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9px)}.pyg-structure-delivered{color:var(--pv-muted);justify-content:center;align-items:baseline;gap:12px;font-size:16px;display:flex}.pyg-structure-delivered strong{color:var(--pv-ink);font-size:36px;animation:.3s both pyg-structure-value}.pyg-structure-source{border-top:1px solid var(--pv-line);margin-top:22px;padding-top:12px}.pyg-structure-source summary{width:fit-content;min-height:44px;color:var(--pv-muted);cursor:pointer;padding-block:10px;font-size:16px}.pyg-structure-source summary:hover{color:var(--pv-accent)}.pyg .pyg-structure-program{border:1px solid var(--pv-line);background:var(--pv-paper);max-width:100%;color:var(--pv-ink);font:15px/1.7 var(--fs-mono);white-space:pre;border-radius:10px;margin:12px 0 0;padding:16px;overflow-x:auto}.pyg .pyg-structure-program code{font:inherit;color:inherit;background:0 0;padding:0}.pyg .pyg-structure-progress{color:var(--pv-muted);margin-block:14px;font-size:16px}.pyg-structure-actions{flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;display:flex}.pyg-structure-actions button{min-height:44px}.pyg .pyg-structure-primary{background:var(--pv-ink);color:var(--pv-bg);border-color:var(--pv-ink);min-width:170px}.pyg .pyg-structure-primary:hover{background:var(--pv-accent);color:var(--pv-bg)}.pyg .pyg-structure-feedback{color:var(--pv-muted);margin:15px 0;font-size:18px;line-height:1.6}.pyg .pyg-structure-feedback:empty{margin:0}.pyg .pyg-structure-feedback[data-success=true]{color:var(--pv-green)}.pyg-structure-sliders{gap:8px;margin:23px 0;display:grid}.pyg .pyg-structure-sliders label{justify-content:space-between;align-items:center;font-size:17px;display:flex}.pyg-structure-sliders label strong{font:20px var(--fs-mono)}.pyg-structure-sliders input[type=range]{width:100%;min-width:0;height:44px;accent-color:var(--pv-accent);margin:0;padding:0}.pyg-structure-default{justify-self:start;min-height:44px}.pyg-structure-default-note{color:var(--pv-muted);font-size:15px}.pyg-structure-machine{text-align:center;max-width:360px;margin:24px auto}.pyg-structure-function-core{border:1px solid var(--pv-accent);background:var(--pv-soft);border-radius:14px;flex-direction:column;align-items:center;gap:4px;padding:10px;line-height:1.35;display:flex}.pyg-structure-function-core code{color:var(--pv-accent);font-size:21px}.pyg-structure-function-core>span{color:var(--pv-muted);font-size:14px}.pyg-structure-fork{justify-content:center;height:18px;display:flex}.pyg-structure-fork span{border-bottom:1px solid var(--pv-accent);border-left:1px solid var(--pv-accent);border-radius:0 0 0 10px;width:27%}.pyg-structure-fork span:first-child{transform:scaleX(-1)}.pyg-structure-return-pair{gap:24px;margin-top:6px;line-height:1.4;display:flex}.pyg-structure-return-pair>div{border:1px solid var(--pv-line);background:var(--pv-paper);border-radius:10px;flex-direction:column;flex:1;align-items:center;padding:8px;display:flex}.pyg-structure-return-pair span{color:var(--pv-muted);font-size:15px}.pyg-structure-return-pair strong{color:var(--pv-ink);font-size:30px;font-weight:500;animation:.3s both pyg-structure-value}.pyg-structure-source summary:focus-visible,.pyg-structure-program:focus-visible{outline:3px solid var(--pv-accent);outline-offset:4px}@keyframes pyg-structure-value{0%{opacity:.3;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}[data-motion=paused] .pyg-structure-loop *,[data-motion=paused] .pyg-structure-function *{transition:none!important;animation:none!important}@media (prefers-reduced-motion:reduce){.pyg-structure-loop *,.pyg-structure-function *{transition:none!important;animation:none!important}}@media (max-width:420px){.pyg-structure-options{gap:18px}.pyg-structure-actions{gap:8px}.pyg-structure-actions button{font-size:15px}.pyg .pyg-structure-program{padding:12px;font-size:14px}}
