.course-content{--sd-mono:var(--font-geist-mono),ui-monospace,SFMono-Regular,Menlo,monospace;--sd-display:var(--font-display),ui-sans-serif,system-ui,sans-serif;--sd-sans:var(--font-geist-sans),ui-sans-serif,system-ui,sans-serif;--sd-grid:color-mix(in srgb,var(--c-line) 40%,transparent);font-family:var(--sd-sans);font-size:var(--reader-size,17px);line-height:1.75;color:var(--c-fg);overflow-wrap:break-word}.course-content .sd-body{font-size:inherit}.course-content p{margin:0 0 1.1em}.course-content a{color:var(--c-signal-text);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}.course-content a:hover{color:var(--c-fg)}.course-content strong{font-weight:650;color:var(--c-fg)}.course-content ol,.course-content ul{margin:0 0 1.1em;padding-left:1.4em}.course-content ul{list-style:square}.course-content ol{list-style:decimal}.course-content li{margin:.3em 0}.course-content li::marker{color:var(--c-fg-4)}.course-content li>p{margin-bottom:.4em}.course-content :not(pre)>code{font-family:var(--sd-mono);font-size:.86em;padding:.08em .35em;background:var(--c-surface-2);border:1px solid var(--c-line);color:var(--c-fg);overflow-wrap:anywhere}.course-content blockquote{margin:1.4em 0;padding:.1em 0 .1em 1em;border-left:2px solid var(--c-line-strong);color:var(--c-fg-2)}.course-content hr{border:0;height:1px;width:120px;margin:48px auto;background:var(--c-line)}.course-content img{max-width:100%;height:auto}.course-content figure{margin:28px 0}.course-content pre{font-family:var(--sd-mono)}.course-content .sd-btn,.sd-fs .sd-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:36px;padding:0 12px;border:1px solid var(--c-line-strong);background:transparent;color:var(--c-fg);font-family:var(--sd-sans,var(--font-geist-sans),sans-serif);font-size:13px;line-height:1;white-space:nowrap;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none}.course-content .sd-btn:hover,.sd-fs .sd-btn:hover{border-color:var(--c-fg-3)}.course-content .sd-btn[aria-pressed=true]{background:var(--c-fg);border-color:var(--c-fg);color:var(--c-bg)}.course-content .sd-btn-solid{background:var(--c-signal);border-color:var(--c-signal);color:var(--c-on-signal);font-weight:600}.course-content .sd-btn-solid:hover{border-color:var(--c-fg)}.course-content .sd-btn-quiet{border-color:transparent;color:var(--c-fg-3)}@media (pointer:coarse){.course-content .sd-btn,.sd-fs .sd-btn{min-height:44px}}.course-content [data-sd-chrome]{-moz-user-select:none;user-select:none;-webkit-user-select:none}.course-content .sd-h{position:relative;margin:2em 0 .6em;font-family:var(--sd-display);font-weight:700;line-height:1.15;letter-spacing:-.02em;color:var(--c-fg);scroll-margin-top:var(--reader-scroll-margin,170px)}.course-content .sd-h1{font-size:1.9em;font-weight:800;letter-spacing:-.035em}.course-content .sd-h2{font-size:1.65em}.course-content .sd-h3{font-size:1.4em}.course-content .sd-h4{font-size:1.15em;letter-spacing:-.01em}.course-content .sd-h5,.course-content .sd-h6{font-size:1em;letter-spacing:0}.course-content .sd-hnum{margin-right:.15em;font-family:var(--sd-mono);font-size:.58em;font-weight:500;letter-spacing:0;color:var(--c-signal-text);vertical-align:.18em}.course-content .sd-anchor{display:inline-block;margin-left:.35em;padding:0 .2em;font-family:var(--sd-mono);font-size:.6em;font-weight:400;color:var(--c-fg-4);text-decoration:none;opacity:0;vertical-align:.2em}.course-content .sd-anchor:focus-visible,.course-content .sd-h:hover .sd-anchor{opacity:1}@media (hover:none){.course-content .sd-anchor{opacity:.5}}.course-content .sd-chapter{display:grid;grid-template-columns:auto minmax(0,1fr) auto;-moz-column-gap:14px;column-gap:14px;align-items:end;margin-top:2.4em}.course-content .sd-ch-box{grid-row:1/span 2;display:grid;place-items:center;width:46px;height:46px;border:1px solid var(--c-fg);font-family:var(--sd-mono);font-size:15px;font-weight:600;letter-spacing:0;align-self:center}.course-content .sd-ch-label{grid-column:2;font-family:var(--sd-mono);font-size:11px;font-weight:400;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-ch-title{grid-column:2}.course-content .sd-chapter .sd-anchor{grid-column:3;grid-row:2}.course-content .sd-stage+.sd-stage{margin-top:64px;padding-top:40px;border-top:1px solid var(--c-line)}.course-content .sd-stage-head{display:flex;align-items:flex-end;gap:18px;margin:0 0 28px}.course-content .sd-stage-num{flex:none;font-family:var(--sd-display);font-weight:800;font-size:clamp(64px,9vw,112px);line-height:.78;letter-spacing:-.06em;color:transparent;-webkit-text-stroke:1.5px var(--c-line-strong)}.course-content .sd-stage-titles{min-width:0}.course-content .sd-stage-meta{margin:0 0 8px;font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-stage-title{margin:0;font-size:clamp(1.85em,4vw,2.6em);line-height:1}.course-content .sd-stage-prefix{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.course-content .sd-lede{font-family:var(--sd-display);font-weight:700;font-size:1.45em;line-height:1.2;letter-spacing:-.02em}.course-content .sd-fig-cap{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--c-line);font-family:var(--sd-mono);font-size:12px;line-height:1.4;letter-spacing:.06em;text-transform:uppercase;color:var(--c-fg)}.course-content .sd-fig-tag{padding:2px 6px;border:1px solid var(--c-signal);color:var(--c-signal-text);font-size:11px}.course-content .sd-fig-title{min-width:0}.course-content .sd-fig-dim{margin-left:auto;padding:2px 6px;border:1px solid var(--c-line);color:var(--c-fg-3);font-size:11px;text-transform:none}.course-content .sd-art{margin:28px 0 32px;border:1px solid var(--c-line);background:#0a0a0a}.course-content .sd-art img,.course-content .sd-art picture{display:block;width:100%;max-width:none;height:auto;aspect-ratio:8/5}.course-content .sd-art-cap{display:flex;align-items:baseline;gap:10px;padding:10px 14px;border-top:1px solid var(--c-line);background:var(--c-bg);font-family:var(--sd-mono);font-size:12.5px;line-height:1.55;color:var(--c-fg-2)}.course-content .sd-art-cap .sd-fig-tag{flex:none;letter-spacing:.06em}@media (max-width:639px){.course-content .sd-art{margin-left:-16px;margin-right:-16px;border-left:0;border-right:0}.course-content .sd-art-cap{padding:10px 16px}}.course-content .sd-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding:8px 14px;border-bottom:1px solid var(--c-line)}.course-content .sd-seg+.sd-seg{margin-left:-7px}.course-content .sd-fit-note{margin-right:auto;font-family:var(--sd-mono);font-size:11px;color:var(--c-fg-4)}.course-content .sd-emo{display:inline-block;width:2ch;text-align:center}.course-content .sd-blueprint{border:1px solid var(--c-line);background:var(--c-raised)}.course-content .sd-bp-body{overflow:auto;padding:20px;background-image:linear-gradient(var(--sd-grid) 1px,transparent 1px),linear-gradient(90deg,var(--sd-grid) 1px,transparent 1px);background-size:24px 24px;-webkit-overflow-scrolling:touch}.course-content .sd-bp-pre{width:-moz-max-content;width:max-content;margin:0;font-size:var(--sd-bp-size,13px);line-height:1.25;white-space:pre;color:var(--c-fg)}.course-content .sd-legend{display:grid;grid-template-columns:max-content minmax(0,1fr);gap:6px 18px;margin:0;padding:14px;border-top:1px solid var(--c-line);font-size:.86em;line-height:1.55}.course-content .sd-legend dt{font-family:var(--sd-mono);font-weight:600}.course-content .sd-legend dd{margin:0;color:var(--c-fg-2)}.course-content .sd-board,.course-content .sd-note{margin:28px 0;padding:20px 22px 8px;border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-board{border-color:var(--c-line-strong)}.course-content .sd-board p,.course-content .sd-note p{margin:0 0 .9em;color:var(--c-fg-2)}.course-content .sd-board-eyebrow,.course-content .sd-panel-eyebrow{font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase}.course-content .sd-note .sd-panel-eyebrow{color:var(--c-signal-text)}.course-content .sd-board .sd-board-eyebrow{color:var(--c-fg-3)}.course-content .sd-panel-label{margin-top:1.2em!important;font-family:var(--sd-mono);font-size:12px;color:var(--c-fg-3)!important}.course-content .sd-board-title,.course-content .sd-panel-title{font-family:var(--sd-display);font-weight:800;line-height:1.1;letter-spacing:-.03em;color:var(--c-fg)!important}.course-content .sd-panel-title{font-size:1.45em}.course-content .sd-board-title{font-size:clamp(1.4em,3vw,2em)}.course-content .sd-panel-list{color:var(--c-fg-2)}.course-content .sd-board .sd-panel-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin:0 0 14px;padding:0;list-style:none;border-top:1px solid var(--c-line);border-left:1px solid var(--c-line)}.course-content .sd-board .sd-panel-list li{margin:0;padding:10px 12px;border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);font-size:.9em;line-height:1.5}.course-content .sd-n{font-family:var(--sd-mono);font-weight:600;color:var(--c-fg)}.course-content .sd-phrases{display:grid;gap:12px;margin:24px 0}.course-content .sd-say{margin:12px 0;padding:14px 16px;border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-say-label{margin:0 0 6px!important;font-family:var(--sd-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--c-fg-3)!important}.course-content .sd-say-q{margin:0 0 10px;padding:0;border:0}.course-content .sd-say-q p{margin:0;font-family:var(--sd-display);font-weight:700;font-size:1.1em;line-height:1.3;letter-spacing:-.01em;color:var(--c-fg)}.course-content .sd-tree{border:1px solid var(--c-line);background:var(--c-raised)}.course-content .sd-tree-body{overflow:auto;padding:14px 16px}.course-content .sd-tree-pre{width:-moz-max-content;width:max-content;margin:0;font-size:13px;line-height:1.6;white-space:pre}.course-content .sd-tg{color:var(--c-fg-4)}.course-content .sd-tn{color:var(--c-fg)}.course-content .sd-troot{font-weight:600;color:var(--c-fg)}.course-content .sd-tcap{color:var(--c-signal-text)}.course-content .sd-numbers{border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-numbers .sd-fig-tag{border:0;padding:0}.course-content .sd-num-grid{padding:4px 0}.course-content .sd-num-title{margin:0;padding:10px 16px 6px;font-family:var(--sd-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--c-fg)}.course-content .sd-num-row{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr) minmax(0,auto);gap:2px 16px;align-items:baseline;padding:7px 16px;border-bottom:1px solid var(--c-line);font-size:.86em;line-height:1.45}.course-content .sd-num-k{color:var(--c-fg-2)}.course-content .sd-num-w{font-family:var(--sd-mono);font-size:.92em;color:var(--c-fg-3)}.course-content .sd-num-v{font-family:var(--sd-mono);font-weight:600;color:var(--c-fg);text-align:right}.course-content .sd-num-sub .sd-num-k{padding-left:16px}.course-content .sd-num-hl{outline:1px solid var(--c-signal);outline-offset:-1px}.course-content .sd-num-hl .sd-num-v{color:var(--c-signal-text)}.course-content .sd-num-head{margin:0;padding:12px 16px 4px;font-size:.86em;font-weight:600}.course-content .sd-num-note{margin:0;padding:6px 16px;font-size:.84em;color:var(--c-fg-3);white-space:pre-wrap}.course-content .sd-num-gap{height:6px}.course-content .sd-compare{border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-cmp-head{padding:12px 16px;border-bottom:1px solid var(--c-line);font-weight:600;font-size:.95em;line-height:1.5;white-space:pre-wrap}.course-content .sd-cmp-head-chrome{font-family:var(--sd-mono);font-size:11px;font-weight:400;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-cmp-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.course-content .sd-cmp-pane{min-width:0;padding:14px 16px 4px;border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);margin-right:-1px;margin-bottom:-1px}.course-content .sd-cmp-pane[data-pol=neutral]{grid-column:1/-1}.course-content .sd-cmp-col{min-width:0;display:flex;flex-direction:column}.course-content .sd-cmp-col>.sd-cmp-pane{flex:1 1 auto}.course-content .sd-cmp-label .sd-emo{display:none}.course-content .sd-cmp-glyph{display:inline-grid;place-items:center;width:22px;height:22px;margin-bottom:8px;border:1px solid;font-size:12px;line-height:1}.course-content .sd-cmp-pane[data-pol=bad] .sd-cmp-glyph,.course-content .sd-cmp-pane[data-pol=bad] .sd-cmp-label{color:var(--c-bad-text)}.course-content .sd-cmp-pane[data-pol=good] .sd-cmp-glyph,.course-content .sd-cmp-pane[data-pol=good] .sd-cmp-label{color:var(--c-ok)}.course-content .sd-cmp-pane[data-pol=neutral] .sd-cmp-glyph{color:var(--c-fg-3)}.course-content .sd-cmp-label{margin:0 0 6px!important;font-family:var(--sd-mono);font-size:12.5px;font-weight:600;line-height:1.5;white-space:pre-wrap}.course-content .sd-cmp-body{margin:0 0 12px;padding:10px 12px;overflow-x:auto;border:1px solid var(--c-line);background:var(--c-raised);font-size:12.5px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}.course-content .sd-timeline{border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-tl-title{padding:10px 16px;border-bottom:1px solid var(--c-line);font-family:var(--sd-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--c-fg)}.course-content .sd-tl-title-chrome{color:var(--c-fg-3)}.course-content .sd-tl-list{margin:0;padding:12px 16px;list-style:none}.course-content .sd-tl-ev{display:grid;grid-template-columns:minmax(4.5em,max-content) minmax(0,1fr);gap:14px;margin:0}.course-content .sd-tl-t{padding:4px 0;font-family:var(--sd-mono);font-size:.82em;font-weight:600;text-align:right;color:var(--c-fg);white-space:nowrap}.course-content .sd-tl-e{position:relative;padding:3px 0 3px 18px;border-left:1px solid var(--c-line-strong);font-size:.9em;line-height:1.5;color:var(--c-fg-2);white-space:pre-wrap}.course-content .sd-tl-e:before{content:"";position:absolute;left:-5px;top:.75em;width:9px;height:9px;background:var(--c-fg)}.course-content .sd-tl-bad .sd-tl-e{color:var(--c-bad-text)}.course-content .sd-tl-bad .sd-tl-e:before{background:var(--c-bad)}.course-content .sd-tl-note{margin:0;padding:4px 0 4px 1em;font-family:var(--sd-mono);font-size:.8em;color:var(--c-fg-3);white-space:pre-wrap}.course-content .sd-tl-foot{margin:0;padding:10px 16px;border-top:1px solid var(--c-line);font-size:.88em;font-weight:600;white-space:pre-wrap}.course-content .sd-code{border:1px solid var(--c-line);background:var(--c-surface);margin:24px 0}.course-content .sd-code-head{display:flex;align-items:center;gap:10px;min-height:44px;padding:4px 6px 4px 14px;border-bottom:1px solid var(--c-line)}.course-content .sd-code-lang{padding:2px 7px;background:var(--c-fg);color:var(--c-bg);font-family:var(--sd-mono);font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase}.course-content .sd-code-plain .sd-code-lang{background:transparent;color:var(--c-fg-3);border:1px solid var(--c-line)}.course-content .sd-code-meta{flex:1;min-width:0;overflow:hidden;font-family:var(--sd-mono);font-size:12px;color:var(--c-fg-3);text-overflow:ellipsis;white-space:nowrap}.course-content .sd-code-pre{margin:0;padding:14px 0;overflow-x:auto;background:transparent!important;font-size:13px;line-height:1.6;-moz-tab-size:4;-o-tab-size:4;tab-size:4}.course-content .sd-code-pre code{display:block;min-width:-moz-max-content;min-width:max-content;padding:0;border:0;background:none;color:var(--c-fg);font-size:inherit;counter-reset:sdline}.course-content .sd-code-pre .line{display:inline-block;padding-right:16px}.course-content .sd-code-pre .line:before{counter-increment:sdline;content:counter(sdline);display:inline-block;width:2.6em;margin-right:1.2em;text-align:right;color:var(--c-fg-4);-moz-user-select:none;user-select:none;-webkit-user-select:none}.course-content .sd-code-plain .line:before{content:none}.course-content .sd-code-plain .line{padding-left:16px}.course-content .sd-code-pre.shiki span[style]{color:var(--shiki-light)}.dark .course-content .sd-code-pre.shiki span[style]{color:var(--shiki-dark)}.course-content .sd-code-more{display:block;width:100%;min-height:44px;border:0;border-top:1px dashed var(--c-line-strong);background:transparent;color:var(--c-fg);font-family:var(--sd-mono);font-size:12px;cursor:pointer}.course-content .sd-code-more:hover{background:var(--c-surface-2)}.course-content[data-sd-ready] .sd-code[data-collapsed=true] .sd-code-pre{max-height:calc(20 * 1.6em + 14px);overflow-y:hidden}.course-content:not([data-sd-ready]) .sd-code-more{display:none}.course-content .sd-transcript{display:flex;flex-direction:column;gap:12px;margin:28px 0;padding:16px;border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-transcript[data-count="1"]{padding:0;border:0;background:none}.course-content .sd-tr-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.course-content .sd-tr-label{font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-bubble{align-self:flex-start;max-width:88%;padding:12px 14px;border:1px solid var(--c-line);background:var(--c-surface-2)}.course-content .sd-bubble[data-speaker=you]{align-self:flex-end;border-color:var(--c-line-strong);background:var(--c-bg)}.course-content .sd-speaker{display:block;margin-bottom:4px;font-family:var(--sd-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-bubble[data-speaker=you] .sd-speaker{color:var(--c-signal-text);text-align:right}.course-content .sd-bubble ol,.course-content .sd-bubble p,.course-content .sd-bubble ul{margin:0 0 .6em;font-size:.95em}.course-content .sd-bubble>:last-child{margin-bottom:0}.course-content .sd-narration{margin:0;text-align:center;font-size:.9em;color:var(--c-fg-3)}.course-content .sd-transcript[data-hide-you=true] .sd-bubble[data-speaker=you]>:not(.sd-speaker){visibility:hidden;max-height:3em;overflow:hidden}.course-content .sd-transcript[data-hide-you=true] .sd-bubble[data-speaker=you]:after{content:"Your turn: answer out loud";display:block;margin-top:-2.4em;font-family:var(--sd-mono);font-size:12px;color:var(--c-fg-3)}.course-content .sd-reveal{margin:24px 0;padding:18px;border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-rv-head{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;margin-bottom:8px;font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase}.course-content .sd-rv-kicker{color:var(--c-signal-text)}.course-content .sd-rv-status{color:var(--c-fg-3)}.course-content .sd-reveal[data-verdict=knew] .sd-rv-status{color:var(--c-ok)}.course-content .sd-reveal[data-verdict=review] .sd-rv-status{color:var(--c-signal-text)}.course-content .sd-rv-q{margin:0 0 12px;font-size:1.3em}.course-content .sd-rv-intent{display:inline-block;margin:0 0 14px;padding:4px 8px;border:1px solid var(--c-line-strong);font-family:var(--sd-mono);font-size:12px;line-height:1.5;color:var(--c-fg-2)}.course-content .sd-rv-gate{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:14px;border:1px solid var(--c-line);background:var(--c-raised)}.course-content .sd-rv-hint{font-size:.9em;color:var(--c-fg-2)}.course-content .sd-rv-answer{margin-top:14px;padding-top:14px;border-top:1px solid var(--c-line)}.course-content .sd-rv-answer>:last-child{margin-bottom:0}.course-content .sd-rv-verdict{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.course-content .sd-rv-verdict .sd-btn[data-sd-action=knew][aria-pressed=true]{background:var(--c-ok);border-color:var(--c-ok);color:#000}.course-content .sd-rv-verdict .sd-btn[data-sd-action=review][aria-pressed=true]{background:var(--c-signal);border-color:var(--c-signal);color:var(--c-on-signal)}.course-content:not([data-sd-ready]) .sd-rv-gate,.course-content:not([data-sd-ready]) .sd-rv-verdict,.course-content[data-sd-ready] .sd-reveal:not([data-revealed]) .sd-rv-answer,.course-content[data-sd-ready] .sd-reveal:not([data-revealed]) .sd-rv-verdict,.course-content[data-sd-ready] .sd-reveal[data-revealed] .sd-rv-gate{display:none}.course-content .sd-problem{margin:28px 0;padding:18px 18px 6px;border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-pb-eyebrow{margin:0 0 6px!important;font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-signal-text)}.course-content .sd-pb-title{margin:0 0 12px;font-size:1.3em}.course-content .sd-details{margin:14px 0;border:1px solid var(--c-line);background:var(--c-raised)}.course-content .sd-details-sum{display:flex;align-items:center;gap:10px;min-height:44px;padding:8px 14px;font-size:.92em;font-weight:600;list-style:none;cursor:pointer}.course-content .sd-details-sum::-webkit-details-marker{display:none}.course-content .sd-details-sum:before{content:"+";font-family:var(--sd-mono);color:var(--c-signal-text)}.course-content .sd-details[open]>.sd-details-sum:before{content:"\2212"}.course-content .sd-details-body{padding:12px 14px 2px;border-top:1px solid var(--c-line)}.course-content .sd-callout{margin:28px 0;padding:18px 18px 6px;border:1px solid var(--c-line-strong);background:var(--c-surface)}.course-content .sd-callout[data-variant=tip]{border-color:var(--c-signal)}.course-content .sd-callout-chip{display:inline-block;margin-bottom:10px;padding:3px 8px;border:1px solid;font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;line-height:1.5}.course-content .sd-callout[data-variant=tip] .sd-callout-chip{background:var(--c-signal);border-color:var(--c-signal);color:var(--c-on-signal);font-weight:600}.course-content .sd-callout[data-variant=pitfall] .sd-callout-chip{color:var(--c-bad-text)}.course-content .sd-callout[data-variant=takeaway] .sd-callout-chip{background:var(--c-fg);border-color:var(--c-fg);color:var(--c-bg)}.course-content .sd-callout[data-variant=say] .sd-callout-chip{color:var(--c-fg-2)}.course-content .sd-callout-title{margin:0 0 12px;font-size:1.3em}.course-content .sd-callout[data-variant=takeaway] ol{padding-left:0;list-style:none;counter-reset:sdtk}.course-content .sd-callout[data-variant=takeaway] ol>li{counter-increment:sdtk;display:grid;grid-template-columns:2.2em minmax(0,1fr)}.course-content .sd-callout[data-variant=takeaway] ol>li:before{content:counter(sdtk,decimal-leading-zero);font-family:var(--sd-mono);font-size:.85em;color:var(--c-signal-text);padding-top:.15em}.course-content .sd-callout[data-variant=takeaway] ol>li>*{grid-column:2}.course-content .sd-insight{margin:24px 0;padding:14px 16px;border:1px solid var(--c-line-strong);background:var(--c-surface)}.course-content .sd-insight>p{margin:0}.course-content .sd-insight>p>strong:first-child{display:inline-block;margin-right:8px;padding:1px 7px;background:var(--c-fg);color:var(--c-bg);font-family:var(--sd-mono);font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;vertical-align:.15em}.course-content .sd-pullquote{margin:40px 0;padding:0;border:0}.course-content .sd-pullquote p{margin:0;font-family:var(--sd-display);font-weight:800;font-size:clamp(1.45em,3.2vw,2.1em);line-height:1.05;letter-spacing:-.035em;color:var(--c-fg)}.course-content .sd-pullquote strong{font-weight:inherit}.course-content .sd-proscons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin:24px 0;border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-pc-col{min-width:0;padding:14px 16px 4px}.course-content .sd-pc-col[data-pol=con]{border-left:1px solid var(--c-line)}.course-content .sd-pc-label{margin:0 0 8px!important;font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase}.course-content .sd-pc-label strong{font-weight:500}.course-content .sd-pc-col ol,.course-content .sd-pc-col ul{padding-left:0;list-style:none}.course-content .sd-pc-col li{position:relative;padding-left:1.3em;font-size:.92em}.course-content .sd-pc-col li:before{position:absolute;left:0;font-family:var(--sd-mono)}.course-content .sd-pc-col[data-pol=pro] li:before{content:"+";color:var(--c-ok)}.course-content .sd-pc-col[data-pol=con] li:before{content:"\2212";color:var(--c-bad-text)}.course-content .sd-pc-foot{grid-column:1/-1;padding:12px 16px 2px;border-top:1px solid var(--c-line)}@media (max-width:560px){.course-content .sd-proscons{grid-template-columns:minmax(0,1fr)}.course-content .sd-pc-col[data-pol=con]{border-left:0;border-top:1px solid var(--c-line)}}.course-content .sd-eyebrow{margin:1.6em 0 .5em;font-family:var(--sd-mono);font-size:11px;line-height:1.5;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-eyebrow strong{font-weight:500;color:inherit}.course-content .sd-dl{margin:20px 0;border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-dl-row{margin:0;padding:10px 16px;border-bottom:1px solid var(--c-line);font-size:.95em;line-height:1.6}.course-content .sd-dl-row:last-child{border-bottom:0}.course-content .sd-dl-row>strong:first-child{display:block;margin-bottom:2px;font-family:var(--sd-mono);font-size:11px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-table{margin:24px 0;overflow-x:auto;border:1px solid var(--c-line);-webkit-overflow-scrolling:touch}.course-content .sd-table table{width:100%;border-collapse:separate;border-spacing:0;font-size:.88em;line-height:1.5}.course-content .sd-table th{padding:10px 12px;border-bottom:1px solid var(--c-line);background:var(--c-surface-2);font-family:var(--sd-mono);font-size:11px;font-weight:500;letter-spacing:.06em;text-align:left;text-transform:uppercase;color:var(--c-fg-3);white-space:nowrap}.course-content .sd-table td{min-width:7em;padding:10px 12px;border-bottom:1px solid var(--c-line);background:var(--c-surface);vertical-align:top}.course-content .sd-table tr:last-child td{border-bottom:0}.course-content .sd-table[data-sticky] td:first-child,.course-content .sd-table[data-sticky] th:first-child{position:sticky;left:0;z-index:1;border-right:1px solid var(--c-line);background:var(--c-surface-2)}.course-content .sd-table[data-sticky] td:first-child{font-weight:600;color:var(--c-fg)}.course-content .sd-yes{color:var(--c-ok)}.course-content .sd-no{color:var(--c-bad-text)}.course-content .sd-checklist{margin:24px 0;border:1px solid var(--c-line);background:var(--c-surface)}.course-content .sd-ck-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 12px;padding:12px 16px;border-bottom:1px solid var(--c-line)}.course-content .sd-ck-title{font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-ck-count{font-family:var(--sd-mono);font-size:12px;color:var(--c-fg)}.course-content .sd-ck-bar{position:relative;grid-column:1/-1;height:3px;background:var(--c-line)}.course-content .sd-ck-fill{position:absolute;inset:0 auto 0 0;width:var(--sd-ck,0);background:var(--c-signal);transition:width .2s ease-out}.course-content .sd-ck-list{margin:0;padding:0;list-style:none}.course-content .sd-ck-item{display:flex;align-items:flex-start;gap:12px;margin:0;padding:10px 16px;border-bottom:1px solid var(--c-line)}.course-content .sd-ck-item:last-child{border-bottom:0}.course-content .sd-ck-box{position:relative;flex:none;display:grid;place-items:center;width:20px;height:20px;margin:.2em 0 0;border:1px solid var(--c-line-strong);background:transparent;-moz-appearance:none;appearance:none;-webkit-appearance:none;cursor:pointer}.course-content .sd-ck-box:before{content:"";position:absolute;inset:-12px}.course-content .sd-ck-box:checked{border-color:var(--c-signal);background:var(--c-signal)}.course-content .sd-ck-box:checked:after{content:"\2713";font-size:13px;line-height:1;color:var(--c-on-signal)}.course-content .sd-ck-text{min-width:0;flex:1}.course-content .sd-ck-text>p:last-child,.course-content .sd-ck-text>ul:last-child{margin-bottom:0}.course-content .sd-ck-item:has(.sd-ck-box:checked) .sd-ck-text{color:var(--c-fg-3)}.course-content .sd-resources{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:8px;margin:16px 0 24px;padding:0;list-style:none}.course-content .sd-res{margin:0;padding:12px 14px;border:1px solid var(--c-line);background:var(--c-surface);font-size:.86em;line-height:1.5;color:var(--c-fg-2)}.course-content .sd-res-type{display:inline-block;margin-bottom:8px;padding:1px 6px;border:1px solid var(--c-line-strong);font-family:var(--sd-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-res p{margin:0 0 .4em}.course-content .sd-res strong:first-child{color:var(--c-fg)}.course-content .sd-upnext{margin:40px 0;padding:18px 20px;border:1px solid var(--c-signal);background:var(--c-surface)}.course-content .sd-upnext-end{margin:0 0 10px;font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-upnext-end em{font-style:normal}.course-content .sd-upnext-next{margin:0;font-size:.95em;color:var(--c-fg-2)}.course-content .sd-upnext-next>strong:first-child{display:block;margin-bottom:4px;font-family:var(--sd-mono);font-size:11px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--c-signal-text)}mark.sd-mark{--hl-tint:rgba(255,107,43,0.22);--hl-sw:#ff6b2b;padding:0;background:var(--hl-tint);color:inherit;box-shadow:inset 0 -2px 0 var(--hl-sw);cursor:pointer}mark.sd-mark[data-hl=white]{--hl-tint:rgba(11,11,11,0.08);--hl-sw:#55555b}.dark mark.sd-mark[data-hl=white]{--hl-tint:rgba(243,242,238,0.13);--hl-sw:#f3f2ee}mark.sd-mark[data-hl=grey]{--hl-tint:rgba(142,142,149,0.24);--hl-sw:#8e8e95}mark.sd-mark[data-hl=teal]{--hl-tint:rgba(58,183,191,0.2);--hl-sw:#3ab7bf}mark.sd-mark[data-hl=marked]{--hl-tint:rgba(163,163,168,0.18);--hl-sw:#a3a3a8}mark.sd-mark[data-note-id]{box-shadow:none;-webkit-text-decoration:underline dashed var(--hl-sw);text-decoration:underline dashed var(--hl-sw);text-decoration-thickness:2px;text-underline-offset:4px}mark.sd-mark:hover{filter:brightness(1.15)}pre mark,pre mark.sd-mark{padding:0!important;margin:0!important;border:0!important;box-shadow:none;text-decoration:none}.sd-fs{position:fixed;inset:0;z-index:90;display:flex;flex-direction:column;background:var(--c-raised);color:var(--c-fg);animation:sd-pop .16s ease-out}.sd-fs-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:calc(10px + env(safe-area-inset-top, 0px)) 16px 10px;border-bottom:1px solid var(--c-line);font-family:var(--font-geist-mono),ui-monospace,monospace;font-size:12px;letter-spacing:.06em;text-transform:uppercase}.sd-fs-tag{color:var(--c-signal-text)}.sd-fs-body{flex:1;overflow:auto;padding:24px;touch-action:pan-x pan-y pinch-zoom}.sd-fs-body pre{width:-moz-max-content;width:max-content;margin:0 auto;font-family:var(--font-geist-mono),ui-monospace,monospace;font-size:16px;line-height:1.3;white-space:pre;color:var(--c-fg)}@keyframes sd-pop{0%{transform:scale(.98);opacity:0}to{transform:none;opacity:1}}.course-content :is(.sd-table,.sd-code-pre,.sd-bp-body)[data-sd-scroll=right]{-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 40px),rgba(0,0,0,.18));mask-image:linear-gradient(90deg,#000 calc(100% - 40px),rgba(0,0,0,.18))}.course-content :is(.sd-code-pre,.sd-bp-body)[data-sd-scroll=left]{-webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.18),#000 32px);mask-image:linear-gradient(90deg,rgba(0,0,0,.18),#000 32px)}.course-content :is(.sd-code-pre,.sd-bp-body)[data-sd-scroll="left right"]{-webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.18),#000 32px,#000 calc(100% - 40px),rgba(0,0,0,.18));mask-image:linear-gradient(90deg,rgba(0,0,0,.18),#000 32px,#000 calc(100% - 40px),rgba(0,0,0,.18))}.course-content .sd-table[data-sd-scroll="left right"]{-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 40px),rgba(0,0,0,.18));mask-image:linear-gradient(90deg,#000 calc(100% - 40px),rgba(0,0,0,.18))}.course-content .sd-bp-body,.course-content .sd-code-pre,.course-content .sd-table{overscroll-behavior-x:contain}@media (hover:none){.course-content .sd-anchor{padding:12px 8px;margin:-12px -8px -12px 0}}@media (max-width:640px){.course-content{line-height:1.68}.course-content p{margin-bottom:1em}.course-content .sd-h{margin-top:1.8em}.course-content .sd-h1{font-size:1.6em}.course-content .sd-h2{font-size:1.42em}.course-content .sd-h3{font-size:1.24em}.course-content .sd-h4{font-size:1.08em}.course-content .sd-chapter{-moz-column-gap:12px;column-gap:12px;margin-top:2em}.course-content .sd-ch-box{width:40px;height:40px;font-size:14px}.course-content .sd-stage+.sd-stage{margin-top:48px;padding-top:32px}.course-content .sd-stage-num{font-size:52px}.course-content .sd-stage-title{margin:0;font-size:clamp(1.5em,7.4vw,2.1em);line-height:1.02}.course-content .sd-lede{font-size:1.28em}.course-content hr{margin:36px auto}.course-content .sd-table td,.course-content .sd-table th{padding:9px 10px}.course-content .sd-table td{min-width:6.5em}.course-content .sd-code-pre .line:before{width:2em;margin-right:.9em}.course-content .sd-fig-cap{padding:10px 12px}.course-content .sd-toolbar{padding:8px 12px}.course-content .sd-stage-head{gap:12px}.course-content .sd-bubble{max-width:100%}.course-content .sd-num-row{grid-template-columns:minmax(0,1fr) auto}.course-content .sd-num-w{grid-column:1/-1;grid-row:2}.course-content .sd-num-w:empty{display:none}.course-content .sd-callout,.course-content .sd-problem,.course-content .sd-reveal,.course-content .sd-transcript{padding-left:14px;padding-right:14px}.course-content .sd-bp-body{padding:12px}}.course-content .sd-quiz{--q-ok:var(--c-ok);--q-bad:var(--c-bad);margin:2.2rem 0;border:1px solid var(--c-line-strong);background:var(--c-surface);font-size:.94em;line-height:1.55}.course-content .sd-quiz[data-aced]{border-color:var(--c-signal)}.course-content .sd-quiz-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 12px;padding:8px 12px;border-bottom:1px solid var(--c-line);font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase}.course-content .sd-quiz-tag{padding:2px 6px;background:var(--c-signal);color:var(--c-on-signal);font-weight:600}.course-content .sd-quiz-score{color:var(--c-fg-3);font-variant-numeric:tabular-nums}.course-content .sd-quiz[data-complete] .sd-quiz-score{color:var(--c-fg);font-weight:600}.course-content .sd-quiz-title{margin:0;padding:14px 16px 0;font-family:var(--sd-display);font-size:1.15em;font-weight:700;letter-spacing:-.02em;line-height:1.2;color:var(--c-fg)}.course-content .sd-quiz-qs{list-style:none;margin:0;padding:4px 16px}.course-content .sd-quiz-q{margin:0;padding:14px 0 16px;border-bottom:1px dashed var(--c-line)}.course-content .sd-quiz-q:last-child{border-bottom:0}.course-content .sd-quiz-prompt{margin:0 0 12px;font-weight:600;color:var(--c-fg)}.course-content .sd-quiz-qn{display:inline-block;margin-right:4px;padding:0 5px;border:1px solid var(--c-line-strong);font-family:var(--sd-mono);font-size:11px;font-weight:500;letter-spacing:.04em;line-height:18px;vertical-align:2px;color:var(--c-fg-3)}.course-content .sd-quiz-opts{list-style:none;margin:0;padding:0;display:grid;gap:8px}.course-content .sd-quiz-opt{margin:0}.course-content .sd-quiz-btn{display:flex;align-items:flex-start;gap:12px;width:100%;min-height:48px;padding:11px 12px;border:1px solid var(--c-line);background:var(--c-bg);color:var(--c-fg);font:inherit;text-align:left;cursor:pointer;transition:border-color .12s ease,background-color .12s ease,opacity .2s ease}.course-content .sd-quiz-btn:disabled{cursor:default;opacity:1}.course-content .sd-quiz:not([data-quiz-ready]) .sd-quiz-btn{border-color:transparent;background:transparent;min-height:0;padding:4px 0}.course-content .sd-quiz[data-quiz-ready] .sd-quiz-btn:not(:disabled):hover{border-color:var(--c-fg-4);background:var(--c-surface-2)}.course-content .sd-quiz-btn:focus-visible{outline:2px solid var(--c-signal);outline-offset:2px}.course-content .sd-quiz-key{flex:none;display:inline-grid;place-items:center;width:24px;height:24px;margin-top:1px;border:1px solid var(--c-line-strong);font-family:var(--sd-mono);font-size:12px;font-weight:600;line-height:1;color:var(--c-fg-2)}.course-content .sd-quiz-txt{flex:1 1 auto;min-width:0}.course-content .sd-quiz-mark{flex:none;align-self:center;font-family:var(--sd-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase}.course-content .sd-quiz-mark:empty{display:none}.course-content .sd-quiz-q:not([data-state=idle]) .sd-quiz-btn:not([data-picked]):not([data-correct]){opacity:.55}.course-content .sd-quiz-btn[data-correct]{border-color:var(--q-ok);background:color-mix(in srgb,var(--q-ok) 10%,transparent)}.course-content .sd-quiz-btn[data-correct] .sd-quiz-key{border-color:var(--q-ok);background:var(--q-ok);color:#000}.course-content .sd-quiz-btn[data-correct] .sd-quiz-mark{color:var(--q-ok)}.course-content .sd-quiz-btn[data-picked]:not([data-correct]){border-color:var(--q-bad);background:color-mix(in srgb,var(--q-bad) 10%,transparent)}.course-content .sd-quiz-btn[data-picked]:not([data-correct]) .sd-quiz-key{border-color:var(--q-bad);background:var(--q-bad);color:#fff}.course-content .sd-quiz-btn[data-picked]:not([data-correct]) .sd-quiz-mark{color:var(--c-bad-text)}.course-content .sd-quiz-q[data-state=wrong] .sd-quiz-btn[data-correct]:not([data-picked]){border-style:dashed;background:transparent}@keyframes sd-quiz-shake{0%,to{transform:translateX(0)}20%{transform:translateX(-6px)}40%{transform:translateX(5px)}60%{transform:translateX(-3px)}80%{transform:translateX(2px)}}@keyframes sd-quiz-glow{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--q-ok) 55%,transparent)}to{box-shadow:0 0 0 10px color-mix(in srgb,var(--q-ok) 0%,transparent)}}.course-content .sd-quiz-q[data-fresh][data-state=wrong] .sd-quiz-btn[data-picked]{animation:sd-quiz-shake .42s ease-in-out}.course-content .sd-quiz-q[data-fresh][data-state=right] .sd-quiz-btn[data-picked]{animation:sd-quiz-glow .7s ease-out}@media (prefers-reduced-motion:reduce){.course-content .sd-quiz-q[data-fresh] .sd-quiz-btn[data-picked]{animation:none}}.course-content .sd-quiz-status{margin:10px 0 0;font-family:var(--sd-mono);font-size:12px;letter-spacing:.04em}.course-content .sd-quiz-status:empty{display:none}.course-content .sd-quiz-q[data-state=right] .sd-quiz-status{color:var(--q-ok)}.course-content .sd-quiz-q[data-state=wrong] .sd-quiz-status{color:var(--c-bad-text)}.course-content .sd-quiz-why{margin:10px 