filter:brightness(1.07)}}@media not all and (min-width:646px){.ledger-header{flex-wrap:wrap}.ledger-heading{flex-basis:100%}.ledger-trigger{gap:16px;padding:14px}.ledger-title{font-size:18px}.ledger-excerpt{font-size:13px}.ledger-actions{gap:10px;width:100%;padding:0 14px 14px}.ledger-metadata>span{font-size:11px}.ledger-sheet{padding:20px 14px 24px}.ledger-skeleton{grid-template-columns:minmax(0,1fr);gap:10px;padding:16px 10px}.ledger-skeleton .ledger-actions{grid-column:1/-1;padding:0}}@media (prefers-reduced-motion:reduce){.ledger-card,.ledger-reader-link,.ledger-sheet{transform:none!important}.ledger-fold{transition:none}}}@layer components{.difficulty-switch{--switch-forest:#1b4433;--switch-selected:#ccddad;--switch-ink:#203e2d;--switch-muted:#5d705c;--switch-surface:transparent;--switch-hover:color-mix(in srgb,var(--switch-selected) 35%,transparent);position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));width:100%;max-width:504px;min-width:0;padding:4px;border-radius:12px;background:var(--switch-surface)}.difficulty-switch-indicator{position:absolute;inset-block:4px;left:4px;width:calc((100% - 8px) / 4);border-radius:9px;background:var(--switch-selected);pointer-events:none;transition:transform .24s cubic-bezier(.16,1,.3,1)}.difficulty-switch-option{position:relative;display:flex;min-width:0;min-height:44px;align-items:center;justify-content:center;gap:9px;padding:10px 8px;border-radius:9px;color:var(--switch-muted);font-size:13px;font-weight:600;line-height:1.4;text-decoration:none;transition:color .16s ease,background-color .16s ease}.difficulty-switch-count{min-width:21px;color:var(--switch-muted);text-align:center;font-size:11px;font-weight:500;line-height:20px;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.difficulty-switch-option[aria-current=page],.difficulty-switch-option[aria-current=page] .difficulty-switch-count{color:var(--switch-ink)}.difficulty-switch-option:focus-visible{z-index:1;outline:3px solid var(--switch-forest);outline-offset:2px}.difficulty-switch-option:active{translate:0 1px}.difficulty-switch[data-presentation=mobile] .difficulty-switch-option{flex-direction:column;min-height:59px;gap:2px;padding:8px 2px;font-size:12px}@media (hover:hover) and (pointer:fine){.difficulty-switch-option:not([aria-current]):hover{background:var(--switch-hover);color:var(--switch-ink)}}@media (prefers-reduced-motion:reduce){.difficulty-switch-indicator,.difficulty-switch-option{transition:none;translate:none}}}