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var(--pv-line);background:var(--pv-paper);border-radius:7px;align-content:center;justify-items:center;height:68px;transition:transform .25s,opacity .25s,background .25s;display:grid}.pyg-data-crate>span{color:var(--pv-muted);font-size:12px}.pyg-data-crate>b{font:600 25px var(--fs-mono,monospace)}.pyg-data-cargo-lane[data-kept=true] .pyg-data-crate{background:var(--pv-sage);border-color:var(--pv-green);transform:translateY(4px)}.pyg-data-cargo-lane[data-kept=false] .pyg-data-crate{opacity:.52;transform:translateY(-3px)}.pyg-data-cargo-route{color:var(--pv-green);font-size:21px}.pyg-data-cargo-lane[data-kept=false] .pyg-data-cargo-route{color:var(--pv-muted)}.pyg-data-tray{border:1.5px dashed var(--pv-green);text-align:center;border-radius:0 0 15px 15px;min-height:95px;margin:6px 0 20px;padding:11px 9px}.pyg-data-tray>small{color:var(--pv-muted);font-size:12px}.pyg-data-tray>div{flex-wrap:wrap;justify-content:center;gap:6px;margin-top:10px;display:flex}.pyg-data-tray>div>span{color:var(--pv-green);background:var(--pv-sage);font:13px var(--fs-mono,monospace);border-radius:6px;padding:6px 9px}.pyg-data-tray>div>.pyg-data-empty{color:var(--pv-muted);background:0 0}.pyg-data-range{margin:16px 0;display:block}.pyg-data-range>span{justify-content:space-between;align-items:center;gap:10px;font-size:15px;display:flex}.pyg-data-range b{font:600 23px var(--fs-mono,monospace);color:var(--pv-accent)}.pyg-data-range input{width:100%;min-width:0;height:38px;accent-color:var(--pv-accent);cursor:pointer;margin:0;display:block}.pyg-data-range-ends{color:var(--pv-muted)}.pyg-data-code{background:var(--pv-paper);border:1px solid var(--pv-line);max-width:100%;color:var(--pv-ink);font:13px/1.65 var(--fs-mono,monospace);border-radius:9px;margin:17px 0 8px;padding:13px;display:block;overflow-x:auto}.pyg-data-code code{font:inherit;white-space:pre}.pyg-data-filter>.pyg-data-printed{font:13px/1.6 var(--fs-mono,monospace);color:var(--pv-green)}.pyg-data-actions{flex-wrap:wrap;gap:9px;margin-top:17px;display:flex}.pyg-data-actions button{border:1px solid var(--pv-accent);background:var(--pv-soft);min-height:44px;color:var(--pv-accent);font:550 15px/1.35 var(--fs-sans,sans-serif);cursor:pointer;border-radius:9px;padding:10px 14px}.pyg-data-actions .pyg-data-reset{color:var(--pv-muted);border-color:var(--pv-line);background:0 0;font-weight:400}.pyg-data-filter>.pyg-data-feedback,.pyg-data-plot>.pyg-data-feedback{min-height:49px;color:var(--pv-rust);margin-top:13px;font-size:15px}.pyg-data-feedback[data-success=true]{color:var(--pv-green)!important}.pyg-data-grid-wrap{max-width:300px;margin:18px auto 10px;padding-top:10px;padding-right:8px;position:relative}.pyg-data-grid{grid-template-columns:20px 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var(--fs-mono,monospace);place-self:center}.pyg-data-y-label,.pyg-data-x-label{color:var(--pv-muted);font:13px var(--fs-mono,monospace);position:absolute}.pyg-data-y-label{top:-10px;left:6px}.pyg-data-x-label{bottom:-3px;right:-3px}.pyg-data-plot>.pyg-data-coordinate-note{color:var(--pv-muted);text-align:center;font-size:13px}.pyg-data-filter button:focus-visible,.pyg-data-plot button:focus-visible,.pyg-data-range input:focus-visible,.pyg-data-code:focus-visible{outline:3px solid var(--pv-accent);outline-offset:3px}@media (prefers-reduced-motion:reduce){.pyg-data-filter *,.pyg-data-plot *{transition:none!important}}[data-motion=paused] .pyg-data-filter *,[data-motion=paused] .pyg-data-plot *{transition:none!important}.pyg-data-source{color:var(--pv-muted);margin-top:16px;font-size:15px}.pyg-data-source summary{cursor:pointer;width:fit-content;min-height:40px;padding:8px 0}.pyg-data-source summary:focus-visible{outline:2px solid var(--pv-accent);outline-offset:3px}.pyg-data-source 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.pyg{width:100%;min-width:0;color:var(--pv-ink)}.pyg h3{letter-spacing:-.3px;margin:0;font-size:26px;font-weight:550;line-height:1.35}.pyg p{margin:10px 0 20px;font-size:19px;line-height:1.6}.pyg button{border:1px solid var(--pv-line);background:var(--pv-paper);min-height:44px;color:var(--pv-ink);font:16px/1.4 