@font-face{font-family:"Source Serif 4";font-style:normal;font-display:swap;font-weight:400;src:url(/assets/source-serif-4-latin-400-normal-DJ5YJwmz.woff2) format("woff2"),url(/assets/source-serif-4-latin-400-normal-Dn3IlU-Z.woff) format("woff")}@font-face{font-family:"Source Serif 4";font-style:italic;font-display:swap;font-weight:400;src:url(/assets/source-serif-4-latin-400-italic-0j97Jm6B.woff2) format("woff2"),url(/assets/source-serif-4-latin-400-italic-Dv9jnFA_.woff) format("woff")}@font-face{font-family:"Source Serif 4";font-style:normal;font-display:swap;font-weight:600;src:url(/assets/source-serif-4-latin-600-normal-DouSKlru.woff2) format("woff2"),url(/assets/source-serif-4-latin-600-normal-DMD1h6_f.woff) format("woff")}@font-face{font-family:Inter;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/inter-latin-400-normal-C38fXH4l.woff2) format("woff2"),url(/assets/inter-latin-400-normal-CyCys3Eg.woff) format("woff")}@font-face{font-family:Inter;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/inter-latin-500-normal-Cerq10X2.woff2) format("woff2"),url(/assets/inter-latin-500-normal-BL9OpVg8.woff) format("woff")}@font-face{font-family:Inter;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/inter-latin-600-normal-LgqL8muc.woff2) format("woff2"),url(/assets/inter-latin-600-normal-CiBQ2DWP.woff) format("woff")}*,:before,:after{--tw-border-spacing-x: 0;--tw-border-spacing-y: 0;--tw-translate-x: 0;--tw-translate-y: 0;--tw-rotate: 0;--tw-skew-x: 0;--tw-skew-y: 0;--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-color: rgb(59 130 246 / .5);--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }::backdrop{--tw-border-spacing-x: 0;--tw-border-spacing-y: 0;--tw-translate-x: 0;--tw-translate-y: 0;--tw-rotate: 0;--tw-skew-x: 0;--tw-skew-y: 0;--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-color: rgb(59 130 246 / .5);--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }*,:before,:after{box-sizing:border-box;border-width:0;border-style:solid;border-color:#e5e7eb}:before,:after{--tw-content: ""}html,:host{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;-o-tab-size:4;tab-size:4;font-family:ui-sans-serif,system-ui,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol,"Noto Color Emoji";font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent}body{margin:0;line-height:inherit}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:JetBrains Mono,ui-monospace,SFMono-Regular,monospace;font-feature-settings:normal;font-variation-settings:normal;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}button,input,optgroup,select,textarea{font-family:inherit;font-feature-settings:inherit;font-variation-settings:inherit;font-size:100%;font-weight:inherit;line-height:inherit;letter-spacing:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,input:where([type=button]),input:where([type=reset]),input:where([type=submit]){-webkit-appearance:button;background-color:transparent;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dl,dd,h1,h2,h3,h4,h5,h6,hr,figure,p,pre{margin:0}fieldset{margin:0;padding:0}legend{padding:0}ol,ul,menu{list-style:none;margin:0;padding:0}dialog{padding:0}textarea{resize:vertical}input::-moz-placeholder,textarea::-moz-placeholder{opacity:1;color:#9ca3af}input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}button,[role=button]{cursor:pointer}:disabled{cursor:default}img,svg,video,canvas,audio,iframe,embed,object{display:block;vertical-align:middle}img,video{max-width:100%;height:auto}[hidden]:where(:not([hidden=until-found])){display:none}:root{color-scheme:light;--paper: #f7f8f3;--bg: #f7f8f3;--bg-2: #eff2eb;--bg-3: #e8ede4;--fg: #17291d;--fg-2: #49584b;--fg-3: #58685a;--ink: var(--fg);--ink-2: var(--fg-2);--ink-3: var(--fg-3);--hair: #d3ddcf;--accent: #087638;--on-accent: #fff;--seaweed: #38692d;--indigo: #4b4197;--ochre: #895700;--gold: #52672f;--map-bg: #edf2e9;--soft-accent: #e1edda;--nav-h: 56px;--gutter: clamp(16px, 3vw, 48px);--font-ui: Inter, system-ui, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, monospace;--danger: #a03524;--ease-atlas: cubic-bezier(.22, 1, .36, 1);--measure: 660px}:root[data-theme=atlas]{color-scheme:dark;--bg: #0c1410;--bg-2: #142019;--bg-3: #1c2c20;--fg: #eef4e8;--fg-2: #c4d0c1;--fg-3: #9fb09e;--hair: #344936;--accent: #78df85;--on-accent: #102517;--seaweed: #cde5a9;--indigo: #c3bcff;--ochre: #f1ce71;--gold: #c7d99b;--map-bg: #0b100d;--soft-accent: #1f3522;--danger: #ffb4a3}html{scroll-behavior:auto;scroll-padding-top:76px}body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.65 "Source Serif 4",Georgia,serif;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}button,select,summary{-webkit-tap-highlight-color:transparent}button,select{font-family:Inter,system-ui,sans-serif}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button,select,summary{touch-action:manipulation}a{text-underline-offset:3px}:focus-visible{outline:2px solid var(--accent);outline-offset:4px}::-moz-selection{background:var(--accent);color:var(--on-accent)}::selection{background:var(--accent);color:var(--on-accent)}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:400;line-height:1.2}img{max-width:100%}select{max-width:100%;background:var(--bg);color:var(--fg);border:1px solid var(--hair);border-radius:6px;min-height:44px;padding:8px 32px 8px 12px;font-size:14px}option,optgroup{background-color:var(--bg);color:var(--fg)}pre,code{font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Consolas,monospace}kbd{font:12px/1.8 Inter,sans-serif;padding:2px 5px;border:1px solid var(--hair);border-radius:3px;white-space:nowrap}summary{cursor:pointer;list-style:none}summary::-webkit-details-marker{display:none}main{padding-top:var(--nav-h)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}:root[data-motion=reduced] *{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.\!container{width:100%!important}.container{width:100%}@media(min-width:640px){.\!container{max-width:640px!important}.container{max-width:640px}}@media(min-width:768px){.\!container{max-width:768px!important}.container{max-width:768px}}@media(min-width:1024px){.\!container{max-width:1024px!important}.container{max-width:1024px}}@media(min-width:1280px){.\!container{max-width:1280px!important}.container{max-width:1280px}}@media(min-width:1536px){.\!container{max-width:1536px!important}.container{max-width:1536px}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.pointer-events-none{pointer-events:none}.pointer-events-auto{pointer-events:auto}.visible{visibility:visible}.invisible{visibility:hidden}.collapse{visibility:collapse}.static{position:static}.fixed{position:fixed}.absolute{position:absolute}.relative{position:relative}.inset-0{inset:0}.bottom-6{bottom:1.5rem}.left-1\/2{left:50%}.right-0{right:0}.top-0{top:0}.z-\[120\]{z-index:120}.z-toast{z-index:80}.mb-3{margin-bottom:.75rem}.mt-1{margin-top:.25rem}.mt-3{margin-top:.75rem}.mt-4{margin-top:1rem}.mt-6{margin-top:1.5rem}.mt-8{margin-top:2rem}.block{display:block}.inline-block{display:inline-block}.flex{display:flex}.table{display:table}.grid{display:grid}.contents{display:contents}.hidden{display:none}.h-full{height:100%}.min-h-0{min-height:0px}.min-h-11{min-height:2.75rem}.w-full{width:100%}.min-w-0{min-width:0px}.flex-1{flex:1 1 0%}.shrink{flex-shrink:1}.shrink-0{flex-shrink:0}.grow{flex-grow:1}.-translate-x-1\/2{--tw-translate-x: -50%;transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.transform{transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.cursor-pointer{cursor:pointer}.resize{resize:both}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:.5rem}.gap-4{gap:1rem}.gap-6{gap:1.5rem}.gap-x-6{-moz-column-gap:1.5rem;column-gap:1.5rem}.gap-y-2{row-gap:.5rem}.overflow-hidden{overflow:hidden}.overflow-y-auto{overflow-y:auto}.overscroll-contain{overscroll-behavior:contain}.whitespace-nowrap{white-space:nowrap}.break-words{overflow-wrap:break-word}.rounded{border-radius:.25rem}.border{border-width:1px}.border-t{border-top-width:1px}.px-3{padding-left:.75rem;padding-right:.75rem}.px-6{padding-left:1.5rem;padding-right:1.5rem}.py-4{padding-top:1rem;padding-bottom:1rem}.py-6{padding-top:1.5rem;padding-bottom:1.5rem}.pt-6{padding-top:1.5rem}.font-body{font-family:"Source Serif 