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.lesson-navigation-link>span{gap:5px;min-width:0;display:grid}.lesson-navigation-bottom .lesson-navigation-link small{color:var(--color-muted);font-size:var(--text-2xs)}.lesson-navigation-bottom .lesson-navigation-link strong{font-size:var(--text-xs);overflow-wrap:anywhere;font-weight:650;line-height:1.5}.lesson-navigation-bottom .lesson-navigation-link.is-next{text-align:right;grid-column:2;justify-content:flex-end}@media (width<=640px){.lesson-toolbar{flex-wrap:wrap;gap:8px}.lesson-toolbar .lesson-actions{gap:6px}.lesson-toolbar .lesson-actions a{gap:6px;padding-inline:9px}.lesson-toolbar>.lesson-navigation{gap:5px;margin-left:auto}.lesson-toolbar>.lesson-navigation .lesson-navigation-link{font-size:var(--text-2xs);gap:4px;padding-inline:7px}.lesson-navigation-bottom{grid-template-columns:minmax(0,1fr);gap:8px}.lesson-navigation-bottom .lesson-navigation-link.is-next{grid-column:1}}.domain-group{border-bottom:1px solid var(--line)}.domain-group .domain-row{cursor:pointer;border-bottom:0;list-style:none}.domain-group .domain-row::-webkit-details-marker{display:none}.domain-group .domain-row:focus-visible,.lesson-mark-done:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.domain-completion{color:var(--color-muted);font-size:var(--text-2xs);gap:8px;line-height:1.5;display:grid}.domain-completion .domain-progress{width:100%;display:block}.domain-chevron{color:var(--color-muted);transition:transform var(--dur-fast) var(--ease-out)}.domain-group[open] .domain-chevron{transform:rotate(180deg)}.domain-expanded{padding:0 14px 18px 65px}.domain-detail-link{color:var(--color-link);font-size:var(--text-xs);text-underline-offset:3px;margin:0 0 14px;display:inline-flex}.lesson-list{margin:0;padding:0;list-style:none}.lesson-row-status{justify-items:start;gap:5px;display:grid}.lesson-completion-label{color:var(--color-muted);font-size:var(--text-xs);align-items:center;gap:6px;line-height:1.5;display:inline-flex}.lesson-completion-label svg{flex-shrink:0}.lesson-completion-label.is-completed{color:var(--color-success)}.lesson-mark-done{min-inline-size:160px;white-space:nowrap;border:1px solid var(--color-border);min-height:42px;color:var(--color-link-hover);background:var(--color-nav-active);font:inherit;font-size:var(--text-xs);cursor:pointer;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;gap:7px;padding:10px 14px;font-weight:650;display:inline-flex}.lesson-mark-done:hover:not(:disabled){background:var(--color-raised)}.lesson-mark-done.is-completed{color:var(--color-accent);border-color:var(--color-accent)}.lesson-mark-done:disabled{opacity:.55;cursor:wait}.lesson-completion-footer{justify-content:flex-end;margin-top:20px;display:flex}@media (width<=680px){.domain-group .domain-row{grid-template-columns:24px minmax(0,1fr) 58px 18px}.domain-group .domain-completion{grid-area:2/2/auto/4;gap:5px;padding-bottom:4px}.domain-completion .domain-progress{max-width:180px}.domain-chevron{grid-area:1/4}.domain-expanded{padding:0 5px 16px 12px}.lesson-row-status{grid-column:2;padding-bottom:5px}.lesson-row-status .availability-pill{grid-column:auto}.lesson-completion-label{font-size:var(--text-2xs)}.lesson-hero .lesson-mark-done{align-self:flex-start}}.domain-title-link{color:inherit;text-decoration:none}.domain-title-link:hover{text-underline-offset:4px;text-decoration:underline}