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var(--brand);color:var(--brand)}.lesson-sidebar .lesson-nav li a .section-number{display:block;flex:none;width:28px;padding-top:1px;border:0;color:var(--muted);font-size:12px;font-weight:850;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;text-align:center;background:transparent}.lesson-sidebar .lesson-nav li a[aria-current=page] .section-number{color:var(--brand)}.lesson-sidebar .lesson-nav li a .section-label small{display:block;margin-top:3px;color:var(--muted);font-size:11px;font-weight:500;overflow-wrap:anywhere}.draft-shell{padding-bottom:96px}.showcase-group+.showcase-group{margin-top:34px}.showcase-tag{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin:0 0 8px;padding-bottom:5px;border-bottom:1px solid var(--line);color:var(--muted);font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.showcase-tag 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var(--line);background:color-mix(in srgb,var(--surface) 94%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 -8px 24px rgba(0,0,0,.08)}.pl-key{min-width:44px;min-height:44px;border:solid var(--line);border-width:1px 1px 2px;border-radius:4px;background:var(--surface-soft);color:var(--text);font:inherit;font-size:1.2rem;font-weight:750;cursor:pointer;transition:border-color .18s ease,background-color .18s ease}.pl-key:hover{border-color:var(--brand)}.pl-key:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.pl-key.pl-shift{padding:0 14px;font-size:13px}.pl-key[aria-pressed=true]{border-color:var(--brand);background:var(--brand);color:var(--brand-text)}@media (max-width:640px){.sound-table th{width:auto}.cloze{line-height:2.5}.cloze input{width:8em}}@media (prefers-reduced-motion:reduce){.cloze input,.lesson-sidebar .lesson-nav li a,.pl-key{transition:none}}.scene-example+.scene-example{margin-top:18px}.scene-example 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var(--line);vertical-align:baseline}.formula-table tr:first-child td,.formula-table tr:first-child th{border-top:0}.formula-table th{width:48%;padding-right:14px;color:var(--muted);font-size:15px;font-weight:600}.formula-table td{font-size:20px;font-weight:800}.l1-contrast{margin:0;padding:0 16px;border:1px solid var(--line);border-left:3px solid var(--start-line,var(--line));background:var(--start-bg,var(--surface-soft))}.l1-contrast>.disclosure-head{min-height:48px;display:flex;align-items:center;color:var(--brand);font-weight:700;cursor:pointer}.l1-contrast.is-open>.disclosure-head{min-height:44px}.l1-contrast .rich-p{margin:0 0 14px;font-size:15px;line-height:1.65;max-width:62ch}.scene-example:has(.phrase-card)+.scene-example:has(.phrase-card){margin-top:12px;padding-top:0;border-top:0}.dialogue-label{display:block;margin:4px 0 8px}.note-group>*{margin:0;border:0;border-radius:0;background:transparent}.note-group>*+*{border-top:1px solid var(--line)}.note-group>.l1-contrast{padding:0 16px}.note-group>.l1-contrast>.disclosure-head{min-height:44px;color:var(--text);font-size:14px;font-weight:650}.note-group>.l1-contrast .rich-p{color:var(--muted-strong,var(--text))}.note-group>.formula-block{padding:14px 16px}.note-group>.l1-contrast{border:0;background:transparent}.note-group>.l1-contrast+*{border-top:1px solid var(--line)}.disclosure-head{display:flex;align-items:center;width:100%;padding:0;border:0;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer}.fold{display:grid;grid-template-rows:0fr;opacity:0;visibility:hidden;transition:grid-template-rows .25s ease-out,opacity .2s ease-out,visibility 0s linear .25s}.fold.open{grid-template-rows:1fr;opacity:1;visibility:visible;transition:grid-template-rows .25s ease-out,opacity .2s ease-out .05s,visibility 0s}.fold-inner{overflow:hidden;min-height:0}@media (prefers-reduced-motion:reduce){.fold,.fold.open{transition:none}}