4",Georgia,Cambria,serif}.font-ui{font-family:Inter,system-ui,-apple-system,sans-serif}.text-body-sm{font-size:1.0625rem;line-height:1.62}.text-caption{font-size:.8125rem;line-height:1.5}.text-label{font-size:.6875rem;line-height:1.4;letter-spacing:.14em}.uppercase{text-transform:uppercase}.italic{font-style:italic}.tracking-\[0\.14em\]{letter-spacing:.14em}.underline{text-decoration-line:underline}.underline-offset-2{text-underline-offset:2px}.outline{outline-style:solid}.ring{--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color);box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow, 0 0 #0000)}.blur{--tw-blur: blur(8px);filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.invert{--tw-invert: invert(100%);filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.filter{filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.transition{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,backdrop-filter;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-all{transition-property:all;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-colors{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-opacity{transition-property:opacity;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-transform{transition-property:transform;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.duration-\[280ms\]{transition-duration:.28s}.duration-micro{transition-duration:.2s}.duration-ui{transition-duration:.38s}.ease-atlas{transition-timing-function:cubic-bezier(.22,1,.36,1)}.skip-link{position:fixed;top:8px;left:16px;z-index:300;transform:translateY(-200%);padding:8px 16px;background:var(--bg);color:var(--fg)}.skip-link:focus{transform:none}.atlas-nav{height:var(--nav-h);position:fixed;inset:0 0 auto;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:0 var(--gutter);background:var(--bg);border-bottom:1px solid var(--hair);font:12px/1.4 Inter,sans-serif}.atlas-wordmark{display:flex;align-items:center;gap:8px;font-weight:500;text-decoration:none;white-space:nowrap}.wordmark-symbol{font:28px/1 Georgia,serif;color:var(--accent)}.pf-anaconda{display:flex;position:absolute;left:50%;transform:translate(-50%);align-items:center;gap:7px;text-decoration:none;font:500 12px/1 Inter,sans-serif}.pf-anaconda img{width:118px;height:auto;flex-shrink:0}:root:not([data-theme=atlas]) .pf-anaconda img{filter:brightness(0)}.atlas-nav-links{display:flex;gap:24px;align-items:center}.atlas-nav-links button,.site-settings summary{min-height:44px;display:flex;align-items:center;gap:7px}.site-settings{position:relative}.site-settings summary>span:first-child{font-size:22px}.settings-panel{position:absolute;top:calc(100% + 5px);right:0;width:242px;padding:20px;background:var(--bg);border:1px solid var(--hair);border-radius:10px;box-shadow:0 12px 40px #0002;display:grid;gap:12px}.settings-panel>button{text-align:left;border-top:1px solid var(--hair)}.site-footer{max-width:1520px;margin:0 auto;padding:28px var(--gutter);border-top:1px solid var(--hair);display:flex;justify-content:space-between;gap:16px;color:var(--fg-3);font:11px/1.6 Inter,sans-serif}.site-footer small{font-size:10px}.kicker,.eyebrow{font:500 10px/1.5 Inter,sans-serif;text-transform:uppercase;letter-spacing:.14em;color:var(--fg-3)}.footnote-ref{color:var(--accent);font:12px/1.5 Inter,sans-serif}.code-well{background:var(--bg-2);border:1px solid var(--hair);border-radius:9px;min-width:0}.cm-editor{min-width:0;max-width:100%}.cm-scroller{overflow-x:auto!important;overscroll-behavior-x:contain}.equation-block{min-width:0;max-width:100%;padding:20px 12px}.equation-scroll{overflow:auto hidden;max-width:100%;font-size:20px;padding-bottom:8px}.equation-scroll .katex-display{width:-moz-max-content;width:max-content;min-width:100%;margin:0}.equation-scroll-hint{font:11px/1.6 Inter,sans-serif;color:var(--fg-3);margin-top:8px}.equation-block dl{overflow-wrap:anywhere}.python-coordinates summary{font:12px/1.5 Inter,sans-serif;padding:12px 0}@media(max-width:760px){.atlas-nav-links{gap:10px}.desktop-sources,.settings-text{display:none!important}.pf-anaconda img{width:104px}.pf-anaconda{font-size:11px;gap:6px}.site-settings summary{justify-content:center;width:44px}.site-footer{flex-direction:column;gap:8px}}@media(max-width:640px){.atlas-wordmark>span:last-child{display:none}}@media(min-width:640px){.sm\:grid-cols-\[auto_1fr\]{grid-template-columns:auto 