0 0}.course-content .sd-quiz-why-sum{display:inline-flex;align-items:center;gap:6px;min-height:40px;cursor:pointer;list-style:none;font-family:var(--sd-mono);font-size:12px;letter-spacing:.04em;color:var(--c-fg-3)}.course-content .sd-quiz-why-sum::-webkit-details-marker{display:none}.course-content .sd-quiz-why-sum:before{content:"▸";color:var(--c-fg-4)}.course-content .sd-quiz-why[open]>.sd-quiz-why-sum:before{content:"▾"}.course-content .sd-quiz-why-sum:hover{color:var(--c-fg)}.course-content .sd-quiz-q[data-state=idle] .sd-quiz-why:not([open]) .sd-quiz-why-sum{color:var(--c-fg-4)}.course-content .sd-quiz-why-body{margin-top:4px;padding:2px 0 2px 14px;border-left:2px solid var(--c-line-strong);color:var(--c-fg-2)}.course-content .sd-quiz-why-body p{margin:0 0 .6em}.course-content .sd-quiz-why-body p:last-child{margin-bottom:0}.course-content .sd-quiz-answer{font-family:var(--sd-mono);font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--c-fg)}.course-content .sd-quiz[data-quiz-ready] .sd-quiz-q[data-state=idle] .sd-quiz-answer{color:var(--c-fg-3)}.course-content .sd-quiz-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 12px;padding:10px 16px 12px;border-top:1px solid var(--c-line)}.course-content .sd-quiz:not([data-started]) .sd-quiz-foot{display:none}.course-content .sd-quiz-result{font-family:var(--sd-mono);font-size:12px;letter-spacing:.04em;color:var(--c-fg-2)}.course-content .sd-quiz[data-aced] .sd-quiz-result{color:var(--c-signal-text);font-weight:600}.course-content .sd-quiz-retry{margin-left:auto}.course-content .sd-practice{margin:2rem 0;border:1px dashed var(--c-line-strong);background:var(--c-bg);font-size:15px;line-height:1.45}.course-content .sd-practice-quiz{margin:0;border-width:1px 0 0}.course-content .sd-practice-label{margin:0;padding:10px 16px 0;font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-signal-text)}.course-content .sd-practice-list{list-style:none;margin:0;padding:8px;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr));gap:6px}.course-content .sd-practice-item{margin:0}.course-content .sd-practice-link{display:grid;grid-template-columns:1fr auto;gap:2px 12px;height:100%;padding:10px;border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-fg);text-decoration:none}.course-content .sd-practice-link:hover{border-color:var(--c-signal);color:var(--c-fg)}.course-content .sd-practice-kind{grid-column:1/-1;font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sd-practice-name{font-family:var(--sd-display);font-size:18px;font-weight:700;letter-spacing:-.02em}.course-content .sd-practice-go{grid-row:2/span 2;grid-column:2;align-self:end;font-family:var(--sd-mono);font-size:12px;color:var(--c-signal-text)}.course-content .sd-practice-hook{font-size:14px;color:var(--c-fg-3)}.course-content{--sdb-sky:#1d6fb8;--sdb-amber:#a16207;--sdb-ok-text:#15803d}.dark .course-content{--sdb-sky:#4fb3ff;--sdb-amber:#f5b83d;--sdb-ok-text:#3dd68c}.course-content .sdb,.course-content .sdb-col{--sdb-tone:var(--c-line-strong);--sdb-tone-text:var(--c-fg-3)}.course-content .sdb-callout[data-type=key],.course-content [data-tone=core]{--sdb-tone:var(--c-signal);--sdb-tone-text:var(--c-signal-text)}.course-content .sdb-callout[data-type=tip],.course-content [data-tone=info]{--sdb-tone:var(--sdb-sky);--sdb-tone-text:var(--sdb-sky)}.course-content .sdb-callout[data-type=ok],.course-content [data-tone=ok]{--sdb-tone:var(--c-ok);--sdb-tone-text:var(--sdb-ok-text)}.course-content .sdb-callout[data-type=bad],.course-content [data-tone=bad]{--sdb-tone:var(--c-bad);--sdb-tone-text:var(--c-bad-text)}.course-content .sdb-callout[data-type=warn],.course-content [data-tone=warn]{--sdb-tone:var(--sdb-amber);--sdb-tone-text:var(--sdb-amber)}.course-content .sdb-callout[data-type=info],.course-content [data-tone=note]{--sdb-tone:var(--c-line-strong);--sdb-tone-text:var(--c-fg-3)}.course-content .sdb{container-type:inline-size;position:relative;margin:32px 0;border:1px solid var(--c-line);background:var(--c-surface);font-size:.94em;line-height:1.65}.course-content .sdb .sdb{margin:16px 0;font-size:1em}.course-content .sdb-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 10px;padding:11px 16px 10px;border-bottom:1px solid var(--c-line);font-family:var(--sd-mono);font-size:12px;font-weight:500;line-height:1.45;letter-spacing:.07em;text-transform:uppercase;color:var(--c-fg)}.course-content .sdb-head:before{content:"";flex:none;align-self:center;width:7px;height:7px;background:var(--sdb-tone)}.course-content .sdb-title{min-width:0;flex:1 1 12em}.course-content .sdb-head code{font-size:1em;text-transform:none;letter-spacing:0}.course-content .sdb-kicker{flex:none;padding:1px 6px;border:1px solid var(--c-line-strong);font-size:10.5px;color:var(--c-fg-3)}.course-content .sdb-body{padding:16px 18px 2px;font-size:1em}.course-content .sdb-body:after{content:"";display:block;height:14px}.course-content .sdb-body>:last-child,.course-content .sdb-callout-main>:last-child,.course-content .sdb-col-body>:last-child,.course-content .sdb-compare-foot>:last-child,.course-content .sdb-compare-intro>:last-child,.course-content .sdb-tl-event>:last-child{margin-bottom:0}.course-content .sdb-body>:first-child,.course-content .sdb-col-body>:first-child{margin-top:0}.course-content .sdb p{margin:0 0 .8em}.course-content .sdb ol,.course-content .sdb ul{margin:0 0 .9em;padding-left:1.25em}.course-content .sdb li{margin:.2em 0}.course-content .sdb ul>li::marker{color:var(--sdb-tone-text)}.course-content .sdb li>ol,.course-content .sdb li>ul{margin:.2em 0 .3em}.course-content .sdb blockquote{margin:.9em 0;padding:.1em 0 .1em .9em;border-left:2px solid var(--sdb-tone)}.course-content .sdb .sd-code,.course-content .sdb .sd-mermaid,.course-content .sdb .sd-table{margin:14px 0}.course-content .sdb hr{width:auto;margin:18px 0}.course-content .sdb-h{margin:1.3em 0 .55em;padding-top:.9em;border-top:1px dashed var(--c-line);font-family:var(--sd-mono);font-size:12px;font-weight:600;line-height:1.45;letter-spacing:.07em;text-transform:uppercase;color:var(--sdb-tone-text)}.course-content .sdb [data-tone=note] .sdb-h,.course-content .sdb-panel[data-tone=note] .sdb-h{color:var(--c-fg-2)}.course-content .sdb-body>.sdb-h:first-child,.course-content .sdb-col-body>.sdb-h:first-child{padding-top:0;border-top:0}.course-content .sdb-h code{text-transform:none}.course-content .sdb-chip-sep,.course-content .sdb-stats .sdb-dash,.course-content .sdb-steps .sdb-dash,.course-content .sdb-tl-item>.sdb-dash{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.course-content .sdb-panel{border-top:2px solid var(--sdb-tone)}.course-content .sdb-panel[data-tone=note]{border-top-color:var(--c-line-strong)}.course-content .sdb-panel:not([data-titled])>.sdb-body{padding-top:18px}.course-content .sdb-cols{display:grid;grid-template-columns:minmax(0,1fr)}.course-content .sdb-col{position:relative;min-width:0;display:flex;flex-direction:column;border-top:2px solid var(--sdb-tone)}.course-content .sdb-col+.sdb-col{margin-top:24px}.course-content .sdb-col+.sdb-col:before{content:"";position:absolute;left:0;right:0;top:-14px;height:1px;background:var(--c-line)}.course-content .sdb-col-head{display:flex;align-items:center;gap:10px;padding:12px 16px 0}.course-content .sdb-col-title{margin:0!important;min-width:0;font-family:var(--sd-mono);font-size:12.5px;font-weight:600;line-height:1.45;letter-spacing:.05em;text-transform:uppercase;color:var(--sdb-tone-text)}.course-content .sdb-col[data-tone=note] .sdb-col-title{color:var(--c-fg)}.course-content .sdb-col-title code{text-transform:none;letter-spacing:0}.course-content .sdb-glyph{flex:none;display:inline-grid;place-items:center;width:22px;height:22px;border:1px solid;color:var(--sdb-tone-text);background:color-mix(in srgb,var(--sdb-tone) 10%,transparent)}.course-content .sdb-glyph svg{width:13px;height:13px}.course-content .sdb-swatch{flex:none;width:8px;height:8px;background:var(--sdb-tone)}.course-content .sdb-col[data-tone=note] .sdb-swatch{background:var(--c-fg-3)}.course-content .sdb-col-body{flex:1 1 auto;padding:10px 16px 16px}.course-content [data-contrast] .sdb-col[data-tone=bad] .sdb-col-body,.course-content [data-contrast] .sdb-col[data-tone=ok] .sdb-col-body{background:linear-gradient(color-mix(in srgb,var(--sdb-tone) 5%,transparent),transparent 120px)}.course-content [data-contrast] .sdb-col[data-tone=bad] .sdb-col-head,.course-content [data-contrast] .sdb-col[data-tone=ok] .sdb-col-head{background:color-mix(in srgb,var(--sdb-tone) 5%,transparent)}.course-content .sdb-vs{position:absolute;z-index:1;left:50%;top:-14px;transform:translate(-50%,-50%);padding:0 7px;border:1px solid var(--c-line);background:var(--c-surface);font-family:var(--sd-mono);font-size:10.5px;line-height:18px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-fg-3)}.course-content .sdb-compare-foot,.course-content .sdb-compare-intro{padding:12px 16px;font-size:.97em;color:var(--c-fg-2)}.course-content .sdb-compare-intro{border-bottom:1px solid var(--c-line)}.course-content .sdb-compare-foot{border-top:1px solid var(--c-line)}@container (min-width: 540px){.course-content .sdb-compare:is([data-cols="2"],[data-cols="3"])>.sdb-cols{grid-template-columns:repeat(var(--sdb-n,2),minmax(0,1fr))}.course-content .sdb-compare[data-cols="3"]>.sdb-cols{--sdb-n:3}.course-content .sdb-compare:is([data-cols="4"],[data-cols="5"],[data-cols="6"])>.sdb-cols{grid-template-columns:repeat(2,minmax(0,1fr))}.course-content .sdb-compare>.sdb-cols>.sdb-col+.sdb-col{margin-top:0;border-left:1px solid var(--c-line)}.course-content .sdb-compare>.sdb-cols>.sdb-col+.sdb-col:before{display:none}.course-content .sdb-compare>.sdb-cols>.sdb-col>.sdb-vs{left:0;top:20px;transform:translate(-50%,-50%)}.course-content .sdb-compare:is([data-cols="4"],[data-cols="5"],[data-cols="6"])>.sdb-cols>.sdb-col:nth-child(odd){border-left:0}.course-content .sdb-compare:is([data-cols="4"],[data-cols="5"],[data-cols="6"])>.sdb-cols>.sdb-col:nth-child(odd)>.sdb-vs{display:none}}@container (max-width: 639px){.course-content .sdb-compare[data-cols="3"]>.sdb-cols{grid-template-columns:minmax(0,1fr)}.course-content .sdb-compare[data-cols="3"]>.sdb-cols>.sdb-col+.sdb-col{margin-top:24px;border-left:0}.course-content .sdb-compare[data-cols="3"]>.sdb-cols>.sdb-col+.sdb-col:before{display:block}.course-content .sdb-compare[data-cols="3"]>.sdb-cols>.sdb-col>.sdb-vs{left:50%;top:-14px}}@container (min-width: 980px){.course-content .sdb-compare:is([data-cols="4"])>.sdb-cols{grid-template-columns:repeat(4,minmax(0,1fr))}.course-content .sdb-compare[data-cols="4"]>.sdb-cols>.sdb-col:nth-child(n){border-left:1px solid var(--c-line)}.course-content .sdb-compare[data-cols="4"]>.sdb-cols>.sdb-col:first-child{border-left:0}.course-content .sdb-compare[data-cols="4"]>.sdb-cols>.sdb-col>.sdb-vs{display:block}}.course-content .sdb .sdb-step-list{margin:0 0 .9em;padding:0;list-style:none;counter-reset:sdbstep}.course-content .sdb-step{position:relative;margin:0;padding:0 0 18px 46px;counter-increment:sdbstep}.course-content .sdb-step:before{content:counter(sdbstep,decimal-leading-zero);position:absolute;left:0;top:0;display:grid;place-items:center;width:30px;height:30px;border:1px solid var(--c-line-strong);background:var(--c-surface-2);font-family:var(--sd-mono);font-size:12px;font-weight:600;line-height:1;color:var(--c-fg)}.course-content .sdb-step:first-child:before{border-color:var(--c-signal);background:var(--c-signal);color:var(--c-on-signal)}.course-content .sdb-step:after{content:"";position:absolute;left:15px;top:34px;bottom:4px;width:1px;background:var(--c-line-strong)}.course-content .sdb-step:last-child{padding-bottom:2px}.course-content .sdb-step:last-child:after{display:none}.course-content .sdb-step-head{min-height:30px;padding-top:2px;margin-bottom:4px}.course-content .sdb-step-title{font-weight:650;color:var(--c-fg)}.course-content .sdb-step-title strong{font-weight:inherit}.course-content .sdb-step-desc{display:block;color:var(--c-fg-2)}.course-content .sdb-step>ol,.course-content .sdb-step>p,.course-content .sdb-step>ul{margin-top:4px;margin-bottom:4px}.course-content .sdb-sublist{font-size:.92em;color:var(--c-fg-2)}.course-content .sdb-sublist>li{margin:.12em 0}.course-content .sdb-chips{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 4px!important;padding:0!important;list-style:none}.course-content .sdb-chips>li{margin:0}.course-content .sdb-chips-one{display:contents}.course-content .sdb-chip{display:inline-block;padding:2px 8px;border:1px solid var(--c-line);background:var(--c-surface-2);font-size:.82em;line-height:1.55;color:var(--c-fg-2)}.course-content .sdb-chip code{padding:0;border:0;background:none}@container (min-width: 600px){.course-content .sdb-steps[data-dir=right] .sdb-step-list{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);gap:0}.course-content .sdb-steps[data-dir=right] .sdb-step{padding:44px 18px 4px 0}.course-content .sdb-steps[data-dir=right] .sdb-step:after{display:block;left:38px;right:12px;top:15px;bottom:auto;width:auto;height:1px}.course-content .sdb-steps[data-dir=right] .sdb-step:last-child:after{display:none}.course-content .sdb-steps[data-dir=right] .sdb-step:not(:last-child)>.sdb-step-head:after{content:"";position:absolute;right:12px;top:11px;width:8px;height:8px;border-top:1px solid var(--c-fg-3);border-right:1px solid var(--c-fg-3);transform:rotate(45deg)}.course-content .sdb-steps[data-dir=right] .sdb-step-head{min-height:0;padding-top:0}.course-content .sdb-steps[data-dir=right] .sdb-step-desc{margin-top:2px;font-size:.92em}}.course-content .sdb-tree-root{margin:0 0 .9em;overflow-x:auto;overscroll-behavior-x:contain}.course-content .sdb-tree-list{margin:0!important;padding:0!important;list-style:none}.course-content .sdb-tree-item{position:relative;margin:0!important}.course-content .sdb-tree-item::marker{content:none}.course-content .sdb-tree-item .sdb-tree-list{margin-left:4px!important}.course-content .sdb-tree-item .sdb-tree-item{padding-left:22px}.course-content .sdb-tree-item .sdb-tree-item:before{content:"";position:absolute;left:0;top:0;bottom:0;border-left:1px solid var(--c-line-strong)}.course-content .sdb-tree-item .sdb-tree-item:last-child:before{bottom:auto;height:calc(.4em + 11px)}.course-content .sdb-tree-item .sdb-tree-item:after{content:"";position:absolute;left:0;top:calc(.4em + 11px);width:15px;border-top:1px solid var(--c-line-strong)}.course-content .sdb-tree-line{position:relative;display:block;padding:3px 0;line-height:1.55}.course-content .sdb-tree-root>.sdb-tree-list>.sdb-tree-item{padding-left:18px}.course-content .sdb-tree-root>.sdb-tree-list>.sdb-tree-item>.sdb-tree-fold>.sdb-tree-line:before,.course-content .sdb-tree-root>.sdb-tree-list>.sdb-tree-item>.sdb-tree-line:before{content:"";position:absolute;left:-18px;top:calc(.4em + 5px);width:7px;height:7px;background:var(--sdb-tone,var(--c-fg-3))}.course-content .sdb-tree:not([data-tone]) .sdb-tree-root>.sdb-tree-list>.sdb-tree-item>.sdb-tree-fold>.sdb-tree-line:before,.course-content .sdb-tree:not([data-tone]) .sdb-tree-root>.sdb-tree-list>.sdb-tree-item>.sdb-tree-line:before,.course-content .sdb-tree[data-tone=note] .sdb-tree-root>.sdb-tree-list>.sdb-tree-item>.sdb-tree-fold>.sdb-tree-line:before,.course-content .sdb-tree[data-tone=note] .sdb-tree-root>.sdb-tree-list>.sdb-tree-item>.sdb-tree-line:before{background:var(--c-signal)}.course-content .sdb-tree-root>.sdb-tree-list>.sdb-tree-item+.sdb-tree-item{margin-top:4px!important}.course-content .sdb-tree-name{font-family:var(--sd-mono);font-size:.86em;font-weight:500;color:var(--c-fg)}.course-content .sdb-tree-root>.sdb-tree-list>.sdb-tree-item>.sdb-tree-fold>.sdb-tree-line>.sdb-tree-name,.course-content .sdb-tree-root>.sdb-tree-list>.sdb-tree-item>.sdb-tree-line>.sdb-tree-name{font-weight:650}.course-content .sdb-tree-name code{padding:0;border:0;background:none;font-size:1em}.course-content .sdb-tree-name strong{font-weight:650}.course-content .sdb-tree-line>.sdb-dash{color:var(--c-fg-4)}.course-content .sdb-tree-note{font-size:.9em;color:var(--c-fg-3)}.course-content .sdb-tree-fold>p,.course-content .sdb-tree-item>p{margin:0 0 4px;font-size:.9em;color:var(--c-fg-3)}.course-content .sdb-tree-fold>summary{cursor:pointer;list-style:none;padding-right:34px}.course-content .sdb-tree-fold>summary::-webkit-details-marker{display:none}.course-content .sdb-tree-fold>summary:after{content:"+";position:absolute;right:0;top:3px;display:grid;place-items:center;width:20px;height:20px;border:1px solid var(--c-line);font-family:var(--sd-mono);font-size:12px;line-height:1;color:var(--c-fg-3)}.course-content .sdb-tree-fold[open]>summary:after{content:"\2212"}.course-content .sdb-tree-fold>summary:hover:after{border-color:var(--c-fg-3);color:var(--c-fg)}.course-content .sdb-tree-fold:not([open])>summary .sdb-tree-name{-webkit-text-decoration:underline dotted var(--c-fg-4);text-decoration:underline dotted var(--c-fg-4);text-underline-offset:3px}@media (pointer:coarse){.course-content .sdb-tree-fold>summary{padding-top:8px;padding-bottom:8px}.course-content .sdb-tree-fold>summary:after{top:8px}}.course-content .sdb-callout{display:grid;grid-template-columns:20px minmax(0,1fr);-moz-column-gap:12px;column-gap:12px;padding:14px 18px 14px 14px;border-left:2px solid var(--sdb-tone);background:linear-gradient(90deg,color-mix(in srgb,var(--sdb-tone) 7%,var(--c-surface)),var(--c-surface) 70%)}.course-content .sdb-callout[data-type=info]{border-left-color:var(--c-fg-3)}.course-content .sdb-callout-icon{display:grid;place-items:center;width:20px;height:22px;color:var(--sdb-tone-text)}.course-content .sdb-callout[data-type=info] .sdb-callout-icon{color:var(--c-fg-2)}.course-content .sdb-callout-main{min-width:0}.course-content .sdb-callout-title{margin:0 0 6px!important;font-weight:650;line-height:1.45;color:var(--c-fg)}.course-content .sdb-callout-kind{display:inline-block;margin-right:10px;font-weight:600;vertical-align:.1em}.course-content .sdb-callout-kind,.course-content .sdb-callout-title-chrome{font-family:var(--sd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--sdb-tone-text)}.course-content .sdb-callout[data-type=info] .sdb-callout-kind,.course-content .sdb-callout[data-type=info] .sdb-callout-title-chrome{color:var(--c-fg-3)}.course-content .sdb-callout ul>li::marker{color:var(--sdb-tone-text)}.course-content .sdb-stats{border:0;background:transparent}.course-content .sdb-stats>.sdb-head{padding:0 0 10px;border-bottom:0}.course-content .sdb-stats>.sdb-head:before{background:var(--c-signal)}.course-content .sdb-stats>p{margin:10px 0;color:var(--c-fg-2)}.course-content .sdb-stats ol.sd-stats,.course-content .sdb-stats