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(prefers-color-scheme:dark){:root{--bg:#000;--surface:var(--print-ink);--ink:#f4f4f1;--plate:var(--stock);--on-plate:var(--print-ink);--plate-accent:var(--print-ink);--on-plate-accent:var(--paper);--scrim:#000000b3}}*,:before,:after{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0}button,input,select{font:inherit;color:inherit}button{cursor:pointer}h1,h2,h3{font-family:var(--font-serif);font-weight:700;line-height:1.05}h1{font-size:var(--text-36)}.wrap{max-inline-size:40rem;padding-inline:var(--space-16);margin-inline:auto}img{block-size:auto;max-inline-size:100%}a{color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.icon{fill:none;stroke:currentColor;stroke-width:2.5px;stroke-linecap:square;stroke-linejoin:miter;flex:none;block-size:1.5rem;inline-size:1.5rem}.icon .f,.icon text{fill:currentColor;stroke:none}.icon text{font:700 12.5px var(--font-sans);letter-spacing:-.25px;text-anchor:middle}.btn{align-items:center;gap:var(--space-8);min-block-size:48px;padding:0 22px 0 var(--space-16);border-radius:var(--radius-control);font-size:var(--text-18);border:0;font-weight:700;text-decoration:none;display:inline-flex}.btn .icon{block-size:20px;inline-size:20px}.btn-accent{background:var(--accent);color:var(--on-accent)}.btn-paper{background:var(--paper);color:var(--print-ink)}.link-btn{padding:var(--space-8) 0;color:var(--accent);background:0 0;border:0;font-weight:700}.link-btn:hover{text-decoration:underline}.visually-hidden,.skip-link:not(:focus){clip-path:inset(50%);white-space:nowrap;block-size:1px;inline-size:1px;position:absolute;overflow:hidden}.skip-link{z-index:10;padding:var(--space-12) var(--space-16);border-radius:var(--radius-control);background:var(--accent);color:var(--on-accent);font-weight:700;text-decoration:none;position:fixed;inset-block-start:var(--space-12);inset-inline-start:var(--space-12)}:root{--sheet-ease:cubic-bezier(.2, .7, 0, 1);--sheet-forward:.4s;--sheet-back:.36s}.player{view-transition-name:player}.back{view-transition-name:back}::view-transition-group(player),::view-transition-group(back),::view-transition-group(sidebar){animation:none}::view-transition-group(player),::view-transition-group(back){z-index:3}::view-transition-old(player),::view-transition-old(back),::view-transition-old(sidebar){display:none}::view-transition-new(player),::view-transition-new(back),::view-transition-new(sidebar),::view-transition-old(root),::view-transition-new(root){animation:none}@media (width>=52rem){.app>.side{view-transition-name:sidebar}.app>.pane{view-transition-name:sheet}::view-transition-group(sheet){overflow:clip}}@media (width<=51.99rem){.app[data-view=lessons]>.side,.app:not([data-view=lessons])>.pane{view-transition-name:sheet}}::view-transition-group(sheet){animation:none}@keyframes sheet-in{0%{transform:translate(100%)}}@keyframes sheet-off{to{transform:translate(100%)}}@keyframes sheet-dim{to{filter:brightness(.9)}}@keyframes sheet-undim{0%{filter:brightness(.9)}}@keyframes sheet-under{to{filter:brightness(.86);transform:translate(-28%)}}@keyframes sheet-from-under{0%{filter:brightness(.86);transform:translate(-28%)}}@keyframes sheet-fade-out{to{opacity:0}}@keyframes sheet-fade-in{0%{opacity:0}}::view-transition-new(sheet){z-index:2;filter:drop-shadow(-1px 0 0 var(--line));animation:sheet-in var(--sheet-forward) var(--sheet-ease) both}::view-transition-old(sheet){animation:sheet-dim var(--sheet-forward) var(--sheet-ease) both}html[data-astro-transition=back]::view-transition-old(sheet){z-index:2;filter:drop-shadow(-1px 0 0 var(--line));animation:sheet-off var(--sheet-back) var(--sheet-ease) both}html[data-astro-transition=back]::view-transition-new(sheet){z-index:1;filter:none;animation:sheet-undim var(--sheet-back) var(--sheet-ease) both}@media (width<=51.99rem){::view-transition-old(sheet){animation-name:sheet-under}html[data-astro-transition=back]::view-transition-new(sheet){animation-name:sheet-from-under}}@media (prefers-reduced-motion:reduce){::view-transition-old(sheet),html[data-astro-transition=back]::view-transition-old(sheet){animation:.15s linear both sheet-fade-out!important}::view-transition-new(sheet),html[data-astro-transition=back]::view-transition-new(sheet){animation:.15s linear both sheet-fade-in!important}}img{transition:opacity .24s ease-out}img[data-loading]{opacity:0;transition:none}.app[data-astro-cid-hkbrpulz]{gap:var(--panel-gap);padding:max(var(--panel-gap), env(safe-area-inset-top)) max(var(--panel-gap), env(safe-area-inset-right)) var(--panel-gap) max(var(--panel-gap), env(safe-area-inset-left));display:grid}.pane[data-astro-cid-hkbrpulz]{min-inline-size:0;padding:var(--space-24) 20px var(--space-32);background:var(--surface)}.pane[data-astro-cid-hkbrpulz]:focus{outline:none}.pane[data-astro-cid-hkbrpulz]>*{max-inline-size:48rem}.pane-foot[data-astro-cid-hkbrpulz]{border-block-start:1px solid var(--line);margin-block-start:40px;padding-block-start:var(--space-16)}.back[data-astro-cid-hkbrpulz]{align-items:center;gap:var(--space-4);min-block-size:44px;padding:0 var(--space-12) 0 var(--space-4);border-radius:var(--radius-control);background:var(--surface);color:var(--accent);font-weight:700;text-decoration:none;display:inline-flex}.back[data-astro-cid-hkbrpulz] .icon{block-size:20px;inline-size:20px}@media (width>=52rem){.app[data-astro-cid-hkbrpulz]{grid-template-columns:minmax(var(--sidebar-min), var(--sidebar-max)) 1fr;block-size:100dvh}.pane[data-astro-cid-hkbrpulz]{min-block-size:0;padding:40px 48px calc(48px + var(--player-block-size,0px));scroll-padding-block-end:var(--player-block-size,0px);overflow-y:auto}.app[data-astro-cid-hkbrpulz]>.side{margin-block-end:max(0px, var(--player-block-size,0px) - var(--panel-gap))}.back[data-astro-cid-hkbrpulz],.pane-foot[data-astro-cid-hkbrpulz]{display:none}}@media (width<=51.99rem){.app[data-astro-cid-hkbrpulz]{padding:env(safe-area-inset-top) env(safe-area-inset-right) 0 env(safe-area-inset-left);gap:0}.app[data-astro-cid-hkbrpulz]:not([data-view=lessons])>.side,.app[data-astro-cid-hkbrpulz][data-view=lessons]>.pane[data-astro-cid-hkbrpulz]{display:none}.back[data-astro-cid-hkbrpulz]{z-index:3;box-shadow:0 0 0 1px var(--line);position:fixed;inset-block-start:calc(env(safe-area-inset-top,0px) + var(--space-12));inset-inline-start:calc(env(safe-area-inset-left,0px) + var(--space-12))}.pane[data-astro-cid-hkbrpulz]{padding-block-start:calc(var(--space-12) + 44px + var(--space-16))}}