var(--fs-sans);cursor:pointer;border-radius:9px;padding:10px 16px}.pyg button:hover,.pyg button[aria-pressed=true]{background:var(--pv-soft);border-color:var(--pv-accent)}.pyg button[aria-disabled=true],.pyg button:disabled{opacity:.55;cursor:default}.pyg .pyg-primary{background:var(--pv-ink);color:var(--pv-bg);border-color:var(--pv-ink)}.pyg .pyg-primary:hover{background:var(--pv-accent)}.pyg pre{background:var(--pv-paper);border:1px solid var(--pv-line);font:16px/1.7 var(--fs-mono);color:var(--pv-ink);border-radius:12px;margin:0;padding:18px;overflow:auto}.pyg code{font-family:var(--fs-mono);font-size:inherit;color:inherit;background:0 0;padding:0}.pyg label{gap:10px;font-size:17px;display:grid}.pyg input[type=range]{width:100%;min-height:44px;accent-color:var(--pv-accent);cursor:pointer}.pyg :is(button,input,pre):focus-visible{outline:3px solid var(--pv-accent);outline-offset:4px}.pyg-status{min-height:64px;color:var(--pv-muted);margin:18px 0!important}.pyg-status[data-success=true]{color:var(--pv-green)}.pyg-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.pyf-experiment-switch{background:var(--pv-soft);border-radius:12px;gap:8px;width:fit-content;margin:0 0 24px;padding:5px;display:flex}.pyf-experiment-switch button{min-height:44px;font:17px var(--fs-sans);color:var(--pv-muted);cursor:pointer;background:0 0;border:0;border-radius:9px;padding:10px 18px}.pyf-experiment-switch button[aria-pressed=true]{background:var(--pv-bg);color:var(--pv-ink);box-shadow:0 1px 3px #00000015}@media (max-width:700px){.pyg h3{font-size:24px}.pyg pre{padding:14px;font-size:15px}.pyf-experiment-switch{width:100%}.pyf-experiment-switch button{flex:1;padding-inline:10px;font-size:16px}}.pyf-player .pyg h3{font-size:26px;line-height:1.35}.pyf-player .pyg>p{font-size:19px;line-height:1.6}.pyf-player .pyg pre{font-size:16px;line-height:1.7}.pyf-player .pyg-data-actions button{font-size:17px}@media (max-width:700px){.pyf-player .pyg h3{font-size:24px}.pyf-player .pyg>p{font-size:18px}.pyf-player .pyg pre{font-size:15px}}.pyf-experiment-switch{background:0 0;margin:24px auto 0;padding:0}.pyf-experiment-switch button{color:var(--pv-muted);text-underline-offset:4px;font-size:15px;text-decoration:underline}.pyg details{margin-block:18px}.pyg summary{min-height:44px;color:var(--pv-muted);cursor:pointer;padding:10px 0;font-size:15px}.pyg summary:focus-visible{outline:3px solid var(--pv-accent);outline-offset:4px}.pyg details[open] summary{margin-bottom:8px}
.lesson-art{--la-ground:#e0ecf4;aspect-ratio:2;background:var(--la-ground);isolation:isolate;border-radius:20px;flex:none;line-height:0;display:block;overflow:hidden}.lesson-art[data-tone=sky]{--la-ground:#e0ecf4}.lesson-art[data-tone=sage]{--la-ground:#e2ecdf}.lesson-art[data-tone=butter]{--la-ground:#fbf0da}.lesson-art[data-tone=lavender]{--la-ground:#ede6f7}.lesson-art[data-tone=coral]{--la-ground:#f7e2da}.lesson-art>svg{width:100%;height:100%;display:block;overflow:hidden}.lesson-art--hero{width:min(100%,400px);margin:0 auto 28px}.lesson-art--header{border-radius:14px;width:128px}.lesson-art--reading{width:min(100%,340px);margin:0 auto 28px}.lesson-art--recap{border-radius:14px;width:160px;margin:0 auto 22px}.lesson-art .lesson-art-float{animation:.8s cubic-bezier(.2,.8,.2,1) both lesson-art-settle}.lesson-art .lesson-art-pop{transform-box:fill-box;transform-origin:50%;animation:.65s cubic-bezier(.2,.8,.2,1) 80ms both lesson-art-arrive}@keyframes lesson-art-settle{0%{translate:0 -6px}to{translate:0}}@keyframes lesson-art-arrive{0%{opacity:.3;transform:scale(.92)}to{opacity:1;transform:scale(1)}}:root[data-theme=dark] .lesson-art[data-tone=sky]{--la-ground:#bfcfdc}:root[data-theme=dark] .lesson-art[data-tone=sage]{--la-ground:#c4d2be}:root[data-theme=dark] .lesson-art[data-tone=butter]{--la-ground:#ded0ae}:root[data-theme=dark] .lesson-art[data-tone=lavender]{--la-ground:#cdc0de}:root[data-theme=dark] .lesson-art[data-tone=coral]{--la-ground:#dfc4b9}.pyf-player .pyf-intro{justify-content:space-between;align-items:center;gap:24px;display:flex}.pyf-player .pyf-intro h2{min-width:0}.pyf-player .pyf-illustrated-reading{width:100%;min-width:0}.fd-player .fd-intro .lesson-art{margin-bottom:28px}[data-motion=paused] .lesson-art *,[data-motion=paused] .lesson-art :before{transition:none!important;animation:none!important}@media (max-width:700px){.lesson-art--hero{width:min(100%,320px);margin-bottom:24px}.lesson-art--reading{width:min(100%,280px);margin-bottom:24px}.lesson-art--recap{width:128px;margin-bottom:20px}.lesson-art--header{border-radius:11px;width:88px}.pyf-player .pyf-intro{gap:16px}}@media (max-width:380px){.pyf-player .pyf-intro{flex-direction:column-reverse;align-items:flex-start}}@media (prefers-reduced-motion:reduce){.lesson-art *{transition:none!important;animation:none!important}}
.pyv{width:100%;min-width:0;color:var(--pv-ink)}.pyv-heading{color:var(--pv-muted);justify-content:space-between;align-items:center;gap:16px;margin:0 0 18px;font-size:15px;display:flex}.pyv-frame-count{font:13px var(--fs-mono);white-space:nowrap}.pyv>.pyv-visual{max-width:540px;margin-inline:auto}.pyv-more{justify-content:center;gap:20px;margin:12px 0;display:flex}.pyv-more button{min-height:44px;color:var(--pv-muted);font:15px var(--fs-sans);cursor:pointer;text-underline-offset:4px;background:0 0;border:0;padding:8px 4px;text-decoration:underline}.pyv-code{border:1px solid var(--pv-line);background:var(--pv-paper);border-radius:14px;min-width:0;overflow:hidden}.pyv-code ol{margin:0;padding:18px 0;list-style:none;overflow-x:auto}.pyv-code li{min-width:max-content;font:16px/1.65 var(--fs-mono);border-left:3px solid #0000;gap:14px;padding:7px 16px;transition:background .25s,border-color .25s;display:flex}.pyv-code li>span{color:var(--pv-muted);text-align:right;flex:none;width:14px;padding-top:3px;font-size:12px}.pyv-code code{font:inherit;color:inherit;white-space:pre;background:0 0;padding:0}.pyv-code .is-active{background:var(--pv-soft);border-left-color:var(--pv-accent)}.pyv-output{border-top:1px solid var(--pv-line);min-height:88px;padding:14px 18px;overflow-x:auto}.pyv-output>span:first-child{font:12px var(--fs-mono);text-transform:uppercase;letter-spacing:.07em;color:var(--pv-muted);margin-bottom:10px;display:block}.pyv-output pre{font:16px/1.65 var(--fs-mono);color:var(--pv-green);margin:0}.pyv-output-empty{color:var(--pv-muted);font-size:14px}.pyv-visual{place-items:center;min-width:0;min-height:280px;display:grid}.pyv-visual>*{width:100%;min-width:0;max-width:100%}.pyv-visual svg{max-width:100%}.pyv-caption{color:var(--pv-ink);min-height:64px;margin:22px 0 14px;font-size:20px;line-height:1.6}.pyv-controls{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;display:flex}.pyv-controls button{border:1px solid var(--pv-line);min-height:46px;color:var(--pv-ink);background:var(--pv-paper);font:16px var(--fs-sans);cursor:pointer;border-radius:9px;justify-content:center;align-items:center;gap:12px;padding:10px 18px;display:inline-flex}.pyv-controls .pyv-play{background:var(--pv-ink);color:var(--pv-bg);border-color:var(--pv-ink);min-width:112px;box-shadow:0 3px 0 var(--pv-muted)}.pyv-controls button:hover:not([aria-disabled=true]){border-color:var(--pv-accent)}.pyv-controls button[aria-disabled=true]{color:var(--pv-muted);background:var(--pv-bg);cursor:default;opacity:.55}.pyv :is(button,ol,[role=region]):focus-visible{outline:3px solid var(--pv-accent);outline-offset:4px}.pyf-player[data-motion=paused] .pyv *,.pyf-player[data-motion=paused] .pyv :before,.pyf-player[data-motion=paused] .pyv :after{transition:none!important;animation:none!important}@media (prefers-reduced-motion:reduce){.pyv *,.pyv :before,.pyv :after{transition:none!important;animation:none!important}}@media (max-width:700px){.pyv-visual{grid-row:1;min-height:220px}.pyv-code li{gap:10px;padding-inline:12px;font-size:15px}.pyv-caption{min-height:92px;font-size:19px}.pyv-controls{gap:8px}.pyv-controls button{padding-inline:14px}.pyv-controls .pyv-play{min-width:100px}}