ul.sd-stats{margin:0;padding:0}.course-content .sdb-stats .sd-stats>li{font-size:.86em}.course-content .sdb-stats .sd-stats>li>strong:first-child{font-size:clamp(22px,1.6em,32px)}.course-content .sdb-stat-label{display:block;color:var(--c-fg-2)}.course-content .sdb-calc .sdb-body{padding:4px 0 0}.course-content .sdb-calc .sdb-body:after{height:0}.course-content .sdb-calc .sdb-body>:not(.sdb-calc-list):not(.sd-table){margin-left:16px;margin-right:16px}.course-content .sdb-calc .sdb-body>p:first-child{margin-top:10px}.course-content .sdb-calc .sdb-body>:last-child:not(.sdb-calc-list):not(.sd-table){margin-bottom:14px}.course-content .sdb-calc .sdb-body>.sd-table{margin:0;border-width:0}.course-content .sdb-calc-list{margin:0!important;padding:0!important;list-style:none}.course-content .sdb-calc-row{margin:0!important;border-bottom:1px dashed var(--c-line)}.course-content .sdb-calc .sdb-body>.sdb-calc-list:last-child>.sdb-calc-row:last-child{border-bottom:0}.course-content .sdb-calc-line{display:grid;grid-template-columns:minmax(0,1fr) auto;-moz-column-gap:16px;column-gap:16px;row-gap:1px;align-items:baseline;padding:9px 16px}.course-content .sdb-calc-label{grid-column:1;grid-row:1;min-width:0;font-weight:550;color:var(--c-fg)}.course-content .sdb-calc-work{grid-column:1/-1;min-width:0;font-family:var(--sd-mono);font-size:.84em;line-height:1.6;color:var(--c-fg-3);overflow-wrap:anywhere}.course-content .sdb-calc-line:is([data-shape=wr],[data-shape=w])>.sdb-calc-work{grid-column:1;grid-row:1}.course-content .sdb-calc-work.sdb-calc-prose{font-family:var(--sd-sans);font-size:.95em;line-height:1.55;color:var(--c-fg-2);overflow-wrap:break-word}.course-content .sdb-calc-work code,.course-content .sdb-calc-work strong{color:var(--c-fg-2)}.course-content .sdb-calc-work code{padding:0;border:0;background:none;font-size:1em}.course-content .sdb-calc-res{grid-column:2;grid-row:1;justify-self:end;max-width:18em;font-family:var(--sd-mono);font-size:.9em;text-align:right;font-variant-numeric:tabular-nums;color:var(--c-fg-2)}.course-content .sdb-calc-res>strong{font-weight:700;color:var(--c-fg)}.course-content .sdb-calc-tail{grid-column:1/-1;font-size:.9em;line-height:1.55;color:var(--c-fg-3)}.course-content .sdb-calc-note{display:block;font-size:.95em;color:var(--c-fg-2)}.course-content .sdb .sdb-calc-sub{margin:0 0 8px 16px!important;padding-left:16px!important;border-left:1px solid var(--c-line)}.course-content .sdb-calc-sub .sdb-calc-row{border-bottom:0}.course-content .sdb-calc-sub .sdb-calc-line{padding:3px 16px 3px 0;font-size:.94em}.course-content .sdb-calc-sub .sdb-calc-label{font-weight:450;color:var(--c-fg-2)}.course-content .sdb-calc-answer>.sdb-calc-line{border-left:2px solid var(--c-signal);padding-left:14px;background:color-mix(in srgb,var(--c-signal) 7%,transparent)}.course-content .sdb-calc-sub .sdb-calc-answer>.sdb-calc-line{padding-left:10px}.course-content .sdb-calc-answer>.sdb-calc-line>.sdb-calc-res,.course-content .sdb-calc-answer>.sdb-calc-line>.sdb-calc-res>strong{color:var(--c-signal-text)}.course-content .sdb-calc-answer>.sdb-calc-line>.sdb-calc-res>strong{font-family:var(--sd-display);font-size:1.3em;font-weight:800;letter-spacing:-.02em}@container (max-width: 559px){.course-content .sdb-calc-line[data-shape=lw]{display:block}.course-content .sdb-calc-line[data-shape=lw]>.sdb-calc-work{margin-left:.3em}.course-content .sdb-calc-line:not([data-shape=lw]){display:flex;flex-wrap:wrap;align-items:baseline}.course-content .sdb-calc-line>.sdb-calc-label{flex:1 1 auto}.course-content .sdb-calc-line>.sdb-calc-work{flex:0 1 auto}.course-content .sdb-calc-line>.sdb-calc-res{margin-left:auto;max-width:100%}.course-content .sdb-calc-line>.sdb-calc-tail{flex:1 1 100%}.course-content .sdb-calc-answer>.sdb-calc-line>.sdb-calc-res{flex:1 1 100%;margin-left:0;text-align:left}}@container (min-width: 560px){.course-content .sdb-calc-line:is([data-shape=lwr],[data-shape=lw]){grid-template-columns:fit-content(15em) minmax(0,1fr) auto}.course-content .sdb-calc-line:is([data-shape=lwr],[data-shape=lw])>.sdb-calc-work{grid-column:2;grid-row:1}.course-content .sdb-calc-line[data-shape=lwr]>.sdb-calc-res{grid-column:3}.course-content .sdb-calc-line[data-shape=lw]>.sdb-calc-work,.course-content .sdb-calc-line[data-shape=lwr]>.sdb-calc-tail{grid-column:2/-1}}.course-content .sdb-calc[data-variant=table] tr:last-child td{border-top:1px solid var(--c-line-strong);font-weight:650;color:var(--c-fg)}.course-content .sdb-tl-list{margin:0 0 .9em!important;padding:0!important;list-style:none}.course-content .sdb-tl-item{position:relative;margin:0!important;padding:0 0 14px 22px}.course-content .sdb-tl-item:before{content:"";position:absolute;left:4px;top:0;bottom:0;width:1px;background:var(--c-line-strong)}.course-content .sdb-tl-item:first-child:before{top:.7em}.course-content .sdb-tl-item:last-child:before{bottom:auto;height:.7em}.course-content .sdb-tl-item:only-child:before{display:none}.course-content .sdb-tl-item:after{content:"";position:absolute;left:0;top:calc(.7em - 4px);width:9px;height:9px;border:1px solid var(--c-fg-3);background:var(--c-surface)}.course-content .sdb-tl-item:last-child:after{border-color:var(--c-signal);background:var(--c-signal)}.course-content .sdb-tl-item:last-child{padding-bottom:2px}.course-content .sdb-tl-time{display:inline-block;margin-bottom:3px;padding:0 7px;border:1px solid var(--c-line);background:var(--c-surface-2);font-family:var(--sd-mono);font-size:.8em;line-height:1.75;font-variant-numeric:tabular-nums;color:var(--c-fg)}.course-content .sdb-tl-time:empty{display:none}.course-content .sdb-tl-time strong{font-weight:600}.course-content .sdb-tl-event{color:var(--c-fg-2)}.course-content .sdb-tl-event>p{margin:0 0 .4em}.course-content .sdb-tl-event>ol,.course-content .sdb-tl-event>ul{margin:.2em 0 .3em;font-size:.95em}@container (min-width: 520px){.course-content .sdb-tl-list{display:grid;grid-template-columns:fit-content(16em) minmax(0,1fr)}.course-content .sdb-tl-item{grid-column:1/-1;display:grid;grid-template-columns:subgrid;-moz-column-gap:0;column-gap:0;padding:0}.course-content .sdb-tl-time{grid-column:1;justify-self:end;align-self:start;margin:0 16px 12px 0;text-align:right;text-wrap:balance}.course-content .sdb-tl-time:empty{display:block;visibility:hidden}.course-content .sdb-tl-event{grid-column:2;position:relative;padding:0 0 16px 24px}.course-content .sdb-tl-item:last-child .sdb-tl-event{padding-bottom:2px}.course-content .sdb-tl-item:after,.course-content .sdb-tl-item:before{display:none}.course-content .sdb-tl-event:before{content:"";position:absolute;left:4px;top:0;bottom:0;width:1px;background:var(--c-line-strong)}.course-content .sdb-tl-item:first-child .sdb-tl-event:before{top:.75em}.course-content .sdb-tl-item:last-child .sdb-tl-event:before{bottom:auto;height:.75em}.course-content .sdb-tl-item:only-child .sdb-tl-event:before{display:none}.course-content .sdb-tl-event:after{content:"";position:absolute;left:0;top:calc(.75em - 4px);width:9px;height:9px;border:1px solid var(--c-fg-3);background:var(--c-surface)}.course-content .sdb-tl-item:last-child .sdb-tl-event:after{border-color:var(--c-signal);background:var(--c-signal)}}.course-content .sdb[data-fallback]{border-top:2px solid var(--c-line-strong)}.course-content .sd-table{background:var(--c-surface)}.course-content .sd-table tbody tr:nth-child(2n) td{background:color-mix(in srgb,var(--c-surface-2) 45%,var(--c-surface))}.course-content .sd-table[data-sticky] tbody tr:nth-child(2n) td:first-child{background:var(--c-surface-2)}.course-content .sd-table td code{font-size:.9em}.course-content .sd-table .sd-num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}.course-content .sd-table th.sd-num{text-align:right}.course-content .sd-table td.sd-num{min-width:0}.course-content .sd-table td>p:last-child{margin-bottom:0}@media (max-width:640px){.course-content .sdb{margin:26px 0;font-size:.92em}.course-content .sdb .sdb{font-size:1em}.course-content .sdb-head{padding:10px 14px 9px}.course-content .sdb-body{padding:14px 14px 2px}.course-content .sdb-col-head{padding:12px 14px 0}.course-content .sdb-col-body{padding:8px 14px 14px}.course-content .sdb-compare-foot,.course-content .sdb-compare-intro{padding:10px 14px}.course-content .sdb-calc-line{padding:9px 14px}.course-content .sdb-calc-answer>.sdb-calc-line{padding-left:12px}.course-content .sdb-calc .sdb-body>:not(.sdb-calc-list):not(.sd-table){margin-left:14px;margin-right:14px}.course-content .sdb-step{padding-left:40px}.course-content .sdb-callout{padding:12px 14px 12px 12px;-moz-column-gap:10px;column-gap:10px}.course-content .sd-table table,.course-content .sdb .sd-table table{font-size:.84em}}.course-content .sdb-compare:not([data-cols="2"]) .sdb-vs{display:none!important}.course-content .sdb-stats ol.sd-stats,.course-content .sdb-stats ul.sd-stats{display:flex;flex-wrap:wrap}.course-content .sdb-stats .sd-stats>li{flex:1 1 170px;min-width:0}.course-content .sdb-stats .sd-stats>li>strong:first-child{color:var(--c-fg)}.course-content .sdb-stats .sd-stats>li:first-child>strong:first-child{color:var(--c-signal-text)}.course-content .sdb-stats>:not(.sdb-head):not(.sd-stats){margin:14px 0 0;font-size:.97em;color:var(--c-fg-2)}.course-content .sdb-stats>.sd-stats+:not(.sdb-head),.course-content .sdb-stats>:not(.sdb-head):not(.sd-stats)+.sd-stats{margin-top:14px}.course-content .sdb-tree[data-names=prose] .sdb-tree-name{font-family:var(--sd-sans);font-size:.97em;font-weight:450}@container (max-width: 539px){.course-content .sdb-compare:not([data-cols="2"])>.sdb-cols>.sdb-col+.sdb-col{margin-top:10px}.course-content .sdb-compare:not([data-cols="2"])>.sdb-cols>.sdb-col+.sdb-col:before{display:none}}@container (max-width: 639px){.course-content .sdb-compare[data-cols="3"]>.sdb-cols>.sdb-col+.sdb-col{margin-top:10px}.course-content .sdb-compare[data-cols="3"]>.sdb-cols>.sdb-col+.sdb-col:before{display:none}}.course-content .sdb-calc .sdb-h{margin-top:16px;padding-top:0;border-top:0;color:var(--c-fg-3)}.reader_prose__fTUyt{--reader-p:19px;font-size:var(--reader-p);line-height:1.75;color:var(--c-fg-2);overflow-wrap:break-word}@media (max-width:639px){.reader_prose__fTUyt{--reader-p:17px;line-height:1.7}}.reader_prose__fTUyt>div>:first-child{margin-top:0}.reader_prose__fTUyt h1,.reader_prose__fTUyt h2,.reader_prose__fTUyt h3,.reader_prose__fTUyt h4,.reader_prose__fTUyt h5,.reader_prose__fTUyt h6{color:var(--c-fg);font-family:var(--font-display),ui-sans-serif,system-ui,sans-serif;scroll-margin-top:calc(var(--reader-top, 120px) + 16px);text-wrap:balance}.reader_prose__fTUyt h1{margin:2.5rem 0 1rem;font-size:clamp(32px,4vw,44px);font-weight:800;line-height:1;letter-spacing:-.035em}.reader_prose__fTUyt h2{margin:3rem 0 1rem;font-size:clamp(26px,3vw,34px);font-weight:700;line-height:1.1;letter-spacing:-.025em}.reader_prose__fTUyt h3{margin:2rem 0 .75rem;font-size:clamp(21px,2.2vw,24px);font-weight:700;line-height:1.2;letter-spacing:-.015em}.reader_prose__fTUyt h4,.reader_prose__fTUyt h5,.reader_prose__fTUyt h6{margin:1.5rem 0 .5rem;font-size:19px;font-weight:700}.reader_prose__fTUyt p{margin:1.1rem 0}.reader_prose__fTUyt strong{color:var(--c-fg);font-weight:600}.reader_prose__fTUyt em{color:var(--c-fg)}.reader_prose__fTUyt a{color:var(--c-signal-text);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}.reader_prose__fTUyt a:hover{text-decoration-thickness:2px}.reader_prose__fTUyt ol,.reader_prose__fTUyt ul{margin:1.1rem 0;padding-left:1.4em}.reader_prose__fTUyt ul{list-style:square}.reader_prose__fTUyt ol{list-style:decimal}.reader_prose__fTUyt li{margin:.4rem 0;padding-left:.2em}.reader_prose__fTUyt li::marker{color:var(--c-signal-text);font-family:var(--font-geist-mono),ui-monospace,monospace;font-size:.85em}.reader_prose__fTUyt li>ol,.reader_prose__fTUyt li>ul{margin:.4rem 0}.reader_prose__fTUyt blockquote{margin:1.5rem 0;padding:16px 20px;border:1px solid var(--c-line);border-left:2px solid var(--c-signal);background:var(--c-surface);color:var(--c-fg)}.reader_prose__fTUyt blockquote>:first-child{margin-top:0}.reader_prose__fTUyt blockquote>:last-child{margin-bottom:0}.reader_prose__fTUyt code{font-family:var(--font-geist-mono),ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.84em;padding:.1em .35em;background:var(--c-surface-2);border:1px solid var(--c-line);color:var(--c-fg)}.reader_prose__fTUyt pre{margin:1.5rem 0;padding:20px;overflow-x:auto;background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-fg-2);font-family:var(--font-geist-mono),ui-monospace,"Cascadia Code",Menlo,monospace;font-size:14px;line-height:1.6;white-space:pre;-moz-tab-size:4;-o-tab-size:4;tab-size:4;font-variant-ligatures:none;scrollbar-width:thin;scrollbar-color:var(--c-line-strong) transparent}.reader_prose__fTUyt pre code{display:block;padding:0;border:0;background:transparent;font-size:inherit;color:inherit;white-space:pre;min-width:-moz-max-content;min-width:max-content}@media (max-width:639px){.reader_prose__fTUyt pre{padding:14px;font-size:12.5px;margin-left:-16px;margin-right:-16px;border-left:0;border-right:0}}.reader_prose__fTUyt table{display:block;width:100%;max-width:100%;overflow-x:auto;margin:1.5rem 0;border-collapse:collapse;font-size:15px;line-height:1.5}.reader_prose__fTUyt td,.reader_prose__fTUyt th{padding:10px 14px;border:1px solid var(--c-line);text-align:left;vertical-align:top}.reader_prose__fTUyt thead th{background:var(--c-surface);color:var(--c-fg-3);font-family:var(--font-geist-mono),ui-monospace,monospace;font-size:11px;font-weight:500;letter-spacing:.08em;text-transform:uppercase}.reader_prose__fTUyt hr{margin:2.5rem 0;border:0;border-top:1px solid var(--c-line)}.reader_prose__fTUyt img{display:block;max-width:100%;height:auto;margin:1.5rem auto;border:1px solid var(--c-line)}.reader_prose__fTUyt mark{background:rgba(255,107,43,.28);color:var(--c-fg);box-shadow:inset 0 -2px 0 var(--c-signal)}.reader_prose__fTUyt .reading-highlight{background:rgba(255,107,43,.28)!important;box-shadow:inset 0 -2px 0 var(--c-signal)!important;border-radius:0!important;padding:2px 0!important}.reader_prose__fTUyt [data-case-inline]{margin:2rem 0}.reader_prose__fTUyt [data-case-inline] a{text-decoration:none}.reader_eq__W7raj{animation:reader_eq__W7raj .8s ease-in-out infinite}@keyframes reader_eq__W7raj{0%,to{transform:scaleY(.3)}50%{transform:scaleY(1)}}.reader_dock__Lp7Rw .fixed{right:16px!important;bottom:calc(env(safe-area-inset-bottom, 0px) + 92px)!important}@media (min-width:1024px){.reader_dock__Lp7Rw .fixed{right:24px!important;bottom:24px!important}}.reader_dock__Lp7Rw .rounded,.reader_dock__Lp7Rw .rounded-full,.reader_dock__Lp7Rw .rounded-lg{border-radius:0!important}.reader_dock__Lp7Rw .shadow-2xl,.reader_dock__Lp7Rw .shadow-lg{box-shadow:none!important}.reader_dock__Lp7Rw button{min-width:44px;min-height:44px;display:inline-grid;place-items:center}.reader_dock__Lp7Rw [class*=bg-white]{background:var(--c-surface)!important;border-color:var(--c-line-strong)!important;color:var(--c-fg)!important}.reader_dock__Lp7Rw [class*=bg-blue-500],.reader_dock__Lp7Rw [class*=bg-green-500],.reader_dock__Lp7Rw [class*=bg-yellow-500]{background:var(--c-signal)!important;border-color:var(--c-signal)!important;color:var(--c-on-signal)!important;transform:none!important}.reader_dock__Lp7Rw [class*="bg-blue-500/10"],.reader_dock__Lp7Rw [class*="bg-green-500/10"],.reader_dock__Lp7Rw [class*="bg-purple-500/10"]{background:var(--c-surface-2)!important;border:1px solid var(--c-line-strong)!important;color:var(--c-fg)!important}.reader_dock__Lp7Rw [class*=bg-blue-500] svg,.reader_dock__Lp7Rw [class*=bg-green-500] svg,.reader_dock__Lp7Rw [class*=bg-yellow-500] svg{color:var(--c-on-signal)!important}.reader_dock__Lp7Rw .text-red-500{color:var(--c-bad-text)!important}.reader_dock__Lp7Rw .bg-green-500.animate-pulse,.reader_dock__Lp7Rw .w-1\.5.bg-green-500,.reader_dock__Lp7Rw .w-1\.5.bg-yellow-500{background:var(--c-signal)!important}.reader_dock__Lp7Rw input[type=range]{accent-color:var(--c-signal)!important;border-radius:0!important}.reader_dock__Lp7Rw select{border-radius:0!important}.reader_dock__Lp7Rw h4,.reader_dock__Lp7Rw label{font-family:var(--font-geist-mono),ui-monospace,monospace;color:var(--c-fg-3)!important}.reader_comments__iGRWx .rounded,.reader_comments__iGRWx .rounded-full,.reader_comments__iGRWx .rounded-lg,.reader_comments__iGRWx .rounded-xl{border-radius:0!important}.reader_comments__iGRWx .shadow-lg,.reader_comments__iGRWx .shadow-md{box-shadow:none!important}.reader_comments__iGRWx [class*=bg-gradient-to]{background-image:none!important;background-color:var(--c-surface-2)!important;color:var(--c-fg)!important}.reader_comments__iGRWx [class~=bg-blue-500],.reader_comments__iGRWx [class~=bg-blue-600]{background-color:var(--c-signal)!important;color:var(--c-on-signal)!important}.reader_comments__iGRWx [class*="bg-blue-500/"],.reader_comments__iGRWx [class*="bg-green-500/"]{background-color:transparent!important;border:1px solid var(--c-line-strong)}.reader_comments__iGRWx [class*=text-blue-]{color:var(--c-signal-text)!important}.reader_comments__iGRWx [class*=text-green-]{color:var(--c-ok)!important}.reader_comments__iGRWx [class*=bg-white]{background-color:var(--c-surface)!important}.reader_comments__iGRWx [class*="border-black/10"]{border-color:var(--c-line)!important}.reader_comments__iGRWx .prose{color:var(--c-fg-2)}.reader_comments__iGRWx .prose a{color:var(--c-signal-text)!important}.reader_comments__iGRWx [contenteditable=true],.reader_comments__iGRWx textarea{font-size:16px}.reader_content__sU4VL{--reader-size:17px}.reader_content__sU4VL :is(.md-content,.sd-body){font-size:var(--reader-size)}.reader_content__sU4VL :is(h1,h2,h3,h4,h5,h6,section[data-sd=stage]){scroll-margin-top:var(--reader-scroll-margin,170px)}.reader_content__sU4VL .reading-highlight{background:rgba(255,107,43,.1);outline:1px solid rgba(255,107,43,.55);outline-offset:4px}.reader_content__sU4VL mark.search-highlight{background:rgba(255,107,43,.3);color:inherit;box-shadow:inset 0 -2px 0 var(--c-signal);padding:0 1px}.reader_rail__sa92g{scrollbar-width:thin}.reader_sheet__u_mZk{overscroll-behavior:contain}@keyframes reader_sheetIn__iJ8G_{0%{transform:translateY(24px);opacity:0}to{transform:none;opacity:1}}.reader_sheetIn__iJ8G_{animation:reader_sheetIn__iJ8G_ .18s ease-out}@keyframes reader_ring__Y1D0T{0%,to{box-shadow:0 0 0 0 rgba(255,107,43,.45)}50%{box-shadow:0 0 0 5px rgba(255,107,43,0)}}.reader_ring__Y1D0T{animation:reader_ring__Y1D0T 2.4s ease-in-out infinite}.reader_outlineNum__FntlK{color:transparent;-webkit-text-stroke:1.5px var(--c-line-strong)}@media (prefers-reduced-motion:reduce){.reader_ring__Y1D0T,.reader_sheetIn__iJ8G_{animation:none}}