1fr}}.atlas-document{max-width:1520px;margin:auto;padding:0 var(--gutter)}.atlas-intro{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:34px 0 28px}.atlas-intro h1{font-size:clamp(30px,3.5vw,48px);letter-spacing:-.035em;margin-top:7px}.intro-caption{font-size:17px;color:var(--fg-2);max-width:340px}.workspace-nav{display:flex;align-items:center;gap:18px;border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);padding:10px 0;font:13px/1.4 Inter,sans-serif}.icon-button{min-width:44px;min-height:44px;font:24px/1 Inter,sans-serif;display:inline-flex;align-items:center;justify-content:center;border-radius:5px}.icon-button:hover{background:var(--bg-2)}.workspace-grid{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:clamp(24px,3vw,48px);align-items:start;padding-top:24px}.workspace-grid>*{min-width:0}.map-section{position:relative;top:auto;border:1px solid var(--hair);border-radius:12px;background:var(--map-bg);overflow:visible;scroll-margin-top:76px}.map-heading{display:flex;align-items:center;justify-content:space-between;padding:4px 12px 4px 20px;font:12px/1.4 Inter,sans-serif;border-bottom:1px solid var(--hair)}.map-heading>span{display:flex;align-items:center;gap:8px}.status-dot{width:6px;height:6px;background:var(--accent);border-radius:50%;display:inline-block}.expand-button{font-size:23px}.map-canvas{height:clamp(360px,55svh,610px);position:relative;isolation:isolate;overflow:hidden}.map-engine{position:absolute;inset:0;z-index:1;touch-action:pan-y;outline-offset:-5px}.map-engine.is-globe{cursor:grab}.map-engine.is-globe:active{cursor:grabbing}.map-engine.is-exploring{touch-action:none}.map-preview{position:absolute;inset:0;width:100%;height:100%;-o-object-fit:contain;object-fit:contain;background:var(--map-bg);z-index:2;pointer-events:none;transition:opacity .25s ease}.preview-hidden{opacity:0}.map-loading{position:absolute;bottom:12px;left:50%;transform:translate(-50%);z-index:3;font:11px/1.4 Inter,sans-serif;padding:6px 10px;background:var(--bg);color:var(--fg-2);border-radius:5px;white-space:nowrap}.map-toolbar{position:relative;display:flex;align-items:center;gap:8px;padding:6px 12px;border-top:1px solid var(--hair);font:12px/1.4 Inter,sans-serif}.map-toolbar>button:not(.icon-button),.layers-popover>summary{min-height:44px;display:flex;align-items:center;gap:9px;padding:8px 11px;border-radius:6px}.map-toolbar .selected{background:var(--soft-accent)}.touch-globe-control,.map-toolbar>button.touch-globe-control{display:none}@media(any-pointer:coarse){.touch-globe-control,.map-toolbar>button.touch-globe-control{display:inline-flex}.mouse-globe-hint{display:none}}.map-kind{color:var(--fg-3);font-size:11px}.layers-popover{position:static;margin-left:auto}.layer-options{position:absolute;right:10px;bottom:calc(100% + 12px);width:min(360px,calc(100vw - 60px));padding:18px;display:flex;flex-direction:column;gap:16px;background:var(--bg);border:1px solid var(--hair);border-radius:10px;box-shadow:0 8px 36px #0002;z-index:8;max-height:60svh;overflow:auto;overscroll-behavior:contain}.map-options-heading{position:sticky;top:-18px;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:12px;margin:-18px -18px 0;padding:8px 18px;background:var(--bg);border-bottom:1px solid var(--hair);font-size:15px}.map-options-heading button{min-height:44px;color:var(--accent);font-size:12px}.map-options-heading button span{margin-left:6px;font-size:18px}.distortion-choice{display:grid;gap:8px}.distortion-choice>label{font-size:13px}.layer-options p{font:12px/1.5 Inter,sans-serif;color:var(--fg-3)}.map-option-switches{border-block:1px solid var(--hair)}.map-option-switch{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:48px;font-size:13px;cursor:pointer}.map-option-switch input{-webkit-appearance:none;-moz-appearance:none;appearance:none;flex:0 0 36px;width:36px;height:22px;border:1px solid var(--fg-3);border-radius:12px;background:var(--bg);cursor:pointer}.map-option-switch input:before{content:"";display:block;width:14px;height:14px;margin:3px;border-radius:50%;background:var(--fg-3)}.map-option-switch input:checked{background:var(--accent);border-color:var(--accent)}.map-option-switch input:checked:before{transform:translate(14px);background:var(--on-accent)}.map-option-switch input:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.map-detail-options>summary{display:flex;justify-content:space-between;align-items:center;min-height:44px;padding-block:12px;color:var(--fg-2)}.map-detail-options>summary span{font-size:18px}.map-detail-options[open]>summary span{transform:rotate(45deg)}.map-detail-options select{width:100%;margin-bottom:8px}.layer-legend{padding:10px 20px;border-top:1px solid var(--hair);color:var(--fg-2);font:11px/1.6 Inter,sans-serif}.map-caption{padding:0 20px 15px;color:var(--fg-3);font:11px/1.6 Inter,sans-serif;min-height:33px}.globe-help{padding:0 20px 12px;font:12px/1.6 Inter,sans-serif}.map-recovery{position:absolute;z-index:6;bottom:20px;left:20px;right:20px;background:var(--bg);border:1px solid var(--hair);border-radius:8px;padding:16px;font:13px/1.6 Inter,sans-serif}.map-recovery button{min-height:44px;text-decoration:underline;margin-top:8px;color:var(--accent)}.lesson-reading{padding:12px 0}.lesson-reading>h2{font-size:clamp(26px,2.4vw,36px);letter-spacing:-.02em;margin:14px 0 20px}.lesson-lede{font-size:18px;line-height:1.7;color:var(--fg-2)}.primary-button{background:var(--accent);color:var(--on-accent);padding:13px 20px;min-height:48px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;gap:20px;font:500 13px/1.5 Inter,sans-serif}.primary-button:hover{filter:brightness(.93)}.lesson-reading>.primary-button{margin-top:24px}.lesson-reading blockquote{margin:34px 0 18px;border-left:2px solid var(--accent);padding:3px 0 3px 18px;font-size:21px;line-height:1.5;font-style:italic}.lesson-small{font:12px/1.7 Inter,sans-serif;color:var(--fg-3)}.prediction{margin:24px 0;padding:18px 20px;background:var(--bg-2);border-radius:8px}.prediction p{margin:6px 0;font-size:17px}.text-button{color:var(--accent);font:500 12px/1.6 Inter,sans-serif;min-height:44px;text-align:left}.place-presets{margin:22px 0;display:flex;flex-direction:column;gap:9px}.place-presets label{font:500 12px/1.6 Inter,sans-serif}.place-presets p{font:12px/1.6 Inter,sans-serif;color:var(--fg-3)}.python-entry{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 0;border-top:1px solid var(--hair)}.python-entry strong{display:block;font-size:22px;font-weight:400;margin-top:4px}.python-entry p{font:12px/1.6 Inter,sans-serif;color:var(--fg-3);margin-top:3px}.python-entry .primary-button{white-space:nowrap;padding:12px 16px;gap:12px}.runtime-credit{font:11px/1.6 Inter,sans-serif;color:var(--fg-3);margin-bottom:22px}.runtime-credit a{text-decoration:underline}.lesson-disclosure{border-top:1px solid var(--hair)}.lesson-disclosure>summary{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:17px 0;min-height:56px;font:500 13px/1.6 Inter,sans-serif}.lesson-disclosure>summary>span{font:22px/1 Inter,sans-serif;transition:transform .2s ease}.lesson-disclosure[open]>summary>span{transform:rotate(45deg)}.disclosure-content{padding:4px 0 24px}.disclosure-content p{margin:12px 0;color:var(--fg-2)}.disclosure-content h2{font-size:25px;margin:12px 0 20px}.disclosure-content h3{font-size:20px;margin:22px 0 10px}.disclosure-content a{font:12px/1.7 Inter,sans-serif;color:var(--accent);text-decoration:underline}.pf-constant-note>a{display:block;margin-top:10px}.lesson-actions{display:flex;flex-wrap:wrap;gap:16px;border-top:1px solid var(--hair);padding:16px 0 6px}.lesson-actions button{min-height:44px;font:12px/1.5 Inter,sans-serif;color:var(--accent);text-decoration:underline}.selected-equation{font-size:12px;line-height:1.6;padding:16px;background:var(--bg-2);border-radius:6px;overflow:auto;white-space:pre}.hint{margin:16px 0;font:12px/1.8 Inter,sans-serif;color:var(--fg-2)}.helper-code{overflow:auto;max-height:500px;font:12px/1.7 ui-monospace,monospace;padding:16px;background:var(--bg-2)}.python-section{grid-column:1/-1;scroll-margin-top:76px;padding-top:16px}.python-section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.python-section-heading h2{font-size:30px;margin-top:8px}.python-section>p{margin:18px 0;max-width:800px;color:var(--fg-2)}.python-section .code-well{margin-top:24px}.editor-open .lesson-reading{grid-column:2;grid-row:1}.editor-open .python-section{grid-column:2;grid-row:1;background:var(--bg);position:relative;z-index:1}.editor-open .lesson-reading{display:none}.editor-open .python-section-heading h2{font-size:27px}.editor-open .python-section{padding-top:12px}.python-section>p{font-size:16px}.editor-loading{padding:24px;border:1px solid var(--hair);border-radius:8px}.run-message{font:12px/1.6 Inter,sans-serif}.lesson-next{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:32px 0 0;padding:18px 0;border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);font:12px/1.7 Inter,sans-serif}.lesson-next>span{color:var(--fg-3)}.lesson-next>button{min-height:44px;color:var(--accent);text-align:right;font-weight:500}.lesson-next>.lesson-previous{margin-left:auto;white-space:nowrap}.context-note{display:grid;grid-template-columns:140px 1fr;gap:20px;padding:28px 0 38px;margin-top:22px;color:var(--fg-3)}.context-note p{font:12px/1.8 Inter,sans-serif;max-width:900px}.context-note a{text-decoration:underline}.expanded{grid-template-columns:minmax(0,1fr)}.expanded .map-section{position:relative;top:auto}.expanded .map-canvas{height:70svh;min-height:360px}.expanded .lesson-reading,.expanded .python-section{grid-column:1;grid-row:auto;max-width:850px;width:100%;margin:auto}.mobile-workspace-tabs{display:none}.preset-confirmation{position:fixed;z-index:250;top:50%;left:50%;transform:translate(-50%,-50%);width:min(420px,calc(100vw - 32px));padding:24px;background:var(--bg);border:1px solid var(--hair);border-radius:12px;box-shadow:0 0 0 100vmax #0007}.preset-confirmation button{min-height:44px;font:13px/1.6 Inter,sans-serif;margin:18px 16px 0 0;color:var(--accent)}.diagnostics{margin:24px 0;border:1px solid var(--hair);padding:16px;font:12px/1.6 Inter,sans-serif}.diagnostics pre{overflow:auto;max-height:600px}.diagnostics button{min-height:44px;color:var(--accent)}.mobile-first-action{display:none}@media(max-width:1100px)and (min-width:901px){.workspace-grid{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:24px}.lesson-reading>h2{font-size:28px}.lesson-lede{font-size:16px}.python-entry{align-items:flex-start;flex-direction:column}}@media(max-width:900px){.layer-options{position:fixed;inset:auto 12px calc(12px + env(safe-area-inset-bottom));width:auto;max-height:min(65svh,calc(var(--visible-height, 100dvh) - 84px));z-index:180}.atlas-document{padding:0 12px}.atlas-intro{padding:14px 4px 12px}.atlas-intro .eyebrow,.intro-caption{display:none}.atlas-intro h1{font-size:28px;line-height:1.15;margin:0;letter-spacing:-.03em}.workspace-nav{gap:6px;padding:5px 0;min-height:54px}.workspace-grid{display:flex;flex-direction:column;gap:24px;padding-top:12px}.map-section{position:relative;top:auto;width:100%;border-radius:8px;scroll-margin-top:68px}.map-heading{padding:0 7px 0 14px;font-size:11px}.map-heading .icon-button{min-height:36px;min-width:40px}.map-canvas{height:clamp(270px,41svh,400px)}.map-toolbar{padding:3px 7px;gap:3px}.map-toolbar>button:not(.icon-button),.layers-popover>summary{padding:8px;font-size:11px}.map-caption{padding:0 14px 12px;font-size:10px;min-height:28px}.map-kind{font-size:10px;max-width:160px}.map-loading{font-size:10px;bottom:8px}.lesson-reading{width:100%;padding:0 6px}.lesson-reading>h2{font-size:28px;margin:10px 0 16px}.lesson-lede{font-size:17px;line-height:1.65}.lesson-reading blockquote{font-size:21px;margin-top:26px}.lesson-next{margin-top:24px;gap:16px;padding:12px 4px}.lesson-next>span{max-width:95px;font-size:10px}.lesson-next>button{font-size:12px}.context-note{grid-template-columns:1fr;gap:8px;padding:24px 4px}.mobile-first-action{display:flex;margin:0 12px 12px;width:calc(100% - 24px);min-height:44px}.lesson-reading>.primary-button{display:none}.mobile-workspace-tabs{display:flex;gap:4px;padding:6px 0;position:sticky;top:56px;z-index:12;background:var(--bg)}.mobile-workspace-tabs button{flex:1;padding:9px;min-height:44px;font:12px/1.5 Inter,sans-serif;border:1px solid var(--hair);border-radius:5px}.mobile-workspace-tabs button[aria-pressed=true]{background:var(--fg);color:var(--bg)}.editor-open.pane-code .map-section,.editor-open.pane-map .python-section{display:none}.python-section{width:100%;scroll-margin-top:114px;padding-top:6px}.python-section-heading h2{font-size:25px!important}.python-section-heading .text-button{max-width:80px;text-align:right}.python-section .code-well{margin-top:16px}.expanded .map-section{position:fixed;inset:0;z-index:150;height:100dvh;max-height:var(--visible-height, 100dvh);width:100%;border:0;border-radius:0;display:flex!important;flex-direction:column;padding:env(safe-area-inset-top,0px) 0 env(safe-area-inset-bottom,0px)}.expanded .map-heading{padding:6px 14px}.expanded .map-heading .icon-button{min-height:44px}.expanded .map-canvas{height:auto;min-height:0;flex:1}.expanded .map-toolbar,.expanded .map-caption{flex-shrink:0}.expanded .map-caption{padding-bottom:12px}.expanded .mobile-first-action{display:none}}.map-crop-note{display:block;margin-top:4px;color:var(--fg-3)}.workspace-grid:not(.expanded) .map-canvas{width:100%;height:auto;min-height:0;aspect-ratio:var(--map-aspect, 1)}.workspace-grid:not(.expanded) .flat-map .map-preview{width:calc(100% * 800 / 700 / 1.02);max-width:none;height:auto;inset:50% auto auto 50%;transform:translate(-50%,-50%)}.workspace-grid:not(.expanded) .mercator-map .map-preview{transform:translate(-50%,-42%)}@media(min-width:901px){.can-pin-map:not(.expanded) .map-section{position:sticky;top:80px}}@media(max-width:900px){.workspace-grid:not(.expanded) .map-section{width:calc(100% + 24px);margin-inline:-12px;border-inline:0;border-radius:0}}@media(max-height:500px)and (max-width:1000px){.map-section{position:relative;top:auto}.map-canvas{height:280px}.expanded .map-canvas{min-height:0}.expanded .map-heading{position:absolute;inset:0 0 auto;z-index:5;border:0;pointer-events:none}.expanded .map-heading>span,.expanded .map-heading button{background:var(--map-bg);border-radius:5px;pointer-events:auto}.expanded .map-heading>span{padding:6px}.expanded .map-caption{position:absolute;width:1px;height:1px;min-height:0;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.atlas-intro{padding:12px 0}}.python-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;border-bottom:1px solid var(--hair);flex-wrap:wrap}.python-toolbar>div{display:flex;gap:6px}.python-toolbar button{padding:8px 14px}.python-filename{font:12px var(--font-mono);color:var(--fg-2)}.python-status{padding:9px 16px!important;margin:0!important;font:12px var(--font-ui)!important;border-bottom:1px solid var(--hair);color:var(--fg-2)}.python-editor{padding:0 6px;max-width:100%;overflow:hidden}.python-editor .cm-scroller{max-height:min(65svh,780px);overscroll-behavior-x:contain}.python-error,.python-warning,.python-output{padding:16px;font-size:13px;overflow-wrap:anywhere;white-space:pre-wrap}.python-error{border-left:3px solid var(--danger);color:var(--danger)}.python-error pre{margin-top:8px;white-space:pre-wrap}.python-output{max-height:240px;overflow:auto;border-top:1px solid var(--hair)}.python-coordinates,.python-annotations{padding:10px 16px;border-top:1px solid var(--hair);font:13px var(--font-ui)}.python-coordinates table{width:100%;text-align:left;font:12px var(--font-mono);margin:12px 0}.python-coordinates th,.python-coordinates td{padding:5px}.python-annotations ol{list-style:none;padding:0}.python-annotations button{padding:12px 0;text-align:left;display:grid;gap:8px;border-bottom:1px solid var(--hair)}.annotated-line{background:color-mix(in srgb,var(--accent) 12%,transparent);box-shadow:inset 2px 0 var(--accent)}.stop-button{border:1px solid var(--danger);color:var(--danger)}.globe-help{display:flex;align-items:center;gap:8px;justify-content:center}.globe-help span{font:12px var(--font-ui)}.globe-help button{font-size:20px;min-width:44px}.preset-confirmation{margin:0;color:var(--fg);box-shadow:0 16px 64px #0003}.preset-confirmation::backdrop{background:#0007}.preset-confirmation h2{font-size:25px;margin-bottom:14px}.expanded.editor-open .lesson-reading{display:block}@media(max-width:900px){.map-heading .icon-button{min-height:44px;min-width:44px}.editor-open.pane-code .python-section{scroll-margin-top:116px}}.python-guidance{font-size:16px;margin-top:16px;color:var(--fg-2)}.python-guidance summary{font:12px var(--font-ui);min-height:44px;display:flex;align-items:center;color:var(--accent)}.python-guidance p{padding-bottom:10px}@media(max-width:900px){.python-section-heading .eyebrow{display:none}.editor-open .python-section-heading h2{font-size:25px;margin-top:0}.python-section-heading>button{max-width:95px;text-align:right}.python-section .code-well{margin-top:8px}.python-guidance{margin-top:0}.python-editor .cm-scroller{max-height:min(65svh,max(180px,calc(var(--visible-height, 100svh) - 220px)))}.editor-open.pane-map .lesson-reading{display:block;width:100%}.atlas-document{--mobile-dock-top: calc( var(--nav-h) + var(--workspace-nav-height, 56px) + var(--workspace-tabs-height, 0px) )}.workspace-nav{position:sticky;top:var(--nav-h);z-index:40;background:var(--bg)}.workspace-nav:before,.mobile-workspace-tabs:before{content:"";position:absolute;inset:0 -12px;z-index:-1;background:var(--bg);border-bottom:1px solid var(--hair)}.mobile-workspace-tabs{top:calc(var(--nav-h) + var(--workspace-nav-height, 56px));z-index:35}.workspace-grid,.map-section,.editor-open.pane-code .python-section{scroll-margin-top:calc(var(--mobile-dock-top) + 12px)}.can-pin-map:not(.expanded) .map-section{position:sticky;top:var(--mobile-dock-top);z-index:30;box-shadow:0 8px 12px -12px #0008}.can-pin-map .lesson-reading :is(h2,h3,a,button,summary,select,[tabindex]){scroll-margin-top:calc(var(--mobile-dock-top) + var(--pinned-map-height) + 16px)}}.primary-destinations{display:flex;width:100%;gap:4px}.primary-destinations button{flex:1;padding:16px 8px;min-height:48px;border-bottom:3px solid transparent;color:var(--fg-2);font-size:15px}.primary-destinations button[aria-current]{border-color:var(--accent);background:var(--soft-accent);color:var(--fg)}.primary-destinations button:hover{background:var(--bg-2)}.primary-picker{display:none;width:100%}.primary-picker select{width:100%}.activity-picker{display:flex;gap:16px;align-items:center;padding:18px 0 0;font:13px/1.5 Inter,sans-serif}.activity-picker span{color:var(--fg-3)}.mapmaker-purpose{margin:22px 0 28px;padding-bottom:24px;border-bottom:1px solid var(--hair)}.mapmaker-purpose p{color:var(--fg-2);margin:12px 0}.mapmaker-purpose a{font:12px/1.5 Inter,sans-serif;text-decoration:underline;text-underline-offset:3px}.mapmaker-purpose h3{margin-top:26px;font-size:22px}.circle-guide{margin:28px 0;border-top:1px solid var(--hair);padding-top:24px}.circle-guide h3{font-size:26px;margin:8px 0 14px}.circle-guide p{margin-bottom:18px;color:var(--fg-2)}.circle-guide svg{width:100%;max-width:450px;margin:10px 0}.guide-step,.check-report{background:var(--soft-accent);border-left:2px solid var(--accent);padding:20px;margin:20px 0}.guide-step p{margin-bottom:12px}.challenge-support{margin:24px 0}.challenge-support>p,.worked-solution p{margin:16px 0}.challenge-hint{padding:16px;border-left:2px solid var(--hair)}.worked-solution{margin:24px 0}.challenge-support a{text-decoration:underline;text-underline-offset:3px}.colophon-page{max-width:820px;margin:auto;padding:40px var(--gutter) 64px}.colophon-page>.eyebrow{margin-top:48px}.colophon-page h1{font-size:clamp(38px,6vw,64px);line-height:1.1;margin:16px 0 24px;letter-spacing:-.04em}.colophon-lede{font-size:25px;color:var(--fg-2)}.colophon-page section{margin-top:42px;padding-top:30px;border-top:1px solid var(--hair)}.colophon-page h2{font-size:30px;margin-bottom:20px}.colophon-page p,.colophon-page li{margin:16px 0}.colophon-page a:not(.text-button){text-decoration:underline;text-underline-offset:4px}.colophon-page pre{padding:20px;background:var(--bg-2);font:13px/1.8 monospace;overflow-x:auto}.colophon-page blockquote{border-left:2px solid var(--accent);padding-left:22px;margin:24px 0;font-style:italic;font-size:23px}.notebook-links{display:grid;grid-template-columns:1fr 1fr;gap:8px 20px}.colophon-page .notebook-links li{margin:0}.site-footer>a{font:12px/1.5 Inter,sans-serif;color:var(--accent)}@media(max-width:900px){.primary-destinations{display:none}.primary-picker{display:block}.workspace-nav{padding:6px 0}.primary-picker select{min-height:48px;background:var(--bg)}.activity-picker{flex-wrap:wrap;gap:8px 12px;padding-bottom:6px}.activity-picker label{width:100%;color:var(--fg-3);font-size:11px}.activity-picker select{flex:1;min-width:0}.activity-picker span{display:none}.colophon-page{padding-top:24px}}@media(max-width:400px){.notebook-links{grid-template-columns:1fr}}
