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outline-color var(--dur-2) var(--ease-standard), transform var(--dur-1) var(--ease-standard);background:0 0;border:0;flex:none;justify-content:center;align-items:center;gap:10px;padding:0 14px;display:inline-flex}._7_962a_favorite:hover{color:var(--c-text);outline-color:var(--c-line-strong)}._7_962a_favorite:active{transform:translateY(1px)}._7_962a_favorite:focus-visible{outline:2px solid var(--c-focus);outline-offset:2px}._7_962a_favorite[aria-pressed=true]{color:var(--c-brass);outline-color:var(--c-brass-line);background:var(--c-brass-wash)}._7_962a_favLabel{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;margin:-1px;position:absolute;overflow:hidden}._7_962a_favorite:only-child{flex:auto}._7_962a_favorite:only-child ._7_962a_favLabel,._7_962a_favLabel[data-show]{clip-path:none;width:auto;height:auto;margin:0;position:static;overflow:visible}@media 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var(--c-line-faint)}._7_962a_chapter{width:100%;min-height:var(--tap);color:inherit;text-align:left;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:background-color var(--dur-2) var(--ease-standard);background:0 0;border:0;grid-template-columns:5ch minmax(0,1fr);gap:14px;padding:14px 8px 14px 0;display:grid;position:relative}._7_962a_chapter:before{content:"";background:var(--c-brass);transform-origin:50%;width:2px;transition:transform var(--dur-3) var(--ease-out);position:absolute;inset:0 auto 0 0;transform:scaleY(0)}._7_962a_chapter:hover:not(:disabled),._7_962a_chapter:active:not(:disabled){background:var(--c-brass-wash)}._7_962a_chapter:focus-visible{outline:2px solid var(--c-focus);outline-offset:-2px}._7_962a_chapter:disabled{cursor:default}._7_962a_chapter[aria-current=true]{background:var(--c-brass-wash);padding-left:14px}._7_962a_chapter[aria-current=true]:before{transform:scaleY(1)}._7_962a_chTime{font-family:var(--font-mono);font-size:var(--fs-mono);font-variant-numeric:tabular-nums;color:var(--c-text-3);padding-top:2px}._7_962a_chapter[aria-current=true] ._7_962a_chTime,._7_962a_chapter:hover:not(:disabled) ._7_962a_chTime{color:var(--c-brass)}._7_962a_chBody{gap:4px;min-width:0;display:grid}._7_962a_chTitle{color:var(--c-text);font-size:15px;font-weight:500;line-height:1.3}._7_962a_chText{font-size:var(--fs-small);color:var(--c-text-3);-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;line-height:1.4;display:-webkit-box;overflow:hidden}._7_962a_more{min-height:var(--tap);color:var(--c-text-2);font:500 14px/1 var(--font-text);text-decoration:underline;-webkit-text-decoration-color:var(--c-line-strong);text-decoration-color:var(--c-line-strong);text-underline-offset:5px;cursor:pointer;transition:color var(--dur-2) var(--ease-standard), text-decoration-color var(--dur-2) var(--ease-standard);background:0 0;border:0;align-items:center;margin-top:4px;padding:0;display:inline-flex}._7_962a_more:hover{color:var(--c-brass-hover);-webkit-text-decoration-color:var(--c-brass);text-decoration-color:var(--c-brass)}._7_962a_more:focus-visible{outline:2px solid var(--c-focus);outline-offset:2px}._7_962a_chapters:not([data-all]) ._7_962a_chapterExtra{display:none}._7_962a_body{gap:var(--block-gap);width:100%;max-width:var(--container);padding:var(--block-gap) var(--gutter) var(--section-y-tight);grid-template-columns:minmax(0,1fr);margin-inline:auto;display:grid}._7_962a_main,._7_962a_practiceCol,._7_962a_notesCol{min-width:0}._7_962a_practiceCol{order:1}._7_962a_main{order:2}._7_962a_notesCol{order:3}._7_962a_practiceCol,._7_962a_main,._7_962a_notesCol,#_7_962a_lesson-chapters,#_7_962a_lesson-practice,#_7_962a_lesson-digest{scroll-margin-top:calc(var(--bar-h) + 8px)}._7_962a_practiceLead{font-size:var(--fs-body);line-height:var(--lh-snug);color:var(--c-text-2);margin:16px 0 14px}._7_962a_bar{background:var(--c-line);height:2px;display:block}._7_962a_bar>span{background:var(--c-brass);transform-origin:0;height:100%;transition:transform var(--dur-4) var(--ease-expo);display:block}._7_962a_steps{margin:0;padding:0;list-style:none}._7_962a_step{border-bottom:1px solid var(--c-line-faint)}._7_962a_stepLabel{min-height:var(--tap);cursor:pointer;-webkit-tap-highlight-color:transparent;grid-template-columns:24px minmax(0,1fr);align-items:start;gap:14px;padding:14px 0;display:grid;position:relative}._7_962a_stepInput{opacity:0;cursor:pointer;width:24px;height:100%;margin:0;position:absolute;inset:0 auto auto 0}._7_962a_box{outline:1px solid var(--c-line-strong);outline-offset:-1px;color:#0000;width:24px;height:24px;transition:background-color var(--dur-2) var(--ease-standard), outline-color var(--dur-2) var(--ease-standard), color var(--dur-2) var(--ease-standard);place-items:center;margin-top:-1px;display:grid}._7_962a_stepLabel:hover ._7_962a_box{outline-color:var(--c-brass)}._7_962a_stepInput:checked+._7_962a_box{background:var(--c-brass);outline-color:var(--c-brass);color:var(--c-on-brass)}._7_962a_stepInput:focus-visible+._7_962a_box{outline:2px solid var(--c-focus);outline-offset:2px}._7_962a_stepText{font-size:var(--fs-body);line-height:var(--lh-snug);color:var(--c-text);transition:color var(--dur-2) var(--ease-standard)}._7_962a_stepDone 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var(--ease-standard);background:0 0;border:0;padding:0}._7_962a_noteTime:hover{color:var(--c-brass-hover)}._7_962a_noteTime:focus-visible,._7_962a_noteDel:focus-visible{outline:2px solid var(--c-focus);outline-offset:-2px}._7_962a_noteText{font-size:var(--fs-small);color:var(--c-text-2);overflow-wrap:anywhere;margin:0;padding:12px 0;line-height:1.5}._7_962a_noteDel{width:var(--tap);height:var(--tap);color:var(--c-text-4);font:300 22px/1 var(--font-text);cursor:pointer;transition:color var(--dur-2) var(--ease-standard);background:0 0;border:0;place-items:center;display:grid}._7_962a_noteDel:hover{color:var(--c-danger)}@keyframes _7_962a_noteIn{0%{opacity:0;transform:translateY(6px)}}@media (min-width:720px){._7_962a_noteBtn{flex:none;min-width:232px}._7_962a_favorite{margin-left:auto}._7_962a_favorite:only-child{flex:none;margin-left:0}._7_962a_subrow{grid-template-columns:auto auto;justify-content:space-between;align-items:center;margin-top:0}._7_962a_jump{border-block:0;grid-auto-columns:auto;gap:4px}._7_962a_jump a{min-height:44px;padding-inline:16px}._7_962a_jump a+a{box-shadow:none}}@media (max-width:1023px){._7_962a_chText{display:none}._7_962a_chapter[aria-current=true] ._7_962a_chText{display:-webkit-box}._7_962a_chapter{align-items:center;padding-block:12px}._7_962a_chTime{padding-top:0}}@media (min-width:1024px){._7_962a_stage{column-gap:var(--col-gap);grid-template-rows:auto auto;grid-template-columns:repeat(12,minmax(0,1fr))}._7_962a_playerBox{grid-area:1/1/auto/9;margin-inline:0}._7_962a_under{grid-area:2/1/auto/9}._7_962a_chaptersCol{grid-area:1/9/auto/-1;margin-top:0;position:relative}._7_962a_chapters{background:var(--c-bg-raised);box-shadow:inset 0 0 0 1px var(--c-line);flex-direction:column;padding:20px 20px 0;display:flex;position:absolute;inset:0}._7_962a_chapterList{overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--c-line-strong) transparent;flex:1;min-height:0;margin-inline:-20px;padding-inline:20px;overflow-y:auto}._7_962a_chapters:not([data-all]) ._7_962a_chapterExtra{display:list-item}._7_962a_more{display:none}._7_962a_chapter[aria-current=true]{padding-left:12px}._7_962a_body{align-items:start;column-gap:var(--col-gap);padding-top:var(--section-y-tight);grid-template-rows:auto 1fr;grid-template-columns:repeat(12,minmax(0,1fr))}._7_962a_main{order:0;grid-area:1/1/span 2/8}._7_962a_practiceCol{order:0;grid-area:1/9/auto/-1}._7_962a_notesCol{order:0;grid-area:2/9/auto/-1}}@media (prefers-reduced-motion:reduce){._7_962a_note{animation:none}._7_962a_bar>span,._7_962a_chapter:before{transition:none}}